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gecko-dev/tools/dreftool/nsString.cpp

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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
*
* The contents of this file are subject to the Netscape Public License
* Version 1.0 (the "NPL"); you may not use this file except in
* compliance with the NPL. You may obtain a copy of the NPL at
* http://www.mozilla.org/NPL/
*
* Software distributed under the NPL is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
* for the specific language governing rights and limitations under the
* NPL.
*
* The Initial Developer of this code under the NPL is Netscape
* Communications Corporation. Portions created by Netscape are
* Copyright (C) 1998 Netscape Communications Corporation. All Rights
* Reserved.
*/
#include <ctype.h>
#include <string.h>
#include <stdio.h>
#include "nsCRT.h"
#include "nsDeque.h"
#include "nsString.h"
static const char* kNullPointerError = "Error: unexpected null ptr";
static const char* kWhitespace="\b\t\r\n ";
static void CSubsume(nsStr& aDest,nsStr& aSource){
if(aSource.mStr && aSource.mLength) {
if(aSource.mOwnsBuffer){
nsStr::Destroy(aDest,0);
aDest.mStr=aSource.mStr;
aDest.mLength=aSource.mLength;
aDest.mCharSize=aSource.mCharSize;
aDest.mCapacity=aSource.mCapacity;
aDest.mOwnsBuffer=aSource.mOwnsBuffer;
aSource.mOwnsBuffer=PR_FALSE;
aSource.mStr=0;
}
else{
nsStr::Assign(aDest,aSource,0,aSource.mLength,0);
}
}
else nsStr::Truncate(aDest,0,0);
}
/**
* Default constructor. Note that we actually allocate a small buffer
* to begin with. This is because the "philosophy" of the string class
* was to allow developers direct access to the underlying buffer for
* performance reasons.
*/
nsCString::nsCString(nsIMemoryAgent* anAgent) : mAgent(anAgent) {
nsStr::Initialize(*this,eOneByte);
}
/**
* This constructor accepts an ascii string
* @update gess 1/4/99
* @param aCString is a ptr to a 1-byte cstr
*/
nsCString::nsCString(const char* aCString,PRInt32 aLength,nsIMemoryAgent* anAgent) : mAgent(anAgent) {
nsStr::Initialize(*this,eOneByte);
Assign(aCString,aLength);
}
/**
* This constructor accepts an ascii string
* @update gess 1/4/99
* @param aCString is a ptr to a 1-byte cstr
*/
nsCString::nsCString(const PRUnichar* aString,PRInt32 aLength,nsIMemoryAgent* anAgent) : mAgent(anAgent) {
nsStr::Initialize(*this,eOneByte);
if(aString && aLength){
nsStr temp;
Initialize(temp,eTwoByte);
temp.mUStr=(PRUnichar*)aString;
if(0<aLength) {
//this has to be done to make sure someone doesn't tell us
//aCount=n but offer a string whose len<aCount
temp.mLength=aLength;
PRInt32 pos=nsStr::FindChar(temp,0,PR_FALSE,0);
if((0<=pos) && (pos<(PRInt32)mLength)) {
aLength=temp.mLength=pos;
}
}
else aLength=temp.mLength=nsCRT::strlen(aString);
if(0<aLength)
nsStr::Append(*this,temp,0,aLength,mAgent);
}
}
/**
* This is our copy constructor
* @update gess 1/4/99
* @param reference to another nsCString
*/
nsCString::nsCString(const nsStr &aString,nsIMemoryAgent* anAgent) : mAgent(anAgent) {
nsStr::Initialize(*this,eOneByte);
nsStr::Assign(*this,aString,0,aString.mLength,mAgent);
}
/**
* This is our copy constructor
* @update gess 1/4/99
* @param reference to another nsCString
*/
nsCString::nsCString(const nsCString& aString) :mAgent(aString.mAgent) {
nsStr::Initialize(*this,aString.mCharSize);
nsStr::Assign(*this,aString,0,aString.mLength,mAgent);
}
/**
* construct off a subsumeable string
* @update gess 1/4/99
* @param reference to a subsumeString
*/
nsCString::nsCString(nsSubsumeCStr& aSubsumeStr) :mAgent(0) {
CSubsume(*this,aSubsumeStr);
}
/**
* Destructor
* Make sure we call nsStr::Destroy.
*/
nsCString::~nsCString() {
nsStr::Destroy(*this,mAgent);
}
/**
* This method truncates this string to given length.
*
* @update gess 01/04/99
* @param anIndex -- new length of string
* @return nada
*/
void nsCString::Truncate(PRInt32 anIndex) {
nsStr::Truncate(*this,anIndex,mAgent);
}
/**
* Determine whether or not the characters in this
* string are in sorted order.
*
* @update gess 8/25/98
* @return TRUE if ordered.
*/
PRBool nsCString::IsOrdered(void) const {
PRBool result=PR_TRUE;
if(mLength>1) {
PRUint32 theIndex;
for(theIndex=1;theIndex<mLength;theIndex++) {
if(mStr[theIndex-1]>mStr[theIndex]) {
result=PR_FALSE;
break;
}
}
}
return result;
}
/**
* Call this method if you want to force the string to a certain capacity
* @update gess 1/4/99
* @param aLength -- contains new length for mStr
* @return
*/
void nsCString::SetCapacity(PRUint32 aLength) {
if(aLength>mCapacity) {
GrowCapacity(*this,aLength,mAgent);
}
AddNullTerminator(*this);
}
/**********************************************************************
Accessor methods...
*********************************************************************/
/**
*
* @update gess1/4/99
* @return ptr to internal buffer (if 1-byte), otherwise NULL
*/
const char* nsCString::GetBuffer(void) const {
return mStr;
}
PRUnichar nsCString::CharAt(PRUint32 anIndex) const {
return GetCharAt(*this,anIndex);
}
PRUnichar nsCString::First(void) const{
return GetCharAt(*this,0);
}
PRUnichar nsCString::Last(void) const{
return (char)GetCharAt(*this,mLength-1);
}
PRBool nsCString::SetCharAt(PRUnichar aChar,PRUint32 anIndex){
PRBool result=PR_FALSE;
if(anIndex<mLength){
mStr[anIndex]=(char)aChar;
// SOON! if(0==aChar) mLength=anIndex;
result=PR_TRUE;
}
return result;
}
/*********************************************************
append (operator+) METHODS....
*********************************************************/
/**
* Create a new string by appending given string to this
* @update gess 01/04/99
* @param aString -- 2nd string to be appended
* @return new string
*/
nsSubsumeCStr nsCString::operator+(const nsCString& aString){
nsCString temp(*this); //make a temp string the same size as this...
nsStr::Append(temp,aString,0,aString.mLength,mAgent);
return nsSubsumeCStr(temp);
}
/**
* create a new string by adding this to the given buffer.
* @update gess 01/04/99
* @param aCString is a ptr to cstring to be added to this
* @return newly created string
*/
nsSubsumeCStr nsCString::operator+(const char* aCString) {
nsCString temp(*this);
temp.Append(aCString);
return nsSubsumeCStr(temp);
}
/**
* create a new string by adding this to the given char.
* @update gess 01/04/99
* @param aChar is a char to be added to this
* @return newly created string
*/
nsSubsumeCStr nsCString::operator+(PRUnichar aChar) {
nsCString temp(*this);
temp.Append(aChar);
return nsSubsumeCStr(temp);
}
/**
* create a new string by adding this to the given char.
* @update gess 01/04/99
* @param aChar is a char to be added to this
* @return newly created string
*/
nsSubsumeCStr nsCString::operator+(char aChar) {
nsCString temp(*this);
temp.Append(aChar);
return nsSubsumeCStr(temp);
}
/**********************************************************************
Lexomorphic transforms...
*********************************************************************/
/**
* Converts all chars in internal string to lower
* @update gess 01/04/99
*/
void nsCString::ToLowerCase() {
nsStr::ChangeCase(*this,PR_FALSE);
}
/**
* Converts all chars in internal string to upper
* @update gess 01/04/99
*/
void nsCString::ToUpperCase() {
nsStr::ChangeCase(*this,PR_TRUE);
}
/**
* Converts chars in this to lowercase, and
* stores them in aString
* @update gess 01/04/99
* @param aOut is a string to contain result
*/
void nsCString::ToLowerCase(nsCString& aString) const {
aString=*this;
nsStr::ChangeCase(aString,PR_FALSE);
}
/**
* Converts chars in this to lowercase, and
* stores them in a given output string
* @update gess 01/04/99
* @param aOut is a string to contain result
*/
void nsCString::ToUpperCase(nsCString& aString) const {
aString=*this;
nsStr::ChangeCase(aString,PR_TRUE);
}
/**
* This method is used to remove all occurances of the
* characters found in aSet from this string.
*
* @update gess 01/04/99
* @param aSet -- characters to be cut from this
* @return *this
*/
nsCString& nsCString::StripChar(PRUnichar aChar){
PRInt32 theIndex=FindChar(aChar,PR_FALSE,0);
while(kNotFound<theIndex) {
Cut(theIndex,1);
theIndex=FindChar(aChar,PR_FALSE,theIndex);
}
return *this;
}
/**
* This method is used to remove all occurances of the
* characters found in aSet from this string.
*
* @update gess 01/04/99
* @param aSet -- characters to be cut from this
* @return *this
*/
nsCString& nsCString::StripChars(const char* aSet){
if(aSet){
PRInt32 theIndex=FindCharInSet(aSet,0);
while(kNotFound<theIndex) {
Cut(theIndex,1);
theIndex=FindCharInSet(aSet,theIndex);
}
}
return *this;
}
/**
* This method strips whitespace throughout the string
*
* @update gess 01/04/99
* @return this
*/
nsCString& nsCString::StripWhitespace() {
return StripChars(kWhitespace);
}
/**
* This method is used to replace all occurances of the
* given source char with the given dest char
*
* @param
* @return *this
*/
nsCString& nsCString::ReplaceChar(PRUnichar aOldChar, PRUnichar aNewChar) {
PRUint32 theIndex=0;
for(theIndex=0;theIndex<mLength;theIndex++){
if(mStr[theIndex]==(char)aOldChar) {
mStr[theIndex]=(char)aNewChar;
}//if
}
return *this;
}
/**
* This method is used to replace all occurances of the
* given source char with the given dest char
*
* @param
* @return *this
*/
nsCString& nsCString::ReplaceChar(const char* aSet, PRUnichar aNewChar){
if(aSet){
PRInt32 theIndex=FindCharInSet(aSet,0);
while(kNotFound<theIndex) {
mStr[theIndex]=(char)aNewChar;
theIndex=FindCharInSet(aSet,theIndex+1);
}
}
return *this;
}
/**
* This method is used to replace all occurances of the
* given source char with the given dest char
*
* @param
* @return *this
*/
PRInt32 nsCString::CountChar(PRUnichar aChar) {
PRInt32 theIndex=0;
PRInt32 theCount=0;
PRInt32 theLen=(PRInt32)mLength;
for(theIndex=0;theIndex<theLen;theIndex++){
PRUnichar theChar=GetCharAt(*this,theIndex);
if(theChar==aChar)
theCount++;
}
return theCount;
}
/**
* This method trims characters found in aTrimSet from
* either end of the underlying string.
*
* @update gess 3/31/98
* @param aTrimSet -- contains chars to be trimmed from
* both ends
* @return this
*/
nsCString& nsCString::Trim(const char* aTrimSet, PRBool aEliminateLeading,PRBool aEliminateTrailing){
if(aTrimSet){
nsStr::Trim(*this,aTrimSet,aEliminateLeading,aEliminateTrailing);
}
return *this;
}
/**
* This method strips whitespace from string.
* You can control whether whitespace is yanked from
* start and end of string as well.
*
* @update gess 3/31/98
* @param aEliminateLeading controls stripping of leading ws
* @param aEliminateTrailing controls stripping of trailing ws
* @return this
*/
nsCString& nsCString::CompressSet(const char* aSet, PRUnichar aChar,PRBool aEliminateLeading,PRBool aEliminateTrailing){
if(aSet){
ReplaceChar(aSet,aChar);
nsStr::CompressSet(*this,aSet,aEliminateLeading,aEliminateTrailing);
}
return *this;
}
/**
* This method strips whitespace from string.
* You can control whether whitespace is yanked from
* start and end of string as well.
*
* @update gess 3/31/98
* @param aEliminateLeading controls stripping of leading ws
* @param aEliminateTrailing controls stripping of trailing ws
* @return this
*/
nsCString& nsCString::CompressWhitespace( PRBool aEliminateLeading,PRBool aEliminateTrailing){
CompressSet(kWhitespace,' ',aEliminateLeading,aEliminateTrailing);
return *this;
}
/**********************************************************************
string conversion methods...
*********************************************************************/
/**
* Creates a duplicate clone (ptr) of this string.
* @update gess 01/04/99
* @return ptr to clone of this string
*/
nsCString* nsCString::ToNewString() const {
return new nsCString(*this);
}
/**
* Creates an ascii clone of this string
* @update gess 01/04/99
* @return ptr to new ascii string
*/
char* nsCString::ToNewCString() const {
nsCString temp(mStr);
temp.SetCapacity(8);
char* result=temp.mStr;
temp.mStr=0;
return result;
}
/**
* Copies contents of this string into he given buffer
* @update gess 01/04/99
* @param
* @return
*/
char* nsCString::ToCString(char* aBuf, PRUint32 aBufLength,PRUint32 anOffset) const{
if(aBuf) {
CBufDescriptor theSB(aBuf,PR_FALSE,aBufLength,0);
nsCAutoString temp(theSB);
temp.Assign(*this);
temp.mStr=0;
}
return aBuf;
}
/**
* Perform string to float conversion.
* @update gess 01/04/99
* @param aErrorCode will contain error if one occurs
* @return float rep of string value
*/
float nsCString::ToFloat(PRInt32* aErrorCode) const {
char buf[100];
if (mLength > PRInt32(sizeof(buf)-1)) {
*aErrorCode = (PRInt32) NS_ERROR_ILLEGAL_VALUE;
return 0.0f;
}
char* cp = ToCString(buf, sizeof(buf));
float f = (float) PR_strtod(cp, &cp);
if (*cp != 0) {
*aErrorCode = (PRInt32) NS_ERROR_ILLEGAL_VALUE;
}
*aErrorCode = (PRInt32) NS_OK;
return f;
}
/**
* Perform numeric string to int conversion with given radix.
* NOTE: 1. This method mandates that the string is well formed.
* 2. This method will return an error if the string you give
contains chars outside the range for the specified radix.
* @update gess 10/01/98
* @param aErrorCode will contain error if one occurs
* @param aRadix tells us what base to expect the string in.
* @return int rep of string value
*/
PRInt32 _ToInteger(nsCString& aString,PRInt32* anErrorCode,PRUint32 aRadix) {
//copy chars to local buffer -- step down from 2 bytes to 1 if necessary...
PRInt32 result=0;
char* cp = aString.mStr + aString.mLength;
PRInt32 theMult=1;
*anErrorCode = NS_OK;
//now iterate the numeric chars and build our result
char theChar=0;
char theDigit=0;
while(--cp>=aString.mStr){
char theChar=*cp;
if((theChar>='0') && (theChar<='9')){
theDigit=theChar-'0';
}
else if((theChar>='A') && (theChar<='F')) {
if(10==aRadix){
*anErrorCode=NS_ERROR_ILLEGAL_VALUE;
result=0;
break;
}
theDigit=(theChar-'A')+10;
}
else if('-'==theChar) {
result=-result;
break;
}
else if(('+'==theChar) || (' '==theChar)) { //stop in a good state if you see this...
break;
}
else {
//we've encountered a char that's not a legal number or sign
*anErrorCode=NS_ERROR_ILLEGAL_VALUE;
result=0;
break;
}
result+=theDigit*theMult;
theMult*=aRadix;
}
return result;
}
/**
* Call this method to extract the rightmost numeric value from the given
* 1-byte input string, and simultaneously determine the radix.
* NOTE: This method mandates that the string is well formed.
* Leading and trailing gunk should be removed, and the case upper.
* @update gess 10/01/98
* @param anInputString contains orig string
* @param anOutString contains numeric portion copy of input string
* @param aRadix (an out parm) tells the caller what base we think the string is in.
* @return non-zero error code if this string is non-numeric
*/
PRInt32 GetNumericSubstring(nsCString& aString,PRUint32& aRadix) {
aString.ToUpperCase();
PRInt32 decPt=nsStr::FindChar(aString,'.',PR_TRUE,0);
char* cp = (kNotFound==decPt) ? aString.mStr + aString.mLength-1 : aString.mStr+decPt-1;
aRadix=kRadixUnknown; //assume for starters...
// Skip trailing non-numeric...
while (cp >= aString.mStr) {
if((*cp>='0') && (*cp<='9')){
if(kRadixUnknown==aRadix)
aRadix=kRadix10;
break;
}
else if((*cp>='A') && (*cp<='F')) {
aRadix=16;
break;
}
cp--;
}
aString.Truncate(cp-aString.mStr+1);
//ok, now scan through chars until you find the start of this number...
//we delimit the number by the presence of: +,-,#,X
// Skip trailing non-numeric...
cp++;
while (--cp >= aString.mStr) {
if((*cp>='0') && (*cp<='9')){
continue;
}
else if((*cp>='A') && (*cp<='F')) {
continue;
}
else if((*cp=='-') || (*cp=='+')){
break;
}
else {
if(('#'==(*cp)) || ('X'==(*cp)))
aRadix=kRadix16;
cp++; //move back by one
break;
}
}
if(cp>aString.mStr)
aString.Cut(0,cp-aString.mStr);
PRInt32 result=(0==aString.mLength) ? NS_ERROR_ILLEGAL_VALUE : NS_OK;
return result;
}
/**
* This method tries to autodetect that radix given a string
* @update gess 10/01/98
* @return 10,16,or 0 (meaning I don't know)
*/
PRUint32 nsCString::DetermineRadix(void) {
PRUint32 result=kRadixUnknown;
if(0<mLength) {
nsCAutoString theString(*this);
if(NS_OK!=GetNumericSubstring(theString,result))
result=kRadixUnknown;
}
return result;
}
/**
* Perform decimal numeric string to int conversion.
* NOTE: In this version, we use the radix you give, even if it's wrong.
* @update gess 10/01/98
* @param aErrorCode will contain error if one occurs
* @param aRadix tells us what base to expect the given string in.
* @return int rep of string value
*/
PRInt32 nsCString::ToInteger(PRInt32* anErrorCode,PRUint32 aRadix) const {
//copy chars to local buffer -- step down from 2 bytes to 1 if necessary...
nsCAutoString theString(*this);
PRUint32 theRadix=aRadix;
PRInt32 result=0;
*anErrorCode=GetNumericSubstring(theString,theRadix); //we actually don't use this radix; use given radix instead
if(NS_OK==*anErrorCode){
if(kAutoDetect==aRadix)
aRadix=theRadix;
if((kRadix10==aRadix) || (kRadix16==aRadix))
result=_ToInteger(theString,anErrorCode,aRadix); //note we use the given radix, not the computed one.
else *anErrorCode=NS_ERROR_ILLEGAL_VALUE;
}
return result;
}
/**********************************************************************
String manipulation methods...
*********************************************************************/
/**
* assign given string to this one
* @update gess 01/04/99
* @param aString: string to be added to this
* @return this
*/
nsCString& nsCString::Assign(const nsCString& aString,PRInt32 aCount) {
if(this!=&aString){
nsStr::Truncate(*this,0,0);
if(aCount<0)
aCount=aString.mLength;
else aCount=MinInt(aCount,aString.mLength);
nsStr::Assign(*this,aString,0,aCount,mAgent);
}
return *this;
}
/**
* assign given char* to this string
* @update gess 01/04/99
* @param aCString: buffer to be assigned to this
* @return this
*/
nsCString& nsCString::Assign(const char* aCString,PRInt32 aCount) {
nsStr::Truncate(*this,0,0);
if(aCString){
Append(aCString,aCount);
}
return *this;
}
/**
* assign given char to this string
* @update gess 01/04/99
* @param aChar: char to be assignd to this
* @return this
*/
nsCString& nsCString::Assign(PRUnichar aChar) {
nsStr::Truncate(*this,0,0);
return Append(aChar);
}
/**
* assign given char to this string
* @update gess 01/04/99
* @param aChar: char to be assignd to this
* @return this
*/
nsCString& nsCString::Assign(char aChar) {
nsStr::Truncate(*this,0,0);
return Append(aChar);
}
/**
* WARNING! THIS IS A VERY SPECIAL METHOD.
* This method "steals" the contents of aSource and hands it to aDest.
* Ordinarily a copy is made, but not in this version.
* @update gess10/30/98
* @param
* @return
*/
#ifdef AIX
nsCString& nsCString::operator=(const nsSubsumeCStr& aSubsumeString) {
nsSubsumeCStr temp(aSubsumeString); // a temp is needed for the AIX compiler
CSubsume(*this,temp);
#else
nsCString& nsCString::operator=(nsSubsumeCStr& aSubsumeString) {
CSubsume(*this,aSubsumeString);
#endif // AIX
return *this;
}
/**
* append given string to this string
* @update gess 01/04/99
* @param aString : string to be appended to this
* @return this
*/
nsCString& nsCString::Append(const nsCString& aString,PRInt32 aCount) {
if(aCount<0)
aCount=aString.mLength;
else aCount=MinInt(aCount,aString.mLength);
if(0<aCount)
nsStr::Append(*this,aString,0,aCount,mAgent);
return *this;
}
/**
* append given string to this string
* @update gess 01/04/99
* @param aString : string to be appended to this
* @param aCount: #of chars to be copied; -1 means to copy the whole thing
* @return this
*/
nsCString& nsCString::Append(const char* aCString,PRInt32 aCount) {
if(aCString){
nsStr temp;
Initialize(temp,eOneByte);
temp.mStr=(char*)aCString;
if(0<aCount) {
//this has to be done to make sure someone doesn't tell us
//aCount=n but offer a string whose len<aCount
temp.mLength=aCount;
PRInt32 pos=nsStr::FindChar(temp,0,PR_FALSE,0);
if((0<=pos) && (pos<aCount)) {
aCount=temp.mLength=pos;
}
}
else aCount=temp.mLength=nsCRT::strlen(aCString);
if(0<aCount)
nsStr::Append(*this,temp,0,aCount,mAgent);
}
return *this;
}
/**
* append given string to this string
* @update gess 01/04/99
* @param aString : string to be appended to this
* @return this
*/
nsCString& nsCString::Append(PRUnichar aChar) {
PRUnichar buf[2]={0,0};
buf[0]=aChar;
nsStr temp;
Initialize(temp,eTwoByte);
temp.mUStr=buf;
temp.mLength=1;
nsStr::Append(*this,temp,0,1,mAgent);
return *this;
}
/**
* append given string to this string
* @update gess 01/04/99
* @param aString : string to be appended to this
* @return this
*/
nsCString& nsCString::Append(char aChar) {
char buf[2]={0,0};
buf[0]=aChar;
nsStr temp;
Initialize(temp,eOneByte);
temp.mStr=buf;
temp.mLength=1;
nsStr::Append(*this,temp,0,1,mAgent);
return *this;
}
/**
*
* @update gess 01/04/99
* @param
* @return
*/
nsCString& nsCString::Append(PRInt32 aInteger,PRInt32 aRadix) {
char* fmt = "%d";
if (8 == aRadix) {
fmt = "%o";
} else if (16 == aRadix) {
fmt = "%x";
}
char buf[40];
// *** XX UNCOMMENT THIS LINE
//PR_snprintf(buf, sizeof(buf), fmt, aInteger);
sprintf(buf,fmt,aInteger);
return Append(buf);
}
/**
*
* @update gess 01/04/99
* @param
* @return
*/
nsCString& nsCString::Append(float aFloat){
char buf[40];
// *** XX UNCOMMENT THIS LINE
//PR_snprintf(buf, sizeof(buf), "%g", aFloat);
sprintf(buf,"%g",aFloat);
return Append(buf);
}
/*
* Copies n characters from this string to given string,
* starting at the leftmost offset.
*
*
* @update gess 4/1/98
* @param aCopy -- Receiving string
* @param aCount -- number of chars to copy
* @return number of chars copied
*/
PRUint32 nsCString::Left(nsCString& aDest,PRInt32 aCount) const{
if(aCount<0)
aCount=mLength;
else aCount=MinInt(aCount,mLength);
nsStr::Assign(aDest,*this,0,aCount,mAgent);
return aDest.mLength;
}
/*
* Copies n characters from this string to given string,
* starting at the given offset.
*
*
* @update gess 4/1/98
* @param aDest -- Receiving string
* @param aCount -- number of chars to copy
* @param anOffset -- position where copying begins
* @return number of chars copied
*/
PRUint32 nsCString::Mid(nsCString& aDest,PRUint32 anOffset,PRInt32 aCount) const{
if(aCount<0)
aCount=mLength;
else aCount=MinInt(aCount,mLength);
nsStr::Assign(aDest,*this,anOffset,aCount,mAgent);
return aDest.mLength;
}
/*
* Copies n characters from this string to given string,
* starting at rightmost char.
*
*
* @update gess 4/1/98
* @param aCopy -- Receiving string
* @param aCount -- number of chars to copy
* @return number of chars copied
*/
PRUint32 nsCString::Right(nsCString& aCopy,PRInt32 aCount) const{
PRInt32 offset=MaxInt(mLength-aCount,0);
return Mid(aCopy,offset,aCount);
}
/*
* This method inserts n chars from given string into this
* string at str[anOffset].
*
* @update gess 4/1/98
* @param aCopy -- String to be inserted into this
* @param anOffset -- insertion position within this str
* @param aCount -- number of chars to be copied from aCopy
* @return number of chars inserted into this.
*/
nsCString& nsCString::Insert(const nsCString& aCopy,PRUint32 anOffset,PRInt32 aCount) {
nsStr::Insert(*this,anOffset,aCopy,0,aCount,mAgent);
return *this;
}
/**
* Insert a single unicode char into this string at
* a specified offset.
*
* @update gess4/22/98
* @param aChar char to be inserted into this string
* @param anOffset is insert pos in str
* @return the number of chars inserted into this string
*/
nsCString& nsCString::Insert(const char* aCString,PRUint32 anOffset,PRInt32 aCount){
if(aCString){
nsStr temp;
nsStr::Initialize(temp,eOneByte);
temp.mStr=(char*)aCString;
if(0<aCount) {
//this has to be done to make sure someone doesn't tell us
//aCount=n but offer a string whose len<aCount
temp.mLength=aCount;
PRInt32 pos=nsStr::FindChar(temp,0,PR_FALSE,0);
if((0<=pos) && (pos<aCount)) {
aCount=temp.mLength=pos;
}
}
else aCount=temp.mLength=nsCRT::strlen(aCString);
if(temp.mLength && (0<aCount)){
nsStr::Insert(*this,anOffset,temp,0,aCount,0);
}
}
return *this;
}
/**
* Insert a single uni-char into this string at
* a specified offset.
*
* @update gess4/22/98
* @param aChar char to be inserted into this string
* @param anOffset is insert pos in str
* @return the number of chars inserted into this string
*/
nsCString& nsCString::Insert(PRUnichar aChar,PRUint32 anOffset){
PRUnichar theBuffer[2]={0,0};
theBuffer[0]=aChar;
nsStr temp;
nsStr::Initialize(temp,eTwoByte);
temp.mUStr=theBuffer;
temp.mLength=1;
nsStr::Insert(*this,anOffset,temp,0,1,0);
return *this;
}
/**
* Insert a single uni-char into this string at
* a specified offset.
*
* @update gess4/22/98
* @param aChar char to be inserted into this string
* @param anOffset is insert pos in str
* @return the number of chars inserted into this string
*/
nsCString& nsCString::Insert(char aChar,PRUint32 anOffset){
char theBuffer[2]={0,0};
theBuffer[0]=aChar;
nsStr temp;
nsStr::Initialize(temp,eOneByte);
temp.mStr=theBuffer;
temp.mLength=1;
nsStr::Insert(*this,anOffset,temp,0,1,0);
return *this;
}
/*
* This method is used to cut characters in this string
* starting at anOffset, continuing for aCount chars.
*
* @update gess 01/04/99
* @param anOffset -- start pos for cut operation
* @param aCount -- number of chars to be cut
* @return *this
*/
nsCString& nsCString::Cut(PRUint32 anOffset, PRInt32 aCount) {
if(0<aCount) {
nsStr::Delete(*this,anOffset,aCount,mAgent);
}
return *this;
}
/**********************************************************************
Searching methods...
*********************************************************************/
/**
* Search for given character within this string.
* This method does so by using a binary search,
* so your string HAD BETTER BE ORDERED!
*
* @param aChar is the unicode char to be found
* @return offset in string, or -1 (kNotFound)
*/
PRInt32 nsCString::BinarySearch(PRUnichar aChar) const{
PRInt32 low=0;
PRInt32 high=mLength-1;
while (low <= high) {
int middle = (low + high) >> 1;
PRUnichar theChar=GetCharAt(*this,middle);
if (theChar==aChar)
return middle;
if (theChar>aChar)
high = middle - 1;
else
low = middle + 1;
}
return kNotFound;
}
/**
* Search for given buffer within this string
*
* @update gess 3/25/98
* @param aCStringBuf - charstr to be found
* @return offset in string, or -1 (kNotFound)
*/
PRInt32 nsCString::Find(const char* aCString,PRBool aIgnoreCase,PRInt32 anOffset) const{
PRInt32 result=kNotFound;
if(aCString) {
nsStr temp;
nsStr::Initialize(temp,eOneByte);
temp.mLength=nsCRT::strlen(aCString);
temp.mStr=(char*)aCString;
result=nsStr::FindSubstr(*this,temp,aIgnoreCase,anOffset);
}
return result;
}
/**
* Search for given buffer within this string
*
* @update gess 3/25/98
* @param aCStringBuf - charstr to be found
* @return offset in string, or -1 (kNotFound)
*/
PRInt32 nsCString::Find(const PRUnichar* aString,PRBool aIgnoreCase,PRInt32 anOffset) const{
PRInt32 result=kNotFound;
if(aString) {
nsStr temp;
nsStr::Initialize(temp,eTwoByte);
temp.mLength=nsCRT::strlen(aString);
temp.mUStr=(PRUnichar*)aString;
result=nsStr::FindSubstr(*this,temp,aIgnoreCase,anOffset);
}
return result;
}
/**
* Search for given buffer within this string
*
* @update gess 3/25/98
* @param nsCString -- buffer to be found
* @return offset in string, or -1 (kNotFound)
*/
PRInt32 nsCString::Find(const nsStr& aString,PRBool aIgnoreCase,PRInt32 anOffset) const{
PRInt32 result=nsStr::FindSubstr(*this,aString,aIgnoreCase,anOffset);
return result;
}
/**
* Search for a given char, starting at given offset
*
* @update gess 3/25/98
* @param
* @return offset of found char, or -1 (kNotFound)
*/
PRInt32 nsCString::Find(PRUnichar aChar,PRInt32 anOffset,PRBool aIgnoreCase) const{
PRInt32 result=nsStr::FindChar(*this,aChar,aIgnoreCase,anOffset);
return result;
}
/**
* Search for a given char, starting at given offset
*
* @update gess 3/25/98
* @param
* @return offset of found char, or -1 (kNotFound)
*/
PRInt32 nsCString::FindChar(PRUnichar aChar,PRBool aIgnoreCase,PRInt32 anOffset) const{
PRInt32 result=nsStr::FindChar(*this,aChar,aIgnoreCase,anOffset);
return result;
}
/**
*
*
* @update gess 3/25/98
* @param
* @return
*/
PRInt32 nsCString::FindCharInSet(const char* aCStringSet,PRInt32 anOffset) const{
PRInt32 result=kNotFound;
if(aCStringSet) {
nsStr temp;
nsStr::Initialize(temp,eOneByte);
temp.mLength=nsCRT::strlen(aCStringSet);
temp.mStr=(char*)aCStringSet;
result=nsStr::FindCharInSet(*this,temp,PR_FALSE,anOffset);
}
return result;
}
/**
*
*
* @update gess 3/25/98
* @param
* @return
*/
PRInt32 nsCString::FindCharInSet(const PRUnichar* aStringSet,PRInt32 anOffset) const{
PRInt32 result=kNotFound;
if(aStringSet) {
nsStr temp;
nsStr::Initialize(temp,eTwoByte);
temp.mLength=nsCRT::strlen(aStringSet);
temp.mStr=(char*)aStringSet;
result=nsStr::FindCharInSet(*this,temp,PR_FALSE,anOffset);
}
return result;
}
/**
*
*
* @update gess 3/25/98
* @param
* @return
*/
PRInt32 nsCString::FindCharInSet(const nsStr& aSet,PRInt32 anOffset) const{
PRInt32 result=nsStr::FindCharInSet(*this,aSet,PR_FALSE,anOffset);
return result;
}
/**
*
*
* @update gess 3/25/98
* @param
* @return
*/
PRInt32 nsCString::RFind(const nsStr& aString,PRBool aIgnoreCase,PRInt32 anOffset) const{
PRInt32 result=nsStr::RFindSubstr(*this,aString,aIgnoreCase,anOffset);
return result;
}
/**
*
*
* @update gess 3/25/98
* @param
* @return
*/
PRInt32 nsCString::RFind(const char* aString,PRBool aIgnoreCase,PRInt32 anOffset) const{
PRInt32 result=kNotFound;
if(aString) {
nsStr temp;
nsStr::Initialize(temp,eOneByte);
temp.mLength=nsCRT::strlen(aString);
temp.mStr=(char*)aString;
result=nsStr::RFindSubstr(*this,temp,aIgnoreCase,anOffset);
}
return result;
}
/**
* Search for a given char, starting at given offset
*
* @update gess 3/25/98
* @param
* @return offset of found char, or -1 (kNotFound)
*/
PRInt32 nsCString::RFind(PRUnichar aChar,PRInt32 anOffset,PRBool aIgnoreCase) const{
PRInt32 result=nsStr::RFindChar(*this,aChar,aIgnoreCase,anOffset);
return result;
}
/**
* Search for a given char, starting at given offset
*
* @update gess 3/25/98
* @param
* @return offset of found char, or -1 (kNotFound)
*/
PRInt32 nsCString::RFindChar(PRUnichar aChar,PRBool aIgnoreCase,PRInt32 anOffset) const{
PRInt32 result=nsStr::RFindChar(*this,aChar,aIgnoreCase,anOffset);
return result;
}
/**
*
*
* @update gess 3/25/98
* @param
* @return
*/
PRInt32 nsCString::RFindCharInSet(const char* aCStringSet,PRInt32 anOffset) const{
PRInt32 result=kNotFound;
if(aCStringSet) {
nsStr temp;
nsStr::Initialize(temp,eOneByte);
temp.mLength=nsCRT::strlen(aCStringSet);
temp.mStr=(char*)aCStringSet;
result=nsStr::RFindCharInSet(*this,temp,PR_FALSE,anOffset);
}
return result;
}
/**
*
*
* @update gess 3/25/98
* @param
* @return
*/
PRInt32 nsCString::RFindCharInSet(const PRUnichar* aStringSet,PRInt32 anOffset) const{
PRInt32 result=kNotFound;
if(aStringSet) {
nsStr temp;
nsStr::Initialize(temp,eTwoByte);
temp.mLength=nsCRT::strlen(aStringSet);
temp.mUStr=(PRUnichar*)aStringSet;
result=nsStr::RFindCharInSet(*this,temp,PR_FALSE,anOffset);
}
return result;
}
/**
*
*
* @update gess 3/25/98
* @param
* @return
*/
PRInt32 nsCString::RFindCharInSet(const nsStr& aSet,PRInt32 anOffset) const{
PRInt32 result=nsStr::RFindCharInSet(*this,aSet,PR_FALSE,anOffset);
return result;
}
/**************************************************************
COMPARISON METHODS...
**************************************************************/
/**
* Compares given cstring to this string.
* @update gess 01/04/99
* @param aCString points to a cstring
* @param aIgnoreCase tells us how to treat case
* @param aCount tells us how many chars to test; -1 implies full length
* @return -1,0,1
*/
PRInt32 nsCString::Compare(const char *aCString,PRBool aIgnoreCase,PRInt32 aCount) const {
if(aCString) {
nsStr temp;
nsStr::Initialize(temp,eOneByte);
temp.mLength=nsCRT::strlen(aCString);
temp.mStr=(char*)aCString;
return nsStr::Compare(*this,temp,aCount,aIgnoreCase);
}
return 0;
}
/**
* Compares given unistring to this string.
* @update gess 01/04/99
* @param aString pts to a uni-string
* @param aIgnoreCase tells us how to treat case
* @param aCount tells us how many chars to test; -1 implies full length
* @return -1,0,1
*/
PRInt32 nsCString::Compare(const PRUnichar* aString,PRBool aIgnoreCase,PRInt32 aCount) const {
if(aString) {
nsStr temp;
nsStr::Initialize(temp,eTwoByte);
temp.mLength=nsCRT::strlen(aString);
temp.mUStr=(PRUnichar*)aString;
return nsStr::Compare(*this,temp,aCount,aIgnoreCase);
}
return 0;
}
/**
* Compare given nsStr with this cstring.
*
* @param aString is an nsStr instance to be compared
* @param aIgnoreCase tells us how to treat case
* @param aCount tells us how many chars to test; -1 implies full length
* @return -1,0,1
*/
PRInt32 nsCString::Compare(const nsStr& aString,PRBool aIgnoreCase,PRInt32 aCount) const {
return nsStr::Compare(*this,aString,aCount,aIgnoreCase);
}
PRBool nsCString::operator==(const nsStr& S) const {return Equals(S);}
PRBool nsCString::operator==(const char* s) const {return Equals(s);}
PRBool nsCString::operator==(const PRUnichar* s) const {return Equals(s);}
PRBool nsCString::operator!=(const nsStr& S) const {return PRBool(Compare(S)!=0);}
PRBool nsCString::operator!=(const char* s) const {return PRBool(Compare(s)!=0);}
PRBool nsCString::operator!=(const PRUnichar* s) const {return PRBool(Compare(s)!=0);}
PRBool nsCString::operator<(const nsStr& S) const {return PRBool(Compare(S)<0);}
PRBool nsCString::operator<(const char* s) const {return PRBool(Compare(s)<0);}
PRBool nsCString::operator<(const PRUnichar* s) const {return PRBool(Compare(s)<0);}
PRBool nsCString::operator>(const nsStr& S) const {return PRBool(Compare(S)>0);}
PRBool nsCString::operator>(const char* s) const {return PRBool(Compare(s)>0);}
PRBool nsCString::operator>(const PRUnichar* s) const {return PRBool(Compare(s)>0);}
PRBool nsCString::operator<=(const nsStr& S) const {return PRBool(Compare(S)<=0);}
PRBool nsCString::operator<=(const char* s) const {return PRBool(Compare(s)<=0);}
PRBool nsCString::operator<=(const PRUnichar* s) const {return PRBool(Compare(s)<=0);}
PRBool nsCString::operator>=(const nsStr& S) const {return PRBool(Compare(S)>=0);}
PRBool nsCString::operator>=(const char* s) const {return PRBool(Compare(s)>=0);}
PRBool nsCString::operator>=(const PRUnichar* s) const {return PRBool(Compare(s)>=0);}
PRBool nsCString::EqualsIgnoreCase(const nsStr& aString) const {
return Equals(aString,PR_TRUE);
}
PRBool nsCString::EqualsIgnoreCase(const char* aString,PRInt32 aLength) const {
return Equals(aString,PR_TRUE,aLength);
}
PRBool nsCString::EqualsIgnoreCase(const PRUnichar* aString,PRInt32 aLength) const {
return Equals(aString,PR_TRUE,aLength);
}
/**
* Compare this to given string; note that we compare full strings here.
*
* @update gess 01/04/99
* @param aString is the other nsCString to be compared to
* @param aIgnoreCase tells us how to treat case
* @param aCount tells us how many chars to test; -1 implies full length
* @return TRUE if equal
*/
PRBool nsCString::Equals(const nsStr& aString,PRBool aIgnoreCase,PRInt32 aCount) const {
PRInt32 theAnswer=nsStr::Compare(*this,aString,aCount,aIgnoreCase);
PRBool result=PRBool(0==theAnswer);
return result;
}
/**
* Compare this to given string; note that we compare full strings here.
*
* @param aString is the CString to be compared
* @param aCount tells us how many chars you want to compare starting with start of string
* @param aIgnorecase tells us whether to be case sensitive
* @param aCount tells us how many chars to test; -1 implies full length
* @return TRUE if equal
*/
PRBool nsCString::Equals(const char* aCString,PRBool aIgnoreCase,PRInt32 aCount) const{
PRInt32 theAnswer=Compare(aCString,aIgnoreCase,aCount);
PRBool result=PRBool(0==theAnswer);
return result;
}
PRBool nsCString::Equals(const PRUnichar* aString,PRBool aIgnoreCase,PRInt32 aCount) const {
PRInt32 theAnswer=Compare(aString,aIgnoreCase,aCount);
PRBool result=PRBool(0==theAnswer);
return result;
}
/**************************************************************
Define the string deallocator class...
**************************************************************/
#ifndef TESTBED
class nsCStringDeallocator: public nsDequeFunctor{
public:
virtual void* operator()(void* anObject) {
static nsMemoryAgent theAgent;
nsCString* aString= (nsCString*)anObject;
if(aString){
aString->mAgent=&theAgent;
delete aString;
}
return 0;
}
};
#endif
/****************************************************************************
* This class, appropriately enough, creates and recycles nsCString objects..
****************************************************************************/
#ifndef TESTBED
class nsCStringRecycler {
public:
nsCStringRecycler() : mDeque(0) {
}
~nsCStringRecycler() {
nsCStringDeallocator theDeallocator;
mDeque.ForEach(theDeallocator); //now delete the strings
}
void Recycle(nsCString* aString) {
mDeque.Push(aString);
}
nsCString* CreateString(void){
nsCString* result=(nsCString*)mDeque.Pop();
if(!result)
result=new nsCString();
return result;
}
nsDeque mDeque;
};
static nsCStringRecycler& GetRecycler(void);
/**
*
* @update gess 01/04/99
* @param
* @return
*/
nsCStringRecycler& GetRecycler(void){
static nsCStringRecycler gCRecycler;
return gCRecycler;
}
#endif
/**
* Call this mehod when you're done
* @update gess 01/04/99
* @param
* @return
*/
nsCString* nsCString::CreateString(void){
nsCString* result=0;
#ifndef TESTBED
result=GetRecycler().CreateString();
#endif
return result;
}
/**
* Call this mehod when you're done
* @update gess 01/04/99
* @param
* @return
*/
void nsCString::Recycle(nsCString* aString){
#ifndef TESTBED
GetRecycler().Recycle(aString);
#endif
}
#if 0
/**
*
* @update gess 01/04/99
* @param
* @return
*/
void nsCString::DebugDump(ostream& aStream) const {
for(PRUint32 i=0;i<mLength;i++) {
aStream <<mStr[i];
}
aStream << endl;
}
/**
*
* @update gess8/8/98
* @param
* @return
*/
ostream& operator<<(ostream& aStream,const nsCString& aString){
if(eOneByte==aString.mCharSize) {
aStream<<aString.mStr;
}
else{
PRUint32 theOffset=0;
const PRUint32 theBufSize=300;
char theBuf[theBufSize+1];
PRUint32 theCount=0;
PRUint32 theRemains=0;
while(theOffset<aString.mLength){
theRemains=aString.mLength-theOffset;
theCount=(theRemains<theBufSize) ? theRemains : theBufSize;
aString.ToCString(theBuf,theCount+1,theOffset);
theBuf[theCount]=0;
aStream<<theBuf;
theOffset+=theCount;
}
}
return aStream;
}
#endif
/***********************************************************************
IMPLEMENTATION NOTES: AUTOSTRING...
***********************************************************************/
/**
* Special case constructor, that allows the consumer to provide
* an underlying buffer for performance reasons.
* @param aBuffer points to your buffer
* @param aBufSize defines the size of your buffer
* @param aCurrentLength tells us the current length of the buffer
*/
nsCAutoString::nsCAutoString() : nsCString(){
nsStr::Initialize(*this,mBuffer,sizeof(mBuffer)-1,0,eOneByte,PR_FALSE);
mAgent=0;
AddNullTerminator(*this);
}
/**
* construct from external buffer and given string
* @param anExtBuffer describes an external buffer
* @param aCString is a ptr to a 1-byte cstr
*/
nsCAutoString::nsCAutoString(const nsCAutoString& aString) : nsCString() {
nsStr::Initialize(*this,mBuffer,sizeof(mBuffer)-1,0,eOneByte,PR_FALSE);
mAgent=0;
AddNullTerminator(*this);
Append(aString);
}
/**
* Copy construct from ascii c-string
* @param aCString is a ptr to a 1-byte cstr
*/
nsCAutoString::nsCAutoString(const char* aCString,PRInt32 aLength) : nsCString() {
nsStr::Initialize(*this,mBuffer,sizeof(mBuffer)-1,0,eOneByte,PR_FALSE);
mAgent=0;
AddNullTerminator(*this);
Append(aCString,aLength);
}
/**
* Copy construct from ascii c-string
* @param aCString is a ptr to a 1-byte cstr
*/
nsCAutoString::nsCAutoString(CBufDescriptor& aBuffer) : nsCString() {
mAgent=0;
if(!aBuffer.mBuffer) {
nsStr::Initialize(*this,mBuffer,sizeof(mBuffer)-1,0,eOneByte,PR_FALSE);
}
else {
nsStr::Initialize(*this,aBuffer.mBuffer,aBuffer.mCapacity,aBuffer.mLength,aBuffer.mCharSize,!aBuffer.mStackBased);
}
AddNullTerminator(*this); //this isn't really needed, but it guarantees that folks don't pass string constants.
}
/**
* Copy construct from uni-string
* @param aString is a ptr to a unistr
*/
nsCAutoString::nsCAutoString(const PRUnichar* aString,PRInt32 aLength) : nsCString() {
mAgent=0;
nsStr::Initialize(*this,mBuffer,sizeof(mBuffer)-1,0,eOneByte,PR_FALSE);
AddNullTerminator(*this);
Append(aString,aLength);
}
/**
* Copy construct from an nsCString
* @param
*/
nsCAutoString::nsCAutoString(const nsStr& aString) : nsCString() {
mAgent=0;
nsStr::Initialize(*this,mBuffer,sizeof(mBuffer)-1,0,eOneByte,PR_FALSE);
AddNullTerminator(*this);
Append(aString);
}
/**
* Copy construct from an nsCString
* @param
*/
nsCAutoString::nsCAutoString(PRUnichar aChar) : nsCString(){
mAgent=0;
nsStr::Initialize(*this,mBuffer,sizeof(mBuffer)-1,0,eOneByte,PR_FALSE);
AddNullTerminator(*this);
Append(aChar);
}
/**
* construct from a subsumeable string
* @update gess 1/4/99
* @param reference to a subsumeString
*/
#ifdef AIX
nsCAutoString::nsCAutoString(const nsSubsumeCStr& aSubsumeStr) :nsCString() {
mAgent=0;
nsSubsumeCStr temp(aSubsumeStr); // a temp is needed for the AIX compiler
CSubsume(*this,temp);
#else
nsCAutoString::nsCAutoString( nsSubsumeCStr& aSubsumeStr) :nsCString() {
mAgent=0;
CSubsume(*this,aSubsumeStr);
#endif // AIX
}
/**
* deconstruct the autstring
* @param
*/
nsCAutoString::~nsCAutoString(){
}
nsSubsumeCStr::nsSubsumeCStr(nsStr& aString) : nsCString() {
CSubsume(*this,aString);
}
nsSubsumeCStr::nsSubsumeCStr(PRUnichar* aString,PRBool assumeOwnership,PRInt32 aLength) : nsCString() {
mUStr=aString;
mCapacity=mLength=(-1==aLength) ? nsCRT::strlen(aString) : aLength-1;
mOwnsBuffer=assumeOwnership;
}
nsSubsumeCStr::nsSubsumeCStr(char* aString,PRBool assumeOwnership,PRInt32 aLength) : nsCString() {
mStr=aString;
mCapacity=mLength=(-1==aLength) ? strlen(aString) : aLength-1;
mOwnsBuffer=assumeOwnership;
}
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