Merge branch 'br/misc'

* br/misc:
  Use transparent background for the cgit logo
  ssdiff: anchors for ssdiff
  implement repo.logo and repo.logo-link

9 files changed, 74 insertions, 17 deletions

diff --git a/cgit.c b/cgit.c
index 71f3fc8..916feb4 100644
--- a/cgit.c
+++ b/cgit.c
@@ -28,99 +28,103 @@ void add_mimetype(const char *name, const char *value)
 
 struct cgit_filter *new_filter(const char *cmd, int extra_args)
 {
         struct cgit_filter *f;
 
         if (!cmd || !cmd[0])
                 return NULL;
 
         f = xmalloc(sizeof(struct cgit_filter));
         f->cmd = xstrdup(cmd);
         f->argv = xmalloc((2 + extra_args) * sizeof(char *));
         f->argv[0] = f->cmd;
         f->argv[1] = NULL;
         return f;
 }
 
 static void process_cached_repolist(const char *path);
 
 void repo_config(struct cgit_repo *repo, const char *name, const char *value)
 {
         if (!strcmp(name, "name"))
                 repo->name = xstrdup(value);
         else if (!strcmp(name, "clone-url"))
                 repo->clone_url = xstrdup(value);
         else if (!strcmp(name, "desc"))
                 repo->desc = xstrdup(value);
         else if (!strcmp(name, "owner"))
                 repo->owner = xstrdup(value);
         else if (!strcmp(name, "defbranch"))
                 repo->defbranch = xstrdup(value);
         else if (!strcmp(name, "snapshots"))
                 repo->snapshots = ctx.cfg.snapshots & cgit_parse_snapshots_mask(value);
         else if (!strcmp(name, "enable-commit-graph"))
                 repo->enable_commit_graph = ctx.cfg.enable_commit_graph * atoi(value);
         else if (!strcmp(name, "enable-log-filecount"))
                 repo->enable_log_filecount = ctx.cfg.enable_log_filecount * atoi(value);
         else if (!strcmp(name, "enable-log-linecount"))
                 repo->enable_log_linecount = ctx.cfg.enable_log_linecount * atoi(value);
         else if (!strcmp(name, "enable-remote-branches"))
                 repo->enable_remote_branches = atoi(value);
         else if (!strcmp(name, "enable-subject-links"))
                 repo->enable_subject_links = atoi(value);
         else if (!strcmp(name, "max-stats"))
                 repo->max_stats = cgit_find_stats_period(value, NULL);
         else if (!strcmp(name, "module-link"))
                 repo->module_link= xstrdup(value);
         else if (!strcmp(name, "section"))
                 repo->section = xstrdup(value);
-        else if (!strcmp(name, "readme") && value != NULL) {
+        else if (!strcmp(name, "readme") && value != NULL)
                 repo->readme = xstrdup(value);
-        } else if (ctx.cfg.enable_filter_overrides) {
+        else if (!strcmp(name, "logo") && value != NULL)
+                repo->logo = xstrdup(value);
+        else if (!strcmp(name, "logo-link") && value != NULL)
+                repo->logo_link = xstrdup(value);
+        else if (ctx.cfg.enable_filter_overrides) {
                 if (!strcmp(name, "about-filter"))
                         repo->about_filter = new_filter(value, 0);
                 else if (!strcmp(name, "commit-filter"))
                         repo->commit_filter = new_filter(value, 0);
                 else if (!strcmp(name, "source-filter"))
                         repo->source_filter = new_filter(value, 1);
         }
 }
 
 void config_cb(const char *name, const char *value)
 {
         if (!strcmp(name, "section") || !strcmp(name, "repo.group"))
                 ctx.cfg.section = xstrdup(value);
         else if (!strcmp(name, "repo.url"))
                 ctx.repo = cgit_add_repo(value);
         else if (ctx.repo && !strcmp(name, "repo.path"))
                 ctx.repo->path = trim_end(value, '/');
         else if (ctx.repo && !prefixcmp(name, "repo."))
                 repo_config(ctx.repo, name + 5, value);
         else if (!strcmp(name, "readme"))
                 ctx.cfg.readme = xstrdup(value);
         else if (!strcmp(name, "root-title"))
                 ctx.cfg.root_title = xstrdup(value);
         else if (!strcmp(name, "root-desc"))
                 ctx.cfg.root_desc = xstrdup(value);
         else if (!strcmp(name, "root-readme"))
                 ctx.cfg.root_readme = xstrdup(value);
         else if (!strcmp(name, "css"))
                 ctx.cfg.css = xstrdup(value);
         else if (!strcmp(name, "favicon"))
                 ctx.cfg.favicon = xstrdup(value);
         else if (!strcmp(name, "footer"))
                 ctx.cfg.footer = xstrdup(value);
         else if (!strcmp(name, "head-include"))
                 ctx.cfg.head_include = xstrdup(value);
         else if (!strcmp(name, "header"))
                 ctx.cfg.header = xstrdup(value);
         else if (!strcmp(name, "logo"))
                 ctx.cfg.logo = xstrdup(value);
         else if (!strcmp(name, "index-header"))
                 ctx.cfg.index_header = xstrdup(value);
         else if (!strcmp(name, "index-info"))
                 ctx.cfg.index_info = xstrdup(value);
         else if (!strcmp(name, "logo-link"))
                 ctx.cfg.logo_link = xstrdup(value);
         else if (!strcmp(name, "module-link"))
                 ctx.cfg.module_link = xstrdup(value);
         else if (!strcmp(name, "strict-export"))
diff --git a/cgit.css b/cgit.css
index 008cff8..1d90057 100644
--- a/cgit.css
+++ b/cgit.css
@@ -248,97 +248,97 @@ table#downloads th {
 
 div#blob {
         border: solid 1px black;
 }
 
 div.error {
         color: red;
         font-weight: bold;
         margin: 1em 2em;
 }
 
 a.ls-blob, a.ls-dir, a.ls-mod {
         font-family: monospace;
 }
 
 td.ls-size {
         text-align: right;
         font-family: monospace;
         width: 10em;
 }
 
 td.ls-mode {
         font-family: monospace;
         width: 10em;
 }
 
 table.blob {
         margin-top: 0.5em;
         border-top: solid 1px black;
 }
 
 table.blob td.lines {
         margin: 0; padding: 0 0 0 0.5em;
         vertical-align: top;
         color: black;
 }
 
 table.blob td.linenumbers {
         margin: 0; padding: 0 0.5em 0 0.5em;
         vertical-align: top;
         text-align: right;
         border-right: 1px solid gray;
 }
 
 table.blob pre {
         padding: 0; margin: 0;
 }
 
-table.blob a.no {
+table.blob a.no, table.ssdiff a.no {
         color: gray;
         text-align: right;
         text-decoration: none;
 }
 
 table.blob a.no a:hover {
         color: black;
 }
 
 table.bin-blob {
         margin-top: 0.5em;
         border: solid 1px black;
 }
 
 table.bin-blob th {
         font-family: monospace;
         white-space: pre;
         border: solid 1px #777;
         padding: 0.5em 1em;
 }
 
 table.bin-blob td {
         font-family: monospace;
         white-space: pre;
         border-left: solid 1px #777;
         padding: 0em 1em;
 }
 
 table.nowrap td {
         white-space: nowrap;
 }
 
 table.commit-info {
         border-collapse: collapse;
         margin-top: 1.5em;
 }
 
 table.commit-info th {
         text-align: left;
         font-weight: normal;
         padding: 0.1em 1em 0.1em 0.1em;
         vertical-align: top;
 }
 
 table.commit-info td {
         font-weight: normal;
         padding: 0.1em 1em 0.1em 0.1em;
 }
diff --git a/cgit.h b/cgit.h
index 74aa340..b5f00fc 100644
--- a/cgit.h
+++ b/cgit.h
@@ -26,96 +26,98 @@
 /*
  * Dateformats used on misc. pages
  */
 #define FMT_LONGDATE "%Y-%m-%d %H:%M:%S (%Z)"
 #define FMT_SHORTDATE "%Y-%m-%d"
 #define FMT_ATOMDATE "%Y-%m-%dT%H:%M:%SZ"
 
 
 /*
  * Limits used for relative dates
  */
 #define TM_MIN    60
 #define TM_HOUR  (TM_MIN * 60)
 #define TM_DAY   (TM_HOUR * 24)
 #define TM_WEEK  (TM_DAY * 7)
 #define TM_YEAR  (TM_DAY * 365)
 #define TM_MONTH (TM_YEAR / 12.0)
 
 
 /*
  * Default encoding
  */
 #define PAGE_ENCODING "UTF-8"
 
 typedef void (*configfn)(const char *name, const char *value);
 typedef void (*filepair_fn)(struct diff_filepair *pair);
 typedef void (*linediff_fn)(char *line, int len);
 
 struct cgit_filter {
         char *cmd;
         char **argv;
         int old_stdout;
         int pipe_fh[2];
         int pid;
         int exitstatus;
 };
 
 struct cgit_repo {
         char *url;
         char *name;
         char *path;
         char *desc;
         char *owner;
         char *defbranch;
         char *module_link;
         char *readme;
         char *section;
         char *clone_url;
+        char *logo;
+        char *logo_link;
         int snapshots;
         int enable_commit_graph;
         int enable_log_filecount;
         int enable_log_linecount;
         int enable_remote_branches;
         int enable_subject_links;
         int max_stats;
         time_t mtime;
         struct cgit_filter *about_filter;
         struct cgit_filter *commit_filter;
         struct cgit_filter *source_filter;
 };
 
 typedef void (*repo_config_fn)(struct cgit_repo *repo, const char *name,
               const char *value);
 
 struct cgit_repolist {
         int length;
         int count;
         struct cgit_repo *repos;
 };
 
 struct commitinfo {
         struct commit *commit;
         char *author;
         char *author_email;
         unsigned long author_date;
         char *committer;
         char *committer_email;
         unsigned long committer_date;
         char *subject;
         char *msg;
         char *msg_encoding;
 };
 
 struct taginfo {
         char *tagger;
         char *tagger_email;
         unsigned long tagger_date;
         char *msg;
 };
 
 struct refinfo {
         const char *refname;
         struct object *object;
         union {
                 struct taginfo *tag;
                 struct commitinfo *commit;
diff --git a/cgit.png b/cgit.png
index d7f70bc..0bdf5a7 100644
--- a/cgit.png
+++ b/cgit.png
diff --git a/cgitrc.5.txt b/cgitrc.5.txt
index a832830..c3698a6 100644
--- a/cgitrc.5.txt
+++ b/cgitrc.5.txt
@@ -342,96 +342,105 @@ virtual-root::
         will also cause cgit to generate 'virtual urls', i.e. urls like
         '/cgit/tree/README' as opposed to '?r=cgit&p=tree&path=README'. Default
         value: none.
         NOTE: cgit has recently learned how to use PATH_INFO to achieve the
         same kind of virtual urls, so this option will probably be deprecated.
 
 REPOSITORY SETTINGS
 -------------------
 repo.about-filter::
         Override the default about-filter. Default value: none. See also:
         "enable-filter-overrides".
 
 repo.clone-url::
         A list of space-separated urls which can be used to clone this repo.
         Default value: none.
 
 repo.commit-filter::
         Override the default commit-filter. Default value: none. See also:
         "enable-filter-overrides".
 
 repo.defbranch::
         The name of the default branch for this repository. If no such branch
         exists in the repository, the first branch name (when sorted) is used
         as default instead. Default value: "master".
 
 repo.desc::
         The value to show as repository description. Default value: none.
 
 repo.enable-commit-graph::
         A flag which can be used to disable the global setting
         `enable-commit-graph'. Default value: none.
 
 repo.enable-log-filecount::
         A flag which can be used to disable the global setting
         `enable-log-filecount'. Default value: none.
 
 repo.enable-log-linecount::
         A flag which can be used to disable the global setting
         `enable-log-linecount'. Default value: none.
 
 repo.enable-remote-branches::
         Flag which, when set to "1", will make cgit display remote branches
         in the summary and refs views. Default value: <enable-remote-branches>.
 
 repo.enable-subject-links::
         A flag which can be used to override the global setting
         `enable-subject-links'. Default value: none.
 
+repo.logo::
+        Url which specifies the source of an image which will be used as a logo
+        on this repo's pages. Default value: global logo.
+
+repo.logo-link::
+        Url loaded when clicking on the cgit logo image. If unspecified the
+        calculated url of the repository index page will be used. Default
+        value: global logo-link.
+
 repo.max-stats::
         Override the default maximum statistics period. Valid values are equal
         to the values specified for the global "max-stats" setting. Default
         value: none.
 
 repo.name::
         The value to show as repository name. Default value: <repo.url>.
 
 repo.owner::
         A value used to identify the owner of the repository. Default value:
         none.
 
 repo.path::
         An absolute path to the repository directory. For non-bare repositories
         this is the .git-directory. Default value: none.
 
 repo.readme::
         A path (relative to <repo.path>) which specifies a file to include
         verbatim as the "About" page for this repo. You may also specify a
         git refspec by head or by hash by prepending the refspec followed by
         a colon. For example, "master:docs/readme.mkd" Default value: <readme>.
 
 repo.snapshots::
         A mask of allowed snapshot-formats for this repo, restricted by the
         "snapshots" global setting. Default value: <snapshots>.
 
 repo.section::
         Override the current section name for this repository. Default value:
         none.
 
 repo.source-filter::
         Override the default source-filter. Default value: none. See also:
         "enable-filter-overrides".
 
 repo.url::
         The relative url used to access the repository. This must be the first
         setting specified for each repo. Default value: none.
 
 
 REPOSITORY-SPECIFIC CGITRC FILE
 -------------------------------
 When the option "scan-path" is used to auto-discover git repositories, cgit
 will try to parse the file "cgitrc" within any found repository. Such a
 repo-specific config file may contain any of the repo-specific options
 described above, except "repo.url" and "repo.path". Additionally, the "filter"
 options are only acknowledged in repo-specific config files when
 "enable-filter-overrides" is set to "1".
 
diff --git a/ui-diff.c b/ui-diff.c
index 7ff7e46..a53425d 100644
--- a/ui-diff.c
+++ b/ui-diff.c
@@ -1,84 +1,95 @@
 /* ui-diff.c: show diff between two blobs
  *
  * Copyright (C) 2006 Lars Hjemli
  *
  * Licensed under GNU General Public License v2
  *   (see COPYING for full license text)
  */
 
 #include "cgit.h"
 #include "html.h"
 #include "ui-shared.h"
 #include "ui-ssdiff.h"
 
 unsigned char old_rev_sha1[20];
 unsigned char new_rev_sha1[20];
 
 static int files, slots;
 static int total_adds, total_rems, max_changes;
 static int lines_added, lines_removed;
 
 static struct fileinfo {
         char status;
         unsigned char old_sha1[20];
         unsigned char new_sha1[20];
         unsigned short old_mode;
         unsigned short new_mode;
         char *old_path;
         char *new_path;
         unsigned int added;
         unsigned int removed;
         unsigned long old_size;
         unsigned long new_size;
         int binary:1;
 } *items;
 
 static int use_ssdiff = 0;
+static struct diff_filepair *current_filepair;
+
+struct diff_filespec *cgit_get_current_old_file(void)
+{
+        return current_filepair->one;
+}
+
+struct diff_filespec *cgit_get_current_new_file(void)
+{
+        return current_filepair->two;
+}
 
 static void print_fileinfo(struct fileinfo *info)
 {
         char *class;
 
         switch (info->status) {
         case DIFF_STATUS_ADDED:
                 class = "add";
                 break;
         case DIFF_STATUS_COPIED:
                 class = "cpy";
                 break;
         case DIFF_STATUS_DELETED:
                 class = "del";
                 break;
         case DIFF_STATUS_MODIFIED:
                 class = "upd";
                 break;
         case DIFF_STATUS_RENAMED:
                 class = "mov";
                 break;
         case DIFF_STATUS_TYPE_CHANGED:
                 class = "typ";
                 break;
         case DIFF_STATUS_UNKNOWN:
                 class = "unk";
                 break;
         case DIFF_STATUS_UNMERGED:
                 class = "stg";
                 break;
         default:
                 die("bug: unhandled diff status %c", info->status);
         }
 
         html("<tr>");
         htmlf("<td class='mode'>");
         if (is_null_sha1(info->new_sha1)) {
                 cgit_print_filemode(info->old_mode);
         } else {
                 cgit_print_filemode(info->new_mode);
         }
 
         if (info->old_mode != info->new_mode &&
             !is_null_sha1(info->old_sha1) &&
             !is_null_sha1(info->new_sha1)) {
                 html("<span class='modechange'>[");
                 cgit_print_filemode(info->old_mode);
                 html("]</span>");
@@ -239,96 +250,97 @@ static void header(unsigned char *sha1, char *path1, int 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/");
                 if (mode1 != 0)
                         cgit_tree_link(path1, NULL, NULL, ctx.qry.head,
                                        sha1_to_hex(old_rev_sha1), path1);
                 else
                         html_txt(path1);
                 html("<br/>+++ b/");
                 if (mode2 != 0)
                         cgit_tree_link(path2, NULL, NULL, ctx.qry.head,
                                        sha1_to_hex(new_rev_sha1), path2);
                 else
                         html_txt(path2);
         }
         html("</div>");
 }
 
 static void print_ssdiff_link()
 {
         if (!strcmp(ctx.qry.page, "diff")) {
                 if (use_ssdiff)
                         cgit_diff_link("Unidiff", NULL, NULL, ctx.qry.head,
                                        ctx.qry.sha1, ctx.qry.sha2, ctx.qry.path, 1);
                 else
                         cgit_diff_link("Side-by-side diff", NULL, NULL,
                                        ctx.qry.head, ctx.qry.sha1,
                                        ctx.qry.sha2, ctx.qry.path, 1);
         }
 }
 
 static void filepair_cb(struct diff_filepair *pair)
 {
         unsigned long old_size = 0;
         unsigned long new_size = 0;
         int binary = 0;
         linediff_fn print_line_fn = print_line;
 
+        current_filepair = pair;
         if (use_ssdiff) {
                 cgit_ssdiff_header_begin();
                 print_line_fn = cgit_ssdiff_line_cb;
         }
         header(pair->one->sha1, pair->one->path, pair->one->mode,
                pair->two->sha1, pair->two->path, pair->two->mode);
         if (use_ssdiff)
                 cgit_ssdiff_header_end();
         if (S_ISGITLINK(pair->one->mode) || S_ISGITLINK(pair->two->mode)) {
                 if (S_ISGITLINK(pair->one->mode))
                         print_line_fn(fmt("-Subproject %s", sha1_to_hex(pair->one->sha1)), 52);
                 if (S_ISGITLINK(pair->two->mode))
                         print_line_fn(fmt("+Subproject %s", sha1_to_hex(pair->two->sha1)), 52);
                 if (use_ssdiff)
                         cgit_ssdiff_footer();
                 return;
         }
         if (cgit_diff_files(pair->one->sha1, pair->two->sha1, &old_size,
                             &new_size, &binary, ctx.qry.context,
                             ctx.qry.ignorews, print_line_fn))
                 cgit_print_error("Error running diff");
         if (binary) {
                 if (use_ssdiff)
                         html("<tr><td colspan='4'>Binary files differ</td></tr>");
                 else
                         html("Binary files differ");
         }
         if (use_ssdiff)
                 cgit_ssdiff_footer();
 }
 
 void cgit_print_diff(const char *new_rev, const char *old_rev, const char *prefix)
 {
         enum object_type type;
         unsigned long size;
         struct commit *commit, *commit2;
 
         if (!new_rev)
                 new_rev = ctx.qry.head;
         get_sha1(new_rev, new_rev_sha1);
         type = sha1_object_info(new_rev_sha1, &size);
         if (type == OBJ_BAD) {
                 cgit_print_error(fmt("Bad object name: %s", new_rev));
                 return;
         }
         commit = lookup_commit_reference(new_rev_sha1);
         if (!commit || parse_commit(commit))
                 cgit_print_error(fmt("Bad commit: %s", sha1_to_hex(new_rev_sha1)));
diff --git a/ui-diff.h b/ui-diff.h
index 70b2926..12d0c62 100644
--- a/ui-diff.h
+++ b/ui-diff.h
@@ -1,10 +1,16 @@
 #ifndef UI_DIFF_H
 #define UI_DIFF_H
 
 extern void cgit_print_diffstat(const unsigned char *old_sha1,
                                 const unsigned char *new_sha1);
 
 extern void cgit_print_diff(const char *new_hex, const char *old_hex,
                             const char *prefix);
 
+extern struct diff_filespec *cgit_get_current_old_file(void);
+extern struct diff_filespec *cgit_get_current_new_file(void);
+
+extern unsigned char old_rev_sha1[20];
+extern unsigned char new_rev_sha1[20];
+
 #endif /* UI_DIFF_H */
diff --git a/ui-shared.c b/ui-shared.c
index ae29615..7efae7a 100644
--- a/ui-shared.c
+++ b/ui-shared.c
@@ -711,107 +711,117 @@ void cgit_add_hidden_formfields(int incl_head, int incl_search,
 
         if (incl_head && ctx.qry.head && ctx.repo->defbranch &&
             strcmp(ctx.qry.head, ctx.repo->defbranch))
                 html_hidden("h", ctx.qry.head);
 
         if (ctx.qry.sha1)
                 html_hidden("id", ctx.qry.sha1);
         if (ctx.qry.sha2)
                 html_hidden("id2", ctx.qry.sha2);
         if (ctx.qry.showmsg)
                 html_hidden("showmsg", "1");
 
         if (incl_search) {
                 if (ctx.qry.grep)
                         html_hidden("qt", ctx.qry.grep);
                 if (ctx.qry.search)
                         html_hidden("q", ctx.qry.search);
         }
 }
 
 static const char *hc(struct cgit_context *ctx, const char *page)
 {
         return strcmp(ctx->qry.page, page) ? NULL : "active";
 }
 
 static void cgit_print_path_crumbs(struct cgit_context *ctx, char *path)
 {
         char *old_path = ctx->qry.path;
         char *p = path, *q, *end = path + strlen(path);
 
         ctx->qry.path = NULL;
         cgit_self_link("root", NULL, NULL, ctx);
         ctx->qry.path = p = path;
         while (p < end) {
                 if (!(q = strchr(p, '/')))
                         q = end;
                 *q = '\0';
                 html_txt("/");
                 cgit_self_link(p, NULL, NULL, ctx);
                 if (q < end)
                         *q = '/';
                 p = q + 1;
         }
         ctx->qry.path = old_path;
 }
 
 static void print_header(struct cgit_context *ctx)
 {
+        char *logo = NULL, *logo_link = NULL;
+
         html("<table id='header'>\n");
         html("<tr>\n");
 
-        if (ctx->cfg.logo && ctx->cfg.logo[0] != 0) {
+        if (ctx->repo && ctx->repo->logo && *ctx->repo->logo)
+                logo = ctx->repo->logo;
+        else
+                logo = ctx->cfg.logo;
+        if (ctx->repo && ctx->repo->logo_link && *ctx->repo->logo_link)
+                logo_link = ctx->repo->logo_link;
+        else
+                logo_link = ctx->cfg.logo_link;
+        if (logo && *logo) {
                 html("<td class='logo' rowspan='2'><a href='");
-                if (ctx->cfg.logo_link)
-                        html_attr(ctx->cfg.logo_link);
+                if (logo_link && *logo_link)
+                        html_attr(logo_link);
                 else
                         html_attr(cgit_rooturl());
                 html("'><img src='");
-                html_attr(ctx->cfg.logo);
+                html_attr(logo);
                 html("' alt='cgit logo'/></a></td>\n");
         }
 
         html("<td class='main'>");
         if (ctx->repo) {
                 cgit_index_link("index", NULL, NULL, NULL, 0);
                 html(" : ");
                 cgit_summary_link(ctx->repo->name, ctx->repo->name, NULL, NULL);
                 html("</td><td class='form'>");
                 html("<form method='get' action=''>\n");
                 cgit_add_hidden_formfields(0, 1, ctx->qry.page);
                 html("<select name='h' onchange='this.form.submit();'>\n");
                 for_each_branch_ref(print_branch_option, ctx->qry.head);
                 html("</select> ");
                 html("<input type='submit' name='' value='switch'/>");
                 html("</form>");
         } else
                 html_txt(ctx->cfg.root_title);
         html("</td></tr>\n");
 
         html("<tr><td class='sub'>");
         if (ctx->repo) {
                 html_txt(ctx->repo->desc);
                 html("</td><td class='sub right'>");
                 html_txt(ctx->repo->owner);
         } else {
                 if (ctx->cfg.root_desc)
                         html_txt(ctx->cfg.root_desc);
                 else if (ctx->cfg.index_info)
                         html_include(ctx->cfg.index_info);
         }
         html("</td></tr></table>\n");
 }
 
 void cgit_print_pageheader(struct cgit_context *ctx)
 {
         html("<div id='cgit'>");
         if (!ctx->cfg.noheader)
                 print_header(ctx);
 
         html("<table class='tabs'><tr><td>\n");
         if (ctx->repo) {
                 cgit_summary_link("summary", NULL, hc(ctx, "summary"),
                                   ctx->qry.head);
                 cgit_refs_link("refs", NULL, hc(ctx, "refs"), ctx->qry.head,
                                ctx->qry.sha1, NULL);
                 cgit_log_link("log", NULL, hc(ctx, "log"), ctx->qry.head,
                               NULL, ctx->qry.vpath, 0, NULL, NULL,
diff --git a/ui-ssdiff.c b/ui-ssdiff.c
index 408e620..2481585 100644
--- a/ui-ssdiff.c
+++ b/ui-ssdiff.c
@@ -1,51 +1,52 @@
 #include "cgit.h"
 #include "html.h"
 #include "ui-shared.h"
+#include "ui-diff.h"
 
 extern int use_ssdiff;
 
 static int current_old_line, current_new_line;
 
 struct deferred_lines {
         int line_no;
         char *line;
         struct deferred_lines *next;
 };
 
 static struct deferred_lines *deferred_old, *deferred_old_last;
 static struct deferred_lines *deferred_new, *deferred_new_last;
 
 static char *longest_common_subsequence(char *A, char *B)
 {
         int i, j, ri;
         int m = strlen(A);
         int n = strlen(B);
         int L[m + 1][n + 1];
         int tmp1, tmp2;
         int lcs_length;
         char *result;
 
         for (i = m; i >= 0; i--) {
                 for (j = n; j >= 0; j--) {
                         if (A[i] == '\0' || B[j] == '\0') {
                                 L[i][j] = 0;
                         } else if (A[i] == B[j]) {
                                 L[i][j] = 1 + L[i + 1][j + 1];
                         } else {
                                 tmp1 = L[i + 1][j];
                                 tmp2 = L[i][j + 1];
                                 L[i][j] = (tmp1 > tmp2 ? tmp1 : tmp2);
                         }
                 }
         }
 
         lcs_length = L[0][0];
         result = xmalloc(lcs_length + 2);
         memset(result, 0, sizeof(*result) * (lcs_length + 2));
 
         ri = 0;
         i = 0;
         j = 0;
         while (i < m && j < n) {
                 if (A[i] == B[j]) {
                         result[ri] = A[i];
@@ -146,122 +147,135 @@ static void deferred_old_add(char *line, int line_no)
 
 static void deferred_new_add(char *line, int line_no)
 {
         struct deferred_lines *item = xmalloc(sizeof(struct deferred_lines));
         item->line = xstrdup(line);
         item->line_no = line_no;
         item->next = NULL;
         if (deferred_new) {
                 deferred_new_last->next = item;
                 deferred_new_last = item;
         } else {
                 deferred_new = deferred_new_last = item;
         }
 }
 
 static void print_part_with_lcs(char *class, char *line, char *lcs)
 {
         int line_len = strlen(line);
         int i, j;
         char c[2] = " ";
         int same = 1;
 
         j = 0;
         for (i = 0; i < line_len; i++) {
                 c[0] = line[i];
                 if (same) {
                         if (line[i] == lcs[j])
                                 j += 1;
                         else {
                                 same = 0;
                                 htmlf("<span class='%s'>", class);
                         }
                 } else if (line[i] == lcs[j]) {
                         same = 1;
                         htmlf("</span>");
                         j += 1;
                 }
                 html_txt(c);
         }
 }
 
 static void print_ssdiff_line(char *class,
                               int old_line_no,
                               char *old_line,
                               int new_line_no,
                               char *new_line, int individual_chars)
 {
         char *lcs = NULL;
+
         if (old_line)
                 old_line = replace_tabs(old_line + 1);
         if (new_line)
                 new_line = replace_tabs(new_line + 1);
         if (individual_chars && old_line && new_line)
                 lcs = longest_common_subsequence(old_line, new_line);
-        html("<tr>");
-        if (old_line_no > 0)
-                htmlf("<td class='lineno'>%d</td><td class='%s'>",
-                      old_line_no, class);
-        else if (old_line)
+        html("<tr>\n");
+        if (old_line_no > 0) {
+                struct diff_filespec *old_file = cgit_get_current_old_file();
+                char *lineno_str = fmt("n%d", old_line_no);
+                char *id_str = fmt("%s#%s", is_null_sha1(old_file->sha1)?"HEAD":sha1_to_hex(old_rev_sha1), lineno_str);
+                html("<td class='lineno'><a class='no' href='");
+                html(cgit_fileurl(ctx.repo->url, "tree", old_file->path, id_str));
+                htmlf("' id='%s' name='%s'>%s</a>", lineno_str, lineno_str, lineno_str + 1);
+                html("</td>");
+                htmlf("<td class='%s'>", class);
+        } else if (old_line)
                 htmlf("<td class='lineno'></td><td class='%s'>", class);
         else
                 htmlf("<td class='lineno'></td><td class='%s_dark'>", class);
         if (old_line) {
                 if (lcs)
                         print_part_with_lcs("del", old_line, lcs);
                 else
                         html_txt(old_line);
         }
 
-        html("</td>");
-        if (new_line_no > 0)
-                htmlf("<td class='lineno'>%d</td><td class='%s'>",
-                      new_line_no, class);
-        else if (new_line)
+        html("</td>\n");
+        if (new_line_no > 0) {
+                struct diff_filespec *new_file = cgit_get_current_new_file();
+                char *lineno_str = fmt("n%d", new_line_no);
+                char *id_str = fmt("%s#%s", is_null_sha1(new_file->sha1)?"HEAD":sha1_to_hex(new_rev_sha1), lineno_str);
+                html("<td class='lineno'><a class='no' href='");
+                html(cgit_fileurl(ctx.repo->url, "tree", new_file->path, id_str));
+                htmlf("' id='%s' name='%s'>%s</a>", lineno_str, lineno_str, lineno_str + 1);
+                html("</td>");
+                htmlf("<td class='%s'>", class);
+        } else if (new_line)
                 htmlf("<td class='lineno'></td><td class='%s'>", class);
         else
                 htmlf("<td class='lineno'></td><td class='%s_dark'>", class);
         if (new_line) {
                 if (lcs)
                         print_part_with_lcs("add", new_line, lcs);
                 else
                         html_txt(new_line);
         }
 
         html("</td></tr>");
         if (lcs)
                 free(lcs);
         if (new_line)
                 free(new_line);
         if (old_line)
                 free(old_line);
 }
 
 static void print_deferred_old_lines()
 {
         struct deferred_lines *iter_old, *tmp;
         iter_old = deferred_old;
         while (iter_old) {
                 print_ssdiff_line("del", iter_old->line_no,
                                   iter_old->line, -1, NULL, 0);
                 tmp = iter_old->next;
                 free(iter_old);
                 iter_old = tmp;
         }
 }
 
 static void print_deferred_new_lines()
 {
         struct deferred_lines *iter_new, *tmp;
         iter_new = deferred_new;
         while (iter_new) {
                 print_ssdiff_line("add", -1, NULL,
                                   iter_new->line_no, iter_new->line, 0);
                 tmp = iter_new->next;
                 free(iter_new);
                 iter_new = tmp;
         }
 }
 
 static void print_deferred_changed_lines()
 {
         struct deferred_lines *iter_old, *iter_new, *tmp;