Config*: move to config/

src/config/ConfigGlobal.cxx

@@ -0,0 +1,175 @@
+/*
+ * Copyright (C) 2003-2014 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 "ConfigGlobal.hxx"
+#include "ConfigParser.hxx"
+#include "ConfigData.hxx"
+#include "ConfigFile.hxx"
+#include "ConfigPath.hxx"
+#include "ConfigError.hxx"
+#include "fs/Path.hxx"
+#include "fs/AllocatedPath.hxx"
+#include "util/Error.hxx"
+#include "system/FatalError.hxx"
+#include "Log.hxx"
+
+#include <stdlib.h>
+
+static ConfigData config_data;
+
+void config_global_finish(void)
+{
+	for (auto i : config_data.params)
+		delete i;
+}
+
+void config_global_init(void)
+{
+}
+
+bool
+ReadConfigFile(Path path, Error &error)
+{
+	return ReadConfigFile(config_data, path, error);
+}
+
+static void
+Check(const config_param *param)
+{
+	if (!param->used)
+		/* this whole config_param was not queried at all -
+		   the feature might be disabled at compile time?
+		   Silently ignore it here. */
+		return;
+
+	for (const auto &i : param->block_params) {
+		if (!i.used)
+			FormatWarning(config_domain,
+				      "option '%s' on line %i was not recognized",
+				      i.name.c_str(), i.line);
+	}
+}
+
+void config_global_check(void)
+{
+	for (auto i : config_data.params)
+		for (const config_param *p = i; p != nullptr; p = p->next)
+			Check(p);
+}
+
+const struct config_param *
+config_get_next_param(ConfigOption option, const struct config_param * last)
+{
+	config_param *param = last != nullptr
+		? last->next
+		: config_data.params[unsigned(option)];
+	if (param != nullptr)
+		param->used = true;
+	return param;
+}
+
+const char *
+config_get_string(ConfigOption option, const char *default_value)
+{
+	const struct config_param *param = config_get_param(option);
+
+	if (param == nullptr)
+		return default_value;
+
+	return param->value.c_str();
+}
+
+AllocatedPath
+config_get_path(ConfigOption option, Error &error)
+{
+	const struct config_param *param = config_get_param(option);
+	if (param == nullptr)
+		return AllocatedPath::Null();
+
+	return config_parse_path(param, error);
+}
+
+AllocatedPath
+config_parse_path(const struct config_param *param, Error & error)
+{
+	AllocatedPath path = ParsePath(param->value.c_str(), error);
+	if (gcc_unlikely(path.IsNull()))
+		error.FormatPrefix("Invalid path at line %i: ",
+				   param->line);
+
+	return path;
+}
+
+unsigned
+config_get_unsigned(ConfigOption option, unsigned default_value)
+{
+	const struct config_param *param = config_get_param(option);
+	long value;
+	char *endptr;
+
+	if (param == nullptr)
+		return default_value;
+
+	value = strtol(param->value.c_str(), &endptr, 0);
+	if (*endptr != 0 || value < 0)
+		FormatFatalError("Not a valid non-negative number in line %i",
+				 param->line);
+
+	return (unsigned)value;
+}
+
+unsigned
+config_get_positive(ConfigOption option, unsigned default_value)
+{
+	const struct config_param *param = config_get_param(option);
+	long value;
+	char *endptr;
+
+	if (param == nullptr)
+		return default_value;
+
+	value = strtol(param->value.c_str(), &endptr, 0);
+	if (*endptr != 0)
+		FormatFatalError("Not a valid number in line %i", param->line);
+
+	if (value <= 0)
+		FormatFatalError("Not a positive number in line %i",
+				 param->line);
+
+	return (unsigned)value;
+}
+
+bool
+config_get_bool(ConfigOption option, bool default_value)
+{
+	const struct config_param *param = config_get_param(option);
+	bool success, value;
+
+	if (param == nullptr)
+		return default_value;
+
+	success = get_bool(param->value.c_str(), &value);
+	if (!success)
+		FormatFatalError("Expected boolean value (yes, true, 1) or "
+				 "(no, false, 0) on line %i\n",
+				 param->line);
+
+	return value;
+}