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This commit is contained in:
Igor Pavlov
2003-12-11 00:00:00 +00:00
committed by Kornel Lesiński
commit 8c1b5c7b7e
982 changed files with 118799 additions and 0 deletions
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134
7zip/Archive/Zip/ZipOut.cpp Executable file
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// ZipOut.cpp
#include "StdAfx.h"
#include "ZipOut.h"
#include "Common/StringConvert.h"
#include "Common/CRC.h"
#include "../../Common/OffsetStream.h"
namespace NArchive {
namespace NZip {
void COutArchive::Create(IOutStream *outStream)
{
m_Stream = outStream;
m_BasePosition = 0;
}
void COutArchive::MoveBasePosition(UINT32 distanceToMove)
{
m_BasePosition += distanceToMove; // test overflow
}
void COutArchive::PrepareWriteCompressedData(UINT16 fileNameLength)
{
m_LocalFileHeaderSize = sizeof(NFileHeader::CLocalBlockFull) + fileNameLength;
}
void COutArchive::WriteBytes(const void *buffer, UINT32 size)
{
UINT32 processedSize;
if(m_Stream->Write(buffer, size, &processedSize) != S_OK)
throw 0;
if(processedSize != size)
throw 0;
m_BasePosition += size;
}
void COutArchive::WriteLocalHeader(const CItem &item)
{
NFileHeader::CLocalBlockFull fileHeader;
fileHeader.Signature = NSignature::kLocalFileHeader;
NFileHeader::CLocalBlock &header = fileHeader.Header;
header.ExtractVersion.HostOS = item.ExtractVersion.HostOS;
header.ExtractVersion.Version = item.ExtractVersion.Version;
header.Flags = item.Flags;
header.CompressionMethod = item.CompressionMethod;
header.Time = item.Time;
header.FileCRC = item.FileCRC;
header.PackSize = item.PackSize;
header.UnPackSize = item.UnPackSize;
header.NameSize = item.Name.Length();
header.ExtraSize = item.LocalExtraSize; // test it;
m_Stream->Seek(m_BasePosition, STREAM_SEEK_SET, NULL);
WriteBytes(&fileHeader, sizeof(fileHeader));
WriteBytes((const char *)item.Name, header.NameSize);
MoveBasePosition(header.ExtraSize + header.PackSize);
m_Stream->Seek(m_BasePosition, STREAM_SEEK_SET, NULL);
}
void COutArchive::WriteCentralHeader(const CItem &item)
{
NFileHeader::CBlockFull fileHeader;
fileHeader.Signature = NSignature::kCentralFileHeader;
NFileHeader::CBlock &header = fileHeader.Header;
header.MadeByVersion.HostOS = item.MadeByVersion.HostOS;
header.MadeByVersion.Version = item.MadeByVersion.Version;
header.ExtractVersion.HostOS = item.ExtractVersion.HostOS;
header.ExtractVersion.Version = item.ExtractVersion.Version;
header.Flags = item.Flags;
header.CompressionMethod = item.CompressionMethod;
header.Time = item.Time;
header.FileCRC = item.FileCRC;
header.PackSize = item.PackSize;
header.UnPackSize = item.UnPackSize;
header.NameSize = item.Name.Length();
header.ExtraSize = item.CentralExtraSize; // test it;
header.CommentSize = item.CommentSize;
header.DiskNumberStart = 0;
header.InternalAttributes = item.InternalAttributes;
header.ExternalAttributes = item.ExternalAttributes;
header.LocalHeaderOffset = item.LocalHeaderPosition;
m_Stream->Seek(m_BasePosition, STREAM_SEEK_SET, NULL);
WriteBytes(&fileHeader, sizeof(fileHeader));
WriteBytes((const char *)item.Name, header.NameSize);
}
void COutArchive::WriteEndOfCentralDir(const COutArchiveInfo &archiveInfo)
{
CEndOfCentralDirectoryRecordFull fileHeader;
fileHeader.Signature = NSignature::kEndOfCentralDir;
CEndOfCentralDirectoryRecord &header = fileHeader.Header;
header.ThisDiskNumber = 0;
header.StartCentralDirectoryDiskNumber = 0;
header.NumEntriesInCentaralDirectoryOnThisDisk = archiveInfo.NumEntriesInCentaralDirectory;
header.NumEntriesInCentaralDirectory = archiveInfo.NumEntriesInCentaralDirectory;
header.CentralDirectorySize = archiveInfo.CentralDirectorySize;
header.CentralDirectoryStartOffset = archiveInfo.CentralDirectoryStartOffset;
header.CommentSize = archiveInfo.CommentSize;
m_Stream->Seek(m_BasePosition, STREAM_SEEK_SET, NULL);
WriteBytes(&fileHeader, sizeof(fileHeader));
}
void COutArchive::CreateStreamForCompressing(IOutStream **outStream)
{
COffsetOutStream *streamSpec = new COffsetOutStream;
CMyComPtr<IOutStream> tempStream(streamSpec);
streamSpec->Init(m_Stream, m_BasePosition + m_LocalFileHeaderSize);
*outStream = tempStream.Detach();
}
void COutArchive::SeekToPackedDataPosition()
{
m_Stream->Seek(m_BasePosition + m_LocalFileHeaderSize, STREAM_SEEK_SET, NULL);
}
void COutArchive::CreateStreamForCopying(ISequentialOutStream **outStream)
{
CMyComPtr<ISequentialOutStream> tempStream(m_Stream);
*outStream = tempStream.Detach();
}
}}