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gecko-dev/xpcom/ds/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 <iostream.h>
#include <ctype.h>
#include <string.h>
#include <stdio.h>
#include "nsString.h"
#include "nsCRT.h"
#include "nsDebug.h"
#include "prprf.h"
#include "prdtoa.h"
#include "nsISizeOfHandler.h"
#include "nsUnicharUtilCIID.h"
#include "nsIServiceManager.h"
#include "nsICaseConversion.h"
const PRInt32 kGrowthDelta = 8;
const PRInt32 kNotFound = -1;
PRUnichar gBadChar = 0;
const char* kOutOfBoundsError = "Error: out of bounds";
const char* kNullPointerError = "Error: unexpected null ptr";
const char* kFoolMsg = "Error: Some fool overwrote the shared buffer.";
PRUnichar kCommonEmptyBuffer[100]; //shared by all strings; NEVER WRITE HERE!!!
PRBool nsString::mSelfTested = PR_FALSE;
#define NOT_USED 0xfffd
static PRUint16 PA_HackTable[] = {
NOT_USED,
NOT_USED,
0x201a, /* SINGLE LOW-9 QUOTATION MARK */
0x0192, /* LATIN SMALL LETTER F WITH HOOK */
0x201e, /* DOUBLE LOW-9 QUOTATION MARK */
0x2026, /* HORIZONTAL ELLIPSIS */
0x2020, /* DAGGER */
0x2021, /* DOUBLE DAGGER */
0x02c6, /* MODIFIER LETTER CIRCUMFLEX ACCENT */
0x2030, /* PER MILLE SIGN */
0x0160, /* LATIN CAPITAL LETTER S WITH CARON */
0x2039, /* SINGLE LEFT-POINTING ANGLE QUOTATION MARK */
0x0152, /* LATIN CAPITAL LIGATURE OE */
NOT_USED,
NOT_USED,
NOT_USED,
NOT_USED,
0x2018, /* LEFT SINGLE QUOTATION MARK */
0x2019, /* RIGHT SINGLE QUOTATION MARK */
0x201c, /* LEFT DOUBLE QUOTATION MARK */
0x201d, /* RIGHT DOUBLE QUOTATION MARK */
0x2022, /* BULLET */
0x2013, /* EN DASH */
0x2014, /* EM DASH */
0x02dc, /* SMALL TILDE */
0x2122, /* TRADE MARK SIGN */
0x0161, /* LATIN SMALL LETTER S WITH CARON */
0x203a, /* SINGLE RIGHT-POINTING ANGLE QUOTATION MARK */
0x0153, /* LATIN SMALL LIGATURE OE */
NOT_USED,
NOT_USED,
0x0178 /* LATIN CAPITAL LETTER Y WITH DIAERESIS */
};
static PRUnichar gToUCS2[256];
class CTableConstructor {
public:
CTableConstructor(){
PRUnichar* cp = gToUCS2;
PRInt32 i;
for (i = 0; i < 256; i++) {
*cp++ = PRUnichar(i);
}
cp = gToUCS2;
for (i = 0; i < 32; i++) {
cp[0x80 + i] = PA_HackTable[i];
}
}
};
static CTableConstructor gTableConstructor;
//---- XPCOM code to connect with UnicharUtil
class HandleCaseConversionShutdown2 : public nsIShutdownListener {
public :
NS_IMETHOD OnShutdown(const nsCID& cid, nsISupports* service);
HandleCaseConversionShutdown2(void) { NS_INIT_REFCNT(); }
virtual ~HandleCaseConversionShutdown2(void) {}
NS_DECL_ISUPPORTS
};
static NS_DEFINE_CID(kUnicharUtilCID, NS_UNICHARUTIL_CID);
static NS_DEFINE_IID(kICaseConversionIID, NS_ICASECONVERSION_IID);
static nsICaseConversion * gCaseConv = NULL;
static NS_DEFINE_IID(kIShutdownListenerIID, NS_ISHUTDOWNLISTENER_IID);
NS_IMPL_ISUPPORTS(HandleCaseConversionShutdown2, kIShutdownListenerIID);
nsresult
HandleCaseConversionShutdown2::OnShutdown(const nsCID& cid, nsISupports* service)
{
if (cid.Equals(kUnicharUtilCID)) {
NS_ASSERTION(service == gCaseConv, "wrong service!");
nsrefcnt cnt = gCaseConv->Release();
gCaseConv = NULL;
}
return NS_OK;
}
static HandleCaseConversionShutdown2* gListener = NULL;
static void StartUpCaseConversion()
{
nsresult err;
if ( NULL == gListener )
{
gListener = new HandleCaseConversionShutdown2();
gListener->AddRef();
}
err = nsServiceManager::GetService(kUnicharUtilCID, kICaseConversionIID,
(nsISupports**) &gCaseConv, gListener);
}
static void CheckCaseConversion()
{
if(NULL == gCaseConv )
StartUpCaseConversion();
// NS_ASSERTION( gCaseConv != NULL , "cannot obtain UnicharUtil");
}
/***********************************************************************
IMPLEMENTATION NOTES:
Man I hate writing string classes.
You'd think after about a qintrillion lines of code have been written,
that no poor soul would ever have to do this again. Sigh.
***********************************************************************/
/**
* 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.
*/
nsString::nsString() {
NS_ASSERTION(kCommonEmptyBuffer[0]==0,kFoolMsg);
mLength = mCapacity = 0;
mStr = kCommonEmptyBuffer;
if(!mSelfTested) {
mSelfTested=PR_TRUE;
SelfTest();
}
}
/**
* This constructor accepts an isolatin string
* @update gess7/30/98
* @param aCString is a ptr to a 1-byte cstr
*/
nsString::nsString(const char* aCString) {
mLength=mCapacity=0;
mStr = kCommonEmptyBuffer;
if(aCString) {
PRInt32 len=strlen(aCString);
EnsureCapacityFor(len);
this->SetString(aCString,len);
}
}
/**
* This is our copy constructor
* @update gess7/30/98
* @param reference to another nsString
*/
nsString::nsString(const nsString &aString) {
mLength=mCapacity=0;
mStr = kCommonEmptyBuffer;
if(aString.mLength) {
EnsureCapacityFor(aString.mLength);
this->SetString(aString.mStr,aString.mLength);
}
}
/**
* Constructor from a unicode string
* @update gess7/30/98
* @param anicodestr pts to a unicode string
*/
nsString::nsString(const PRUnichar* aUnicodeStr){
mLength=mCapacity=0;
mStr = kCommonEmptyBuffer;
PRInt32 len=(aUnicodeStr) ? nsCRT::strlen(aUnicodeStr) : 0;
if(len>0) {
EnsureCapacityFor(len);
this->SetString(aUnicodeStr,len);
}
}
/**
* Destructor
* @update gess7/30/98
*/
nsString::~nsString()
{
if(mStr && (mStr!=kCommonEmptyBuffer))
delete [] mStr;
mStr=0;
mCapacity=mLength=0;
}
/**
* This method truncates this string to given length.
*
* @update gess 7/27/98
* @param anIndex -- new length of string
* @return nada
*/
void nsString::Truncate(PRInt32 anIndex) {
if((anIndex>-1) && (anIndex<mLength)) {
mLength=anIndex;
mStr[mLength]=0;
}
}
void nsString::SizeOf(nsISizeOfHandler* aHandler) const
{
aHandler->Add(sizeof(*this));
aHandler->Add(mCapacity * sizeof(chartype));
}
/**
* Determine whether or not the characters in this
* string are in sorted order.
*
* @update gess 8/25/98
* @return TRUE if ordered.
*/
PRBool nsString::IsOrdered(void) const {
PRBool result=PR_TRUE;
if(mLength>1) {
PRInt32 theIndex;
for(theIndex=1;theIndex<mLength;theIndex++) {
if(mStr[theIndex-1]>mStr[theIndex]) {
result=PR_FALSE;
break;
}
}
}
return result;
}
/**
* This method gets called when the internal buffer needs
* to grow to a given size.
* @update gess 3/30/98
* @param aNewLength -- new capacity of string
* @return void
*/
void nsString::EnsureCapacityFor(PRInt32 aNewLength)
{
PRInt32 newCapacity;
if (mCapacity > 64) {
// When the string starts getting large, double the capacity as we
// grow.
newCapacity = mCapacity * 2;
if (newCapacity < aNewLength) {
newCapacity = mCapacity + aNewLength;
}
} else {
// When the string is small, keep it's capacity a multiple of
// kGrowthDelta
PRInt32 size =aNewLength+kGrowthDelta;
newCapacity=size-(size % kGrowthDelta);
}
if(mCapacity<newCapacity) {
mCapacity=newCapacity;
chartype* temp = new chartype[newCapacity+1];
if (mLength > 0) {
nsCRT::memcpy(temp, mStr, mLength * sizeof(chartype) + sizeof(chartype));
}
if(mStr && (mStr!=kCommonEmptyBuffer))
delete [] mStr;
mStr = temp;
mStr[mLength]=0;
}
}
/**
* Call this method if you want string to report a shorter length.
* @update gess7/30/98
* @param aLength -- contains new length for mStr
* @return
*/
void nsString::SetLength(PRInt32 aLength) {
if(aLength>mLength) {
EnsureCapacityFor(aLength);
nsCRT::zero(mStr + mLength, (aLength - mLength) * sizeof(chartype));
}
if((aLength>0) && (aLength<mLength))
mStr[aLength]=0;
mLength=aLength;
}
/*********************************************************
ACCESSOR METHODS....
*********************************************************/
/**
* Retrieve pointer to internal string value
* @update gess 7/27/98
* @return PRUnichar* to internal string
*/
const PRUnichar* nsString::GetUnicode(void) const{
return mStr;
}
nsString::operator const PRUnichar*() const{
return mStr;
}
/**
* Retrieve unicode char at given index
* @update gess 7/27/98
* @param offset into string
* @return PRUnichar* to internal string
*/
PRUnichar nsString::operator()(int anIndex) const{
NS_ASSERTION(anIndex<mLength,kOutOfBoundsError);
if((anIndex<mLength) && (mStr))
return mStr[anIndex];
else return gBadChar;
}
/**
* Retrieve reference to unicode char at given index
* @update gess 7/27/98
* @param offset into string
* @return PRUnichar& from internal string
*/
PRUnichar& nsString::operator[](PRInt32 anIndex) const{
// NS_ASSERTION(anIndex<mLength,kOutOfBoundsError);
if((anIndex<mLength) && (mStr))
return mStr[anIndex];
else return gBadChar;
}
/**
* Retrieve reference to unicode char at given index
* @update gess 7/27/98
* @param offset into string
* @return PRUnichar& from internal string
*/
PRUnichar& nsString::CharAt(PRInt32 anIndex) const{
NS_ASSERTION(anIndex<mLength,kOutOfBoundsError);
if((anIndex<mLength) && (mStr))
return mStr[anIndex];
else return gBadChar;
}
/**
* Retrieve reference to first unicode char in string
* @update gess 7/27/98
* @return PRUnichar from internal string
*/
PRUnichar& nsString::First() const{
if((mLength) && (mStr))
return mStr[0];
else return gBadChar;
}
/**
* Retrieve reference to last unicode char in string
* @update gess 7/27/98
* @return PRUnichar from internal string
*/
PRUnichar& nsString::Last() const{
if((mLength) && (mStr))
return mStr[mLength-1];
else return gBadChar;
}
/**
* Create a new string by appending given string to this
* @update gess 7/27/98
* @param aString -- 2nd string to be appended
* @return new string
*/
nsString nsString::operator+(const nsString& aString){
nsString temp(*this);
temp.Append(aString.mStr,aString.mLength);
return temp;
}
/**
* create a new string by adding this to the given buffer.
* @update gess 7/27/98
* @param aCString is a ptr to cstring to be added to this
* @return newly created string
*/
nsString nsString::operator+(const char* aCString) {
nsString temp(*this);
temp.Append(aCString);
return temp;
}
/**
* create a new string by adding this to the given char.
* @update gess 7/27/98
* @param aChar is a char to be added to this
* @return newly created string
*/
nsString nsString::operator+(char aChar) {
nsString temp(*this);
temp.Append(chartype(aChar));
return temp;
}
/**
* create a new string by adding this to the given buffer.
* @update gess 7/27/98
* @param aStr unichar buffer to be added to this
* @return newly created string
*/
nsString nsString::operator+(const PRUnichar* aStr) {
nsString temp(*this);
temp.Append(aStr);
return temp;
}
/**
* create a new string by adding this to the given char.
* @update gess 7/27/98
* @param aChar is a unichar to be added to this
* @return newly created string
*/
nsString nsString::operator+(PRUnichar aChar) {
nsString temp(*this);
temp.Append(aChar);
return temp;
}
/**
* Converts all chars in internal string to lower
* @update gess 7/27/98
*/
void nsString::ToLowerCase()
{
// I18N code begin
CheckCaseConversion();
if(gCaseConv) {
nsresult err = gCaseConv->ToLower(mStr, mStr, mLength);
if( NS_SUCCEEDED(err))
return;
}
// I18N code end
// somehow UnicharUtil return failed, fallback to the old ascii only code
chartype* cp = mStr;
chartype* end = cp + mLength;
while (cp < end) {
chartype ch = *cp;
if ((ch >= 'A') && (ch <= 'Z')) {
*cp = 'a' + (ch - 'A');
}
cp++;
}
}
/**
* Converts all chars in internal string to upper
* @update gess 7/27/98
*/
void nsString::ToUpperCase()
{
// I18N code begin
CheckCaseConversion();
if(gCaseConv) {
nsresult err = gCaseConv->ToUpper(mStr, mStr, mLength);
if( NS_SUCCEEDED(err))
return;
}
// I18N code end
// somehow UnicharUtil return failed, fallback to the old ascii only code
chartype* cp = mStr;
chartype* end = cp + mLength;
while (cp < end) {
chartype ch = *cp;
if ((ch >= 'a') && (ch <= 'z')) {
*cp = 'A' + (ch - 'a');
}
cp++;
}
}
/**
* Converts all chars in given string to UCS2
*/
void nsString::ToUCS2(PRInt32 aStartOffset){
if(aStartOffset<mLength){
chartype* cp = &mStr[aStartOffset];
chartype* end = cp + mLength;
while (cp < end) {
unsigned char ch = (unsigned char)*cp;
if( 0x0080 == (0xFFE0 & (*cp)) ) // limit to only 0x0080 to 0x009F
*cp=gToUCS2[ch];
cp++;
}
}
}
/**
* Converts chars in this to lowercase, and
* stores them in aOut
* @update gess 7/27/98
* @param aOut is a string to contain result
*/
void nsString::ToLowerCase(nsString& aOut) const
{
aOut.EnsureCapacityFor(mLength);
aOut.mLength = mLength;
// I18N code begin
CheckCaseConversion();
if(gCaseConv) {
nsresult err = gCaseConv->ToLower(mStr, aOut.mStr, mLength);
(*(aOut.mStr+mLength)) = 0;
if( NS_SUCCEEDED(err))
return;
}
// I18N code end
// somehow UnicharUtil return failed, fallback to the old ascii only code
chartype* to = aOut.mStr;
chartype* from = mStr;
chartype* end = from + mLength;
while (from < end) {
chartype ch = *from++;
if ((ch >= 'A') && (ch <= 'Z')) {
ch = 'a' + (ch - 'A');
}
*to++ = ch;
}
*to = 0;
}
/**
* Converts chars in this to lowercase, and
* stores them in a given output string
* @update gess 7/27/98
* @param aOut is a string to contain result
*/
void nsString::ToUpperCase(nsString& aOut) const
{
aOut.EnsureCapacityFor(mLength);
aOut.mLength = mLength;
// I18N code begin
CheckCaseConversion();
if(gCaseConv) {
nsresult err = gCaseConv->ToUpper(mStr, aOut.mStr, mLength);
(*(aOut.mStr+mLength)) = 0;
if( NS_SUCCEEDED(err))
return;
}
// I18N code end
// somehow UnicharUtil return failed, fallback to the old ascii only code
chartype* to = aOut.mStr;
chartype* from = mStr;
chartype* end = from + mLength;
while (from < end) {
chartype ch = *from++;
if ((ch >= 'a') && (ch <= 'z')) {
ch = 'A' + (ch - 'a');
}
*to++ = ch;
}
*to = 0;
}
/**
* Creates a duplicate clone (ptr) of this string.
* @update gess 7/27/98
* @return ptr to clone of this string
*/
nsString* nsString::ToNewString() const {
return new nsString(mStr);
}
/**
* Creates an aCString clone of this string
* NOTE: Call delete[] when you're done with this copy. NOT free!
* @update gess 7/27/98
* @return ptr to new aCString string
*/
char* nsString::ToNewCString() const
{
char* rv = new char[mLength + 1];
return ToCString(rv,mLength+1);
}
/**
* Creates an unichar clone of this string
* @update gess 7/27/98
* @return ptr to new unichar string
*/
PRUnichar* nsString::ToNewUnicode() const
{
PRInt32 len = mLength;
chartype* rv = new chartype[len + 1];
chartype* to = rv;
chartype* from = mStr;
while (--len >= 0) {
*to++ = *from++;
}
*to++ = 0;
return rv;
}
/**
* Copies contents of this onto given string.
* @update gess 7/27/98
* @param aString to hold copy of this
* @return nada.
*/
void nsString::Copy(nsString& aString) const
{
aString.mLength = 0;
aString.Append(mStr, mLength);
}
/**
*
* @update gess 7/27/98
* @param
* @return
*/
char* nsString::ToCString(char* aBuf, PRInt32 aBufLength) const
{
aBufLength--; // leave room for the \0
PRInt32 len = (mLength > aBufLength) ? aBufLength : mLength;
char* to = aBuf;
chartype* from = mStr;
while (--len >= 0) {
*to++ = char(*from++);
}
*to++ = '\0';
return aBuf;
}
/**
* Perform string to float conversion.
* @update gess 7/27/98
* @param aErrorCode will contain error if one occurs
* @return float rep of string value
*/
float nsString::ToFloat(PRInt32* aErrorCode) const
{
char buf[40];
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.
* @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; aErrorCode gets set too: NS_OK, NS_ERROR_ILLEGAL_VALUE
*/
PRInt32 nsString::ToInteger(PRInt32* aErrorCode,PRInt32 aRadix) const {
PRInt32 result = 0;
PRInt32 decPt=Find(PRUnichar('.'),0);
PRUnichar* cp = (-1==decPt) ? mStr + mLength-1 : mStr+decPt-1;
char digit=0;
PRUnichar theChar;
PRInt32 theShift=0;
PRInt32 theMult=1;
*aErrorCode = (0<mLength) ? NS_OK : NS_ERROR_ILLEGAL_VALUE;
// Skip trailing non-numeric...
while (cp >= mStr) {
theChar = *cp;
if((theChar>='0') && (theChar<='9')){
break;
}
else if((theChar>='a') && (theChar<='f')) {
break;
}
else if((theChar>='A') && (theChar<='F')) {
break;
}
cp--;
}
//now iterate the numeric chars and build our result
while(cp>=mStr) {
theChar=*cp--;
if((theChar>='0') && (theChar<='9')){
digit=theChar-'0';
}
else if((theChar>='a') && (theChar<='f')) {
digit=(theChar-'a')+10;
}
else if((theChar>='A') && (theChar<='F')) {
digit=(theChar-'A')+10;
}
else if('-'==theChar) {
result=-result;
break;
}
else if(('+'==theChar) || (' '==theChar)) { //stop in a good state if you see this...
break;
}
else if((('x'==theChar) || ('X'==theChar)) && (16==aRadix)) {
//stop in a good state.
break;
}
else{
*aErrorCode=NS_ERROR_ILLEGAL_VALUE;
result=0;
break;
}
result+=digit*theMult;
theMult*=aRadix;
}
return result;
}
/**
* assign given PRUnichar* to this string
* @update gess 7/27/98
* @param PRUnichar: buffer to be assigned to this
* @return this
*/
nsString& nsString::SetString(const PRUnichar* aStr,PRInt32 aLength) {
if((0 == aLength) || (nsnull == aStr)) {
mLength=0;
if (nsnull != mStr) {
mStr[0]=0;
}
} else {
PRInt32 len=(aLength<0) ? nsCRT::strlen(aStr) : aLength;
if(mCapacity<=len)
EnsureCapacityFor(len);
nsCRT::memcpy(mStr,aStr,len*sizeof(chartype));
mLength=len;
mStr[mLength]=0;
}
return *this;
}
/**
* assign given char* to this string
* @update gess 7/27/98
* @param aCString: buffer to be assigned to this
* @return this
*/
nsString& nsString::SetString(const char* aCString,PRInt32 aLength) {
if(aCString!=0) {
PRInt32 len=(aLength<0) ? nsCRT::strlen(aCString) : aLength;
if(mCapacity<=len)
EnsureCapacityFor(len);
const unsigned char* from = (const unsigned char*) aCString;
const unsigned char* end = from + len;
PRUnichar* dst = mStr;
while (from < end) {
*dst++ = PRUnichar(*from++);
}
mLength=len;
mStr[mLength]=0;
}
else {
mLength=0; //This little bit of code handles the case
mStr[0]=0; //where some blockhead hands us a null string
}
return *this;
}
/**
* assign given char* to this string
* @update gess 7/27/98
* @param PRUnichar: buffer to be assigned to this
* @return this
*/
nsString& nsString::operator=(const PRUnichar* aStr) {
return this->SetString(aStr);
}
/**
* assign given string to this one
* @update gess 7/27/98
* @param aString: string to be added to this
* @return this
*/
nsString& nsString::operator=(const nsString& aString) {
return this->SetString(aString.mStr,aString.mLength);
}
/**
* assign given char* to this string
* @update gess 7/27/98
* @param aCString: buffer to be assigned to this
* @return this
*/
nsString& nsString::operator=(const char* aCString) {
return SetString(aCString);
}
/**
* assign given char to this string
* @update gess 7/27/98
* @param aChar: char to be assignd to this
* @return this
*/
nsString& nsString::operator=(char aChar) {
return this->operator=(PRUnichar(aChar));
}
/**
* assign given char to this string
* @update gess 7/27/98
* @param aChar: char to be assignd to this
* @return this
*/
nsString& nsString::operator=(PRUnichar aChar) {
if(mCapacity<1)
EnsureCapacityFor(kGrowthDelta);
mStr[0]=aChar;
mLength=1;
mStr[mLength]=0;
return *this;
}
/**
* append given string to this string
* @update gess 7/27/98
* @param aString : string to be appended to this
* @return this
*/
nsString& nsString::Append(const nsString& aString,PRInt32 aLength) {
return Append(aString.mStr,aString.mLength);
}
/**
* append given string to this string
* @update gess 7/27/98
* @param aString : string to be appended to this
* @return this
*/
nsString& nsString::Append(const char* aCString,PRInt32 aLength) {
if(aCString!=0) {
PRInt32 len=(aLength<0) ? strlen(aCString) : aLength;
if(mLength+len >= mCapacity) {
EnsureCapacityFor(mLength+len);
}
const unsigned char* from = (const unsigned char*) aCString;
const unsigned char* end = from + len;
PRUnichar* to = mStr + mLength;
while (from < end) {
*to++ = PRUnichar(*from++);
}
mLength+=len;
mStr[mLength]=0;
}
return *this;
}
/**
* append given string to this string
* @update gess 7/27/98
* @param aString : string to be appended to this
* @return this
*/
nsString& nsString::Append(char aChar) {
return Append(PRUnichar(aChar));
}
/**
* append given string to this string
* @update gess 7/27/98
* @param aString : string to be appended to this
* @return this
*/
nsString& nsString::Append(const PRUnichar* aString,PRInt32 aLength) {
if(aString!=0) {
PRInt32 len=(aLength<0) ? nsCRT::strlen(aString) : aLength;
if(mLength+len >= mCapacity) {
EnsureCapacityFor(mLength+len);
}
if(len>0)
nsCRT::memcpy(&mStr[mLength],aString,len*sizeof(chartype));
mLength+=len;
mStr[mLength]=0;
}
return *this;
}
/**
* append given string to this string
* @update gess 7/27/98
* @param aString : string to be appended to this
* @return this
*/
nsString& nsString::Append(PRUnichar aChar) {
if(mLength < mCapacity) {
mStr[mLength++]=aChar; // the new string len < capacity, so just copy
mStr[mLength]=0;
}
else { // The new string exceeds our capacity
EnsureCapacityFor(mLength+1);
mStr[mLength++]=aChar;
mStr[mLength]=0;
}
return *this;
}
/**
* append given string to this string
* @update gess 7/27/98
* @param aString : string to be appended to this
* @return this
*/
nsString& nsString::operator+=(const nsString &aString) {
return this->Append(aString.mStr,aString.mLength);
}
/**
* append given buffer to this string
* @update gess 7/27/98
* @param aCString: buffer to be appended to this
* @return this
*/
nsString& nsString::operator+=(const char* aCString) {
return Append(aCString);
}
/**
* append given buffer to this string
* @update gess 7/27/98
* @param aBuffer: buffer to be appended to this
* @return this
*/
nsString& nsString::operator+=(const PRUnichar* aBuffer) {
return Append(aBuffer);
}
/**
* append given char to this string
* @update gess 7/27/98
* @param aChar: char to be appended to this
* @return this
*/
nsString& nsString::operator+=(PRUnichar aChar) {
return Append(aChar);
}
/**
*
* @update gess 7/27/98
* @param
* @return
*/
nsString& nsString::Append(PRInt32 aInteger,PRInt32 aRadix) {
char* fmt = "%d";
if (8 == aRadix) {
fmt = "%o";
} else if (16 == aRadix) {
fmt = "%x";
}
char buf[40];
PR_snprintf(buf, sizeof(buf), fmt, aInteger);
Append(buf);
return *this;
}
/**
*
* @update gess 7/27/98
* @param
* @return
*/
nsString& nsString::Append(float aFloat){
char buf[40];
PR_snprintf(buf, sizeof(buf), "%g", aFloat);
Append(buf);
return *this;
}
/*
* 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
*/
PRInt32 nsString::Left(nsString& aCopy,PRInt32 aCount) const {
return Mid(aCopy,0,aCount);
}
/*
* Copies n characters from this string to given string,
* starting at the given offset.
*
*
* @update gess 4/1/98
* @param aCopy -- Receiving string
* @param aCount -- number of chars to copy
* @param anOffset -- position where copying begins
* @return number of chars copied
*/
PRInt32 nsString::Mid(nsString& aCopy,PRInt32 anOffset,PRInt32 aCount) const {
if(anOffset<mLength) {
aCount=(anOffset+aCount<=mLength) ? aCount : mLength-anOffset;
PRUnichar* from = mStr + anOffset;
PRUnichar* end = mStr + anOffset + aCount;
while (from < end) {
PRUnichar ch = *from;
aCopy.Append(ch);
from++;
}
}
else aCount=0;
return aCount;
}
/*
* 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
*/
PRInt32 nsString::Right(nsString& aCopy,PRInt32 aCount) const {
PRInt32 offset=(mLength-aCount<0) ? 0 : mLength-aCount;
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.
*/
PRInt32 nsString::Insert(const nsString& aCopy,PRInt32 anOffset,PRInt32 aCount) {
aCount=(aCount>aCopy.mLength) ? aCopy.mLength : aCount; //don't try to copy more than you are given
if (aCount < 0) aCount = aCopy.mLength;
if(0<=anOffset) {
if(aCount>0) {
//1st optimization: If you're inserting at end, then simply append!
if(anOffset>=mLength){
Append(aCopy,aCopy.mLength);
return aCopy.mLength;
}
if(mLength+aCount >= mCapacity) {
EnsureCapacityFor(mLength+aCount);
}
PRUnichar* last = mStr + mLength;
PRUnichar* first = mStr + anOffset-1;
PRUnichar* next = mStr + mLength + aCount;
//Copy rightmost chars, up to offset+aCount...
while(first<last) {
*next=*last;
next--;
last--;
}
//now insert new chars, starting at offset
next = last;
first = aCopy.mStr - 1;
last = aCopy.mStr + aCount;
while (++first<last) {
*(++next)=*first;
}
mLength+=aCount;
}
else aCount=0;
}
return aCount;
}
/**
* 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
*/
PRInt32 nsString::Insert(PRUnichar aChar,PRInt32 anOffset){
//1st optimization: If you're inserting at end, then simply append!
if(anOffset<mLength){
if(mLength+1>=mCapacity) {
EnsureCapacityFor(mLength+1);
}
PRUnichar* last = mStr + mLength;
PRUnichar* first = mStr + anOffset-1;
PRUnichar* next = mStr + mLength + 1;
//Copy rightmost chars, up to offset+aCount...
while(first<last) {
*next=*last;
next--;
last--;
}
//now insert new chars, starting at offset
mStr[anOffset]=aChar;
mLength+=1;
}
else Append(aChar);
return 1;
}
/*
* This method is used to cut characters in this string
* starting at anOffset, continuing for aCount chars.
*
* @update gess 3/26/98
* @param anOffset -- start pos for cut operation
* @param aCount -- number of chars to be cut
* @return *this
*/
nsString&
nsString::Cut(PRInt32 anOffset, PRInt32 aCount)
{
if (PRUint32(anOffset) < PRUint32(mLength)) {
PRInt32 spos=anOffset+aCount;
PRInt32 delcnt=(spos<mLength) ? aCount : mLength-anOffset;
if (spos < mLength) {
nsCRT::memmove(&mStr[anOffset], &mStr[spos],
sizeof(chartype) * (mLength - spos));
}
mLength -= delcnt;
mStr[mLength] = 0; // restore zero terminator
}
return *this;
}
/**
* This method is used to remove all occurances of the
* characters found in aSet from this string.
*
* @update gess 3/26/98
* @param aSet -- characters to be cut from this
* @return *this
*/
nsString& nsString::StripChars(const char* aSet){
PRUnichar* from = mStr;
PRUnichar* end = mStr + mLength;
PRUnichar* to = mStr;
while (from < end) {
PRUnichar ch = *from;
if(0==strchr(aSet,char(ch))) {
*to++=*from;
}
from++;
}
*to = '\0';
mLength = to - mStr;
return *this;
}
/**
* 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 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'));
}
/**
* 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
*/
nsString& nsString::Trim(const char* aTrimSet,
PRBool aEliminateLeading,
PRBool aEliminateTrailing)
{
PRUnichar* from = mStr;
PRUnichar* end = mStr + mLength-1;
PRUnichar* to = mStr;
//begin by find the first char not in aTrimSet
if(aEliminateLeading) {
while (from < end) {
PRUnichar ch = *from;
if(!strchr(aTrimSet,char(ch))) {
break;
}
from++;
}
}
//Now, find last char not in aTrimSet
if(aEliminateTrailing) {
while(end> from) {
PRUnichar ch = *end;
if(!strchr(aTrimSet,char(ch))) {
break;
}
end--;
}
}
//now rewrite your string without unwanted
//leading or trailing characters.
if (from != to) {
while (from <= end) {
*to++ = *from++;
}
}
else {
to = ++end;
}
*to = '\0';
mLength = to - mStr;
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
*/
nsString& nsString::CompressWhitespace( PRBool aEliminateLeading,
PRBool aEliminateTrailing)
{
Trim(" \r\n\t",aEliminateLeading,aEliminateTrailing);
PRUnichar* from = mStr;
PRUnichar* end = mStr + mLength;
PRUnichar* to = from;
//this code converts /n, /t, /r into normal space ' ';
//it also eliminates runs of whitespace...
while (from < end) {
PRUnichar ch = *from++;
if (IsSpace(ch)) {
*to++ = ' ';
while (from < end) {
ch = *from++;
if (!IsSpace(ch)) {
*to++ = ch;
break;
}
}
} else {
*to++ = ch;
}
}
*to = '\0';
mLength = to - mStr;
return *this;
}
/**
* This method strips whitespace throughout the string
*
* @update gess 7/27/98
* @return this
*/
nsString& nsString::StripWhitespace()
{
Trim(" \r\n\t");
return StripChars("\r\t\n");
}
/**
* This method is used to replace all occurances of the
* given source char with the given dest char
*
* @param
* @return *this
*/
nsString& nsString::ReplaceChar(PRUnichar aSourceChar, PRUnichar aDestChar) {
PRUnichar* from = mStr;
PRUnichar* end = mStr + mLength;
while (from < end) {
PRUnichar ch = *from;
if(ch==aSourceChar) {
*from = aDestChar;
}
from++;
}
return *this;
}
/**
* Search for given character within this string.
* This method does so by using a binary search,
* so your string HAD BETTER BE ORDERED!
*
* @update gess 3/25/98
* @param aChar is the unicode char to be found
* @return offset in string, or -1 (kNotFound)
*/
PRInt32 nsString::BinarySearch(PRUnichar aChar) const {
PRInt32 low=0;
PRInt32 high=mLength-1;
while (low <= high) {
int middle = (low + high) >> 1;
if (mStr[middle]==aChar)
return middle;
if (mStr[middle]>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 nsString::Find(const char* aCStringBuf) const{
NS_ASSERTION(0!=aCStringBuf,kNullPointerError);
PRInt32 result=kNotFound;
if(aCStringBuf) {
PRInt32 len=strlen(aCStringBuf);
if((0<len) && (len<=mLength)) { //only enter if abuffer length is <= mStr length.
PRInt32 max=mLength-len;
for(PRInt32 offset=0;offset<=max;offset++)
if(0==nsCRT::strncmp(&mStr[offset],aCStringBuf,len))
return offset; //in this case, 0 means they match
}
}
return result;
}
/**
* Search for given buffer within this string
*
* @update gess 3/25/98
* @param aString - PUnichar* to be found
* @return offset in string, or -1 (kNotFound)
*/
PRInt32 nsString::Find(const PRUnichar* aString) const{
NS_ASSERTION(0!=aString,kNullPointerError);
PRInt32 result=kNotFound;
if(aString) {
PRInt32 len=nsCRT::strlen(aString);
if((0<len) && (len<=mLength)) { //only enter if abuffer length is <= mStr length.
PRInt32 max=mLength-len;
for(PRInt32 offset=0;offset<=max;offset++)
if(0==nsCRT::strncmp(&mStr[offset],aString,len))
return offset; //in this case, 0 means they match
}
}
return result;
}
/**
* Search for given buffer within this string
*
* @update gess 3/25/98
* @param nsString -- buffer to be found
* @return offset in string, or -1 (kNotFound)
*/
PRInt32 nsString::Find(const nsString& aString) const{
PRInt32 result=kNotFound;
PRInt32 len=aString.mLength;
PRInt32 offset=0;
if((0<len) && (len<=mLength)) { //only enter if abuffer length is <= mStr length.
PRInt32 max=mLength-len;
for(offset=0;offset<=max;offset++) {
if(0==nsCRT::strncmp(&mStr[offset],aString.mStr,len)) {
return offset; //in this case, 0 means they match
}
}
}
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 nsString::Find(PRUnichar aChar, PRInt32 anOffset) const{
for(PRInt32 i=anOffset;i<mLength;i++)
if(aChar==mStr[i])
return i;
return kNotFound;
}
/**
*
*
* @update gess 3/25/98
* @param
* @return
*/
PRInt32 nsString::FindCharInSet(const char* anAsciiSet,PRInt32 anOffset) const{
NS_ASSERTION(0!=anAsciiSet,kNullPointerError);
if(anAsciiSet && (strlen(anAsciiSet))) {
for(PRInt32 i=anOffset;i<mLength;i++){
char* pos=strchr(anAsciiSet,char(mStr[i]));
if(pos)
return i;
}
}
return kNotFound;
}
/**
*
*
* @update gess 3/25/98
* @param
* @return
*/
PRInt32 nsString::FindCharInSet(nsString& aSet,PRInt32 anOffset) const{
if(aSet.Length()) {
for(PRInt32 i=anOffset;i<mLength;i++){
PRInt32 pos=aSet.Find(mStr[i]);
if(kNotFound!=pos)
return i;
}
}
return kNotFound;
}
/**
*
*
* @update gess 3/25/98
* @param
* @return
*/
PRInt32 nsString::RFindCharInSet(const char* anAsciiSet,PRInt32 anOffset) const{
NS_ASSERTION(0!=anAsciiSet,kNullPointerError);
if(anAsciiSet && strlen(anAsciiSet)) {
for(PRInt32 i=mLength-1;i>0;i--){
char* pos=strchr(anAsciiSet,char(mStr[i]));
if(pos)
return i;
}
}
return kNotFound;
}
/**
*
*
* @update gess 3/25/98
* @param
* @return
*/
PRInt32 nsString::RFindCharInSet(nsString& aSet,PRInt32 anOffset) const{
if(aSet.Length()) {
for(PRInt32 i=mLength-1;i>0;i--){
PRInt32 pos=aSet.Find(mStr[i]);
if(kNotFound!=pos)
return i;
}
}
return kNotFound;
}
/**
*
*
* @update gess 3/25/98
* @param
* @return
*/
PRInt32 nsString::RFind(const PRUnichar* aString,PRBool aIgnoreCase) const{
NS_ASSERTION(0!=aString,kNullPointerError);
if(aString) {
PRInt32 len=nsCRT::strlen(aString);
if((len) && (len<=mLength)) { //only enter if abuffer length is <= mStr length.
for(PRInt32 offset=mLength-len;offset>=0;offset--) {
PRInt32 result=0;
if(aIgnoreCase)
result=nsCRT::strncasecmp(&mStr[offset],aString,len);
else result=nsCRT::strncmp(&mStr[offset],aString,len);
if(0==result)
return offset; //in this case, 0 means they match
}
}
}
return kNotFound;
}
/**
*
*
* @update gess 3/25/98
* @param
* @return
*/
PRInt32 nsString::RFind(const nsString& aString,PRBool aIgnoreCase) const{
PRInt32 len=aString.mLength;
if((len) && (len<=mLength)) { //only enter if abuffer length is <= mStr length.
for(PRInt32 offset=mLength-len;offset>=0;offset--) {
PRInt32 result=0;
if(aIgnoreCase)
result=nsCRT::strncasecmp(&mStr[offset],aString.mStr,len);
else result=nsCRT::strncmp(&mStr[offset],aString.mStr,len);
if(0==result)
return offset; //in this case, 0 means they match
}
}
return kNotFound;
}
/**
*
*
* @update gess 3/25/98
* @param
* @return
*/
PRInt32 nsString::RFind(const char* anAsciiSet,PRBool aIgnoreCase) const{
NS_ASSERTION(0!=anAsciiSet,kNullPointerError);
if(anAsciiSet) {
PRInt32 len=strlen(anAsciiSet);
if((len) && (len<=mLength)) { //only enter if abuffer length is <= mStr length.
for(PRInt32 offset=mLength-len;offset>=0;offset--) {
PRInt32 result=0;
if(aIgnoreCase)
result=nsCRT::strncasecmp(&mStr[offset],anAsciiSet,len);
else result=nsCRT::strncmp(&mStr[offset],anAsciiSet,len);
if(0==result)
return offset; //in this case, 0 means they match
}
}
}
return kNotFound;
}
/**
* Scans this string backwards for first occurance of
* the given char.
*
* @update gess 3/25/98
* @param
* @return offset of char in string, or -1 (kNotFound)
*/
PRInt32 nsString::RFind(PRUnichar aChar,PRBool aIgnoreCase) const{
chartype uc=nsCRT::ToUpper(aChar);
for(PRInt32 offset=mLength-1;offset>=0;offset--)
if(aIgnoreCase) {
if(nsCRT::ToUpper(mStr[offset])==uc)
return offset;
}
else if(mStr[offset]==aChar)
return offset; //in this case, 0 means they match
return kNotFound;
}
/**************************************************************
COMPARISON METHODS...
**************************************************************/
/**
* Compares given cstring to this string.
* @update gess 7/27/98
* @param aCString pts to a cstring
* @param aIgnoreCase tells us how to treat case
* @return -1,0,1
*/
PRInt32 nsString::Compare(const char *aCString,PRBool aIgnoreCase,PRInt32 aLength) const {
NS_ASSERTION(0!=aCString,kNullPointerError);
if(-1!=aLength) {
//if you're given a length, use it to determine the max # of bytes to compare.
//In some cases, this can speed up the string comparison.
int maxlen=(aLength<mLength) ? aLength : mLength;
if (maxlen == 0) {
if ((mLength == 0) && (aLength == 0))
return 0;
if (mLength == 0)
return -1;
return 1;
}
if (aIgnoreCase) {
return nsCRT::strncasecmp(mStr,aCString,maxlen);
}
return nsCRT::strncmp(mStr,aCString,maxlen);
}
if (aIgnoreCase) {
return nsCRT::strcasecmp(mStr,aCString);
}
return nsCRT::strcmp(mStr,aCString);
}
/**
* LAST MODS: gess
*
* @param
* @return
*/
PRInt32 nsString::Compare(const nsString &S,PRBool aIgnoreCase) const {
int maxlen=(S.mLength<mLength) ? S.mLength : mLength;
if (maxlen == 0) {
if ((mLength == 0) && (S.mLength == 0))
return 0;
if (mLength == 0)
return -1;
return 1;
}
if (aIgnoreCase) {
return nsCRT::strcasecmp(mStr,S.mStr);
}
return nsCRT::strcmp(mStr,S.mStr);
}
/**
*
* @update gess 7/27/98
* @param
* @return
*/
PRInt32 nsString::Compare(const PRUnichar* aString,PRBool aIgnoreCase,PRInt32 aLength) const {
NS_ASSERTION(0!=aString,kNullPointerError);
if(-1!=aLength) {
//if you're given a length, use it to determine the max # of bytes to compare.
//In some cases, this can speed up the string comparison.
int maxlen=(aLength<mLength) ? aLength : mLength;
if (maxlen == 0) {
if ((mLength == 0) && (aLength == 0))
return 0;
if (mLength == 0)
return -1;
return 1;
}
if (aIgnoreCase) {
return nsCRT::strncasecmp(mStr,aString,maxlen);
}
return nsCRT::strncmp(mStr,aString,maxlen);
}
if (aIgnoreCase) {
return nsCRT::strcasecmp(mStr,aString);
}
return nsCRT::strcmp(mStr,aString);
}
PRBool nsString::operator==(const nsString &S) const {return Equals(S);}
PRBool nsString::operator==(const char *s) const {return Equals(s);}
PRBool nsString::operator==(const PRUnichar *s) const {return Equals(s);}
PRBool nsString::operator==(PRUnichar *s) const {return Equals(s);}
PRBool nsString::operator!=(const nsString &S) const {return PRBool(Compare(S)!=0);}
PRBool nsString::operator!=(const char *s) const {return PRBool(Compare(s)!=0);}
PRBool nsString::operator!=(const PRUnichar *s) const {return PRBool(Compare(s)!=0);}
PRBool nsString::operator<(const nsString &S) const {return PRBool(Compare(S)<0);}
PRBool nsString::operator<(const char *s) const {return PRBool(Compare(s)<0);}
PRBool nsString::operator<(const PRUnichar *s) const {return PRBool(Compare(s)<0);}
PRBool nsString::operator>(const nsString &S) const {return PRBool(Compare(S)>0);}
PRBool nsString::operator>(const char *s) const {return PRBool(Compare(s)>0);}
PRBool nsString::operator>(const PRUnichar *s) const {return PRBool(Compare(s)>0);}
PRBool nsString::operator<=(const nsString &S) const {return PRBool(Compare(S)<=0);}
PRBool nsString::operator<=(const char *s) const {return PRBool(Compare(s)<=0);}
PRBool nsString::operator<=(const PRUnichar *s) const {return PRBool(Compare(s)<=0);}
PRBool nsString::operator>=(const nsString &S) const {return PRBool(Compare(S)>=0);}
PRBool nsString::operator>=(const char *s) const {return PRBool(Compare(s)>=0);}
PRBool nsString::operator>=(const PRUnichar *s) const {return PRBool(Compare(s)>=0);}
/**
* Compare this to given string; note that we compare full strings here.
*
* @update gess 7/27/98
* @param aString is the other nsString to be compared to
* @return TRUE if equal
*/
PRBool nsString::Equals(const nsString& aString) const {
if(aString.mLength==mLength) {
PRInt32 result=nsCRT::strcmp(mStr,aString.mStr);
return PRBool(0==result);
}
return PR_FALSE;
}
/**
* Compare this to given string; 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 7/27/98
* @param aCString -- Cstr to compare to this
* @param aLength -- length of given string.
* @return TRUE if equal
*/
PRBool nsString::Equals(const char* aCString,PRInt32 aLength) const{
NS_ASSERTION(0!=aCString,kNullPointerError);
if((aLength>0) && (aLength!=mLength))
return PR_FALSE;
PRInt32 result=nsCRT::strcmp(mStr,aCString);
return PRBool(0==result);
}
/**
* Compare this to given atom
* @update gess 7/27/98
* @param aAtom -- atom to compare to this
* @return TRUE if equal
*/
PRBool nsString::Equals(const nsIAtom* aAtom) const
{
NS_ASSERTION(0!=aAtom,kNullPointerError);
PRInt32 result=nsCRT::strcmp(mStr,aAtom->GetUnicode());
return PRBool(0==result);
}
/**
* Compare given strings
* @update gess 7/27/98
* @param s1 -- first string to be compared
* @param s2 -- second string to be compared
* @return TRUE if equal
*/
PRBool nsString::Equals(const PRUnichar* s1, const PRUnichar* s2) const {
NS_ASSERTION(0!=s1,kNullPointerError);
NS_ASSERTION(0!=s2,kNullPointerError);
PRBool result=PR_FALSE;
if((s1) && (s2)){
PRInt32 cmp=nsCRT::strcmp(s1,s2);
result=PRBool(0==cmp);
}
return result;
}
/**
* Compares all chars in both strings w/o regard to case
* @update gess 7/27/98
* @param
* @return
*/
PRBool nsString::EqualsIgnoreCase(const nsString& aString) const{
if(aString.mLength==mLength) {
PRInt32 result=nsCRT::strcasecmp(mStr,aString.mStr);
return PRBool(0==result);
}
return PR_FALSE;
}
/**
*
* @update gess 7/27/98
* @param
* @return
*/
PRBool nsString::EqualsIgnoreCase(const nsIAtom *aAtom) const{
NS_ASSERTION(0!=aAtom,kNullPointerError);
PRBool result=PR_FALSE;
if(aAtom){
PRInt32 cmp=nsCRT::strcasecmp(mStr,aAtom->GetUnicode());
result=PRBool(0==cmp);
}
return result;
}
/**
* Compares given unicode string to this w/o regard to case
* @update gess 7/27/98
* @param s1 is the unicode string to be compared with this
* @param aLength is the length of s1, not # of bytes to compare
* @return true if full length of both strings are equal (modulo case)
*/
PRBool nsString::EqualsIgnoreCase(const PRUnichar* s1, const PRUnichar* s2) const {
NS_ASSERTION(0!=s1,kNullPointerError);
NS_ASSERTION(0!=s2,kNullPointerError);
PRBool result=PR_FALSE;
if((s1) && (s2)){
PRInt32 cmp=nsCRT::strcasecmp(s1,s2);
result=PRBool(0==cmp);
}
return result;
}
/**
* Compare this to given string w/o regard to case; 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 7/27/98
* @param aCString -- Cstr to compare to this
* @param aLength -- length of given string.
* @return TRUE if equal
*/
PRBool nsString::EqualsIgnoreCase(const char* aCString,PRInt32 aLength) const {
NS_ASSERTION(0!=aCString,kNullPointerError);
if((aLength>0) && (aLength!=mLength))
return PR_FALSE;
PRInt32 cmp=nsCRT::strcasecmp(mStr,aCString);
return PRBool(0==cmp);
}
/**
*
* @update gess 7/27/98
* @param
* @return
*/
void nsString::DebugDump(ostream& aStream) const {
for(int i=0;i<mLength;i++) {
aStream <<char(mStr[i]);
}
aStream << endl;
}
/**
*
* @update gess8/8/98
* @param
* @return
*/
ostream& operator<<(ostream& os,nsString& aString){
const PRUnichar* uc=aString.GetUnicode();
int len=aString.Length();
for(int i=0;i<len;i++)
os<<(char)uc[i];
return os;
}
//----------------------------------------------------------------------
#define INIT_AUTO_STRING() \
mLength = 0; \
mCapacity = (sizeof(mBuf) / sizeof(chartype))-sizeof(chartype); \
mStr = mBuf
/**
*
* @update gess 7/27/98
* @param
* @return
*/
nsAutoString::nsAutoString()
: nsString()
{
INIT_AUTO_STRING();
mStr[0] = 0;
}
/**
*
* @update gess 7/27/98
* @param
* @return
*/
nsAutoString::nsAutoString(const char* aCString)
: nsString()
{
INIT_AUTO_STRING();
SetString(aCString);
}
/**
*
* @update gess 7/27/98
* @param
* @return
*/
nsAutoString::nsAutoString(const nsString& other)
: nsString()
{
INIT_AUTO_STRING();
SetString(other.GetUnicode(),other.Length());
}
/**
*
* @update gess 7/27/98
* @param
* @return
*/
nsAutoString::nsAutoString(PRUnichar aChar)
: nsString()
{
INIT_AUTO_STRING();
Append(aChar);
}
/**
*
* @update gess 7/27/98
* @param
* @return
*/
nsAutoString::nsAutoString(const nsAutoString& other)
: nsString()
{
INIT_AUTO_STRING();
SetString(other.GetUnicode(),other.mLength);
}
/**
*
* @update gess 7/27/98
* @param
* @return
*/
nsAutoString::nsAutoString(const PRUnichar* unicode, PRInt32 uslen)
: nsString()
{
INIT_AUTO_STRING();
Append(unicode, uslen ? uslen : nsCRT::strlen(unicode));
}
/**
*
* @update gess 7/27/98
* @param
* @return
*/
nsAutoString::~nsAutoString()
{
if (mStr == mBuf) {
// Force to null so that baseclass dtor doesn't do damage
mStr = nsnull;
}
}
/**
* nsAutoString's buffer growing routine uses a different algorithm
* than nsString because the lifetime of the auto string is assumed
* to be shorter. Therefore, we double the size of the buffer each
* time we grow so that (hopefully) we quickly get to the right
* size.
*/
void nsAutoString::EnsureCapacityFor(PRInt32 aNewLength) {
if (aNewLength > mCapacity) {
PRInt32 size = mCapacity * 2;
if (size < aNewLength) {
size = mCapacity + aNewLength;
}
mCapacity=size;
chartype* temp = new chartype[mCapacity+1];
if (mLength > 0) {
nsCRT::memcpy(temp, mStr, mLength * sizeof(chartype) + sizeof(chartype));
}
if ((mStr != mBuf) && (0 != mStr)) {
delete [] mStr;
}
mStr = temp;
}
}
void
nsAutoString::SizeOf(nsISizeOfHandler* aHandler) const
{
aHandler->Add(sizeof(*this));
if (mStr != mBuf) {
aHandler->Add(mCapacity * sizeof(chartype));
}
}
/**
*
*
* @update gess 3/31/98
* @param
* @return
*/
void nsAutoString::SelfTest(){
nsAutoString xas("Hello there");
xas.Append("this string exceeds the max size");
xas.DebugDump(cout);
}
/**
*
* @update gess8/8/98
* @param
* @return
*/
ostream& operator<<(ostream& os,nsAutoString& aString){
const PRUnichar* uc=aString.GetUnicode();
int len=aString.Length();
for(int i=0;i<len;i++)
os<<(char)uc[i];
return os;
}
/**
*
* @update gess 7/27/98
* @param
* @return
*/
NS_BASE int fputs(const nsString& aString, FILE* out)
{
char buf[100];
char* cp = buf;
PRInt32 len = aString.Length();
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) {
delete [] cp;
}
return (int) len;
}
/**
*
* @update gess 7/27/98
* @param
* @return
*/
void nsString::SelfTest(void) {
nsAutoString a("foobar");
nsAutoString b("foo");
nsAutoString c(".5111");
nsAutoString d(" 5");
PRInt32 result=a.Compare(b);
PRInt32 result2=result;
result=c.ToInteger(&result2);
result=d.ToInteger(&result2);
result2=result;
#if 0
static const char* kConstructorError = kConstructorError;
static const char* kComparisonError = "Comparision error!";
static const char* kEqualsError = "Equals error!";
mSelfTested=PR_TRUE;
nsAutoString as("Hello there");
as.SelfTest();
static const char* temp="hello";
//first, let's test the constructors...
nsString empty;
empty="";
empty="xxx";
empty="";
nsString a(temp);
nsString* a_=new nsString(a); //test copy constructor
nsString b("world!");
//verify destructor...
delete a_;
a_=0;
//Let's verify the Length() method...
NS_ASSERTION(5==a.Length(),"Error: constructor probably bad!");
//**********************************************
//Let's check out the ACCESSORS...
//**********************************************
const chartype* p1=a.GetUnicode();
const chartype* p2=a; //should invoke the PRUnichar conversion operator...
for(int i=0;i<a.Length();i++) {
NS_ASSERTION(a[i]==temp[i],kConstructorError); //test [] operator
NS_ASSERTION(a.CharAt(i)==temp[i],kConstructorError); //test charAt method
NS_ASSERTION(a(i)==temp[i],kConstructorError); //test (i) operator
}
NS_ASSERTION(a.First()==temp[0],kConstructorError);
NS_ASSERTION(a.Last()==temp[a.Length()-1],kConstructorError);
//**********************************************
//Now let's test the CREATION operators...
//**********************************************
static const char* temp1="helloworld!";
nsString temp2=a+b;
nsString temp3=a+"world!";
nsString temp4=temp2+'!';
//let's quick check the PRUnichar operator+ method...
const PRUnichar* uc=temp4.GetUnicode();
nsString temp4a("Begin");
temp4a.DebugDump(cout);
nsString temp4b=temp4a+uc;
temp4b.DebugDump(cout);
temp2.DebugDump(cout);
temp3.DebugDump(cout);
temp4.DebugDump(cout);
for(i=0;i<temp2.Length();i++) {
NS_ASSERTION(temp1[i]==temp2[i],kConstructorError);
NS_ASSERTION(temp1[i]==temp3[i],kConstructorError);
NS_ASSERTION(temp1[i]==temp4[i],kConstructorError);
}
NS_ASSERTION(temp4.Last()=='!',kConstructorError);
NS_ASSERTION(temp4.Length()>temp3.Length(),kConstructorError); //should be char longer
nsString* es1=temp2.ToNewString(); //this should make us a new string
char* es2=temp2.ToNewCString();
for(i=0;i<temp2.Length();i++) {
NS_ASSERTION(es2[i]==(*es1)[i],"Creation error!");
}
nsString temp5("123.123");
PRInt32 error=0;
float f=temp5.ToFloat(&error);
nsString temp6("1234");
error=0;
PRInt32 theInt=temp6.ToInteger(&error);
//**********************************************
//Now let's test a few string COMPARISION ops...
//**********************************************
nsString sourceString("Hello how are you");
nsString subString("you");
nsString replacementStr("xxx");
PRInt32 offset = sourceString.Find(subString);
sourceString.Cut(offset, subString.Length());
sourceString.Insert(replacementStr, offset, replacementStr.Length()); // Offset isn't checked in Insert either
//**********************************************
//Now let's test a few string COMPARISION ops...
//**********************************************
nsString temp8("aaaa");
nsString temp8a("AAAA");
nsString temp9("bbbb");
const char* aaaa="aaaa";
const char* bbbb="bbbb";
//First test the string compare routines...
NS_ASSERTION(0>temp8.Compare(temp9),kComparisonError);
NS_ASSERTION(0<temp9.Compare(temp8),kComparisonError);
NS_ASSERTION(0==temp8.Compare(temp8a,PR_TRUE),kComparisonError);
NS_ASSERTION(0==temp8.Compare(aaaa),kComparisonError);
//Now test the boolean operators...
NS_ASSERTION(temp8==temp8,kComparisonError);
NS_ASSERTION(temp8==aaaa,kComparisonError);
NS_ASSERTION(temp8!=temp9,kComparisonError);
NS_ASSERTION(temp8!=bbbb,kComparisonError);
NS_ASSERTION(temp8<temp9,kComparisonError);
NS_ASSERTION(temp8<bbbb,kComparisonError);
NS_ASSERTION(temp9>temp8,kComparisonError);
NS_ASSERTION(temp9>aaaa,kComparisonError);
NS_ASSERTION(temp8<=temp8,kComparisonError);
NS_ASSERTION(temp8<=temp9,kComparisonError);
NS_ASSERTION(temp8<=bbbb,kComparisonError);
NS_ASSERTION(temp9>=temp9,kComparisonError);
NS_ASSERTION(temp9>=temp8,kComparisonError);
NS_ASSERTION(temp9>=aaaa,kComparisonError);
NS_ASSERTION(temp8.Equals(temp8),kEqualsError);
NS_ASSERTION(temp8.Equals(aaaa),kEqualsError);
nsString temp10(temp8);
temp10.ToUpperCase();
NS_ASSERTION(temp8.EqualsIgnoreCase(temp10),kEqualsError);
NS_ASSERTION(temp8.EqualsIgnoreCase("AAAA"),kEqualsError);
//**********************************************
//Now let's test a few string MANIPULATORS...
//**********************************************
nsAutoString ab("ab");
nsString abcde("cde");
abcde.Insert(ab,0,2);
nsAutoString xxx("xxx");
abcde.Insert(xxx,2,3);
temp2.ToUpperCase();
for(i=0;i<temp2.Length();i++) {
NS_ASSERTION(nsCRT::ToUpper(temp1[i])==temp2[i],"ToUpper error!");
}
temp2.ToLowerCase();
for(i=0;i<temp2.Length();i++) {
NS_ASSERTION(temp1[i]==temp2[i],"ToLower error!");
}
nsString temp7(temp2);
temp2.ToUpperCase(temp7);
for(i=0;i<temp2.Length();i++) {
NS_ASSERTION(nsCRT::ToUpper(temp1[i])==temp7[i],"ToLower error!");
}
nsString cut("abcdef");
cut.Cut(7,10); //this is out of bounds, so ignore...
cut.DebugDump(cout);
cut.Cut(5,2); //cut last chars
cut.DebugDump(cout);
cut.Cut(1,1); //cut first char
cut.DebugDump(cout);
cut.Cut(2,1); //cut one from the middle
cut.DebugDump(cout);
cut="Hello there Rick";
cut.StripChars("Re"); //remove the R and e characters...
cut.DebugDump(cout);
cut="'\"abcdef\"'";
cut.Trim("'");
cut.DebugDump(cout);
cut.Trim("\"",PR_TRUE,PR_FALSE);
cut.DebugDump(cout);
cut.Trim("\"",PR_FALSE,PR_TRUE);
cut.DebugDump(cout);
cut="abc def\n\n ghi";
cut.StripWhitespace();
cut.DebugDump(cout);
cut="abc def\n\n ghi";
cut.CompressWhitespace();
cut.DebugDump(cout);
//**********************************************
//Now let's test the ASSIGNMENT operators...
//**********************************************
nsString temp12;
nsString temp13;
nsString temp14;
temp12 = a; //test assignment from another string ("hello")
temp13= "Hello world!"; //test assignment from char*
temp14 = '?'; //test assignment from char
const PRUnichar* uni=temp4.GetUnicode();
nsString temp14a;
temp14a=uni; //test PRUnichar assignment operator...
temp14a.DebugDump(cout);
//**********************************************
//Now let's test the APPENDING operators...
//**********************************************
temp14a+=uni; //test PRUnichar append operator (+=)
temp14a.DebugDump(cout);
temp12+=temp2; //append another string
temp12.DebugDump(cout);
temp13+="What!"; //append a char*
temp13.DebugDump(cout);
temp14+='?'; //append a char
temp14.DebugDump(cout);
temp14.Append(1000,10); //append an int
temp14.DebugDump(cout);
float f1=123.55f;
temp14.Append(f1); //append a float
temp14.DebugDump(cout);
//**********************************************
//Now let's test the SEARCHING operations...
//**********************************************
nsString temp15("abcdefghijklmnopqrstuvwxyzabc");
PRInt32 pos=temp15.Find("efg");
NS_ASSERTION(pos==4,"Error: Find routine");
pos=temp15.Find(PRUnichar('r'));
NS_ASSERTION(pos==17,"Error: Find char routine");
pos=temp15.FindCharInSet("12k");
NS_ASSERTION(pos==10,"Error: FindFirstInChar routine");
pos=temp15.RFindCharInSet("12k");
NS_ASSERTION(pos==10,"Error: FindLastInChar routine");
pos=temp15.RFind("abc");
NS_ASSERTION(pos==26,"Error: RFind routine");
pos=temp15.RFind("xxx");
NS_ASSERTION(pos==-1,"Error: RFind routine"); //this should fail
pos=temp15.RFind("");
NS_ASSERTION(pos==-1,"Error: RFind routine"); //this too should fail.
pos=temp15.RFind(PRUnichar('a'));
NS_ASSERTION(pos==26,"Error: RFind routine");
#endif
}
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