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implement ASCII only ToTitle until word breaker ready. Put optimization for NOCASE_CHAR in place, replace test with macro to make it more readable,

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This commit is contained in:
ftang%netscape.com 1999-02-04 16:59:03 +00:00
parent cad18383b2
commit ef83f03754
1 changed files with 95 additions and 29 deletions
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124
intl/unicharutil/src/nsCaseConversionImp2.cpp
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@ -34,6 +34,19 @@ enum {
kDiffIdx
};
#define IS_ASCII(u) ( 0x0000 == ((u) & 0xFF80))
#define IS_ASCII_UPPER(u) ((0x0041 <= (u)) && ( (u) <= 0x005a))
#define IS_ASCII_LOWER(u) ((0x0061 <= (u)) && ( (u) <= 0x007a))
#define IS_ASCII_ALPHA(u) (IS_ASCII_UPPER(u) || IS_ASCII_LOWER(u))
#define IS_NOCASE_CHAR(u) (PR_FALSE)
// consider the following range need double check
// 0x0600 0x0FFF
// 0x1100 0x1DFF
// 0x2000 0x20FF
// 0x2200 0x23FF
// 0x2500 0xFEFF
// Size of Tables
@ -135,13 +148,19 @@ nsresult nsCaseConversionImp2::ToUpper(
PRUnichar aChar, PRUnichar* aReturn
)
{
if( 0x0000 == (aChar & 0xFF80)) // optimize for ASCII
if( IS_ASCII(aChar)) // optimize for ASCII
{
if((0x0061 <= aChar) && ( aChar <= 0x007a))
if(IS_ASCII_LOWER(aChar))
*aReturn = aChar - 0x0020;
else
*aReturn = aChar;
} else {
}
else if( IS_NOCASE_CHAR(aChar)) // optimize for block which have no case
{
*aReturn = aChar;
}
else
{
*aReturn = gUpperMap->Map(aChar);
}
return NS_OK;
@ -151,14 +170,21 @@ nsresult nsCaseConversionImp2::ToLower(
PRUnichar aChar, PRUnichar* aReturn
)
{
if( 0x0000 == (aChar & 0xFF80)) // optimize for ASCII
if( IS_ASCII(aChar)) // optimize for ASCII
{
if((0x0041 <= aChar) && ( aChar <= 0x005a))
if(IS_ASCII_UPPER(aChar))
*aReturn = aChar + 0x0020;
else
*aReturn = aChar;
}
*aReturn = gLowerMap->Map(aChar);
else if( IS_NOCASE_CHAR(aChar)) // optimize for block which have no case
{
*aReturn = aChar;
}
else
{
*aReturn = gLowerMap->Map(aChar);
}
return NS_OK;
}
@ -166,18 +192,26 @@ nsresult nsCaseConversionImp2::ToTitle(
PRUnichar aChar, PRUnichar* aReturn
)
{
if( 0x0000 == (aChar & 0xFF80)) // optimize for ASCII
if( IS_ASCII(aChar)) // optimize for ASCII
{
return this->ToUpper(aChar, aReturn);
PRUnichar upper;
upper = gUpperMap->Map(aChar);
for(PRUint32 i = 0 ; i < gUpperToTitleItems; i++) {
if ( upper == gUpperToTitle[(i<<1)+kUpperIdx]) {
*aReturn = gUpperToTitle[(i<<1)+kTitleIdx];
return NS_OK;
}
}
*aReturn = upper;
else if( IS_NOCASE_CHAR(aChar)) // optimize for block which have no case
{
*aReturn = aChar;
}
else
{
PRUnichar upper;
upper = gUpperMap->Map(aChar);
for(PRUint32 i = 0 ; i < gUpperToTitleItems; i++) {
if ( upper == gUpperToTitle[(i<<1)+kUpperIdx]) {
*aReturn = gUpperToTitle[(i<<1)+kTitleIdx];
return NS_OK;
}
}
*aReturn = upper;
}
return NS_OK;
}
@ -189,13 +223,19 @@ nsresult nsCaseConversionImp2::ToUpper(
for(i=0;i<aLen;i++)
{
PRUnichar aChar = anArray[i];
if( 0x0000 == (aChar & 0xFF80)) // optimize for ASCII
if( IS_ASCII(aChar)) // optimize for ASCII
{
if((0x0061 <= aChar) && ( aChar <= 0x007a))
if(IS_ASCII_LOWER(aChar))
aReturn[i] = aChar - 0x0020;
else
aReturn[i] = aChar;
} else {
}
else if( IS_NOCASE_CHAR(aChar)) // optimize for block which have no case
{
aReturn[i] = aChar;
}
else
{
aReturn[i] = gUpperMap->Map(aChar);
}
}
@ -210,31 +250,57 @@ nsresult nsCaseConversionImp2::ToLower(
for(i=0;i<aLen;i++)
{
PRUnichar aChar = anArray[i];
if( 0x0000 == (aChar & 0xFF80)) // optimize for ASCII
if( IS_ASCII(aChar)) // optimize for ASCII
{
if((0x0041 <= aChar) && ( aChar <= 0x005a))
if(IS_ASCII_UPPER(aChar))
aReturn[i] = aChar + 0x0020;
else
aReturn[i] = aChar;
} else {
}
else if( IS_NOCASE_CHAR(aChar)) // optimize for block which have no case
{
aReturn[i] = aChar;
}
else
{
aReturn[i] = gLowerMap->Map(aChar);
}
}
return NS_OK;
}
nsresult nsCaseConversionImp2::ToTitle(
const PRUnichar* anArray, PRUnichar* aReturn, PRUint32 aLen
)
{
if(0 == aLen)
return NS_OK;
PRBool bBeginAsWordBegin = PR_TRUE; // this should really a function arguemnet
//
// to be written
// We need to replace this implementation to a real one
// Currently, it only do the right thing for ASCII
// Howerver, we need a word breaker to do the right job
//
return this->ToUpper(anArray, aReturn, aLen);
this->ToLower(anArray, aReturn, aLen);
PRBool bLastIsChar = bLastIsChar = IS_ASCII_LOWER(anArray[0]);
if(bBeginAsWordBegin)
{
this->ToTitle(aReturn[0], &aReturn[0]);
}
PRUint32 i;
for(i=1;i<aLen;i++)
{
if(!bLastIsChar)
{
this->ToTitle(aReturn[i], &aReturn[i]);
}
bLastIsChar = IS_ASCII_LOWER(aReturn[i]);
}
return NS_OK;
}