mirror of
https://github.com/mozilla/gecko-dev.git
synced 2024-12-25 01:01:52 +00:00
661 lines
22 KiB
C++
661 lines
22 KiB
C++
/* -*- 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.
|
|
*
|
|
* Original Author:
|
|
* Scott Collins <scc@mozilla.org>
|
|
*
|
|
* Contributor(s):
|
|
*/
|
|
|
|
#ifndef _nsAWritableString_h__
|
|
#define _nsAWritableString_h__
|
|
|
|
// See also...
|
|
#include "nsAReadableString.h"
|
|
|
|
|
|
template <class CharT>
|
|
struct nsWritableFragment
|
|
{
|
|
CharT* mStart;
|
|
CharT* mEnd;
|
|
PRUint32 mFragmentIdentifier;
|
|
|
|
nsWritableFragment()
|
|
: mStart(0), mEnd(0), mFragmentIdentifier(0)
|
|
{
|
|
// nothing else to do here
|
|
}
|
|
};
|
|
|
|
template <class CharT> class basic_nsAWritableString;
|
|
|
|
template <class CharT>
|
|
class nsWritingIterator
|
|
: public bidirectional_iterator_tag
|
|
{
|
|
public:
|
|
typedef ptrdiff_t difference_type;
|
|
typedef CharT value_type;
|
|
typedef CharT* pointer;
|
|
typedef CharT& reference;
|
|
typedef bidirectional_iterator_tag iterator_category;
|
|
|
|
private:
|
|
friend class basic_nsAWritableString<CharT>;
|
|
|
|
nsWritableFragment<CharT> mFragment;
|
|
CharT* mPosition;
|
|
basic_nsAWritableString<CharT>* mOwningString;
|
|
|
|
inline void normalize_forward();
|
|
inline void normalize_backward();
|
|
|
|
nsWritingIterator( nsWritableFragment<CharT>& aFragment,
|
|
CharT* aStartingPosition,
|
|
basic_nsAWritableString<CharT>& aOwningString )
|
|
: mFragment(aFragment),
|
|
mPosition(aStartingPosition),
|
|
mOwningString(&aOwningString)
|
|
{
|
|
// nothing else to do here
|
|
}
|
|
|
|
public:
|
|
// nsWritingIterator( const nsWritingIterator<CharT>& ); ...use default copy-constructor
|
|
// nsWritingIterator<CharT>& operator=( const nsWritingIterator<CharT>& ); ...use default copy-assignment operator
|
|
|
|
|
|
reference
|
|
operator*() const
|
|
{
|
|
return *mPosition;
|
|
}
|
|
|
|
pointer
|
|
operator->() const
|
|
{
|
|
return mPosition;
|
|
}
|
|
|
|
nsWritingIterator<CharT>&
|
|
operator++()
|
|
{
|
|
++mPosition;
|
|
normalize_forward();
|
|
return *this;
|
|
}
|
|
|
|
nsWritingIterator<CharT>
|
|
operator++( int )
|
|
{
|
|
nsWritingIterator<CharT> result(*this);
|
|
++mPosition;
|
|
normalize_forward();
|
|
return result;
|
|
}
|
|
|
|
nsWritingIterator<CharT>&
|
|
operator--()
|
|
{
|
|
normalize_backward();
|
|
--mPosition;
|
|
return *this;
|
|
}
|
|
|
|
nsWritingIterator<CharT>
|
|
operator--( int )
|
|
{
|
|
nsWritingIterator<CharT> result(*this);
|
|
normalize_backward();
|
|
--mPosition;
|
|
return result;
|
|
}
|
|
|
|
const nsWritableFragment<CharT>&
|
|
fragment() const
|
|
{
|
|
return mFragment;
|
|
}
|
|
|
|
difference_type
|
|
size_forward() const
|
|
{
|
|
return mFragment.mEnd - mPosition;
|
|
}
|
|
|
|
difference_type
|
|
size_backward() const
|
|
{
|
|
return mPosition - mFragment.mStart;
|
|
}
|
|
|
|
nsWritingIterator<CharT>&
|
|
operator+=( difference_type n )
|
|
{
|
|
if ( n < 0 )
|
|
return operator-=(-n);
|
|
|
|
while ( n )
|
|
{
|
|
difference_type one_hop = NS_MIN(n, size_forward());
|
|
mPosition += one_hop;
|
|
normalize_forward();
|
|
n -= one_hop;
|
|
}
|
|
|
|
return *this;
|
|
}
|
|
|
|
nsWritingIterator<CharT>&
|
|
operator-=( difference_type n )
|
|
{
|
|
if ( n < 0 )
|
|
return operator+=(-n);
|
|
|
|
while ( n )
|
|
{
|
|
difference_type one_hop = NS_MIN(n, size_backward());
|
|
mPosition -= one_hop;
|
|
normalize_backward();
|
|
n -= one_hop;
|
|
}
|
|
|
|
return *this;
|
|
}
|
|
|
|
PRUint32
|
|
write( const value_type* s, PRUint32 n )
|
|
{
|
|
NS_ASSERTION(size_forward() > 0, "You can't |write| into an |nsWritingIterator| with no space!");
|
|
|
|
n = NS_MIN(n, PRUint32(size_forward()));
|
|
nsCharTraits<value_type>::copy(mPosition, s, n);
|
|
operator+=( difference_type(n) );
|
|
return n;
|
|
}
|
|
};
|
|
|
|
|
|
/*
|
|
This file defines the abstract interfaces |nsAWritableString| and
|
|
|nsAWritableCString|.
|
|
|
|
|nsAWritableString| is a string of |PRUnichar|s. |nsAWritableCString| (note the
|
|
'C') is a string of |char|s.
|
|
*/
|
|
|
|
template <class CharT>
|
|
class basic_nsAWritableString
|
|
: public basic_nsAReadableString<CharT>
|
|
/*
|
|
...
|
|
*/
|
|
{
|
|
// friend class nsWritingIterator<CharT>;
|
|
|
|
public:
|
|
typedef PRUint32 size_type;
|
|
typedef PRUint32 index_type;
|
|
|
|
typedef nsWritingIterator<CharT> iterator;
|
|
|
|
virtual CharT* GetWritableFragment( nsWritableFragment<CharT>&, nsFragmentRequest, PRUint32 = 0 ) = 0;
|
|
|
|
|
|
nsWritingIterator<CharT>
|
|
BeginWriting( PRUint32 aOffset = 0 )
|
|
{
|
|
nsWritableFragment<CharT> fragment;
|
|
CharT* startPos = GetWritableFragment(fragment, kFragmentAt, aOffset);
|
|
return nsWritingIterator<CharT>(fragment, startPos, *this);
|
|
}
|
|
|
|
|
|
nsWritingIterator<CharT>
|
|
EndWriting( PRUint32 aOffset = 0 )
|
|
{
|
|
nsWritableFragment<CharT> fragment;
|
|
CharT* startPos = GetWritableFragment(fragment, kFragmentAt, NS_MAX(0U, Length()-aOffset));
|
|
return nsWritingIterator<CharT>(fragment, startPos, *this);
|
|
}
|
|
|
|
|
|
virtual void SetCapacity( PRUint32 ) = 0;
|
|
virtual void SetLength( PRUint32 ) = 0;
|
|
|
|
|
|
void
|
|
Truncate( PRUint32 aNewLength=0 )
|
|
{
|
|
NS_ASSERTION(aNewLength<=Length(), "Can't use |Truncate()| to make a string longer.");
|
|
|
|
if ( aNewLength < Length() )
|
|
SetLength(aNewLength);
|
|
}
|
|
|
|
|
|
// PRBool SetCharAt( char_type, index_type ) = 0;
|
|
|
|
|
|
|
|
// void ToLowerCase();
|
|
// void ToUpperCase();
|
|
|
|
// void StripChars( const CharT* aSet );
|
|
// void StripChar( ... );
|
|
// void StripWhitespace();
|
|
// void ReplaceChar( ... );
|
|
// void ReplaceSubstring( ... );
|
|
// void Trim( ... );
|
|
// void CompressSet( ... );
|
|
// void CompressWhitespace( ... );
|
|
|
|
|
|
|
|
//
|
|
// |operator=()|, |Assign()|
|
|
//
|
|
|
|
basic_nsAWritableString<CharT>& operator=( const basic_nsAReadableString<CharT>& aReadable ) { do_AssignFromReadable(aReadable); return *this; }
|
|
basic_nsAWritableString<CharT>& operator=( const nsPromiseReadable<CharT>& aReadable ) { Assign(aReadable); return *this; }
|
|
basic_nsAWritableString<CharT>& operator=( const CharT* aPtr ) { do_AssignFromElementPtr(aPtr); return *this; }
|
|
basic_nsAWritableString<CharT>& operator=( CharT aChar ) { do_AssignFromElement(aChar); return *this; }
|
|
|
|
void Assign( const basic_nsAReadableString<CharT>& aReadable ) { do_AssignFromReadable(aReadable); }
|
|
void Assign( const nsPromiseReadable<CharT>& aReadable ) { aReadable.Promises(*this) ? AssignFromPromise(aReadable) : do_AssignFromReadable(aReadable); }
|
|
// void Assign( const nsReadingIterator<CharT>& aStart, const nsReadingIterator<CharT>& aEnd ) { do_AssignFromIterators(aStart, aEnd); }
|
|
void Assign( const CharT* aPtr ) { do_AssignFromElementPtr(aPtr); }
|
|
void Assign( const CharT* aPtr, PRUint32 aLength ) { do_AssignFromElementPtrLength(aPtr, aLength); }
|
|
void Assign( CharT aChar ) { do_AssignFromElement(aChar); }
|
|
|
|
|
|
|
|
//
|
|
// |operator+=()|, |Append()|
|
|
//
|
|
|
|
basic_nsAWritableString<CharT>& operator+=( const basic_nsAReadableString<CharT>& aReadable ) { do_AppendFromReadable(aReadable); return *this; }
|
|
basic_nsAWritableString<CharT>& operator+=( const nsPromiseReadable<CharT>& aReadable ) { Append(aReadable); return *this; }
|
|
basic_nsAWritableString<CharT>& operator+=( const CharT* aPtr ) { do_AppendFromElementPtr(aPtr); return *this; }
|
|
basic_nsAWritableString<CharT>& operator+=( CharT aChar ) { do_AppendFromElement(aChar); return *this; }
|
|
|
|
void Append( const basic_nsAReadableString<CharT>& aReadable ) { do_AppendFromReadable(aReadable); }
|
|
void Append( const nsPromiseReadable<CharT>& aReadable ) { aReadable.Promises(*this) ? AppendFromPromise(aReadable) : do_AppendFromReadable(aReadable); }
|
|
// void Append( const nsReadingIterator<CharT>& aStart, const nsReadingIterator<CharT>& aEnd ) { do_AppendFromIterators(aStart, aEnd); }
|
|
void Append( const CharT* aPtr ) { do_AppendFromElementPtr(aPtr); }
|
|
void Append( const CharT* aPtr, PRUint32 aLength ) { do_AppendFromElementPtrLength(aPtr, aLength); }
|
|
void Append( CharT aChar ) { do_AppendFromElement(aChar); }
|
|
|
|
|
|
|
|
//
|
|
// |Insert()|
|
|
// Note: I would really like to move the |atPosition| parameter to the front of the argument list
|
|
//
|
|
|
|
void Insert( const basic_nsAReadableString<CharT>& aReadable, PRUint32 atPosition ) { do_InsertFromReadable(aReadable, atPosition); }
|
|
void Insert( const nsPromiseReadable<CharT>& aReadable, PRUint32 atPosition ) { aReadable.Promises(*this) ? InsertFromPromise(aReadable, atPosition) : do_InsertFromReadable(aReadable, atPosition); }
|
|
// void Insert( const nsReadingIterator<CharT>& aStart, const nsReadingIterator<CharT>& aEnd, PRUint32 atPosition ) { do_InsertFromIterators(aStart, aEnd, atPosition); }
|
|
void Insert( const CharT* aPtr, PRUint32 atPosition ) { do_InsertFromElementPtr(aPtr, atPosition); }
|
|
void Insert( const CharT* aPtr, PRUint32 atPosition, PRUint32 aLength ) { do_InsertFromElementPtrLength(aPtr, atPosition, aLength); }
|
|
void Insert( CharT aChar, PRUint32 atPosition ) { do_InsertFromElement(aChar, atPosition); }
|
|
|
|
|
|
|
|
virtual void Cut( PRUint32 cutStart, PRUint32 cutLength );
|
|
|
|
|
|
|
|
void Replace( PRUint32 cutStart, PRUint32 cutLength, const basic_nsAReadableString<CharT>& aReadable ) { do_ReplaceFromReadable(cutStart, cutLength, aReadable); }
|
|
void Replace( PRUint32 cutStart, PRUint32 cutLength, const nsPromiseReadable<CharT>& aReadable ) { aReadable.Promises(*this) ? ReplaceFromPromise(cutStart, cutLength, aReadable) : do_ReplaceFromReadable(cutStart, cutLength, aReadable); }
|
|
// void Replace( PRUint32, PRUint32, const nsReadingIterator<CharT>&, const nsReadingIterator<CharT>& );
|
|
// void Replace( PRUint32, PRUint32, const CharT* );
|
|
// void Replace( PRUint32, PRUint32, const CharT*, PRUint32 );
|
|
// void Replace( PRUint32, PRUint32, CharT );
|
|
|
|
private:
|
|
typedef typename nsCharTraits<CharT>::incompatible_char_type incompatible_char_type;
|
|
|
|
// NOT TO BE IMPLEMENTED
|
|
void operator= ( incompatible_char_type );
|
|
void Assign ( incompatible_char_type );
|
|
void operator+= ( incompatible_char_type );
|
|
void Append ( incompatible_char_type );
|
|
void Insert ( incompatible_char_type, PRUint32 );
|
|
// void Replace ( PRUint32, PRUint32, incompatible_char_type );
|
|
|
|
|
|
protected:
|
|
virtual void do_AssignFromReadable( const basic_nsAReadableString<CharT>& );
|
|
void AssignFromPromise( const nsPromiseReadable<CharT>& );
|
|
// virtual void do_AssignFromIterators( nsReadingIterator<CharT>, nsReadingIterator<CharT> );
|
|
virtual void do_AssignFromElementPtr( const CharT* );
|
|
virtual void do_AssignFromElementPtrLength( const CharT*, PRUint32 );
|
|
virtual void do_AssignFromElement( CharT );
|
|
|
|
virtual void do_AppendFromReadable( const basic_nsAReadableString<CharT>& );
|
|
void AppendFromPromise( const nsPromiseReadable<CharT>& );
|
|
// virtual void do_AppendFromIterators( nsReadingIterator<CharT>, nsReadingIterator<CharT> );
|
|
virtual void do_AppendFromElementPtr( const CharT* );
|
|
virtual void do_AppendFromElementPtrLength( const CharT*, PRUint32 );
|
|
virtual void do_AppendFromElement( CharT );
|
|
|
|
virtual void do_InsertFromReadable( const basic_nsAReadableString<CharT>&, PRUint32 );
|
|
void InsertFromPromise( const nsPromiseReadable<CharT>&, PRUint32 );
|
|
// virtual void do_InsertFromIterators( nsReadingIterator<CharT>, nsReadingIterator<CharT>, PRUint32 );
|
|
virtual void do_InsertFromElementPtr( const CharT*, PRUint32 );
|
|
virtual void do_InsertFromElementPtrLength( const CharT*, PRUint32, PRUint32 );
|
|
virtual void do_InsertFromElement( CharT, PRUint32 );
|
|
|
|
virtual void do_ReplaceFromReadable( PRUint32, PRUint32, const basic_nsAReadableString<CharT>& );
|
|
void ReplaceFromPromise( PRUint32 cutStart, PRUint32 cutLength, const nsPromiseReadable<CharT>& );
|
|
// virtual void do_ReplaceFromIterators( ... );
|
|
// virtual void do_ReplaceFromElementPtr( ... );
|
|
// virtual void do_ReplaceFromElementPtrLength( ... );
|
|
// virtual void do_ReplaceFromElement( ... );
|
|
};
|
|
|
|
|
|
|
|
//
|
|
// |nsWritingIterator|s
|
|
//
|
|
|
|
template <class CharT>
|
|
inline
|
|
void
|
|
nsWritingIterator<CharT>::normalize_forward()
|
|
{
|
|
if ( mPosition == mFragment.mEnd )
|
|
if ( mOwningString->GetWritableFragment(mFragment, kNextFragment) )
|
|
mPosition = mFragment.mStart;
|
|
}
|
|
|
|
template <class CharT>
|
|
inline
|
|
void
|
|
nsWritingIterator<CharT>::normalize_backward()
|
|
{
|
|
if ( mPosition == mFragment.mStart )
|
|
if ( mOwningString->GetWritableFragment(mFragment, kPrevFragment) )
|
|
mPosition = mFragment.mEnd;
|
|
}
|
|
|
|
template <class CharT>
|
|
inline
|
|
PRBool
|
|
operator==( const nsWritingIterator<CharT>& lhs, const nsWritingIterator<CharT>& rhs )
|
|
{
|
|
return lhs.operator->() == rhs.operator->();
|
|
}
|
|
|
|
#ifdef HAVE_CPP_UNAMBIGUOUS_STD_NOTEQUAL
|
|
template <class CharT>
|
|
inline
|
|
PRBool
|
|
operator!=( const nsWritingIterator<CharT>& lhs, const nsWritingIterator<CharT>& rhs )
|
|
{
|
|
return lhs.operator->() != rhs.operator->();
|
|
}
|
|
#endif
|
|
|
|
|
|
|
|
//
|
|
// |Assign()|
|
|
//
|
|
|
|
template <class CharT>
|
|
void
|
|
basic_nsAWritableString<CharT>::do_AssignFromReadable( const basic_nsAReadableString<CharT>& rhs )
|
|
{
|
|
SetLength(rhs.Length());
|
|
copy_string(rhs.BeginReading(), rhs.EndReading(), BeginWriting());
|
|
}
|
|
|
|
template <class CharT>
|
|
void
|
|
basic_nsAWritableString<CharT>::AssignFromPromise( const nsPromiseReadable<CharT>& aReadable )
|
|
{
|
|
PRUint32 length = aReadable.Length();
|
|
if ( CharT* buffer = new CharT[length] )
|
|
{
|
|
copy_string(aReadable.BeginReading(), aReadable.EndReading(), buffer);
|
|
do_AssignFromElementPtrLength(buffer, length);
|
|
delete buffer;
|
|
}
|
|
}
|
|
|
|
#if 0
|
|
template <class CharT>
|
|
void
|
|
basic_nsAWritableString<CharT>::do_AssignFromIterators( const nsReadingIterator<CharT>& aStart, const nsReadingIterator<CharT>& aEnd )
|
|
{
|
|
SetLength(distance(aStart, aEnd));
|
|
copy_string(aStart, aEnd, BeginWriting());
|
|
}
|
|
#endif
|
|
|
|
template <class CharT>
|
|
void
|
|
basic_nsAWritableString<CharT>::do_AssignFromElementPtr( const CharT* aPtr )
|
|
{
|
|
do_AssignFromReadable(basic_nsLiteralString<CharT>(aPtr));
|
|
}
|
|
|
|
template <class CharT>
|
|
void
|
|
basic_nsAWritableString<CharT>::do_AssignFromElementPtrLength( const CharT* aPtr, PRUint32 aLength )
|
|
{
|
|
do_AssignFromReadable(basic_nsLiteralString<CharT>(aPtr, aLength));
|
|
}
|
|
|
|
template <class CharT>
|
|
void
|
|
basic_nsAWritableString<CharT>::do_AssignFromElement( CharT aChar )
|
|
{
|
|
do_AssignFromReadable(basic_nsLiteralChar<CharT>(aChar));
|
|
}
|
|
|
|
|
|
|
|
//
|
|
// |Append()|
|
|
//
|
|
|
|
template <class CharT>
|
|
void
|
|
basic_nsAWritableString<CharT>::do_AppendFromReadable( const basic_nsAReadableString<CharT>& rhs )
|
|
{
|
|
PRUint32 oldLength = Length();
|
|
SetLength(oldLength + rhs.Length());
|
|
copy_string(rhs.BeginReading(), rhs.EndReading(), BeginWriting(oldLength));
|
|
}
|
|
|
|
template <class CharT>
|
|
void
|
|
basic_nsAWritableString<CharT>::AppendFromPromise( const nsPromiseReadable<CharT>& aReadable )
|
|
{
|
|
PRUint32 length = aReadable.Length();
|
|
if ( CharT* buffer = new CharT[length] )
|
|
{
|
|
copy_string(aReadable.BeginReading(), aReadable.EndReading(), buffer);
|
|
do_AppendFromElementPtrLength(buffer, length);
|
|
delete buffer;
|
|
}
|
|
}
|
|
|
|
#if 0
|
|
template <class CharT>
|
|
void
|
|
basic_nsAWritableString<CharT>::do_AppendFromIterators( const nsReadingIterator<CharT>& aStart, const nsReadingIterator<CharT>& aEnd )
|
|
{
|
|
PRUint32 oldLength = Length();
|
|
SetLength(oldLength + distance(aStart, aEnd));
|
|
copy_string(aStart, aEnd, BeginWriting(oldLength));
|
|
}
|
|
#endif
|
|
|
|
template <class CharT>
|
|
void
|
|
basic_nsAWritableString<CharT>::do_AppendFromElementPtr( const CharT* aChar )
|
|
{
|
|
do_AppendFromReadable(basic_nsLiteralString<CharT>(aChar));
|
|
}
|
|
|
|
template <class CharT>
|
|
void
|
|
basic_nsAWritableString<CharT>::do_AppendFromElementPtrLength( const CharT* aChar, PRUint32 aLength )
|
|
{
|
|
do_AppendFromReadable(basic_nsLiteralString<CharT>(aChar, aLength));
|
|
}
|
|
|
|
template <class CharT>
|
|
inline
|
|
void
|
|
basic_nsAWritableString<CharT>::do_AppendFromElement( CharT aChar )
|
|
{
|
|
PRUint32 oldLength = Length();
|
|
SetLength(oldLength+1);
|
|
nsWritableFragment<CharT> fragment;
|
|
*GetWritableFragment(fragment, kFragmentAt, oldLength) = aChar;
|
|
}
|
|
|
|
|
|
|
|
//
|
|
// |Insert()|
|
|
//
|
|
|
|
template <class CharT>
|
|
void
|
|
basic_nsAWritableString<CharT>::do_InsertFromReadable( const basic_nsAReadableString<CharT>& aReadable, PRUint32 atPosition )
|
|
{
|
|
PRUint32 oldLength = Length();
|
|
SetLength(oldLength + aReadable.Length());
|
|
if ( atPosition < oldLength )
|
|
copy_string_backward(BeginReading(atPosition), BeginReading(oldLength), EndWriting());
|
|
else
|
|
atPosition = oldLength;
|
|
copy_string(aReadable.BeginReading(), aReadable.EndReading(), BeginWriting(atPosition));
|
|
}
|
|
|
|
template <class CharT>
|
|
void
|
|
basic_nsAWritableString<CharT>::InsertFromPromise( const nsPromiseReadable<CharT>& aReadable, PRUint32 atPosition )
|
|
{
|
|
PRUint32 length = aReadable.Length();
|
|
if ( CharT* buffer = new CharT[length] )
|
|
{
|
|
copy_string(aReadable.BeginReading(), aReadable.EndReading(), buffer);
|
|
do_InsertFromElementPtrLength(buffer, atPosition, length);
|
|
delete buffer;
|
|
}
|
|
}
|
|
|
|
template <class CharT>
|
|
void
|
|
basic_nsAWritableString<CharT>::do_InsertFromElementPtr( const CharT* aPtr, PRUint32 atPosition )
|
|
{
|
|
do_InsertFromReadable(basic_nsLiteralString<CharT>(aPtr), atPosition);
|
|
}
|
|
|
|
template <class CharT>
|
|
void
|
|
basic_nsAWritableString<CharT>::do_InsertFromElementPtrLength( const CharT* aPtr, PRUint32 atPosition, PRUint32 aLength )
|
|
{
|
|
do_InsertFromReadable(basic_nsLiteralString<CharT>(aPtr, aLength), atPosition);
|
|
}
|
|
|
|
template <class CharT>
|
|
void
|
|
basic_nsAWritableString<CharT>::do_InsertFromElement( CharT aChar, PRUint32 atPosition )
|
|
{
|
|
do_InsertFromReadable(basic_nsLiteralChar<CharT>(aChar), atPosition);
|
|
}
|
|
|
|
|
|
|
|
//
|
|
// |Cut()|
|
|
//
|
|
|
|
template <class CharT>
|
|
void
|
|
basic_nsAWritableString<CharT>::Cut( PRUint32 cutStart, PRUint32 cutLength )
|
|
{
|
|
copy_string(BeginReading(cutStart+cutLength), EndReading(), BeginWriting(cutStart));
|
|
SetLength(Length()-cutLength);
|
|
}
|
|
|
|
|
|
|
|
//
|
|
// |Replace()|
|
|
//
|
|
|
|
template <class CharT>
|
|
void
|
|
basic_nsAWritableString<CharT>::do_ReplaceFromReadable( PRUint32 cutStart, PRUint32 cutLength, const basic_nsAReadableString<CharT>& aReplacement )
|
|
{
|
|
PRUint32 oldLength = Length();
|
|
|
|
cutStart = NS_MIN(cutStart, oldLength);
|
|
cutLength = NS_MIN(cutLength, oldLength-cutStart);
|
|
PRUint32 cutEnd = cutStart + cutLength;
|
|
|
|
PRUint32 replacementLength = aReplacement.Length();
|
|
PRUint32 replacementEnd = cutStart + replacementLength;
|
|
|
|
PRUint32 newLength = oldLength - cutLength + replacementLength;
|
|
|
|
if ( cutLength > replacementLength )
|
|
copy_string(BeginReading(cutEnd), EndReading(), BeginWriting(replacementEnd));
|
|
SetLength(newLength);
|
|
if ( cutLength < replacementLength )
|
|
copy_string_backward(BeginReading(cutEnd), BeginReading(oldLength), BeginWriting(replacementEnd));
|
|
|
|
copy_string(aReplacement.BeginReading(), aReplacement.EndReading(), BeginWriting(cutStart));
|
|
}
|
|
|
|
template <class CharT>
|
|
void
|
|
basic_nsAWritableString<CharT>::ReplaceFromPromise( PRUint32 cutStart, PRUint32 cutLength, const nsPromiseReadable<CharT>& aReadable )
|
|
{
|
|
PRUint32 length = aReadable.Length();
|
|
if ( CharT* buffer = new CharT[length] )
|
|
{
|
|
copy_string(aReadable.BeginReading(), aReadable.EndReading(), buffer);
|
|
do_ReplaceFromReadable(cutStart, cutLength, basic_nsLiteralString<CharT>(buffer, length));
|
|
delete buffer;
|
|
}
|
|
}
|
|
|
|
|
|
|
|
//
|
|
// Types
|
|
//
|
|
|
|
typedef basic_nsAWritableString<PRUnichar> nsAWritableString;
|
|
typedef basic_nsAWritableString<char> nsAWritableCString;
|
|
|
|
#endif // !defined(_nsAWritableString_h__)
|