/* * test-delta.c: test code to exercise diff-delta.c and patch-delta.c * * (C) 2005 Nicolas Pitre * * This code is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 as * published by the Free Software Foundation. */ #include "test-tool.h" #include "git-compat-util.h" #include "delta.h" #include "strbuf.h" static const char usage_str[] = "test-tool delta (-d|-p) "; int cmd__delta(int argc, const char **argv) { int fd; struct strbuf from = STRBUF_INIT, data = STRBUF_INIT; char *out_buf; unsigned long out_size; if (argc != 5 || (strcmp(argv[1], "-d") && strcmp(argv[1], "-p"))) usage(usage_str); if (strbuf_read_file(&from, argv[2], 0) < 0) die_errno("unable to read '%s'", argv[2]); if (strbuf_read_file(&data, argv[3], 0) < 0) die_errno("unable to read '%s'", argv[3]); if (argv[1][1] == 'd') out_buf = diff_delta(from.buf, from.len, data.buf, data.len, &out_size, 0); else out_buf = patch_delta(from.buf, from.len, data.buf, data.len, &out_size); if (!out_buf) die("delta operation failed (returned NULL)"); fd = xopen(argv[4], O_WRONLY|O_CREAT|O_TRUNC, 0666); if (write_in_full(fd, out_buf, out_size) < 0) die_errno("write(%s)", argv[4]); if (close(fd) < 0) die_errno("close(%s)", argv[4]); strbuf_release(&from); strbuf_release(&data); free(out_buf); return 0; }