ui-tree.c: add support for path-selected submodule links

The current 'repo.module-link' option is sufficient when all gitlinks
in a repository can be converted to commit links in a uniform way, but
not when different submodules/paths needs different settings.

This patch adds support for 'repo.module-link.<path>', which will be
used for linking to submodules at paths matching one such entry.

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

1 files changed, 56 insertions, 0 deletions

diff --git a/ui-shared.c b/ui-shared.c
index 5aa9119..b736fca 100644
--- a/ui-shared.c
+++ b/ui-shared.c
@@ -503,6 +503,62 @@ void cgit_object_link(struct object *obj)
         reporevlink(page, name, NULL, NULL, ctx.qry.head, fullrev, NULL);
 }
 
+struct string_list_item *lookup_path(struct string_list *list,
+                                     const char *path)
+{
+        struct string_list_item *item;
+
+        while (path && path[0]) {
+                if ((item = string_list_lookup(list, path)))
+                        return item;
+                if (!(path = strchr(path, '/')))
+                        break;
+                path++;
+        }
+        return NULL;
+}
+
+void cgit_submodule_link(const char *class, char *path, const char *rev)
+{
+        struct string_list *list;
+        struct string_list_item *item;
+        char tail, *dir;
+        size_t len;
+
+        tail = 0;
+        list = &ctx.repo->submodules;
+        item = lookup_path(list, path);
+        if (!item) {
+                len = strlen(path);
+                tail = path[len - 1];
+                if (tail == '/') {
+                        path[len - 1] = 0;
+                        item = lookup_path(list, path);
+                }
+        }
+        html("<a ");
+        if (class)
+                htmlf("class='%s' ", class);
+        html("href='");
+        if (item) {
+                html_attr(fmt(item->util, rev));
+        } else if (ctx.repo->module_link) {
+                dir = strrchr(path, '/');
+                if (dir)
+                        dir++;
+                else
+                        dir = path;
+                html_attr(fmt(ctx.repo->module_link, dir, rev));
+        } else {
+                html("#");
+        }
+        html("'>");
+        html_txt(path);
+        html("</a>");
+        if (item && tail)
+                path[len - 1] = tail;
+}
+
 void cgit_print_date(time_t secs, const char *format, int local_time)
 {
         char buf[64];