X-Git-Url: https://asedeno.scripts.mit.edu/gitweb/?a=blobdiff_plain;f=builtin-mktree.c;h=098395fda1932674e29f8d2cb332c722a6cb275f;hb=e4d1afbcf2e39a997ae90befd629ee53e444c4c9;hp=5ff04753b756a72c521d6a95321417812e90e865;hpb=e01662bb5da721d65226f4b173858ea3bf0bde30;p=git.git

diff --git a/builtin-mktree.c b/builtin-mktree.c
index 5ff04753b..098395fda 100644
--- a/builtin-mktree.c
+++ b/builtin-mktree.c
@@ -63,7 +63,7 @@ static void write_tree(unsigned char *sha1)
 }
 
 static const char *mktree_usage[] = {
-	"git mktree [-z] [--missing]",
+	"git mktree [-z] [--missing] [--batch]",
 	NULL
 };
 
@@ -71,7 +71,8 @@ static void mktree_line(char *buf, size_t len, int line_termination, int allow_m
 {
 	char *ptr, *ntr;
 	unsigned mode;
-	enum object_type type;
+	enum object_type mode_type; /* object type derived from mode */
+	enum object_type obj_type; /* object type derived from sha */
 	char *path;
 	unsigned char sha1[20];
 
@@ -94,17 +95,8 @@ static void mktree_line(char *buf, size_t len, int line_termination, int allow_m
 	if (S_ISGITLINK(mode))
 		allow_missing = 1;
 
-	if (!allow_missing)
-		type = sha1_object_info(sha1, NULL);
-	else
-		type = object_type(mode);
-
-	if (type < 0)
-		die("object %s unavailable", sha1_to_hex(sha1));
 
 	*ntr++ = 0; /* now at the beginning of SHA1 */
-	if (type != type_from_string(ptr))
-		die("object type %s mismatch (%s)", ptr, typename(type));
 
 	path = ntr + 41;  /* at the beginning of name */
 	if (line_termination && path[0] == '"') {
@@ -113,6 +105,37 @@ static void mktree_line(char *buf, size_t len, int line_termination, int allow_m
 			die("invalid quoting");
 		path = strbuf_detach(&p_uq, NULL);
 	}
+
+	/*
+	 * Object type is redundantly derivable three ways.
+	 * These should all agree.
+	 */
+	mode_type = object_type(mode);
+	if (mode_type != type_from_string(ptr)) {
+		die("entry '%s' object type (%s) doesn't match mode type (%s)",
+			path, ptr, typename(mode_type));
+	}
+
+	/* Check the type of object identified by sha1 */
+	obj_type = sha1_object_info(sha1, NULL);
+	if (obj_type < 0) {
+		if (allow_missing) {
+			; /* no problem - missing objects are presumed to be of the right type */
+		} else {
+			die("entry '%s' object %s is unavailable", path, sha1_to_hex(sha1));
+		}
+	} else {
+		if (obj_type != mode_type) {
+			/*
+			 * The object exists but is of the wrong type.
+			 * This is a problem regardless of allow_missing
+			 * because the new tree entry will never be correct.
+			 */
+			die("entry '%s' object %s is a %s but specified type was (%s)",
+				path, sha1_to_hex(sha1), typename(obj_type), typename(mode_type));
+		}
+	}
+
 	append_to_tree(mode, sha1, path);
 }
 
@@ -122,20 +145,46 @@ int cmd_mktree(int ac, const char **av, const char *prefix)
 	unsigned char sha1[20];
 	int line_termination = '\n';
 	int allow_missing = 0;
+	int is_batch_mode = 0;
+	int got_eof = 0;
+
 	const struct option option[] = {
 		OPT_SET_INT('z', NULL, &line_termination, "input is NUL terminated", '\0'),
 		OPT_SET_INT( 0 , "missing", &allow_missing, "allow missing objects", 1),
+		OPT_SET_INT( 0 , "batch", &is_batch_mode, "allow creation of more than one tree", 1),
 		OPT_END()
 	};
 
-	ac = parse_options(ac, av, option, mktree_usage, 0);
-
-	while (strbuf_getline(&sb, stdin, line_termination) != EOF)
-		mktree_line(sb.buf, sb.len, line_termination, allow_missing);
-
+	ac = parse_options(ac, av, prefix, option, mktree_usage, 0);
+
+	while (!got_eof) {
+		while (1) {
+			if (strbuf_getline(&sb, stdin, line_termination) == EOF) {
+				got_eof = 1;
+				break;
+			}
+			if (sb.buf[0] == '\0') {
+				/* empty lines denote tree boundaries in batch mode */
+				if (is_batch_mode)
+					break;
+				die("input format error: (blank line only valid in batch mode)");
+			}
+			mktree_line(sb.buf, sb.len, line_termination, allow_missing);
+		}
+		if (is_batch_mode && got_eof && used < 1) {
+			/*
+			 * Execution gets here if the last tree entry is terminated with a
+			 * new-line.  The final new-line has been made optional to be
+			 * consistent with the original non-batch behaviour of mktree.
+			 */
+			; /* skip creating an empty tree */
+		} else {
+			write_tree(sha1);
+			puts(sha1_to_hex(sha1));
+			fflush(stdout);
+		}
+		used=0; /* reset tree entry buffer for re-use in batch mode */
+	}
 	strbuf_release(&sb);
-
-	write_tree(sha1);
-	puts(sha1_to_hex(sha1));
 	exit(0);
 }