1 files changed, 43 insertions, 19 deletions

diff --git a/ui-diff.c b/ui-diff.c
index afe1c90..3ed0a46 100644
--- a/ui-diff.c
+++ b/ui-diff.c
@@ -10,108 +10,132 @@
 
 
 /*
  * print a single line returned from xdiff
  */
 static void print_line(char *line, int len)
 {
         char *class = "ctx";
         char c = line[len-1];
 
         if (line[0] == '+')
                 class = "add";
         else if (line[0] == '-')
                 class = "del";
         else if (line[0] == '@')
                 class = "hunk";
 
         htmlf("<div class='%s'>", class);
         line[len-1] = '\0';
         html_txt(line);
         html("</div>");
         line[len-1] = c;
 }
 
-static void header(unsigned char *sha1, char *path1,
-                   unsigned char *sha2, char *path2)
+static void header(unsigned char *sha1, char *path1, int mode1,
+                   unsigned char *sha2, char *path2, int mode2)
 {
         char *abbrev1, *abbrev2;
-        if (is_null_sha1(sha1))
-                path1 = "dev/null";
-        if (is_null_sha1(sha2))
-                path2 = "dev/null";
+        int subproject;
+
+        subproject = (S_ISDIRLNK(mode1) || S_ISDIRLNK(mode2));
         html("<tr><td>");
         html("<div class='head'>");
         html("diff --git a/");
         html_txt(path1);
         html(" b/");
         html_txt(path2);
-        abbrev1 = xstrdup(find_unique_abbrev(sha1, DEFAULT_ABBREV));
-        abbrev2 = xstrdup(find_unique_abbrev(sha2, DEFAULT_ABBREV));
-        htmlf("\nindex %s..%s", abbrev1, abbrev2);
-        free(abbrev1);
-        free(abbrev2);
-        html("\n--- a/");
-        html_txt(path1);
-        html("\n+++ b/");
-        html_txt(path2);
+
+        if (is_null_sha1(sha1))
+                path1 = "dev/null";
+        if (is_null_sha1(sha2))
+                path2 = "dev/null";
+
+        if (mode1 == 0)
+                htmlf("<br/>new file mode %.6o", mode2);
+
+        if (mode2 == 0)
+                htmlf("<br/>deleted file mode %.6o", mode1);
+
+        if (!subproject) {
+                abbrev1 = xstrdup(find_unique_abbrev(sha1, DEFAULT_ABBREV));
+                abbrev2 = xstrdup(find_unique_abbrev(sha2, DEFAULT_ABBREV));
+                htmlf("<br/>index %s..%s", abbrev1, abbrev2);
+                free(abbrev1);
+                free(abbrev2);
+                if (mode1 != 0 && mode2 != 0) {
+                        htmlf(" %.6o", mode1);
+                        if (mode2 != mode1)
+                                htmlf("..%.6o", mode2);
+                }
+                html("<br/>--- a/");
+                html_txt(path1);
+                html("<br/>+++ b/");
+                html_txt(path2);
+        }
         html("</div>");
 }
 
 static void filepair_cb(struct diff_filepair *pair)
 {
-        header(pair->one->sha1, pair->one->path,
-               pair->two->sha1, pair->two->path);
+        header(pair->one->sha1, pair->one->path, pair->one->mode,
+               pair->two->sha1, pair->two->path, pair->two->mode);
+        if (S_ISDIRLNK(pair->one->mode) || S_ISDIRLNK(pair->two->mode)) {
+                if (S_ISDIRLNK(pair->one->mode))
+                        print_line(fmt("-Subproject %s", sha1_to_hex(pair->one->sha1)), 52);
+                if (S_ISDIRLNK(pair->two->mode))
+                        print_line(fmt("+Subproject %s", sha1_to_hex(pair->two->sha1)), 52);
+                return;
+        }
         if (cgit_diff_files(pair->one->sha1, pair->two->sha1, print_line))
                 cgit_print_error("Error running diff");
-        html("</tr></td>");
 }
 
 void cgit_print_diff(const char *head, const char *old_hex, const char *new_hex, char *path)
 {
         unsigned char sha1[20], sha2[20];
         enum object_type type;
         unsigned long size;
         struct commit *commit;
 
         if (head && !old_hex && !new_hex) {
                 get_sha1(head, sha1);
                 commit = lookup_commit_reference(sha1);
                 if (commit && !parse_commit(commit)) {
                         html("<table class='diff'>");
                         cgit_diff_commit(commit, filepair_cb);
                         html("</td></tr></table>");
                 }
                 return;
         }
 
         get_sha1(old_hex, sha1);
         get_sha1(new_hex, sha2);
 
         type = sha1_object_info(sha1, &size);
         if (type == OBJ_BAD) {
                 type = sha1_object_info(sha2, &size);
                 if (type == OBJ_BAD) {
                         cgit_print_error(fmt("Bad object names: %s, %s", old_hex, new_hex));
                         return;
                 }
         }
 
         html("<table class='diff'>");
         switch(type) {
         case OBJ_BLOB:
                 html("<tr><td>");
-                header(sha1, path, sha2, path);
+                header(sha1, path, 0644, sha2, path, 0644);
                 if (cgit_diff_files(sha1, sha2, print_line))
                         cgit_print_error("Error running diff");
                 html("</tr></td>");
                 break;
         case OBJ_TREE:
                 cgit_diff_tree(sha1, sha2, filepair_cb);
                 break;
         default:
                 cgit_print_error(fmt("Unhandled object type: %s",
                                      typename(type)));
                 break;
         }
         html("</td></tr></table>");
 }