[libgdata] demos: Add youtube-cli demo

[Philip Withnall <pwithnall src gnome org>]

commit d6ddcbfe28f236f3f6a17fd980f03b2306135ec8
Author: Philip Withnall <philip tecnocode co uk>
Date:   Tue Apr 14 00:50:19 2015 +0100

    demos: Add youtube-cli demo
    
    This is a simple demo to search for YouTube videos on the command line.

 Makefile.am                 |   29 +++++++++++-
 demos/youtube/youtube-cli.c |  111 +++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 139 insertions(+), 1 deletions(-)
---
diff --git a/Makefile.am b/Makefile.am
index db6d852..964ac4b 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -615,7 +615,7 @@ CODE_COVERAGE_DIRECTORY = $(top_builddir)/gdata
 CODE_COVERAGE_LCOV_OPTIONS = --base-directory $(abs_top_srcdir)
 
 # Demo programs
-noinst_PROGRAMS =
+noinst_PROGRAMS = demos/youtube/youtube-cli
 
 if ENABLE_GOA
 noinst_PROGRAMS += demos/docs-list/docs-list
@@ -711,6 +711,33 @@ demos_freebase_freebase_cli_LDADD = \
        $(AM_LDADD) \
        $(NULL)
 
+demos_youtube_youtube_cli_SOURCES = \
+       demos/youtube/youtube-cli.c  \
+       $(NULL)
+
+demos_youtube_youtube_cli_CPPFLAGS = \
+       -I$(top_srcdir)/ \
+       -I$(top_srcdir)/gdata \
+       -DG_LOG_DOMAIN=\"youtube\" \
+       -DLIBGDATA_DISABLE_DEPRECATED \
+       $(DISABLE_DEPRECATED) \
+       $(AM_CPPFLAGS) \
+       $(NULL)
+
+demos_youtube_youtube_cli_CFLAGS = \
+       $(WARN_CFLAGS) \
+       $(GDATA_CFLAGS) \
+       $(GNOME_CFLAGS) \
+       $(AM_CFLAGS) \
+       $(NULL)
+
+demos_youtube_youtube_cli_LDADD = \
+       $(top_builddir)/gdata/libgdata.la \
+       $(GDATA_LIBS) \
+       $(GNOME_LIBS) \
+       $(AM_LDADD) \
+       $(NULL)
+
 # Cleaning
 EXTRA_DIST += \
        autogen.sh              \
diff --git a/demos/youtube/youtube-cli.c b/demos/youtube/youtube-cli.c
new file mode 100644
index 0000000..7bb23b4
--- /dev/null
+++ b/demos/youtube/youtube-cli.c
@@ -0,0 +1,111 @@
+/* -*- Mode: C; indent-tabs-mode: t; c-basic-offset: 8; tab-width: 8 -*- */
+/*
+ * GData Client
+ * Copyright (C) 2015 Philip Withnall <philip tecnocode co uk>
+ *
+ * GData Client is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * GData Client is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with GData Client.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <gdata/gdata.h>
+#include <locale.h>
+#include <string.h>
+
+#define DEVELOPER_KEY 
"AI39si7Me3Q7zYs6hmkFvpRBD2nrkVjYYsUO5lh_3HdOkGRc9g6Z4nzxZatk_aAo2EsA21k7vrda0OO6oFg2rnhMedZXPyXoEw"
+
+static int
+print_usage (char *argv[])
+{
+       g_printerr ("%s: Usage — %s search <term>\n", argv[0], argv[0]);
+       return -1;
+}
+
+static int
+command_search (char *argv[])
+{
+       GDataYouTubeService *service = NULL;
+       GDataYouTubeQuery *query = NULL;
+       GDataFeed *feed = NULL;
+       GList *entries;
+       GError *error = NULL;
+       gint retval = 0;
+
+       service = gdata_youtube_service_new (DEVELOPER_KEY, NULL);
+       query = gdata_youtube_query_new (argv[2]);
+       feed = gdata_youtube_service_query_videos (service, GDATA_QUERY (query),
+                                                  NULL, NULL, NULL, &error);
+
+       if (error != NULL) {
+               g_printerr ("%s: Error querying YouTube: %s\n",
+                           argv[0], error->message);
+               g_error_free (error);
+               retval = 1;
+               goto done;
+       }
+
+       /* Print results. */
+       for (entries = gdata_feed_get_entries (feed); entries != NULL;
+            entries = entries->next) {
+               GDataYouTubeVideo *video;
+               const gchar *title, *player_uri;
+
+               video = GDATA_YOUTUBE_VIDEO (entries->data);
+               title = gdata_entry_get_title (GDATA_ENTRY (video));
+               player_uri = gdata_youtube_video_get_player_uri (video);
+
+               g_print ("%s — %s\n", player_uri, title);
+       }
+
+       if (gdata_feed_get_entries (feed) == NULL) {
+               g_print ("No results.\n");
+       }
+
+done:
+       g_clear_object (&feed);
+       g_clear_object (&query);
+       g_clear_object (&service);
+
+       return retval;
+}
+
+static const struct {
+       const gchar *command;
+       int (*handler_fn) (char **argv);
+} command_handlers[] = {
+       { "search", command_search },
+};
+
+int
+main (int argc, char *argv[])
+{
+       guint i;
+       gint retval = -1;
+
+       setlocale (LC_ALL, "");
+
+       if (argc < 3) {
+               return print_usage (argv);
+       }
+
+       for (i = 0; i < G_N_ELEMENTS (command_handlers); i++) {
+               if (strcmp (argv[1], command_handlers[i].command) == 0) {
+                       retval = command_handlers[i].handler_fn (argv);
+               }
+       }
+
+       if (retval == -1) {
+               retval = print_usage (argv);
+       }
+
+       return retval;
+}