imapfilter/imapfilter/tty.c

#include <stdio.h>
#include <string.h>
#include <errno.h>
#include <termios.h>

#include "config.h"
#include "imapfilter.h"


extern unsigned int flags;

static struct termios otio, ntio;       /* Original and new tty settings. */


/*
 * Store original term attributes.
 */
int tty_store(void)
{
    if (tcgetattr(fileno(stdout), &otio)) {
        error("imapfilter: getting term attributes; %s\n", strerror(errno));
        return ERROR_TERMIO;
    }
    
    return 0;
}


/*
 * Disable echo.
 */
int tty_disable_echo(void)
{
    ntio = otio;
    ntio.c_lflag &= ~(ECHO | ECHOE | ECHOK | ECHONL);

    flags |= FLAG_TTY_MODIFIED;

    if (tcsetattr(fileno(stdout), TCSAFLUSH, &ntio)) {
        error("imapfilter: setting term attributes; %s\n", strerror(errno));
        return ERROR_TERMIO;
    }
    return 0;
}


/*
 * Restore original term attributes.
 */
int tty_restore(void)
{
    if (!(flags & FLAG_TTY_MODIFIED))
        return 0;
    
    if (tcsetattr(fileno(stdout), TCSAFLUSH, &otio)) {
        error("imapfilter: setting term attributes; %s\n", strerror(errno));
        return ERROR_TERMIO;
    }

    flags &= ~(FLAG_TTY_MODIFIED);
    
    return 0;
}
1	lefcha	1.1	#include <stdio.h>
2			#include <string.h>
3			#include <errno.h>
4			#include <termios.h>
5
6	lefcha	1.2	#include "config.h"
7	lefcha	1.1	#include "imapfilter.h"
8
9
10	lefcha	1.4	extern unsigned int flags;
11
12	lefcha	1.3	static struct termios otio, ntio; /* Original and new tty settings. */
13	lefcha	1.1
14
15			/*
16			* Store original term attributes.
17			*/
18			int tty_store(void)
19			{
20			if (tcgetattr(fileno(stdout), &otio)) {
21			error("imapfilter: getting term attributes; %s\n", strerror(errno));
22			return ERROR_TERMIO;
23			}
24	lefcha	1.3
25	lefcha	1.1	return 0;
26			}
27
28
29			/*
30			* Disable echo.
31			*/
32			int tty_disable_echo(void)
33			{
34			ntio = otio;
35			ntio.c_lflag &= ~(ECHO \| ECHOE \| ECHOK \| ECHONL);
36	lefcha	1.4
37			flags \|= FLAG_TTY_MODIFIED;
38	lefcha	1.2
39	lefcha	1.1	if (tcsetattr(fileno(stdout), TCSAFLUSH, &ntio)) {
40			error("imapfilter: setting term attributes; %s\n", strerror(errno));
41			return ERROR_TERMIO;
42			}
43			return 0;
44			}
45
46
47			/*
48			* Restore original term attributes.
49			*/
50			int tty_restore(void)
51			{
52	lefcha	1.4	if (!(flags & FLAG_TTY_MODIFIED))
53	lefcha	1.3	return 0;
54
55	lefcha	1.1	if (tcsetattr(fileno(stdout), TCSAFLUSH, &otio)) {
56			error("imapfilter: setting term attributes; %s\n", strerror(errno));
57			return ERROR_TERMIO;
58			}
59	lefcha	1.4
60			flags &= ~(FLAG_TTY_MODIFIED);
61	lefcha	1.3
62	lefcha	1.1	return 0;
63			}