encode2047.c
3.08 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
/* GNU Mailutils -- a suite of utilities for electronic mail
Copyright (C) 2005-2007, 2010-2012, 2014-2017 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;
while ((rc = getopt (argc, argv, "c:e:hot")) != EOF)
switch (rc)
{
case 'c':
charset = optarg;
break;
case 'e':
encoding = optarg;
break;
case 'o':
octal = 1;
break;
case 't':
octal = 0;
break;
case 'h':
printf ("usage: %s [-c charset] [-e encoding] [-ot]\n", argv[0]);
exit (0);
default:
exit (1);
}
mu_stdstream_setup (MU_STDSTREAM_RESET_NONE);
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;
}