// File Names
bool HashCmpKeyFun::HashFun_CompareKeyWord_FileName( const void* pKeyWord1, const unsigned long nKeyWordLen1,
const void* pKeyWord2, const unsigned long nKeyWordLen2 )
{
char *pEndKey1, *pKey1, *pKey2;
if( nKeyWordLen1 != nKeyWordLen2 )
{
return false;
}
pKey1 = (char*)pKeyWord1;
pKey2 = (char*)pKeyWord2;
pEndKey1 = pKey1 + nKeyWordLen1;
while(pKey1 < pEndKey1)
{
if(hs_FilenameChar(*pKey1) != hs_FilenameChar(*pKey2))
{
return false;
}
++pKey1;
++pKey2;
}
return true;
}
static int hs_CompareKey_Filename(void *pData1, void *pData2, uint32 dataLen)
{
char *pEndKey1, *pKey1, *pKey2;
pKey1 = (char*)pData1;
pKey2 = (char*)pData2;
pEndKey1 = pKey1 + dataLen;
while(pKey1 < pEndKey1)
{
if(hs_FilenameChar(*pKey1) != hs_FilenameChar(*pKey2))
return 0;
++pKey1;
++pKey2;
}
return 1;
}
static uint32 hs_GetCode_Filename(const void *pData, uint32 dataLen)
{
char *pCurByte;
uint32 sum, i;
sum = 0;
pCurByte = (char*)pData;
for(i=0; i < dataLen; i++)
{
sum += ((uint32)hs_FilenameChar(*pCurByte)) * i;
++pCurByte;
}
return sum;
}
// 计算一个文件名序列的 Code
//
// 计算所有字符(如果是字母则转换为大写)的 ASCII 码数值与位置索引的乘积
// 的和
unsigned long HashFun::HashFun_GenerateCode_FileName( const void* pKeyWord, const unsigned long nKeyWordLen )
{
char *pCurByte;
unsigned long sum, i;
sum = 0;
char* szKeyWord = (char*)pKeyWord;
unsigned long dataLen = strlen( szKeyWord );
pCurByte = (char*)szKeyWord;
for( i=0; i < dataLen; i++ )
{
sum += ((unsigned long)hs_FilenameChar(*pCurByte)) * i;
++pCurByte;
}
return sum;
}
