Aegisub/aegisub/libaegisub/common/option.cpp
Thomas Goyne d2d28401bd Change how local config mode works
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.
2012-01-08 01:35:56 +00:00

190 lines
5.4 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.cpp
/// @brief Option interface.
/// @ingroup libaegisub
#include "../config.h"
#include "libaegisub/option.h"
#ifndef LAGI_PRE
#include <cassert>
#include <fstream>
#include <map>
#include <memory>
#include <sstream>
#endif
#include "libaegisub/cajun/reader.h"
#include "libaegisub/cajun/writer.h"
#include "libaegisub/cajun/elements.h"
#include "libaegisub/access.h"
#include "libaegisub/io.h"
#include "libaegisub/log.h"
#include "libaegisub/option_value.h"
#include "option_visit.h"
namespace {
/// @brief Write an option to a json object
/// @param[out] obj Parent object
/// @param[in] path Path option should be stored in.
/// @param[in] value Value to write.
void put_option(json::Object &obj, const std::string &path, const json::UnknownElement &value) {
std::string::size_type pos = path.find('/');
// Not having a '/' denotes it is a leaf.
if (pos == std::string::npos) {
assert(obj.find(path) == obj.end());
obj[path] = value;
}
else {
put_option(
obj[path.substr(0, pos)],
path.substr(pos + 1),
value);
}
}
template<class T>
void put_array(json::Object &obj, const std::string &path, const char *element_key, std::vector<T> const& value) {
json::Array array;
for (typename std::vector<T>::const_iterator it = value.begin(); it != value.end(); ++it) {
array.push_back(json::Object());
static_cast<json::Object&>(array.back())[element_key] = *it;
}
put_option(obj, path, array);
}
}
namespace agi {
Options::Options(const std::string &file, const std::string& default_config, const OptionSetting setting)
: config_file(file), setting(setting) {
LOG_D("agi/options") << "New Options object";
std::istringstream stream(default_config);
LoadConfig(stream);
}
Options::~Options() {
if ((setting & FLUSH_SKIP) != FLUSH_SKIP) {
Flush();
}
for (OptionValueMap::iterator i = values.begin(); i != values.end(); i++) {
delete i->second;
}
}
void Options::ConfigNext(std::istream& stream) {
LoadConfig(stream);
}
void Options::ConfigUser() {
std::auto_ptr<std::istream> stream;
try {
stream.reset(agi::io::Open(config_file));
} catch (const acs::AcsNotFound&) {
return;
}
/// @todo Handle other errors such as parsing and notifying the user.
LoadConfig(*stream, true);
}
void Options::LoadConfig(std::istream& stream, bool ignore_errors) {
/// @todo Store all previously loaded configs in an array for bug report purposes,
/// this is just a temp stub.
json::UnknownElement config_root;
try {
json::Reader::Read(config_root, stream);
} catch (json::Reader::ParseException& e) {
LOG_E("option/load") << "json::ParseException: " << e.what() << ", Line/offset: " << e.m_locTokenBegin.m_nLine + 1 << '/' << e.m_locTokenBegin.m_nLineOffset + 1;
} catch (json::Exception& e) {
/// @todo Do something better here, maybe print the exact error
LOG_E("option/load") << "json::Exception: " << e.what();
}
ConfigVisitor config_visitor(values, "", ignore_errors);
config_root.Accept(config_visitor);
}
OptionValue* Options::Get(const std::string &name) {
OptionValueMap::iterator index;
if ((index = values.find(name)) != values.end())
return index->second;
LOG_E("option/get") << "agi::Options::Get Option not found: (" << name << ")";
throw OptionErrorNotFound("Option value not found: " + name);
}
void Options::Flush() {
json::Object obj_out;
for (OptionValueMap::const_iterator i = values.begin(); i != values.end(); ++i) {
switch (i->second->GetType()) {
case OptionValue::Type_String:
put_option(obj_out, i->first, i->second->GetString());
break;
case OptionValue::Type_Int:
put_option(obj_out, i->first, i->second->GetInt());
break;
case OptionValue::Type_Double:
put_option(obj_out, i->first, i->second->GetDouble());
break;
case OptionValue::Type_Colour:
put_option(obj_out, i->first, i->second->GetColour());
break;
case OptionValue::Type_Bool:
put_option(obj_out, i->first, i->second->GetBool());
break;
case OptionValue::Type_List_String:
put_array(obj_out, i->first, "string", i->second->GetListString());
break;
case OptionValue::Type_List_Int:
put_array(obj_out, i->first, "int", i->second->GetListInt());
break;
case OptionValue::Type_List_Double:
put_array(obj_out, i->first, "double", i->second->GetListDouble());
break;
case OptionValue::Type_List_Colour:
put_array(obj_out, i->first, "colour", i->second->GetListColour());
break;
case OptionValue::Type_List_Bool:
put_array(obj_out, i->first, "bool", i->second->GetListBool());
break;
}
}
json::Writer::Write(obj_out, io::Save(config_file).Get());
}
} // namespace agi