forked from mia/Aegisub
d2d28401bd
Rather than loading both the local and user config files and saving to the local directory if an option is set, simply try to load the local config file, and if it exists switch to local mode and never even touch the user file. Originally committed to SVN as r6244.
112 lines
3.6 KiB
C++
112 lines
3.6 KiB
C++
// Copyright (c) 2010, Amar Takhar <verm@aegisub.org>
|
|
//
|
|
// Permission to use, copy, modify, and distribute this software for any
|
|
// purpose with or without fee is hereby granted, provided that the above
|
|
// copyright notice and this permission notice appear in all copies.
|
|
//
|
|
// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
|
|
// WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
|
|
// MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
|
|
// ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
|
|
// WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
|
|
// ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
|
|
// OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
|
|
//
|
|
// $Id$
|
|
|
|
/// @file option.h
|
|
/// @brief Public interface for option values.
|
|
/// @ingroup libaegisub
|
|
|
|
#pragma once
|
|
|
|
#ifndef LAGI_PRE
|
|
#include <fstream>
|
|
#include <map>
|
|
#endif
|
|
|
|
#include <libaegisub/exception.h>
|
|
|
|
namespace json {
|
|
class UnknownElement;
|
|
typedef std::map<std::string, UnknownElement> Object;
|
|
}
|
|
|
|
namespace agi {
|
|
|
|
DEFINE_BASE_EXCEPTION_NOINNER(OptionError,Exception)
|
|
DEFINE_SIMPLE_EXCEPTION_NOINNER(OptionErrorNotFound, OptionError, "options/not_found")
|
|
DEFINE_SIMPLE_EXCEPTION_NOINNER(OptionErrorDuplicateKey, OptionError, "options/dump/duplicate")
|
|
|
|
class OptionValue;
|
|
|
|
/// This is a cool trick: make a class un-copyable, in this case we always want
|
|
/// to update our *original* map, this will ensure that it is always updated in
|
|
/// every situation.
|
|
class OptionValueMap : public std::map<std::string,OptionValue*> {
|
|
private:
|
|
OptionValueMap(const OptionValueMap& x);
|
|
OptionValueMap& operator=(const OptionValueMap& x);
|
|
public:
|
|
OptionValueMap() {};
|
|
};
|
|
|
|
class Options {
|
|
public:
|
|
/// Options class settings.
|
|
enum OptionSetting {
|
|
NONE = 0x000, ///< Do nothing (default)
|
|
FLUSH_SKIP = 0x001 ///< Skip writing the config file to disk
|
|
};
|
|
|
|
private:
|
|
/// Internal OptionValueMap
|
|
OptionValueMap values;
|
|
|
|
/// @brief Create option object.
|
|
/// @param path Path to store
|
|
::json::Object CreateObject(std::string path);
|
|
|
|
/// User config (file that will be written to disk)
|
|
std::string config_file;
|
|
|
|
/// Settings.
|
|
const OptionSetting setting;
|
|
|
|
/// @brief Load a config file into the Options object.
|
|
/// @param config Config to load.
|
|
/// @param ignore_errors Log invalid entires in the option file and continue rather than throwing an exception
|
|
void LoadConfig(std::istream& stream, bool ignore_errors = false);
|
|
|
|
public:
|
|
/// @brief Constructor
|
|
/// @param file User config that will be loaded from and written back to.
|
|
/// @param default_config Default configuration.
|
|
Options(const std::string &file, const std::string &default_config, const OptionSetting setting=NONE);
|
|
|
|
/// Destructor
|
|
~Options();
|
|
|
|
/// @brief Get an option by name.
|
|
/// @param name Option to get.
|
|
/// Get an option value object by name throw an internal exception if the option is not found.
|
|
OptionValue* Get(const std::string &name);
|
|
|
|
/// @brief Next configuration file to load.
|
|
/// @param[in] src Stream to load from.
|
|
/// Load next config which will supersede any values from previous configs
|
|
/// can be called as many times as required, but only after ConfigDefault() and
|
|
/// before ConfigUser()
|
|
void ConfigNext(std::istream &stream);
|
|
|
|
/// @brief Set user config file.
|
|
/// Set the user configuration file and read options from it, closes all
|
|
/// possible config file loading and sets the file to write to.
|
|
void ConfigUser();
|
|
|
|
/// Write the user configuration to disk, throws an exception if something goes wrong.
|
|
void Flush();
|
|
};
|
|
|
|
} // namespace agi
|