mirror of
https://github.com/mozilla/gecko-dev.git
synced 2024-11-08 20:47:44 +00:00
859 lines
20 KiB
C++
859 lines
20 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
|
|
/* ***** BEGIN LICENSE BLOCK *****
|
|
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
|
|
*
|
|
* The contents of this file are subject to the Mozilla 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/MPL/
|
|
*
|
|
* 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 the Initial Developer are Copyright (C) 2000
|
|
* the Initial Developer. All Rights Reserved.
|
|
*
|
|
* Contributor(s):
|
|
* Scott Collins <scc@mozilla.org> (original author)
|
|
*
|
|
* Alternatively, the contents of this file may be used under the terms of
|
|
* either of the GNU General Public License Version 2 or later (the "GPL"),
|
|
* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
|
|
* in which case the provisions of the GPL or the LGPL are applicable instead
|
|
* of those above. If you wish to allow use of your version of this file only
|
|
* under the terms of either the GPL or the LGPL, and not to allow others to
|
|
* use your version of this file under the terms of the MPL, indicate your
|
|
* decision by deleting the provisions above and replace them with the notice
|
|
* and other provisions required by the GPL or the LGPL. If you do not delete
|
|
* the provisions above, a recipient may use your version of this file under
|
|
* the terms of any one of the MPL, the GPL or the LGPL.
|
|
*
|
|
* ***** END LICENSE BLOCK ***** */
|
|
|
|
#ifndef nsCharTraits_h___
|
|
#define nsCharTraits_h___
|
|
|
|
#include <ctype.h>
|
|
// for |EOF|, |WEOF|
|
|
|
|
#define FORCED_CPP_2BYTE_WCHAR_T
|
|
// disable special optimizations for now through this hack
|
|
|
|
#if defined(HAVE_CPP_2BYTE_WCHAR_T) && !defined(FORCED_CPP_2BYTE_WCHAR_T)
|
|
#define USE_CPP_WCHAR_FUNCS
|
|
#endif
|
|
|
|
#ifdef USE_CPP_WCHAR_FUNCS
|
|
#include <wchar.h>
|
|
// for |wmemset|, et al
|
|
#endif
|
|
|
|
#include <string.h>
|
|
// for |memcpy|, et al
|
|
|
|
#ifndef nscore_h___
|
|
#include "nscore.h"
|
|
// for |PRUnichar|
|
|
#endif
|
|
|
|
// This file may be used (through nsUTF8Utils.h) from non-XPCOM code, in
|
|
// particular the standalone software updater. In that case stub out
|
|
// the macros provided by nsDebug.h which are only usable when linking XPCOM
|
|
|
|
#ifdef NS_NO_XPCOM
|
|
#define NS_WARNING(msg)
|
|
#define NS_ASSERTION(cond, msg)
|
|
#define NS_ERROR(msg)
|
|
#else
|
|
#ifndef nsDebug_h__
|
|
#include "nsDebug.h"
|
|
// for NS_ASSERTION
|
|
#endif
|
|
#endif
|
|
|
|
#ifdef HAVE_CPP_BOOL
|
|
typedef bool nsCharTraits_bool;
|
|
#else
|
|
typedef PRBool nsCharTraits_bool;
|
|
#endif
|
|
|
|
/*
|
|
* Some macros for converting PRUnichar (UTF-16) to and from Unicode scalar
|
|
* values.
|
|
*
|
|
* Note that UTF-16 represents all Unicode scalar values up to U+10FFFF by
|
|
* using "surrogate pairs". These consist of a high surrogate, i.e. a code
|
|
* point in the range U+D800 - U+DBFF, and a low surrogate, i.e. a code point
|
|
* in the range U+DC00 - U+DFFF, like this:
|
|
*
|
|
* U+D800 U+DC00 = U+10000
|
|
* U+D800 U+DC01 = U+10001
|
|
* ...
|
|
* U+DBFF U+DFFE = U+10FFFE
|
|
* U+DBFF U+DFFF = U+10FFFF
|
|
*
|
|
* These surrogate code points U+D800 - U+DFFF are not themselves valid Unicode
|
|
* scalar values and are not well-formed UTF-16 except as high-surrogate /
|
|
* low-surrogate pairs.
|
|
*/
|
|
|
|
#define PLANE1_BASE PRUint32(0x00010000)
|
|
// High surrogates are in the range 0xD800 -- OxDBFF
|
|
#define NS_IS_HIGH_SURROGATE(u) ((PRUint32(u) & 0xFFFFFC00) == 0xD800)
|
|
// Low surrogates are in the range 0xDC00 -- 0xDFFF
|
|
#define NS_IS_LOW_SURROGATE(u) ((PRUint32(u) & 0xFFFFFC00) == 0xDC00)
|
|
// Faster than testing NS_IS_HIGH_SURROGATE || NS_IS_LOW_SURROGATE
|
|
#define IS_SURROGATE(u) ((PRUint32(u) & 0xFFFFF800) == 0xD800)
|
|
|
|
// Everything else is not a surrogate: 0x000 -- 0xD7FF, 0xE000 -- 0xFFFF
|
|
|
|
// N = (H - 0xD800) * 0x400 + 0x10000 + (L - 0xDC00)
|
|
// I wonder whether we could somehow assert that H is a high surrogate
|
|
// and L is a low surrogate
|
|
#define SURROGATE_TO_UCS4(h, l) (((PRUint32(h) & 0x03FF) << 10) + \
|
|
(PRUint32(l) & 0x03FF) + PLANE1_BASE)
|
|
|
|
// Extract surrogates from a UCS4 char
|
|
// Reference: the Unicode standard 4.0, section 3.9
|
|
// Since (c - 0x10000) >> 10 == (c >> 10) - 0x0080 and
|
|
// 0xD7C0 == 0xD800 - 0x0080,
|
|
// ((c - 0x10000) >> 10) + 0xD800 can be simplified to
|
|
#define H_SURROGATE(c) PRUnichar(PRUnichar(PRUint32(c) >> 10) + \
|
|
PRUnichar(0xD7C0))
|
|
// where it's to be noted that 0xD7C0 is not bitwise-OR'd
|
|
// but added.
|
|
|
|
// Since 0x10000 & 0x03FF == 0,
|
|
// (c - 0x10000) & 0x03FF == c & 0x03FF so that
|
|
// ((c - 0x10000) & 0x03FF) | 0xDC00 is equivalent to
|
|
#define L_SURROGATE(c) PRUnichar(PRUnichar(PRUint32(c) & PRUint32(0x03FF)) | \
|
|
PRUnichar(0xDC00))
|
|
|
|
#define IS_IN_BMP(ucs) (PRUint32(ucs) < PLANE1_BASE)
|
|
#define UCS2_REPLACEMENT_CHAR PRUnichar(0xFFFD)
|
|
|
|
#define UCS_END PRUint32(0x00110000)
|
|
#define IS_VALID_CHAR(c) ((PRUint32(c) < UCS_END) && !IS_SURROGATE(c))
|
|
#define ENSURE_VALID_CHAR(c) (IS_VALID_CHAR(c) ? (c) : UCS2_REPLACEMENT_CHAR)
|
|
|
|
template <class CharT> struct nsCharTraits {};
|
|
|
|
NS_SPECIALIZE_TEMPLATE
|
|
struct nsCharTraits<PRUnichar>
|
|
{
|
|
typedef PRUnichar char_type;
|
|
typedef PRUint16 unsigned_char_type;
|
|
typedef char incompatible_char_type;
|
|
|
|
NS_COM static char_type *sEmptyBuffer;
|
|
|
|
static
|
|
void
|
|
assign( char_type& lhs, char_type rhs )
|
|
{
|
|
lhs = rhs;
|
|
}
|
|
|
|
|
|
// integer representation of characters:
|
|
|
|
#ifdef USE_CPP_WCHAR_FUNCS
|
|
typedef wint_t int_type;
|
|
#else
|
|
typedef int int_type;
|
|
#endif
|
|
|
|
static
|
|
char_type
|
|
to_char_type( int_type c )
|
|
{
|
|
return char_type(c);
|
|
}
|
|
|
|
static
|
|
int_type
|
|
to_int_type( char_type c )
|
|
{
|
|
return int_type( static_cast<unsigned_char_type>(c) );
|
|
}
|
|
|
|
static
|
|
nsCharTraits_bool
|
|
eq_int_type( int_type lhs, int_type rhs )
|
|
{
|
|
return lhs == rhs;
|
|
}
|
|
|
|
|
|
// |char_type| comparisons:
|
|
|
|
static
|
|
nsCharTraits_bool
|
|
eq( char_type lhs, char_type rhs )
|
|
{
|
|
return lhs == rhs;
|
|
}
|
|
|
|
static
|
|
nsCharTraits_bool
|
|
lt( char_type lhs, char_type rhs )
|
|
{
|
|
return lhs < rhs;
|
|
}
|
|
|
|
|
|
// operations on s[n] arrays:
|
|
|
|
static
|
|
char_type*
|
|
move( char_type* s1, const char_type* s2, size_t n )
|
|
{
|
|
return static_cast<char_type*>(memmove(s1, s2, n * sizeof(char_type)));
|
|
}
|
|
|
|
static
|
|
char_type*
|
|
copy( char_type* s1, const char_type* s2, size_t n )
|
|
{
|
|
return static_cast<char_type*>(memcpy(s1, s2, n * sizeof(char_type)));
|
|
}
|
|
|
|
static
|
|
char_type*
|
|
copyASCII( char_type* s1, const char* s2, size_t n )
|
|
{
|
|
for (char_type* s = s1; n--; ++s, ++s2) {
|
|
NS_ASSERTION(!(*s2 & ~0x7F), "Unexpected non-ASCII character");
|
|
*s = *s2;
|
|
}
|
|
return s1;
|
|
}
|
|
|
|
static
|
|
char_type*
|
|
assign( char_type* s, size_t n, char_type c )
|
|
{
|
|
#ifdef USE_CPP_WCHAR_FUNCS
|
|
return static_cast<char_type*>(wmemset(s, to_int_type(c), n));
|
|
#else
|
|
char_type* result = s;
|
|
while ( n-- )
|
|
assign(*s++, c);
|
|
return result;
|
|
#endif
|
|
}
|
|
|
|
static
|
|
int
|
|
compare( const char_type* s1, const char_type* s2, size_t n )
|
|
{
|
|
#ifdef USE_CPP_WCHAR_FUNCS
|
|
return wmemcmp(s1, s2, n);
|
|
#else
|
|
for ( ; n--; ++s1, ++s2 )
|
|
{
|
|
if ( !eq(*s1, *s2) )
|
|
return to_int_type(*s1) - to_int_type(*s2);
|
|
}
|
|
|
|
return 0;
|
|
#endif
|
|
}
|
|
|
|
static
|
|
int
|
|
compareASCII( const char_type* s1, const char* s2, size_t n )
|
|
{
|
|
for ( ; n--; ++s1, ++s2 )
|
|
{
|
|
NS_ASSERTION(!(*s2 & ~0x7F), "Unexpected non-ASCII character");
|
|
if ( !eq_int_type(to_int_type(*s1), to_int_type(*s2)) )
|
|
return to_int_type(*s1) - to_int_type(*s2);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
// this version assumes that s2 is null-terminated and s1 has length n.
|
|
// if s1 is shorter than s2 then we return -1; if s1 is longer than s2,
|
|
// we return 1.
|
|
static
|
|
int
|
|
compareASCIINullTerminated( const char_type* s1, size_t n, const char* s2 )
|
|
{
|
|
for ( ; n--; ++s1, ++s2 )
|
|
{
|
|
if ( !*s2 )
|
|
return 1;
|
|
NS_ASSERTION(!(*s2 & ~0x7F), "Unexpected non-ASCII character");
|
|
if ( !eq_int_type(to_int_type(*s1), to_int_type(*s2)) )
|
|
return to_int_type(*s1) - to_int_type(*s2);
|
|
}
|
|
|
|
if ( *s2 )
|
|
return -1;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* Convert c to its lower-case form, but only if the lower-case form is
|
|
* ASCII. Otherwise leave it alone.
|
|
*
|
|
* There are only two non-ASCII Unicode characters whose lowercase
|
|
* equivalents are ASCII: KELVIN SIGN and LATIN CAPITAL LETTER I WITH
|
|
* DOT ABOVE. So it's a simple matter to handle those explicitly.
|
|
*/
|
|
static
|
|
char_type
|
|
ASCIIToLower( char_type c )
|
|
{
|
|
if (c < 0x100)
|
|
{
|
|
if (c >= 'A' && c <= 'Z')
|
|
return char_type(c + ('a' - 'A'));
|
|
|
|
return c;
|
|
}
|
|
else
|
|
{
|
|
if (c == 0x212A) // KELVIN SIGN
|
|
return 'k';
|
|
if (c == 0x0130) // LATIN CAPITAL LETTER I WITH DOT ABOVE
|
|
return 'i';
|
|
return c;
|
|
}
|
|
}
|
|
|
|
static
|
|
int
|
|
compareLowerCaseToASCII( const char_type* s1, const char* s2, size_t n )
|
|
{
|
|
for ( ; n--; ++s1, ++s2 )
|
|
{
|
|
NS_ASSERTION(!(*s2 & ~0x7F), "Unexpected non-ASCII character");
|
|
NS_ASSERTION(!(*s2 >= 'A' && *s2 <= 'Z'),
|
|
"Unexpected uppercase character");
|
|
char_type lower_s1 = ASCIIToLower(*s1);
|
|
if ( lower_s1 != to_char_type(*s2) )
|
|
return to_int_type(lower_s1) - to_int_type(*s2);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
// this version assumes that s2 is null-terminated and s1 has length n.
|
|
// if s1 is shorter than s2 then we return -1; if s1 is longer than s2,
|
|
// we return 1.
|
|
static
|
|
int
|
|
compareLowerCaseToASCIINullTerminated( const char_type* s1, size_t n, const char* s2 )
|
|
{
|
|
for ( ; n--; ++s1, ++s2 )
|
|
{
|
|
if ( !*s2 )
|
|
return 1;
|
|
NS_ASSERTION(!(*s2 & ~0x7F), "Unexpected non-ASCII character");
|
|
NS_ASSERTION(!(*s2 >= 'A' && *s2 <= 'Z'),
|
|
"Unexpected uppercase character");
|
|
char_type lower_s1 = ASCIIToLower(*s1);
|
|
if ( lower_s1 != to_char_type(*s2) )
|
|
return to_int_type(lower_s1) - to_int_type(*s2);
|
|
}
|
|
|
|
if ( *s2 )
|
|
return -1;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static
|
|
size_t
|
|
length( const char_type* s )
|
|
{
|
|
#ifdef USE_CPP_WCHAR_FUNCS
|
|
return wcslen(s);
|
|
#else
|
|
size_t result = 0;
|
|
while ( !eq(*s++, char_type(0)) )
|
|
++result;
|
|
return result;
|
|
#endif
|
|
}
|
|
|
|
static
|
|
const char_type*
|
|
find( const char_type* s, size_t n, char_type c )
|
|
{
|
|
#ifdef USE_CPP_WCHAR_FUNCS
|
|
return reinterpret_cast<const char_type*>(wmemchr(s, to_int_type(c), n));
|
|
#else
|
|
while ( n-- )
|
|
{
|
|
if ( eq(*s, c) )
|
|
return s;
|
|
++s;
|
|
}
|
|
|
|
return 0;
|
|
#endif
|
|
}
|
|
|
|
#if 0
|
|
// I/O related:
|
|
|
|
typedef streamoff off_type;
|
|
typedef streampos pos_type;
|
|
typedef mbstate_t state_type;
|
|
|
|
static
|
|
int_type
|
|
eof()
|
|
{
|
|
#ifdef USE_CPP_WCHAR_FUNCS
|
|
return WEOF;
|
|
#else
|
|
return EOF;
|
|
#endif
|
|
}
|
|
|
|
static
|
|
int_type
|
|
not_eof( int_type c )
|
|
{
|
|
return eq_int_type(c, eof()) ? ~eof() : c;
|
|
}
|
|
|
|
// static state_type get_state( pos_type );
|
|
#endif
|
|
};
|
|
|
|
NS_SPECIALIZE_TEMPLATE
|
|
struct nsCharTraits<char>
|
|
{
|
|
typedef char char_type;
|
|
typedef unsigned char unsigned_char_type;
|
|
typedef PRUnichar incompatible_char_type;
|
|
|
|
NS_COM static char_type *sEmptyBuffer;
|
|
|
|
static
|
|
void
|
|
assign( char_type& lhs, char_type rhs )
|
|
{
|
|
lhs = rhs;
|
|
}
|
|
|
|
|
|
// integer representation of characters:
|
|
|
|
typedef int int_type;
|
|
|
|
static
|
|
char_type
|
|
to_char_type( int_type c )
|
|
{
|
|
return char_type(c);
|
|
}
|
|
|
|
static
|
|
int_type
|
|
to_int_type( char_type c )
|
|
{
|
|
return int_type( static_cast<unsigned_char_type>(c) );
|
|
}
|
|
|
|
static
|
|
nsCharTraits_bool
|
|
eq_int_type( int_type lhs, int_type rhs )
|
|
{
|
|
return lhs == rhs;
|
|
}
|
|
|
|
|
|
// |char_type| comparisons:
|
|
|
|
static
|
|
nsCharTraits_bool
|
|
eq( char_type lhs, char_type rhs )
|
|
{
|
|
return lhs == rhs;
|
|
}
|
|
|
|
static
|
|
nsCharTraits_bool
|
|
lt( char_type lhs, char_type rhs )
|
|
{
|
|
return lhs < rhs;
|
|
}
|
|
|
|
|
|
// operations on s[n] arrays:
|
|
|
|
static
|
|
char_type*
|
|
move( char_type* s1, const char_type* s2, size_t n )
|
|
{
|
|
return static_cast<char_type*>(memmove(s1, s2, n * sizeof(char_type)));
|
|
}
|
|
|
|
static
|
|
char_type*
|
|
copy( char_type* s1, const char_type* s2, size_t n )
|
|
{
|
|
return static_cast<char_type*>(memcpy(s1, s2, n * sizeof(char_type)));
|
|
}
|
|
|
|
static
|
|
char_type*
|
|
copyASCII( char_type* s1, const char* s2, size_t n )
|
|
{
|
|
return copy(s1, s2, n);
|
|
}
|
|
|
|
static
|
|
char_type*
|
|
assign( char_type* s, size_t n, char_type c )
|
|
{
|
|
return static_cast<char_type*>(memset(s, to_int_type(c), n));
|
|
}
|
|
|
|
static
|
|
int
|
|
compare( const char_type* s1, const char_type* s2, size_t n )
|
|
{
|
|
return memcmp(s1, s2, n);
|
|
}
|
|
|
|
static
|
|
int
|
|
compareASCII( const char_type* s1, const char* s2, size_t n )
|
|
{
|
|
#ifdef DEBUG
|
|
for (size_t i = 0; i < n; ++i)
|
|
{
|
|
NS_ASSERTION(!(s2[i] & ~0x7F), "Unexpected non-ASCII character");
|
|
}
|
|
#endif
|
|
return compare(s1, s2, n);
|
|
}
|
|
|
|
// this version assumes that s2 is null-terminated and s1 has length n.
|
|
// if s1 is shorter than s2 then we return -1; if s1 is longer than s2,
|
|
// we return 1.
|
|
static
|
|
int
|
|
compareASCIINullTerminated( const char_type* s1, size_t n, const char* s2 )
|
|
{
|
|
// can't use strcmp here because we don't want to stop when s1
|
|
// contains a null
|
|
for ( ; n--; ++s1, ++s2 )
|
|
{
|
|
if ( !*s2 )
|
|
return 1;
|
|
NS_ASSERTION(!(*s2 & ~0x7F), "Unexpected non-ASCII character");
|
|
if ( *s1 != *s2 )
|
|
return to_int_type(*s1) - to_int_type(*s2);
|
|
}
|
|
|
|
if ( *s2 )
|
|
return -1;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* Convert c to its lower-case form, but only if c is ASCII.
|
|
*/
|
|
static
|
|
char_type
|
|
ASCIIToLower( char_type c )
|
|
{
|
|
if (c >= 'A' && c <= 'Z')
|
|
return char_type(c + ('a' - 'A'));
|
|
|
|
return c;
|
|
}
|
|
|
|
static
|
|
int
|
|
compareLowerCaseToASCII( const char_type* s1, const char* s2, size_t n )
|
|
{
|
|
for ( ; n--; ++s1, ++s2 )
|
|
{
|
|
NS_ASSERTION(!(*s2 & ~0x7F), "Unexpected non-ASCII character");
|
|
NS_ASSERTION(!(*s2 >= 'A' && *s2 <= 'Z'),
|
|
"Unexpected uppercase character");
|
|
char_type lower_s1 = ASCIIToLower(*s1);
|
|
if ( lower_s1 != *s2 )
|
|
return to_int_type(lower_s1) - to_int_type(*s2);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
// this version assumes that s2 is null-terminated and s1 has length n.
|
|
// if s1 is shorter than s2 then we return -1; if s1 is longer than s2,
|
|
// we return 1.
|
|
static
|
|
int
|
|
compareLowerCaseToASCIINullTerminated( const char_type* s1, size_t n, const char* s2 )
|
|
{
|
|
for ( ; n--; ++s1, ++s2 )
|
|
{
|
|
if ( !*s2 )
|
|
return 1;
|
|
NS_ASSERTION(!(*s2 & ~0x7F), "Unexpected non-ASCII character");
|
|
NS_ASSERTION(!(*s2 >= 'A' && *s2 <= 'Z'),
|
|
"Unexpected uppercase character");
|
|
char_type lower_s1 = ASCIIToLower(*s1);
|
|
if ( lower_s1 != *s2 )
|
|
return to_int_type(lower_s1) - to_int_type(*s2);
|
|
}
|
|
|
|
if ( *s2 )
|
|
return -1;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static
|
|
size_t
|
|
length( const char_type* s )
|
|
{
|
|
return strlen(s);
|
|
}
|
|
|
|
static
|
|
const char_type*
|
|
find( const char_type* s, size_t n, char_type c )
|
|
{
|
|
return reinterpret_cast<const char_type*>(memchr(s, to_int_type(c), n));
|
|
}
|
|
|
|
#if 0
|
|
// I/O related:
|
|
|
|
typedef streamoff off_type;
|
|
typedef streampos pos_type;
|
|
typedef mbstate_t state_type;
|
|
|
|
static
|
|
int_type
|
|
eof()
|
|
{
|
|
return EOF;
|
|
}
|
|
|
|
static
|
|
int_type
|
|
not_eof( int_type c )
|
|
{
|
|
return eq_int_type(c, eof()) ? ~eof() : c;
|
|
}
|
|
|
|
// static state_type get_state( pos_type );
|
|
#endif
|
|
};
|
|
|
|
template <class InputIterator>
|
|
struct nsCharSourceTraits
|
|
{
|
|
typedef typename InputIterator::difference_type difference_type;
|
|
|
|
static
|
|
PRUint32
|
|
readable_distance( const InputIterator& first, const InputIterator& last )
|
|
{
|
|
// assumes single fragment
|
|
return PRUint32(last.get() - first.get());
|
|
}
|
|
|
|
static
|
|
const typename InputIterator::value_type*
|
|
read( const InputIterator& iter )
|
|
{
|
|
return iter.get();
|
|
}
|
|
|
|
static
|
|
void
|
|
advance( InputIterator& s, difference_type n )
|
|
{
|
|
s.advance(n);
|
|
}
|
|
};
|
|
|
|
#ifdef HAVE_CPP_PARTIAL_SPECIALIZATION
|
|
|
|
template <class CharT>
|
|
struct nsCharSourceTraits<CharT*>
|
|
{
|
|
typedef ptrdiff_t difference_type;
|
|
|
|
static
|
|
PRUint32
|
|
readable_distance( CharT* s )
|
|
{
|
|
return PRUint32(nsCharTraits<CharT>::length(s));
|
|
// return numeric_limits<PRUint32>::max();
|
|
}
|
|
|
|
static
|
|
PRUint32
|
|
readable_distance( CharT* first, CharT* last )
|
|
{
|
|
return PRUint32(last-first);
|
|
}
|
|
|
|
static
|
|
const CharT*
|
|
read( CharT* s )
|
|
{
|
|
return s;
|
|
}
|
|
|
|
static
|
|
void
|
|
advance( CharT*& s, difference_type n )
|
|
{
|
|
s += n;
|
|
}
|
|
};
|
|
|
|
#else
|
|
|
|
NS_SPECIALIZE_TEMPLATE
|
|
struct nsCharSourceTraits<const char*>
|
|
{
|
|
typedef ptrdiff_t difference_type;
|
|
|
|
static
|
|
PRUint32
|
|
readable_distance( const char* s )
|
|
{
|
|
return PRUint32(nsCharTraits<char>::length(s));
|
|
// return numeric_limits<PRUint32>::max();
|
|
}
|
|
|
|
static
|
|
PRUint32
|
|
readable_distance( const char* first, const char* last )
|
|
{
|
|
return PRUint32(last-first);
|
|
}
|
|
|
|
static
|
|
const char*
|
|
read( const char* s )
|
|
{
|
|
return s;
|
|
}
|
|
|
|
static
|
|
void
|
|
advance( const char*& s, difference_type n )
|
|
{
|
|
s += n;
|
|
}
|
|
};
|
|
|
|
|
|
NS_SPECIALIZE_TEMPLATE
|
|
struct nsCharSourceTraits<const PRUnichar*>
|
|
{
|
|
typedef ptrdiff_t difference_type;
|
|
|
|
static
|
|
PRUint32
|
|
readable_distance( const PRUnichar* s )
|
|
{
|
|
return PRUint32(nsCharTraits<PRUnichar>::length(s));
|
|
// return numeric_limits<PRUint32>::max();
|
|
}
|
|
|
|
static
|
|
PRUint32
|
|
readable_distance( const PRUnichar* first, const PRUnichar* last )
|
|
{
|
|
return PRUint32(last-first);
|
|
}
|
|
|
|
static
|
|
const PRUnichar*
|
|
read( const PRUnichar* s )
|
|
{
|
|
return s;
|
|
}
|
|
|
|
static
|
|
void
|
|
advance( const PRUnichar*& s, difference_type n )
|
|
{
|
|
s += n;
|
|
}
|
|
};
|
|
|
|
#endif
|
|
|
|
|
|
template <class OutputIterator>
|
|
struct nsCharSinkTraits
|
|
{
|
|
static
|
|
void
|
|
write( OutputIterator& iter, const typename OutputIterator::value_type* s, PRUint32 n )
|
|
{
|
|
iter.write(s, n);
|
|
}
|
|
};
|
|
|
|
#ifdef HAVE_CPP_PARTIAL_SPECIALIZATION
|
|
|
|
template <class CharT>
|
|
struct nsCharSinkTraits<CharT*>
|
|
{
|
|
static
|
|
void
|
|
write( CharT*& iter, const CharT* s, PRUint32 n )
|
|
{
|
|
nsCharTraits<CharT>::move(iter, s, n);
|
|
iter += n;
|
|
}
|
|
};
|
|
|
|
#else
|
|
|
|
NS_SPECIALIZE_TEMPLATE
|
|
struct nsCharSinkTraits<char*>
|
|
{
|
|
static
|
|
void
|
|
write( char*& iter, const char* s, PRUint32 n )
|
|
{
|
|
nsCharTraits<char>::move(iter, s, n);
|
|
iter += n;
|
|
}
|
|
};
|
|
|
|
NS_SPECIALIZE_TEMPLATE
|
|
struct nsCharSinkTraits<PRUnichar*>
|
|
{
|
|
static
|
|
void
|
|
write( PRUnichar*& iter, const PRUnichar* s, PRUint32 n )
|
|
{
|
|
nsCharTraits<PRUnichar>::move(iter, s, n);
|
|
iter += n;
|
|
}
|
|
};
|
|
|
|
#endif
|
|
|
|
#endif // !defined(nsCharTraits_h___)
|