From 16f738ecee689c6feb2acb7e4ef4d9bb4144ae7d Mon Sep 17 00:00:00 2001
From: Tomas Bzatek <tbzatek@users.sourceforge.net>
Date: Sun, 8 Jun 2008 11:04:43 +0200
Subject: Initial commit

---
 zip/ZipArchive/ZipCompressor.cpp | 104 +++++++++++++++++++++++++++++++++++++++
 1 file changed, 104 insertions(+)
 create mode 100644 zip/ZipArchive/ZipCompressor.cpp

(limited to 'zip/ZipArchive/ZipCompressor.cpp')

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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