addimg.patch for cgit

diff -aur cgit-0.11.1.orig/ui-tree.c cgit-0.11.1/ui-tree.c
--- cgit-0.11.1.orig/ui-tree.c  2015-03-05 08:58:28.000000000 -0600
+++ cgit-0.11.1/ui-tree.c   2015-03-17 14:33:29.921631785 -0500
@@ -60,6 +60,116 @@
    html("</code></pre></td></tr></table>\n");
 }

+static char *get_mimetype_from_file(const char *filename, const char *ext)
+{
+   static const char *delimiters;
+   char *result;
+   FILE *fd;
+   char line[1024];
+   char *mimetype;
+   char *token;
+
+   if (!filename)
+       return NULL;
+
+   fd = fopen(filename, "r");
+   if (!fd)
+       return NULL;
+
+   delimiters = " \t\r\n";
+   result = NULL;
+
+   /* loop over all lines in the file */
+   while (!result && fgets(line, sizeof(line), fd)) {
+       mimetype = strtok(line, delimiters);
+
+       /* skip empty lines and comment lines */
+       if (!mimetype || (mimetype[0] == '#'))
+           continue;
+
+       /* loop over all extensions of mimetype */
+       while ((token = strtok(NULL, delimiters))) {
+           if (!strcasecmp(ext, token)) {
+               result = xstrdup(mimetype);
+               break;
+           }
+       }
+   }
+   fclose(fd);
+
+   return result;
+}
+
+int isimg(const unsigned char *sha1, char *path)
+{
+   enum object_type type;
+   char *buf, *ext, *mimetype;
+   unsigned long size;
+   struct string_list_item *mime;
+
+   type = sha1_object_info(sha1, &size);
+
+   buf = read_sha1_file(sha1, &type, &size);
+   mimetype = NULL;
+   ext = strrchr(path, '.');
+   if (ext && *(++ext)) {
+       mime = string_list_lookup(&ctx.cfg.mimetypes, ext);
+       if (mime) {
+           mimetype = (char *)mime->util;
+       } else {
+           mimetype = get_mimetype_from_file(ctx.cfg.mimetype_file, ext);
+       }
+   }
+   if (!mimetype) {
+       if (buffer_is_binary(buf, size)) {
+           mimetype = "application/octet-stream";
+       } else {
+           mimetype = "text/plain";
+       }
+   }
+   if(strcmp(mimetype,"image/png")==0||strcmp(mimetype,"image/jpeg")==0||strcmp(mimetype,"image/gif")==0)
+       return 0;
+
+   return 1;
+}
+static void print_img(char *path, const char *rev){
+   char *delim = "?";
+       htmlf("<table summary='blob content' class='blob'><tr><td><img src=\"");
+   if (ctx.cfg.virtual_root) {
+       html_url_path(ctx.cfg.virtual_root);
+       html_url_path(ctx.repo->url);
+       if (ctx.repo->url[strlen(ctx.repo->url) - 1] != '/')
+           html("/");
+           html_url_path("plain");
+           html("/");
+           if (path)
+               html_url_path(path);
+   } else {
+       html_url_path(ctx.cfg.script_name);
+       html("?url=");
+       html_url_arg(ctx.repo->url);
+       if (ctx.repo->url[strlen(ctx.repo->url) - 1] != '/')
+           html("/");
+           html_url_arg("plain");
+           html("/");
+           if (path)
+               html_url_arg(path);
+           delim = "&amp;";
+   }
+   if (ctx.qry.head && strcmp(ctx.qry.head, ctx.repo->defbranch)) {
+       html(delim);
+       html("h=");
+       html_url_arg(ctx.qry.head);
+       delim = "&amp;";
+   }
+   if (rev && ctx.qry.head != NULL && strcmp(rev, ctx.qry.head)) {
+       html(delim);
+       html("id=");
+       html_url_arg(rev);
+   }
+       htmlf("\" /></td></tr></table>");
+}
+
 #define ROWLEN 32

 static void print_binary_buffer(char *buf, unsigned long size)
@@ -114,7 +224,9 @@
        return;
    }

-   if (buffer_is_binary(buf, size))
+   if(isimg(sha1,path)==0)
+       print_img(path, rev);
+   else if (buffer_is_binary(buf, size))
        print_binary_buffer(buf, size);
    else
        print_text_buffer(basename, buf, size);