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// tempfile.cpp
// this file is part of Context Free
// ---------------------
// Copyright (C) 2006-2008 Mark Lentczner - markl@glyphic.com
// Copyright (C) 2013 John Horigan - john@glyphic.com
//
// 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
//
// Mark Lentczner can be contacted at markl@glyphic.com or at
// Mark Lentczner, 1209 Villa St., Mountain View, CA 94041-1123, USA
//
// John Horigan can be contacted at john@glyphic.com or at
// John Horigan, 1209 Villa St., Mountain View, CA 94041-1123, USA
//
//
#include "tempfile.h"
#ifndef _WIN32
#include <unistd.h>
#endif
#include <iostream>
#include <cassert>
AbstractSystem::ostr_ptr
TempFile::forWrite()
{
if (mWritten)
mSystem->message("TempFile::forWrite already wrote to, " FileFormat "\n", mPath.c_str());
mWritten = true;
if (mNum > 0)
mSystem->message("Writing %s temp file %d", type().c_str(), mNum);
else
mSystem->message("Writing %s temp file", type().c_str());
return mSystem->tempFileForWrite(mType, mPath);
}
AbstractSystem::istr_ptr
TempFile::forRead()
{
if (!mWritten)
mSystem->message("TempFile::forRead temp file never written, " FileFormat "\n", mPath.c_str());
mSystem->message("Reading %s temp file %d", type().c_str(), mNum);
return mSystem->tempFileForRead(mPath);
}
const std::string&
TempFile::type() const
{
static const std::string typeStrings[AbstractSystem::NumberofTempTypes] = {
"shapes", "expansion", "merge", "movie"
};
assert(mType >= 0 && mType < AbstractSystem::NumberofTempTypes);
return typeStrings[mType];
}
TempFile::TempFile(AbstractSystem* system, AbstractSystem::TempType type, int num)
: mSystem(system), mType(type), mNum(num), mWritten(false)
{ }
TempFile::TempFile(TempFile&& from) noexcept
: mSystem(from.mSystem), mPath(std::move(from.mPath)), mType(std::move(from.mType)),
mNum(from.mNum), mWritten(from.mWritten)
{
// Prevent old TempFile from triggering an unlink
from.mWritten = false;
from.mPath.clear();
}
TempFile&
TempFile::operator=(TempFile&& from) noexcept
{
if (this == &from) return *this;
if (mWritten && mPath.length())
erase();
mSystem = from.mSystem;
mPath = std::move(from.mPath);
mType = from.mType;
mNum = from.mNum;
mWritten = from.mWritten;
// Prevent old TempFile from triggering an unlink
from.mWritten = false;
from.mPath.clear();
return *this;
}
TempFile::~TempFile()
{
if (mWritten && mPath.length())
erase();
}
void
TempFile::erase()
{
if (mNum > 0)
mSystem->message("Deleting %s temp file %d", type().c_str(), mNum);
else
mSystem->message("Deleting %s temp file", type().c_str());
errno = 0;
if (mSystem->deleteTempFile(mPath))
mSystem->message("Failed to delete " FileFormat ", %d", mPath.c_str(), errno);
}
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