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| author | Tomas Bzatek <tbzatek@users.sourceforge.net> | 2008-06-08 11:04:43 +0200 |
|---|---|---|
| committer | Tomas Bzatek <tbzatek@users.sourceforge.net> | 2008-06-08 11:04:43 +0200 |
| commit | 16f738ecee689c6feb2acb7e4ef4d9bb4144ae7d (patch) | |
| tree | 3d22f54f7298f81b18ed66d05a62fa8bfab359ab /zip/ZipArchive/ZipCompressor.cpp | |
| download | tuxcmd-modules-16f738ecee689c6feb2acb7e4ef4d9bb4144ae7d.tar.xz | |
Initial commitv0.6.36release-0.6.36-dev
Diffstat (limited to 'zip/ZipArchive/ZipCompressor.cpp')
| -rw-r--r-- | zip/ZipArchive/ZipCompressor.cpp | 104 |
1 files changed, 104 insertions, 0 deletions
diff --git a/zip/ZipArchive/ZipCompressor.cpp b/zip/ZipArchive/ZipCompressor.cpp new file mode 100644 index 0000000..771b214 --- /dev/null +++ b/zip/ZipArchive/ZipCompressor.cpp @@ -0,0 +1,104 @@ +////////////////////////////////////////////////////////////////////////////////
+// This source file is part of the ZipArchive library source distribution and
+// is Copyrighted 2000 - 2007 by Artpol Software - Tadeusz Dracz
+//
+// 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.
+//
+// For the licensing details refer to the License.txt file.
+//
+// Web Site: http://www.artpol-software.com
+////////////////////////////////////////////////////////////////////////////////
+
+#include "stdafx.h"
+#include "ZipCompressor.h"
+#include "BytesWriter.h"
+#include "DeflateCompressor.h"
+
+using namespace ZipArchiveLib;
+
+CZipCompressor* CZipCompressor::CreateCompressor(WORD uMethod, CZipStorage* pStorage)
+{
+ if (uMethod == methodStore || uMethod == methodDeflate)
+ return new CDeflateCompressor(pStorage);
+ return NULL;
+}
+
+void CZipCompressor::UpdateFileCrc(const void *pBuffer, DWORD uSize)
+{
+ m_pFile->m_uCrc32 = zarch_crc32(m_pFile->m_uCrc32, (zarch_Bytef*)pBuffer, uSize);
+}
+
+void CZipCompressor::UpdateCrc(const void *pBuffer, DWORD uSize)
+{
+ m_uCrc32 = zarch_crc32(m_uCrc32, (zarch_Bytef*)pBuffer, uSize);
+}
+
+void CZipCompressor::UpdateOptions(const COptionsMap& optionsMap)
+{
+ const COptions* pOptions = GetOptions();
+ if (pOptions == NULL)
+ return;
+ const COptions* pNewOptions = optionsMap.Get(pOptions->GetType());
+ if (pNewOptions != NULL)
+ UpdateOptions(pNewOptions);
+}
+
+void CZipCompressor::InitBuffer()
+{
+ // This should be greated that 64k for deflate when creating offsets pairs is enabled
+ // otherwise deflate will not be able to write one block in one go and will never report
+ // a flushed block for low-compressable data
+ const COptions* pOptions = GetOptions();
+ DWORD bufferSize = 0;
+ if (pOptions != NULL)
+ bufferSize = pOptions->m_iBufferSize;
+ if (bufferSize == 0)
+ bufferSize = COptions::cDefaultBufferSize;
+ m_pBuffer.Allocate(bufferSize);
+}
+
+
+void CZipCompressor::COptionsMap::Set(const CZipCompressor::COptions* pOptions)
+{
+ if (pOptions == NULL)
+ return;
+ int iType = pOptions->GetType();
+ Remove(iType);
+ SetAt(iType, pOptions->Clone());
+}
+
+CZipCompressor::COptions* CZipCompressor::COptionsMap::Get(int iType) const
+{
+ COptions* pTemp = NULL;
+ if (Lookup(iType, pTemp))
+ return pTemp;
+ else
+ return NULL;
+}
+
+void CZipCompressor::COptionsMap::Remove(int iType)
+{
+ COptions* pTemp = Get(iType);
+ if (pTemp != NULL)
+ {
+ delete pTemp;
+ RemoveKey(iType);
+ }
+}
+
+CZipCompressor::COptionsMap::~COptionsMap()
+{
+ COptionsMap::iterator iter = GetStartPosition();
+ while (IteratorValid(iter))
+ {
+ COptions* pOptions = NULL;
+ int iType = 0;
+ GetNextAssoc(iter, iType, pOptions);
+ delete pOptions;
+ }
+ RemoveAll();
+}
+
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