From 1b22b6c897efa8aec6eeb51f72a73d507d5e336f Mon Sep 17 00:00:00 2001 From: Michael Lukashov Date: Tue, 16 Feb 2010 23:42:54 +0000 Subject: [PATCH] refactor duplicated encode_header in pack-objects and fast-import The following function is duplicated: encode_header Move this function to sha1_file.c and rename it 'encode_in_pack_object_header', as suggested by Junio C Hamano Signed-off-by: Michael Lukashov Signed-off-by: Junio C Hamano --- builtin-pack-objects.c | 31 ++----------------------------- cache.h | 8 ++++++++ fast-import.c | 29 +++-------------------------- sha1_file.c | 20 ++++++++++++++++++++ 4 files changed, 33 insertions(+), 55 deletions(-) diff --git a/builtin-pack-objects.c b/builtin-pack-objects.c index e1d3adf405..6b2f65c6db 100644 --- a/builtin-pack-objects.c +++ b/builtin-pack-objects.c @@ -154,33 +154,6 @@ static unsigned long do_compress(void **pptr, unsigned long size) return stream.total_out; } -/* - * The per-object header is a pretty dense thing, which is - * - first byte: low four bits are "size", then three bits of "type", - * and the high bit is "size continues". - * - each byte afterwards: low seven bits are size continuation, - * with the high bit being "size continues" - */ -static int encode_header(enum object_type type, unsigned long size, unsigned char *hdr) -{ - int n = 1; - unsigned char c; - - if (type < OBJ_COMMIT || type > OBJ_REF_DELTA) - die("bad type %d", type); - - c = (type << 4) | (size & 15); - size >>= 4; - while (size) { - *hdr++ = c | 0x80; - c = size & 0x7f; - size >>= 7; - n++; - } - *hdr = c; - return n; -} - /* * we are going to reuse the existing object data as is. make * sure it is not corrupt. @@ -321,7 +294,7 @@ static unsigned long write_object(struct sha1file *f, * The object header is a byte of 'type' followed by zero or * more bytes of length. */ - hdrlen = encode_header(type, size, header); + hdrlen = encode_in_pack_object_header(type, size, header); if (type == OBJ_OFS_DELTA) { /* @@ -372,7 +345,7 @@ static unsigned long write_object(struct sha1file *f, if (entry->delta) type = (allow_ofs_delta && entry->delta->idx.offset) ? OBJ_OFS_DELTA : OBJ_REF_DELTA; - hdrlen = encode_header(type, entry->size, header); + hdrlen = encode_in_pack_object_header(type, entry->size, header); offset = entry->in_pack_offset; revidx = find_pack_revindex(p, offset); diff --git a/cache.h b/cache.h index d478eff1f3..2654b608ba 100644 --- a/cache.h +++ b/cache.h @@ -911,6 +911,14 @@ extern void *unpack_entry(struct packed_git *, off_t, enum object_type *, unsign extern unsigned long unpack_object_header_buffer(const unsigned char *buf, unsigned long len, enum object_type *type, unsigned long *sizep); extern unsigned long get_size_from_delta(struct packed_git *, struct pack_window **, off_t); extern const char *packed_object_info_detail(struct packed_git *, off_t, unsigned long *, unsigned long *, unsigned int *, unsigned char *); +/* + * The per-object header is a pretty dense thing, which is + * - first byte: low four bits are "size", then three bits of "type", + * and the high bit is "size continues". + * - each byte afterwards: low seven bits are size continuation, + * with the high bit being "size continues" + */ +int encode_in_pack_object_header(enum object_type type, uintmax_t size, unsigned char *hdr); /* Dumb servers support */ extern int update_server_info(int); diff --git a/fast-import.c b/fast-import.c index 74f08bd554..309f2c58a2 100644 --- a/fast-import.c +++ b/fast-import.c @@ -980,29 +980,6 @@ static void cycle_packfile(void) start_packfile(); } -static size_t encode_header( - enum object_type type, - uintmax_t size, - unsigned char *hdr) -{ - int n = 1; - unsigned char c; - - if (type < OBJ_COMMIT || type > OBJ_REF_DELTA) - die("bad type %d", type); - - c = (type << 4) | (size & 15); - size >>= 4; - while (size) { - *hdr++ = c | 0x80; - c = size & 0x7f; - size >>= 7; - n++; - } - *hdr = c; - return n; -} - static int store_object( enum object_type type, struct strbuf *dat, @@ -1103,7 +1080,7 @@ static int store_object( delta_count_by_type[type]++; e->depth = last->depth + 1; - hdrlen = encode_header(OBJ_OFS_DELTA, deltalen, hdr); + hdrlen = encode_in_pack_object_header(OBJ_OFS_DELTA, deltalen, hdr); sha1write(pack_file, hdr, hdrlen); pack_size += hdrlen; @@ -1114,7 +1091,7 @@ static int store_object( pack_size += sizeof(hdr) - pos; } else { e->depth = 0; - hdrlen = encode_header(type, dat->len, hdr); + hdrlen = encode_in_pack_object_header(type, dat->len, hdr); sha1write(pack_file, hdr, hdrlen); pack_size += hdrlen; } @@ -1188,7 +1165,7 @@ static void stream_blob(uintmax_t len, unsigned char *sha1out, uintmax_t mark) memset(&s, 0, sizeof(s)); deflateInit(&s, pack_compression_level); - hdrlen = encode_header(OBJ_BLOB, len, out_buf); + hdrlen = encode_in_pack_object_header(OBJ_BLOB, len, out_buf); if (out_sz <= hdrlen) die("impossibly large object header"); diff --git a/sha1_file.c b/sha1_file.c index 657825e14e..f3c9823c56 100644 --- a/sha1_file.c +++ b/sha1_file.c @@ -1475,6 +1475,26 @@ const char *packed_object_info_detail(struct packed_git *p, } } +int encode_in_pack_object_header(enum object_type type, uintmax_t size, unsigned char *hdr) +{ + int n = 1; + unsigned char c; + + if (type < OBJ_COMMIT || type > OBJ_REF_DELTA) + die("bad type %d", type); + + c = (type << 4) | (size & 15); + size >>= 4; + while (size) { + *hdr++ = c | 0x80; + c = size & 0x7f; + size >>= 7; + n++; + } + *hdr = c; + return n; +} + static int packed_object_info(struct packed_git *p, off_t obj_offset, unsigned long *sizep) {