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/* GNU Mailutils -- a suite of utilities for electronic mail
Copyright (C) 2005-2025 Free Software Foundation, Inc.
GNU Mailutils 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.
GNU Mailutils 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 GNU Mailutils. If not, see <http://www.gnu.org/licenses/>. */
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#include <stdio.h>
#include <stdlib.h>
#include <errno.h>
#include <string.h>
#include <mailutils/mailutils.h>
/* Replace all octal escapes in BUF with the corresponding characters. */
static void
decode_octal (char *buf)
{
char *p;
unsigned i, n;
for (p = buf; *p;)
{
if (*buf == '\\')
{
buf++;
switch (*buf)
{
case 'a':
*p++ = '\a';
buf++;
break;
case 'b':
*p++ = '\b';
buf++;
break;
case 'f':
*p++ = '\f';
buf++;
break;
case 'n':
*p++ = '\n';
buf++;
break;
case 'r':
*p++ = '\r';
buf++;
break;
case 't':
*p++ = '\t';
buf++;
break;
case '0': case '1': case '2': case '3':
case '4': case '5': case '6': case '7':
n = 0;
for (i = 0; i < 3; i++, buf++)
{
unsigned x = *(unsigned char*)buf - '0';
if (x > 7)
break;
n <<= 3;
n += x;
}
if (i != 3)
{
buf -= i;
*p++ = '\\';
}
else
*p++ = n;
break;
default:
*p++ = '\\';
*p++ = *buf++;
break;
}
}
else
*p++ = *buf++;
}
*p = 0;
}
int
main (int argc, char *argv[])
{
int rc;
char *buf = NULL;
size_t size = 0;
size_t n;
char *charset = "iso-8859-1";
char *encoding = "quoted-printable";
int octal = 0;
struct mu_option options[] = {
{ "charset", 'c', "NAME", MU_OPTION_DEFAULT,
"define input character set", mu_c_string, &charset },
{ "encoding", 'e', "NAME", MU_OPTION_DEFAULT,
"define input encoding", mu_c_string, &encoding },
{ "octal", 'o', NULL, MU_OPTION_DEFAULT,
"decode octal escape notations on input", mu_c_bool, &octal },
MU_OPTION_END
};
mu_set_program_name (argv[0]);
mu_stdstream_setup (MU_STDSTREAM_RESET_NONE);
mu_cli_simple (argc, argv,
MU_CLI_OPTION_OPTIONS, options,
MU_CLI_OPTION_PROG_DOC, "Test RFC 2047 encoding function",
MU_CLI_OPTION_EXTRA_INFO, "Defaults are: --charset=iso-8859-1 --encoding=quoted-printable",
MU_CLI_OPTION_END);
while ((rc = mu_stream_getline (mu_strin, &buf, &size, &n)) == 0 && n > 0)
{
char *p;
mu_rtrim_class (buf, MU_CTYPE_ENDLN);
if (octal)
decode_octal (buf);
rc = mu_rfc2047_encode (charset, encoding, buf, &p);
if (rc)
mu_diag_funcall (MU_DIAG_ERROR, "mu_rfc2047_encode", NULL, rc);
else if (p)
mu_printf ("%s\n", p);
free (p);
}
if (rc)
mu_diag_funcall (MU_DIAG_ERROR, "mu_stream_getline", NULL, rc);
return 0;
}
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