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/*
This file is part of Warzone 2100.
Copyright (C) 2024 Warzone 2100 Project
Warzone 2100 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.
Warzone 2100 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 Warzone 2100; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef _file_ext_h
#define _file_ext_h
#include "frame.h"
#include "file.h"
#include "physfs_ext.h"
template<class T, std::enable_if_t<sizeof(T) == sizeof(char), bool> = true>
bool loadFileToBufferVectorT(const char *pFileName, std::vector<T>& outputBuffer, bool hard_fail, bool appendNullCharacter = true)
{
if (WZ_PHYSFS_isDirectory(pFileName))
{
return false;
}
PHYSFS_file *pfile = openLoadFile(pFileName, hard_fail);
if (!pfile)
{
return false;
}
PHYSFS_sint64 filesize = PHYSFS_fileLength(pfile);
if (filesize < 0)
{
PHYSFS_close(pfile);
return false; // File size could not be determined. Is a directory?
}
if (!(filesize < static_cast<PHYSFS_sint64>(std::numeric_limits<PHYSFS_sint32>::max())))
{
PHYSFS_close(pfile);
ASSERT(filesize < static_cast<PHYSFS_sint64>(std::numeric_limits<PHYSFS_sint32>::max()), "\"%s\" filesize >= std::numeric_limits<PHYSFS_sint32>::max()", pFileName);
return false;
}
if (!(static_cast<PHYSFS_uint64>(filesize) < static_cast<PHYSFS_uint64>(std::numeric_limits<size_t>::max())))
{
PHYSFS_close(pfile);
ASSERT(static_cast<PHYSFS_uint64>(filesize) < static_cast<PHYSFS_uint64>(std::numeric_limits<size_t>::max()), "\"%s\" filesize >= std::numeric_limits<size_t>::max()", pFileName);
return false;
}
outputBuffer.clear();
outputBuffer.resize(static_cast<size_t>(filesize + ((appendNullCharacter) ? 1 : 0)));
/* Load the file data */
PHYSFS_sint64 length_read = WZ_PHYSFS_readBytes(pfile, outputBuffer.data(), static_cast<PHYSFS_uint32>(filesize));
if (length_read != filesize)
{
outputBuffer.clear();
PHYSFS_close(pfile);
debug(LOG_ERROR, "Reading %s short: %s", pFileName, WZ_PHYSFS_getLastError());
assert(false);
return false;
}
if (!PHYSFS_close(pfile))
{
outputBuffer.clear();
debug(LOG_ERROR, "Error closing %s: %s", pFileName, WZ_PHYSFS_getLastError());
assert(false);
return false;
}
if (appendNullCharacter)
{
outputBuffer[outputBuffer.size() - 1] = 0;
}
ASSERT(static_cast<PHYSFS_uint64>(filesize) <= static_cast<PHYSFS_uint64>(std::numeric_limits<UDWORD>::max()), "filesize exceeds std::numeric_limits<UDWORD>::max()");
return true;
}
#endif // _file_ext_h
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