[PATCH 1/2] Read "cgit.*" settings from gitconfig.

Allow to override cgit settings directly using git config -- this
is especially useful for gitolite, as it works without having to export
multiple options by hand.

The gitconfig section is "cgit", in contrast to the normal "repo" key used
throughout normal cgit. This is to avoid possible future name clashes.

Patch based on: http://hjemli.net/pipermail/cgit/2011-November/000428.html
---
 cgit.c      |    3 +++
 cgit.h      |    1 +
 scan-tree.c |   19 +++++++++++++++----
 3 files changed, 19 insertions(+), 4 deletions(-)

diff --git a/cgit.c b/cgit.c
index 1ec02e7..910bf1d 100644
--- a/cgit.c
+++ b/cgit.c
@@ -183,6 +183,8 @@ void config_cb(const char *name, const char *value)
 		ctx.cfg.enable_subject_links = atoi(value);
 	else if (!strcmp(name, "enable-tree-linenumbers"))
 		ctx.cfg.enable_tree_linenumbers = atoi(value);
+	else if (!strcmp(name, "enable-git-config"))
+		ctx.cfg.enable_git_config = atoi(value);
 	else if (!strcmp(name, "max-stats"))
 		ctx.cfg.max_stats = cgit_find_stats_period(value, NULL);
 	else if (!strcmp(name, "cache-size"))
@@ -348,6 +350,7 @@ static void prepare_context(struct cgit_context *ctx)
 	ctx->cfg.enable_gitweb_section = 1;
 	ctx->cfg.enable_http_clone = 1;
 	ctx->cfg.enable_tree_linenumbers = 1;
+	ctx->cfg.enable_git_config = 0;
 	ctx->cfg.max_repo_count = 50;
 	ctx->cfg.max_commit_count = 50;
 	ctx->cfg.max_lock_attempts = 5;
diff --git a/cgit.h b/cgit.h
index 79ba7ad..4ac6f80 100644
--- a/cgit.h
+++ b/cgit.h
@@ -211,6 +211,7 @@ struct cgit_config {
 	int enable_remote_branches;
 	int enable_subject_links;
 	int enable_tree_linenumbers;
+	int enable_git_config;
 	int local_time;
 	int max_atom_items;
 	int max_repo_count;
diff --git a/scan-tree.c b/scan-tree.c
index 6d1941e..7e711d5 100644
--- a/scan-tree.c
+++ b/scan-tree.c
@@ -67,7 +67,14 @@ static int gitweb_config(const char *key, const char *value, void *cb)
 	return 0;
 }
 
+static int cgit_repo_config(const char *key, const char *value, void *cb)
+{
+	if (!prefixcmp(key, "cgit.")) {
+		config_fn(repo, key + 5, value);
+	}
 
+	return 0;
+}
 
 static char *xstrrchr(char *s, char *from, int c)
 {
@@ -166,10 +173,14 @@ static void add_repo(const char *base, const char *path, repo_config_fn fn)
 		}
 	}
 
-	p = fmt("%s/cgitrc", path);
-	if (!stat(p, &st)) {
-		config_fn = fn;
-		parse_configfile(xstrdup(p), &repo_config);
+	config_fn = fn;
+	if (ctx.cfg.enable_git_config) {
+		git_config_from_file(cgit_repo_config, fmt("%s/config", path), NULL);
+	} else {
+		p = fmt("%s/cgitrc", path);
+		if (!stat(p, &st)) {
+			parse_configfile(xstrdup(p), &repo_config);
+		}
 	}
 
 	free(rel);
-- 
1.7.8.6