input_stream: convert to C++ (internally)

1 files changed, 104 insertions, 0 deletions

diff --git a/src/InputInit.cxx b/src/InputInit.cxx
new file mode 100644
index 000000000..6714cc727
--- /dev/null
+++ b/src/InputInit.cxx
@@ -0,0 +1,104 @@
+/*
+ * Copyright (C) 2003-2013 The Music Player Daemon Project
+ * http://www.musicpd.org
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#include "config.h"
+#include "InputInit.hxx"
+#include "InputRegistry.hxx"
+#include "input_plugin.h"
+#include "conf.h"
+
+#include <assert.h>
+#include <string.h>
+
+static inline GQuark
+input_quark(void)
+{
+	return g_quark_from_static_string("input");
+}
+
+/**
+ * Find the "input" configuration block for the specified plugin.
+ *
+ * @param plugin_name the name of the input plugin
+ * @return the configuration block, or NULL if none was configured
+ */
+static const struct config_param *
+input_plugin_config(const char *plugin_name, GError **error_r)
+{
+	const struct config_param *param = NULL;
+
+	while ((param = config_get_next_param(CONF_INPUT, param)) != NULL) {
+		const char *name =
+			config_get_block_string(param, "plugin", NULL);
+		if (name == NULL) {
+			g_set_error(error_r, input_quark(), 0,
+				    "input configuration without 'plugin' name in line %d",
+				    param->line);
+			return NULL;
+		}
+
+		if (strcmp(name, plugin_name) == 0)
+			return param;
+	}
+
+	return NULL;
+}
+
+bool
+input_stream_global_init(GError **error_r)
+{
+	GError *error = NULL;
+
+	for (unsigned i = 0; input_plugins[i] != NULL; ++i) {
+		const struct input_plugin *plugin = input_plugins[i];
+
+		assert(plugin->name != NULL);
+		assert(*plugin->name != 0);
+		assert(plugin->open != NULL);
+
+		const struct config_param *param =
+			input_plugin_config(plugin->name, &error);
+		if (param == NULL && error != NULL) {
+			g_propagate_error(error_r, error);
+			return false;
+		}
+
+		if (!config_get_block_bool(param, "enabled", true))
+			/* the plugin is disabled in mpd.conf */
+			continue;
+
+		if (plugin->init == NULL || plugin->init(param, &error))
+			input_plugins_enabled[i] = true;
+		else {
+			g_propagate_prefixed_error(error_r, error,
+						   "Failed to initialize input plugin '%s': ",
+						   plugin->name);
+			return false;
+		}
+	}
+
+	return true;
+}
+
+void input_stream_global_finish(void)
+{
+	input_plugins_for_each_enabled(plugin)
+		if (plugin->finish != NULL)
+			plugin->finish();
+}