Add page 'ls_cache'

This new page will list all entries found in the current cache, which is
useful when reviewing the new cache implementation. There are no links to
the new page, but it's reachable by adding 'p=ls_cache' to any cgit url.

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

cmd.c

@@ -8,6 +8,8 @@
 
 #include "cgit.h"
 #include "cmd.h"
+#include "cache.h"
+#include "ui-shared.h"
 #include "ui-blob.h"
 #include "ui-commit.h"
 #include "ui-diff.h"
@@ -35,17 +37,25 @@ static void diff_fn(struct cgit_context *ctx)
 	cgit_print_diff(ctx->qry.sha1, ctx->qry.sha2, ctx->qry.path);
 }
 
-static void repolist_fn(struct cgit_context *ctx)
-{
-	cgit_print_repolist();
-}
-
 static void log_fn(struct cgit_context *ctx)
 {
 	cgit_print_log(ctx->qry.sha1, ctx->qry.ofs, ctx->cfg.max_commit_count,
 		       ctx->qry.grep, ctx->qry.search, ctx->qry.path, 1);
 }
 
+static void ls_cache_fn(struct cgit_context *ctx)
+{
+	ctx->page.mimetype = "text/plain";
+	ctx->page.filename = "ls-cache.txt";
+	cgit_print_http_headers(ctx);
+	cache_ls(ctx->cfg.cache_root);
+}
+
+static void repolist_fn(struct cgit_context *ctx)
+{
+	cgit_print_repolist();
+}
+
 static void patch_fn(struct cgit_context *ctx)
 {
 	cgit_print_patch(ctx->qry.sha1);
@@ -88,6 +98,7 @@ struct cgit_cmd *cgit_get_cmd(struct cgit_context *ctx)
 		def_cmd(commit, 1, 1),
 		def_cmd(diff, 1, 1),
 		def_cmd(log, 1, 1),
+		def_cmd(ls_cache, 0, 0),
 		def_cmd(patch, 1, 0),
 		def_cmd(refs, 1, 1),
 		def_cmd(repolist, 0, 0),