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base/SOURCES/webkit-remove_woff2.patch

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diff -up webkitgtk-2.20.0/Source/cmake/FindWOFF2Dec.cmake.remove_woff2 webkitgtk-2.20.0/Source/cmake/FindWOFF2Dec.cmake
--- webkitgtk-2.20.0/Source/cmake/FindWOFF2Dec.cmake.remove_woff2 2018-02-19 08:45:33.000000000 +0100
+++ webkitgtk-2.20.0/Source/cmake/FindWOFF2Dec.cmake 2018-03-12 14:42:29.115436946 +0100
@@ -1,53 +0,0 @@
-# - Try to find WOFF2Dec.
-# Once done, this will define
-#
-# WOFF2DEC_FOUND - system has WOFF2Dec.
-# WOFF2DEC_INCLUDE_DIRS - the WOFF2Dec include directories
-# WOFF2DEC_LIBRARIES - link these to use WOFF2Dec.
-#
-# Copyright (C) 2017 Igalia S.L.
-#
-# Redistribution and use in source and binary forms, with or without
-# modification, are permitted provided that the following conditions
-# are met:
-# 1. Redistributions of source code must retain the above copyright
-# notice, this list of conditions and the following disclaimer.
-# 2. Redistributions in binary form must reproduce the above copyright
-# notice, this list of conditions and the following disclaimer in the
-# documentation and/or other materials provided with the distribution.
-#
-# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER AND ITS CONTRIBUTORS ``AS
-# IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
-# THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
-# PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR ITS
-# CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
-# EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
-# PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
-# OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
-# WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
-# OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
-# ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-find_package(PkgConfig)
-pkg_check_modules(PC_WOFF2DEC libwoff2dec)
-
-find_path(WOFF2DEC_INCLUDE_DIRS
- NAMES woff2/decode.h
- HINTS ${PC_WOFF2DEC_INCLUDEDIR}
-)
-
-find_library(WOFF2DEC_LIBRARIES
- NAMES woff2dec
- HINTS ${PC_WOFF2DEC_LIBDIR}
-)
-
-include(FindPackageHandleStandardArgs)
-find_package_handle_standard_args(WOFF2Dec
- REQUIRED_VARS WOFF2DEC_INCLUDE_DIRS WOFF2DEC_LIBRARIES
- FOUND_VAR WOFF2DEC_FOUND
- VERSION_VAR PC_WOFF2DEC_VERSION)
-
-mark_as_advanced(
- WOFF2DEC_INCLUDE_DIRS
- WOFF2DEC_LIBRARIES
-)
diff -up webkitgtk-2.20.0/Source/CMakeLists.txt.remove_woff2 webkitgtk-2.20.0/Source/CMakeLists.txt
--- webkitgtk-2.20.0/Source/CMakeLists.txt.remove_woff2 2018-03-12 14:34:12.488957858 +0100
+++ webkitgtk-2.20.0/Source/CMakeLists.txt 2018-03-12 14:36:44.010873857 +0100
@@ -21,6 +21,10 @@ if (ENABLE_API_TESTS)
add_subdirectory(ThirdParty/gtest)
endif ()
+if (USE_WOFF2)
+ add_subdirectory(ThirdParty/woff2)
+endif ()
+
if (USE_XDGMIME)
add_subdirectory(ThirdParty/xdgmime)
endif ()
diff -up webkitgtk-2.20.0/Source/cmake/OptionsGTK.cmake.remove_woff2 webkitgtk-2.20.0/Source/cmake/OptionsGTK.cmake
--- webkitgtk-2.20.0/Source/cmake/OptionsGTK.cmake.remove_woff2 2018-03-12 14:34:12.507957716 +0100
+++ webkitgtk-2.20.0/Source/cmake/OptionsGTK.cmake 2018-03-12 14:37:58.900345035 +0100
@@ -345,10 +345,6 @@ if (USE_WOFF2)
if (NOT BROTLIDEC_FOUND)
message(FATAL_ERROR "librotlidec is needed for USE_WOFF2.")
endif ()
- find_package(WOFF2Dec 1.0.1)
- if (NOT WOFF2DEC_FOUND)
- message(FATAL_ERROR "liwoff2dec is needed for USE_WOFF2.")
- endif ()
endif ()
# https://bugs.webkit.org/show_bug.cgi?id=182247
diff -up webkitgtk-2.20.0/Source/ThirdParty/woff2/CMakeLists.txt.remove_woff2 webkitgtk-2.20.0/Source/ThirdParty/woff2/CMakeLists.txt
--- webkitgtk-2.20.0/Source/ThirdParty/woff2/CMakeLists.txt.remove_woff2 2018-03-12 14:34:12.490957843 +0100
+++ webkitgtk-2.20.0/Source/ThirdParty/woff2/CMakeLists.txt 2018-03-12 14:34:12.490957843 +0100
@@ -0,0 +1,28 @@
+set(WOFF2_DIR "${THIRDPARTY_DIR}/woff2")
+
+set(WOFF2_INCLUDE_DIRECTORIES
+ "${WOFF2_DIR}/include"
+ "${WOFF2_DIR}/src"
+)
+
+set(WOFF2_SOURCES
+ ${WOFF2_DIR}/src/table_tags.cc
+ ${WOFF2_DIR}/src/variable_length.cc
+ ${WOFF2_DIR}/src/woff2_common.cc
+ ${WOFF2_DIR}/src/woff2_dec.cc
+ ${WOFF2_DIR}/src/woff2_out.cc
+)
+
+include_directories("${BROTLIDEC_INCLUDE_DIRS}")
+include_directories("${WOFF2_INCLUDE_DIRECTORIES}")
+add_library(woff2 STATIC ${WOFF2_SOURCES})
+target_link_libraries(woff2 "${BROTLIDEC_LIBRARIES}")
+
+if (COMPILER_IS_GCC_OR_CLANG)
+ WEBKIT_ADD_TARGET_CXX_FLAGS(woff2 -Wno-cast-align
+ -Wno-implicit-fallthrough
+ -Wno-sign-compare
+ -Wno-unused-variable
+ -Wno-unused-parameter
+ -Wno-unused-but-set-variable)
+endif ()
diff -up webkitgtk-2.20.0/Source/ThirdParty/woff2/include/woff2/decode.h.remove_woff2 webkitgtk-2.20.0/Source/ThirdParty/woff2/include/woff2/decode.h
--- webkitgtk-2.20.0/Source/ThirdParty/woff2/include/woff2/decode.h.remove_woff2 2018-03-12 14:34:12.492957828 +0100
+++ webkitgtk-2.20.0/Source/ThirdParty/woff2/include/woff2/decode.h 2018-03-12 14:34:12.492957828 +0100
@@ -0,0 +1,36 @@
+/* Copyright 2014 Google Inc. All Rights Reserved.
+
+ Distributed under MIT license.
+ See file LICENSE for detail or copy at https://opensource.org/licenses/MIT
+*/
+
+/* Library for converting WOFF2 format font files to their TTF versions. */
+
+#ifndef WOFF2_WOFF2_DEC_H_
+#define WOFF2_WOFF2_DEC_H_
+
+#include <stddef.h>
+#include <inttypes.h>
+#include <woff2/output.h>
+
+namespace woff2 {
+
+// Compute the size of the final uncompressed font, or 0 on error.
+size_t ComputeWOFF2FinalSize(const uint8_t *data, size_t length);
+
+// Decompresses the font into the target buffer. The result_length should
+// be the same as determined by ComputeFinalSize(). Returns true on successful
+// decompression.
+// DEPRECATED; please prefer the version that takes a WOFF2Out*
+bool ConvertWOFF2ToTTF(uint8_t *result, size_t result_length,
+ const uint8_t *data, size_t length);
+
+// Decompresses the font into out. Returns true on success.
+// Works even if WOFF2Header totalSfntSize is wrong.
+// Please prefer this API.
+bool ConvertWOFF2ToTTF(const uint8_t *data, size_t length,
+ WOFF2Out* out);
+
+} // namespace woff2
+
+#endif // WOFF2_WOFF2_DEC_H_
diff -up webkitgtk-2.20.0/Source/ThirdParty/woff2/include/woff2/encode.h.remove_woff2 webkitgtk-2.20.0/Source/ThirdParty/woff2/include/woff2/encode.h
--- webkitgtk-2.20.0/Source/ThirdParty/woff2/include/woff2/encode.h.remove_woff2 2018-03-12 14:34:12.492957828 +0100
+++ webkitgtk-2.20.0/Source/ThirdParty/woff2/include/woff2/encode.h 2018-03-12 14:34:12.492957828 +0100
@@ -0,0 +1,43 @@
+/* Copyright 2014 Google Inc. All Rights Reserved.
+
+ Distributed under MIT license.
+ See file LICENSE for detail or copy at https://opensource.org/licenses/MIT
+*/
+
+/* Library for converting WOFF2 format font files to their TTF versions. */
+
+#ifndef WOFF2_WOFF2_ENC_H_
+#define WOFF2_WOFF2_ENC_H_
+
+#include <stddef.h>
+#include <inttypes.h>
+#include <string>
+
+namespace woff2 {
+
+struct WOFF2Params {
+ WOFF2Params() : extended_metadata(""), brotli_quality(11),
+ allow_transforms(true) {}
+
+ std::string extended_metadata;
+ int brotli_quality;
+ bool allow_transforms;
+};
+
+// Returns an upper bound on the size of the compressed file.
+size_t MaxWOFF2CompressedSize(const uint8_t* data, size_t length);
+size_t MaxWOFF2CompressedSize(const uint8_t* data, size_t length,
+ const std::string& extended_metadata);
+
+// Compresses the font into the target buffer. *result_length should be at least
+// the value returned by MaxWOFF2CompressedSize(), upon return, it is set to the
+// actual compressed size. Returns true on successful compression.
+bool ConvertTTFToWOFF2(const uint8_t *data, size_t length,
+ uint8_t *result, size_t *result_length);
+bool ConvertTTFToWOFF2(const uint8_t *data, size_t length,
+ uint8_t *result, size_t *result_length,
+ const WOFF2Params& params);
+
+} // namespace woff2
+
+#endif // WOFF2_WOFF2_ENC_H_
diff -up webkitgtk-2.20.0/Source/ThirdParty/woff2/include/woff2/output.h.remove_woff2 webkitgtk-2.20.0/Source/ThirdParty/woff2/include/woff2/output.h
--- webkitgtk-2.20.0/Source/ThirdParty/woff2/include/woff2/output.h.remove_woff2 2018-03-12 14:34:12.493957821 +0100
+++ webkitgtk-2.20.0/Source/ThirdParty/woff2/include/woff2/output.h 2018-03-12 14:34:12.493957821 +0100
@@ -0,0 +1,86 @@
+/* Copyright 2016 Google Inc. All Rights Reserved.
+
+ Distributed under MIT license.
+ See file LICENSE for detail or copy at https://opensource.org/licenses/MIT
+*/
+
+/* Output buffer for WOFF2 decompression. */
+
+#ifndef WOFF2_WOFF2_OUT_H_
+#define WOFF2_WOFF2_OUT_H_
+
+#include <algorithm>
+#include <cstring>
+#include <memory>
+#include <string>
+
+namespace woff2 {
+
+// Suggested max size for output.
+const size_t kDefaultMaxSize = 30 * 1024 * 1024;
+
+/**
+ * Output interface for the woff2 decoding.
+ *
+ * Writes to arbitrary offsets are supported to facilitate updating offset
+ * table and checksums after tables are ready. Reading the current size is
+ * supported so a 'loca' table can be built up while writing glyphs.
+ *
+ * By default limits size to kDefaultMaxSize.
+ */
+class WOFF2Out {
+ public:
+ virtual ~WOFF2Out(void) {}
+
+ // Append n bytes of data from buf.
+ // Return true if all written, false otherwise.
+ virtual bool Write(const void *buf, size_t n) = 0;
+
+ // Write n bytes of data from buf at offset.
+ // Return true if all written, false otherwise.
+ virtual bool Write(const void *buf, size_t offset, size_t n) = 0;
+
+ virtual size_t Size() = 0;
+};
+
+/**
+ * Expanding memory block for woff2 out. By default limited to kDefaultMaxSize.
+ */
+class WOFF2StringOut : public WOFF2Out {
+ public:
+ // Create a writer that writes its data to buf.
+ // buf->size() will grow to at most max_size
+ // buf may be sized (e.g. using EstimateWOFF2FinalSize) or empty.
+ explicit WOFF2StringOut(std::string* buf);
+
+ bool Write(const void *buf, size_t n) override;
+ bool Write(const void *buf, size_t offset, size_t n) override;
+ size_t Size() override { return offset_; }
+ size_t MaxSize() { return max_size_; }
+ void SetMaxSize(size_t max_size);
+ private:
+ std::string* buf_;
+ size_t max_size_;
+ size_t offset_;
+};
+
+/**
+ * Fixed memory block for woff2 out.
+ */
+class WOFF2MemoryOut : public WOFF2Out {
+ public:
+ // Create a writer that writes its data to buf.
+ WOFF2MemoryOut(uint8_t* buf, size_t buf_size);
+
+ bool Write(const void *buf, size_t n) override;
+ bool Write(const void *buf, size_t offset, size_t n) override;
+ size_t Size() override { return offset_; }
+ private:
+ uint8_t* buf_;
+ size_t buf_size_;
+ size_t offset_;
+};
+
+} // namespace woff2
+
+#endif // WOFF2_WOFF2_OUT_H_
diff -up webkitgtk-2.20.0/Source/ThirdParty/woff2/LICENSE.remove_woff2 webkitgtk-2.20.0/Source/ThirdParty/woff2/LICENSE
--- webkitgtk-2.20.0/Source/ThirdParty/woff2/LICENSE.remove_woff2 2018-03-12 14:34:12.491957836 +0100
+++ webkitgtk-2.20.0/Source/ThirdParty/woff2/LICENSE 2018-03-12 14:34:12.491957836 +0100
@@ -0,0 +1,202 @@
+
+ Apache License
+ Version 2.0, January 2004
+ http://www.apache.org/licenses/
+
+ TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
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+
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diff -up webkitgtk-2.20.0/Source/ThirdParty/woff2/README.webkit.remove_woff2 webkitgtk-2.20.0/Source/ThirdParty/woff2/README.webkit
--- webkitgtk-2.20.0/Source/ThirdParty/woff2/README.webkit.remove_woff2 2018-03-12 14:34:12.491957836 +0100
+++ webkitgtk-2.20.0/Source/ThirdParty/woff2/README.webkit 2018-03-12 14:34:12.491957836 +0100
@@ -0,0 +1,14 @@
+This is the woff2 library from
+https://github.com/google/woff2.
+
+Upstream code can be viewed at
+ https://github.com/google/woff2/tree/master/src
+
+and cloned by
+ git clone https://github.com/google/woff2
+
+The in-tree copy is updated by running
+ sh update.sh
+from within the modules/woff2 directory.
+
+Current version: [commit 22c256bc457777744ba14b7325a6e8e0e7dec91c].
diff -up webkitgtk-2.20.0/Source/ThirdParty/woff2/src/buffer.h.remove_woff2 webkitgtk-2.20.0/Source/ThirdParty/woff2/src/buffer.h
--- webkitgtk-2.20.0/Source/ThirdParty/woff2/src/buffer.h.remove_woff2 2018-03-12 14:34:12.493957821 +0100
+++ webkitgtk-2.20.0/Source/ThirdParty/woff2/src/buffer.h 2018-03-12 14:34:12.493957821 +0100
@@ -0,0 +1,164 @@
+/* Copyright 2013 Google Inc. All Rights Reserved.
+
+ Distributed under MIT license.
+ See file LICENSE for detail or copy at https://opensource.org/licenses/MIT
+*/
+
+/* The parts of ots.h & opentype-sanitiser.h that we need, taken from the
+ https://code.google.com/p/ots/ project. */
+
+#ifndef WOFF2_BUFFER_H_
+#define WOFF2_BUFFER_H_
+
+#if defined(_WIN32)
+#include <stdlib.h>
+typedef signed char int8_t;
+typedef unsigned char uint8_t;
+typedef short int16_t;
+typedef unsigned short uint16_t;
+typedef int int32_t;
+typedef unsigned int uint32_t;
+typedef __int64 int64_t;
+typedef unsigned __int64 uint64_t;
+#define ntohl(x) _byteswap_ulong (x)
+#define ntohs(x) _byteswap_ushort (x)
+#define htonl(x) _byteswap_ulong (x)
+#define htons(x) _byteswap_ushort (x)
+#else
+#include <arpa/inet.h>
+#include <stdint.h>
+#endif
+
+#include <cstdio>
+#include <cstdlib>
+#include <cstring>
+#include <limits>
+
+namespace woff2 {
+
+#if defined(_MSC_VER) || !defined(FONT_COMPRESSION_DEBUG)
+#define FONT_COMPRESSION_FAILURE() false
+#else
+#define FONT_COMPRESSION_FAILURE() \
+ woff2::Failure(__FILE__, __LINE__, __PRETTY_FUNCTION__)
+inline bool Failure(const char *f, int l, const char *fn) {
+ fprintf(stderr, "ERROR at %s:%d (%s)\n", f, l, fn);
+ fflush(stderr);
+ return false;
+}
+#endif
+
+// -----------------------------------------------------------------------------
+// Buffer helper class
+//
+// This class perform some trival buffer operations while checking for
+// out-of-bounds errors. As a family they return false if anything is amiss,
+// updating the current offset otherwise.
+// -----------------------------------------------------------------------------
+class Buffer {
+ public:
+ Buffer(const uint8_t *data, size_t len)
+ : buffer_(data),
+ length_(len),
+ offset_(0) { }
+
+ bool Skip(size_t n_bytes) {
+ return Read(NULL, n_bytes);
+ }
+
+ bool Read(uint8_t *data, size_t n_bytes) {
+ if (n_bytes > 1024 * 1024 * 1024) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ if ((offset_ + n_bytes > length_) ||
+ (offset_ > length_ - n_bytes)) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ if (data) {
+ std::memcpy(data, buffer_ + offset_, n_bytes);
+ }
+ offset_ += n_bytes;
+ return true;
+ }
+
+ inline bool ReadU8(uint8_t *value) {
+ if (offset_ + 1 > length_) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ *value = buffer_[offset_];
+ ++offset_;
+ return true;
+ }
+
+ bool ReadU16(uint16_t *value) {
+ if (offset_ + 2 > length_) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ std::memcpy(value, buffer_ + offset_, sizeof(uint16_t));
+ *value = ntohs(*value);
+ offset_ += 2;
+ return true;
+ }
+
+ bool ReadS16(int16_t *value) {
+ return ReadU16(reinterpret_cast<uint16_t*>(value));
+ }
+
+ bool ReadU24(uint32_t *value) {
+ if (offset_ + 3 > length_) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ *value = static_cast<uint32_t>(buffer_[offset_]) << 16 |
+ static_cast<uint32_t>(buffer_[offset_ + 1]) << 8 |
+ static_cast<uint32_t>(buffer_[offset_ + 2]);
+ offset_ += 3;
+ return true;
+ }
+
+ bool ReadU32(uint32_t *value) {
+ if (offset_ + 4 > length_) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ std::memcpy(value, buffer_ + offset_, sizeof(uint32_t));
+ *value = ntohl(*value);
+ offset_ += 4;
+ return true;
+ }
+
+ bool ReadS32(int32_t *value) {
+ return ReadU32(reinterpret_cast<uint32_t*>(value));
+ }
+
+ bool ReadTag(uint32_t *value) {
+ if (offset_ + 4 > length_) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ std::memcpy(value, buffer_ + offset_, sizeof(uint32_t));
+ offset_ += 4;
+ return true;
+ }
+
+ bool ReadR64(uint64_t *value) {
+ if (offset_ + 8 > length_) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ std::memcpy(value, buffer_ + offset_, sizeof(uint64_t));
+ offset_ += 8;
+ return true;
+ }
+
+ const uint8_t *buffer() const { return buffer_; }
+ size_t offset() const { return offset_; }
+ size_t length() const { return length_; }
+
+ void set_offset(size_t newoffset) { offset_ = newoffset; }
+
+ private:
+ const uint8_t * const buffer_;
+ const size_t length_;
+ size_t offset_;
+};
+
+} // namespace woff2
+
+#endif // WOFF2_BUFFER_H_
diff -up webkitgtk-2.20.0/Source/ThirdParty/woff2/src/convert_woff2ttf_fuzzer.cc.remove_woff2 webkitgtk-2.20.0/Source/ThirdParty/woff2/src/convert_woff2ttf_fuzzer.cc
--- webkitgtk-2.20.0/Source/ThirdParty/woff2/src/convert_woff2ttf_fuzzer.cc.remove_woff2 2018-03-12 14:34:12.494957813 +0100
+++ webkitgtk-2.20.0/Source/ThirdParty/woff2/src/convert_woff2ttf_fuzzer.cc 2018-03-12 14:34:12.494957813 +0100
@@ -0,0 +1,13 @@
+#include <stddef.h>
+#include <stdint.h>
+
+#include <woff2/decode.h>
+
+// Entry point for LibFuzzer.
+extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size) {
+ std::string buf;
+ woff2::WOFF2StringOut out(&buf);
+ out.SetMaxSize(30 * 1024 * 1024);
+ woff2::ConvertWOFF2ToTTF(data, size, &out);
+ return 0;
+}
diff -up webkitgtk-2.20.0/Source/ThirdParty/woff2/src/convert_woff2ttf_fuzzer_new_entry.cc.remove_woff2 webkitgtk-2.20.0/Source/ThirdParty/woff2/src/convert_woff2ttf_fuzzer_new_entry.cc
--- webkitgtk-2.20.0/Source/ThirdParty/woff2/src/convert_woff2ttf_fuzzer_new_entry.cc.remove_woff2 2018-03-12 14:34:12.494957813 +0100
+++ webkitgtk-2.20.0/Source/ThirdParty/woff2/src/convert_woff2ttf_fuzzer_new_entry.cc 2018-03-12 14:34:12.494957813 +0100
@@ -0,0 +1,12 @@
+#include <string>
+#include <woff2/decode.h>
+
+extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t data_size) {
+ // Decode using newer entry pattern.
+ // Same pattern as woff2_decompress.
+ std::string output(std::min(woff2::ComputeWOFF2FinalSize(data, data_size),
+ woff2::kDefaultMaxSize), 0);
+ woff2::WOFF2StringOut out(&output);
+ woff2::ConvertWOFF2ToTTF(data, data_size, &out);
+ return 0;
+}
diff -up webkitgtk-2.20.0/Source/ThirdParty/woff2/src/file.h.remove_woff2 webkitgtk-2.20.0/Source/ThirdParty/woff2/src/file.h
--- webkitgtk-2.20.0/Source/ThirdParty/woff2/src/file.h.remove_woff2 2018-03-12 14:34:12.494957813 +0100
+++ webkitgtk-2.20.0/Source/ThirdParty/woff2/src/file.h 2018-03-12 14:34:12.494957813 +0100
@@ -0,0 +1,34 @@
+/* Copyright 2013 Google Inc. All Rights Reserved.
+
+ Distributed under MIT license.
+ See file LICENSE for detail or copy at https://opensource.org/licenses/MIT
+*/
+
+/* File IO helpers. */
+
+#ifndef WOFF2_FILE_H_
+#define WOFF2_FILE_H_
+
+#include <fstream>
+#include <iterator>
+
+namespace woff2 {
+
+using std::string;
+
+
+inline string GetFileContent(string filename) {
+ std::ifstream ifs(filename.c_str(), std::ios::binary);
+ return string(
+ std::istreambuf_iterator<char>(ifs.rdbuf()),
+ std::istreambuf_iterator<char>());
+}
+
+inline void SetFileContents(string filename, string::iterator start,
+ string::iterator end) {
+ std::ofstream ofs(filename.c_str(), std::ios::binary);
+ std::copy(start, end, std::ostream_iterator<char>(ofs));
+}
+
+} // namespace woff2
+#endif // WOFF2_FILE_H_
diff -up webkitgtk-2.20.0/Source/ThirdParty/woff2/src/font.cc.remove_woff2 webkitgtk-2.20.0/Source/ThirdParty/woff2/src/font.cc
--- webkitgtk-2.20.0/Source/ThirdParty/woff2/src/font.cc.remove_woff2 2018-03-12 14:34:12.495957806 +0100
+++ webkitgtk-2.20.0/Source/ThirdParty/woff2/src/font.cc 2018-03-12 14:34:12.494957813 +0100
@@ -0,0 +1,397 @@
+/* Copyright 2013 Google Inc. All Rights Reserved.
+
+ Distributed under MIT license.
+ See file LICENSE for detail or copy at https://opensource.org/licenses/MIT
+*/
+
+/* Font management utilities */
+
+#include "./font.h"
+
+#include <algorithm>
+
+#include "./buffer.h"
+#include "./port.h"
+#include "./store_bytes.h"
+#include "./table_tags.h"
+#include "./woff2_common.h"
+
+namespace woff2 {
+
+Font::Table* Font::FindTable(uint32_t tag) {
+ std::map<uint32_t, Font::Table>::iterator it = tables.find(tag);
+ return it == tables.end() ? 0 : &it->second;
+}
+
+const Font::Table* Font::FindTable(uint32_t tag) const {
+ std::map<uint32_t, Font::Table>::const_iterator it = tables.find(tag);
+ return it == tables.end() ? 0 : &it->second;
+}
+
+std::vector<uint32_t> Font::OutputOrderedTags() const {
+ std::vector<uint32_t> output_order;
+
+ for (const auto& i : tables) {
+ const Font::Table& table = i.second;
+ // This is a transformed table, we will write it together with the
+ // original version.
+ if (table.tag & 0x80808080) {
+ continue;
+ }
+ output_order.push_back(table.tag);
+ }
+
+ // Alphabetize then put loca immediately after glyf
+ auto glyf_loc = std::find(output_order.begin(), output_order.end(),
+ kGlyfTableTag);
+ auto loca_loc = std::find(output_order.begin(), output_order.end(),
+ kLocaTableTag);
+ if (glyf_loc != output_order.end() && loca_loc != output_order.end()) {
+ output_order.erase(loca_loc);
+ output_order.insert(std::find(output_order.begin(), output_order.end(),
+ kGlyfTableTag) + 1, kLocaTableTag);
+ }
+
+ return output_order;
+}
+
+bool ReadTrueTypeFont(Buffer* file, const uint8_t* data, size_t len,
+ Font* font) {
+ // We don't care about the search_range, entry_selector and range_shift
+ // fields, they will always be computed upon writing the font.
+ if (!file->ReadU16(&font->num_tables) ||
+ !file->Skip(6)) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+
+ std::map<uint32_t, uint32_t> intervals;
+ for (uint16_t i = 0; i < font->num_tables; ++i) {
+ Font::Table table;
+ table.flag_byte = 0;
+ table.reuse_of = NULL;
+ if (!file->ReadU32(&table.tag) ||
+ !file->ReadU32(&table.checksum) ||
+ !file->ReadU32(&table.offset) ||
+ !file->ReadU32(&table.length)) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ if ((table.offset & 3) != 0 ||
+ table.length > len ||
+ len - table.length < table.offset) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ intervals[table.offset] = table.length;
+ table.data = data + table.offset;
+ if (font->tables.find(table.tag) != font->tables.end()) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ font->tables[table.tag] = table;
+ }
+
+ // Check that tables are non-overlapping.
+ uint32_t last_offset = 12UL + 16UL * font->num_tables;
+ for (const auto& i : intervals) {
+ if (i.first < last_offset || i.first + i.second < i.first) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ last_offset = i.first + i.second;
+ }
+
+ // Sanity check key tables
+ const Font::Table* head_table = font->FindTable(kHeadTableTag);
+ if (head_table != NULL && head_table->length < 52) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+
+ return true;
+}
+
+bool ReadCollectionFont(Buffer* file, const uint8_t* data, size_t len,
+ Font* font,
+ std::map<uint32_t, Font::Table*>* all_tables) {
+ if (!file->ReadU32(&font->flavor)) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ if (!ReadTrueTypeFont(file, data, len, font)) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+
+ for (auto& entry : font->tables) {
+ Font::Table& table = entry.second;
+
+ if (all_tables->find(table.offset) == all_tables->end()) {
+ (*all_tables)[table.offset] = font->FindTable(table.tag);
+ } else {
+ table.reuse_of = (*all_tables)[table.offset];
+ }
+
+ }
+ return true;
+}
+
+bool ReadTrueTypeCollection(Buffer* file, const uint8_t* data, size_t len,
+ FontCollection* font_collection) {
+ uint32_t num_fonts;
+
+ if (!file->ReadU32(&font_collection->header_version) ||
+ !file->ReadU32(&num_fonts)) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+
+ std::vector<uint32_t> offsets;
+ for (size_t i = 0; i < num_fonts; i++) {
+ uint32_t offset;
+ if (!file->ReadU32(&offset)) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ offsets.push_back(offset);
+ }
+
+ font_collection->fonts.resize(offsets.size());
+ std::vector<Font>::iterator font_it = font_collection->fonts.begin();
+
+ std::map<uint32_t, Font::Table*> all_tables;
+ for (const auto offset : offsets) {
+ file->set_offset(offset);
+ Font& font = *font_it++;
+ if (!ReadCollectionFont(file, data, len, &font, &all_tables)) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ }
+
+ return true;
+}
+
+bool ReadFont(const uint8_t* data, size_t len, Font* font) {
+ Buffer file(data, len);
+
+ if (!file.ReadU32(&font->flavor)) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+
+ if (font->flavor == kTtcFontFlavor) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ return ReadTrueTypeFont(&file, data, len, font);
+}
+
+bool ReadFontCollection(const uint8_t* data, size_t len,
+ FontCollection* font_collection) {
+ Buffer file(data, len);
+
+ if (!file.ReadU32(&font_collection->flavor)) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+
+ if (font_collection->flavor != kTtcFontFlavor) {
+ font_collection->fonts.resize(1);
+ Font& font = font_collection->fonts[0];
+ font.flavor = font_collection->flavor;
+ return ReadTrueTypeFont(&file, data, len, &font);
+ }
+ return ReadTrueTypeCollection(&file, data, len, font_collection);
+}
+
+size_t FontFileSize(const Font& font) {
+ size_t max_offset = 12ULL + 16ULL * font.num_tables;
+ for (const auto& i : font.tables) {
+ const Font::Table& table = i.second;
+ size_t padding_size = (4 - (table.length & 3)) & 3;
+ size_t end_offset = (padding_size + table.offset) + table.length;
+ max_offset = std::max(max_offset, end_offset);
+ }
+ return max_offset;
+}
+
+size_t FontCollectionFileSize(const FontCollection& font_collection) {
+ size_t max_offset = 0;
+ for (auto& font : font_collection.fonts) {
+ // font file size actually just finds max offset
+ max_offset = std::max(max_offset, FontFileSize(font));
+ }
+ return max_offset;
+}
+
+bool WriteFont(const Font& font, uint8_t* dst, size_t dst_size) {
+ size_t offset = 0;
+ return WriteFont(font, &offset, dst, dst_size);
+}
+
+bool WriteTableRecord(const Font::Table* table, size_t* offset, uint8_t* dst,
+ size_t dst_size) {
+ if (dst_size < *offset + kSfntEntrySize) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ if (table->IsReused()) {
+ table = table->reuse_of;
+ }
+ StoreU32(table->tag, offset, dst);
+ StoreU32(table->checksum, offset, dst);
+ StoreU32(table->offset, offset, dst);
+ StoreU32(table->length, offset, dst);
+ return true;
+}
+
+bool WriteTable(const Font::Table& table, size_t* offset, uint8_t* dst,
+ size_t dst_size) {
+ if (!WriteTableRecord(&table, offset, dst, dst_size)) {
+ return false;
+ }
+
+ // Write the actual table data if it's the first time we've seen it
+ if (!table.IsReused()) {
+ if (table.offset + table.length < table.offset ||
+ dst_size < table.offset + table.length) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ memcpy(dst + table.offset, table.data, table.length);
+ size_t padding_size = (4 - (table.length & 3)) & 3;
+ if (table.offset + table.length + padding_size < padding_size ||
+ dst_size < table.offset + table.length + padding_size) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ memset(dst + table.offset + table.length, 0, padding_size);
+ }
+ return true;
+}
+
+bool WriteFont(const Font& font, size_t* offset, uint8_t* dst,
+ size_t dst_size) {
+ if (dst_size < 12ULL + 16ULL * font.num_tables) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ StoreU32(font.flavor, offset, dst);
+ Store16(font.num_tables, offset, dst);
+ uint16_t max_pow2 = font.num_tables ? Log2Floor(font.num_tables) : 0;
+ uint16_t search_range = max_pow2 ? 1 << (max_pow2 + 4) : 0;
+ uint16_t range_shift = (font.num_tables << 4) - search_range;
+ Store16(search_range, offset, dst);
+ Store16(max_pow2, offset, dst);
+ Store16(range_shift, offset, dst);
+
+ for (const auto& i : font.tables) {
+ if (!WriteTable(i.second, offset, dst, dst_size)) {
+ return false;
+ }
+ }
+
+ return true;
+}
+
+bool WriteFontCollection(const FontCollection& font_collection, uint8_t* dst,
+ size_t dst_size) {
+ size_t offset = 0;
+
+ // It's simpler if this just a simple sfnt
+ if (font_collection.flavor != kTtcFontFlavor) {
+ return WriteFont(font_collection.fonts[0], &offset, dst, dst_size);
+ }
+
+ // Write TTC header
+ StoreU32(kTtcFontFlavor, &offset, dst);
+ StoreU32(font_collection.header_version, &offset, dst);
+ StoreU32(font_collection.fonts.size(), &offset, dst);
+
+ // Offset Table, zeroed for now
+ size_t offset_table = offset; // where to write offsets later
+ for (size_t i = 0; i < font_collection.fonts.size(); i++) {
+ StoreU32(0, &offset, dst);
+ }
+
+ if (font_collection.header_version == 0x00020000) {
+ StoreU32(0, &offset, dst); // ulDsigTag
+ StoreU32(0, &offset, dst); // ulDsigLength
+ StoreU32(0, &offset, dst); // ulDsigOffset
+ }
+
+ // Write fonts and their offsets.
+ for (size_t i = 0; i < font_collection.fonts.size(); i++) {
+ const auto& font = font_collection.fonts[i];
+ StoreU32(offset, &offset_table, dst);
+ if (!WriteFont(font, &offset, dst, dst_size)) {
+ return false;
+ }
+ }
+
+ return true;
+}
+
+int NumGlyphs(const Font& font) {
+ const Font::Table* head_table = font.FindTable(kHeadTableTag);
+ const Font::Table* loca_table = font.FindTable(kLocaTableTag);
+ if (head_table == NULL || loca_table == NULL || head_table->length < 52) {
+ return 0;
+ }
+ int index_fmt = IndexFormat(font);
+ int loca_record_size = (index_fmt == 0 ? 2 : 4);
+ if (loca_table->length < loca_record_size) {
+ return 0;
+ }
+ return (loca_table->length / loca_record_size) - 1;
+}
+
+int IndexFormat(const Font& font) {
+ const Font::Table* head_table = font.FindTable(kHeadTableTag);
+ if (head_table == NULL) {
+ return 0;
+ }
+ return head_table->data[51];
+}
+
+bool Font::Table::IsReused() const {
+ return this->reuse_of != NULL;
+}
+
+bool GetGlyphData(const Font& font, int glyph_index,
+ const uint8_t** glyph_data, size_t* glyph_size) {
+ if (glyph_index < 0) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ const Font::Table* head_table = font.FindTable(kHeadTableTag);
+ const Font::Table* loca_table = font.FindTable(kLocaTableTag);
+ const Font::Table* glyf_table = font.FindTable(kGlyfTableTag);
+ if (head_table == NULL || loca_table == NULL || glyf_table == NULL ||
+ head_table->length < 52) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+
+ int index_fmt = IndexFormat(font);
+
+ Buffer loca_buf(loca_table->data, loca_table->length);
+ if (index_fmt == 0) {
+ uint16_t offset1, offset2;
+ if (!loca_buf.Skip(2 * glyph_index) ||
+ !loca_buf.ReadU16(&offset1) ||
+ !loca_buf.ReadU16(&offset2) ||
+ offset2 < offset1 ||
+ 2 * offset2 > glyf_table->length) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ *glyph_data = glyf_table->data + 2 * offset1;
+ *glyph_size = 2 * (offset2 - offset1);
+ } else {
+ uint32_t offset1, offset2;
+ if (!loca_buf.Skip(4 * glyph_index) ||
+ !loca_buf.ReadU32(&offset1) ||
+ !loca_buf.ReadU32(&offset2) ||
+ offset2 < offset1 ||
+ offset2 > glyf_table->length) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ *glyph_data = glyf_table->data + offset1;
+ *glyph_size = offset2 - offset1;
+ }
+ return true;
+}
+
+bool RemoveDigitalSignature(Font* font) {
+ std::map<uint32_t, Font::Table>::iterator it =
+ font->tables.find(kDsigTableTag);
+ if (it != font->tables.end()) {
+ font->tables.erase(it);
+ font->num_tables = font->tables.size();
+ }
+ return true;
+}
+
+} // namespace woff2
diff -up webkitgtk-2.20.0/Source/ThirdParty/woff2/src/font.h.remove_woff2 webkitgtk-2.20.0/Source/ThirdParty/woff2/src/font.h
--- webkitgtk-2.20.0/Source/ThirdParty/woff2/src/font.h.remove_woff2 2018-03-12 14:34:12.495957806 +0100
+++ webkitgtk-2.20.0/Source/ThirdParty/woff2/src/font.h 2018-03-12 14:34:12.495957806 +0100
@@ -0,0 +1,105 @@
+/* Copyright 2013 Google Inc. All Rights Reserved.
+
+ Distributed under MIT license.
+ See file LICENSE for detail or copy at https://opensource.org/licenses/MIT
+*/
+
+/* Data model for a font file in sfnt format, reading and writing functions and
+ accessors for the glyph data. */
+
+#ifndef WOFF2_FONT_H_
+#define WOFF2_FONT_H_
+
+#include <stddef.h>
+#include <inttypes.h>
+#include <map>
+#include <vector>
+
+namespace woff2 {
+
+// Represents an sfnt font file. Only the table directory is parsed, for the
+// table data we only store a raw pointer, therefore a font object is valid only
+// as long the data from which it was parsed is around.
+struct Font {
+ uint32_t flavor;
+ uint16_t num_tables;
+
+ struct Table {
+ uint32_t tag;
+ uint32_t checksum;
+ uint32_t offset;
+ uint32_t length;
+ const uint8_t* data;
+
+ // Buffer used to mutate the data before writing out.
+ std::vector<uint8_t> buffer;
+
+ // If we've seen this tag/offset before, pointer to the first time we saw it
+ // If this is the first time we've seen this table, NULL
+ // Intended use is to bypass re-processing tables
+ Font::Table* reuse_of;
+
+ uint8_t flag_byte;
+
+ // Is this table reused by a TTC
+ bool IsReused() const;
+ };
+ std::map<uint32_t, Table> tables;
+ std::vector<uint32_t> OutputOrderedTags() const;
+
+ Table* FindTable(uint32_t tag);
+ const Table* FindTable(uint32_t tag) const;
+};
+
+// Accomodates both singular (OTF, TTF) and collection (TTC) fonts
+struct FontCollection {
+ uint32_t flavor;
+ uint32_t header_version;
+ // (offset, first use of table*) pairs
+ std::map<uint32_t, Font::Table*> tables;
+ std::vector<Font> fonts;
+};
+
+// Parses the font from the given data. Returns false on parsing failure or
+// buffer overflow. The font is valid only so long the input data pointer is
+// valid. Does NOT support collections.
+bool ReadFont(const uint8_t* data, size_t len, Font* font);
+
+// Parses the font from the given data. Returns false on parsing failure or
+// buffer overflow. The font is valid only so long the input data pointer is
+// valid. Supports collections.
+bool ReadFontCollection(const uint8_t* data, size_t len, FontCollection* fonts);
+
+// Returns the file size of the font.
+size_t FontFileSize(const Font& font);
+size_t FontCollectionFileSize(const FontCollection& font);
+
+// Writes the font into the specified dst buffer. The dst_size should be the
+// same as returned by FontFileSize(). Returns false upon buffer overflow (which
+// should not happen if dst_size was computed by FontFileSize()).
+bool WriteFont(const Font& font, uint8_t* dst, size_t dst_size);
+// Write the font at a specific offset
+bool WriteFont(const Font& font, size_t* offset, uint8_t* dst, size_t dst_size);
+
+bool WriteFontCollection(const FontCollection& font_collection, uint8_t* dst,
+ size_t dst_size);
+
+// Returns the number of glyphs in the font.
+// NOTE: Currently this works only for TrueType-flavored fonts, will return
+// zero for CFF-flavored fonts.
+int NumGlyphs(const Font& font);
+
+// Returns the index format of the font
+int IndexFormat(const Font& font);
+
+// Sets *glyph_data and *glyph_size to point to the location of the glyph data
+// with the given index. Returns false if the glyph is not found.
+bool GetGlyphData(const Font& font, int glyph_index,
+ const uint8_t** glyph_data, size_t* glyph_size);
+
+// Removes the digital signature (DSIG) table
+bool RemoveDigitalSignature(Font* font);
+
+} // namespace woff2
+
+#endif // WOFF2_FONT_H_
diff -up webkitgtk-2.20.0/Source/ThirdParty/woff2/src/glyph.cc.remove_woff2 webkitgtk-2.20.0/Source/ThirdParty/woff2/src/glyph.cc
--- webkitgtk-2.20.0/Source/ThirdParty/woff2/src/glyph.cc.remove_woff2 2018-03-12 14:34:12.496957798 +0100
+++ webkitgtk-2.20.0/Source/ThirdParty/woff2/src/glyph.cc 2018-03-12 14:34:12.496957798 +0100
@@ -0,0 +1,374 @@
+/* Copyright 2013 Google Inc. All Rights Reserved.
+
+ Distributed under MIT license.
+ See file LICENSE for detail or copy at https://opensource.org/licenses/MIT
+*/
+
+/* Glyph manipulation */
+
+#include "./glyph.h"
+
+#include <stdlib.h>
+#include <limits>
+#include "./buffer.h"
+#include "./store_bytes.h"
+
+namespace woff2 {
+
+static const int32_t kFLAG_ONCURVE = 1;
+static const int32_t kFLAG_XSHORT = 1 << 1;
+static const int32_t kFLAG_YSHORT = 1 << 2;
+static const int32_t kFLAG_REPEAT = 1 << 3;
+static const int32_t kFLAG_XREPEATSIGN = 1 << 4;
+static const int32_t kFLAG_YREPEATSIGN = 1 << 5;
+static const int32_t kFLAG_ARG_1_AND_2_ARE_WORDS = 1 << 0;
+static const int32_t kFLAG_WE_HAVE_A_SCALE = 1 << 3;
+static const int32_t kFLAG_MORE_COMPONENTS = 1 << 5;
+static const int32_t kFLAG_WE_HAVE_AN_X_AND_Y_SCALE = 1 << 6;
+static const int32_t kFLAG_WE_HAVE_A_TWO_BY_TWO = 1 << 7;
+static const int32_t kFLAG_WE_HAVE_INSTRUCTIONS = 1 << 8;
+
+bool ReadCompositeGlyphData(Buffer* buffer, Glyph* glyph) {
+ glyph->have_instructions = false;
+ glyph->composite_data = buffer->buffer() + buffer->offset();
+ size_t start_offset = buffer->offset();
+ uint16_t flags = kFLAG_MORE_COMPONENTS;
+ while (flags & kFLAG_MORE_COMPONENTS) {
+ if (!buffer->ReadU16(&flags)) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ glyph->have_instructions |= (flags & kFLAG_WE_HAVE_INSTRUCTIONS) != 0;
+ size_t arg_size = 2; // glyph index
+ if (flags & kFLAG_ARG_1_AND_2_ARE_WORDS) {
+ arg_size += 4;
+ } else {
+ arg_size += 2;
+ }
+ if (flags & kFLAG_WE_HAVE_A_SCALE) {
+ arg_size += 2;
+ } else if (flags & kFLAG_WE_HAVE_AN_X_AND_Y_SCALE) {
+ arg_size += 4;
+ } else if (flags & kFLAG_WE_HAVE_A_TWO_BY_TWO) {
+ arg_size += 8;
+ }
+ if (!buffer->Skip(arg_size)) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ }
+ if (buffer->offset() - start_offset > std::numeric_limits<uint32_t>::max()) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ glyph->composite_data_size = buffer->offset() - start_offset;
+ return true;
+}
+
+bool ReadGlyph(const uint8_t* data, size_t len, Glyph* glyph) {
+ Buffer buffer(data, len);
+
+ int16_t num_contours;
+ if (!buffer.ReadS16(&num_contours)) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+
+ // Read the bounding box.
+ if (!buffer.ReadS16(&glyph->x_min) ||
+ !buffer.ReadS16(&glyph->y_min) ||
+ !buffer.ReadS16(&glyph->x_max) ||
+ !buffer.ReadS16(&glyph->y_max)) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+
+ if (num_contours == 0) {
+ // Empty glyph.
+ return true;
+ }
+
+ if (num_contours > 0) {
+ // Simple glyph.
+ glyph->contours.resize(num_contours);
+
+ // Read the number of points per contour.
+ uint16_t last_point_index = 0;
+ for (int i = 0; i < num_contours; ++i) {
+ uint16_t point_index;
+ if (!buffer.ReadU16(&point_index)) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ uint16_t num_points = point_index - last_point_index + (i == 0 ? 1 : 0);
+ glyph->contours[i].resize(num_points);
+ last_point_index = point_index;
+ }
+
+ // Read the instructions.
+ if (!buffer.ReadU16(&glyph->instructions_size)) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ glyph->instructions_data = data + buffer.offset();
+ if (!buffer.Skip(glyph->instructions_size)) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+
+ // Read the run-length coded flags.
+ std::vector<std::vector<uint8_t> > flags(num_contours);
+ {
+ uint8_t flag = 0;
+ uint8_t flag_repeat = 0;
+ for (int i = 0; i < num_contours; ++i) {
+ flags[i].resize(glyph->contours[i].size());
+ for (size_t j = 0; j < glyph->contours[i].size(); ++j) {
+ if (flag_repeat == 0) {
+ if (!buffer.ReadU8(&flag)) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ if (flag & kFLAG_REPEAT) {
+ if (!buffer.ReadU8(&flag_repeat)) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ }
+ } else {
+ flag_repeat--;
+ }
+ flags[i][j] = flag;
+ glyph->contours[i][j].on_curve = flag & kFLAG_ONCURVE;
+ }
+ }
+ }
+
+ // Read the x coordinates.
+ int prev_x = 0;
+ for (int i = 0; i < num_contours; ++i) {
+ for (size_t j = 0; j < glyph->contours[i].size(); ++j) {
+ uint8_t flag = flags[i][j];
+ if (flag & kFLAG_XSHORT) {
+ // single byte x-delta coord value
+ uint8_t x_delta;
+ if (!buffer.ReadU8(&x_delta)) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ int sign = (flag & kFLAG_XREPEATSIGN) ? 1 : -1;
+ glyph->contours[i][j].x = prev_x + sign * x_delta;
+ } else {
+ // double byte x-delta coord value
+ int16_t x_delta = 0;
+ if (!(flag & kFLAG_XREPEATSIGN)) {
+ if (!buffer.ReadS16(&x_delta)) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ }
+ glyph->contours[i][j].x = prev_x + x_delta;
+ }
+ prev_x = glyph->contours[i][j].x;
+ }
+ }
+
+ // Read the y coordinates.
+ int prev_y = 0;
+ for (int i = 0; i < num_contours; ++i) {
+ for (size_t j = 0; j < glyph->contours[i].size(); ++j) {
+ uint8_t flag = flags[i][j];
+ if (flag & kFLAG_YSHORT) {
+ // single byte y-delta coord value
+ uint8_t y_delta;
+ if (!buffer.ReadU8(&y_delta)) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ int sign = (flag & kFLAG_YREPEATSIGN) ? 1 : -1;
+ glyph->contours[i][j].y = prev_y + sign * y_delta;
+ } else {
+ // double byte y-delta coord value
+ int16_t y_delta = 0;
+ if (!(flag & kFLAG_YREPEATSIGN)) {
+ if (!buffer.ReadS16(&y_delta)) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ }
+ glyph->contours[i][j].y = prev_y + y_delta;
+ }
+ prev_y = glyph->contours[i][j].y;
+ }
+ }
+ } else if (num_contours == -1) {
+ // Composite glyph.
+ if (!ReadCompositeGlyphData(&buffer, glyph)) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ // Read the instructions.
+ if (glyph->have_instructions) {
+ if (!buffer.ReadU16(&glyph->instructions_size)) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ glyph->instructions_data = data + buffer.offset();
+ if (!buffer.Skip(glyph->instructions_size)) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ } else {
+ glyph->instructions_size = 0;
+ }
+ } else {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ return true;
+}
+
+namespace {
+
+void StoreBbox(const Glyph& glyph, size_t* offset, uint8_t* dst) {
+ Store16(glyph.x_min, offset, dst);
+ Store16(glyph.y_min, offset, dst);
+ Store16(glyph.x_max, offset, dst);
+ Store16(glyph.y_max, offset, dst);
+}
+
+void StoreInstructions(const Glyph& glyph, size_t* offset, uint8_t* dst) {
+ Store16(glyph.instructions_size, offset, dst);
+ StoreBytes(glyph.instructions_data, glyph.instructions_size, offset, dst);
+}
+
+bool StoreEndPtsOfContours(const Glyph& glyph, size_t* offset, uint8_t* dst) {
+ int end_point = -1;
+ for (const auto& contour : glyph.contours) {
+ end_point += contour.size();
+ if (contour.size() > std::numeric_limits<uint16_t>::max() ||
+ end_point > std::numeric_limits<uint16_t>::max()) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ Store16(end_point, offset, dst);
+ }
+ return true;
+}
+
+bool StorePoints(const Glyph& glyph, size_t* offset,
+ uint8_t* dst, size_t dst_size) {
+ int last_flag = -1;
+ int repeat_count = 0;
+ int last_x = 0;
+ int last_y = 0;
+ size_t x_bytes = 0;
+ size_t y_bytes = 0;
+
+ // Store the flags and calculate the total size of the x and y coordinates.
+ for (const auto& contour : glyph.contours) {
+ for (const auto& point : contour) {
+ int flag = point.on_curve ? kFLAG_ONCURVE : 0;
+ int dx = point.x - last_x;
+ int dy = point.y - last_y;
+ if (dx == 0) {
+ flag |= kFLAG_XREPEATSIGN;
+ } else if (dx > -256 && dx < 256) {
+ flag |= kFLAG_XSHORT | (dx > 0 ? kFLAG_XREPEATSIGN : 0);
+ x_bytes += 1;
+ } else {
+ x_bytes += 2;
+ }
+ if (dy == 0) {
+ flag |= kFLAG_YREPEATSIGN;
+ } else if (dy > -256 && dy < 256) {
+ flag |= kFLAG_YSHORT | (dy > 0 ? kFLAG_YREPEATSIGN : 0);
+ y_bytes += 1;
+ } else {
+ y_bytes += 2;
+ }
+ if (flag == last_flag && repeat_count != 255) {
+ dst[*offset - 1] |= kFLAG_REPEAT;
+ repeat_count++;
+ } else {
+ if (repeat_count != 0) {
+ if (*offset >= dst_size) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ dst[(*offset)++] = repeat_count;
+ }
+ if (*offset >= dst_size) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ dst[(*offset)++] = flag;
+ repeat_count = 0;
+ }
+ last_x = point.x;
+ last_y = point.y;
+ last_flag = flag;
+ }
+ }
+ if (repeat_count != 0) {
+ if (*offset >= dst_size) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ dst[(*offset)++] = repeat_count;
+ }
+
+ if (*offset + x_bytes + y_bytes > dst_size) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+
+ // Store the x and y coordinates.
+ size_t x_offset = *offset;
+ size_t y_offset = *offset + x_bytes;
+ last_x = 0;
+ last_y = 0;
+ for (const auto& contour : glyph.contours) {
+ for (const auto& point : contour) {
+ int dx = point.x - last_x;
+ int dy = point.y - last_y;
+ if (dx == 0) {
+ // pass
+ } else if (dx > -256 && dx < 256) {
+ dst[x_offset++] = std::abs(dx);
+ } else {
+ Store16(dx, &x_offset, dst);
+ }
+ if (dy == 0) {
+ // pass
+ } else if (dy > -256 && dy < 256) {
+ dst[y_offset++] = std::abs(dy);
+ } else {
+ Store16(dy, &y_offset, dst);
+ }
+ last_x += dx;
+ last_y += dy;
+ }
+ }
+ *offset = y_offset;
+ return true;
+}
+
+} // namespace
+
+bool StoreGlyph(const Glyph& glyph, uint8_t* dst, size_t* dst_size) {
+ size_t offset = 0;
+ if (glyph.composite_data_size > 0) {
+ // Composite glyph.
+ if (*dst_size < ((10ULL + glyph.composite_data_size) +
+ ((glyph.have_instructions ? 2ULL : 0) +
+ glyph.instructions_size))) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ Store16(-1, &offset, dst);
+ StoreBbox(glyph, &offset, dst);
+ StoreBytes(glyph.composite_data, glyph.composite_data_size, &offset, dst);
+ if (glyph.have_instructions) {
+ StoreInstructions(glyph, &offset, dst);
+ }
+ } else if (glyph.contours.size() > 0) {
+ // Simple glyph.
+ if (glyph.contours.size() > std::numeric_limits<int16_t>::max()) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ if (*dst_size < ((12ULL + 2 * glyph.contours.size()) +
+ glyph.instructions_size)) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ Store16(glyph.contours.size(), &offset, dst);
+ StoreBbox(glyph, &offset, dst);
+ if (!StoreEndPtsOfContours(glyph, &offset, dst)) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ StoreInstructions(glyph, &offset, dst);
+ if (!StorePoints(glyph, &offset, dst, *dst_size)) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ }
+ *dst_size = offset;
+ return true;
+}
+
+} // namespace woff2
diff -up webkitgtk-2.20.0/Source/ThirdParty/woff2/src/glyph.h.remove_woff2 webkitgtk-2.20.0/Source/ThirdParty/woff2/src/glyph.h
--- webkitgtk-2.20.0/Source/ThirdParty/woff2/src/glyph.h.remove_woff2 2018-03-12 14:34:12.496957798 +0100
+++ webkitgtk-2.20.0/Source/ThirdParty/woff2/src/glyph.h 2018-03-12 14:34:12.496957798 +0100
@@ -0,0 +1,63 @@
+/* Copyright 2013 Google Inc. All Rights Reserved.
+
+ Distributed under MIT license.
+ See file LICENSE for detail or copy at https://opensource.org/licenses/MIT
+*/
+
+/* Data model and I/O for glyph data within sfnt format files for the purpose of
+ performing the preprocessing step of the WOFF 2.0 conversion. */
+
+#ifndef WOFF2_GLYPH_H_
+#define WOFF2_GLYPH_H_
+
+#include <stddef.h>
+#include <inttypes.h>
+#include <vector>
+
+namespace woff2 {
+
+// Represents a parsed simple or composite glyph. The composite glyph data and
+// instructions are un-parsed and we keep only pointers to the raw data,
+// therefore the glyph is valid only so long the data from which it was parsed
+// is around.
+class Glyph {
+ public:
+ Glyph() : instructions_size(0), composite_data_size(0) {}
+
+ // Bounding box.
+ int16_t x_min;
+ int16_t x_max;
+ int16_t y_min;
+ int16_t y_max;
+
+ // Instructions.
+ uint16_t instructions_size;
+ const uint8_t* instructions_data;
+
+ // Data model for simple glyphs.
+ struct Point {
+ int x;
+ int y;
+ bool on_curve;
+ };
+ std::vector<std::vector<Point> > contours;
+
+ // Data for composite glyphs.
+ const uint8_t* composite_data;
+ uint32_t composite_data_size;
+ bool have_instructions;
+};
+
+// Parses the glyph from the given data. Returns false on parsing failure or
+// buffer overflow. The glyph is valid only so long the input data pointer is
+// valid.
+bool ReadGlyph(const uint8_t* data, size_t len, Glyph* glyph);
+
+// Stores the glyph into the specified dst buffer. The *dst_size is the buffer
+// size on entry and is set to the actual (unpadded) stored size on exit.
+// Returns false on buffer overflow.
+bool StoreGlyph(const Glyph& glyph, uint8_t* dst, size_t* dst_size);
+
+} // namespace woff2
+
+#endif // WOFF2_GLYPH_H_
diff -up webkitgtk-2.20.0/Source/ThirdParty/woff2/src/normalize.cc.remove_woff2 webkitgtk-2.20.0/Source/ThirdParty/woff2/src/normalize.cc
--- webkitgtk-2.20.0/Source/ThirdParty/woff2/src/normalize.cc.remove_woff2 2018-03-12 14:34:12.496957798 +0100
+++ webkitgtk-2.20.0/Source/ThirdParty/woff2/src/normalize.cc 2018-03-12 14:34:12.496957798 +0100
@@ -0,0 +1,311 @@
+/* Copyright 2013 Google Inc. All Rights Reserved.
+
+ Distributed under MIT license.
+ See file LICENSE for detail or copy at https://opensource.org/licenses/MIT
+*/
+
+/* Glyph normalization */
+
+#include "./normalize.h"
+
+#include <inttypes.h>
+#include <stddef.h>
+
+#include "./buffer.h"
+#include "./port.h"
+#include "./font.h"
+#include "./glyph.h"
+#include "./round.h"
+#include "./store_bytes.h"
+#include "./table_tags.h"
+#include "./woff2_common.h"
+
+namespace woff2 {
+
+namespace {
+
+void StoreLoca(int index_fmt, uint32_t value, size_t* offset, uint8_t* dst) {
+ if (index_fmt == 0) {
+ Store16(value >> 1, offset, dst);
+ } else {
+ StoreU32(value, offset, dst);
+ }
+}
+
+} // namespace
+
+namespace {
+
+bool WriteNormalizedLoca(int index_fmt, int num_glyphs, Font* font) {
+ Font::Table* glyf_table = font->FindTable(kGlyfTableTag);
+ Font::Table* loca_table = font->FindTable(kLocaTableTag);
+
+ int glyph_sz = index_fmt == 0 ? 2 : 4;
+ loca_table->buffer.resize(Round4(num_glyphs + 1) * glyph_sz);
+ loca_table->length = (num_glyphs + 1) * glyph_sz;
+
+ uint8_t* glyf_dst = num_glyphs ? &glyf_table->buffer[0] : NULL;
+ uint8_t* loca_dst = &loca_table->buffer[0];
+ uint32_t glyf_offset = 0;
+ size_t loca_offset = 0;
+
+ for (int i = 0; i < num_glyphs; ++i) {
+ StoreLoca(index_fmt, glyf_offset, &loca_offset, loca_dst);
+ Glyph glyph;
+ const uint8_t* glyph_data;
+ size_t glyph_size;
+ if (!GetGlyphData(*font, i, &glyph_data, &glyph_size) ||
+ (glyph_size > 0 && !ReadGlyph(glyph_data, glyph_size, &glyph))) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ size_t glyf_dst_size = glyf_table->buffer.size() - glyf_offset;
+ if (!StoreGlyph(glyph, glyf_dst + glyf_offset, &glyf_dst_size)) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ glyf_dst_size = Round4(glyf_dst_size);
+ if (glyf_dst_size > std::numeric_limits<uint32_t>::max() ||
+ glyf_offset + static_cast<uint32_t>(glyf_dst_size) < glyf_offset ||
+ (index_fmt == 0 && glyf_offset + glyf_dst_size >= (1UL << 17))) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ glyf_offset += glyf_dst_size;
+ }
+
+ StoreLoca(index_fmt, glyf_offset, &loca_offset, loca_dst);
+
+ glyf_table->buffer.resize(glyf_offset);
+ glyf_table->data = glyf_offset ? &glyf_table->buffer[0] : NULL;
+ glyf_table->length = glyf_offset;
+ loca_table->data = loca_offset ? &loca_table->buffer[0] : NULL;
+
+ return true;
+}
+
+} // namespace
+
+namespace {
+
+bool MakeEditableBuffer(Font* font, int tableTag) {
+ Font::Table* table = font->FindTable(tableTag);
+ if (table == NULL) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ if (table->IsReused()) {
+ return true;
+ }
+ int sz = Round4(table->length);
+ table->buffer.resize(sz);
+ uint8_t* buf = &table->buffer[0];
+ memcpy(buf, table->data, sz);
+ table->data = buf;
+ return true;
+}
+
+} // namespace
+
+bool NormalizeGlyphs(Font* font) {
+ Font::Table* head_table = font->FindTable(kHeadTableTag);
+ Font::Table* glyf_table = font->FindTable(kGlyfTableTag);
+ Font::Table* loca_table = font->FindTable(kLocaTableTag);
+ if (head_table == NULL) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ // If you don't have glyf/loca this transform isn't very interesting
+ if (loca_table == NULL && glyf_table == NULL) {
+ return true;
+ }
+ // It would be best if you didn't have just one of glyf/loca
+ if ((glyf_table == NULL) != (loca_table == NULL)) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ // Must share neither or both loca & glyf
+ if (loca_table->IsReused() != glyf_table->IsReused()) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ if (loca_table->IsReused()) {
+ return true;
+ }
+
+ int index_fmt = head_table->data[51];
+ int num_glyphs = NumGlyphs(*font);
+
+ // We need to allocate a bit more than its original length for the normalized
+ // glyf table, since it can happen that the glyphs in the original table are
+ // 2-byte aligned, while in the normalized table they are 4-byte aligned.
+ // That gives a maximum of 2 bytes increase per glyph. However, there is no
+ // theoretical guarantee that the total size of the flags plus the coordinates
+ // is the smallest possible in the normalized version, so we have to allow
+ // some general overhead.
+ // TODO(user) Figure out some more precise upper bound on the size of
+ // the overhead.
+ size_t max_normalized_glyf_size = 1.1 * glyf_table->length + 2 * num_glyphs;
+
+ glyf_table->buffer.resize(max_normalized_glyf_size);
+
+ // if we can't write a loca using short's (index_fmt 0)
+ // try again using longs (index_fmt 1)
+ if (!WriteNormalizedLoca(index_fmt, num_glyphs, font)) {
+ if (index_fmt != 0) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+
+ // Rewrite loca with 4-byte entries & update head to match
+ index_fmt = 1;
+ if (!WriteNormalizedLoca(index_fmt, num_glyphs, font)) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ head_table->buffer[51] = 1;
+ }
+
+ return true;
+}
+
+bool NormalizeOffsets(Font* font) {
+ uint32_t offset = 12 + 16 * font->num_tables;
+ for (auto tag : font->OutputOrderedTags()) {
+ auto& table = font->tables[tag];
+ table.offset = offset;
+ offset += Round4(table.length);
+ }
+ return true;
+}
+
+namespace {
+
+uint32_t ComputeHeaderChecksum(const Font& font) {
+ uint32_t checksum = font.flavor;
+ uint16_t max_pow2 = font.num_tables ? Log2Floor(font.num_tables) : 0;
+ uint16_t search_range = max_pow2 ? 1 << (max_pow2 + 4) : 0;
+ uint16_t range_shift = (font.num_tables << 4) - search_range;
+ checksum += (font.num_tables << 16 | search_range);
+ checksum += (max_pow2 << 16 | range_shift);
+ for (const auto& i : font.tables) {
+ const Font::Table* table = &i.second;
+ if (table->IsReused()) {
+ table = table->reuse_of;
+ }
+ checksum += table->tag;
+ checksum += table->checksum;
+ checksum += table->offset;
+ checksum += table->length;
+ }
+ return checksum;
+}
+
+} // namespace
+
+bool FixChecksums(Font* font) {
+ Font::Table* head_table = font->FindTable(kHeadTableTag);
+ if (head_table == NULL) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ if (head_table->reuse_of != NULL) {
+ head_table = head_table->reuse_of;
+ }
+ if (head_table->length < 12) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+
+ uint8_t* head_buf = &head_table->buffer[0];
+ size_t offset = 8;
+ StoreU32(0, &offset, head_buf);
+ uint32_t file_checksum = 0;
+ uint32_t head_checksum = 0;
+ for (auto& i : font->tables) {
+ Font::Table* table = &i.second;
+ if (table->IsReused()) {
+ table = table->reuse_of;
+ }
+ table->checksum = ComputeULongSum(table->data, table->length);
+ file_checksum += table->checksum;
+
+ if (table->tag == kHeadTableTag) {
+ head_checksum = table->checksum;
+ }
+ }
+
+ file_checksum += ComputeHeaderChecksum(*font);
+ offset = 8;
+ StoreU32(0xb1b0afba - file_checksum, &offset, head_buf);
+
+ return true;
+}
+
+namespace {
+bool MarkTransformed(Font* font) {
+ Font::Table* head_table = font->FindTable(kHeadTableTag);
+ if (head_table == NULL) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ if (head_table->reuse_of != NULL) {
+ head_table = head_table->reuse_of;
+ }
+ if (head_table->length < 17) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ // set bit 11 of head table 'flags' to indicate that font has undergone
+ // lossless modifying transform
+ int head_flags = head_table->data[16];
+ head_table->buffer[16] = head_flags | 0x08;
+ return true;
+}
+} // namespace
+
+
+bool NormalizeWithoutFixingChecksums(Font* font) {
+ return (MakeEditableBuffer(font, kHeadTableTag) &&
+ RemoveDigitalSignature(font) &&
+ MarkTransformed(font) &&
+ NormalizeGlyphs(font) &&
+ NormalizeOffsets(font));
+}
+
+bool NormalizeFont(Font* font) {
+ return (NormalizeWithoutFixingChecksums(font) &&
+ FixChecksums(font));
+}
+
+bool NormalizeFontCollection(FontCollection* font_collection) {
+ if (font_collection->fonts.size() == 1) {
+ return NormalizeFont(&font_collection->fonts[0]);
+ }
+
+ uint32_t offset = CollectionHeaderSize(font_collection->header_version,
+ font_collection->fonts.size());
+ for (auto& font : font_collection->fonts) {
+ if (!NormalizeWithoutFixingChecksums(&font)) {
+#ifdef FONT_COMPRESSION_BIN
+ fprintf(stderr, "Font normalization failed.\n");
+#endif
+ return FONT_COMPRESSION_FAILURE();
+ }
+ offset += kSfntHeaderSize + kSfntEntrySize * font.num_tables;
+ }
+
+ // Start table offsets after TTC Header and Sfnt Headers
+ for (auto& font : font_collection->fonts) {
+ for (auto tag : font.OutputOrderedTags()) {
+ Font::Table& table = font.tables[tag];
+ if (table.IsReused()) {
+ table.offset = table.reuse_of->offset;
+ } else {
+ table.offset = offset;
+ offset += Round4(table.length);
+ }
+ }
+ }
+
+ // Now we can fix the checksums
+ for (auto& font : font_collection->fonts) {
+ if (!FixChecksums(&font)) {
+#ifdef FONT_COMPRESSION_BIN
+ fprintf(stderr, "Failed to fix checksums\n");
+#endif
+ return FONT_COMPRESSION_FAILURE();
+ }
+ }
+
+ return true;
+}
+
+} // namespace woff2
diff -up webkitgtk-2.20.0/Source/ThirdParty/woff2/src/normalize.h.remove_woff2 webkitgtk-2.20.0/Source/ThirdParty/woff2/src/normalize.h
--- webkitgtk-2.20.0/Source/ThirdParty/woff2/src/normalize.h.remove_woff2 2018-03-12 14:34:12.497957791 +0100
+++ webkitgtk-2.20.0/Source/ThirdParty/woff2/src/normalize.h 2018-03-12 14:34:12.497957791 +0100
@@ -0,0 +1,39 @@
+/* Copyright 2013 Google Inc. All Rights Reserved.
+
+ Distributed under MIT license.
+ See file LICENSE for detail or copy at https://opensource.org/licenses/MIT
+*/
+
+/* Functions for normalizing fonts. Since the WOFF 2.0 decoder creates font
+ files in normalized form, the WOFF 2.0 conversion is guaranteed to be
+ lossless (in a bitwise sense) only for normalized font files. */
+
+#ifndef WOFF2_NORMALIZE_H_
+#define WOFF2_NORMALIZE_H_
+
+namespace woff2 {
+
+struct Font;
+struct FontCollection;
+
+// Changes the offset fields of the table headers so that the data for the
+// tables will be written in order of increasing tag values, without any gaps
+// other than the 4-byte padding.
+bool NormalizeOffsets(Font* font);
+
+// Changes the checksum fields of the table headers and the checksum field of
+// the head table so that it matches the current data.
+bool FixChecksums(Font* font);
+
+// Parses each of the glyphs in the font and writes them again to the glyf
+// table in normalized form, as defined by the StoreGlyph() function. Changes
+// the loca table accordigly.
+bool NormalizeGlyphs(Font* font);
+
+// Performs all of the normalization steps above.
+bool NormalizeFont(Font* font);
+bool NormalizeFontCollection(FontCollection* font_collection);
+
+} // namespace woff2
+
+#endif // WOFF2_NORMALIZE_H_
diff -up webkitgtk-2.20.0/Source/ThirdParty/woff2/src/port.h.remove_woff2 webkitgtk-2.20.0/Source/ThirdParty/woff2/src/port.h
--- webkitgtk-2.20.0/Source/ThirdParty/woff2/src/port.h.remove_woff2 2018-03-12 14:34:12.497957791 +0100
+++ webkitgtk-2.20.0/Source/ThirdParty/woff2/src/port.h 2018-03-12 14:34:12.497957791 +0100
@@ -0,0 +1,66 @@
+/* Copyright 2013 Google Inc. All Rights Reserved.
+
+ Distributed under MIT license.
+ See file LICENSE for detail or copy at https://opensource.org/licenses/MIT
+*/
+
+/* Helper function for bit twiddling and macros for branch prediction. */
+
+#ifndef WOFF2_PORT_H_
+#define WOFF2_PORT_H_
+
+#include <assert.h>
+
+namespace woff2 {
+
+typedef unsigned int uint32;
+
+inline int Log2Floor(uint32 n) {
+#if defined(__GNUC__)
+ return n == 0 ? -1 : 31 ^ __builtin_clz(n);
+#else
+ if (n == 0)
+ return -1;
+ int log = 0;
+ uint32 value = n;
+ for (int i = 4; i >= 0; --i) {
+ int shift = (1 << i);
+ uint32 x = value >> shift;
+ if (x != 0) {
+ value = x;
+ log += shift;
+ }
+ }
+ assert(value == 1);
+ return log;
+#endif
+}
+
+} // namespace woff2
+
+/* Compatibility with non-clang compilers. */
+#ifndef __has_builtin
+#define __has_builtin(x) 0
+#endif
+
+#if (__GNUC__ > 2) || (__GNUC__ == 2 && __GNUC_MINOR__ > 95) || \
+ (defined(__llvm__) && __has_builtin(__builtin_expect))
+#define PREDICT_FALSE(x) (__builtin_expect(x, 0))
+#define PREDICT_TRUE(x) (__builtin_expect(!!(x), 1))
+#else
+#define PREDICT_FALSE(x) (x)
+#define PREDICT_TRUE(x) (x)
+#endif
+
+#if (defined(__ARM_ARCH) && (__ARM_ARCH == 7)) || \
+ (defined(M_ARM) && (M_ARM == 7)) || \
+ defined(__aarch64__) || defined(__ARM64_ARCH_8__) || defined(__i386) || \
+ defined(_M_IX86) || defined(__x86_64__) || defined(_M_X64)
+#if defined(__BYTE_ORDER__) && (__BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__)
+#define WOFF_LITTLE_ENDIAN
+#elif defined(__BYTE_ORDER__) && (__BYTE_ORDER__ == __ORDER_BIG_ENDIAN__)
+#define WOFF_BIG_ENDIAN
+#endif /* endianness */
+#endif /* CPU whitelist */
+
+#endif // WOFF2_PORT_H_
diff -up webkitgtk-2.20.0/Source/ThirdParty/woff2/src/round.h.remove_woff2 webkitgtk-2.20.0/Source/ThirdParty/woff2/src/round.h
--- webkitgtk-2.20.0/Source/ThirdParty/woff2/src/round.h.remove_woff2 2018-03-12 14:34:12.497957791 +0100
+++ webkitgtk-2.20.0/Source/ThirdParty/woff2/src/round.h 2018-03-12 14:34:12.497957791 +0100
@@ -0,0 +1,27 @@
+/* Copyright 2013 Google Inc. All Rights Reserved.
+
+ Distributed under MIT license.
+ See file LICENSE for detail or copy at https://opensource.org/licenses/MIT
+*/
+
+/* Helper for rounding */
+
+#ifndef WOFF2_ROUND_H_
+#define WOFF2_ROUND_H_
+
+#include <limits>
+
+namespace woff2 {
+
+// Round a value up to the nearest multiple of 4. Don't round the value in the
+// case that rounding up overflows.
+template<typename T> T Round4(T value) {
+ if (std::numeric_limits<T>::max() - value < 3) {
+ return value;
+ }
+ return (value + 3) & ~3;
+}
+
+} // namespace woff2
+
+#endif // WOFF2_ROUND_H_
diff -up webkitgtk-2.20.0/Source/ThirdParty/woff2/src/store_bytes.h.remove_woff2 webkitgtk-2.20.0/Source/ThirdParty/woff2/src/store_bytes.h
--- webkitgtk-2.20.0/Source/ThirdParty/woff2/src/store_bytes.h.remove_woff2 2018-03-12 14:34:12.498957783 +0100
+++ webkitgtk-2.20.0/Source/ThirdParty/woff2/src/store_bytes.h 2018-03-12 14:34:12.498957783 +0100
@@ -0,0 +1,71 @@
+/* Copyright 2013 Google Inc. All Rights Reserved.
+
+ Distributed under MIT license.
+ See file LICENSE for detail or copy at https://opensource.org/licenses/MIT
+*/
+
+/* Helper functions for storing integer values into byte streams.
+ No bounds checking is performed, that is the responsibility of the caller. */
+
+#ifndef WOFF2_STORE_BYTES_H_
+#define WOFF2_STORE_BYTES_H_
+
+#include <inttypes.h>
+#include <stddef.h>
+#include <string.h>
+
+#include "./port.h"
+
+namespace woff2 {
+
+inline size_t StoreU32(uint8_t* dst, size_t offset, uint32_t x) {
+ dst[offset] = x >> 24;
+ dst[offset + 1] = x >> 16;
+ dst[offset + 2] = x >> 8;
+ dst[offset + 3] = x;
+ return offset + 4;
+}
+
+inline size_t Store16(uint8_t* dst, size_t offset, int x) {
+#if defined(WOFF_LITTLE_ENDIAN)
+ *reinterpret_cast<uint16_t*>(dst + offset) =
+ ((x & 0xFF) << 8) | ((x & 0xFF00) >> 8);
+#elif defined(WOFF_BIG_ENDIAN)
+ *reinterpret_cast<uint16_t*>(dst + offset) = static_cast<uint16_t>(x);
+#else
+ dst[offset] = x >> 8;
+ dst[offset + 1] = x;
+#endif
+ return offset + 2;
+}
+
+inline void StoreU32(uint32_t val, size_t* offset, uint8_t* dst) {
+ dst[(*offset)++] = val >> 24;
+ dst[(*offset)++] = val >> 16;
+ dst[(*offset)++] = val >> 8;
+ dst[(*offset)++] = val;
+}
+
+inline void Store16(int val, size_t* offset, uint8_t* dst) {
+#if defined(WOFF_LITTLE_ENDIAN)
+ *reinterpret_cast<uint16_t*>(dst + *offset) =
+ ((val & 0xFF) << 8) | ((val & 0xFF00) >> 8);
+ *offset += 2;
+#elif defined(WOFF_BIG_ENDIAN)
+ *reinterpret_cast<uint16_t*>(dst + *offset) = static_cast<uint16_t>(val);
+ *offset += 2;
+#else
+ dst[(*offset)++] = val >> 8;
+ dst[(*offset)++] = val;
+#endif
+}
+
+inline void StoreBytes(const uint8_t* data, size_t len,
+ size_t* offset, uint8_t* dst) {
+ memcpy(&dst[*offset], data, len);
+ *offset += len;
+}
+
+} // namespace woff2
+
+#endif // WOFF2_STORE_BYTES_H_
diff -up webkitgtk-2.20.0/Source/ThirdParty/woff2/src/table_tags.cc.remove_woff2 webkitgtk-2.20.0/Source/ThirdParty/woff2/src/table_tags.cc
--- webkitgtk-2.20.0/Source/ThirdParty/woff2/src/table_tags.cc.remove_woff2 2018-03-12 14:34:12.498957783 +0100
+++ webkitgtk-2.20.0/Source/ThirdParty/woff2/src/table_tags.cc 2018-03-12 14:34:12.498957783 +0100
@@ -0,0 +1,82 @@
+/* Copyright 2014 Google Inc. All Rights Reserved.
+
+ Distributed under MIT license.
+ See file LICENSE for detail or copy at https://opensource.org/licenses/MIT
+*/
+
+/* Font table tags */
+
+#include "./table_tags.h"
+
+namespace woff2 {
+
+// Note that the byte order is big-endian, not the same as ots.cc
+#define TAG(a, b, c, d) ((a << 24) | (b << 16) | (c << 8) | d)
+
+const uint32_t kKnownTags[63] = {
+ TAG('c', 'm', 'a', 'p'), // 0
+ TAG('h', 'e', 'a', 'd'), // 1
+ TAG('h', 'h', 'e', 'a'), // 2
+ TAG('h', 'm', 't', 'x'), // 3
+ TAG('m', 'a', 'x', 'p'), // 4
+ TAG('n', 'a', 'm', 'e'), // 5
+ TAG('O', 'S', '/', '2'), // 6
+ TAG('p', 'o', 's', 't'), // 7
+ TAG('c', 'v', 't', ' '), // 8
+ TAG('f', 'p', 'g', 'm'), // 9
+ TAG('g', 'l', 'y', 'f'), // 10
+ TAG('l', 'o', 'c', 'a'), // 11
+ TAG('p', 'r', 'e', 'p'), // 12
+ TAG('C', 'F', 'F', ' '), // 13
+ TAG('V', 'O', 'R', 'G'), // 14
+ TAG('E', 'B', 'D', 'T'), // 15
+ TAG('E', 'B', 'L', 'C'), // 16
+ TAG('g', 'a', 's', 'p'), // 17
+ TAG('h', 'd', 'm', 'x'), // 18
+ TAG('k', 'e', 'r', 'n'), // 19
+ TAG('L', 'T', 'S', 'H'), // 20
+ TAG('P', 'C', 'L', 'T'), // 21
+ TAG('V', 'D', 'M', 'X'), // 22
+ TAG('v', 'h', 'e', 'a'), // 23
+ TAG('v', 'm', 't', 'x'), // 24
+ TAG('B', 'A', 'S', 'E'), // 25
+ TAG('G', 'D', 'E', 'F'), // 26
+ TAG('G', 'P', 'O', 'S'), // 27
+ TAG('G', 'S', 'U', 'B'), // 28
+ TAG('E', 'B', 'S', 'C'), // 29
+ TAG('J', 'S', 'T', 'F'), // 30
+ TAG('M', 'A', 'T', 'H'), // 31
+ TAG('C', 'B', 'D', 'T'), // 32
+ TAG('C', 'B', 'L', 'C'), // 33
+ TAG('C', 'O', 'L', 'R'), // 34
+ TAG('C', 'P', 'A', 'L'), // 35
+ TAG('S', 'V', 'G', ' '), // 36
+ TAG('s', 'b', 'i', 'x'), // 37
+ TAG('a', 'c', 'n', 't'), // 38
+ TAG('a', 'v', 'a', 'r'), // 39
+ TAG('b', 'd', 'a', 't'), // 40
+ TAG('b', 'l', 'o', 'c'), // 41
+ TAG('b', 's', 'l', 'n'), // 42
+ TAG('c', 'v', 'a', 'r'), // 43
+ TAG('f', 'd', 's', 'c'), // 44
+ TAG('f', 'e', 'a', 't'), // 45
+ TAG('f', 'm', 't', 'x'), // 46
+ TAG('f', 'v', 'a', 'r'), // 47
+ TAG('g', 'v', 'a', 'r'), // 48
+ TAG('h', 's', 't', 'y'), // 49
+ TAG('j', 'u', 's', 't'), // 50
+ TAG('l', 'c', 'a', 'r'), // 51
+ TAG('m', 'o', 'r', 't'), // 52
+ TAG('m', 'o', 'r', 'x'), // 53
+ TAG('o', 'p', 'b', 'd'), // 54
+ TAG('p', 'r', 'o', 'p'), // 55
+ TAG('t', 'r', 'a', 'k'), // 56
+ TAG('Z', 'a', 'p', 'f'), // 57
+ TAG('S', 'i', 'l', 'f'), // 58
+ TAG('G', 'l', 'a', 't'), // 59
+ TAG('G', 'l', 'o', 'c'), // 60
+ TAG('F', 'e', 'a', 't'), // 61
+ TAG('S', 'i', 'l', 'l'), // 62
+};
+
+} // namespace woff2
diff -up webkitgtk-2.20.0/Source/ThirdParty/woff2/src/table_tags.h.remove_woff2 webkitgtk-2.20.0/Source/ThirdParty/woff2/src/table_tags.h
--- webkitgtk-2.20.0/Source/ThirdParty/woff2/src/table_tags.h.remove_woff2 2018-03-12 14:34:12.498957783 +0100
+++ webkitgtk-2.20.0/Source/ThirdParty/woff2/src/table_tags.h 2018-03-12 14:34:12.498957783 +0100
@@ -0,0 +1,30 @@
+/* Copyright 2014 Google Inc. All Rights Reserved.
+
+ Distributed under MIT license.
+ See file LICENSE for detail or copy at https://opensource.org/licenses/MIT
+*/
+
+/* Font table tags */
+
+#ifndef WOFF2_TABLE_TAGS_H_
+#define WOFF2_TABLE_TAGS_H_
+
+#include <inttypes.h>
+
+namespace woff2 {
+
+// Tags of popular tables.
+static const uint32_t kGlyfTableTag = 0x676c7966;
+static const uint32_t kHeadTableTag = 0x68656164;
+static const uint32_t kLocaTableTag = 0x6c6f6361;
+static const uint32_t kDsigTableTag = 0x44534947;
+static const uint32_t kCffTableTag = 0x43464620;
+static const uint32_t kHmtxTableTag = 0x686d7478;
+static const uint32_t kHheaTableTag = 0x68686561;
+static const uint32_t kMaxpTableTag = 0x6d617870;
+
+extern const uint32_t kKnownTags[];
+
+} // namespace woff2
+
+#endif // WOFF2_TABLE_TAGS_H_
diff -up webkitgtk-2.20.0/Source/ThirdParty/woff2/src/transform.cc.remove_woff2 webkitgtk-2.20.0/Source/ThirdParty/woff2/src/transform.cc
--- webkitgtk-2.20.0/Source/ThirdParty/woff2/src/transform.cc.remove_woff2 2018-03-12 14:34:12.499957776 +0100
+++ webkitgtk-2.20.0/Source/ThirdParty/woff2/src/transform.cc 2018-03-12 14:34:12.499957776 +0100
@@ -0,0 +1,412 @@
+/* Copyright 2013 Google Inc. All Rights Reserved.
+
+ Distributed under MIT license.
+ See file LICENSE for detail or copy at https://opensource.org/licenses/MIT
+*/
+
+/* Library for preprocessing fonts as part of the WOFF 2.0 conversion. */
+
+#include "./transform.h"
+
+#include <complex> // for std::abs
+
+#include "./buffer.h"
+#include "./font.h"
+#include "./glyph.h"
+#include "./table_tags.h"
+#include "./variable_length.h"
+
+namespace woff2 {
+
+namespace {
+
+const int FLAG_ARG_1_AND_2_ARE_WORDS = 1 << 0;
+const int FLAG_WE_HAVE_INSTRUCTIONS = 1 << 8;
+
+void WriteBytes(std::vector<uint8_t>* out, const uint8_t* data, size_t len) {
+ if (len == 0) return;
+ size_t offset = out->size();
+ out->resize(offset + len);
+ memcpy(&(*out)[offset], data, len);
+}
+
+void WriteBytes(std::vector<uint8_t>* out, const std::vector<uint8_t>& in) {
+ for (size_t i = 0; i < in.size(); ++i) {
+ out->push_back(in[i]);
+ }
+}
+
+void WriteUShort(std::vector<uint8_t>* out, int value) {
+ out->push_back(value >> 8);
+ out->push_back(value & 255);
+}
+
+void WriteLong(std::vector<uint8_t>* out, int value) {
+ out->push_back((value >> 24) & 255);
+ out->push_back((value >> 16) & 255);
+ out->push_back((value >> 8) & 255);
+ out->push_back(value & 255);
+}
+
+// Glyf table preprocessing, based on
+// GlyfEncoder.java
+class GlyfEncoder {
+ public:
+ explicit GlyfEncoder(int num_glyphs)
+ : n_glyphs_(num_glyphs) {
+ bbox_bitmap_.resize(((num_glyphs + 31) >> 5) << 2);
+ }
+
+ bool Encode(int glyph_id, const Glyph& glyph) {
+ if (glyph.composite_data_size > 0) {
+ WriteCompositeGlyph(glyph_id, glyph);
+ } else if (glyph.contours.size() > 0) {
+ WriteSimpleGlyph(glyph_id, glyph);
+ } else {
+ WriteUShort(&n_contour_stream_, 0);
+ }
+ return true;
+ }
+
+ void GetTransformedGlyfBytes(std::vector<uint8_t>* result) {
+ WriteLong(result, 0); // version
+ WriteUShort(result, n_glyphs_);
+ WriteUShort(result, 0); // index_format, will be set later
+ WriteLong(result, n_contour_stream_.size());
+ WriteLong(result, n_points_stream_.size());
+ WriteLong(result, flag_byte_stream_.size());
+ WriteLong(result, glyph_stream_.size());
+ WriteLong(result, composite_stream_.size());
+ WriteLong(result, bbox_bitmap_.size() + bbox_stream_.size());
+ WriteLong(result, instruction_stream_.size());
+ WriteBytes(result, n_contour_stream_);
+ WriteBytes(result, n_points_stream_);
+ WriteBytes(result, flag_byte_stream_);
+ WriteBytes(result, glyph_stream_);
+ WriteBytes(result, composite_stream_);
+ WriteBytes(result, bbox_bitmap_);
+ WriteBytes(result, bbox_stream_);
+ WriteBytes(result, instruction_stream_);
+ }
+
+ private:
+ void WriteInstructions(const Glyph& glyph) {
+ Write255UShort(&glyph_stream_, glyph.instructions_size);
+ WriteBytes(&instruction_stream_,
+ glyph.instructions_data, glyph.instructions_size);
+ }
+
+ bool ShouldWriteSimpleGlyphBbox(const Glyph& glyph) {
+ if (glyph.contours.empty() || glyph.contours[0].empty()) {
+ return glyph.x_min || glyph.y_min || glyph.x_max || glyph.y_max;
+ }
+
+ int16_t x_min = glyph.contours[0][0].x;
+ int16_t y_min = glyph.contours[0][0].y;
+ int16_t x_max = x_min;
+ int16_t y_max = y_min;
+ for (const auto& contour : glyph.contours) {
+ for (const auto& point : contour) {
+ if (point.x < x_min) x_min = point.x;
+ if (point.x > x_max) x_max = point.x;
+ if (point.y < y_min) y_min = point.y;
+ if (point.y > y_max) y_max = point.y;
+ }
+ }
+
+ if (glyph.x_min != x_min)
+ return true;
+ if (glyph.y_min != y_min)
+ return true;
+ if (glyph.x_max != x_max)
+ return true;
+ if (glyph.y_max != y_max)
+ return true;
+
+ return false;
+ }
+
+ void WriteSimpleGlyph(int glyph_id, const Glyph& glyph) {
+ int num_contours = glyph.contours.size();
+ WriteUShort(&n_contour_stream_, num_contours);
+ if (ShouldWriteSimpleGlyphBbox(glyph)) {
+ WriteBbox(glyph_id, glyph);
+ }
+ for (int i = 0; i < num_contours; i++) {
+ Write255UShort(&n_points_stream_, glyph.contours[i].size());
+ }
+ int lastX = 0;
+ int lastY = 0;
+ for (int i = 0; i < num_contours; i++) {
+ int num_points = glyph.contours[i].size();
+ for (int j = 0; j < num_points; j++) {
+ int x = glyph.contours[i][j].x;
+ int y = glyph.contours[i][j].y;
+ int dx = x - lastX;
+ int dy = y - lastY;
+ WriteTriplet(glyph.contours[i][j].on_curve, dx, dy);
+ lastX = x;
+ lastY = y;
+ }
+ }
+ if (num_contours > 0) {
+ WriteInstructions(glyph);
+ }
+ }
+
+ void WriteCompositeGlyph(int glyph_id, const Glyph& glyph) {
+ WriteUShort(&n_contour_stream_, -1);
+ WriteBbox(glyph_id, glyph);
+ WriteBytes(&composite_stream_,
+ glyph.composite_data,
+ glyph.composite_data_size);
+ if (glyph.have_instructions) {
+ WriteInstructions(glyph);
+ }
+ }
+
+ void WriteBbox(int glyph_id, const Glyph& glyph) {
+ bbox_bitmap_[glyph_id >> 3] |= 0x80 >> (glyph_id & 7);
+ WriteUShort(&bbox_stream_, glyph.x_min);
+ WriteUShort(&bbox_stream_, glyph.y_min);
+ WriteUShort(&bbox_stream_, glyph.x_max);
+ WriteUShort(&bbox_stream_, glyph.y_max);
+ }
+
+ void WriteTriplet(bool on_curve, int x, int y) {
+ int abs_x = std::abs(x);
+ int abs_y = std::abs(y);
+ int on_curve_bit = on_curve ? 0 : 128;
+ int x_sign_bit = (x < 0) ? 0 : 1;
+ int y_sign_bit = (y < 0) ? 0 : 1;
+ int xy_sign_bits = x_sign_bit + 2 * y_sign_bit;
+ if (x == 0 && abs_y < 1280) {
+ flag_byte_stream_.push_back(on_curve_bit +
+ ((abs_y & 0xf00) >> 7) + y_sign_bit);
+ glyph_stream_.push_back(abs_y & 0xff);
+ } else if (y == 0 && abs_x < 1280) {
+ flag_byte_stream_.push_back(on_curve_bit + 10 +
+ ((abs_x & 0xf00) >> 7) + x_sign_bit);
+ glyph_stream_.push_back(abs_x & 0xff);
+ } else if (abs_x < 65 && abs_y < 65) {
+ flag_byte_stream_.push_back(on_curve_bit + 20 +
+ ((abs_x - 1) & 0x30) +
+ (((abs_y - 1) & 0x30) >> 2) +
+ xy_sign_bits);
+ glyph_stream_.push_back((((abs_x - 1) & 0xf) << 4) | ((abs_y - 1) & 0xf));
+ } else if (abs_x < 769 && abs_y < 769) {
+ flag_byte_stream_.push_back(on_curve_bit + 84 +
+ 12 * (((abs_x - 1) & 0x300) >> 8) +
+ (((abs_y - 1) & 0x300) >> 6) + xy_sign_bits);
+ glyph_stream_.push_back((abs_x - 1) & 0xff);
+ glyph_stream_.push_back((abs_y - 1) & 0xff);
+ } else if (abs_x < 4096 && abs_y < 4096) {
+ flag_byte_stream_.push_back(on_curve_bit + 120 + xy_sign_bits);
+ glyph_stream_.push_back(abs_x >> 4);
+ glyph_stream_.push_back(((abs_x & 0xf) << 4) | (abs_y >> 8));
+ glyph_stream_.push_back(abs_y & 0xff);
+ } else {
+ flag_byte_stream_.push_back(on_curve_bit + 124 + xy_sign_bits);
+ glyph_stream_.push_back(abs_x >> 8);
+ glyph_stream_.push_back(abs_x & 0xff);
+ glyph_stream_.push_back(abs_y >> 8);
+ glyph_stream_.push_back(abs_y & 0xff);
+ }
+ }
+
+ std::vector<uint8_t> n_contour_stream_;
+ std::vector<uint8_t> n_points_stream_;
+ std::vector<uint8_t> flag_byte_stream_;
+ std::vector<uint8_t> composite_stream_;
+ std::vector<uint8_t> bbox_bitmap_;
+ std::vector<uint8_t> bbox_stream_;
+ std::vector<uint8_t> glyph_stream_;
+ std::vector<uint8_t> instruction_stream_;
+ int n_glyphs_;
+};
+
+} // namespace
+
+bool TransformGlyfAndLocaTables(Font* font) {
+ // no transform for CFF
+ const Font::Table* glyf_table = font->FindTable(kGlyfTableTag);
+ const Font::Table* loca_table = font->FindTable(kLocaTableTag);
+
+ // If you don't have glyf/loca this transform isn't very interesting
+ if (loca_table == NULL && glyf_table == NULL) {
+ return true;
+ }
+ // It would be best if you didn't have just one of glyf/loca
+ if ((glyf_table == NULL) != (loca_table == NULL)) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ // Must share neither or both loca & glyf
+ if (loca_table->IsReused() != glyf_table->IsReused()) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ if (loca_table->IsReused()) {
+ return true;
+ }
+
+ Font::Table* transformed_glyf = &font->tables[kGlyfTableTag ^ 0x80808080];
+ Font::Table* transformed_loca = &font->tables[kLocaTableTag ^ 0x80808080];
+
+ int num_glyphs = NumGlyphs(*font);
+ GlyfEncoder encoder(num_glyphs);
+ for (int i = 0; i < num_glyphs; ++i) {
+ Glyph glyph;
+ const uint8_t* glyph_data;
+ size_t glyph_size;
+ if (!GetGlyphData(*font, i, &glyph_data, &glyph_size) ||
+ (glyph_size > 0 && !ReadGlyph(glyph_data, glyph_size, &glyph))) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ encoder.Encode(i, glyph);
+ }
+ encoder.GetTransformedGlyfBytes(&transformed_glyf->buffer);
+
+ const Font::Table* head_table = font->FindTable(kHeadTableTag);
+ if (head_table == NULL || head_table->length < 52) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ transformed_glyf->buffer[7] = head_table->data[51]; // index_format
+
+ transformed_glyf->tag = kGlyfTableTag ^ 0x80808080;
+ transformed_glyf->length = transformed_glyf->buffer.size();
+ transformed_glyf->data = transformed_glyf->buffer.data();
+
+ transformed_loca->tag = kLocaTableTag ^ 0x80808080;
+ transformed_loca->length = 0;
+ transformed_loca->data = NULL;
+
+ return true;
+}
+
+// See https://www.microsoft.com/typography/otspec/hmtx.htm
+// See WOFF2 spec, 5.4. Transformed hmtx table format
+bool TransformHmtxTable(Font* font) {
+ const Font::Table* glyf_table = font->FindTable(kGlyfTableTag);
+ const Font::Table* hmtx_table = font->FindTable(kHmtxTableTag);
+ const Font::Table* hhea_table = font->FindTable(kHheaTableTag);
+
+ // If you don't have hmtx or a glyf not much is going to happen here
+ if (hmtx_table == NULL || glyf_table == NULL) {
+ return true;
+ }
+
+ // hmtx without hhea doesn't make sense
+ if (hhea_table == NULL) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+
+ // Skip 34 to reach 'hhea' numberOfHMetrics
+ Buffer hhea_buf(hhea_table->data, hhea_table->length);
+ uint16_t num_hmetrics;
+ if (!hhea_buf.Skip(34) || !hhea_buf.ReadU16(&num_hmetrics)) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+
+ // Must have at least one hMetric
+ if (num_hmetrics < 1) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+
+ int num_glyphs = NumGlyphs(*font);
+
+ // Most fonts can be transformed; assume it's a go until proven otherwise
+ std::vector<uint16_t> advance_widths;
+ std::vector<int16_t> proportional_lsbs;
+ std::vector<int16_t> monospace_lsbs;
+
+ bool remove_proportional_lsb = true;
+ bool remove_monospace_lsb = (num_glyphs - num_hmetrics) > 0;
+
+ Buffer hmtx_buf(hmtx_table->data, hmtx_table->length);
+ for (int i = 0; i < num_glyphs; i++) {
+ Glyph glyph;
+ const uint8_t* glyph_data;
+ size_t glyph_size;
+ if (!GetGlyphData(*font, i, &glyph_data, &glyph_size) ||
+ (glyph_size > 0 && !ReadGlyph(glyph_data, glyph_size, &glyph))) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+
+ uint16_t advance_width = 0;
+ int16_t lsb = 0;
+
+ if (i < num_hmetrics) {
+ // [0, num_hmetrics) are proportional hMetrics
+ if (!hmtx_buf.ReadU16(&advance_width)) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+
+ if (!hmtx_buf.ReadS16(&lsb)) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+
+ if (glyph_size > 0 && glyph.x_min != lsb) {
+ remove_proportional_lsb = false;
+ }
+
+ advance_widths.push_back(advance_width);
+ proportional_lsbs.push_back(lsb);
+ } else {
+ // [num_hmetrics, num_glyphs) are monospace leftSideBearing's
+ if (!hmtx_buf.ReadS16(&lsb)) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ if (glyph_size > 0 && glyph.x_min != lsb) {
+ remove_monospace_lsb = false;
+ }
+ monospace_lsbs.push_back(lsb);
+ }
+
+ // If we know we can't optimize, bail out completely
+ if (!remove_proportional_lsb && !remove_monospace_lsb) {
+ return true;
+ }
+ }
+
+ Font::Table* transformed_hmtx = &font->tables[kHmtxTableTag ^ 0x80808080];
+
+ uint8_t flags = 0;
+ size_t transformed_size = 1 + 2 * advance_widths.size();
+ if (remove_proportional_lsb) {
+ flags |= 1;
+ } else {
+ transformed_size += 2 * proportional_lsbs.size();
+ }
+ if (remove_monospace_lsb) {
+ flags |= 1 << 1;
+ } else {
+ transformed_size += 2 * monospace_lsbs.size();
+ }
+
+ transformed_hmtx->buffer.reserve(transformed_size);
+ std::vector<uint8_t>* out = &transformed_hmtx->buffer;
+ WriteBytes(out, &flags, 1);
+ for (uint16_t advance_width : advance_widths) {
+ WriteUShort(out, advance_width);
+ }
+
+ if (!remove_proportional_lsb) {
+ for (int16_t lsb : proportional_lsbs) {
+ WriteUShort(out, lsb);
+ }
+ }
+ if (!remove_monospace_lsb) {
+ for (int16_t lsb : monospace_lsbs) {
+ WriteUShort(out, lsb);
+ }
+ }
+
+ transformed_hmtx->tag = kHmtxTableTag ^ 0x80808080;
+ transformed_hmtx->flag_byte = 1 << 6;
+ transformed_hmtx->length = transformed_hmtx->buffer.size();
+ transformed_hmtx->data = transformed_hmtx->buffer.data();
+
+
+ return true;
+}
+
+} // namespace woff2
diff -up webkitgtk-2.20.0/Source/ThirdParty/woff2/src/transform.h.remove_woff2 webkitgtk-2.20.0/Source/ThirdParty/woff2/src/transform.h
--- webkitgtk-2.20.0/Source/ThirdParty/woff2/src/transform.h.remove_woff2 2018-03-12 14:34:12.500957768 +0100
+++ webkitgtk-2.20.0/Source/ThirdParty/woff2/src/transform.h 2018-03-12 14:34:12.500957768 +0100
@@ -0,0 +1,26 @@
+/* Copyright 2014 Google Inc. All Rights Reserved.
+
+ Distributed under MIT license.
+ See file LICENSE for detail or copy at https://opensource.org/licenses/MIT
+*/
+
+/* Library for preprocessing fonts as part of the WOFF 2.0 conversion. */
+
+#ifndef WOFF2_TRANSFORM_H_
+#define WOFF2_TRANSFORM_H_
+
+#include "./font.h"
+
+namespace woff2 {
+
+// Adds the transformed versions of the glyf and loca tables to the font. The
+// transformed loca table has zero length. The tag of the transformed tables is
+// derived from the original tag by flipping the MSBs of every byte.
+bool TransformGlyfAndLocaTables(Font* font);
+
+// Apply transformation to hmtx table if applicable for this font.
+bool TransformHmtxTable(Font* font);
+
+} // namespace woff2
+
+#endif // WOFF2_TRANSFORM_H_
diff -up webkitgtk-2.20.0/Source/ThirdParty/woff2/src/variable_length.cc.remove_woff2 webkitgtk-2.20.0/Source/ThirdParty/woff2/src/variable_length.cc
--- webkitgtk-2.20.0/Source/ThirdParty/woff2/src/variable_length.cc.remove_woff2 2018-03-12 14:34:12.500957768 +0100
+++ webkitgtk-2.20.0/Source/ThirdParty/woff2/src/variable_length.cc 2018-03-12 14:34:12.500957768 +0100
@@ -0,0 +1,129 @@
+/* Copyright 2015 Google Inc. All Rights Reserved.
+
+ Distributed under MIT license.
+ See file LICENSE for detail or copy at https://opensource.org/licenses/MIT
+*/
+
+/* Helper functions for woff2 variable length types: 255UInt16 and UIntBase128 */
+
+#include "./variable_length.h"
+
+namespace woff2 {
+
+size_t Size255UShort(uint16_t value) {
+ size_t result = 3;
+ if (value < 253) {
+ result = 1;
+ } else if (value < 762) {
+ result = 2;
+ } else {
+ result = 3;
+ }
+ return result;
+}
+
+void Write255UShort(std::vector<uint8_t>* out, int value) {
+ if (value < 253) {
+ out->push_back(value);
+ } else if (value < 506) {
+ out->push_back(255);
+ out->push_back(value - 253);
+ } else if (value < 762) {
+ out->push_back(254);
+ out->push_back(value - 506);
+ } else {
+ out->push_back(253);
+ out->push_back(value >> 8);
+ out->push_back(value & 0xff);
+ }
+}
+
+void Store255UShort(int val, size_t* offset, uint8_t* dst) {
+ std::vector<uint8_t> packed;
+ Write255UShort(&packed, val);
+ for (uint8_t packed_byte : packed) {
+ dst[(*offset)++] = packed_byte;
+ }
+}
+
+// Based on section 6.1.1 of MicroType Express draft spec
+bool Read255UShort(Buffer* buf, unsigned int* value) {
+ static const int kWordCode = 253;
+ static const int kOneMoreByteCode2 = 254;
+ static const int kOneMoreByteCode1 = 255;
+ static const int kLowestUCode = 253;
+ uint8_t code = 0;
+ if (!buf->ReadU8(&code)) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ if (code == kWordCode) {
+ uint16_t result = 0;
+ if (!buf->ReadU16(&result)) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ *value = result;
+ return true;
+ } else if (code == kOneMoreByteCode1) {
+ uint8_t result = 0;
+ if (!buf->ReadU8(&result)) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ *value = result + kLowestUCode;
+ return true;
+ } else if (code == kOneMoreByteCode2) {
+ uint8_t result = 0;
+ if (!buf->ReadU8(&result)) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ *value = result + kLowestUCode * 2;
+ return true;
+ } else {
+ *value = code;
+ return true;
+ }
+}
+
+bool ReadBase128(Buffer* buf, uint32_t* value) {
+ uint32_t result = 0;
+ for (size_t i = 0; i < 5; ++i) {
+ uint8_t code = 0;
+ if (!buf->ReadU8(&code)) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ // Leading zeros are invalid.
+ if (i == 0 && code == 0x80) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ // If any of the top seven bits are set then we're about to overflow.
+ if (result & 0xfe000000) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ result = (result << 7) | (code & 0x7f);
+ if ((code & 0x80) == 0) {
+ *value = result;
+ return true;
+ }
+ }
+ // Make sure not to exceed the size bound
+ return FONT_COMPRESSION_FAILURE();
+}
+
+size_t Base128Size(size_t n) {
+ size_t size = 1;
+ for (; n >= 128; n >>= 7) ++size;
+ return size;
+}
+
+void StoreBase128(size_t len, size_t* offset, uint8_t* dst) {
+ size_t size = Base128Size(len);
+ for (size_t i = 0; i < size; ++i) {
+ int b = static_cast<int>((len >> (7 * (size - i - 1))) & 0x7f);
+ if (i < size - 1) {
+ b |= 0x80;
+ }
+ dst[(*offset)++] = b;
+ }
+}
+
+} // namespace woff2
+
diff -up webkitgtk-2.20.0/Source/ThirdParty/woff2/src/variable_length.h.remove_woff2 webkitgtk-2.20.0/Source/ThirdParty/woff2/src/variable_length.h
--- webkitgtk-2.20.0/Source/ThirdParty/woff2/src/variable_length.h.remove_woff2 2018-03-12 14:34:12.500957768 +0100
+++ webkitgtk-2.20.0/Source/ThirdParty/woff2/src/variable_length.h 2018-03-12 14:34:12.500957768 +0100
@@ -0,0 +1,30 @@
+/* Copyright 2015 Google Inc. All Rights Reserved.
+
+ Distributed under MIT license.
+ See file LICENSE for detail or copy at https://opensource.org/licenses/MIT
+*/
+
+/* Helper functions for woff2 variable length types: 255UInt16 and UIntBase128 */
+
+#ifndef WOFF2_VARIABLE_LENGTH_H_
+#define WOFF2_VARIABLE_LENGTH_H_
+
+#include <inttypes.h>
+#include <vector>
+#include "./buffer.h"
+
+namespace woff2 {
+
+size_t Size255UShort(uint16_t value);
+bool Read255UShort(Buffer* buf, unsigned int* value);
+void Write255UShort(std::vector<uint8_t>* out, int value);
+void Store255UShort(int val, size_t* offset, uint8_t* dst);
+
+size_t Base128Size(size_t n);
+bool ReadBase128(Buffer* buf, uint32_t* value);
+void StoreBase128(size_t len, size_t* offset, uint8_t* dst);
+
+} // namespace woff2
+
+#endif // WOFF2_VARIABLE_LENGTH_H_
+
diff -up webkitgtk-2.20.0/Source/ThirdParty/woff2/src/woff2_common.cc.remove_woff2 webkitgtk-2.20.0/Source/ThirdParty/woff2/src/woff2_common.cc
--- webkitgtk-2.20.0/Source/ThirdParty/woff2/src/woff2_common.cc.remove_woff2 2018-03-12 14:34:12.501957761 +0100
+++ webkitgtk-2.20.0/Source/ThirdParty/woff2/src/woff2_common.cc 2018-03-12 14:34:12.501957761 +0100
@@ -0,0 +1,58 @@
+/* Copyright 2013 Google Inc. All Rights Reserved.
+
+ Distributed under MIT license.
+ See file LICENSE for detail or copy at https://opensource.org/licenses/MIT
+*/
+
+/* Helpers common across multiple parts of woff2 */
+
+#include <algorithm>
+
+#include "./woff2_common.h"
+
+#include "./port.h"
+
+namespace woff2 {
+
+
+uint32_t ComputeULongSum(const uint8_t* buf, size_t size) {
+ uint32_t checksum = 0;
+ size_t aligned_size = size & ~3;
+ for (size_t i = 0; i < aligned_size; i += 4) {
+#if defined(WOFF_LITTLE_ENDIAN)
+ uint32_t v = *reinterpret_cast<const uint32_t*>(buf + i);
+ checksum += (((v & 0xFF) << 24) | ((v & 0xFF00) << 8) |
+ ((v & 0xFF0000) >> 8) | ((v & 0xFF000000) >> 24));
+#elif defined(WOFF_BIG_ENDIAN)
+ checksum += *reinterpret_cast<const uint32_t*>(buf + i);
+#else
+ checksum += (buf[i] << 24) | (buf[i + 1] << 16) |
+ (buf[i + 2] << 8) | buf[i + 3];
+#endif
+ }
+
+ // treat size not aligned on 4 as if it were padded to 4 with 0's
+ if (size != aligned_size) {
+ uint32_t v = 0;
+ for (size_t i = aligned_size; i < size; ++i) {
+ v |= buf[i] << (24 - 8 * (i & 3));
+ }
+ checksum += v;
+ }
+
+ return checksum;
+}
+
+size_t CollectionHeaderSize(uint32_t header_version, uint32_t num_fonts) {
+ size_t size = 0;
+ if (header_version == 0x00020000) {
+ size += 12; // ulDsig{Tag,Length,Offset}
+ }
+ if (header_version == 0x00010000 || header_version == 0x00020000) {
+ size += 12 // TTCTag, Version, numFonts
+ + 4 * num_fonts; // OffsetTable[numFonts]
+ }
+ return size;
+}
+
+} // namespace woff2
diff -up webkitgtk-2.20.0/Source/ThirdParty/woff2/src/woff2_common.h.remove_woff2 webkitgtk-2.20.0/Source/ThirdParty/woff2/src/woff2_common.h
--- webkitgtk-2.20.0/Source/ThirdParty/woff2/src/woff2_common.h.remove_woff2 2018-03-12 14:34:12.501957761 +0100
+++ webkitgtk-2.20.0/Source/ThirdParty/woff2/src/woff2_common.h 2018-03-12 14:34:12.501957761 +0100
@@ -0,0 +1,64 @@
+/* Copyright 2014 Google Inc. All Rights Reserved.
+
+ Distributed under MIT license.
+ See file LICENSE for detail or copy at https://opensource.org/licenses/MIT
+*/
+
+/* Common definition for WOFF2 encoding/decoding */
+
+#ifndef WOFF2_WOFF2_COMMON_H_
+#define WOFF2_WOFF2_COMMON_H_
+
+#include <stddef.h>
+#include <inttypes.h>
+
+#include <string>
+
+namespace woff2 {
+
+static const uint32_t kWoff2Signature = 0x774f4632; // "wOF2"
+
+// Leave the first byte open to store flag_byte
+const unsigned int kWoff2FlagsTransform = 1 << 8;
+
+// TrueType Collection ID string: 'ttcf'
+static const uint32_t kTtcFontFlavor = 0x74746366;
+
+static const size_t kSfntHeaderSize = 12;
+static const size_t kSfntEntrySize = 16;
+
+struct Point {
+ int x;
+ int y;
+ bool on_curve;
+};
+
+struct Table {
+ uint32_t tag;
+ uint32_t flags;
+ uint32_t src_offset;
+ uint32_t src_length;
+
+ uint32_t transform_length;
+
+ uint32_t dst_offset;
+ uint32_t dst_length;
+ const uint8_t* dst_data;
+
+ bool operator<(const Table& other) const {
+ return tag < other.tag;
+ }
+};
+
+
+// Size of the collection header. 0 if version indicates this isn't a
+// collection. Ref http://www.microsoft.com/typography/otspec/otff.htm,
+// True Type Collections
+size_t CollectionHeaderSize(uint32_t header_version, uint32_t num_fonts);
+
+// Compute checksum over size bytes of buf
+uint32_t ComputeULongSum(const uint8_t* buf, size_t size);
+
+} // namespace woff2
+
+#endif // WOFF2_WOFF2_COMMON_H_
diff -up webkitgtk-2.20.0/Source/ThirdParty/woff2/src/woff2_compress.cc.remove_woff2 webkitgtk-2.20.0/Source/ThirdParty/woff2/src/woff2_compress.cc
--- webkitgtk-2.20.0/Source/ThirdParty/woff2/src/woff2_compress.cc.remove_woff2 2018-03-12 14:34:12.501957761 +0100
+++ webkitgtk-2.20.0/Source/ThirdParty/woff2/src/woff2_compress.cc 2018-03-12 14:34:12.501957761 +0100
@@ -0,0 +1,45 @@
+/* Copyright 2013 Google Inc. All Rights Reserved.
+
+ Distributed under MIT license.
+ See file LICENSE for detail or copy at https://opensource.org/licenses/MIT
+*/
+
+/* A commandline tool for compressing ttf format files to woff2. */
+
+#include <string>
+
+#include "file.h"
+#include <woff2/encode.h>
+
+
+int main(int argc, char **argv) {
+ using std::string;
+
+ if (argc != 2) {
+ fprintf(stderr, "One argument, the input filename, must be provided.\n");
+ return 1;
+ }
+
+ string filename(argv[1]);
+ string outfilename = filename.substr(0, filename.find_last_of(".")) + ".woff2";
+ fprintf(stdout, "Processing %s => %s\n",
+ filename.c_str(), outfilename.c_str());
+ string input = woff2::GetFileContent(filename);
+
+ const uint8_t* input_data = reinterpret_cast<const uint8_t*>(input.data());
+ size_t output_size = woff2::MaxWOFF2CompressedSize(input_data, input.size());
+ string output(output_size, 0);
+ uint8_t* output_data = reinterpret_cast<uint8_t*>(&output[0]);
+
+ woff2::WOFF2Params params;
+ if (!woff2::ConvertTTFToWOFF2(input_data, input.size(),
+ output_data, &output_size, params)) {
+ fprintf(stderr, "Compression failed.\n");
+ return 1;
+ }
+ output.resize(output_size);
+
+ woff2::SetFileContents(outfilename, output.begin(), output.end());
+
+ return 0;
+}
diff -up webkitgtk-2.20.0/Source/ThirdParty/woff2/src/woff2_dec.cc.remove_woff2 webkitgtk-2.20.0/Source/ThirdParty/woff2/src/woff2_dec.cc
--- webkitgtk-2.20.0/Source/ThirdParty/woff2/src/woff2_dec.cc.remove_woff2 2018-03-12 14:34:12.502957753 +0100
+++ webkitgtk-2.20.0/Source/ThirdParty/woff2/src/woff2_dec.cc 2018-03-12 14:34:12.502957753 +0100
@@ -0,0 +1,1358 @@
+/* Copyright 2014 Google Inc. All Rights Reserved.
+
+ Distributed under MIT license.
+ See file LICENSE for detail or copy at https://opensource.org/licenses/MIT
+*/
+
+/* Library for converting WOFF2 format font files to their TTF versions. */
+
+#include <woff2/decode.h>
+
+#include <stdlib.h>
+#include <algorithm>
+#include <complex>
+#include <cstring>
+#include <limits>
+#include <string>
+#include <vector>
+#include <map>
+#include <memory>
+#include <utility>
+
+#include <brotli/decode.h>
+#include "./buffer.h"
+#include "./port.h"
+#include "./round.h"
+#include "./store_bytes.h"
+#include "./table_tags.h"
+#include "./variable_length.h"
+#include "./woff2_common.h"
+
+namespace woff2 {
+
+namespace {
+
+using std::string;
+using std::vector;
+
+
+// simple glyph flags
+const int kGlyfOnCurve = 1 << 0;
+const int kGlyfXShort = 1 << 1;
+const int kGlyfYShort = 1 << 2;
+const int kGlyfRepeat = 1 << 3;
+const int kGlyfThisXIsSame = 1 << 4;
+const int kGlyfThisYIsSame = 1 << 5;
+
+// composite glyph flags
+// See CompositeGlyph.java in sfntly for full definitions
+const int FLAG_ARG_1_AND_2_ARE_WORDS = 1 << 0;
+const int FLAG_WE_HAVE_A_SCALE = 1 << 3;
+const int FLAG_MORE_COMPONENTS = 1 << 5;
+const int FLAG_WE_HAVE_AN_X_AND_Y_SCALE = 1 << 6;
+const int FLAG_WE_HAVE_A_TWO_BY_TWO = 1 << 7;
+const int FLAG_WE_HAVE_INSTRUCTIONS = 1 << 8;
+
+const size_t kCheckSumAdjustmentOffset = 8;
+
+const size_t kEndPtsOfContoursOffset = 10;
+const size_t kCompositeGlyphBegin = 10;
+
+// 98% of Google Fonts have no glyph above 5k bytes
+// Largest glyph ever observed was 72k bytes
+const size_t kDefaultGlyphBuf = 5120;
+
+// Over 14k test fonts the max compression ratio seen to date was ~20.
+// >100 suggests you wrote a bad uncompressed size.
+const float kMaxPlausibleCompressionRatio = 100.0;
+
+// metadata for a TTC font entry
+struct TtcFont {
+ uint32_t flavor;
+ uint32_t dst_offset;
+ uint32_t header_checksum;
+ std::vector<uint16_t> table_indices;
+};
+
+struct WOFF2Header {
+ uint32_t flavor;
+ uint32_t header_version;
+ uint16_t num_tables;
+ uint64_t compressed_offset;
+ uint32_t compressed_length;
+ uint32_t uncompressed_size;
+ std::vector<Table> tables; // num_tables unique tables
+ std::vector<TtcFont> ttc_fonts; // metadata to help rebuild font
+};
+
+/**
+ * Accumulates data we may need to reconstruct a single font. One per font
+ * created for a TTC.
+ */
+struct WOFF2FontInfo {
+ uint16_t num_glyphs;
+ uint16_t index_format;
+ uint16_t num_hmetrics;
+ std::vector<int16_t> x_mins;
+ std::map<uint32_t, uint32_t> table_entry_by_tag;
+};
+
+// Accumulates metadata as we rebuild the font
+struct RebuildMetadata {
+ uint32_t header_checksum; // set by WriteHeaders
+ std::vector<WOFF2FontInfo> font_infos;
+ // checksums for tables that have been written.
+ // (tag, src_offset) => checksum. Need both because 0-length loca.
+ std::map<std::pair<uint32_t, uint32_t>, uint32_t> checksums;
+};
+
+int WithSign(int flag, int baseval) {
+ // Precondition: 0 <= baseval < 65536 (to avoid integer overflow)
+ return (flag & 1) ? baseval : -baseval;
+}
+
+bool TripletDecode(const uint8_t* flags_in, const uint8_t* in, size_t in_size,
+ unsigned int n_points, Point* result, size_t* in_bytes_consumed) {
+ int x = 0;
+ int y = 0;
+
+ if (PREDICT_FALSE(n_points > in_size)) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ unsigned int triplet_index = 0;
+
+ for (unsigned int i = 0; i < n_points; ++i) {
+ uint8_t flag = flags_in[i];
+ bool on_curve = !(flag >> 7);
+ flag &= 0x7f;
+ unsigned int n_data_bytes;
+ if (flag < 84) {
+ n_data_bytes = 1;
+ } else if (flag < 120) {
+ n_data_bytes = 2;
+ } else if (flag < 124) {
+ n_data_bytes = 3;
+ } else {
+ n_data_bytes = 4;
+ }
+ if (PREDICT_FALSE(triplet_index + n_data_bytes > in_size ||
+ triplet_index + n_data_bytes < triplet_index)) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ int dx, dy;
+ if (flag < 10) {
+ dx = 0;
+ dy = WithSign(flag, ((flag & 14) << 7) + in[triplet_index]);
+ } else if (flag < 20) {
+ dx = WithSign(flag, (((flag - 10) & 14) << 7) + in[triplet_index]);
+ dy = 0;
+ } else if (flag < 84) {
+ int b0 = flag - 20;
+ int b1 = in[triplet_index];
+ dx = WithSign(flag, 1 + (b0 & 0x30) + (b1 >> 4));
+ dy = WithSign(flag >> 1, 1 + ((b0 & 0x0c) << 2) + (b1 & 0x0f));
+ } else if (flag < 120) {
+ int b0 = flag - 84;
+ dx = WithSign(flag, 1 + ((b0 / 12) << 8) + in[triplet_index]);
+ dy = WithSign(flag >> 1,
+ 1 + (((b0 % 12) >> 2) << 8) + in[triplet_index + 1]);
+ } else if (flag < 124) {
+ int b2 = in[triplet_index + 1];
+ dx = WithSign(flag, (in[triplet_index] << 4) + (b2 >> 4));
+ dy = WithSign(flag >> 1, ((b2 & 0x0f) << 8) + in[triplet_index + 2]);
+ } else {
+ dx = WithSign(flag, (in[triplet_index] << 8) + in[triplet_index + 1]);
+ dy = WithSign(flag >> 1,
+ (in[triplet_index + 2] << 8) + in[triplet_index + 3]);
+ }
+ triplet_index += n_data_bytes;
+ // Possible overflow but coordinate values are not security sensitive
+ x += dx;
+ y += dy;
+ *result++ = {x, y, on_curve};
+ }
+ *in_bytes_consumed = triplet_index;
+ return true;
+}
+
+// This function stores just the point data. On entry, dst points to the
+// beginning of a simple glyph. Returns true on success.
+bool StorePoints(unsigned int n_points, const Point* points,
+ unsigned int n_contours, unsigned int instruction_length,
+ uint8_t* dst, size_t dst_size, size_t* glyph_size) {
+ // I believe that n_contours < 65536, in which case this is safe. However, a
+ // comment and/or an assert would be good.
+ unsigned int flag_offset = kEndPtsOfContoursOffset + 2 * n_contours + 2 +
+ instruction_length;
+ int last_flag = -1;
+ int repeat_count = 0;
+ int last_x = 0;
+ int last_y = 0;
+ unsigned int x_bytes = 0;
+ unsigned int y_bytes = 0;
+
+ for (unsigned int i = 0; i < n_points; ++i) {
+ const Point& point = points[i];
+ int flag = point.on_curve ? kGlyfOnCurve : 0;
+ int dx = point.x - last_x;
+ int dy = point.y - last_y;
+ if (dx == 0) {
+ flag |= kGlyfThisXIsSame;
+ } else if (dx > -256 && dx < 256) {
+ flag |= kGlyfXShort | (dx > 0 ? kGlyfThisXIsSame : 0);
+ x_bytes += 1;
+ } else {
+ x_bytes += 2;
+ }
+ if (dy == 0) {
+ flag |= kGlyfThisYIsSame;
+ } else if (dy > -256 && dy < 256) {
+ flag |= kGlyfYShort | (dy > 0 ? kGlyfThisYIsSame : 0);
+ y_bytes += 1;
+ } else {
+ y_bytes += 2;
+ }
+
+ if (flag == last_flag && repeat_count != 255) {
+ dst[flag_offset - 1] |= kGlyfRepeat;
+ repeat_count++;
+ } else {
+ if (repeat_count != 0) {
+ if (PREDICT_FALSE(flag_offset >= dst_size)) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ dst[flag_offset++] = repeat_count;
+ }
+ if (PREDICT_FALSE(flag_offset >= dst_size)) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ dst[flag_offset++] = flag;
+ repeat_count = 0;
+ }
+ last_x = point.x;
+ last_y = point.y;
+ last_flag = flag;
+ }
+
+ if (repeat_count != 0) {
+ if (PREDICT_FALSE(flag_offset >= dst_size)) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ dst[flag_offset++] = repeat_count;
+ }
+ unsigned int xy_bytes = x_bytes + y_bytes;
+ if (PREDICT_FALSE(xy_bytes < x_bytes ||
+ flag_offset + xy_bytes < flag_offset ||
+ flag_offset + xy_bytes > dst_size)) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+
+ int x_offset = flag_offset;
+ int y_offset = flag_offset + x_bytes;
+ last_x = 0;
+ last_y = 0;
+ for (unsigned int i = 0; i < n_points; ++i) {
+ int dx = points[i].x - last_x;
+ if (dx == 0) {
+ // pass
+ } else if (dx > -256 && dx < 256) {
+ dst[x_offset++] = std::abs(dx);
+ } else {
+ // will always fit for valid input, but overflow is harmless
+ x_offset = Store16(dst, x_offset, dx);
+ }
+ last_x += dx;
+ int dy = points[i].y - last_y;
+ if (dy == 0) {
+ // pass
+ } else if (dy > -256 && dy < 256) {
+ dst[y_offset++] = std::abs(dy);
+ } else {
+ y_offset = Store16(dst, y_offset, dy);
+ }
+ last_y += dy;
+ }
+ *glyph_size = y_offset;
+ return true;
+}
+
+// Compute the bounding box of the coordinates, and store into a glyf buffer.
+// A precondition is that there are at least 10 bytes available.
+// dst should point to the beginning of a 'glyf' record.
+void ComputeBbox(unsigned int n_points, const Point* points, uint8_t* dst) {
+ int x_min = 0;
+ int y_min = 0;
+ int x_max = 0;
+ int y_max = 0;
+
+ if (n_points > 0) {
+ x_min = points[0].x;
+ x_max = points[0].x;
+ y_min = points[0].y;
+ y_max = points[0].y;
+ }
+ for (unsigned int i = 1; i < n_points; ++i) {
+ int x = points[i].x;
+ int y = points[i].y;
+ x_min = std::min(x, x_min);
+ x_max = std::max(x, x_max);
+ y_min = std::min(y, y_min);
+ y_max = std::max(y, y_max);
+ }
+ size_t offset = 2;
+ offset = Store16(dst, offset, x_min);
+ offset = Store16(dst, offset, y_min);
+ offset = Store16(dst, offset, x_max);
+ offset = Store16(dst, offset, y_max);
+}
+
+
+bool SizeOfComposite(Buffer composite_stream, size_t* size,
+ bool* have_instructions) {
+ size_t start_offset = composite_stream.offset();
+ bool we_have_instructions = false;
+
+ uint16_t flags = FLAG_MORE_COMPONENTS;
+ while (flags & FLAG_MORE_COMPONENTS) {
+ if (PREDICT_FALSE(!composite_stream.ReadU16(&flags))) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ we_have_instructions |= (flags & FLAG_WE_HAVE_INSTRUCTIONS) != 0;
+ size_t arg_size = 2; // glyph index
+ if (flags & FLAG_ARG_1_AND_2_ARE_WORDS) {
+ arg_size += 4;
+ } else {
+ arg_size += 2;
+ }
+ if (flags & FLAG_WE_HAVE_A_SCALE) {
+ arg_size += 2;
+ } else if (flags & FLAG_WE_HAVE_AN_X_AND_Y_SCALE) {
+ arg_size += 4;
+ } else if (flags & FLAG_WE_HAVE_A_TWO_BY_TWO) {
+ arg_size += 8;
+ }
+ if (PREDICT_FALSE(!composite_stream.Skip(arg_size))) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ }
+
+ *size = composite_stream.offset() - start_offset;
+ *have_instructions = we_have_instructions;
+
+ return true;
+}
+
+bool Pad4(WOFF2Out* out) {
+ uint8_t zeroes[] = {0, 0, 0};
+ if (PREDICT_FALSE(out->Size() + 3 < out->Size())) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ uint32_t pad_bytes = Round4(out->Size()) - out->Size();
+ if (pad_bytes > 0) {
+ if (PREDICT_FALSE(!out->Write(&zeroes, pad_bytes))) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ }
+ return true;
+}
+
+// Build TrueType loca table
+bool StoreLoca(const std::vector<uint32_t>& loca_values, int index_format,
+ uint32_t* checksum, WOFF2Out* out) {
+ // TODO(user) figure out what index format to use based on whether max
+ // offset fits into uint16_t or not
+ const uint64_t loca_size = loca_values.size();
+ const uint64_t offset_size = index_format ? 4 : 2;
+ if (PREDICT_FALSE((loca_size << 2) >> 2 != loca_size)) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ std::vector<uint8_t> loca_content(loca_size * offset_size);
+ uint8_t* dst = &loca_content[0];
+ size_t offset = 0;
+ for (size_t i = 0; i < loca_values.size(); ++i) {
+ uint32_t value = loca_values[i];
+ if (index_format) {
+ offset = StoreU32(dst, offset, value);
+ } else {
+ offset = Store16(dst, offset, value >> 1);
+ }
+ }
+ *checksum = ComputeULongSum(&loca_content[0], loca_content.size());
+ if (PREDICT_FALSE(!out->Write(&loca_content[0], loca_content.size()))) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ return true;
+}
+
+// Reconstruct entire glyf table based on transformed original
+bool ReconstructGlyf(const uint8_t* data, Table* glyf_table,
+ uint32_t* glyf_checksum, Table * loca_table,
+ uint32_t* loca_checksum, WOFF2FontInfo* info,
+ WOFF2Out* out) {
+ static const int kNumSubStreams = 7;
+ Buffer file(data, glyf_table->transform_length);
+ uint32_t version;
+ std::vector<std::pair<const uint8_t*, size_t> > substreams(kNumSubStreams);
+ const size_t glyf_start = out->Size();
+
+ if (PREDICT_FALSE(!file.ReadU32(&version))) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ if (PREDICT_FALSE(!file.ReadU16(&info->num_glyphs) ||
+ !file.ReadU16(&info->index_format))) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+
+ // https://dev.w3.org/webfonts/WOFF2/spec/#conform-mustRejectLoca
+ // dst_length here is origLength in the spec
+ uint32_t expected_loca_dst_length = (info->index_format ? 4 : 2)
+ * (static_cast<uint32_t>(info->num_glyphs) + 1);
+ if (PREDICT_FALSE(loca_table->dst_length != expected_loca_dst_length)) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+
+ unsigned int offset = (2 + kNumSubStreams) * 4;
+ if (PREDICT_FALSE(offset > glyf_table->transform_length)) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ // Invariant from here on: data_size >= offset
+ for (int i = 0; i < kNumSubStreams; ++i) {
+ uint32_t substream_size;
+ if (PREDICT_FALSE(!file.ReadU32(&substream_size))) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ if (PREDICT_FALSE(substream_size > glyf_table->transform_length - offset)) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ substreams[i] = std::make_pair(data + offset, substream_size);
+ offset += substream_size;
+ }
+ Buffer n_contour_stream(substreams[0].first, substreams[0].second);
+ Buffer n_points_stream(substreams[1].first, substreams[1].second);
+ Buffer flag_stream(substreams[2].first, substreams[2].second);
+ Buffer glyph_stream(substreams[3].first, substreams[3].second);
+ Buffer composite_stream(substreams[4].first, substreams[4].second);
+ Buffer bbox_stream(substreams[5].first, substreams[5].second);
+ Buffer instruction_stream(substreams[6].first, substreams[6].second);
+
+ std::vector<uint32_t> loca_values(info->num_glyphs + 1);
+ std::vector<unsigned int> n_points_vec;
+ std::unique_ptr<Point[]> points;
+ size_t points_size = 0;
+ const uint8_t* bbox_bitmap = bbox_stream.buffer();
+ // Safe because num_glyphs is bounded
+ unsigned int bitmap_length = ((info->num_glyphs + 31) >> 5) << 2;
+ if (!bbox_stream.Skip(bitmap_length)) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+
+ // Temp buffer for glyph's.
+ size_t glyph_buf_size = kDefaultGlyphBuf;
+ std::unique_ptr<uint8_t[]> glyph_buf(new uint8_t[glyph_buf_size]);
+
+ info->x_mins.resize(info->num_glyphs);
+ for (unsigned int i = 0; i < info->num_glyphs; ++i) {
+ size_t glyph_size = 0;
+ uint16_t n_contours = 0;
+ bool have_bbox = false;
+ if (bbox_bitmap[i >> 3] & (0x80 >> (i & 7))) {
+ have_bbox = true;
+ }
+ if (PREDICT_FALSE(!n_contour_stream.ReadU16(&n_contours))) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+
+ if (n_contours == 0xffff) {
+ // composite glyph
+ bool have_instructions = false;
+ unsigned int instruction_size = 0;
+ if (PREDICT_FALSE(!have_bbox)) {
+ // composite glyphs must have an explicit bbox
+ return FONT_COMPRESSION_FAILURE();
+ }
+
+ size_t composite_size;
+ if (PREDICT_FALSE(!SizeOfComposite(composite_stream, &composite_size,
+ &have_instructions))) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ if (have_instructions) {
+ if (PREDICT_FALSE(!Read255UShort(&glyph_stream, &instruction_size))) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ }
+
+ size_t size_needed = 12 + composite_size + instruction_size;
+ if (PREDICT_FALSE(glyph_buf_size < size_needed)) {
+ glyph_buf.reset(new uint8_t[size_needed]);
+ glyph_buf_size = size_needed;
+ }
+
+ glyph_size = Store16(glyph_buf.get(), glyph_size, n_contours);
+ if (PREDICT_FALSE(!bbox_stream.Read(glyph_buf.get() + glyph_size, 8))) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ glyph_size += 8;
+
+ if (PREDICT_FALSE(!composite_stream.Read(glyph_buf.get() + glyph_size,
+ composite_size))) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ glyph_size += composite_size;
+ if (have_instructions) {
+ glyph_size = Store16(glyph_buf.get(), glyph_size, instruction_size);
+ if (PREDICT_FALSE(!instruction_stream.Read(glyph_buf.get() + glyph_size,
+ instruction_size))) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ glyph_size += instruction_size;
+ }
+ } else if (n_contours > 0) {
+ // simple glyph
+ n_points_vec.clear();
+ unsigned int total_n_points = 0;
+ unsigned int n_points_contour;
+ for (unsigned int j = 0; j < n_contours; ++j) {
+ if (PREDICT_FALSE(
+ !Read255UShort(&n_points_stream, &n_points_contour))) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ n_points_vec.push_back(n_points_contour);
+ if (PREDICT_FALSE(total_n_points + n_points_contour < total_n_points)) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ total_n_points += n_points_contour;
+ }
+ unsigned int flag_size = total_n_points;
+ if (PREDICT_FALSE(
+ flag_size > flag_stream.length() - flag_stream.offset())) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ const uint8_t* flags_buf = flag_stream.buffer() + flag_stream.offset();
+ const uint8_t* triplet_buf = glyph_stream.buffer() +
+ glyph_stream.offset();
+ size_t triplet_size = glyph_stream.length() - glyph_stream.offset();
+ size_t triplet_bytes_consumed = 0;
+ if (points_size < total_n_points) {
+ points_size = total_n_points;
+ points.reset(new Point[points_size]);
+ }
+ if (PREDICT_FALSE(!TripletDecode(flags_buf, triplet_buf, triplet_size,
+ total_n_points, points.get(), &triplet_bytes_consumed))) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ if (PREDICT_FALSE(!flag_stream.Skip(flag_size))) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ if (PREDICT_FALSE(!glyph_stream.Skip(triplet_bytes_consumed))) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ unsigned int instruction_size;
+ if (PREDICT_FALSE(!Read255UShort(&glyph_stream, &instruction_size))) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+
+ if (PREDICT_FALSE(total_n_points >= (1 << 27)
+ || instruction_size >= (1 << 30))) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ size_t size_needed = 12 + 2 * n_contours + 5 * total_n_points
+ + instruction_size;
+ if (PREDICT_FALSE(glyph_buf_size < size_needed)) {
+ glyph_buf.reset(new uint8_t[size_needed]);
+ glyph_buf_size = size_needed;
+ }
+
+ glyph_size = Store16(glyph_buf.get(), glyph_size, n_contours);
+ if (have_bbox) {
+ if (PREDICT_FALSE(!bbox_stream.Read(glyph_buf.get() + glyph_size, 8))) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ } else {
+ ComputeBbox(total_n_points, points.get(), glyph_buf.get());
+ }
+ glyph_size = kEndPtsOfContoursOffset;
+ int end_point = -1;
+ for (unsigned int contour_ix = 0; contour_ix < n_contours; ++contour_ix) {
+ end_point += n_points_vec[contour_ix];
+ if (PREDICT_FALSE(end_point >= 65536)) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ glyph_size = Store16(glyph_buf.get(), glyph_size, end_point);
+ }
+
+ glyph_size = Store16(glyph_buf.get(), glyph_size, instruction_size);
+ if (PREDICT_FALSE(!instruction_stream.Read(glyph_buf.get() + glyph_size,
+ instruction_size))) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ glyph_size += instruction_size;
+
+ if (PREDICT_FALSE(!StorePoints(total_n_points, points.get(), n_contours,
+ instruction_size, glyph_buf.get(), glyph_buf_size, &glyph_size))) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ } else {
+ // n_contours == 0; empty glyph. Must NOT have a bbox.
+ if (PREDICT_FALSE(have_bbox)) {
+#ifdef FONT_COMPRESSION_BIN
+ fprintf(stderr, "Empty glyph has a bbox\n");
+#endif
+ return FONT_COMPRESSION_FAILURE();
+ }
+ }
+
+ loca_values[i] = out->Size() - glyf_start;
+ if (PREDICT_FALSE(!out->Write(glyph_buf.get(), glyph_size))) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+
+ // TODO(user) Old code aligned glyphs ... but do we actually need to?
+ if (PREDICT_FALSE(!Pad4(out))) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+
+ *glyf_checksum += ComputeULongSum(glyph_buf.get(), glyph_size);
+
+ // We may need x_min to reconstruct 'hmtx'
+ if (n_contours > 0) {
+ Buffer x_min_buf(glyph_buf.get() + 2, 2);
+ if (PREDICT_FALSE(!x_min_buf.ReadS16(&info->x_mins[i]))) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ }
+ }
+
+ // glyf_table dst_offset was set by ReconstructFont
+ glyf_table->dst_length = out->Size() - glyf_table->dst_offset;
+ loca_table->dst_offset = out->Size();
+ // loca[n] will be equal the length of the glyph data ('glyf') table
+ loca_values[info->num_glyphs] = glyf_table->dst_length;
+ if (PREDICT_FALSE(!StoreLoca(loca_values, info->index_format, loca_checksum,
+ out))) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ loca_table->dst_length = out->Size() - loca_table->dst_offset;
+
+ return true;
+}
+
+Table* FindTable(std::vector<Table*>* tables, uint32_t tag) {
+ for (Table* table : *tables) {
+ if (table->tag == tag) {
+ return table;
+ }
+ }
+ return NULL;
+}
+
+// Get numberOfHMetrics, https://www.microsoft.com/typography/otspec/hhea.htm
+bool ReadNumHMetrics(const uint8_t* data, size_t data_size,
+ uint16_t* num_hmetrics) {
+ // Skip 34 to reach 'hhea' numberOfHMetrics
+ Buffer buffer(data, data_size);
+ if (PREDICT_FALSE(!buffer.Skip(34) || !buffer.ReadU16(num_hmetrics))) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ return true;
+}
+
+// http://dev.w3.org/webfonts/WOFF2/spec/Overview.html#hmtx_table_format
+bool ReconstructTransformedHmtx(const uint8_t* transformed_buf,
+ size_t transformed_size,
+ uint16_t num_glyphs,
+ uint16_t num_hmetrics,
+ const std::vector<int16_t>& x_mins,
+ uint32_t* checksum,
+ WOFF2Out* out) {
+ Buffer hmtx_buff_in(transformed_buf, transformed_size);
+
+ uint8_t hmtx_flags;
+ if (PREDICT_FALSE(!hmtx_buff_in.ReadU8(&hmtx_flags))) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+
+ std::vector<uint16_t> advance_widths;
+ std::vector<int16_t> lsbs;
+ bool has_proportional_lsbs = (hmtx_flags & 1) == 0;
+ bool has_monospace_lsbs = (hmtx_flags & 2) == 0;
+
+ // Bits 2-7 are reserved and MUST be zero.
+ if ((hmtx_flags & 0xFC) != 0) {
+#ifdef FONT_COMPRESSION_BIN
+ fprintf(stderr, "Illegal hmtx flags; bits 2-7 must be 0\n");
+#endif
+ return FONT_COMPRESSION_FAILURE();
+ }
+
+ // you say you transformed but there is little evidence of it
+ if (has_proportional_lsbs && has_monospace_lsbs) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+
+ assert(x_mins.size() == num_glyphs);
+
+ // num_glyphs 0 is OK if there is no 'glyf' but cannot then xform 'hmtx'.
+ if (PREDICT_FALSE(num_hmetrics > num_glyphs)) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+
+ // https://www.microsoft.com/typography/otspec/hmtx.htm
+ // "...only one entry need be in the array, but that entry is required."
+ if (PREDICT_FALSE(num_hmetrics < 1)) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+
+ for (uint16_t i = 0; i < num_hmetrics; i++) {
+ uint16_t advance_width;
+ if (PREDICT_FALSE(!hmtx_buff_in.ReadU16(&advance_width))) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ advance_widths.push_back(advance_width);
+ }
+
+ for (uint16_t i = 0; i < num_hmetrics; i++) {
+ int16_t lsb;
+ if (has_proportional_lsbs) {
+ if (PREDICT_FALSE(!hmtx_buff_in.ReadS16(&lsb))) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ } else {
+ lsb = x_mins[i];
+ }
+ lsbs.push_back(lsb);
+ }
+
+ for (uint16_t i = num_hmetrics; i < num_glyphs; i++) {
+ int16_t lsb;
+ if (has_monospace_lsbs) {
+ if (PREDICT_FALSE(!hmtx_buff_in.ReadS16(&lsb))) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ } else {
+ lsb = x_mins[i];
+ }
+ lsbs.push_back(lsb);
+ }
+
+ // bake me a shiny new hmtx table
+ uint32_t hmtx_output_size = 2 * num_glyphs + 2 * num_hmetrics;
+ std::vector<uint8_t> hmtx_table(hmtx_output_size);
+ uint8_t* dst = &hmtx_table[0];
+ size_t dst_offset = 0;
+ for (uint32_t i = 0; i < num_glyphs; i++) {
+ if (i < num_hmetrics) {
+ Store16(advance_widths[i], &dst_offset, dst);
+ }
+ Store16(lsbs[i], &dst_offset, dst);
+ }
+
+ *checksum = ComputeULongSum(&hmtx_table[0], hmtx_output_size);
+ if (PREDICT_FALSE(!out->Write(&hmtx_table[0], hmtx_output_size))) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+
+ return true;
+}
+
+bool Woff2Uncompress(uint8_t* dst_buf, size_t dst_size,
+ const uint8_t* src_buf, size_t src_size) {
+ size_t uncompressed_size = dst_size;
+ BrotliDecoderResult result = BrotliDecoderDecompress(
+ src_size, src_buf, &uncompressed_size, dst_buf);
+ if (PREDICT_FALSE(result != BROTLI_DECODER_RESULT_SUCCESS ||
+ uncompressed_size != dst_size)) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ return true;
+}
+
+bool ReadTableDirectory(Buffer* file, std::vector<Table>* tables,
+ size_t num_tables) {
+ uint32_t src_offset = 0;
+ for (size_t i = 0; i < num_tables; ++i) {
+ Table* table = &(*tables)[i];
+ uint8_t flag_byte;
+ if (PREDICT_FALSE(!file->ReadU8(&flag_byte))) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ uint32_t tag;
+ if ((flag_byte & 0x3f) == 0x3f) {
+ if (PREDICT_FALSE(!file->ReadU32(&tag))) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ } else {
+ tag = kKnownTags[flag_byte & 0x3f];
+ }
+ uint32_t flags = 0;
+ uint8_t xform_version = (flag_byte >> 6) & 0x03;
+
+ // 0 means xform for glyph/loca, non-0 for others
+ if (tag == kGlyfTableTag || tag == kLocaTableTag) {
+ if (xform_version == 0) {
+ flags |= kWoff2FlagsTransform;
+ }
+ } else if (xform_version != 0) {
+ flags |= kWoff2FlagsTransform;
+ }
+ flags |= xform_version;
+
+ uint32_t dst_length;
+ if (PREDICT_FALSE(!ReadBase128(file, &dst_length))) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ uint32_t transform_length = dst_length;
+ if ((flags & kWoff2FlagsTransform) != 0) {
+ if (PREDICT_FALSE(!ReadBase128(file, &transform_length))) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ if (PREDICT_FALSE(tag == kLocaTableTag && transform_length)) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ }
+ if (PREDICT_FALSE(src_offset + transform_length < src_offset)) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ table->src_offset = src_offset;
+ table->src_length = transform_length;
+ src_offset += transform_length;
+
+ table->tag = tag;
+ table->flags = flags;
+ table->transform_length = transform_length;
+ table->dst_length = dst_length;
+ }
+ return true;
+}
+
+// Writes a single Offset Table entry
+size_t StoreOffsetTable(uint8_t* result, size_t offset, uint32_t flavor,
+ uint16_t num_tables) {
+ offset = StoreU32(result, offset, flavor); // sfnt version
+ offset = Store16(result, offset, num_tables); // num_tables
+ unsigned max_pow2 = 0;
+ while (1u << (max_pow2 + 1) <= num_tables) {
+ max_pow2++;
+ }
+ const uint16_t output_search_range = (1u << max_pow2) << 4;
+ offset = Store16(result, offset, output_search_range); // searchRange
+ offset = Store16(result, offset, max_pow2); // entrySelector
+ // rangeShift
+ offset = Store16(result, offset, (num_tables << 4) - output_search_range);
+ return offset;
+}
+
+size_t StoreTableEntry(uint8_t* result, uint32_t offset, uint32_t tag) {
+ offset = StoreU32(result, offset, tag);
+ offset = StoreU32(result, offset, 0);
+ offset = StoreU32(result, offset, 0);
+ offset = StoreU32(result, offset, 0);
+ return offset;
+}
+
+// First table goes after all the headers, table directory, etc
+uint64_t ComputeOffsetToFirstTable(const WOFF2Header& hdr) {
+ uint64_t offset = kSfntHeaderSize +
+ kSfntEntrySize * static_cast<uint64_t>(hdr.num_tables);
+ if (hdr.header_version) {
+ offset = CollectionHeaderSize(hdr.header_version, hdr.ttc_fonts.size())
+ + kSfntHeaderSize * hdr.ttc_fonts.size();
+ for (const auto& ttc_font : hdr.ttc_fonts) {
+ offset += kSfntEntrySize * ttc_font.table_indices.size();
+ }
+ }
+ return offset;
+}
+
+std::vector<Table*> Tables(WOFF2Header* hdr, size_t font_index) {
+ std::vector<Table*> tables;
+ if (PREDICT_FALSE(hdr->header_version)) {
+ for (auto index : hdr->ttc_fonts[font_index].table_indices) {
+ tables.push_back(&hdr->tables[index]);
+ }
+ } else {
+ for (auto& table : hdr->tables) {
+ tables.push_back(&table);
+ }
+ }
+ return tables;
+}
+
+// Offset tables assumed to have been written in with 0's initially.
+// WOFF2Header isn't const so we can use [] instead of at() (which upsets FF)
+bool ReconstructFont(uint8_t* transformed_buf,
+ const uint32_t transformed_buf_size,
+ RebuildMetadata* metadata,
+ WOFF2Header* hdr,
+ size_t font_index,
+ WOFF2Out* out) {
+ size_t dest_offset = out->Size();
+ uint8_t table_entry[12];
+ WOFF2FontInfo* info = &metadata->font_infos[font_index];
+ std::vector<Table*> tables = Tables(hdr, font_index);
+
+ // 'glyf' without 'loca' doesn't make sense
+ const Table* glyf_table = FindTable(&tables, kGlyfTableTag);
+ const Table* loca_table = FindTable(&tables, kLocaTableTag);
+ if (PREDICT_FALSE(static_cast<bool>(glyf_table) !=
+ static_cast<bool>(loca_table))) {
+#ifdef FONT_COMPRESSION_BIN
+ fprintf(stderr, "Cannot have just one of glyf/loca\n");
+#endif
+ return FONT_COMPRESSION_FAILURE();
+ }
+
+ if (glyf_table != NULL) {
+ if (PREDICT_FALSE((glyf_table->flags & kWoff2FlagsTransform)
+ != (loca_table->flags & kWoff2FlagsTransform))) {
+#ifdef FONT_COMPRESSION_BIN
+ fprintf(stderr, "Cannot transform just one of glyf/loca\n");
+#endif
+ return FONT_COMPRESSION_FAILURE();
+ }
+ }
+
+ uint32_t font_checksum = metadata->header_checksum;
+ if (hdr->header_version) {
+ font_checksum = hdr->ttc_fonts[font_index].header_checksum;
+ }
+
+ uint32_t loca_checksum = 0;
+ for (size_t i = 0; i < tables.size(); i++) {
+ Table& table = *tables[i];
+
+ std::pair<uint32_t, uint32_t> checksum_key = {table.tag, table.src_offset};
+ bool reused = metadata->checksums.find(checksum_key)
+ != metadata->checksums.end();
+ if (PREDICT_FALSE(font_index == 0 && reused)) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+
+ // TODO(user) a collection with optimized hmtx that reused glyf/loca
+ // would fail. We don't optimize hmtx for collections yet.
+ if (PREDICT_FALSE(static_cast<uint64_t>(table.src_offset) + table.src_length
+ > transformed_buf_size)) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+
+ if (table.tag == kHheaTableTag) {
+ if (!ReadNumHMetrics(transformed_buf + table.src_offset,
+ table.src_length, &info->num_hmetrics)) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ }
+
+ uint32_t checksum = 0;
+ if (!reused) {
+ if ((table.flags & kWoff2FlagsTransform) != kWoff2FlagsTransform) {
+ if (table.tag == kHeadTableTag) {
+ if (PREDICT_FALSE(table.src_length < 12)) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ // checkSumAdjustment = 0
+ StoreU32(transformed_buf + table.src_offset, 8, 0);
+ }
+ table.dst_offset = dest_offset;
+ checksum = ComputeULongSum(transformed_buf + table.src_offset,
+ table.src_length);
+ if (PREDICT_FALSE(!out->Write(transformed_buf + table.src_offset,
+ table.src_length))) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ } else {
+ if (table.tag == kGlyfTableTag) {
+ table.dst_offset = dest_offset;
+
+ Table* loca_table = FindTable(&tables, kLocaTableTag);
+ if (PREDICT_FALSE(!ReconstructGlyf(transformed_buf + table.src_offset,
+ &table, &checksum, loca_table, &loca_checksum, info, out))) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ } else if (table.tag == kLocaTableTag) {
+ // All the work was done by ReconstructGlyf. We already know checksum.
+ checksum = loca_checksum;
+ } else if (table.tag == kHmtxTableTag) {
+ table.dst_offset = dest_offset;
+ // Tables are sorted so all the info we need has been gathered.
+ if (PREDICT_FALSE(!ReconstructTransformedHmtx(
+ transformed_buf + table.src_offset, table.src_length,
+ info->num_glyphs, info->num_hmetrics, info->x_mins, &checksum,
+ out))) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ } else {
+ return FONT_COMPRESSION_FAILURE(); // transform unknown
+ }
+ }
+ metadata->checksums[checksum_key] = checksum;
+ } else {
+ checksum = metadata->checksums[checksum_key];
+ }
+ font_checksum += checksum;
+
+ // update the table entry with real values.
+ StoreU32(table_entry, 0, checksum);
+ StoreU32(table_entry, 4, table.dst_offset);
+ StoreU32(table_entry, 8, table.dst_length);
+ if (PREDICT_FALSE(!out->Write(table_entry,
+ info->table_entry_by_tag[table.tag] + 4, 12))) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+
+ // We replaced 0's. Update overall checksum.
+ font_checksum += ComputeULongSum(table_entry, 12);
+
+ if (PREDICT_FALSE(!Pad4(out))) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+
+ if (PREDICT_FALSE(static_cast<uint64_t>(table.dst_offset + table.dst_length)
+ > out->Size())) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ dest_offset = out->Size();
+ }
+
+ // Update 'head' checkSumAdjustment. We already set it to 0 and summed font.
+ Table* head_table = FindTable(&tables, kHeadTableTag);
+ if (head_table) {
+ if (PREDICT_FALSE(head_table->dst_length < 12)) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ uint8_t checksum_adjustment[4];
+ StoreU32(checksum_adjustment, 0, 0xB1B0AFBA - font_checksum);
+ if (PREDICT_FALSE(!out->Write(checksum_adjustment,
+ head_table->dst_offset + 8, 4))) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ }
+
+ return true;
+}
+
+bool ReadWOFF2Header(const uint8_t* data, size_t length, WOFF2Header* hdr) {
+ Buffer file(data, length);
+
+ uint32_t signature;
+ if (PREDICT_FALSE(!file.ReadU32(&signature) || signature != kWoff2Signature ||
+ !file.ReadU32(&hdr->flavor))) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+
+ // TODO(user): Should call IsValidVersionTag() here.
+
+ uint32_t reported_length;
+ if (PREDICT_FALSE(
+ !file.ReadU32(&reported_length) || length != reported_length)) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ if (PREDICT_FALSE(!file.ReadU16(&hdr->num_tables) || !hdr->num_tables)) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+
+ // We don't care about these fields of the header:
+ // uint16_t reserved
+ // uint32_t total_sfnt_size, we don't believe this, will compute later
+ if (PREDICT_FALSE(!file.Skip(6))) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ if (PREDICT_FALSE(!file.ReadU32(&hdr->compressed_length))) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ // We don't care about these fields of the header:
+ // uint16_t major_version, minor_version
+ if (PREDICT_FALSE(!file.Skip(2 * 2))) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ uint32_t meta_offset;
+ uint32_t meta_length;
+ uint32_t meta_length_orig;
+ if (PREDICT_FALSE(!file.ReadU32(&meta_offset) ||
+ !file.ReadU32(&meta_length) ||
+ !file.ReadU32(&meta_length_orig))) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ if (meta_offset) {
+ if (PREDICT_FALSE(
+ meta_offset >= length || length - meta_offset < meta_length)) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ }
+ uint32_t priv_offset;
+ uint32_t priv_length;
+ if (PREDICT_FALSE(!file.ReadU32(&priv_offset) ||
+ !file.ReadU32(&priv_length))) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ if (priv_offset) {
+ if (PREDICT_FALSE(
+ priv_offset >= length || length - priv_offset < priv_length)) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ }
+ hdr->tables.resize(hdr->num_tables);
+ if (PREDICT_FALSE(!ReadTableDirectory(
+ &file, &hdr->tables, hdr->num_tables))) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+
+ // Before we sort for output the last table end is the uncompressed size.
+ Table& last_table = hdr->tables.back();
+ hdr->uncompressed_size = last_table.src_offset + last_table.src_length;
+ if (PREDICT_FALSE(hdr->uncompressed_size < last_table.src_offset)) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+
+ hdr->header_version = 0;
+
+ if (hdr->flavor == kTtcFontFlavor) {
+ if (PREDICT_FALSE(!file.ReadU32(&hdr->header_version))) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ if (PREDICT_FALSE(hdr->header_version != 0x00010000
+ && hdr->header_version != 0x00020000)) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ uint32_t num_fonts;
+ if (PREDICT_FALSE(!Read255UShort(&file, &num_fonts) || !num_fonts)) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ hdr->ttc_fonts.resize(num_fonts);
+
+ for (uint32_t i = 0; i < num_fonts; i++) {
+ TtcFont& ttc_font = hdr->ttc_fonts[i];
+ uint32_t num_tables;
+ if (PREDICT_FALSE(!Read255UShort(&file, &num_tables) || !num_tables)) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ if (PREDICT_FALSE(!file.ReadU32(&ttc_font.flavor))) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+
+ ttc_font.table_indices.resize(num_tables);
+
+
+ unsigned int glyf_idx = 0;
+ unsigned int loca_idx = 0;
+
+ for (uint32_t j = 0; j < num_tables; j++) {
+ unsigned int table_idx;
+ if (PREDICT_FALSE(!Read255UShort(&file, &table_idx)) ||
+ table_idx >= hdr->tables.size()) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ ttc_font.table_indices[j] = table_idx;
+
+ const Table& table = hdr->tables[table_idx];
+ if (table.tag == kLocaTableTag) {
+ loca_idx = table_idx;
+ }
+ if (table.tag == kGlyfTableTag) {
+ glyf_idx = table_idx;
+ }
+
+ }
+
+ // if we have both glyf and loca make sure they are consecutive
+ // if we have just one we'll reject the font elsewhere
+ if (glyf_idx > 0 || loca_idx > 0) {
+ if (PREDICT_FALSE(glyf_idx > loca_idx || loca_idx - glyf_idx != 1)) {
+#ifdef FONT_COMPRESSION_BIN
+ fprintf(stderr, "TTC font %d has non-consecutive glyf/loca\n", i);
+#endif
+ return FONT_COMPRESSION_FAILURE();
+ }
+ }
+ }
+ }
+
+ const uint64_t first_table_offset = ComputeOffsetToFirstTable(*hdr);
+
+ hdr->compressed_offset = file.offset();
+ if (PREDICT_FALSE(hdr->compressed_offset >
+ std::numeric_limits<uint32_t>::max())) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ uint64_t src_offset = Round4(hdr->compressed_offset + hdr->compressed_length);
+ uint64_t dst_offset = first_table_offset;
+
+
+ if (PREDICT_FALSE(src_offset > length)) {
+#ifdef FONT_COMPRESSION_BIN
+ fprintf(stderr, "offset fail; src_offset %" PRIu64 " length %lu "
+ "dst_offset %" PRIu64 "\n",
+ src_offset, length, dst_offset);
+#endif
+ return FONT_COMPRESSION_FAILURE();
+ }
+ if (meta_offset) {
+ if (PREDICT_FALSE(src_offset != meta_offset)) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ src_offset = Round4(meta_offset + meta_length);
+ if (PREDICT_FALSE(src_offset > std::numeric_limits<uint32_t>::max())) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ }
+
+ if (priv_offset) {
+ if (PREDICT_FALSE(src_offset != priv_offset)) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ src_offset = Round4(priv_offset + priv_length);
+ if (PREDICT_FALSE(src_offset > std::numeric_limits<uint32_t>::max())) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ }
+
+ if (PREDICT_FALSE(src_offset != Round4(length))) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+
+ return true;
+}
+
+// Write everything before the actual table data
+bool WriteHeaders(const uint8_t* data, size_t length, RebuildMetadata* metadata,
+ WOFF2Header* hdr, WOFF2Out* out) {
+ std::vector<uint8_t> output(ComputeOffsetToFirstTable(*hdr), 0);
+
+ // Re-order tables in output (OTSpec) order
+ std::vector<Table> sorted_tables(hdr->tables);
+ if (hdr->header_version) {
+ // collection; we have to sort the table offset vector in each font
+ for (auto& ttc_font : hdr->ttc_fonts) {
+ std::map<uint32_t, uint16_t> sorted_index_by_tag;
+ for (auto table_index : ttc_font.table_indices) {
+ sorted_index_by_tag[hdr->tables[table_index].tag] = table_index;
+ }
+ uint16_t index = 0;
+ for (auto& i : sorted_index_by_tag) {
+ ttc_font.table_indices[index++] = i.second;
+ }
+ }
+ } else {
+ // non-collection; we can just sort the tables
+ std::sort(sorted_tables.begin(), sorted_tables.end());
+ }
+
+ // Start building the font
+ uint8_t* result = &output[0];
+ size_t offset = 0;
+ if (hdr->header_version) {
+ // TTC header
+ offset = StoreU32(result, offset, hdr->flavor); // TAG TTCTag
+ offset = StoreU32(result, offset, hdr->header_version); // FIXED Version
+ offset = StoreU32(result, offset, hdr->ttc_fonts.size()); // ULONG numFonts
+ // Space for ULONG OffsetTable[numFonts] (zeroed initially)
+ size_t offset_table = offset; // keep start of offset table for later
+ for (size_t i = 0; i < hdr->ttc_fonts.size(); i++) {
+ offset = StoreU32(result, offset, 0); // will fill real values in later
+ }
+ // space for DSIG fields for header v2
+ if (hdr->header_version == 0x00020000) {
+ offset = StoreU32(result, offset, 0); // ULONG ulDsigTag
+ offset = StoreU32(result, offset, 0); // ULONG ulDsigLength
+ offset = StoreU32(result, offset, 0); // ULONG ulDsigOffset
+ }
+
+ // write Offset Tables and store the location of each in TTC Header
+ metadata->font_infos.resize(hdr->ttc_fonts.size());
+ for (size_t i = 0; i < hdr->ttc_fonts.size(); i++) {
+ TtcFont& ttc_font = hdr->ttc_fonts[i];
+
+ // write Offset Table location into TTC Header
+ offset_table = StoreU32(result, offset_table, offset);
+
+ // write the actual offset table so our header doesn't lie
+ ttc_font.dst_offset = offset;
+ offset = StoreOffsetTable(result, offset, ttc_font.flavor,
+ ttc_font.table_indices.size());
+
+ for (const auto table_index : ttc_font.table_indices) {
+ uint32_t tag = hdr->tables[table_index].tag;
+ metadata->font_infos[i].table_entry_by_tag[tag] = offset;
+ offset = StoreTableEntry(result, offset, tag);
+ }
+
+ ttc_font.header_checksum = ComputeULongSum(&output[ttc_font.dst_offset],
+ offset - ttc_font.dst_offset);
+ }
+ } else {
+ metadata->font_infos.resize(1);
+ offset = StoreOffsetTable(result, offset, hdr->flavor, hdr->num_tables);
+ for (uint16_t i = 0; i < hdr->num_tables; ++i) {
+ metadata->font_infos[0].table_entry_by_tag[sorted_tables[i].tag] = offset;
+ offset = StoreTableEntry(result, offset, sorted_tables[i].tag);
+ }
+ }
+
+ if (PREDICT_FALSE(!out->Write(&output[0], output.size()))) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ metadata->header_checksum = ComputeULongSum(&output[0], output.size());
+ return true;
+}
+
+} // namespace
+
+size_t ComputeWOFF2FinalSize(const uint8_t* data, size_t length) {
+ Buffer file(data, length);
+ uint32_t total_length;
+
+ if (!file.Skip(16) ||
+ !file.ReadU32(&total_length)) {
+ return 0;
+ }
+ return total_length;
+}
+
+bool ConvertWOFF2ToTTF(uint8_t *result, size_t result_length,
+ const uint8_t *data, size_t length) {
+ WOFF2MemoryOut out(result, result_length);
+ return ConvertWOFF2ToTTF(data, length, &out);
+}
+
+bool ConvertWOFF2ToTTF(const uint8_t* data, size_t length,
+ WOFF2Out* out) {
+ RebuildMetadata metadata;
+ WOFF2Header hdr;
+ if (!ReadWOFF2Header(data, length, &hdr)) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+
+ if (!WriteHeaders(data, length, &metadata, &hdr, out)) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+
+ const float compression_ratio = (float) hdr.uncompressed_size / length;
+ if (compression_ratio > kMaxPlausibleCompressionRatio) {
+#ifdef FONT_COMPRESSION_BIN
+ fprintf(stderr, "Implausible compression ratio %.01f\n", compression_ratio);
+#endif
+ return FONT_COMPRESSION_FAILURE();
+ }
+
+ const uint8_t* src_buf = data + hdr.compressed_offset;
+ std::vector<uint8_t> uncompressed_buf(hdr.uncompressed_size);
+ if (PREDICT_FALSE(hdr.uncompressed_size < 1)) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ if (PREDICT_FALSE(!Woff2Uncompress(&uncompressed_buf[0],
+ hdr.uncompressed_size, src_buf,
+ hdr.compressed_length))) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+
+ for (size_t i = 0; i < metadata.font_infos.size(); i++) {
+ if (PREDICT_FALSE(!ReconstructFont(&uncompressed_buf[0],
+ hdr.uncompressed_size,
+ &metadata, &hdr, i, out))) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ }
+
+ return true;
+}
+
+} // namespace woff2
diff -up webkitgtk-2.20.0/Source/ThirdParty/woff2/src/woff2_decompress.cc.remove_woff2 webkitgtk-2.20.0/Source/ThirdParty/woff2/src/woff2_decompress.cc
--- webkitgtk-2.20.0/Source/ThirdParty/woff2/src/woff2_decompress.cc.remove_woff2 2018-03-12 14:34:12.503957746 +0100
+++ webkitgtk-2.20.0/Source/ThirdParty/woff2/src/woff2_decompress.cc 2018-03-12 14:34:12.503957746 +0100
@@ -0,0 +1,41 @@
+/* Copyright 2013 Google Inc. All Rights Reserved.
+
+ Distributed under MIT license.
+ See file LICENSE for detail or copy at https://opensource.org/licenses/MIT
+*/
+
+/* A very simple commandline tool for decompressing woff2 format files to true
+ type font files. */
+
+#include <string>
+
+#include "./file.h"
+#include <woff2/decode.h>
+
+
+int main(int argc, char **argv) {
+ using std::string;
+
+ if (argc != 2) {
+ fprintf(stderr, "One argument, the input filename, must be provided.\n");
+ return 1;
+ }
+
+ string filename(argv[1]);
+ string outfilename = filename.substr(0, filename.find_last_of(".")) + ".ttf";
+
+ // Note: update woff2_dec_fuzzer_new_entry.cc if this pattern changes.
+ string input = woff2::GetFileContent(filename);
+ const uint8_t* raw_input = reinterpret_cast<const uint8_t*>(input.data());
+ string output(std::min(woff2::ComputeWOFF2FinalSize(raw_input, input.size()),
+ woff2::kDefaultMaxSize), 0);
+ woff2::WOFF2StringOut out(&output);
+
+ const bool ok = woff2::ConvertWOFF2ToTTF(raw_input, input.size(), &out);
+
+ if (ok) {
+ woff2::SetFileContents(outfilename, output.begin(),
+ output.begin() + out.Size());
+ }
+ return ok ? 0 : 1;
+}
diff -up webkitgtk-2.20.0/Source/ThirdParty/woff2/src/woff2_enc.cc.remove_woff2 webkitgtk-2.20.0/Source/ThirdParty/woff2/src/woff2_enc.cc
--- webkitgtk-2.20.0/Source/ThirdParty/woff2/src/woff2_enc.cc.remove_woff2 2018-03-12 14:34:12.503957746 +0100
+++ webkitgtk-2.20.0/Source/ThirdParty/woff2/src/woff2_enc.cc 2018-03-12 14:34:12.503957746 +0100
@@ -0,0 +1,462 @@
+/* Copyright 2014 Google Inc. All Rights Reserved.
+
+ Distributed under MIT license.
+ See file LICENSE for detail or copy at https://opensource.org/licenses/MIT
+*/
+
+/* Library for converting TTF format font files to their WOFF2 versions. */
+
+#include <woff2/encode.h>
+
+#include <stdlib.h>
+#include <complex>
+#include <cstring>
+#include <limits>
+#include <string>
+#include <vector>
+
+#include <brotli/encode.h>
+#include "./buffer.h"
+#include "./font.h"
+#include "./normalize.h"
+#include "./round.h"
+#include "./store_bytes.h"
+#include "./table_tags.h"
+#include "./transform.h"
+#include "./variable_length.h"
+#include "./woff2_common.h"
+
+namespace woff2 {
+
+namespace {
+
+
+using std::string;
+using std::vector;
+
+
+const size_t kWoff2HeaderSize = 48;
+const size_t kWoff2EntrySize = 20;
+
+bool Compress(const uint8_t* data, const size_t len, uint8_t* result,
+ uint32_t* result_len, BrotliEncoderMode mode, int quality) {
+ size_t compressed_len = *result_len;
+ if (BrotliEncoderCompress(quality, BROTLI_DEFAULT_WINDOW, mode, len, data,
+ &compressed_len, result) == 0) {
+ return false;
+ }
+ *result_len = compressed_len;
+ return true;
+}
+
+bool Woff2Compress(const uint8_t* data, const size_t len,
+ uint8_t* result, uint32_t* result_len,
+ int quality) {
+ return Compress(data, len, result, result_len,
+ BROTLI_MODE_FONT, quality);
+}
+
+bool TextCompress(const uint8_t* data, const size_t len,
+ uint8_t* result, uint32_t* result_len,
+ int quality) {
+ return Compress(data, len, result, result_len,
+ BROTLI_MODE_TEXT, quality);
+}
+
+int KnownTableIndex(uint32_t tag) {
+ for (int i = 0; i < 63; ++i) {
+ if (tag == kKnownTags[i]) return i;
+ }
+ return 63;
+}
+
+void StoreTableEntry(const Table& table, size_t* offset, uint8_t* dst) {
+ uint8_t flag_byte = (table.flags & 0xC0) | KnownTableIndex(table.tag);
+ dst[(*offset)++] = flag_byte;
+ // The index here is treated as a set of flag bytes because
+ // bits 6 and 7 of the byte are reserved for future use as flags.
+ // 0x3f or 63 means an arbitrary table tag.
+ if ((flag_byte & 0x3f) == 0x3f) {
+ StoreU32(table.tag, offset, dst);
+ }
+ StoreBase128(table.src_length, offset, dst);
+ if ((table.flags & kWoff2FlagsTransform) != 0) {
+ StoreBase128(table.transform_length, offset, dst);
+ }
+}
+
+size_t TableEntrySize(const Table& table) {
+ uint8_t flag_byte = KnownTableIndex(table.tag);
+ size_t size = ((flag_byte & 0x3f) != 0x3f) ? 1 : 5;
+ size += Base128Size(table.src_length);
+ if ((table.flags & kWoff2FlagsTransform) != 0) {
+ size += Base128Size(table.transform_length);
+ }
+ return size;
+}
+
+size_t ComputeWoff2Length(const FontCollection& font_collection,
+ const std::vector<Table>& tables,
+ std::map<std::pair<uint32_t, uint32_t>, uint16_t>
+ index_by_tag_offset,
+ size_t compressed_data_length,
+ size_t extended_metadata_length) {
+ size_t size = kWoff2HeaderSize;
+
+ for (const auto& table : tables) {
+ size += TableEntrySize(table);
+ }
+
+ // for collections only, collection tables
+ if (font_collection.flavor == kTtcFontFlavor) {
+ size += 4; // UInt32 Version of TTC Header
+ size += Size255UShort(font_collection.fonts.size()); // 255UInt16 numFonts
+
+ size += 4 * font_collection.fonts.size(); // UInt32 flavor for each
+
+ for (const auto& font : font_collection.fonts) {
+ size += Size255UShort(font.tables.size()); // 255UInt16 numTables
+ for (const auto& entry : font.tables) {
+ const Font::Table& table = entry.second;
+ // no collection entry for xform table
+ if (table.tag & 0x80808080) continue;
+
+ std::pair<uint32_t, uint32_t> tag_offset(table.tag, table.offset);
+ uint16_t table_index = index_by_tag_offset[tag_offset];
+ size += Size255UShort(table_index); // 255UInt16 index entry
+ }
+ }
+ }
+
+ // compressed data
+ size += compressed_data_length;
+ size = Round4(size);
+
+ size += extended_metadata_length;
+ return size;
+}
+
+size_t ComputeUncompressedLength(const Font& font) {
+ // sfnt header + offset table
+ size_t size = 12 + 16 * font.num_tables;
+ for (const auto& entry : font.tables) {
+ const Font::Table& table = entry.second;
+ if (table.tag & 0x80808080) continue; // xform tables don't stay
+ if (table.IsReused()) continue; // don't have to pay twice
+ size += Round4(table.length);
+ }
+ return size;
+}
+
+size_t ComputeUncompressedLength(const FontCollection& font_collection) {
+ if (font_collection.flavor != kTtcFontFlavor) {
+ return ComputeUncompressedLength(font_collection.fonts[0]);
+ }
+ size_t size = CollectionHeaderSize(font_collection.header_version,
+ font_collection.fonts.size());
+ for (const auto& font : font_collection.fonts) {
+ size += ComputeUncompressedLength(font);
+ }
+ return size;
+}
+
+size_t ComputeTotalTransformLength(const Font& font) {
+ size_t total = 0;
+ for (const auto& i : font.tables) {
+ const Font::Table& table = i.second;
+ if (table.IsReused()) {
+ continue;
+ }
+ if (table.tag & 0x80808080 || !font.FindTable(table.tag ^ 0x80808080)) {
+ // Count transformed tables and non-transformed tables that do not have
+ // transformed versions.
+ total += table.length;
+ }
+ }
+ return total;
+}
+
+} // namespace
+
+size_t MaxWOFF2CompressedSize(const uint8_t* data, size_t length) {
+ return MaxWOFF2CompressedSize(data, length, "");
+}
+
+size_t MaxWOFF2CompressedSize(const uint8_t* data, size_t length,
+ const string& extended_metadata) {
+ // Except for the header size, which is 32 bytes larger in woff2 format,
+ // all other parts should be smaller (table header in short format,
+ // transformations and compression). Just to be sure, we will give some
+ // headroom anyway.
+ return length + 1024 + extended_metadata.length();
+}
+
+uint32_t CompressedBufferSize(uint32_t original_size) {
+ return 1.2 * original_size + 10240;
+}
+
+bool TransformFontCollection(FontCollection* font_collection) {
+ for (auto& font : font_collection->fonts) {
+ if (!TransformGlyfAndLocaTables(&font)) {
+#ifdef FONT_COMPRESSION_BIN
+ fprintf(stderr, "glyf/loca transformation failed.\n");
+#endif
+ return FONT_COMPRESSION_FAILURE();
+ }
+ }
+
+ return true;
+}
+
+bool ConvertTTFToWOFF2(const uint8_t *data, size_t length,
+ uint8_t *result, size_t *result_length) {
+ WOFF2Params params;
+ return ConvertTTFToWOFF2(data, length, result, result_length,
+ params);
+}
+
+bool ConvertTTFToWOFF2(const uint8_t *data, size_t length,
+ uint8_t *result, size_t *result_length,
+ const WOFF2Params& params) {
+ FontCollection font_collection;
+ if (!ReadFontCollection(data, length, &font_collection)) {
+#ifdef FONT_COMPRESSION_BIN
+ fprintf(stderr, "Parsing of the input font failed.\n");
+#endif
+ return FONT_COMPRESSION_FAILURE();
+ }
+
+ if (!NormalizeFontCollection(&font_collection)) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+
+ if (params.allow_transforms && !TransformFontCollection(&font_collection)) {
+ return FONT_COMPRESSION_FAILURE();
+ } else {
+ // glyf/loca use 11 to flag "not transformed"
+ for (auto& font : font_collection.fonts) {
+ Font::Table* glyf_table = font.FindTable(kGlyfTableTag);
+ Font::Table* loca_table = font.FindTable(kLocaTableTag);
+ if (glyf_table) {
+ glyf_table->flag_byte |= 0xc0;
+ }
+ if (loca_table) {
+ loca_table->flag_byte |= 0xc0;
+ }
+ }
+ }
+
+ // Although the compressed size of each table in the final woff2 file won't
+ // be larger than its transform_length, we have to allocate a large enough
+ // buffer for the compressor, since the compressor can potentially increase
+ // the size. If the compressor overflows this, it should return false and
+ // then this function will also return false.
+
+ size_t total_transform_length = 0;
+ for (const auto& font : font_collection.fonts) {
+ total_transform_length += ComputeTotalTransformLength(font);
+ }
+ size_t compression_buffer_size = CompressedBufferSize(total_transform_length);
+ std::vector<uint8_t> compression_buf(compression_buffer_size);
+ uint32_t total_compressed_length = compression_buffer_size;
+
+ // Collect all transformed data into one place in output order.
+ std::vector<uint8_t> transform_buf(total_transform_length);
+ size_t transform_offset = 0;
+ for (const auto& font : font_collection.fonts) {
+ for (const auto tag : font.OutputOrderedTags()) {
+ const Font::Table& original = font.tables.at(tag);
+ if (original.IsReused()) continue;
+ if (tag & 0x80808080) continue;
+ const Font::Table* table_to_store = font.FindTable(tag ^ 0x80808080);
+ if (table_to_store == NULL) table_to_store = &original;
+
+ StoreBytes(table_to_store->data, table_to_store->length,
+ &transform_offset, &transform_buf[0]);
+ }
+ }
+
+ // Compress all transformed data in one stream.
+ if (!Woff2Compress(transform_buf.data(), total_transform_length,
+ &compression_buf[0],
+ &total_compressed_length,
+ params.brotli_quality)) {
+#ifdef FONT_COMPRESSION_BIN
+ fprintf(stderr, "Compression of combined table failed.\n");
+#endif
+ return FONT_COMPRESSION_FAILURE();
+ }
+
+#ifdef FONT_COMPRESSION_BIN
+ fprintf(stderr, "Compressed %zu to %u.\n", total_transform_length,
+ total_compressed_length);
+#endif
+
+ // Compress the extended metadata
+ // TODO(user): how does this apply to collections
+ uint32_t compressed_metadata_buf_length =
+ CompressedBufferSize(params.extended_metadata.length());
+ std::vector<uint8_t> compressed_metadata_buf(compressed_metadata_buf_length);
+
+ if (params.extended_metadata.length() > 0) {
+ if (!TextCompress((const uint8_t*)params.extended_metadata.data(),
+ params.extended_metadata.length(),
+ compressed_metadata_buf.data(),
+ &compressed_metadata_buf_length,
+ params.brotli_quality)) {
+#ifdef FONT_COMPRESSION_BIN
+ fprintf(stderr, "Compression of extended metadata failed.\n");
+#endif
+ return FONT_COMPRESSION_FAILURE();
+ }
+ } else {
+ compressed_metadata_buf_length = 0;
+ }
+
+ std::vector<Table> tables;
+ std::map<std::pair<uint32_t, uint32_t>, uint16_t> index_by_tag_offset;
+
+ for (const auto& font : font_collection.fonts) {
+
+ for (const auto tag : font.OutputOrderedTags()) {
+ const Font::Table& src_table = font.tables.at(tag);
+ if (src_table.IsReused()) {
+ continue;
+ }
+
+ std::pair<uint32_t, uint32_t> tag_offset(src_table.tag, src_table.offset);
+ if (index_by_tag_offset.find(tag_offset) == index_by_tag_offset.end()) {
+ index_by_tag_offset[tag_offset] = tables.size();
+ } else {
+ return false;
+ }
+
+ Table table;
+ table.tag = src_table.tag;
+ table.flags = src_table.flag_byte;
+ table.src_length = src_table.length;
+ table.transform_length = src_table.length;
+ const uint8_t* transformed_data = src_table.data;
+ const Font::Table* transformed_table =
+ font.FindTable(src_table.tag ^ 0x80808080);
+ if (transformed_table != NULL) {
+ table.flags = transformed_table->flag_byte;
+ table.flags |= kWoff2FlagsTransform;
+ table.transform_length = transformed_table->length;
+ transformed_data = transformed_table->data;
+
+ }
+ tables.push_back(table);
+ }
+ }
+
+ size_t woff2_length = ComputeWoff2Length(font_collection, tables,
+ index_by_tag_offset, total_compressed_length,
+ compressed_metadata_buf_length);
+ if (woff2_length > *result_length) {
+#ifdef FONT_COMPRESSION_BIN
+ fprintf(stderr, "Result allocation was too small (%zd vs %zd bytes).\n",
+ *result_length, woff2_length);
+#endif
+ return FONT_COMPRESSION_FAILURE();
+ }
+ *result_length = woff2_length;
+
+ size_t offset = 0;
+
+ // start of woff2 header (http://www.w3.org/TR/WOFF2/#woff20Header)
+ StoreU32(kWoff2Signature, &offset, result);
+ if (font_collection.flavor != kTtcFontFlavor) {
+ StoreU32(font_collection.fonts[0].flavor, &offset, result);
+ } else {
+ StoreU32(kTtcFontFlavor, &offset, result);
+ }
+ StoreU32(woff2_length, &offset, result);
+ Store16(tables.size(), &offset, result);
+ Store16(0, &offset, result); // reserved
+ // totalSfntSize
+ StoreU32(ComputeUncompressedLength(font_collection), &offset, result);
+ StoreU32(total_compressed_length, &offset, result); // totalCompressedSize
+
+ // Let's just all be v1.0
+ Store16(1, &offset, result); // majorVersion
+ Store16(0, &offset, result); // minorVersion
+ if (compressed_metadata_buf_length > 0) {
+ StoreU32(woff2_length - compressed_metadata_buf_length,
+ &offset, result); // metaOffset
+ StoreU32(compressed_metadata_buf_length, &offset, result); // metaLength
+ StoreU32(params.extended_metadata.length(),
+ &offset, result); // metaOrigLength
+ } else {
+ StoreU32(0, &offset, result); // metaOffset
+ StoreU32(0, &offset, result); // metaLength
+ StoreU32(0, &offset, result); // metaOrigLength
+ }
+ StoreU32(0, &offset, result); // privOffset
+ StoreU32(0, &offset, result); // privLength
+ // end of woff2 header
+
+ // table directory (http://www.w3.org/TR/WOFF2/#table_dir_format)
+ for (const auto& table : tables) {
+ StoreTableEntry(table, &offset, result);
+ }
+
+ // for collections only, collection table directory
+ if (font_collection.flavor == kTtcFontFlavor) {
+ StoreU32(font_collection.header_version, &offset, result);
+ Store255UShort(font_collection.fonts.size(), &offset, result);
+ for (const Font& font : font_collection.fonts) {
+
+ uint16_t num_tables = 0;
+ for (const auto& entry : font.tables) {
+ const Font::Table& table = entry.second;
+ if (table.tag & 0x80808080) continue; // don't write xform tables
+ num_tables++;
+ }
+ Store255UShort(num_tables, &offset, result);
+
+ StoreU32(font.flavor, &offset, result);
+ for (const auto& entry : font.tables) {
+ const Font::Table& table = entry.second;
+ if (table.tag & 0x80808080) continue; // don't write xform tables
+
+ // for reused tables, only the original has an updated offset
+ uint32_t table_offset =
+ table.IsReused() ? table.reuse_of->offset : table.offset;
+ uint32_t table_length =
+ table.IsReused() ? table.reuse_of->length : table.length;
+ std::pair<uint32_t, uint32_t> tag_offset(table.tag, table_offset);
+ if (index_by_tag_offset.find(tag_offset) == index_by_tag_offset.end()) {
+#ifdef FONT_COMPRESSION_BIN
+fprintf(stderr, "Missing table index for offset 0x%08x\n",
+ table_offset);
+#endif
+ return FONT_COMPRESSION_FAILURE();
+ }
+ uint16_t index = index_by_tag_offset[tag_offset];
+ Store255UShort(index, &offset, result);
+
+ }
+
+ }
+ }
+
+ // compressed data format (http://www.w3.org/TR/WOFF2/#table_format)
+
+ StoreBytes(&compression_buf[0], total_compressed_length, &offset, result);
+ offset = Round4(offset);
+
+ StoreBytes(compressed_metadata_buf.data(), compressed_metadata_buf_length,
+ &offset, result);
+
+ if (*result_length != offset) {
+#ifdef FONT_COMPRESSION_BIN
+ fprintf(stderr, "Mismatch between computed and actual length "
+ "(%zd vs %zd)\n", *result_length, offset);
+#endif
+ return FONT_COMPRESSION_FAILURE();
+ }
+ return true;
+}
+
+} // namespace woff2
diff -up webkitgtk-2.20.0/Source/ThirdParty/woff2/src/woff2_info.cc.remove_woff2 webkitgtk-2.20.0/Source/ThirdParty/woff2/src/woff2_info.cc
--- webkitgtk-2.20.0/Source/ThirdParty/woff2/src/woff2_info.cc.remove_woff2 2018-03-12 14:34:12.504957738 +0100
+++ webkitgtk-2.20.0/Source/ThirdParty/woff2/src/woff2_info.cc 2018-03-12 14:34:12.504957738 +0100
@@ -0,0 +1,144 @@
+/* Copyright 2014 Google Inc. All Rights Reserved.
+
+ Distributed under MIT license.
+ See file LICENSE for detail or copy at https://opensource.org/licenses/MIT
+*/
+
+/* A commandline tool for dumping info about a woff2 file. */
+
+#include <string>
+
+#include "file.h"
+#include "./woff2_common.h"
+#include "./buffer.h"
+#include "./font.h"
+#include "./table_tags.h"
+#include "./variable_length.h"
+
+std::string PrintTag(int tag) {
+ if (tag & 0x80808080) {
+ return std::string("_xfm"); // print _xfm for xform tables (else garbage)
+ }
+ char printable[] = {
+ static_cast<char>((tag >> 24) & 0xFF),
+ static_cast<char>((tag >> 16) & 0xFF),
+ static_cast<char>((tag >> 8) & 0xFF),
+ static_cast<char>(tag & 0xFF)
+ };
+ return std::string(printable, 4);
+}
+
+int main(int argc, char **argv) {
+ using std::string;
+
+ if (argc != 2) {
+ fprintf(stderr, "One argument, the input filename, must be provided.\n");
+ return 1;
+ }
+
+ string filename(argv[1]);
+ string outfilename = filename.substr(0, filename.find_last_of(".")) + ".woff2";
+ fprintf(stdout, "Processing %s => %s\n",
+ filename.c_str(), outfilename.c_str());
+ string input = woff2::GetFileContent(filename);
+
+ woff2::Buffer file(reinterpret_cast<const uint8_t*>(input.data()),
+ input.size());
+
+ printf("WOFF2Header\n");
+ uint32_t signature, flavor, length, totalSfntSize, totalCompressedSize;
+ uint32_t metaOffset, metaLength, metaOrigLength, privOffset, privLength;
+ uint16_t num_tables, reserved, major, minor;
+ if (!file.ReadU32(&signature)) return 1;
+ if (!file.ReadU32(&flavor)) return 1;
+ if (!file.ReadU32(&length)) return 1;
+ if (!file.ReadU16(&num_tables)) return 1;
+ if (!file.ReadU16(&reserved)) return 1;
+ if (!file.ReadU32(&totalSfntSize)) return 1;
+ if (!file.ReadU32(&totalCompressedSize)) return 1;
+ if (!file.ReadU16(&major)) return 1;
+ if (!file.ReadU16(&minor)) return 1;
+ if (!file.ReadU32(&metaOffset)) return 1;
+ if (!file.ReadU32(&metaLength)) return 1;
+ if (!file.ReadU32(&metaOrigLength)) return 1;
+ if (!file.ReadU32(&privOffset)) return 1;
+ if (!file.ReadU32(&privLength)) return 1;
+
+ if (signature != 0x774F4632) {
+ printf("Invalid signature: %08x\n", signature);
+ return 1;
+ }
+ printf("signature 0x%08x\n", signature);
+ printf("flavor 0x%08x\n", flavor);
+ printf("length %d\n", length);
+ printf("numTables %d\n", num_tables);
+ printf("reserved %d\n", reserved);
+ printf("totalSfntSize %d\n", totalSfntSize);
+ printf("totalCompressedSize %d\n", totalCompressedSize);
+ printf("majorVersion %d\n", major);
+ printf("minorVersion %d\n", minor);
+ printf("metaOffset %d\n", metaOffset);
+ printf("metaLength %d\n", metaLength);
+ printf("metaOrigLength %d\n", metaOrigLength);
+ printf("privOffset %d\n", privOffset);
+ printf("privLength %d\n", privLength);
+
+ std::vector<uint32_t> table_tags;
+ printf("TableDirectory starts at +%zu\n", file.offset());
+ printf("Entry offset flags tag origLength txLength\n");
+ for (auto i = 0; i < num_tables; i++) {
+ size_t offset = file.offset();
+ uint8_t flags;
+ uint32_t tag, origLength, transformLength;
+ if (!file.ReadU8(&flags)) return 1;
+ if ((flags & 0x3f) == 0x3f) {
+ if (!file.ReadU32(&tag)) return 1;
+ } else {
+ tag = woff2::kKnownTags[flags & 0x3f];
+ }
+ table_tags.push_back(tag);
+ if (!ReadBase128(&file, &origLength)) return 1;
+
+ printf("%5d %6zu 0x%02x %s %10d", i, offset, flags,
+ PrintTag(tag).c_str(), origLength);
+
+ uint8_t xform_version = (flags >> 6) & 0x3;
+ if (tag == woff2::kGlyfTableTag || tag == woff2::kLocaTableTag) {
+ if (xform_version == 0) {
+ if (!ReadBase128(&file, &transformLength)) return 1;
+ printf(" %8d", transformLength);
+ }
+ } else if (xform_version > 0) {
+ if (!ReadBase128(&file, &transformLength)) return 1;
+ printf(" %8d", transformLength);
+ }
+ printf("\n");
+ }
+
+ // Collection header
+ if (flavor == woff2::kTtcFontFlavor) {
+ uint32_t version, numFonts;
+ if (!file.ReadU32(&version)) return 1;
+ if (!woff2::Read255UShort(&file, &numFonts)) return 1;
+ printf("CollectionHeader 0x%08x %d fonts\n", version, numFonts);
+
+ for (auto i = 0; i < numFonts; i++) {
+ uint32_t numTables, flavor;
+ if (!woff2::Read255UShort(&file, &numTables)) return 1;
+ if (!file.ReadU32(&flavor)) return 1;
+ printf("CollectionFontEntry %d flavor 0x%08x %d tables\n", i, flavor,
+ numTables);
+ for (auto j = 0; j < numTables; j++) {
+ uint32_t table_idx;
+ if (!woff2::Read255UShort(&file, &table_idx)) return 1;
+ if (table_idx >= table_tags.size()) return 1;
+ printf(" %d %s (idx %d)\n", j,
+ PrintTag(table_tags[table_idx]).c_str(), table_idx);
+ }
+ }
+ }
+
+ printf("TableDirectory ends at +%zu\n", file.offset());
+
+ return 0;
+}
diff -up webkitgtk-2.20.0/Source/ThirdParty/woff2/src/woff2_out.cc.remove_woff2 webkitgtk-2.20.0/Source/ThirdParty/woff2/src/woff2_out.cc
--- webkitgtk-2.20.0/Source/ThirdParty/woff2/src/woff2_out.cc.remove_woff2 2018-03-12 14:34:12.504957738 +0100
+++ webkitgtk-2.20.0/Source/ThirdParty/woff2/src/woff2_out.cc 2018-03-12 14:34:12.504957738 +0100
@@ -0,0 +1,67 @@
+/* Copyright 2014 Google Inc. All Rights Reserved.
+
+ Distributed under MIT license.
+ See file LICENSE for detail or copy at https://opensource.org/licenses/MIT
+*/
+
+/* Output buffer for WOFF2 decompression. */
+
+#include <woff2/output.h>
+
+using std::string;
+
+namespace woff2 {
+
+WOFF2StringOut::WOFF2StringOut(string* buf)
+ : buf_(buf),
+ max_size_(kDefaultMaxSize),
+ offset_(0) {}
+
+bool WOFF2StringOut::Write(const void *buf, size_t n) {
+ return Write(buf, offset_, n);
+}
+
+bool WOFF2StringOut::Write(const void *buf, size_t offset, size_t n) {
+ if (offset > max_size_ || n > max_size_ - offset) {
+ return false;
+ }
+ if (offset == buf_->size()) {
+ buf_->append(static_cast<const char*>(buf), n);
+ } else {
+ if (offset + n > buf_->size()) {
+ buf_->append(offset + n - buf_->size(), 0);
+ }
+ buf_->replace(offset, n, static_cast<const char*>(buf), n);
+ }
+ offset_ = std::max(offset_, offset + n);
+
+ return true;
+}
+
+void WOFF2StringOut::SetMaxSize(size_t max_size) {
+ max_size_ = max_size;
+ if (offset_ > max_size_) {
+ offset_ = max_size_;
+ }
+}
+
+WOFF2MemoryOut::WOFF2MemoryOut(uint8_t* buf, size_t buf_size)
+ : buf_(buf),
+ buf_size_(buf_size),
+ offset_(0) {}
+
+bool WOFF2MemoryOut::Write(const void *buf, size_t n) {
+ return Write(buf, offset_, n);
+}
+
+bool WOFF2MemoryOut::Write(const void *buf, size_t offset, size_t n) {
+ if (offset > buf_size_ || n > buf_size_ - offset) {
+ return false;
+ }
+ std::memcpy(buf_ + offset, buf, n);
+ offset_ = std::max(offset_, offset + n);
+
+ return true;
+}
+
+} // namespace woff2
diff -up webkitgtk-2.20.0/Source/ThirdParty/woff2/update.sh.remove_woff2 webkitgtk-2.20.0/Source/ThirdParty/woff2/update.sh
--- webkitgtk-2.20.0/Source/ThirdParty/woff2/update.sh.remove_woff2 2018-03-12 14:34:12.504957738 +0100
+++ webkitgtk-2.20.0/Source/ThirdParty/woff2/update.sh 2018-03-12 14:34:12.504957738 +0100
@@ -0,0 +1,21 @@
+#!/bin/sh
+
+# Script to update the webkit in-tree copy of the woff2 library.
+# Run this within the /Source/ThirdParty/woff2 directory of the source tree.
+
+MY_TEMP_DIR=`mktemp -d -t woff2_update.XXXXXX` || exit 1
+
+git clone https://github.com/google/woff2 ${MY_TEMP_DIR}/woff2
+
+COMMIT=`(cd ${MY_TEMP_DIR}/woff2 && git log | head -n 1)`
+perl -p -i -e "s/\[commit [0-9a-f]{40}\]/[${COMMIT}]/" README.webkit;
+
+rm -rf src include
+mv ${MY_TEMP_DIR}/woff2/src src
+mv ${MY_TEMP_DIR}/woff2/include include
+rm -rf ${MY_TEMP_DIR}
+
+echo "###"
+echo "### Updated woff2/src to $COMMIT."
+echo "### Remember to verify and commit the changes to source control!"
+echo "###"
diff -up webkitgtk-2.20.0/Source/WebCore/CMakeLists.txt.remove_woff2 webkitgtk-2.20.0/Source/WebCore/CMakeLists.txt
--- webkitgtk-2.20.0/Source/WebCore/CMakeLists.txt.remove_woff2 2018-03-12 14:34:12.505957731 +0100
+++ webkitgtk-2.20.0/Source/WebCore/CMakeLists.txt 2018-03-12 14:37:06.196717195 +0100
@@ -1528,8 +1528,8 @@ if (USE_OPENVR)
endif ()
if (USE_WOFF2)
- list(APPEND WebCore_PRIVATE_INCLUDE_DIRECTORIES "${WOFF2DEC_INCLUDE_DIRS}")
- list(APPEND WebCore_LIBRARIES "${WOFF2DEC_LIBRARIES}")
+ list(APPEND WebCore_PRIVATE_INCLUDE_DIRECTORIES "${THIRDPARTY_DIR}/woff2/include")
+ list(APPEND WebCore_LIBRARIES woff2)
endif ()
if (USE_XDGMIME)