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/* GNU SED, a batch stream editor.
Copyright (C) 2003, 2006, 2009 Free Software Foundation, Inc.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3, or (at your option)
any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */
#include "sed.h"
#include <stdlib.h>
#include <string.h>
#include "localcharset.h"
int mb_cur_max;
bool is_utf8;
/* Add a byte to the multibyte character represented by the state
CUR_STAT, and answer its length if a character is completed,
or -2 if it is yet to be completed. */
int brlen (ch, cur_stat)
int ch;
mbstate_t *cur_stat;
{
char c = ch;
/* If we use the generic brlen, then MBRLEN == mbrlen. */
int result = mbrtowc(NULL, &c, 1, cur_stat);
/* An invalid sequence is treated like a singlebyte character. */
if (result == -1)
{
memset (cur_stat, 0, sizeof (mbstate_t));
return 1;
}
return result;
}
void
initialize_mbcs ()
{
/* For UTF-8, we know that the encoding is stateless. */
const char *codeset_name;
codeset_name = locale_charset ();
is_utf8 = (strcmp (codeset_name, "UTF-8") == 0);
mb_cur_max = MB_CUR_MAX;
}
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