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/***************************************************************************
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io.c - description
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-------------------
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begin : Mon Oct 18 2004
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copyright : (C) 2004 by Leaflet
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email : leaflet@leafok.com
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***************************************************************************/
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/***************************************************************************
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* *
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* This program is free software; you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License as published by *
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* the Free Software Foundation; either version 2 of the License, or *
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* (at your option) any later version. *
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* *
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***************************************************************************/
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#include "io.h"
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#include "common.h"
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#include <stdio.h>
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#include <stdarg.h>
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#include <time.h>
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#include <fcntl.h>
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#include <unistd.h>
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#include <sys/ioctl.h>
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int
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outc (char c)
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{
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int retval;
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retval = fprintf (stdout, "%c", c);
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return retval;
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}
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int
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prints (const char *format, ...)
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{
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va_list args;
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int retval;
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va_start (args, format);
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retval = vfprintf (stdout, format, args);
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va_end (args);
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return retval;
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}
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int
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iflush ()
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{
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int retval;
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retval = fflush (stdout);
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return retval;
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}
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int
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igetch ()
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{
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static char buf[256];
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unsigned char c, tmp[256];
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int out = KEY_NULL, loop = 1, in_esc = 0, in_ascii = 0, in_control = 0, i =
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0, j, result;
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static int len = 0, pos = 0;
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fd_set inputs, testfds;
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struct timeval timeout;
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if (pos >= len)
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{
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pos = 0;
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len = 0;
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FD_ZERO (&inputs);
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FD_SET (0, &inputs);
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testfds = inputs;
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timeout.tv_sec = 1;
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timeout.tv_usec = 0;
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result = select (FD_SETSIZE, &testfds, (fd_set *) NULL,
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(fd_set *) NULL, &timeout);
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switch (result)
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{
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case 0:
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out = KEY_TIMEOUT;
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break;
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case -1:
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log_error ("select() error!\n");
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break;
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default:
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if (FD_ISSET (0, &testfds))
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{
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len = read (0, buf, 255);
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}
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break;
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}
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//For debug
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//for (j = 0; j < len; j++)
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// log_std ("<--[%u]\n", (buf[j] + 256) % 256);
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}
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while (pos < len)
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{
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c = buf[pos++];
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if (c == '\0')
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{
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out = c;
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break;
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}
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if (c == KEY_CONTROL)
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{
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if (in_control == 0)
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{
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in_control = 1;
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i = 0;
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continue;
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}
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}
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if (in_control)
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{
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tmp[i++] = c;
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if (i >= 2)
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{
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out = (int) tmp[0] * 256 + tmp[1];
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in_control = 0;
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break;
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}
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continue;
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}
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if (c == ESC_KEY)
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{
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if (in_esc == 0)
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{
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in_esc = 1;
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in_ascii = 1;
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i = 0;
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continue;
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}
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else
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{
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out = ESC_KEY;
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in_esc = 0;
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break;
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}
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}
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in_esc = 0;
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if (in_ascii)
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{
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tmp[i++] = c;
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if (c == 'm')
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{
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in_ascii = 0;
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continue;
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}
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if (i == 2 && c >= 'A' && c <= 'D')
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{
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in_ascii = 0;
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switch (c)
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{
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case 'A':
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out = KEY_UP;
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break;
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case 'B':
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out = KEY_DOWN;
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break;
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case 'C':
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out = KEY_RIGHT;
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break;
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case 'D':
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out = KEY_LEFT;
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break;
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}
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break;
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}
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if (i == 3 && tmp[0] == 91 && tmp[2] == 126)
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{
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in_ascii = 0;
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switch (tmp[1])
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{
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case 49:
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out = KEY_HOME;
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break;
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case 51:
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out = KEY_DEL;
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break;
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case 52:
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out = KEY_END;
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break;
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case 53:
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out = KEY_PGUP;
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break;
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case 54:
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out = KEY_PGDN;
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break;
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}
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break;
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}
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continue;
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}
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out = ((int) c + 256) % 256;
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break;
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}
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//for debug
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//log_std ("-->[%u]\n", out);
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return out;
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}
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int
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igetch_t (long int sec)
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{
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int ch;
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time_t t_begin = time (0);
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do
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{
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ch = igetch ();
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}
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while ((ch == KEY_TIMEOUT) && (time (0) - t_begin < sec));
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return ch;
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}
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int
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ikbhit ()
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{
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int len;
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ioctl (0, FIONREAD, &len);
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return len;
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}
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