int cmd__sha1(int ac, const char **av)
{
- git_SHA_CTX ctx;
- unsigned char sha1[20];
- unsigned bufsz = 8192;
- int binary = 0;
- char *buffer;
-
- if (ac == 2) {
- if (!strcmp(av[1], "-b"))
- binary = 1;
- else
- bufsz = strtoul(av[1], NULL, 10) * 1024 * 1024;
- }
-
- if (!bufsz)
- bufsz = 8192;
-
- while ((buffer = malloc(bufsz)) == NULL) {
- fprintf(stderr, "bufsz %u is too big, halving...\n", bufsz);
- bufsz /= 2;
- if (bufsz < 1024)
- die("OOPS");
- }
-
- git_SHA1_Init(&ctx);
-
- while (1) {
- ssize_t sz, this_sz;
- char *cp = buffer;
- unsigned room = bufsz;
- this_sz = 0;
- while (room) {
- sz = xread(0, cp, room);
- if (sz == 0)
- break;
- if (sz < 0)
- die_errno("test-sha1");
- this_sz += sz;
- cp += sz;
- room -= sz;
- }
- if (this_sz == 0)
- break;
- git_SHA1_Update(&ctx, buffer, this_sz);
- }
- git_SHA1_Final(sha1, &ctx);
-
- if (binary)
- fwrite(sha1, 1, 20, stdout);
- else
- puts(sha1_to_hex(sha1));
- exit(0);
+ return cmd_hash_impl(ac, av, GIT_HASH_SHA1);
}