decode.c
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/* GNU Mailutils -- a suite of utilities for electronic mail
Copyright (C) 1999, 2000, 2001, 2002, 2003, 2005, 2006, 2007, 2009,
2010 Free Software Foundation, Inc.
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 3 of the License, or (at your option) any later version.
This library 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General
Public License along with this library. If not, see
<http://www.gnu.org/licenses/>. */
#if HAVE_CONFIG_H
# include <config.h>
#endif
#include <unistd.h>
#include <string.h>
#include <errno.h>
#include <mailutils/stream.h>
#include <mailutils/filter.h>
#include <mailutils/cstr.h>
enum mu_iconv_fallback_mode mu_default_fallback_mode = mu_fallback_copy_octal;
int
mu_set_default_fallback (const char *str)
{
if (strcmp (str, "none") == 0)
mu_default_fallback_mode = mu_fallback_none;
else if (strcmp (str, "copy-pass") == 0)
mu_default_fallback_mode = mu_fallback_copy_pass;
else if (strcmp (str, "copy-octal") == 0)
mu_default_fallback_mode = mu_fallback_copy_octal;
else
return EINVAL;
return 0;
}
int
mu_decode_filter (mu_stream_t *pfilter, mu_stream_t input,
const char *filter_type,
const char *fromcode, const char *tocode)
{
mu_stream_t filter;
int status = mu_filter_create (&filter, input, filter_type,
MU_FILTER_DECODE, MU_STREAM_READ);
if (status)
return status;
if (fromcode && tocode && mu_c_strcasecmp (fromcode, tocode))
{
mu_stream_t cvt;
status = mu_filter_iconv_create (&cvt, filter, fromcode, tocode,
0, mu_default_fallback_mode);
if (status == 0)
{
mu_stream_unref (filter);
filter = cvt;
}
}
*pfilter = filter;
return 0;
}