Add submodule links in tree listing

When a submodule occurs in a tree, generate a link to show the
module/commit. The link is specified as a sprintf string in /etc/cgitrc,
using parameters 'module-link' and 'repo.module-link'. This should probably
be extended with repo.module-link.$path.

Signed-off-by: Lars Hjemli <hjemli@gmail.com>

6 files changed, 27 insertions, 12 deletions

diff --git a/cgit.css b/cgit.css
index 640bbc9..ef4bc62 100644
--- a/cgit.css
+++ b/cgit.css
@@ -136,17 +136,17 @@ div#blob {
 }
 
 div.error {
 	color: red;
 	font-weight: bold;
 	margin: 1em 2em;
 }
 
-div.ls-blob, div.ls-dir {
+td.ls-blob, td.ls-dir, td.ls-mod {
 	font-family: monospace;
 }
 
 div.ls-dir a {
 	font-weight: bold;
 }
 
 th.filesize, td.filesize {
diff --git a/cgit.h b/cgit.h
index 292e488..b7f8827 100644
--- a/cgit.h
+++ b/cgit.h
@@ -28,16 +28,17 @@ struct cacheitem {
 };
 
 struct repoinfo {
 	char *url;
 	char *name;
 	char *path;
 	char *desc;
 	char *owner;
+	char *module_link;
 	int snapshots;
 };
 
 struct repolist {
 	int length;
 	int count;
 	struct repoinfo *repos;
 };
@@ -65,16 +66,17 @@ extern const char cgit_version[];
 
 extern struct repolist cgit_repolist;
 extern struct repoinfo *cgit_repo;
 
 extern char *cgit_root_title;
 extern char *cgit_css;
 extern char *cgit_logo;
 extern char *cgit_logo_link;
+extern char *cgit_module_link;
 extern char *cgit_virtual_root;
 extern char *cgit_cache_root;
 
 extern int cgit_nocache;
 extern int cgit_snapshots;
 extern int cgit_max_lock_attempts;
 extern int cgit_cache_root_ttl;
 extern int cgit_cache_repo_ttl;
diff --git a/cgitrc b/cgitrc
index 3bae642..f217b39 100644
--- a/cgitrc
+++ b/cgitrc
@@ -42,16 +42,20 @@
 ## Link to logo file
 #logo=/cgit/git-logo.png
 
 
 ## Url loaded when clicking the logo
 #logo-link=http://www.kernel.org/pub/software/scm/git/docs/
 
 
+## Url loaded when clicking a submodule link
+#module-link=./?repo=%s&page=commit&id=%s
+
+
 ## Number of chars shown of commit subject message (in log view)
 #max-message-length=60
 
 
 ## Root of cached output
 #cache-root=/var/cache/cgit
 
 
@@ -76,9 +80,10 @@
 
 ## Example repository entry. Required values are repo.url and repo.path (each
 ## repository section must start with repo.url).
 #repo.url=cgit
 #repo.name=cgit
 #repo.desc=the caching cgi for git
 #repo.path=/pub/git/cgit
 #repo.owner=Lars Hjemli
-#repo.snapshots=1    # override a sitewide snapshot-setting
+#repo.snapshots=1				# override a sitewide snapshot-setting
+#repo.module-link=/git/%s/commit/?id=%s		# override the standard module-link
diff --git a/html.c b/html.c
index c0b2ed4..175b4b6 100644
--- a/html.c
+++ b/html.c
@@ -153,15 +153,16 @@ void html_fileperm(unsigned short mode)
 }
 
 void html_filemode(unsigned short mode)
 {
 	if (S_ISDIR(mode))
 		html("d");
 	else if (S_ISLNK(mode))
 		html("l");
+	else if (S_ISDIRLNK(mode))
+		html("m");
 	else
 		html("-");
 	html_fileperm(mode >> 6);
 	html_fileperm(mode >> 3);
 	html_fileperm(mode);
 }
-
diff --git a/shared.c b/shared.c
index 531d8c0..19d2df0 100644
--- a/shared.c
+++ b/shared.c
@@ -10,16 +10,17 @@
 
 struct repolist cgit_repolist;
 struct repoinfo *cgit_repo;
 
 char *cgit_root_title   = "Git repository browser";
 char *cgit_css          = "/cgit.css";
 char *cgit_logo         = "/git-logo.png";
 char *cgit_logo_link    = "http://www.kernel.org/pub/software/scm/git/docs/";
+char *cgit_module_link  = "./?repo=%s&page=commit&id=%s";
 char *cgit_virtual_root = NULL;
 
 char *cgit_cache_root   = "/var/cache/cgit";
 
 int cgit_nocache               =  0;
 int cgit_snapshots             =  0;
 int cgit_max_lock_attempts     =  5;
 int cgit_cache_root_ttl        =  5;
@@ -80,29 +81,32 @@ struct repoinfo *add_repo(const char *url)
 
 	ret = &cgit_repolist.repos[cgit_repolist.count-1];
 	ret->url = xstrdup(url);
 	ret->name = ret->url;
 	ret->path = NULL;
 	ret->desc = NULL;
 	ret->owner = NULL;
 	ret->snapshots = cgit_snapshots;
+	ret->module_link = cgit_module_link;
 	return ret;
 }
 
 void cgit_global_config_cb(const char *name, const char *value)
 {
 	if (!strcmp(name, "root-title"))
 		cgit_root_title = xstrdup(value);
 	else if (!strcmp(name, "css"))
 		cgit_css = xstrdup(value);
 	else if (!strcmp(name, "logo"))
 		cgit_logo = xstrdup(value);
 	else if (!strcmp(name, "logo-link"))
 		cgit_logo_link = xstrdup(value);
+	else if (!strcmp(name, "module-link"))
+		cgit_module_link = xstrdup(value);
 	else if (!strcmp(name, "virtual-root"))
 		cgit_virtual_root = xstrdup(value);
 	else if (!strcmp(name, "nocache"))
 		cgit_nocache = atoi(value);
 	else if (!strcmp(name, "snapshots"))
 		cgit_snapshots = atoi(value);
 	else if (!strcmp(name, "cache-root"))
 		cgit_cache_root = xstrdup(value);
@@ -123,16 +127,18 @@ void cgit_global_config_cb(const char *name, const char *value)
 	else if (cgit_repo && !strcmp(name, "repo.path"))
 		cgit_repo->path = xstrdup(value);
 	else if (cgit_repo && !strcmp(name, "repo.desc"))
 		cgit_repo->desc = xstrdup(value);
 	else if (cgit_repo && !strcmp(name, "repo.owner"))
 		cgit_repo->owner = xstrdup(value);
 	else if (cgit_repo && !strcmp(name, "repo.snapshots"))
 		cgit_repo->snapshots = atoi(value);
+	else if (cgit_repo && !strcmp(name, "repo.module-link"))
+		cgit_repo->module_link= xstrdup(value);
 }
 
 void cgit_repo_config_cb(const char *name, const char *value)
 {
 	if (!strcmp(name, "name"))
 		cgit_repo_name = xstrdup(value);
 	else if (!strcmp(name, "desc"))
 		cgit_repo_desc = xstrdup(value);
diff --git a/ui-tree.c b/ui-tree.c
index 60f7560..dee8309 100644
--- a/ui-tree.c
+++ b/ui-tree.c
@@ -10,48 +10,49 @@
 
 
 static int print_entry(const unsigned char *sha1, const char *base, 
 		       int baselen, const char *pathname, unsigned int mode, 
 		       int stage)
 {
 	char *name;
 	enum object_type type;
-	unsigned long size;
+	unsigned long size = 0;
 
 	name = xstrdup(pathname);
 	type = sha1_object_info(sha1, &size);
-	if (type == OBJ_BAD) {
+	if (type == OBJ_BAD && !S_ISDIRLNK(mode)) {
 		htmlf("<tr><td colspan='3'>Bad object: %s %s</td></tr>",
 		      name,
 		      sha1_to_hex(sha1));
 		return 0;
 	}
 	html("<tr><td class='filemode'>");
 	html_filemode(mode);
-	html("</td><td>");
+	html("</td><td ");
 	if (S_ISDIRLNK(mode)) {
-		htmlf("<div class='ls-dirlnk'>%s => submodule</div>", name);
+		htmlf("class='ls-mod'><a href='");
+		html_attr(fmt(cgit_repo->module_link,
+			      name,
+			      sha1_to_hex(sha1)));
 	} else if (S_ISDIR(mode)) {
-		html("<div class='ls-dir'><a href='");
+		html("class='ls-dir'><a href='");
 		html_attr(cgit_pageurl(cgit_query_repo, "tree", 
 				       fmt("id=%s&path=%s%s/", 
 					   sha1_to_hex(sha1),
 					   cgit_query_path ? cgit_query_path : "",
 					   pathname)));
-		htmlf("'>%s</a></div>", name);
 	} else {
-		html("<div class='ls-blob'><a href='");
+		html("class='ls-blob'><a href='");
 		html_attr(cgit_pageurl(cgit_query_repo, "view",
 				      fmt("id=%s&path=%s%s", sha1_to_hex(sha1),
 					  cgit_query_path ? cgit_query_path : "",
 					  pathname)));
-		htmlf("'>%s</a></div>", name);
 	}
-	html("</div></td>");
+	htmlf("'>%s</a></div></td>", name);
 	htmlf("<td class='filesize'>%li</td>", size);
 	html("</tr>\n");
 	free(name);
 	return 0;
 }
 
 void cgit_print_tree(const char *hex, char *path)
 {