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
|
/* public domain */
/*
* arbitrary data on stdin -> Quoted-Printable data on stdout
*
* UNIX's newline convention is used, i.e. one ASCII control-j (10 decimal).
*/
#include <stdio.h>
#ifdef _WIN32
#ifndef WIN32
#define WIN32
#endif
#endif
#ifdef WIN32
#include <io.h>
#include <fcntl.h>
#endif
char *hexdigits = "0123456789ABCDEF";
int
main()
{
int c;
int cols = 0;
#ifdef WIN32
_setmode( _fileno(stdout), _O_BINARY);
#endif
while ((c = getchar()) != EOF) {
if (c == '\n') {
putchar(c);
cols = 0;
} else if (c == ' ') {
int nextc;
nextc = getchar();
if (nextc != '\n' && nextc != EOF) {
putchar(c);
cols++;
} else {
putchar('=');
putchar(hexdigits[c >> 4]);
putchar(hexdigits[c & 0xf]);
cols += 3;
}
if (nextc != EOF)
ungetc(nextc, stdin);
} else if (c < 33 || c > 126 || c == '=' ||
/* these are for RFC 2047 Q encoding */
c == '?' || c == '_') {
putchar('=');
putchar(hexdigits[c >> 4]);
putchar(hexdigits[c & 0xf]);
cols += 3;
} else if (c == '.' && cols == 0) {
int nextc;
nextc = getchar();
if (nextc == EOF || nextc == '\n') {
putchar('=');
putchar(hexdigits[c >> 4]);
putchar(hexdigits[c & 0xf]);
cols += 3;
} else {
putchar(c);
cols++;
}
if (nextc != EOF)
ungetc(nextc, stdin);
} else {
putchar(c);
cols++;
}
if (cols > 70) {
putchar('=');
putchar('\n');
cols = 0;
}
}
exit(0);
}
|
