pjs/string/obsolete/nsString.h

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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/
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*
* 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.
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*
* The Original Code is mozilla.org code.
*
* The Initial Developer of the Original Code is Netscape
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* Communications Corporation. Portions created by Netscape are
* Copyright (C) 1998 Netscape Communications Corporation. All
* Rights Reserved.
*
* Contributor(s):
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*/
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/***********************************************************************
MODULE NOTES:
See nsStr.h for a more general description of string classes.
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This version of the nsString class offers many improvements over the
original version:
1. Wide and narrow chars
2. Allocators
3. Much smarter autostrings
4. Subsumable strings
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***********************************************************************/
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#ifndef _nsCString_
#define _nsCString_
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#include "nsString2.h"
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#include "prtypes.h"
#include "nscore.h"
#include <stdio.h>
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#include "nsStr.h"
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#include "nsIAtom.h"
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class NS_COM nsSubsumeCStr;
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class NS_COM nsCString : public nsStr {
public:
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/**
* Default constructor.
*/
nsCString();
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/**
* This constructor accepts an isolatin string
* @param aCString is a ptr to a 1-byte cstr
*/
nsCString(const char* aCString,PRInt32 aLength=-1);
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/**
* This constructor accepts a unichar string
* @param aCString is a ptr to a 2-byte cstr
*/
nsCString(const PRUnichar* aString,PRInt32 aLength=-1);
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/**
* This is a copy constructor that accepts an nsStr
* @param reference to another nsCString
*/
nsCString(const nsStr&);
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/**
* This is our copy constructor
* @param reference to another nsCString
*/
nsCString(const nsCString& aString);
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/**
* This constructor takes a subsumestr
* @param reference to subsumestr
*/
nsCString(nsSubsumeCStr& aSubsumeStr);
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/**
* Destructor
*
*/
virtual ~nsCString();
/**
* Retrieve the length of this string
* @return string length
*/
inline PRInt32 Length() const { return (PRInt32)mLength; }
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/**
* Retrieve the size of this string
* @return string length
*/
virtual void SizeOf(nsISizeOfHandler* aHandler, PRUint32* aResult) const;
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/**
* Call this method if you want to force a different string capacity
* @update gess7/30/98
* @param aLength -- contains new length for mStr
* @return
*/
void SetLength(PRUint32 aLength) {
Truncate(aLength);
}
/**
* Sets the new length of the string.
* @param aLength is new string length.
* @return nada
*/
void SetCapacity(PRUint32 aLength);
/**
* This method truncates this string to given length.
*
* @param anIndex -- new length of string
* @return nada
*/
void Truncate(PRInt32 anIndex=0);
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/**
* Determine whether or not the characters in this
* string are in sorted order.
*
* @return TRUE if ordered.
*/
PRBool IsOrdered(void) const;
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/**
* Determine whether or not this string has a length of 0
*
* @return TRUE if empty.
*/
PRBool IsEmpty(void) const {
return PRBool(0==mLength);
}
/**********************************************************************
Accessor methods...
*********************************************************************/
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/**
* Retrieve const ptr to internal buffer; DO NOT TRY TO FREE IT!
*/
const char* GetBuffer(void) const;
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/**
* Get nth character.
*/
PRUnichar operator[](PRUint32 anIndex) const;
PRUnichar CharAt(PRUint32 anIndex) const;
PRUnichar First(void) const;
PRUnichar Last(void) const;
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PRBool SetCharAt(PRUnichar aChar,PRUint32 anIndex);
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/**********************************************************************
String creation methods...
*********************************************************************/
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/**
* Create a new string by appending given string to this
* @param aString -- 2nd string to be appended
* @return new string
*/
nsSubsumeCStr operator+(const nsCString& aString);
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/**
* create a new string by adding this to the given char*.
* @param aCString is a ptr to cstring to be added to this
* @return newly created string
*/
nsSubsumeCStr operator+(const char* aCString);
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/**
* create a new string by adding this to the given char.
* @param aChar is a char to be added to this
* @return newly created string
*/
nsSubsumeCStr operator+(PRUnichar aChar);
nsSubsumeCStr operator+(char aChar);
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/**********************************************************************
Lexomorphic transforms...
*********************************************************************/
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/**
* Converts chars in this to lowercase
* @update gess 7/27/98
*/
void ToLowerCase();
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/**
* 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 ToLowerCase(nsCString& aString) const;
/**
* Converts chars in this to uppercase
* @update gess 7/27/98
*/
void ToUpperCase();
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/**
* 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 ToUpperCase(nsCString& aString) const;
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/**
* This method is used to remove all occurances of the
* characters found in aSet from this string.
*
* @param aSet -- characters to be cut from this
* @return *this
*/
nsCString& StripChars(const char* aSet);
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nsCString& StripChar(PRUnichar aChar,PRInt32 anOffset=0);
nsCString& StripChar(char aChar,PRInt32 anOffset=0) { return StripChar((PRUnichar) (unsigned char)aChar,anOffset); }
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/**
* This method strips whitespace throughout the string
*
* @return this
*/
nsCString& StripWhitespace();
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/**
* swaps occurence of 1 string for another
*
* @return this
*/
nsCString& ReplaceChar(PRUnichar aOldChar,PRUnichar aNewChar);
nsCString& ReplaceChar(const char* aSet,PRUnichar aNewChar);
nsCString& ReplaceSubstring(const nsCString& aTarget,const nsCString& aNewValue);
nsCString& ReplaceSubstring(const char* aTarget,const char* aNewValue);
PRInt32 CountChar(PRUnichar aChar);
/**
* This method trims characters found in aTrimSet from
* either end of the underlying string.
*
* @param aTrimSet -- contains chars to be trimmed from
* both ends
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* @param aEliminateLeading
* @param aEliminateTrailing
* @param aIgnoreQuotes
* @return this
*/
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nsCString& Trim(const char* aSet,PRBool aEliminateLeading=PR_TRUE,PRBool aEliminateTrailing=PR_TRUE,PRBool aIgnoreQuotes=PR_FALSE);
/**
* This method strips whitespace from string.
* You can control whether whitespace is yanked from
* start and end of string as well.
*
* @param aEliminateLeading controls stripping of leading ws
* @param aEliminateTrailing controls stripping of trailing ws
* @return this
*/
nsCString& CompressSet(const char* aSet, PRUnichar aChar,PRBool aEliminateLeading=PR_TRUE,PRBool aEliminateTrailing=PR_TRUE);
/**
* This method strips whitespace from string.
* You can control whether whitespace is yanked from
* start and end of string as well.
*
* @param aEliminateLeading controls stripping of leading ws
* @param aEliminateTrailing controls stripping of trailing ws
* @return this
*/
nsCString& CompressWhitespace( PRBool aEliminateLeading=PR_TRUE,PRBool aEliminateTrailing=PR_TRUE);
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/**********************************************************************
string conversion methods...
*********************************************************************/
operator char*() {return mStr;}
operator const char*() const {return (const char*)mStr;}
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/**
* This method constructs a new nsCString that is a clone
* of this string.
*
*/
nsCString* ToNewString() const;
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/**
* Creates an ISOLatin1 clone of this string
* Note that calls to this method should be matched with calls to Recycle().
* @return ptr to new isolatin1 string
*/
char* ToNewCString() const;
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/**
* Creates a unicode clone of this string
* Note that calls to this method should be matched with calls to Recycle().
* @return ptr to new unicode string
*/
PRUnichar* ToNewUnicode() const;
/**
* Copies data from internal buffer onto given char* buffer
* NOTE: This only copies as many chars as will fit in given buffer (clips)
* @param aBuf is the buffer where data is stored
* @param aBuflength is the max # of chars to move to buffer
* @return ptr to given buffer
*/
char* ToCString(char* aBuf,PRUint32 aBufLength,PRUint32 anOffset=0) const;
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/**
* Perform string to float conversion.
* @param aErrorCode will contain error if one occurs
* @return float rep of string value
*/
float ToFloat(PRInt32* aErrorCode) const;
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/**
* Perform string to int conversion.
* @param aErrorCode will contain error if one occurs
* @param aRadix tells us which radix to assume; kAutoDetect tells us to determine the radix for you.
* @return int rep of string value, and possible (out) error code
*/
PRInt32 ToInteger(PRInt32* aErrorCode,PRUint32 aRadix=kRadix10) const;
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/**********************************************************************
String manipulation methods...
*********************************************************************/
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/**
* Functionally equivalent to assign or operator=
*
*/
nsCString& SetString(const char* aString,PRInt32 aLength=-1) {return Assign(aString,aLength);}
nsCString& SetString(const nsStr& aString,PRInt32 aLength=-1) {return Assign(aString,aLength);}
/**
* assign given string to this string
* @param aStr: buffer to be assigned to this
* @param aCount is the length of the given str (or -1) if you want me to determine its length
* NOTE: IFF you pass -1 as aCount, then your buffer must be null terminated.
*
* @return this
*/
nsCString& Assign(const nsStr& aString,PRInt32 aCount=-1);
nsCString& Assign(const char* aString,PRInt32 aCount=-1);
nsCString& Assign(const PRUnichar* aString,PRInt32 aCount=-1);
nsCString& Assign(PRUnichar aChar);
nsCString& Assign(char aChar);
/**
* here come a bunch of assignment operators...
* @param aString: string to be added to this
* @return this
*/
nsCString& operator=(const nsCString& aString) {return Assign(aString);}
nsCString& operator=(const nsStr& aString) {return Assign(aString);}
nsCString& operator=(PRUnichar aChar) {return Assign(aChar);}
nsCString& operator=(char aChar) {return Assign(aChar);}
nsCString& operator=(const char* aCString) {return Assign(aCString);}
nsCString& operator=(const PRUnichar* aString) {return Assign(aString);}
#ifdef AIX
nsCString& operator=(const nsSubsumeCStr& aSubsumeString); // AIX requires a const here
#else
nsCString& operator=(nsSubsumeCStr& aSubsumeString);
#endif
/**
* Here's a bunch of methods that append varying types...
* @param various...
* @return this
*/
nsCString& operator+=(const nsCString& aString){return Append(aString,aString.mLength);}
nsCString& operator+=(const char* aCString) {return Append(aCString);}
nsCString& operator+=(const PRUnichar aChar){return Append(aChar);}
nsCString& operator+=(const char aChar){return Append(aChar);}
nsCString& operator+=(const int anInt){return Append(anInt,10);}
/*
* Appends n characters from given string to this,
* This version computes the length of your given string
*
* @param aString is the source to be appended to this
* @return number of chars copied
*/
nsCString& Append(const nsCString& aString) {return Append(aString,aString.mLength);}
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/*
* Appends n characters from given string to this,
*
* @param aString is the source to be appended to this
* @param aCount -- number of chars to copy; -1 tells us to compute the strlen for you
* NOTE: IFF you pass -1 as aCount, then your buffer must be null terminated.
*
* @return number of chars copied
*/
nsCString& Append(const nsCString& aString,PRInt32 aCount);
nsCString& Append(const nsStr& aString,PRInt32 aCount=-1);
nsCString& Append(const char* aString,PRInt32 aCount=-1);
nsCString& Append(PRUnichar aChar);
nsCString& Append(char aChar);
nsCString& Append(PRInt32 aInteger,PRInt32 aRadix=10); //radix=8,10 or 16
nsCString& Append(float aFloat);
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/*
* Copies n characters from this string to given string,
* starting at the leftmost offset.
*
*
* @param aCopy -- Receiving string
* @param aCount -- number of chars to copy
* @return number of chars copied
*/
PRUint32 Left(nsCString& aCopy,PRInt32 aCount) const;
/*
* Copies n characters from this string to given string,
* starting at the given offset.
*
*
* @param aCopy -- Receiving string
* @param aCount -- number of chars to copy
* @param anOffset -- position where copying begins
* @return number of chars copied
*/
PRUint32 Mid(nsCString& aCopy,PRUint32 anOffset,PRInt32 aCount) const;
/*
* Copies n characters from this string to given string,
* starting at rightmost char.
*
*
* @param aCopy -- Receiving string
* @param aCount -- number of chars to copy
* @return number of chars copied
*/
PRUint32 Right(nsCString& aCopy,PRInt32 aCount) const;
/*
* This method inserts n chars from given string into this
* string at str[anOffset].
*
* @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
* NOTE: IFF you pass -1 as aCount, then your buffer must be null terminated.
*
* @return number of chars inserted into this.
*/
nsCString& Insert(const nsCString& aCopy,PRUint32 anOffset,PRInt32 aCount=-1);
/**
* Insert a given string into this string at
* a specified offset.
*
* @param aString* to be inserted into this string
* @param anOffset is insert pos in str
* @return the number of chars inserted into this string
*/
nsCString& Insert(const char* aChar,PRUint32 anOffset,PRInt32 aCount=-1);
/**
* Insert a single char into this string at
* a specified offset.
*
* @param character to be inserted into this string
* @param anOffset is insert pos in str
* @return the number of chars inserted into this string
*/
nsCString& Insert(PRUnichar aChar,PRUint32 anOffset);
nsCString& Insert(char aChar,PRUint32 anOffset);
/*
* This method is used to cut characters in this string
* starting at anOffset, continuing for aCount chars.
*
* @param anOffset -- start pos for cut operation
* @param aCount -- number of chars to be cut
* @return *this
*/
nsCString& Cut(PRUint32 anOffset,PRInt32 aCount);
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/**********************************************************************
Searching methods...
*********************************************************************/
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/**
* Search for given character within this string.
* This method does so by using a binary search,
* so your string HAD BETTER BE ORDERED!
*
* @param aChar is the unicode char to be found
* @return offset in string, or -1 (kNotFound)
*/
PRInt32 BinarySearch(PRUnichar aChar) const;
/**
* Search for given substring within this string
*
* @param aString is substring to be sought in this
* @param aIgnoreCase selects case sensitivity
* @param anOffset tells us where in this strig to start searching
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* @param aCount tells us how many iterations to make starting at the given offset
* @return offset in string, or -1 (kNotFound)
*/
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PRInt32 Find(const nsStr& aString,PRBool aIgnoreCase=PR_FALSE,PRInt32 anOffset=-1,PRInt32 aCount=-1) const;
PRInt32 Find(const char* aString,PRBool aIgnoreCase=PR_FALSE,PRInt32 anOffset=-1,PRInt32 aCount=-1) const;
PRInt32 Find(const PRUnichar* aString,PRBool aIgnoreCase=PR_FALSE,PRInt32 anOffset=-1,PRInt32 aCount=-1) const;
/**
* Search for given char within this string
*
* @param aString is substring to be sought in this
* @param anOffset tells us where in this strig to start searching
* @param aIgnoreCase selects case sensitivity
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* @param aCount tells us how many iterations to make starting at the given offset
* @return find pos in string, or -1 (kNotFound)
*/
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PRInt32 FindChar(PRUnichar aChar,PRBool aIgnoreCase=PR_FALSE,PRInt32 anOffset=-1,PRInt32 aCount=-1) const;
/**
* This method searches this string for the first character
* found in the given charset
* @param aString contains set of chars to be found
* @param anOffset tells us where to start searching in this
* @return -1 if not found, else the offset in this
*/
PRInt32 FindCharInSet(const char* aString,PRInt32 anOffset=-1) const;
PRInt32 FindCharInSet(const PRUnichar* aString,PRInt32 anOffset=-1) const;
PRInt32 FindCharInSet(const nsStr& aString,PRInt32 anOffset=-1) const;
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/**
* This methods scans the string backwards, looking for the given string
* @param aString is substring to be sought in this
* @param aIgnoreCase tells us whether or not to do caseless compare
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* @param aCount tells us how many iterations to make starting at the given offset
* @return offset in string, or -1 (kNotFound)
*/
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PRInt32 RFind(const char* aCString,PRBool aIgnoreCase=PR_FALSE,PRInt32 anOffset=-1,PRInt32 aCount=-1) const;
PRInt32 RFind(const nsStr& aString,PRBool aIgnoreCase=PR_FALSE,PRInt32 anOffset=-1,PRInt32 aCount=-1) const;
PRInt32 RFind(const PRUnichar* aString,PRBool aIgnoreCase=PR_FALSE,PRInt32 anOffset=-1,PRInt32 aCount=-1) const;
/**
* Search for given char within this string
*
* @param aString is substring to be sought in this
* @param anOffset tells us where in this strig to start searching
* @param aIgnoreCase selects case sensitivity
* @return find pos in string, or -1 (kNotFound)
*/
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PRInt32 RFindChar(PRUnichar aChar,PRBool aIgnoreCase=PR_FALSE,PRInt32 anOffset=-1,PRInt32 aCount=-1) const;
/**
* This method searches this string for the last character
* found in the given string
* @param aString contains set of chars to be found
* @param anOffset tells us where to start searching in this
* @return -1 if not found, else the offset in this
*/
PRInt32 RFindCharInSet(const char* aString,PRInt32 anOffset=-1) const;
PRInt32 RFindCharInSet(const PRUnichar* aString,PRInt32 anOffset=-1) const;
PRInt32 RFindCharInSet(const nsStr& aString,PRInt32 anOffset=-1) const;
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/**********************************************************************
Comparison methods...
*********************************************************************/
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/**
* Compares a given string type to this string.
* @update gess 7/27/98
* @param S is the string to be compared
* @param aIgnoreCase tells us how to treat case
* @param aCount tells us how many chars to compare
* @return -1,0,1
*/
virtual PRInt32 Compare(const nsStr &aString,PRBool aIgnoreCase=PR_FALSE,PRInt32 aCount=-1) const;
virtual PRInt32 Compare(const char* aString,PRBool aIgnoreCase=PR_FALSE,PRInt32 aCount=-1) const;
virtual PRInt32 Compare(const PRUnichar* aString,PRBool aIgnoreCase=PR_FALSE,PRInt32 aCount=-1) const;
/**
* These methods compare a given string type to this one
* @param aString is the string to be compared to this
* @return TRUE or FALSE
*/
PRBool operator==(const nsStr &aString) const;
PRBool operator==(const char* aString) const;
PRBool operator==(const PRUnichar* aString) const;
/**
* These methods perform a !compare of a given string type to this
* @param aString is the string to be compared to this
* @return TRUE
*/
PRBool operator!=(const nsStr &aString) const;
PRBool operator!=(const char* aString) const;
PRBool operator!=(const PRUnichar* aString) const;
/**
* These methods test if a given string is < than this
* @param aString is the string to be compared to this
* @return TRUE or FALSE
*/
PRBool operator<(const nsStr &aString) const;
PRBool operator<(const char* aString) const;
PRBool operator<(const PRUnichar* aString) const;
/**
* These methods test if a given string is > than this
* @param aString is the string to be compared to this
* @return TRUE or FALSE
*/
PRBool operator>(const nsStr &S) const;
PRBool operator>(const char* aString) const;
PRBool operator>(const PRUnichar* aString) const;
/**
* These methods test if a given string is <= than this
* @param aString is the string to be compared to this
* @return TRUE or FALSE
*/
PRBool operator<=(const nsStr &S) const;
PRBool operator<=(const char* aString) const;
PRBool operator<=(const PRUnichar* aString) const;
/**
* These methods test if a given string is >= than this
* @param aString is the string to be compared to this
* @return TRUE or FALSE
*/
PRBool operator>=(const nsStr &S) const;
PRBool operator>=(const char* aString) const;
PRBool operator>=(const PRUnichar* aString) const;
/**
* 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.
*
* @param aString -- the string to compare to this
* @param aCount -- number of chars in given string you want to compare
* @return TRUE if equal
*/
PRBool Equals(const nsString &aString,PRBool aIgnoreCase=PR_FALSE,PRInt32 aCount=-1) const;
PRBool Equals(const nsStr& aString,PRBool aIgnoreCase=PR_FALSE,PRInt32 aCount=-1) const;
PRBool Equals(const char* aString,PRBool aIgnoreCase=PR_FALSE,PRInt32 aCount=-1) const;
PRBool Equals(const PRUnichar* aString,PRBool aIgnoreCase=PR_FALSE,PRInt32 aCount=-1) const;
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PRBool EqualsIgnoreCase(const nsStr& aString) const;
PRBool EqualsIgnoreCase(const char* aString,PRInt32 aCount=-1) const;
PRBool EqualsIgnoreCase(const PRUnichar* aString,PRInt32 aCount=-1) const;
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void DebugDump(void) const;
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static void Recycle(nsCString* aString);
static nsCString* CreateString(void);
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};
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extern NS_COM int fputs(const nsCString& aString, FILE* out);
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//ostream& operator<<(ostream& aStream,const nsCString& aString);
//virtual void DebugDump(ostream& aStream) const;
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/**************************************************************
Here comes the AutoString class which uses internal memory
(typically found on the stack) for its default buffer.
If the buffer needs to grow, it gets reallocated on the heap.
**************************************************************/
class NS_COM nsCAutoString : public nsCString {
public:
nsCAutoString();
nsCAutoString(const char* aString,PRInt32 aLength=-1);
nsCAutoString(const CBufDescriptor& aBuffer);
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nsCAutoString(const PRUnichar* aString,PRInt32 aLength=-1);
nsCAutoString(const nsStr& aString);
nsCAutoString(const nsCAutoString& aString);
#ifdef AIX
nsCAutoString(const nsSubsumeCStr& aSubsumeStr); // AIX requires a const
#else
nsCAutoString(nsSubsumeCStr& aSubsumeStr);
#endif // AIX
nsCAutoString(PRUnichar aChar);
virtual ~nsCAutoString();
nsCAutoString& operator=(const nsCAutoString& aString) {nsCString::Assign(aString); return *this;}
nsCAutoString& operator=(const nsCString& aString) {nsCString::Assign(aString); return *this;}
nsCAutoString& operator=(const char* aCString) {nsCString::Assign(aCString); return *this;}
nsCAutoString& operator=(PRUnichar aChar) {nsCString::Assign(aChar); return *this;}
nsCAutoString& operator=(char aChar) {nsCString::Assign(aChar); return *this;}
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/**
* Retrieve the size of this string
* @return string length
*/
virtual void SizeOf(nsISizeOfHandler* aHandler, PRUint32* aResult) const;
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char mBuffer[kDefaultStringSize];
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};
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/***************************************************************
The subsumestr class is very unusual.
It differs from a normal string in that it doesn't use normal
copy semantics when another string is assign to this.
Instead, it "steals" the contents of the source string.
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This is very handy for returning nsString classes as part of
an operator+(...) for example, in that it cuts down the number
of copy operations that must occur.
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You should probably not use this class unless you really know
what you're doing.
***************************************************************/
class NS_COM nsSubsumeCStr : public nsCString {
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public:
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nsSubsumeCStr(nsStr& aString);
nsSubsumeCStr(PRUnichar* aString,PRBool assumeOwnership,PRInt32 aLength=-1);
nsSubsumeCStr(char* aString,PRBool assumeOwnership,PRInt32 aLength=-1);
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};
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#endif
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