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/*
** ClanLib SDK
** Copyright (c) 1997-2005 The ClanLib Team
**
** This software is provided 'as-is', without any express or implied
** warranty. In no event will the authors be held liable for any damages
** arising from the use of this software.
**
** Permission is granted to anyone to use this software for any purpose,
** including commercial applications, and to alter it and redistribute it
** freely, subject to the following restrictions:
**
** 1. The origin of this software must not be misrepresented; you must not
** claim that you wrote the original software. If you use this software
** in a product, an acknowledgment in the product documentation would be
** appreciated but is not required.
** 2. Altered source versions must be plainly marked as such, and must not be
** misrepresented as being the original software.
** 3. This notice may not be removed or altered from any source distribution.
**
** Note: Some of the libraries ClanLib may link to may have additional
** requirements or restrictions.
**
** File Author(s):
**
** Magnus Norddahl
** (if your name is missing here, please add it)
*/
#include "Core/precomp.h"
#include "zip_file_header.h"
#include "API/Core/IOData/inputsource.h"
#include "API/Core/IOData/outputsource.h"
#include "zip_compression_method.h"
#include "zip_flags.h"
/////////////////////////////////////////////////////////////////////////////
// CL_Zip_FileHeader construction:
CL_Zip_FileHeader::CL_Zip_FileHeader()
{
signature = 0x02014b50;
version_needed_to_extract = 20;
version_made_by = 0;
general_purpose_bit_flag = CL_ZIP_CRC32_IN_FILE_DESCRIPTOR; //turn on bit 3 to indicate our CRC and filesizes won't
//be valid until we add it after the actual file
compression_method = zip_compress_deflate;
last_mod_file_time = 0;
last_mod_file_date = 0;
disk_number_start = 0;
crc32 = 0;
compressed_size = 0;
uncompressed_size = 0;
internal_file_attributes = 0;
external_file_attributes = 0;
}
CL_Zip_FileHeader::~CL_Zip_FileHeader()
{
}
/////////////////////////////////////////////////////////////////////////////
// CL_Zip_FileHeader attributes:
/////////////////////////////////////////////////////////////////////////////
// CL_Zip_FileHeader operations:
void CL_Zip_FileHeader::load(CL_InputSource *input)
{
signature = input->read_int32();
if (signature != 0x02014b50)
{
throw CL_Error("Incorrect File Header signature");
}
version_made_by = input->read_int16();
version_needed_to_extract = input->read_int16();
general_purpose_bit_flag = input->read_int16();
compression_method = input->read_int16();
last_mod_file_time = input->read_int16();
last_mod_file_date = input->read_int16();
crc32 = input->read_int32();
compressed_size = input->read_int32();
uncompressed_size = input->read_int32();
file_name_length = input->read_int16();
extra_field_length = input->read_int16();
file_comment_length = input->read_int16();
disk_number_start = input->read_int16();
internal_file_attributes = input->read_int16();
external_file_attributes = input->read_int32();
relative_offset_of_local_header = input->read_int32();
filename.resize(file_name_length);
char *str1 = new char[file_name_length];
char *str2 = new char[extra_field_length];
char *str3 = new char[file_comment_length];
try
{
input->read(str1, file_name_length);
input->read(str2, extra_field_length);
input->read(str3, file_comment_length);
filename = std::string(str1, file_name_length);
extra_field = std::string(str2, extra_field_length);
file_comment = std::string(str3, file_comment_length);
delete[] str1;
delete[] str2;
delete[] str3;
}
catch (...)
{
delete[] str1;
delete[] str2;
delete[] str3;
throw;
}
}
void CL_Zip_FileHeader::save(CL_OutputSource *output)
{
output->write_int32(signature);
output->write_int16(version_made_by);
output->write_int16(version_needed_to_extract);
output->write_int16(general_purpose_bit_flag);
output->write_int16(compression_method);
output->write_int16(last_mod_file_time);
output->write_int16(last_mod_file_date);
output->write_int32(crc32);
output->write_int32(compressed_size);
output->write_int32(uncompressed_size);
output->write_int16(filename.size());
output->write_int16(extra_field.size());
output->write_int16(file_comment.size());
output->write_int16(disk_number_start);
output->write_int16(internal_file_attributes);
output->write_int32(external_file_attributes);
output->write_int32(relative_offset_of_local_header);
output->write(filename.data(), filename.size());
output->write(extra_field.data(), extra_field.size());
output->write(file_comment.data(), file_comment.size());
}
/////////////////////////////////////////////////////////////////////////////
// CL_Zip_FileHeader implementation:
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