X-Git-Url: https://git.tokkee.org/?a=blobdiff_plain;f=tree-diff.c;h=c8275823d0eb976e95b256f2bce5497f45d5da77;hb=9e64d109f905afb225f48409c4e0e068b2203332;hp=1cdf8aa90850441d60553281a1928047563fe8a6;hpb=0a8f4f0020cb35095005852c0797f0b90e9ebb74;p=git.git

diff --git a/tree-diff.c b/tree-diff.c
index 1cdf8aa90..c8275823d 100644
--- a/tree-diff.c
+++ b/tree-diff.c
@@ -15,7 +15,8 @@ static char *malloc_base(const char *base, const char *path, int pathlen)
 	return newbase;
 }
 
-static int show_entry(struct diff_options *opt, const char *prefix, struct tree_desc *desc, const char *base);
+static void show_entry(struct diff_options *opt, const char *prefix, struct tree_desc *desc,
+		       const char *base);
 
 static int compare_tree_entry(struct tree_desc *t1, struct tree_desc *t2, const char *base, struct diff_options *opt)
 {
@@ -38,8 +39,7 @@ static int compare_tree_entry(struct tree_desc *t1, struct tree_desc *t2, const
 		show_entry(opt, "+", t2, base);
 		return 1;
 	}
-	if (!opt->find_copies_harder &&
-	    !memcmp(sha1, sha2, 20) && mode1 == mode2)
+	if (!opt->find_copies_harder && !hashcmp(sha1, sha2) && mode1 == mode2)
 		return 0;
 
 	/*
@@ -131,20 +131,21 @@ static void show_tree(struct diff_options *opt, const char *prefix, struct tree_
 }
 
 /* A file entry went away or appeared */
-static int show_entry(struct diff_options *opt, const char *prefix, struct tree_desc *desc, const char *base)
+static void show_entry(struct diff_options *opt, const char *prefix, struct tree_desc *desc,
+		       const char *base)
 {
 	unsigned mode;
 	const char *path;
 	const unsigned char *sha1 = tree_entry_extract(desc, &path, &mode);
 
 	if (opt->recursive && S_ISDIR(mode)) {
-		char type[20];
+		enum object_type type;
 		char *newbase = malloc_base(base, path, strlen(path));
 		struct tree_desc inner;
 		void *tree;
 
-		tree = read_sha1_file(sha1, type, &inner.size);
-		if (!tree || strcmp(type, tree_type))
+		tree = read_sha1_file(sha1, &type, &inner.size);
+		if (!tree || type != OBJ_TREE)
 			die("corrupt tree sha %s", sha1_to_hex(sha1));
 
 		inner.buf = tree;
@@ -152,11 +153,9 @@ static int show_entry(struct diff_options *opt, const char *prefix, struct tree_
 
 		free(tree);
 		free(newbase);
-		return 0;
+	} else {
+		opt->add_remove(opt, prefix[0], mode, sha1, base, path);
 	}
-
-	opt->add_remove(opt, prefix[0], mode, sha1, base, path);
-	return 0;
 }
 
 int diff_tree(struct tree_desc *t1, struct tree_desc *t2, const char *base, struct diff_options *opt)
@@ -216,6 +215,24 @@ int diff_tree_sha1(const unsigned char *old, const unsigned char *new, const cha
 	return retval;
 }
 
+int diff_root_tree_sha1(const unsigned char *new, const char *base, struct diff_options *opt)
+{
+	int retval;
+	void *tree;
+	struct tree_desc empty, real;
+
+	tree = read_object_with_reference(new, tree_type, &real.size, NULL);
+	if (!tree)
+		die("unable to read root tree (%s)", sha1_to_hex(new));
+	real.buf = tree;
+
+	empty.size = 0;
+	empty.buf = "";
+	retval = diff_tree(&empty, &real, base, opt);
+	free(tree);
+	return retval;
+}
+
 static int count_paths(const char **paths)
 {
 	int i = 0;