Add a repo-contents command

This can show available runtimes and applications.

Makefile.am

@@ -30,6 +30,7 @@ xdg_app_SOURCES = \
 	xdg-app-builtins-add-repo.c \
 	xdg-app-builtins-delete-repo.c \
 	xdg-app-builtins-list-repos.c \
+	xdg-app-builtins-repo-contents.c \
 	xdg-app-builtins-install.c \
 	xdg-app-builtins-update.c \
 	xdg-app-builtins-list.c \

xdg-app-builtins-repo-contents.c

@@ -0,0 +1,95 @@
+#include "config.h"
+
+#include <locale.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <string.h>
+
+#include "libgsystem.h"
+
+#include "xdg-app-builtins.h"
+#include "xdg-app-utils.h"
+
+static gboolean opt_show_details;
+static gboolean opt_only_runtimes;
+static gboolean opt_only_apps;
+
+static GOptionEntry options[] = {
+  { "show-details", 0, 0, G_OPTION_ARG_NONE, &opt_show_details, "Show arches and branches", NULL },
+  { "only-runtimes", 0, 0, G_OPTION_ARG_NONE, &opt_only_runtimes, "Show only runtimes", NULL },
+  { "only-apps", 0, 0, G_OPTION_ARG_NONE, &opt_only_apps, "Show only apps", NULL },
+  { NULL }
+};
+
+gboolean
+xdg_app_builtin_repo_contents (int argc, char **argv, GCancellable *cancellable, GError **error)
+{
+  gboolean ret = FALSE;
+  GOptionContext *context;
+  gs_unref_object XdgAppDir *dir = NULL;
+  gs_unref_object OstreeRepo *repo = NULL;
+  gs_unref_hashtable GHashTable *refs = NULL;
+  GHashTableIter iter;
+  gpointer key;
+  gs_unref_hashtable GHashTable *seen = NULL;
+
+  context = g_option_context_new (" - Show available runtimes and applications");
+
+  if (!xdg_app_option_context_parse (context, options, &argc, &argv, 0, &dir, cancellable, error))
+    goto out;
+
+  repo = xdg_app_dir_get_repo (dir);
+  if (!ostree_repo_list_refs (repo, NULL, &refs, cancellable, error))
+    goto out;
+
+  seen = g_hash_table_new_full (g_str_hash, g_str_equal, g_free, NULL);
+
+  g_hash_table_iter_init (&iter, refs);
+  while (g_hash_table_iter_next (&iter, &key, NULL))
+    {
+      const char *refspec = key;
+      gs_free char *remote = NULL;
+      gs_free char *ref = NULL;
+      char *name = NULL;
+      char *p;
+
+      if (!ostree_parse_refspec (refspec, &remote, &ref, error))
+        goto out;
+
+      if (g_str_has_prefix (ref, "runtime/") && !opt_only_apps)
+        {
+          name = g_strdup (ref + strlen ("runtime/"));
+          if (!opt_show_details)
+            {
+              p = strchr (name, '/');
+              if (p)
+                *p = 0;
+            }
+        }
+
+      if (g_str_has_prefix (ref, "app/") && !opt_only_runtimes)
+        {
+          name = g_strdup (ref + strlen ("app/"));
+          if (!opt_show_details)
+            {
+              p = strchr (name, '/');
+              if (p)
+                *p = 0;
+            }
+        }
+
+      if (name && !g_hash_table_contains (seen, name))
+        {
+          g_hash_table_add (seen, name);
+          g_print ("%s\n", name);
+        }
+    }
+
+  ret = TRUE;
+
+ out:
+  if (context)
+    g_option_context_free (context);
+
+  return ret;
+}

xdg-app-builtins.h

@@ -31,6 +31,7 @@ void usage_error (GOptionContext *context,
 BUILTINPROTO(add_repo);
 BUILTINPROTO(delete_repo);
 BUILTINPROTO(list_repos);
+BUILTINPROTO(repo_contents);
 BUILTINPROTO(install_runtime);
 BUILTINPROTO(update_runtime);
 BUILTINPROTO(list_runtimes);

xdg-app-main.c

@@ -22,6 +22,7 @@ static XdgAppCommand commands[] = {
   { "add-repo", xdg_app_builtin_add_repo },
   { "delete-repo", xdg_app_builtin_delete_repo },
   { "list-repos", xdg_app_builtin_list_repos },
+  { "repo-contents", xdg_app_builtin_repo_contents },
   { "install-runtime", xdg_app_builtin_install_runtime },
   { "update-runtime", xdg_app_builtin_update_runtime },
   { "list-runtimes", xdg_app_builtin_list_runtimes },