зеркало из https://github.com/mozilla/gecko-dev.git
202 строки
6.1 KiB
C++
202 строки
6.1 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
|
|
/* ***** BEGIN LICENSE BLOCK *****
|
|
* Version: NPL 1.1/GPL 2.0/LGPL 2.1
|
|
*
|
|
* 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 the Initial Developer are Copyright (C) 1998
|
|
* the Initial Developer. All Rights Reserved.
|
|
*
|
|
* Contributor(s):
|
|
* Sean Su <ssu@netscape.com>
|
|
* Revision checked in on 01/03/30 by ssu@netscape.com, derived from:
|
|
* mozilla/xpcom/io/nsEscape.h
|
|
* mozilla/xpcom/io/nsEscape.cpp
|
|
*
|
|
* Alternatively, the contents of this file may be used under the terms of
|
|
* either 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 NPL, 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 NPL, the GPL or the LGPL.
|
|
*
|
|
* ***** END LICENSE BLOCK ***** */
|
|
|
|
#ifdef __cplusplus
|
|
extern "C"
|
|
{
|
|
#endif /* __cplusplus */
|
|
|
|
#include "extern.h"
|
|
#include "extra.h"
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif /* __cplusplus */
|
|
|
|
#include "nsEscape.h"
|
|
|
|
typedef int PRInt32;
|
|
|
|
const int netCharType[256] =
|
|
/* Bit 0 xalpha -- the alphas
|
|
** Bit 1 xpalpha -- as xalpha but
|
|
** converts spaces to plus and plus to %20
|
|
** Bit 3 ... path -- as xalphas but doesn't escape '/'
|
|
*/
|
|
/* 0 1 2 3 4 5 6 7 8 9 A B C D E F */
|
|
{ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 0x */
|
|
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 1x */
|
|
0,0,0,0,0,0,0,0,0,0,7,4,0,7,7,4, /* 2x !"#$%&'()*+,-./ */
|
|
7,7,7,7,7,7,7,7,7,7,0,0,0,7,0,0, /* 3x 0123456789:;<=>? */
|
|
0,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7, /* 4x @ABCDEFGHIJKLMNO */
|
|
/* bits for '@' changed from 7 to 0 so '@' can be escaped */
|
|
/* in usernames and passwords in publishing. */
|
|
7,7,7,7,7,7,7,7,7,7,7,0,0,0,0,7, /* 5X PQRSTUVWXYZ[\]^_ */
|
|
0,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7, /* 6x `abcdefghijklmno */
|
|
7,7,7,7,7,7,7,7,7,7,7,0,0,0,0,0, /* 7X pqrstuvwxyz{\}~ DEL */
|
|
0, };
|
|
|
|
/* decode % escaped hex codes into character values
|
|
*/
|
|
#define UNHEX(C) \
|
|
((C >= '0' && C <= '9') ? C - '0' : \
|
|
((C >= 'A' && C <= 'F') ? C - 'A' + 10 : \
|
|
((C >= 'a' && C <= 'f') ? C - 'a' + 10 : 0)))
|
|
|
|
|
|
#define IS_OK(C) (netCharType[((unsigned int) (C))] & (mask))
|
|
#define HEX_ESCAPE '%'
|
|
|
|
//----------------------------------------------------------------------------------------
|
|
NS_COM char* nsEscape(const char * str, nsEscapeMask mask)
|
|
//----------------------------------------------------------------------------------------
|
|
{
|
|
if(!str)
|
|
return NULL;
|
|
return nsEscapeCount(str, lstrlen(str), mask, NULL);
|
|
}
|
|
|
|
//----------------------------------------------------------------------------------------
|
|
NS_COM char* nsEscapeCount(
|
|
const char * str,
|
|
PRInt32 len,
|
|
nsEscapeMask mask,
|
|
PRInt32* out_len)
|
|
//----------------------------------------------------------------------------------------
|
|
{
|
|
if (!str)
|
|
return 0;
|
|
|
|
int i, extra = 0;
|
|
char* hexChars = "0123456789ABCDEF";
|
|
|
|
register const unsigned char* src = (const unsigned char *) str;
|
|
for (i = 0; i < len; i++)
|
|
{
|
|
if (!IS_OK(*src++))
|
|
extra += 2; /* the escape, plus an extra byte for each nibble */
|
|
}
|
|
|
|
char* result = (char *)NS_GlobalAlloc(len + extra + 1);
|
|
if (!result)
|
|
return 0;
|
|
|
|
register unsigned char* dst = (unsigned char *) result;
|
|
src = (const unsigned char *) str;
|
|
if (mask == url_XPAlphas)
|
|
{
|
|
for (i = 0; i < len; i++)
|
|
{
|
|
unsigned char c = *src++;
|
|
if (IS_OK(c))
|
|
*dst++ = c;
|
|
else if (c == ' ')
|
|
*dst++ = '+'; /* convert spaces to pluses */
|
|
else
|
|
{
|
|
*dst++ = HEX_ESCAPE;
|
|
*dst++ = hexChars[c >> 4]; /* high nibble */
|
|
*dst++ = hexChars[c & 0x0f]; /* low nibble */
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
for (i = 0; i < len; i++)
|
|
{
|
|
unsigned char c = *src++;
|
|
if (IS_OK(c))
|
|
*dst++ = c;
|
|
else
|
|
{
|
|
*dst++ = HEX_ESCAPE;
|
|
*dst++ = hexChars[c >> 4]; /* high nibble */
|
|
*dst++ = hexChars[c & 0x0f]; /* low nibble */
|
|
}
|
|
}
|
|
}
|
|
|
|
*dst = '\0'; /* tack on eos */
|
|
if(out_len)
|
|
*out_len = dst - (unsigned char *) result;
|
|
return result;
|
|
}
|
|
|
|
//----------------------------------------------------------------------------------------
|
|
NS_COM char* nsUnescape(char * str)
|
|
//----------------------------------------------------------------------------------------
|
|
{
|
|
nsUnescapeCount(str);
|
|
return str;
|
|
}
|
|
|
|
//----------------------------------------------------------------------------------------
|
|
NS_COM PRInt32 nsUnescapeCount(char * str)
|
|
//----------------------------------------------------------------------------------------
|
|
{
|
|
register char *src = str;
|
|
register char *dst = str;
|
|
|
|
while (*src)
|
|
if (*src != HEX_ESCAPE)
|
|
*dst++ = *src++;
|
|
else
|
|
{
|
|
src++; /* walk over escape */
|
|
if (*src)
|
|
{
|
|
*dst = UNHEX(*src) << 4;
|
|
src++;
|
|
}
|
|
if (*src)
|
|
{
|
|
*dst = (*dst + UNHEX(*src));
|
|
src++;
|
|
}
|
|
dst++;
|
|
}
|
|
|
|
*dst = 0;
|
|
return (int)(dst - str);
|
|
|
|
} /* NET_UnEscapeCnt */
|
|
|