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/* GNU Mailutils -- a suite of utilities for electronic mail
Copyright (C) 2010-2012 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/>. */
/* MH prompter - traditional tty/termios support */
#include <mh.h>
#include "prompter.h"
#include "muaux.h"
#if HAVE_TERMIOS_H
# include <termios.h>
#endif
mu_stream_t strin;
#if HAVE_TCGETATTR
struct termios tios;
#endif
static int
decode_key (const char *keyseq)
{
if (keyseq[0] == '^' && keyseq[1])
{
if (keyseq[2])
{
mu_error (_("invalid keysequence (%s near %d)"),
keyseq, 2);
exit (1);
}
return keyseq[1] + 0100;
}
else if (keyseq[0] == '\\')
{
int i;
int c = 0;
for (i = 1; i <= 3; i++)
{
int n;
switch (keyseq[i])
{
case '0':
n = 0;
break;
case '1':
n = 1;
break;
case '2':
n = 2;
break;
case '3':
n = 3;
break;
case '4':
n = 4;
break;
case '5':
n = 5;
break;
case '6':
n = 6;
break;
case '7':
n = 7;
break;
default:
mu_error (_("invalid keysequence (%s near %d)"),
keyseq, i);
exit (1);
}
c = (c << 3) + n;
}
if (keyseq[i])
{
mu_error (_("invalid keysequence (%s near %d)"),
keyseq, i);
exit (1);
}
return c;
}
else if (keyseq[1])
{
mu_error (_("invalid keysequence (%s near %d)"),
keyseq, 2);
exit (1);
}
return keyseq[0];
}
static RETSIGTYPE
sighan (int signo)
{
prompter_done ();
exit (0);
}
void
prompter_init ()
{
int rc;
if ((rc = mu_stdio_stream_create (&strin, MU_STDIN_FD, MU_STREAM_READ)))
{
mu_error (_("cannot open stdout: %s"), mu_strerror (rc));
exit (1);
}
#if HAVE_TCGETATTR
rc = tcgetattr (MU_STDOUT_FD, &tios);
if (rc)
{
mu_error (_("tcgetattr failed: %s"), mu_strerror (rc));
exit (1);
}
else
{
static int sigtab[] = { SIGPIPE, SIGABRT, SIGINT, SIGQUIT, SIGTERM };
mu_set_signals (sighan, sigtab, MU_ARRAY_SIZE (sigtab));
}
#endif
}
void
prompter_done ()
{
#if HAVE_TCGETATTR
int rc = tcsetattr (MU_STDOUT_FD, TCSANOW, &tios);
if (rc)
mu_error (_("tcsetattr failed: %s"), mu_strerror (rc));
#endif
}
void
prompter_set_erase (const char *keyseq)
{
#if HAVE_TCGETATTR
int rc;
struct termios t = tios;
t.c_lflag |= ICANON;
t.c_cc[VERASE] = decode_key (keyseq);
rc = tcsetattr (MU_STDOUT_FD, TCSANOW, &t);
if (rc)
mu_error (_("tcsetattr failed: %s"), mu_strerror (rc));
#endif
}
void
prompter_set_kill (const char *keyseq)
{
#if HAVE_TCGETATTR
int rc;
struct termios t = tios;
t.c_lflag |= ICANON;
t.c_cc[VKILL] = decode_key (keyseq);
rc = tcsetattr (MU_STDOUT_FD, TCSANOW, &t);
if (rc)
mu_error (_("tcsetattr failed: %s"), mu_strerror (rc));
#endif
}
char *
prompter_get_value (const char *name)
{
size_t size = 0, n;
char *buf = NULL;
mu_stream_printf (strout, "%s: ", name);
mu_stream_flush (strout);
if (mu_stream_getline (strin, &buf, &size, &n) || n == 0)
return NULL;
mu_rtrim_cset (buf, "\n");
return buf;
}
char *
prompter_get_line ()
{
size_t size = 0, n;
char *buf = NULL;
if (mu_stream_getline (strin, &buf, &size, &n) || n == 0)
return NULL;
mu_rtrim_cset (buf, "\n");
return doteof_filter (buf);
}
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