mirror of https://github.com/odrling/Aegisub
109 lines
2.8 KiB
C++
109 lines
2.8 KiB
C++
// Copyright (c) 2010, Amar Takhar <verm@aegisub.org>
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//
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// Permission to use, copy, modify, and distribute this software for any
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// purpose with or without fee is hereby granted, provided that the above
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// copyright notice and this permission notice appear in all copies.
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//
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// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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// WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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// MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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// ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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// WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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// ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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// OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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/// @file io.cpp
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/// @brief Windows IO methods.
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/// @ingroup libaegisub
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#ifndef LAGI_PRE
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#include <sys/stat.h>
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#include <errno.h>
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#include <iostream>
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#include <fstream>
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#endif
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#include <libaegisub/access.h>
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#include <libaegisub/charset_conv_win.h>
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#include "libaegisub/io.h"
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#include "libaegisub/log.h"
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#include "libaegisub/util.h"
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#ifdef _WIN32
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#define snprintf sprintf_s
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#endif
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namespace {
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std::string make_temp_name(std::string const& filename) {
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char tmp[1024];
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snprintf(tmp, sizeof tmp, "_tmp_%lld", (long long)time(0));
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std::string::size_type pos = filename.rfind('.');
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if (pos == std::string::npos)
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return filename + tmp;
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return filename.substr(0, pos) + tmp + filename.substr(pos);
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}
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}
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namespace agi {
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namespace io {
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using agi::charset::ConvertW;
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#ifndef _WIN32
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#define ConvertW
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#endif
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std::ifstream* Open(const std::string &file, bool binary) {
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LOG_D("agi/io/open/file") << file;
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acs::CheckFileRead(file);
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std::ifstream *stream = new std::ifstream(ConvertW(file).c_str(), (binary ? std::ios::binary : std::ios::in));
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if (stream->fail()) {
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delete stream;
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throw IOFatal("Unknown fatal error as occurred");
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}
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return stream;
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}
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Save::Save(const std::string& file, bool binary)
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: file_name(file)
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, tmp_name(make_temp_name(file))
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{
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LOG_D("agi/io/save/file") << file;
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const std::string pwd = util::DirName(file);
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acs::CheckDirWrite(pwd);
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try {
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acs::CheckFileWrite(file);
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} catch (FileNotFoundError const&) {
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// If the file doesn't exist we create a 0 byte file, this so so
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// util::Rename will find it, and to let users know something went
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// wrong by leaving a 0 byte file.
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std::ofstream(ConvertW(file).c_str());
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}
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fp = new std::ofstream(ConvertW(tmp_name).c_str(), binary ? std::ios::binary : std::ios::out);
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if (!fp->good()) {
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delete fp;
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throw agi::FileNotAccessibleError("Could not create temporary file at: " + tmp_name);
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}
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}
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Save::~Save() {
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delete fp;
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util::Rename(tmp_name, file_name);
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}
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std::ofstream& Save::Get() {
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return *fp;
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}
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} // namespace io
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} // namespace agi
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