X-Git-Url: https://git.octo.it/?a=blobdiff_plain;f=cat-file.c;h=96d66b43043ee1e2381bfb80bb2bc1c7063ecc38;hb=1e80e0449248edb77b0fb9853f4a3404a599e207;hp=85a5d4caedec271f6c5e71ec3d7337b33447f581;hpb=62bb99606d0377fc14f206cbdf95acb57149d87a;p=git.git

diff --git a/cat-file.c b/cat-file.c
index 85a5d4ca..96d66b43 100644
--- a/cat-file.c
+++ b/cat-file.c
@@ -11,35 +11,52 @@ int main(int argc, char **argv)
 	char type[20];
 	void *buf;
 	unsigned long size;
+	int opt;
 
+	setup_git_directory();
 	if (argc != 3 || get_sha1(argv[2], sha1))
-		usage("git-cat-file [-t | -s | tagname] <sha1>");
+		usage("git-cat-file [-t|-s|-e|<type>] <sha1>");
 
-	if (!strcmp("-t", argv[1]) || !strcmp("-s", argv[1])) {
+	opt = 0;
+	if ( argv[1][0] == '-' ) {
+		opt = argv[1][1];
+		if ( !opt || argv[1][2] )
+			opt = -1; /* Not a single character option */
+	}
+
+	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)) {
-			switch (argv[1][1]) {
-			case 't':
-				printf("%s\n", type);
-				break;
-			case 's':
-				printf("%lu\n", size);
-				break;
-			}
+			printf("%lu\n", size);
 			return 0;
 		}
-		buf = NULL;
-	} else {
+		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;