2000-03-24 00:09:27 +03:00
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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/*
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* The contents of this file are subject to the Netscape Public
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* License Version 1.1 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.mozilla.org/NPL/
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*
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* Software distributed under the License is distributed on an "AS
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* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
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* implied. See the License for the specific language governing
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* rights and limitations under the License.
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*
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* The Original Code is mozilla.org code.
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*
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* The Initial Developer of the Original Code is Netscape
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* Communications Corporation. Portions created by Netscape are
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2000-06-18 09:00:31 +04:00
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* Copyright (C) 2000 Netscape Communications Corporation. All
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2000-03-24 00:09:27 +03:00
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* Rights Reserved.
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*
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2000-05-12 09:17:51 +04:00
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* Original Author:
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* Scott Collins <scc@mozilla.org>
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*
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2000-03-24 00:09:27 +03:00
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* Contributor(s):
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*/
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2000-05-21 00:43:26 +04:00
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#ifndef nsCharTraits_h___
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#define nsCharTraits_h___
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2000-03-24 00:09:27 +03:00
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2000-03-24 01:42:34 +03:00
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#include <ctype.h>
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// for |EOF|, |WEOF|
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2000-03-24 00:09:27 +03:00
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#include <string.h>
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// for |memcpy|, et al
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#ifndef nscore_h___
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#include "nscore.h"
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// for |PRUnichar|
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#endif
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#ifdef HAVE_CPP_BOOL
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typedef bool nsCharTraits_bool;
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#else
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typedef PRBool nsCharTraits_bool;
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#endif
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template <class CharT>
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struct nsCharTraits
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{
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typedef CharT char_type;
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2000-04-15 03:19:14 +04:00
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typedef char incompatible_char_type;
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2000-03-24 00:09:27 +03:00
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static
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void
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assign( char_type& lhs, const char_type& rhs )
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{
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lhs = rhs;
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}
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// integer representation of characters:
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typedef int int_type;
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static
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char_type
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to_char_type( const int_type& c )
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{
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return char_type(c);
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}
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static
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int_type
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to_int_type( const char_type& c )
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{
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return int_type(c);
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}
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static
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nsCharTraits_bool
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eq_int_type( const int_type& lhs, const int_type& rhs )
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{
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return lhs == rhs;
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}
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// |char_type| comparisons:
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static
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nsCharTraits_bool
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eq( const char_type& lhs, const char_type& rhs )
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{
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return lhs == rhs;
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}
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static
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nsCharTraits_bool
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lt( const char_type& lhs, const char_type& rhs )
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{
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return lhs < rhs;
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}
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// operations on s[n] arrays:
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static
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char_type*
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copy( char_type* s1, const char_type* s2, size_t n )
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{
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char_type* result = s1;
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while ( n-- )
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assign(*s1++, *s2++);
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return result;
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}
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static
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char_type*
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move( char_type* s1, const char_type* s2, size_t n )
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{
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char_type* result = s1;
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if ( n )
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{
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if ( s2 > s1 )
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copy(s1, s2, n);
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else
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{
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s1 += n;
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s2 += n;
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while ( n-- )
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assign(*--s1, *--s2);
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}
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}
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return result;
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}
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static
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char_type*
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assign( char_type* s, size_t n, const char_type& c )
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{
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char_type* result = s;
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while ( n-- )
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assign(*s++, c);
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return result;
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}
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static
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int
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compare( const char_type* s1, const char_type* s2, size_t n )
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{
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for ( ; n--; ++s1, ++s2 )
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{
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if ( lt(*s1, *s2) )
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return -1;
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if ( lt(*s2, *s1) )
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return 1;
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}
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return 0;
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}
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static
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size_t
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length( const char_type* s )
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{
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size_t result = 0;
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2000-06-18 09:00:31 +04:00
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while ( !eq(*s++, CharT(0)) )
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2000-03-24 00:09:27 +03:00
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++result;
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return result;
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}
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static
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const char_type*
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find( const char_type* s, size_t n, const char_type& c )
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{
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while ( n-- )
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{
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if ( eq(*s, c) )
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return s;
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++s;
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}
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return 0;
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}
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#if 0
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// I/O related:
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typedef streamoff off_type;
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typedef streampos pos_type;
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typedef mbstate_t state_type;
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static
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int_type
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eof()
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{
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return EOF;
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}
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static
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int_type
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not_eof( const int_type& c )
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{
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return eq_int_type(c, eof()) ? ~eof() : c;
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}
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// static state_type get_state( pos_type );
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#endif
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};
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NS_SPECIALIZE_TEMPLATE
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struct nsCharTraits<char>
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{
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2000-04-15 03:19:14 +04:00
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typedef char char_type;
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typedef PRUnichar incompatible_char_type;
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2000-03-24 00:09:27 +03:00
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static
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void
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assign( char& lhs, char rhs )
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{
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lhs = rhs;
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}
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// integer representation of characters:
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typedef int int_type;
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static
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char
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to_char_type( int c )
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{
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return char(c);
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}
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static
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int
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to_int_type( char c )
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{
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return int( NS_STATIC_CAST(unsigned char, c) );
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}
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static
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nsCharTraits_bool
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eq_int_type( int lhs, int rhs )
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{
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return lhs == rhs;
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}
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// |char_type| comparisons:
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static
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nsCharTraits_bool
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eq( char lhs, char rhs )
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{
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return lhs == rhs;
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}
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static
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nsCharTraits_bool
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lt( char lhs, char rhs )
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{
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return lhs < rhs;
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}
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// operations on s[n] arrays:
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static
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char*
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move( char* s1, const char* s2, size_t n )
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{
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return NS_STATIC_CAST(char*, memmove(s1, s2, n));
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}
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static
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char*
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copy( char* s1, const char* s2, size_t n )
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{
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return NS_STATIC_CAST(char*, memcpy(s1, s2, n));
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}
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static
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char*
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assign( char* s, size_t n, char c )
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{
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return NS_STATIC_CAST(char*, memset(s, to_int_type(c), n));
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}
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static
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int
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compare( const char* s1, const char* s2, size_t n )
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{
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return memcmp(s1, s2, n);
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}
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static
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size_t
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length( const char* s )
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{
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return strlen(s);
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}
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static
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const char*
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find( const char* s, size_t n, char c )
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{
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2000-05-20 23:08:36 +04:00
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return NS_REINTERPRET_CAST(const char*, memchr(s, to_int_type(c), n));
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2000-03-24 00:09:27 +03:00
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}
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#if 0
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// I/O related:
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typedef streamoff off_type;
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typedef streampos pos_type;
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typedef mbstate_t state_type;
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static
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int_type
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eof()
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{
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return EOF;
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}
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static
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int
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not_eof( int c )
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{
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return c==eof() ? ~eof() : c;
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}
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// static state_type get_state( pos_type );
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#endif
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};
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2000-03-24 01:42:34 +03:00
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#if 0
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2000-03-24 00:09:27 +03:00
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NS_SPECIALIZE_TEMPLATE
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struct nsCharTraits<wchar_t>
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{
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typedef wchar_t char_type;
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static
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void
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assign( wchar_t& lhs, wchar_t rhs )
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{
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lhs = rhs;
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}
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// integer representation of characters:
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typedef wint_t int_type;
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static
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wchar_t
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to_char_type( int_type c )
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{
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return wchar_t(c);
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}
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static
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int_type
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to_int_type( wchar_t c )
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{
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return int_type(c);
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}
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static
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nsCharTraits_bool
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eq_int_type( int_type lhs, int_type rhs )
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{
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return lhs == rhs;
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}
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// |char_type| comparisons:
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static
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nsCharTraits_bool
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eq( wchar_t lhs, wchar_t rhs )
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{
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return lhs == rhs;
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}
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static
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nsCharTraits_bool
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lt( wchar_t lhs, wchar_t rhs )
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{
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return lhs < rhs;
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}
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// operations on s[n] arrays:
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static
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wchar_t*
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move( wchar_t* s1, const wchar_t* s2, size_t n )
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{
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return NS_STATIC_CAST(wchar_t*, wmemmove(s1, s2, n));
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}
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static
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wchar_t*
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copy( wchar_t* s1, const wchar_t* s2, size_t n )
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{
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return NS_STATIC_CAST(wchar_t*, wmemcpy(s1, s2, n));
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}
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static
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wchar_t*
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assign( wchar_t* s, size_t n, wchar_t c )
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{
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return NS_STATIC_CAST(wchar_t*, wmemset(s, to_int_type(c), n));
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}
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static
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int
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compare( const wchar_t* s1, const wchar_t* s2, size_t n )
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{
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return wmemcmp(s1, s2, n);
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}
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static
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size_t
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length( const wchar_t* s )
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{
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return wcslen(s);
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}
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|
static
|
|
|
|
const wchar_t*
|
|
|
|
find( const wchar_t* s, size_t n, wchar_t c )
|
|
|
|
{
|
2000-05-20 23:08:36 +04:00
|
|
|
return NS_REINTERPRET_CAST(const wchar_t*, wmemchr(s, to_int_type(c), n));
|
2000-03-24 00:09:27 +03:00
|
|
|
}
|
|
|
|
|
|
|
|
#if 0
|
|
|
|
// I/O related:
|
|
|
|
|
|
|
|
typedef streamoff off_type;
|
|
|
|
typedef streampos pos_type;
|
|
|
|
typedef mbstate_t state_type;
|
|
|
|
|
|
|
|
static
|
|
|
|
int_type
|
|
|
|
eof()
|
|
|
|
{
|
|
|
|
return WEOF;
|
|
|
|
}
|
|
|
|
|
|
|
|
static
|
|
|
|
int_type
|
|
|
|
not_eof( int_type c )
|
|
|
|
{
|
|
|
|
return c==eof() ? ~eof() : c;
|
|
|
|
}
|
|
|
|
|
|
|
|
// static state_type get_state( pos_type );
|
|
|
|
#endif
|
|
|
|
};
|
2000-03-24 01:42:34 +03:00
|
|
|
#endif
|
2000-03-24 00:09:27 +03:00
|
|
|
|
2000-04-21 05:20:55 +04:00
|
|
|
|
|
|
|
template <class InputIterator>
|
|
|
|
struct nsCharSourceTraits
|
|
|
|
{
|
2000-05-14 00:17:35 +04:00
|
|
|
#if 0
|
|
|
|
static
|
|
|
|
PRUint32
|
|
|
|
distance( const InputIterator& first, const InputIterator& last )
|
|
|
|
{
|
|
|
|
// ...
|
|
|
|
}
|
|
|
|
#endif
|
|
|
|
|
2000-04-21 05:20:55 +04:00
|
|
|
static
|
|
|
|
PRUint32
|
2000-05-14 00:17:35 +04:00
|
|
|
readable_distance( const InputIterator& iter )
|
2000-04-21 05:20:55 +04:00
|
|
|
{
|
|
|
|
return iter.size_forward();
|
|
|
|
}
|
|
|
|
|
|
|
|
static
|
|
|
|
PRUint32
|
2000-05-14 00:17:35 +04:00
|
|
|
readable_distance( const InputIterator& first, const InputIterator& last )
|
2000-04-21 05:20:55 +04:00
|
|
|
{
|
2000-06-03 04:38:06 +04:00
|
|
|
return PRUint32(SameFragment(first, last) ? last.get()-first.get() : first.size_forward());
|
2000-04-21 05:20:55 +04:00
|
|
|
}
|
|
|
|
|
|
|
|
static
|
2000-04-23 09:54:36 +04:00
|
|
|
const typename InputIterator::value_type*
|
2000-04-21 05:20:55 +04:00
|
|
|
read( const InputIterator& iter )
|
|
|
|
{
|
2000-06-03 04:38:06 +04:00
|
|
|
return iter.get();
|
2000-04-21 05:20:55 +04:00
|
|
|
}
|
|
|
|
};
|
|
|
|
|
2000-04-26 04:55:37 +04:00
|
|
|
#ifdef HAVE_CPP_PARTIAL_SPECIALIZATION
|
|
|
|
|
2000-04-21 05:20:55 +04:00
|
|
|
template <class CharT>
|
|
|
|
struct nsCharSourceTraits<CharT*>
|
|
|
|
{
|
2000-05-14 00:17:35 +04:00
|
|
|
#if 0
|
|
|
|
static
|
|
|
|
PRUint32
|
|
|
|
distance( CharT* first, CharT* last )
|
|
|
|
{
|
|
|
|
return PRUint32(last-first);
|
|
|
|
}
|
|
|
|
#endif
|
|
|
|
|
2000-04-21 05:20:55 +04:00
|
|
|
static
|
|
|
|
PRUint32
|
2000-05-14 00:17:35 +04:00
|
|
|
readable_distance( CharT* s )
|
2000-04-21 05:20:55 +04:00
|
|
|
{
|
|
|
|
return PRUint32(nsCharTraits<CharT>::length(s));
|
|
|
|
// return numeric_limits<PRUint32>::max();
|
|
|
|
}
|
|
|
|
|
|
|
|
static
|
|
|
|
PRUint32
|
2000-05-14 00:17:35 +04:00
|
|
|
readable_distance( CharT* first, CharT* last )
|
2000-04-21 05:20:55 +04:00
|
|
|
{
|
|
|
|
return PRUint32(last-first);
|
|
|
|
}
|
|
|
|
|
|
|
|
static
|
|
|
|
const CharT*
|
|
|
|
read( CharT* s )
|
|
|
|
{
|
|
|
|
return s;
|
|
|
|
}
|
|
|
|
};
|
|
|
|
|
2000-04-26 04:55:37 +04:00
|
|
|
#else
|
|
|
|
|
|
|
|
NS_SPECIALIZE_TEMPLATE
|
|
|
|
struct nsCharSourceTraits<const char*>
|
|
|
|
{
|
2000-05-14 00:17:35 +04:00
|
|
|
#if 0
|
|
|
|
static
|
|
|
|
PRUint32
|
|
|
|
distance( const char* first, const char* last )
|
|
|
|
{
|
|
|
|
return PRUint32(last-first);
|
|
|
|
}
|
|
|
|
#endif
|
|
|
|
|
2000-04-26 04:55:37 +04:00
|
|
|
static
|
|
|
|
PRUint32
|
2000-05-14 00:17:35 +04:00
|
|
|
readable_distance( const char* s )
|
2000-04-26 04:55:37 +04:00
|
|
|
{
|
|
|
|
return PRUint32(nsCharTraits<char>::length(s));
|
|
|
|
// return numeric_limits<PRUint32>::max();
|
|
|
|
}
|
|
|
|
|
|
|
|
static
|
|
|
|
PRUint32
|
2000-05-14 00:17:35 +04:00
|
|
|
readable_distance( const char* first, const char* last )
|
2000-04-26 04:55:37 +04:00
|
|
|
{
|
|
|
|
return PRUint32(last-first);
|
|
|
|
}
|
|
|
|
|
|
|
|
static
|
|
|
|
const char*
|
|
|
|
read( const char* s )
|
|
|
|
{
|
|
|
|
return s;
|
|
|
|
}
|
|
|
|
};
|
|
|
|
|
|
|
|
// Add specialization for |PRUnichar| only if it is needed
|
|
|
|
|
|
|
|
#endif
|
2000-04-21 05:20:55 +04:00
|
|
|
|
|
|
|
|
|
|
|
template <class OutputIterator>
|
|
|
|
struct nsCharSinkTraits
|
|
|
|
{
|
|
|
|
static
|
|
|
|
PRUint32
|
2000-04-23 09:54:36 +04:00
|
|
|
write( OutputIterator& iter, const typename OutputIterator::value_type* s, PRUint32 n )
|
2000-04-21 05:20:55 +04:00
|
|
|
{
|
|
|
|
return iter.write(s, n);
|
|
|
|
}
|
|
|
|
};
|
|
|
|
|
2000-04-26 04:55:37 +04:00
|
|
|
#ifdef HAVE_CPP_PARTIAL_SPECIALIZATION
|
|
|
|
|
2000-04-21 05:20:55 +04:00
|
|
|
template <class CharT>
|
|
|
|
struct nsCharSinkTraits<CharT*>
|
|
|
|
{
|
|
|
|
static
|
|
|
|
PRUint32
|
|
|
|
write( CharT*& iter, const CharT* s, PRUint32 n )
|
|
|
|
{
|
|
|
|
nsCharTraits<CharT>::copy(iter, s, n);
|
|
|
|
iter += n;
|
|
|
|
return n;
|
|
|
|
}
|
|
|
|
};
|
|
|
|
|
2000-04-26 04:55:37 +04:00
|
|
|
#else
|
|
|
|
|
|
|
|
NS_SPECIALIZE_TEMPLATE
|
|
|
|
struct nsCharSinkTraits<char*>
|
|
|
|
{
|
|
|
|
static
|
|
|
|
PRUint32
|
|
|
|
write( char*& iter, const char* s, PRUint32 n )
|
|
|
|
{
|
|
|
|
nsCharTraits<char>::copy(iter, s, n);
|
|
|
|
iter += n;
|
|
|
|
return n;
|
|
|
|
}
|
|
|
|
};
|
|
|
|
|
|
|
|
NS_SPECIALIZE_TEMPLATE
|
|
|
|
struct nsCharSinkTraits<PRUnichar*>
|
|
|
|
{
|
|
|
|
static
|
|
|
|
PRUint32
|
|
|
|
write( PRUnichar*& iter, const PRUnichar* s, PRUint32 n )
|
|
|
|
{
|
|
|
|
nsCharTraits<PRUnichar>::copy(iter, s, n);
|
|
|
|
iter += n;
|
|
|
|
return n;
|
|
|
|
}
|
|
|
|
};
|
|
|
|
|
|
|
|
#endif
|
2000-04-21 05:20:55 +04:00
|
|
|
|
2000-05-21 00:43:26 +04:00
|
|
|
#endif // !defined(nsCharTraits_h___)
|