char type[20];
void *buf;
unsigned long size;
+ int opt;
- if (argc != 3 || get_sha1_hex(argv[2], sha1))
- usage("cat-file: cat-file [-t | tagname] <sha1>");
- buf = read_sha1_file(sha1, type, &size);
- if (!buf) {
- fprintf(stderr, "cat-file %s: bad file\n", argv[2]);
- exit(1);
+ setup_git_directory();
+ if (argc != 3 || get_sha1(argv[2], sha1))
+ usage("git-cat-file [-t|-s|-e|<type>] <sha1>");
+
+ opt = 0;
+ if ( argv[1][0] == '-' ) {
+ opt = argv[1][1];
+ if ( !opt || argv[1][2] )
+ opt = -1; /* Not a single character option */
}
- if (!strcmp("-t", argv[1])) {
- buf = type;
- size = strlen(type);
- type[size] = '\n';
- size++;
- } else if (strcmp(type, argv[1])) {
- fprintf(stderr, "cat-file %s: bad tag\n", argv[2]);
- exit(1); /* bad tag */
+
+ buf = NULL;
+ switch (opt) {
+ case 't':
+ if (!sha1_object_info(sha1, type, NULL)) {
+ printf("%s\n", type);
+ return 0;
+ }
+ break;
+
+ case 's':
+ if (!sha1_object_info(sha1, type, &size)) {
+ printf("%lu\n", size);
+ return 0;
+ }
+ break;
+
+ case 'e':
+ return !has_sha1_file(sha1);
+
+ case 0:
+ buf = read_object_with_reference(sha1, argv[1], &size, NULL);
+ break;
+
+ default:
+ die("git-cat-file: unknown option: %s\n", argv[1]);
}
+ if (!buf)
+ die("git-cat-file %s: bad file", argv[2]);
+
while (size > 0) {
- long ret = write(1, buf, size);
+ long ret = xwrite(1, buf, size);
if (ret < 0) {
- if (errno == EAGAIN)
- continue;
/* Ignore epipe */
if (errno == EPIPE)
break;
- fprintf(stderr, "cat-file: %s\n", strerror(errno));
- exit(1);
- }
- if (!ret) {
- fprintf(stderr, "cat-file: disk full?");
- exit(1);
+ die("git-cat-file: %s", strerror(errno));
+ } else if (!ret) {
+ die("git-cat-file: disk full?");
}
size -= ret;
buf += ret;