Aegisub/aegisub/libaegisub/common/json.cpp

74 lines
2.1 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 json.cpp
/// @brief Parse JSON files and return json::UnknownElement
/// @ingroup libaegisub io
#ifdef LAGI_PRE
#include <fstream>
#include <strstream>
#endif
#include "libaegisub/access.h"
#include "libaegisub/io.h"
#include "libaegisub/json.h"
namespace agi {
namespace json_util {
json::UnknownElement parse(std::istream *stream) {
json::UnknownElement root;
try {
json::Reader::Read(root, *stream);
} catch (json::Reader::ParseException& e) {
std::cout << "json::ParseException: " << e.what() << ", Line/offset: " << e.m_locTokenBegin.m_nLine + 1 << '/' << e.m_locTokenBegin.m_nLineOffset + 1 << std::endl << std::endl;
} catch (json::Exception& e) {
/// @todo Do something better here, maybe print the exact error
std::cout << "json::Exception: " << e.what() << std::endl;
}
delete stream;
return root;
}
json::UnknownElement file(const std::string file) {
return parse(io::Open(file));
}
json::UnknownElement file(const std::string file, const std::string &default_config) {
try {
return parse(io::Open(file));
// We only want to catch this single error as anything else could
// reflect a deeper problem. ie, failed i/o, wrong permissions etc.
} catch (const acs::AcsNotFound&) {
std::istringstream stream(default_config);
return parse(&stream);
}
}
} // namespace json_util
} // namespace agi