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fixed off-by-1 error in compare, and added ReplaceSubstring(). r=syd

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git-svn-id: svn://10.0.0.236/trunk@55066 18797224-902f-48f8-a5cc-f745e15eee43
This commit is contained in:
rickg%netscape.com
1999-12-02 10:14:38 +00:00
parent d85ad8e6a8
commit e99aad53d3
19 changed files with 513 additions and 10 deletions
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67
mozilla/string/obsolete/nsString.cpp
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@@ -405,6 +405,73 @@ nsCString& nsCString::ReplaceChar(const char* aSet, PRUnichar aNewChar){
return *this;
}
/**
* This method is used to replace all occurances of the
* given target with the given replacement
*
* @param
* @return *this
*/
nsCString& nsCString::ReplaceSubstring(const char* aTarget,const char* aNewValue){
if(aTarget && aNewValue) {
PRInt32 len=strlen(aTarget);
if(0<len) {
CBufDescriptor theDesc1(aTarget,PR_TRUE, len+1,len);
nsCAutoString theTarget(theDesc1);
len=strlen(aNewValue);
if(0<len) {
CBufDescriptor theDesc2(aNewValue,PR_TRUE, len+1,len);
nsCAutoString theNewValue(theDesc2);
ReplaceSubstring(theTarget,theNewValue);
}
}
}
return *this;
}
/**
* This method is used to replace all occurances of the
* given target substring with the given replacement substring
*
* @param aTarget
* @param aNewValue
* @return *this
*/
nsCString& nsCString::ReplaceSubstring(const nsCString& aTarget,const nsCString& aNewValue){
//WARNING: This is not working yet!!!!!
if(aTarget.mLength && aNewValue.mLength) {
PRBool isSameLen=(aTarget.mLength==aNewValue.mLength);
if((isSameLen) && (1==aNewValue.mLength)) {
ReplaceChar(aTarget.CharAt(0),aNewValue.CharAt(0));
}
else {
PRInt32 theIndex=0;
while(kNotFound!=(theIndex=nsStr::FindSubstr(*this,aTarget,PR_FALSE,theIndex))) {
if(aNewValue.mLength<aTarget.mLength) {
//Since target is longer than newValue, we should delete a few chars first, then overwrite.
PRInt32 theDelLen=aTarget.mLength-aNewValue.mLength;
nsStr::Delete(*this,theIndex,theDelLen);
}
else {
//this is the worst case: the newvalue is larger than the substr it's replacing
//so we have to insert some characters...
PRInt32 theInsLen=aNewValue.mLength-aTarget.mLength;
nsStr::Insert(*this,theIndex,aNewValue,0,theInsLen);
}
nsStr::Overwrite(*this,aNewValue,theIndex);
}
}
}
return *this;
}
/**
* This method is used to replace all occurances of the
* given source char with the given dest char