| /* |
| * test-delta.c: test code to exercise diff-delta.c and patch-delta.c |
| * |
| * (C) 2005 Nicolas Pitre <nico@fluxnic.net> |
| * |
| * 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" |
| |
| static const char usage_str[] = |
| "test-tool delta (-d|-p) <from_file> <data_file> <out_file>"; |
| |
| int cmd__delta(int argc, const char **argv) |
| { |
| int fd; |
| struct stat st; |
| void *from_buf = NULL, *data_buf = NULL, *out_buf = NULL; |
| unsigned long from_size, data_size, out_size; |
| int ret = 1; |
| |
| if (argc != 5 || (strcmp(argv[1], "-d") && strcmp(argv[1], "-p"))) { |
| fprintf(stderr, "usage: %s\n", usage_str); |
| return 1; |
| } |
| |
| fd = open(argv[2], O_RDONLY); |
| if (fd < 0 || fstat(fd, &st)) { |
| perror(argv[2]); |
| return 1; |
| } |
| from_size = st.st_size; |
| from_buf = xmalloc(from_size); |
| if (read_in_full(fd, from_buf, from_size) < 0) { |
| perror(argv[2]); |
| close(fd); |
| goto cleanup; |
| } |
| close(fd); |
| |
| fd = open(argv[3], O_RDONLY); |
| if (fd < 0 || fstat(fd, &st)) { |
| perror(argv[3]); |
| goto cleanup; |
| } |
| data_size = st.st_size; |
| data_buf = xmalloc(data_size); |
| if (read_in_full(fd, data_buf, data_size) < 0) { |
| perror(argv[3]); |
| close(fd); |
| goto cleanup; |
| } |
| close(fd); |
| |
| if (argv[1][1] == 'd') |
| out_buf = diff_delta(from_buf, from_size, |
| data_buf, data_size, |
| &out_size, 0); |
| else |
| out_buf = patch_delta(from_buf, from_size, |
| data_buf, data_size, |
| &out_size); |
| if (!out_buf) { |
| fprintf(stderr, "delta operation failed (returned NULL)\n"); |
| goto cleanup; |
| } |
| |
| fd = open (argv[4], O_WRONLY|O_CREAT|O_TRUNC, 0666); |
| if (fd < 0 || write_in_full(fd, out_buf, out_size) < 0) { |
| perror(argv[4]); |
| goto cleanup; |
| } |
| |
| ret = 0; |
| cleanup: |
| free(from_buf); |
| free(data_buf); |
| free(out_buf); |
| |
| return ret; |
| } |