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gecko-dev/xpcom/ds/nsString2.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 1.1 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.mozilla.org/NPL/
*
* Software distributed under the License is distributed on an "AS
* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
* implied. See the License for the specific language governing
* rights and limitations under the License.
*
* The Original Code is mozilla.org code.
*
* The Initial Developer of the Original Code is Netscape
* Communications Corporation. Portions created by Netscape are
* Copyright (C) 1998 Netscape Communications Corporation. All
* Rights Reserved.
*
* Contributor(s):
* Rick Gessner <rickg@netscape.com> (original author)
* Scott Collins <scc@mozilla.org>
*/
#include <ctype.h>
#include <string.h>
#include <stdlib.h>
#include "nsString.h"
#include "nsDebug.h"
#include "nsDeque.h"
#ifndef RICKG_TESTBED
#include "prdtoa.h"
#include "nsISizeOfHandler.h"
#endif
static const char* kPossibleNull = "Error: possible unintended null in string";
static const char* kNullPointerError = "Error: unexpected null ptr";
static const char* kWhitespace="\b\t\r\n ";
static void Subsume(nsStr& aDest,nsStr& aSource){
if(aSource.mStr && aSource.mLength) {
if(aSource.mOwnsBuffer){
nsStr::Destroy(aDest);
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::StrAssign(aDest,aSource,0,aSource.mLength);
}
}
else nsStr::StrTruncate(aDest,0);
}
/**
* Default constructor.
*/
nsString::nsString() {
Initialize(*this,eTwoByte);
}
nsString::nsString(const PRUnichar* aString) {
Initialize(*this,eTwoByte);
Assign(aString);
}
/**
* This constructor accepts a unicode string
* @update gess 1/4/99
* @param aString is a ptr to a unichar string
* @param aLength tells us how many chars to copy from given aString
*/
nsString::nsString(const PRUnichar* aString,PRInt32 aCount) {
Initialize(*this,eTwoByte);
Assign(aString,aCount);
}
/**
* This is our copy constructor
* @update gess 1/4/99
* @param reference to another nsString
*/
nsString::nsString(const nsString& aString) {
Initialize(*this,eTwoByte);
StrAssign(*this,aString,0,aString.mLength);
}
/**
* construct from subsumeable string
* @update gess 1/4/99
* @param reference to a subsumeString
*/
#if defined(AIX) || defined(XP_OS2_VACPP)
nsString::nsString(const nsSubsumeStr& aSubsumeStr) {
Initialize(*this,eTwoByte);
nsSubsumeStr temp(aSubsumeStr); // a temp is needed for the AIX and VAC++ compilers
Subsume(*this,temp);
#else
nsString::nsString(nsSubsumeStr& aSubsumeStr) {
Initialize(*this,eTwoByte);
Subsume(*this,aSubsumeStr);
#endif /* AIX || XP_OS2_VACPP */
}
/**
* Destructor
* Make sure we call nsStr::Destroy.
*/
nsString::~nsString() {
nsStr::Destroy(*this);
}
const PRUnichar* nsString::GetReadableFragment( nsReadableFragment<PRUnichar>& aFragment, nsFragmentRequest aRequest, PRUint32 aOffset ) const {
switch ( aRequest ) {
case kFirstFragment:
case kLastFragment:
case kFragmentAt:
aFragment.mEnd = (aFragment.mStart = mUStr) + mLength;
return aFragment.mStart + aOffset;
case kPrevFragment:
case kNextFragment:
default:
return 0;
}
}
PRUnichar* nsString::GetWritableFragment( nsWritableFragment<PRUnichar>& aFragment, nsFragmentRequest aRequest, PRUint32 aOffset ) {
switch ( aRequest ) {
case kFirstFragment:
case kLastFragment:
case kFragmentAt:
aFragment.mEnd = (aFragment.mStart = mUStr) + mLength;
return aFragment.mStart + aOffset;
case kPrevFragment:
case kNextFragment:
default:
return 0;
}
}
void
nsString::do_AppendFromElement( PRUnichar inChar )
{
PRUnichar buf[2] = { 0, 0 };
buf[0] = inChar;
nsStr temp;
nsStr::Initialize(temp, eTwoByte);
temp.mUStr = buf;
temp.mLength = 1;
StrAppend(*this, temp, 0, 1);
}
nsString::nsString( const nsAReadableString& aReadable ) {
Initialize(*this,eTwoByte);
Assign(aReadable);
}
void nsString::SizeOf(nsISizeOfHandler* aHandler, PRUint32* aResult) const {
if (aResult) {
*aResult = sizeof(*this) + mCapacity * mCharSize;
}
}
/**
* This method truncates this string to given length.
*
* @update gess 01/04/99
* @param anIndex -- new length of string
* @return nada
*/
void nsString::SetLength(PRUint32 anIndex) {
if ( anIndex > mCapacity )
SetCapacity(anIndex);
// |SetCapacity| normally doesn't guarantee the use we are putting it to here (see its interface comment in nsAWritableString.h),
// we can only use it since our local implementation, |nsString::SetCapacity|, is known to do what we want
nsStr::StrTruncate(*this,anIndex);
}
/**
* Call this method if you want to force the string to a certain capacity;
* |SetCapacity(0)| discards associated storage.
*
* @param aNewCapacity -- desired minimum capacity
*/
void
nsString::SetCapacity( PRUint32 aNewCapacity )
{
if ( aNewCapacity )
{
if( aNewCapacity > mCapacity )
GrowCapacity(*this, aNewCapacity);
AddNullTerminator(*this);
}
else
{
nsStr::Destroy(*this);
nsStr::Initialize(*this, eTwoByte);
}
}
/**********************************************************************
Accessor methods...
*********************************************************************/
//static char gChar=0;
/**
*
* @update gess1/4/99
* @return ptr to internal buffer (if 1-byte), otherwise NULL
*/
const char* nsString::GetBuffer(void) const {
const char* result=(eOneByte==mCharSize) ? mStr : 0;
return result;
}
/**
* This method returns the internal unicode buffer.
* Now that we've factored the string class, this should never
* be able to return a 1 byte string.
*
* @update gess1/4/99
* @return ptr to internal (2-byte) buffer;
*/
const PRUnichar* nsString::GetUnicode(void) const {
const PRUnichar* result=(eOneByte==mCharSize) ? 0 : mUStr;
return result;
}
/**
* set a char inside this string at given index
* @param aChar is the char you want to write into this string
* @param anIndex is the ofs where you want to write the given char
* @return TRUE if successful
*/
PRBool nsString::SetCharAt(PRUnichar aChar,PRUint32 anIndex){
PRBool result=PR_FALSE;
if(anIndex<mLength){
if(eOneByte==mCharSize)
mStr[anIndex]=char(aChar);
else mUStr[anIndex]=aChar;
// SOON! if(0==aChar) mLength=anIndex;
result=PR_TRUE;
}
return result;
}
/*********************************************************
append (operator+) METHODS....
*********************************************************/
/**********************************************************************
Lexomorphic transforms...
*********************************************************************/
/**
* Converts all chars in internal string to lower
* @update gess 01/04/99
*/
void nsString::ToLowerCase() {
nsStr::ChangeCase(*this,PR_FALSE);
}
/**
* Converts all chars in internal string to upper
* @update gess 01/04/99
*/
void nsString::ToUpperCase() {
nsStr::ChangeCase(*this,PR_TRUE);
}
/**
* Converts chars in this to uppercase, and
* stores them in aString
* @update gess 01/04/99
* @param aOut is a string to contain result
*/
void nsString::ToLowerCase(nsString& aString) const {
aString=*this;
nsStr::ChangeCase(aString,PR_FALSE);
}
/**
* Converts chars in this to uppercase, and
* stores them in a given output string
* @update gess 01/04/99
* @param aOut is a string to contain result
*/
void nsString::ToUpperCase(nsString& 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 rickg 03.23.2000
* @param aChar -- char to be stripped
* @param anOffset -- where in this string to start stripping chars
* @return *this
*/
void
nsString::StripChar(PRUnichar aChar,PRInt32 anOffset){
if(mLength && (anOffset<PRInt32(mLength))) {
if(eOneByte==mCharSize) {
char* to = mStr + anOffset;
char* from = mStr + anOffset;
char* end = mStr + mLength;
while (from < end) {
char theChar = *from++;
if(aChar!=theChar) {
*to++ = theChar;
}
}
*to = 0; //add the null
mLength=to - mStr;
}
else {
PRUnichar* to = mUStr + anOffset;
PRUnichar* from = mUStr + anOffset;
PRUnichar* end = mUStr + mLength;
while (from < end) {
PRUnichar theChar = *from++;
if(aChar!=theChar) {
*to++ = theChar;
}
}
*to = 0; //add the null
mLength=to - mUStr;
}
}
}
/**
* 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
*/
void
nsString::StripChars(const char* aSet){
nsStr::StripChars(*this,aSet);
}
/**
* This method strips whitespace throughout the string
*
* @update gess 01/04/99
* @return this
*/
void
nsString::StripWhitespace() {
StripChars(kWhitespace);
}
/**
* This method is used to replace all occurances of the
* given source char with the given dest char
*
* @param
* @return *this
*/
void
nsString::ReplaceChar(PRUnichar aSourceChar, PRUnichar aDestChar) {
PRUint32 theIndex=0;
if(eTwoByte==mCharSize){
for(theIndex=0;theIndex<mLength;theIndex++){
if(mUStr[theIndex]==aSourceChar) {
mUStr[theIndex]=aDestChar;
}//if
}
}
else{
for(theIndex=0;theIndex<mLength;theIndex++){
if(mStr[theIndex]==(char)aSourceChar) {
mStr[theIndex]=(char)aDestChar;
}//if
}
}
}
/**
* This method is used to replace all occurances of the
* given source char with the given dest char
*
* @param
* @return *this
*/
void
nsString::ReplaceChar(const char* aSet, PRUnichar aNewChar){
if(aSet){
PRInt32 theIndex=FindCharInSet(aSet,0);
while(kNotFound<theIndex) {
if(eTwoByte==mCharSize)
mUStr[theIndex]=aNewChar;
else mStr[theIndex]=(char)aNewChar;
theIndex=FindCharInSet(aSet,theIndex+1);
}
}
}
/**
* This method is used to replace all occurances of the
* given target with the given replacement
*
* @param
* @return *this
*/
void
nsString::ReplaceSubstring(const PRUnichar* aTarget,const PRUnichar* aNewValue){
if(aTarget && aNewValue) {
PRInt32 len=nsCRT::strlen(aTarget);
if(0<len) {
CBufDescriptor theDesc1(aTarget,PR_TRUE, len+1,len);
nsAutoString theTarget(theDesc1);
len=nsCRT::strlen(aNewValue);
if(0<len) {
CBufDescriptor theDesc2(aNewValue,PR_TRUE, len+1,len);
nsAutoString theNewValue(theDesc2);
ReplaceSubstring(theTarget,theNewValue);
}
}
}
}
/**
* This method is used to replace all occurances of the
* given target substring with the given replacement substring
*
* @param aTarget
* @param aNewValue
* @return *this
*/
void
nsString::ReplaceSubstring(const nsString& aTarget,const nsString& 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,mLength))) {
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;
StrInsert(*this,theIndex,aNewValue,0,theInsLen);
}
nsStr::Overwrite(*this,aNewValue,theIndex);
}
}
}
}
/**
* 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
*/
void
nsString::Trim(const char* aTrimSet, PRBool aEliminateLeading,PRBool aEliminateTrailing,PRBool aIgnoreQuotes){
if(aTrimSet){
PRUnichar theFirstChar=0;
PRUnichar theLastChar=0;
PRBool theQuotesAreNeeded=PR_FALSE;
if(aIgnoreQuotes && (mLength>2)) {
theFirstChar=First();
theLastChar=Last();
if(theFirstChar==theLastChar) {
if(('\''==theFirstChar) || ('"'==theFirstChar)) {
Cut(0,1);
Truncate(mLength-1);
theQuotesAreNeeded=PR_TRUE;
}
else theFirstChar=0;
}
}
nsStr::Trim(*this,aTrimSet,aEliminateLeading,aEliminateTrailing);
if(aIgnoreQuotes && theQuotesAreNeeded) {
Insert(theFirstChar,0);
Append(theLastChar);
}
}
}
/**
* This method strips chars in given set from string.
* You can control whether chars are 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
*/
void
nsString::CompressSet(const char* aSet, PRUnichar aChar,PRBool aEliminateLeading,PRBool aEliminateTrailing){
if(aSet){
ReplaceChar(aSet,aChar);
nsStr::CompressSet(*this,aSet,aEliminateLeading,aEliminateTrailing);
}
}
/**
* 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
*/
void
nsString::CompressWhitespace( PRBool aEliminateLeading,PRBool aEliminateTrailing){
CompressSet(kWhitespace,' ',aEliminateLeading,aEliminateTrailing);
}
/**********************************************************************
string conversion methods...
*********************************************************************/
/**
* Creates a duplicate clone (ptr) of this string.
* @update gess 01/04/99
* @return ptr to clone of this string
*/
nsString* nsString::ToNewString() const {
return new nsString(*this);
}
/**
* Creates an ascii clone of this string
* Note that calls to this method should be matched with calls to Recycle().
* @update gess 02/24/00
* @WARNING! Potential i18n issue here, since we're stepping down from 2byte chars to 1byte chars!
* @return ptr to new ascii string
*/
char* nsString::ToNewCString() const {
char* result = NS_STATIC_CAST(char*, nsMemory::Alloc(mLength + 1));
if (result) {
CBufDescriptor desc(result, PR_TRUE, mLength + 1, 0);
nsCAutoString temp(desc);
temp.AssignWithConversion(*this);
}
return result;
}
/**
* Creates an UTF8 clone of this string
* Note that calls to this method should be matched with calls to Recycle().
* @update ftang 09/10/99
* @return ptr to new UTF8 string
* http://www.cis.ohio-state.edu/htbin/rfc/rfc2279.html
*/
char* nsString::ToNewUTF8String() const {
NS_ConvertUCS2toUTF8 temp(mUStr);
char* result;
if (temp.mOwnsBuffer) {
// We allocated. Trick the string into not freeing its buffer to
// avoid an extra allocation.
result = temp.mStr;
temp.mStr=0;
temp.mOwnsBuffer = PR_FALSE;
}
else {
// We didn't allocate a buffer, so we need to copy it out of the
// nsCAutoString's storage.
result = nsCRT::strdup(temp.mStr);
}
return result;
}
/**
* Creates an ascii clone of this string
* Note that calls to this method should be matched with calls to Recycle().
* @update gess 02/24/00
* @return ptr to new ascii string
*/
PRUnichar* nsString::ToNewUnicode() const {
return nsCRT::strdup(mUStr);
}
/**
* Copies contents of this string into he given buffer
* Note that if you provide me a buffer that is smaller than the length of
* this string, only the number of bytes that will fit are copied.
*
* @update gess 01/04/99
* @param aBuf
* @param aBufLength -- size of your external buffer (including null)
* @param anOffset -- THIS IS NOT USED AT THIS TIME!
* @return
*/
char* nsString::ToCString(char* aBuf, PRUint32 aBufLength,PRUint32 anOffset) const{
if(aBuf) {
// NS_ASSERTION(mLength<=aBufLength,"buffer smaller than string");
CBufDescriptor theDescr(aBuf,PR_TRUE,aBufLength,0);
nsCAutoString temp(theDescr);
nsStr::StrAssign(temp, *this, anOffset, PR_MIN(mLength, aBufLength-1));
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 nsString::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 decimal numeric string to int conversion.
* NOTE: In this version, we use the radix you give, even if it's wrong.
* @update gess 02/14/00
* @param aErrorCode will contain error if one occurs
* @param aRadix tells us what base to expect the given string in. kAutoDetect tells us to determine the radix.
* @return int rep of string value
*/
PRInt32 nsString::ToInteger(PRInt32* anErrorCode,PRUint32 aRadix) const {
PRUnichar* cp=mUStr;
PRInt32 theRadix=10; // base 10 unless base 16 detected, or overriden (aRadix != kAutoDetect)
PRInt32 result=0;
PRBool negate=PR_FALSE;
PRUnichar theChar=0;
//initial value, override if we find an integer
*anErrorCode=NS_ERROR_ILLEGAL_VALUE;
if(cp) {
//begin by skipping over leading chars that shouldn't be part of the number...
PRUnichar* endcp=cp+mLength;
PRBool done=PR_FALSE;
while((cp<endcp) && (!done)){
switch(*cp++) {
case 'a': case 'b': case 'c': case 'd': case 'e': case 'f':
case 'A': case 'B': case 'C': case 'D': case 'E': case 'F':
theRadix=16;
done=PR_TRUE;
break;
case '0': case '1': case '2': case '3': case '4':
case '5': case '6': case '7': case '8': case '9':
done=PR_TRUE;
break;
case '-':
negate=PR_TRUE; //fall through...
break;
case 'X': case 'x':
theRadix=16;
break;
default:
break;
} //switch
}
if (done) {
//integer found
*anErrorCode = NS_OK;
if (aRadix!=kAutoDetect) theRadix = aRadix; // override
//now iterate the numeric chars and build our result
PRUnichar* first=--cp; //in case we have to back up.
while(cp<endcp){
theChar=*cp++;
if(('0'<=theChar) && (theChar<='9')){
result = (theRadix * result) + (theChar-'0');
}
else if((theChar>='A') && (theChar<='F')) {
if(10==theRadix) {
if(kAutoDetect==aRadix){
theRadix=16;
cp=first; //backup
result=0;
}
else {
*anErrorCode=NS_ERROR_ILLEGAL_VALUE;
result=0;
break;
}
}
else {
result = (theRadix * result) + ((theChar-'A')+10);
}
}
else if((theChar>='a') && (theChar<='f')) {
if(10==theRadix) {
if(kAutoDetect==aRadix){
theRadix=16;
cp=first; //backup
result=0;
}
else {
*anErrorCode=NS_ERROR_ILLEGAL_VALUE;
result=0;
break;
}
}
else {
result = (theRadix * result) + ((theChar-'a')+10);
}
}
else if(('X'==theChar) || ('x'==theChar) || ('#'==theChar) || ('+'==theChar)) {
continue;
}
else {
//we've encountered a char that's not a legal number or sign
break;
}
} //while
if(negate)
result=-result;
} //if
}
return result;
}
/**********************************************************************
String manipulation methods...
*********************************************************************/
/**
* assign given char* to this string
* @update gess 01/04/99
* @param aCString: buffer to be assigned to this
* @param aCount -- length of given buffer or -1 if you want me to compute length.
* NOTE: IFF you pass -1 as aCount, then your buffer must be null terminated.
*
* @return this
*/
void nsString::AssignWithConversion(const char* aCString,PRInt32 aCount) {
nsStr::StrTruncate(*this,0);
if(aCString){
AppendWithConversion(aCString,aCount);
}
}
void nsString::AssignWithConversion(const char* aCString) {
nsStr::StrTruncate(*this,0);
if(aCString){
AppendWithConversion(aCString);
}
}
/**
* assign given char to this string
* @update gess 01/04/99
* @param aChar: char to be assignd to this
* @return this
*/
void nsString::AssignWithConversion(char aChar) {
nsStr::StrTruncate(*this,0);
AppendWithConversion(aChar);
}
/**
* append given c-string to this string
* @update gess 01/04/99
* @param aString : string to be appended to this
* @param aCount -- length of given buffer or -1 if you want me to compute length.
* NOTE: IFF you pass -1 as aCount, then your buffer must be null terminated.
*
* @return this
*/
void nsString::AppendWithConversion(const char* aCString,PRInt32 aCount) {
if(aCString && aCount){ //if astring is null or count==0 there's nothing to do
nsStr temp;
nsStr::Initialize(temp,eOneByte);
temp.mStr=(char*)aCString;
if(0<aCount) {
temp.mLength=aCount;
// If this assertion fires, the caller is probably lying about the length of
// the passed-in string. File a bug on the caller.
#ifdef NS_DEBUG
PRInt32 len=nsStr::FindChar(temp,0,PR_FALSE,0,temp.mLength);
if(kNotFound<len) {
NS_WARNING(kPossibleNull);
}
#endif
}
else aCount=temp.mLength=nsCRT::strlen(aCString);
if(0<aCount)
StrAppend(*this,temp,0,aCount);
}
}
/**
* append given char to this string
* @update gess 01/04/99
* @param aChar: char to be appended
* @return this
*/
void nsString::AppendWithConversion(char aChar) {
char buf[2]={0,0};
buf[0]=aChar;
nsStr temp;
nsStr::Initialize(temp,eOneByte);
temp.mStr=buf;
temp.mLength=1;
StrAppend(*this,temp,0,1);
}
/**
* Append the given integer to this string
* @update gess 01/04/99
* @param aInteger:
* @param aRadix:
* @return
*/
void nsString::AppendInt(PRInt32 anInteger,PRInt32 aRadix) {
PRUint32 theInt=(PRUint32)anInteger;
char buf[]={'0',0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0};
PRInt32 radices[] = {1000000000,268435456};
PRInt32 mask1=radices[16==aRadix];
PRInt32 charpos=0;
if(anInteger<0) {
theInt*=-1;
if(10==aRadix) {
buf[charpos++]='-';
}
else theInt=(int)~(theInt-1);
}
PRBool isfirst=PR_TRUE;
while(mask1>=1) {
PRInt32 theDiv=theInt/mask1;
if((theDiv) || (!isfirst)) {
buf[charpos++]="0123456789abcdef"[theDiv];
isfirst=PR_FALSE;
}
theInt-=theDiv*mask1;
mask1/=aRadix;
}
AppendWithConversion(buf);
}
/**
* Append the given float to this string
* @update gess 01/04/99
* @param aFloat:
* @return
*/
void nsString::AppendFloat(double aFloat){
char buf[40];
// *** XX UNCOMMENT THIS LINE
//PR_snprintf(buf, sizeof(buf), "%g", aFloat);
sprintf(buf,"%g",aFloat);
AppendWithConversion(buf);
}
/**
* Insert a char* into this string at a specified offset.
*
* @update gess4/22/98
* @param char* aCString to be inserted into this string
* @param anOffset is insert pos in str
* @param aCount -- length of given buffer or -1 if you want me to compute length.
* NOTE: IFF you pass -1 as aCount, then your buffer must be null terminated.
*
* @return this
*/
void nsString::InsertWithConversion(const char* aCString,PRUint32 anOffset,PRInt32 aCount){
if(aCString && aCount){
nsStr temp;
nsStr::Initialize(temp,eOneByte);
temp.mStr=(char*)aCString;
if(0<aCount) {
temp.mLength=aCount;
// If this assertion fires, the caller is probably lying about the length of
// the passed-in string. File a bug on the caller.
#ifdef NS_DEBUG
PRInt32 len=nsStr::FindChar(temp,0,PR_FALSE,0,temp.mLength);
if(kNotFound<len) {
NS_WARNING(kPossibleNull);
}
#endif
}
else aCount=temp.mLength=nsCRT::strlen(aCString);
if(0<aCount){
StrInsert(*this,anOffset,temp,0,aCount);
}
}
}
/**********************************************************************
Searching methods...
*********************************************************************/
/**
* search for given string within this string
*
* @update gess 3/25/98
* @param aString - substr to be found
* @param aIgnoreCase tells us whether or not to do caseless compare
* @param anOffset tells us where in this string to start searching
* @param aCount tells us how many iterations to make starting at the given offset
* @return offset in string, or -1 (kNotFound)
*/
PRInt32 nsString::Find(const char* aCString,PRBool aIgnoreCase,PRInt32 anOffset,PRInt32 aCount) const{
NS_ASSERTION(0!=aCString,kNullPointerError);
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,aCount);
}
return result;
}
/**
* search for given string within this string
*
* @update gess 3/25/98
* @param aString - substr to be found
* @param aIgnoreCase tells us whether or not to do caseless compare
* @param anOffset tells us where in this string to start searching
* @param aCount tells us how many iterations to make starting at the given offset
* @return offset in string, or -1 (kNotFound)
*/
PRInt32 nsString::Find(const PRUnichar* aString,PRBool aIgnoreCase,PRInt32 anOffset,PRInt32 aCount) const{
NS_ASSERTION(0!=aString,kNullPointerError);
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,aCount);
}
return result;
}
/**
* Search for given string within this string
*
* @update gess 3/25/98
* @param aString - substr to be found
* @param aIgnoreCase tells us whether or not to do caseless compare
* @param anOffset tells us where in this string to start searching
* @param aCount tells us how many iterations to make starting at the given offset
* @return offset in string, or -1 (kNotFound)
*/
PRInt32 nsString::Find(const nsStr& aString,PRBool aIgnoreCase,PRInt32 anOffset,PRInt32 aCount) const{
PRInt32 result=nsStr::FindSubstr(*this,aString,aIgnoreCase,anOffset,aCount);
return result;
}
/**
* search for given string within this string
*
* @update gess 3/25/98
* @param aString - substr to be found
* @param aIgnoreCase tells us whether or not to do caseless compare
* @param anOffset tells us where in this string to start searching
* @param aCount tells us how many iterations to make starting at the given offset
* @return offset in string, or -1 (kNotFound)
*/
PRInt32 nsString::Find(const nsString& aString,PRBool aIgnoreCase,PRInt32 anOffset,PRInt32 aCount) const{
PRInt32 result=nsStr::FindSubstr(*this,aString,aIgnoreCase,anOffset,aCount);
return result;
}
/**
* Search for a given char, starting at given offset
*
* @update gess 3/25/98
* @param aChar
* @return offset of found char, or -1 (kNotFound)
*/
#if 0
PRInt32 nsString::Find(PRUnichar aChar,PRInt32 anOffset,PRBool aIgnoreCase) const{
PRInt32 result=nsStr::FindChar(*this,aChar,aIgnoreCase,anOffset);
return result;
}
#endif
/**
* Search for a given char, starting at given offset
*
* @update gess 3/25/98
* @param aChar is the unichar to be sought
* @param aIgnoreCase tells us whether or not to do caseless compare
* @param anOffset tells us where in this string to start searching
* @param aCount tells us how many iterations to make starting at the given offset
* @return offset in string, or -1 (kNotFound)
*/
PRInt32 nsString::FindChar(PRUnichar aChar,PRBool aIgnoreCase,PRInt32 anOffset,PRInt32 aCount) const{
PRInt32 result=nsStr::FindChar(*this,aChar,aIgnoreCase,anOffset,aCount);
return result;
}
/**
* This method finds the offset of the first char in this string that is
* a member of the given charset, starting the search at anOffset
*
* @update gess 3/25/98
* @param aCStringSet
* @param anOffset -- where in this string to start searching
* @return
*/
PRInt32 nsString::FindCharInSet(const char* aCStringSet,PRInt32 anOffset) const{
NS_ASSERTION(0!=aCStringSet,kNullPointerError);
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;
}
/**
* This method finds the offset of the first char in this string that is
* a member of the given charset, starting the search at anOffset
*
* @update gess 3/25/98
* @param aCStringSet
* @param anOffset -- where in this string to start searching
* @return
*/
PRInt32 nsString::FindCharInSet(const PRUnichar* aStringSet,PRInt32 anOffset) const{
NS_ASSERTION(0!=aStringSet,kNullPointerError);
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;
}
/**
* This method finds the offset of the first char in this string that is
* a member of the given charset, starting the search at anOffset
*
* @update gess 3/25/98
* @param aCStringSet
* @param anOffset -- where in this string to start searching
* @return
*/
PRInt32 nsString::FindCharInSet(const nsStr& aSet,PRInt32 anOffset) const{
PRInt32 result=nsStr::FindCharInSet(*this,aSet,PR_FALSE,anOffset);
return result;
}
/**
* Reverse search for given string within this string
*
* @update gess 3/25/98
* @param aString - substr to be found
* @param aIgnoreCase tells us whether or not to do caseless compare
* @param anOffset tells us where in this string to start searching
* @param aCount tells us how many iterations to make starting at the given offset
* @return offset in string, or -1 (kNotFound)
*/
PRInt32 nsString::RFind(const nsStr& aString,PRBool aIgnoreCase,PRInt32 anOffset,PRInt32 aCount) const{
PRInt32 result=nsStr::RFindSubstr(*this,aString,aIgnoreCase,anOffset,aCount);
return result;
}
/**
* Reverse search for given string within this string
*
* @update gess 3/25/98
* @param aString - substr to be found
* @param aIgnoreCase tells us whether or not to do caseless compare
* @param anOffset tells us where in this string to start searching
* @param aCount tells us how many iterations to make starting at the given offset
* @return offset in string, or -1 (kNotFound)
*/
PRInt32 nsString::RFind(const nsString& aString,PRBool aIgnoreCase,PRInt32 anOffset,PRInt32 aCount) const{
PRInt32 result=nsStr::RFindSubstr(*this,aString,aIgnoreCase,anOffset,aCount);
return result;
}
/**
* Reverse search for given string within this string
*
* @update gess 3/25/98
* @param aString - substr to be found
* @param aIgnoreCase tells us whether or not to do caseless compare
* @param anOffset tells us where in this string to start searching
* @param aCount tells us how many iterations to make starting at the given offset
* @return offset in string, or -1 (kNotFound)
*/
PRInt32 nsString::RFind(const char* aString,PRBool aIgnoreCase,PRInt32 anOffset,PRInt32 aCount) const{
NS_ASSERTION(0!=aString,kNullPointerError);
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,aCount);
}
return result;
}
/**
* Reverse search for char
*
* @update gess 3/25/98
* @param achar
* @param aIgnoreCase
* @param anOffset - tells us where to begin the search
* @return offset of substring or -1
*/
#if 0
PRInt32 nsString::RFind(PRUnichar aChar,PRInt32 anOffset,PRBool aIgnoreCase) const{
PRInt32 result=nsStr::RFindChar(*this,aChar,aIgnoreCase,anOffset);
return result;
}
#endif
/**
* Reverse search for a given char, starting at given offset
*
* @update gess 3/25/98
* @param aChar
* @param aIgnoreCase
* @param anOffset
* @return offset of found char, or -1 (kNotFound)
*/
PRInt32 nsString::RFindChar(PRUnichar aChar,PRBool aIgnoreCase,PRInt32 anOffset,PRInt32 aCount) const{
PRInt32 result=nsStr::RFindChar(*this,aChar,aIgnoreCase,anOffset,aCount);
return result;
}
/**
* Reverse search for char in this string that is also a member of given charset
*
* @update gess 3/25/98
* @param aCStringSet
* @param anOffset
* @return offset of found char, or -1 (kNotFound)
*/
PRInt32 nsString::RFindCharInSet(const char* aCStringSet,PRInt32 anOffset) const{
NS_ASSERTION(0!=aCStringSet,kNullPointerError);
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;
}
/**
* Reverse search for a first char in this string that is a
* member of the given char set
*
* @update gess 3/25/98
* @param aSet
* @param aIgnoreCase
* @param anOffset
* @return offset of found char, or -1 (kNotFound)
*/
PRInt32 nsString::RFindCharInSet(const nsStr& aSet,PRInt32 anOffset) const{
PRInt32 result=nsStr::RFindCharInSet(*this,aSet,PR_FALSE,anOffset);
return result;
}
/**
* Reverse search for a first char in this string that is a
* member of the given char set
*
* @update gess 3/25/98
* @param aSet
* @param aIgnoreCase
* @param anOffset
* @return offset of found char, or -1 (kNotFound)
*/
PRInt32 nsString::RFindCharInSet(const PRUnichar* aStringSet,PRInt32 anOffset) const{
NS_ASSERTION(0!=aStringSet,kNullPointerError);
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;
}
/**************************************************************
COMPARISON METHODS...
**************************************************************/
/**
* Compares given cstring to this string.
* @update gess 01/04/99
* @param aCString pts 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 nsString::CompareWithConversion(const char *aCString,PRBool aIgnoreCase,PRInt32 aCount) const {
NS_ASSERTION(0!=aCString,kNullPointerError);
if(aCString) {
nsStr temp;
nsStr::Initialize(temp,eOneByte);
temp.mLength= (0<aCount) ? aCount : nsCRT::strlen(aCString);
temp.mStr=(char*)aCString;
return nsStr::StrCompare(*this,temp,aCount,aIgnoreCase);
}
return 0;
}
/**
* Compares given cstring to this string.
* @update gess 01/04/99
* @param aCString pts 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 nsString::CompareWithConversion(const nsString& aString,PRBool aIgnoreCase,PRInt32 aCount) const {
PRInt32 result=nsStr::StrCompare(*this,aString,aCount,aIgnoreCase);
return result;
}
/**
* 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 nsString::CompareWithConversion(const PRUnichar* aString,PRBool aIgnoreCase,PRInt32 aCount) const {
NS_ASSERTION(0!=aString,kNullPointerError);
if(aString) {
nsStr temp;
nsStr::Initialize(temp,eTwoByte);
temp.mLength=nsCRT::strlen(aString);
temp.mUStr=(PRUnichar*)aString;
return nsStr::StrCompare(*this,temp,aCount,aIgnoreCase);
}
return 0;
}
PRBool nsString::EqualsIgnoreCase(const nsString& aString) const {
return EqualsWithConversion(aString,PR_TRUE);
}
PRBool nsString::EqualsIgnoreCase(const char* aString,PRInt32 aLength) const {
return EqualsWithConversion(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 nsString to be compared to
* @param aCount tells us how many chars to test; -1 implies full length
* @return TRUE if equal
*/
PRBool nsString::EqualsWithConversion(const nsString& aString,PRBool aIgnoreCase,PRInt32 aCount) const {
PRInt32 theAnswer=nsStr::StrCompare(*this,aString,aCount,aIgnoreCase);
PRBool result=PRBool(0==theAnswer);
return result;
}
/**
* Compare this to given c-string; note that we compare full strings here.
*
* @param aString is the CString to be compared
* @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 nsString::EqualsWithConversion(const char* aString,PRBool aIgnoreCase,PRInt32 aCount) const {
PRInt32 theAnswer=CompareWithConversion(aString,aIgnoreCase,aCount);
PRBool result=PRBool(0==theAnswer);
return result;
}
/**
* Compare this to given unicode string; note that we compare full strings here.
*
* @param aString is the U-String to be compared
* @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 nsString::EqualsWithConversion(const PRUnichar* aString,PRBool aIgnoreCase,PRInt32 aCount) const {
PRInt32 theAnswer=CompareWithConversion(aString,aIgnoreCase,aCount);
PRBool result=PRBool(0==theAnswer);
return result;
}
/**
* Compare this to given atom; note that we compare full strings here.
* The optional length argument just lets us know how long the given string is.
* If you provide a length, it is compared to length of this string as an
* optimization.
*
* @update gess 01/04/99
* @param aString -- unistring to compare to this
* @param aLength -- length of given string.
* @return TRUE if equal
*/
PRBool nsString::EqualsAtom(/*FIX: const */nsIAtom* aAtom,PRBool aIgnoreCase) const{
NS_ASSERTION(0!=aAtom,kNullPointerError);
PRBool result=PR_FALSE;
if(aAtom){
PRInt32 cmp=0;
const PRUnichar* unicode;
if (aAtom->GetUnicode(&unicode) != NS_OK || unicode == nsnull)
return PR_FALSE;
if (aIgnoreCase)
cmp=nsCRT::strcasecmp(mUStr,unicode);
else
cmp=nsCRT::strcmp(mUStr,unicode);
result=PRBool(0==cmp);
}
return result;
}
PRBool nsString::EqualsIgnoreCase(/*FIX: const */nsIAtom *aAtom) const {
return EqualsAtom(aAtom,PR_TRUE);
}
/**
* Determine if given char in valid alpha range
*
* @update gess 3/31/98
* @param aChar is character to be tested
* @return TRUE if in alpha range
*/
PRBool nsString::IsAlpha(PRUnichar aChar) {
// XXX i18n
if (((aChar >= 'A') && (aChar <= 'Z')) || ((aChar >= 'a') && (aChar <= 'z'))) {
return PR_TRUE;
}
return PR_FALSE;
}
/**
* Determine if given char is a valid space character
*
* @update gess 3/31/98
* @param aChar is character to be tested
* @return TRUE if is valid space char
*/
PRBool nsString::IsSpace(PRUnichar aChar) {
// XXX i18n
if ((aChar == ' ') || (aChar == '\r') || (aChar == '\n') || (aChar == '\t')) {
return PR_TRUE;
}
return PR_FALSE;
}
/**
* Determine if given buffer contains plain ascii
*
* @param aBuffer -- if null, then we test *this, otherwise we test given buffer
* @return TRUE if is all ascii chars, or if strlen==0
*/
PRBool nsString::IsASCII(const PRUnichar* aBuffer) {
if(!aBuffer) {
if(eOneByte==mCharSize) {
char* aByte = mStr;
while(*aByte) {
if(*aByte & 0x80) { // don't use (*aByte > 0x7F) since char is signed
return PR_FALSE;
}
aByte++;
}
return PR_TRUE;
} else {
aBuffer=mUStr; // let the following code handle it
}
}
if(aBuffer) {
while(*aBuffer) {
if(*aBuffer>0x007F){
return PR_FALSE;
}
aBuffer++;
}
}
return PR_TRUE;
}
/**
* Determine if given char is valid digit
*
* @update gess 3/31/98
* @param aChar is character to be tested
* @return TRUE if char is a valid digit
*/
PRBool nsString::IsDigit(PRUnichar aChar) {
// XXX i18n
return PRBool((aChar >= '0') && (aChar <= '9'));
}
#ifndef RICKG_TESTBED
/**************************************************************
Define the string deallocator class...
**************************************************************/
class nsStringDeallocator: public nsDequeFunctor{
public:
virtual void* operator()(void* anObject) {
nsString* aString= (nsString*)anObject;
if(aString){
delete aString;
}
return 0;
}
};
/****************************************************************************
* This class, appropriately enough, creates and recycles nsString objects..
****************************************************************************/
class nsStringRecycler {
public:
nsStringRecycler() : mDeque(0) {
}
~nsStringRecycler() {
nsStringDeallocator theDeallocator;
mDeque.ForEach(theDeallocator); //now delete the strings
}
void Recycle(nsString* aString) {
mDeque.Push(aString);
}
nsString* CreateString(void){
nsString* result=(nsString*)mDeque.Pop();
if(!result)
result=new nsString();
return result;
}
nsDeque mDeque;
};
static nsStringRecycler& GetRecycler(void);
/**
*
* @update gess 01/04/99
* @param
* @return
*/
nsStringRecycler& GetRecycler(void){
static nsStringRecycler gRecycler;
return gRecycler;
}
#endif
/**
* Call this mehod when you're done
* @update gess 01/04/99
* @param
* @return
*/
nsString* nsString::CreateString(void){
nsString* result=0;
#ifndef RICKG_TESTBED
GetRecycler().CreateString();
#endif
return result;
}
/**
* Call this mehod when you're done
* @update gess 01/04/99
* @param
* @return
*/
void nsString::Recycle(nsString* aString){
#ifndef RICKG_TESTBED
GetRecycler().Recycle(aString);
#else
delete aString;
#endif
}
#if 0
/**
*
* @update gess8/8/98
* @param
* @return
*/
ostream& operator<<(ostream& aStream,const nsString& 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
/**
*
* @update gess 01/04/99
* @param
* @return
*/
NS_COM int fputs(const nsString& aString, FILE* out)
{
char buf[100];
char* cp = buf;
PRInt32 len = aString.mLength;
if (len >= PRInt32(sizeof(buf))) {
cp = aString.ToNewCString();
} else {
aString.ToCString(cp, len + 1);
}
if(len>0)
::fwrite(cp, 1, len, out);
if (cp != buf) {
Recycle(cp);
}
return (int) len;
}
/**
* Dumps the contents of the string to stdout
* @update gess 11/15/99
*/
void nsString::DebugDump(void) const {
const char* theBuffer=mStr;
nsCAutoString temp;
if(eTwoByte==mCharSize) {
nsStr::StrAssign(temp, *this, 0, mLength);
theBuffer=temp.GetBuffer();
}
if(theBuffer) {
printf("\n%s",theBuffer);
}
}
/***********************************************************************
IMPLEMENTATION NOTES: AUTOSTRING...
***********************************************************************/
/**
* Default constructor
*
*/
nsAutoString::nsAutoString() : nsString() {
Initialize(*this,mBuffer,(sizeof(mBuffer)>>eTwoByte)-1,0,eTwoByte,PR_FALSE);
AddNullTerminator(*this);
}
nsAutoString::nsAutoString(const PRUnichar* aString) : nsString() {
Initialize(*this,mBuffer,(sizeof(mBuffer)>>eTwoByte)-1,0,eTwoByte,PR_FALSE);
AddNullTerminator(*this);
Append(aString);
}
/**
* Copy construct from uni-string
* @param aString is a ptr to a unistr
* @param aLength tells us how many chars to copy from aString
*/
nsAutoString::nsAutoString(const PRUnichar* aString,PRInt32 aLength) : nsString() {
Initialize(*this,mBuffer,(sizeof(mBuffer)>>eTwoByte)-1,0,eTwoByte,PR_FALSE);
AddNullTerminator(*this);
Append(aString,aLength);
}
nsAutoString::nsAutoString( const nsString& aString )
: nsString()
{
Initialize(*this, mBuffer, (sizeof(mBuffer)>>eTwoByte)-1, 0, eTwoByte, PR_FALSE);
AddNullTerminator(*this);
Append(aString);
}
nsAutoString::nsAutoString( const nsAReadableString& aString )
: nsString()
{
Initialize(*this, mBuffer, (sizeof(mBuffer)>>eTwoByte)-1, 0, eTwoByte, PR_FALSE);
AddNullTerminator(*this);
Append(aString);
}
/**
* constructor that uses external buffer
* @param aBuffer describes the external buffer
*/
nsAutoString::nsAutoString(const CBufDescriptor& aBuffer) : nsString() {
if(!aBuffer.mBuffer) {
Initialize(*this,mBuffer,(sizeof(mBuffer)>>eTwoByte)-1,0,eTwoByte,PR_FALSE);
}
else {
Initialize(*this,aBuffer.mBuffer,aBuffer.mCapacity,aBuffer.mLength,aBuffer.mCharSize,!aBuffer.mStackBased);
}
if(!aBuffer.mIsConst)
AddNullTerminator(*this);
}
NS_ConvertASCIItoUCS2::NS_ConvertASCIItoUCS2( const char* aCString, PRUint32 aLength )
{
Initialize(*this,mBuffer,(sizeof(mBuffer)>>eTwoByte)-1,0,eTwoByte,PR_FALSE);
AddNullTerminator(*this);
AppendWithConversion(aCString,aLength);
}
NS_ConvertASCIItoUCS2::NS_ConvertASCIItoUCS2( const char* aCString )
{
Initialize(*this,mBuffer,(sizeof(mBuffer)>>eTwoByte)-1,0,eTwoByte,PR_FALSE);
AddNullTerminator(*this);
AppendWithConversion(aCString);
}
NS_ConvertASCIItoUCS2::NS_ConvertASCIItoUCS2( char aChar )
{
Initialize(*this,mBuffer,(sizeof(mBuffer)>>eTwoByte)-1,0,eTwoByte,PR_FALSE);
AddNullTerminator(*this);
AppendWithConversion(aChar);
}
void
NS_ConvertUTF8toUCS2::Init( const char* aCString, PRUint32 aLength )
{
// Handle null string by just leaving us as a brand-new
// uninitialized nsAutoString.
if (! aCString)
return;
// Compute space required: do this once so we don't incur multiple
// allocations. This "optimization" is probably of dubious value...
const char* p;
PRUint32 count;
for (p = aCString, count = 0; *p && count < aLength; ++count) {
if ( 0 == (*p & 0x80) )
p += 1; // ASCII
else if ( 0xC0 == (*p & 0xE0) )
p += 2; // 2 byte UTF8
else if ( 0xE0 == (*p & 0xF0) )
p += 3; // 3 byte UTF8
else if ( 0xF0 == (*p & 0xF8) )
p += 4; // 4 byte UTF8
else if ( 0xF8 == (*p & 0xFC) )
p += 5; // 5 byte UTF8
else if ( 0xFC == (*p & 0xFE) )
p += 6;
else {
NS_ERROR("not a UTF-8 string");
return;
}
}
// Grow the buffer if we need to.
if ((count * sizeof(PRUnichar)) >= sizeof(mBuffer))
SetCapacity(count + 1);
// |SetCapacity| normally doesn't guarantee the use we are putting it to here (see its interface comment in nsAWritableString.h),
// we can only use it since our local implementation, |nsString::SetCapacity|, is known to do what we want
// We'll write directly into the new string's buffer
PRUnichar* out = mUStr;
// Convert the characters.
for (p = aCString, count = 0; *p && count < aLength; ++count) {
char c = *p++;
if( 0 == (0x80 & c)) { // ASCII
*out++ = PRUnichar(c);
continue;
}
PRUint32 ucs4;
PRInt32 state = 0;
if ( 0xC0 == (0xE0 & c) ) { // 2 bytes UTF8
ucs4 = (PRUint32(c) << 6) & 0x000007C0L;
state = 1;
}
else if ( 0xE0 == (0xF0 & c) ) { // 3 bytes UTF8
ucs4 = (PRUint32(c) << 12) & 0x0000F000L;
state = 2;
}
else if ( 0xF0 == (0xF8 & c) ) { // 4 bytes UTF8
ucs4 = (PRUint32(c) << 18) & 0x001F0000L;
state = 3;
}
else if ( 0xF8 == (0xFC & c) ) { // 5 bytes UTF8
ucs4 = (PRUint32(c) << 24) & 0x03000000L;
state = 4;
}
else if ( 0xFC == (0xFE & c) ) { // 6 bytes UTF8
ucs4 = (PRUint32(c) << 30) & 0x40000000L;
state = 5;
}
else {
NS_ERROR("not a UTF8 string");
break;
}
while (state--) {
c = *p++;
if ( 0x80 == (0xC0 & c) ) {
PRInt32 shift = state * 6;
ucs4 |= (PRUint32(c) & 0x3F) << shift;
}
else {
NS_ERROR("not a UTF8 string");
goto done; // so we minimally clean up
}
}
if (ucs4 >= 0x00010000) {
if (ucs4 >= 0x001F0000) {
*out++ = 0xFFFD;
}
else {
ucs4 -= 0x00010000;
*out++ = 0xD800 | (0x000003FF & (ucs4 >> 10));
*out++ = 0xDC00 | (0x000003FF & ucs4);
}
}
else {
if (0xfeff != ucs4) // ignore BOM
*out++ = ucs4;
}
}
done:
*out = '\0'; // null terminate
mLength = count;
}
#if 0
/**
* Copy construct from ascii c-string
* @param aCString is a ptr to a 1-byte cstr
* @param aLength tells us how many chars to copy from aCString
*/
nsAutoString::nsAutoString(const char* aCString,PRInt32 aLength) : nsString() {
Initialize(*this,mBuffer,(sizeof(mBuffer)>>eTwoByte)-1,0,eTwoByte,PR_FALSE);
AddNullTerminator(*this);
Append(aCString,aLength);
}
/**
* Copy construct from an nsStr
* @param
*/
nsAutoString::nsAutoString(const nsStr& aString) : nsString() {
Initialize(*this,mBuffer,(sizeof(mBuffer)>>eTwoByte)-1,0,eTwoByte,PR_FALSE);
AddNullTerminator(*this);
Append(aString);
}
#endif
/**
* Default copy constructor
*/
nsAutoString::nsAutoString(const nsAutoString& aString) : nsString() {
Initialize(*this,mBuffer,(sizeof(mBuffer)>>eTwoByte)-1,0,eTwoByte,PR_FALSE);
AddNullTerminator(*this);
Append(aString);
}
/**
* Copy construct from a unichar
* @param
*/
nsAutoString::nsAutoString(PRUnichar aChar) : nsString(){
Initialize(*this,mBuffer,(sizeof(mBuffer)>>eTwoByte)-1,0,eTwoByte,PR_FALSE);
AddNullTerminator(*this);
Append(aChar);
}
/**
* construct from a subsumeable string
* @update gess 1/4/99
* @param reference to a subsumeString
*/
#if defined(AIX) || defined(XP_OS2_VACPP)
nsAutoString::nsAutoString(const nsSubsumeStr& aSubsumeStr) :nsString() {
nsSubsumeStr temp(aSubsumeStr); // a temp is needed for the AIX and VAC++ compilers
Subsume(*this,temp);
#else
nsAutoString::nsAutoString( nsSubsumeStr& aSubsumeStr) :nsString() {
Subsume(*this,aSubsumeStr);
#endif // AIX || XP_OS2_VACPP
}
/**
* deconstruct the autstring
* @param
*/
nsAutoString::~nsAutoString(){
}
void nsAutoString::SizeOf(nsISizeOfHandler* aHandler, PRUint32* aResult) const {
if (aResult) {
*aResult = sizeof(*this) + mCapacity * mCharSize;
}
}
nsSubsumeStr::nsSubsumeStr() : nsString() {
}
nsSubsumeStr::nsSubsumeStr(nsStr& aString) : nsString() {
::Subsume(*this,aString);
}
nsSubsumeStr::nsSubsumeStr(PRUnichar* aString,PRBool assumeOwnership,PRInt32 aLength) : nsString() {
mUStr=aString;
mCharSize=eTwoByte;
mCapacity=mLength=(-1==aLength) ? nsCRT::strlen(aString) : aLength;
mOwnsBuffer=assumeOwnership;
}
nsSubsumeStr::nsSubsumeStr(char* aString,PRBool assumeOwnership,PRInt32 aLength) : nsString() {
mStr=aString;
mCharSize=eOneByte;
mCapacity=mLength=(-1==aLength) ? strlen(aString) : aLength;
mOwnsBuffer=assumeOwnership;
}
int nsSubsumeStr::Subsume(PRUnichar* aString,PRBool assumeOwnership,PRInt32 aLength) {
mUStr=aString;
mCharSize=eTwoByte;
mCapacity=mLength=(-1==aLength) ? nsCRT::strlen(aString) : aLength;
mOwnsBuffer=assumeOwnership;
return 0;
}
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