- 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]);