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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 14:47:53 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 14:47:53 +0000 |
commit | c8bae7493d2f2910b57f13ded012e86bdcfb0532 (patch) | |
tree | 24e09d9f84dec336720cf393e156089ca2835791 /t/helper/test-delta.c | |
parent | Initial commit. (diff) | |
download | git-17a789943131483bc454986d1be6da6caaabce8c.tar.xz git-17a789943131483bc454986d1be6da6caaabce8c.zip |
Adding upstream version 1:2.39.2.upstream/1%2.39.2upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 't/helper/test-delta.c')
-rw-r--r-- | t/helper/test-delta.c | 86 |
1 files changed, 86 insertions, 0 deletions
diff --git a/t/helper/test-delta.c b/t/helper/test-delta.c new file mode 100644 index 0000000..b15481e --- /dev/null +++ b/t/helper/test-delta.c @@ -0,0 +1,86 @@ +/* + * 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" +#include "cache.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; +} |