123

2023-08-07 19:29:24 +08:00
commit 34d6c5d489
4832 changed files with 1389451 additions and 0 deletions
--- a/CryNetwork/CompressionHelper.cpp
+++ b/CryNetwork/CompressionHelper.cpp
@@ -0,0 +1,167 @@
+#include "stdafx.h"
+#include "compressionhelper.h"
+#include "stream.h"								// CStream
+
+
+CCompressionHelper::CCompressionHelper()
+{
+#ifdef GATHER_CHARSTATISTICS
+	memset(m_dwCharStats,0,sizeof(DWORD)*256);
+	m_dwWriteBitsUncompressed=0;
+	m_dwWriteBitsCompressed=0;
+#endif
+
+	{
+		DWORD dwCharStats[]=														// created with GATHER_CHARSTATISTICS 
+		{
+			47,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
+			0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
+			131,0,0,0,0,0,0,0,0,0,0,0,0,0,2,0,
+			61,51,19,2,18,15,3,0,0,0,0,0,0,0,0,0,
+			0,7,0,14,2,0,7,9,0,1,0,0,4,0,0,2,
+			28,0,26,6,14,4,0,0,7,0,0,0,0,0,0,0,
+			0,11,0,5,5,6,0,0,0,4,0,0,0,0,6,3,
+			5,0,10,10,22,6,0,0,0,0,0,0,0,0,0,0,
+			0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
+			0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
+			0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
+			0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
+			0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
+			0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
+			0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
+			0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0
+		};
+		// m_dwWriteBitsUncompressed=4584 m_dwWriteBitsCompressed=2499
+
+		char c; 
+
+		for(c='0';c<='9';c++)	dwCharStats[(DWORD)c]++;
+		for(c='a';c<='z';c++)	dwCharStats[(DWORD)c]++;
+		for(c='A';c<='Z';c++)	dwCharStats[(DWORD)c]++;
+
+		m_CharCompressor.InitFromStatistics(dwCharStats);
+	}
+
+
+/*	// testing code
+
+#ifdef _DEBUG
+	DWORD t[3];
+
+	for(t[0]=0;t[0]<256;t[0]++)
+	for(t[1]=0;t[1]<256;t[1]++)
+	for(t[2]=0;t[2]<256;t[2]++)
+	{
+		char s[4];
+		char q[4];
+
+		s[0]=(char)t[0];
+		s[1]=(char)t[1];
+		s[2]=(char)t[2];
+		s[3]=0;
+
+		CStream str;
+
+		Write(str,s);
+		Read(str,q,4);
+
+		assert(strcmp((const char *)s,(const char *)q)==0);
+	}
+#endif
+*/
+}
+
+CCompressionHelper::~CCompressionHelper()
+{
+#ifdef GATHER_CHARSTATISTICS
+	FILE *out=fopen("c:\\temp\\CharStats.cpp","wb");
+
+//	fprintf(out,"");
+
+	for(DWORD a=0;a<16;a++)
+	{
+		fprintf(out,"   ");
+		for(DWORD b=0;b<16;b++)
+		{
+			DWORD i=a*16+b;
+
+			fprintf(out,"%d,",m_dwCharStats[i]);
+		}
+		fprintf(out,"\r\n");
+	}
+	
+	fprintf(out,"\r\nm_dwWriteBitsUncompressed=%d m_dwWriteBitsCompressed=%d\r\n",m_dwWriteBitsUncompressed,m_dwWriteBitsCompressed);
+	
+
+	fclose(out);
+#endif
+}
+
+
+bool CCompressionHelper::Write( CStream &outStream, const unsigned char inChar )
+{
+	return m_CharCompressor.Write(outStream,inChar);
+}
+
+bool CCompressionHelper::Read( CStream &inStream, unsigned char &outChar )
+{
+	return m_CharCompressor.Read(inStream,outChar);
+}
+
+bool CCompressionHelper::Write( CStream &outStream, const char *inszString )
+{
+	assert(inszString);
+
+	const unsigned char *p=(unsigned char *)inszString;
+
+#ifdef GATHER_CHARSTATISTICS
+	DWORD dwOldSize=outStream.GetSize();
+#endif
+
+	while(*p)
+	{
+		unsigned char c=*p++;
+#ifdef GATHER_CHARSTATISTICS
+		m_dwCharStats[c]++;
+		m_dwWriteBitsUncompressed+=8;
+#endif
+		if(!Write(outStream,c))
+			return false;
+	}
+
+	bool bRet=Write(outStream,(unsigned char)0);
+
+#ifdef GATHER_CHARSTATISTICS
+	m_dwCharStats[0]++;							// zero termination
+	m_dwWriteBitsUncompressed+=8;
+	m_dwWriteBitsCompressed+=outStream.GetSize()-dwOldSize;
+#endif
+
+	return bRet;
+}
+
+bool CCompressionHelper::Read( CStream &inStream, char *outszString, const DWORD indwStringSize )
+{
+	assert(outszString);
+	assert(indwStringSize);
+
+	for(DWORD i=0;i<indwStringSize;i++)
+	{
+		unsigned char c;
+		
+		if(!Read(inStream,c))
+			return false;
+
+		outszString[i]=(char)c;
+
+		if(c==0)
+			return true;
+	}
+
+	outszString[indwStringSize-1]=0;
+	return false;
+}
+
+
+
+