count-delta: match get_delta_hdr_size() changes.

diff --git a/tree-diff.c b/tree-diff.c
index 0ef06a9e36f55c0caec51064f552decd8a58be13..d978428910a33ee9443343beeb1574e79d2a71ad 100644 (file)
--- a/tree-diff.c
+++ b/tree-diff.c
@@ -9,7 +9,7 @@ static int nr_paths = 0;
 static const char **paths = NULL;
 static int *pathlens = NULL;
 
-static void update_tree_entry(struct tree_desc *desc)
+void update_tree_entry(struct tree_desc *desc)
 {
        void *buf = desc->buf;
        unsigned long size = desc->size;
@@ -21,7 +21,7 @@ static void update_tree_entry(struct tree_desc *desc)
        desc->size = size - len;
 }
 
-static const unsigned char *extract(struct tree_desc *desc, const char **pathp, unsigned int *modep)
+const unsigned char *tree_entry_extract(struct tree_desc *desc, const char **pathp, unsigned int *modep)
 {
        void *tree = desc->buf;
        unsigned long size = desc->size;
@@ -56,8 +56,8 @@ static int compare_tree_entry(struct tree_desc *t1, struct tree_desc *t2, const
        const unsigned char *sha1, *sha2;
        int cmp, pathlen1, pathlen2;
 
-       sha1 = extract(t1, &path1, &mode1);
-       sha2 = extract(t2, &path2, &mode2);
+       sha1 = tree_entry_extract(t1, &path1, &mode1);
+       sha2 = tree_entry_extract(t2, &path2, &mode2);
 
        pathlen1 = strlen(path1);
        pathlen2 = strlen(path2);
@@ -109,7 +109,7 @@ static int interesting(struct tree_desc *desc, const char *base)
        if (!nr_paths)
                return 1;
 
-       (void)extract(desc, &path, &mode);
+       (void)tree_entry_extract(desc, &path, &mode);
 
        pathlen = strlen(path);
        baselen = strlen(base);
@@ -167,7 +167,7 @@ static int show_entry(struct diff_options *opt, const char *prefix, struct tree_
 {
        unsigned mode;
        const char *path;
-       const unsigned char *sha1 = extract(desc, &path, &mode);
+       const unsigned char *sha1 = tree_entry_extract(desc, &path, &mode);
 
        if (opt->recursive && S_ISDIR(mode)) {
                char type[20];
@@ -263,6 +263,10 @@ void diff_tree_setup_paths(const char **p)
 
                paths = p;
                nr_paths = count_paths(paths);
+               if (nr_paths == 0) {
+                       pathlens = NULL;
+                       return;
+               }
                pathlens = xmalloc(nr_paths * sizeof(int));
                for (i=0; i<nr_paths; i++)
                        pathlens[i] = strlen(paths[i]);