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/*
* This file is part of the TrinityCore Project. See AUTHORS file for Copyright information
*
* 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, see <http://www.gnu.org/licenses/>.
*/
#include "cascfile.h"
#include <CascLib.h>
#include <cstdio>
CASCFile::CASCFile(std::shared_ptr<CASC::Storage const> casc, const char* filename, bool warnNoExist /*= true*/) :
eof(false),
buffer(nullptr),
pointer(0),
size(0)
{
std::unique_ptr<CASC::File> file(casc->OpenFile(filename, CASC_LOCALE_ALL_WOW, false));
if (!file)
{
if (warnNoExist || GetCascError() != ERROR_FILE_NOT_FOUND)
fprintf(stderr, "Can't open %s: %s\n", filename, CASC::HumanReadableCASCError(GetCascError()));
eof = true;
return;
}
init(file.get(), filename);
}
CASCFile::CASCFile(std::shared_ptr<CASC::Storage const> casc, uint32 fileDataId, std::string const& description, bool warnNoExist /*= true*/) :
eof(false),
buffer(nullptr),
pointer(0),
size(0)
{
std::unique_ptr<CASC::File> file(casc->OpenFile(fileDataId, CASC_LOCALE_ALL_WOW, false));
if (!file)
{
if (warnNoExist || GetCascError() != ERROR_FILE_NOT_FOUND)
fprintf(stderr, "Can't open %s: %s\n", description.c_str(), CASC::HumanReadableCASCError(GetCascError()));
eof = true;
return;
}
init(file.get(), description.c_str());
}
void CASCFile::init(CASC::File* file, const char* description)
{
int64 fileSize = file->GetSize();
if (fileSize == -1)
{
fprintf(stderr, "Can't open %s, failed to get size: %s!\n", description, CASC::HumanReadableCASCError(GetCascError()));
eof = true;
return;
}
size = fileSize;
uint32 read = 0;
buffer = new char[size];
if (!file->ReadFile(buffer, size, &read) || size != read)
{
fprintf(stderr, "Can't read %s, size=%u read=%u: %s\n", description, uint32(size), uint32(read), CASC::HumanReadableCASCError(GetCascError()));
eof = true;
return;
}
}
size_t CASCFile::read(void* dest, size_t bytes)
{
if (eof)
return 0;
size_t rpos = pointer + bytes;
if (rpos > size)
{
bytes = size - pointer;
eof = true;
}
memcpy(dest, &(buffer[pointer]), bytes);
pointer = rpos;
return bytes;
}
void CASCFile::seek(int offset)
{
pointer = offset;
eof = (pointer >= size);
}
void CASCFile::seekRelative(int offset)
{
pointer += offset;
eof = (pointer >= size);
}
void CASCFile::close()
{
delete[] buffer;
buffer = nullptr;
eof = true;
}
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