Add command dispatcher

This simplifies the code in cgit.c and makes it easier to extend cgit with
new pages/commands.

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

1 files changed, 101 insertions, 0 deletions

diff --git a/cmd.c b/cmd.c
new file mode 100644
index 0000000..489a11c
--- /dev/null
+++ b/cmd.c
@@ -0,0 +1,101 @@
+/* cmd.c: the cgit command dispatcher
+ *
+ * Copyright (C) 2008 Lars Hjemli
+ *
+ * Licensed under GNU General Public License v2
+ *   (see COPYING for full license text)
+ */
+
+#include "cgit.h"
+#include "cmd.h"
+
+static void blob_fn(struct cgit_context *ctx)
+{
+        cgit_print_blob(ctx->qry.sha1, ctx->qry.path);
+}
+
+static void commit_fn(struct cgit_context *ctx)
+{
+        cgit_print_commit(ctx->qry.sha1);
+}
+
+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 patch_fn(struct cgit_context *ctx)
+{
+        cgit_print_patch(ctx->qry.sha1);
+}
+
+static void refs_fn(struct cgit_context *ctx)
+{
+        cgit_print_refs();
+}
+
+static void snapshot_fn(struct cgit_context *ctx)
+{
+        cgit_print_snapshot(ctx->qry.head, ctx->qry.sha1,
+                            cgit_repobasename(ctx->repo->url), ctx->qry.path,
+                            ctx->repo->snapshots);
+}
+
+static void summary_fn(struct cgit_context *ctx)
+{
+        cgit_print_summary();
+}
+
+static void tag_fn(struct cgit_context *ctx)
+{
+        cgit_print_tag(ctx->qry.sha1);
+}
+
+static void tree_fn(struct cgit_context *ctx)
+{
+        cgit_print_tree(ctx->qry.sha1, ctx->qry.path);
+}
+
+#define def_cmd(name, want_repo, want_layout) \
+        {#name, name##_fn, want_repo, want_layout}
+
+struct cgit_cmd *cgit_get_cmd(struct cgit_context *ctx)
+{
+        static struct cgit_cmd cmds[] = {
+                def_cmd(blob, 1, 0),
+                def_cmd(commit, 1, 1),
+                def_cmd(diff, 1, 1),
+                def_cmd(log, 1, 1),
+                def_cmd(patch, 1, 0),
+                def_cmd(refs, 1, 1),
+                def_cmd(repolist, 0, 0),
+                def_cmd(snapshot, 1, 0),
+                def_cmd(summary, 1, 1),
+                def_cmd(tag, 1, 1),
+                def_cmd(tree, 1, 1),
+        };
+        int i;
+
+        if (ctx->qry.page == NULL) {
+                if (ctx->repo)
+                        ctx->qry.page = "summary";
+                else
+                        ctx->qry.page = "repolist";
+        }
+
+        for(i = 0; i < sizeof(cmds)/sizeof(*cmds); i++)
+                if (!strcmp(ctx->qry.page, cmds[i].name))
+                        return &cmds[i];
+        return NULL;
+}