/* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*-
*
* The contents of this file are subject to the Netscape Public License
* Version 1.0 (the "NPL"); you may not use this file except in
* compliance with the NPL. You may obtain a copy of the NPL at
* http://www.mozilla.org/NPL/
*
* Software distributed under the NPL is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
* for the specific language governing rights and limitations under the
* NPL.
*
* The Initial Developer of this code under the NPL is Netscape
* Communications Corporation. Portions created by Netscape are
* Copyright (C) 1998 Netscape Communications Corporation. All Rights
* Reserved.
*/
/* metatag.c */
#include "intlpriv.h"
#include "xp.h"
#include "libi18n.h"
/*
This function return csid if it finds Meta charset info
Currently there are two way to specify Meta charset
1.
2.
Right now, it scans for charset
*/
MODULE_PRIVATE int PeekMetaCharsetTag(char *pSrc, int len)
{
char *p;
char charset[MAX_CSNAME+1];
int i, k;
int n;
char ch;
for (i = 0; i < len; i++, pSrc++)
{
if (*pSrc != '<')
continue;
pSrc ++ ;
i ++ ;
if ((i+13) > len) /* at least need more than 13 bytes */
break;
switch (*pSrc) {
case 'm':
case 'M':
if (strncasecomp(pSrc, "meta", 4) == 0)
{
pSrc = pSrc + 4;
i += 4;
n = len - i; /* set n here to make sure it won't go
out of block boundary */
for (p = pSrc; n > 0; p ++, n--)
{
if (*p == '>' || *p == '<')
break ;
if (n < 9)
{
n = 0;
break;
}
if ((n > 9) && (*p == 'c' || *p == 'C') && strncasecomp(p, "charset", 7) == 0)
{
p += 7;
n -= 7;
while ((n > 0) && (*p == ' ' || *p == '\t')) /* skip spaces */
{
p ++ ;
n --;
}
if (n <= 0 || *p != '=')
break;
p ++;
n --;
while ((n > 0) && (*p == ' ' || *p == '\t')) /* skip spaces */
{
n --;
p ++ ;
}
if (n <= 0)
break;
/* now we go to find real charset name and convert it to csid */
if (*p == '\"' || *p == '\'')
{
p ++ ;
n -- ;
for (k = 0; n > 0 && k < MAX_CSNAME && *p != '\'' && *p != '\"'; p++, k++, n--)
charset[k] = *p ;
charset[k] = '\0';
}
else
{
for (k = 0; n > 0 && k < MAX_CSNAME && *p != '\'' && *p != '\"' && *p != '>'; p++, k++, n--)
charset[k] = *p ;
charset[k] = '\0';
}
if (*charset && (n >= 0)) /* ftang : change from if (*charset && (n > 0)) */
{
int16 doc_csid = INTL_CharSetNameToID(charset);
if (doc_csid == CS_UNKNOWN)
{
doc_csid = CS_DEFAULT;
}
return doc_csid;
}
}
}
if (n == 0) /* no more data left */
return 0;
}
break;
case 'b':
case 'B': /* quit if we see tag */
if (strncasecomp(pSrc, "body", 4) == 0)
return 0;
break;
case 'p':
case 'P': /* quit if we see tag */
ch = *(pSrc + 1);
if (ch == '>' || ch == ' ' || ch == '\t')
return 0;
break;
}
}
return 0;
}