lbbs/src/io.c

/***************************************************************************
                            io.c  -  description
                             -------------------
    begin                : Mon Oct 18 2004
    copyright            : (C) 2004 by Leaflet
    email                : leaflet@leafok.com
 ***************************************************************************/

/***************************************************************************
 *                                                                         *
 *   This program 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 2 of the License, or     *
 *   (at your option) any later version.                                   *
 *                                                                         *
 ***************************************************************************/

#include "io.h"
#include "common.h"
#include "tcplib.h"
#include <stdio.h>
#include <stdarg.h>
#include <time.h>
#include <fcntl.h>
#include <unistd.h>
#include <sys/ioctl.h>

int
outc (char c)
{
  int retval;

  retval = fprintf (stdout, "%c", c);

  return retval;
}

int
prints (const char *format, ...)
{
  va_list args;
  int retval;

  va_start (args, format);
  retval = vfprintf (stdout, format, args);
  va_end (args);

  return retval;
}

int
iflush ()
{
  int retval;

  retval = fflush (stdout);

  return retval;
}

int
igetch ()
{
  static char buf[256];
  unsigned char c, tmp[256];
  int out = KEY_NULL, loop = 1, in_esc = 0, in_ascii = 0, in_control = 0, i =
    0, j, result;
  static int len = 0, pos = 0;
  fd_set testfds;
  struct timeval timeout;

  if (pos >= len)
    {
      pos = 0;
      len = 0;

      FD_ZERO (&testfds);
      FD_SET (0, &testfds);

      timeout.tv_sec = 1;
      timeout.tv_usec = 0;

      result = SignalSafeSelect (FD_SETSIZE, &testfds, (fd_set *) NULL,
                       (fd_set *) NULL, &timeout);

      if (result == 0)
        {
          return KEY_TIMEOUT;
        }
      if (result < 0)
        {
          log_error ("select() error!\n");
          return KEY_NULL;
        }
      if (result > 0)
        {
          if (FD_ISSET (0, &testfds))
            {
              len = read (0, buf, 255);
            }
        }

      //For debug
      //for (j = 0; j < len; j++)
      //  log_std ("<--[%u]\n", (buf[j] + 256) % 256);
    }

  while (pos < len)
    {
      c = buf[pos++];

      if (c == '\0')
        {
          out = c;
          break;
        }

      if (c == KEY_CONTROL)
        {
          if (in_control == 0)
            {
              in_control = 1;
              i = 0;
              continue;
            }
        }

      if (in_control)
        {
          tmp[i++] = c;
          if (i >= 2)
            {
              out = (int) tmp[0] * 256 + tmp[1];
              in_control = 0;
              break;
            }
          continue;
        }

      if (c == ESC_KEY)
        {
          if (in_esc == 0)
            {
              in_esc = 1;
              in_ascii = 1;
              i = 0;
              continue;
            }
          else
            {
              out = ESC_KEY;
              in_esc = 0;
              break;
            }
        }

      in_esc = 0;

      if (in_ascii)
        {
          tmp[i++] = c;
          if (c == 'm')
            {
              in_ascii = 0;
              continue;
            }
          if (i == 2 && c >= 'A' && c <= 'D')
            {
              in_ascii = 0;
              switch (c)
                {
                case 'A':
                  out = KEY_UP;
                  break;
                case 'B':
                  out = KEY_DOWN;
                  break;
                case 'C':
                  out = KEY_RIGHT;
                  break;
                case 'D':
                  out = KEY_LEFT;
                  break;
                }
              break;
            }
          if (i == 3 && tmp[0] == 91 && tmp[2] == 126)
            {
              in_ascii = 0;
              switch (tmp[1])
                {
                case 49:
                  out = KEY_HOME;
                  break;
                case 51:
                  out = KEY_DEL;
                  break;
                case 52:
                  out = KEY_END;
                  break;
                case 53:
                  out = KEY_PGUP;
                  break;
                case 54:
                  out = KEY_PGDN;
                  break;
                }
              break;
            }
          continue;
        }

      out = ((int) c + 256) % 256;
      break;
    }

  //for debug
  //log_std ("-->[%u]\n", out);

  return out;
}

int
igetch_t (long int sec)
{
  int ch;
  time_t t_begin = time (0);

  do
    {
      ch = igetch ();
    }
  while ((ch == KEY_TIMEOUT) && (time (0) - t_begin < sec));

  return ch;
}

int
ikbhit ()
{
  int len;

  ioctl (0, FIONREAD, &len);

  return len;
}
1	sysadm	1.1	/***************************************************************************
2			io.c - description
3			-------------------
4			begin : Mon Oct 18 2004
5			copyright : (C) 2004 by Leaflet
6			email : leaflet@leafok.com
7			***************************************************************************/
8
9			/***************************************************************************
10			* *
11			* This program is free software; you can redistribute it and/or modify *
12			* it under the terms of the GNU General Public License as published by *
13			* the Free Software Foundation; either version 2 of the License, or *
14			* (at your option) any later version. *
15			* *
16			***************************************************************************/
17
18			#include "io.h"
19			#include "common.h"
20	sysadm	1.11	#include "tcplib.h"
21	sysadm	1.1	#include <stdio.h>
22			#include <stdarg.h>
23	sysadm	1.9	#include <time.h>
24			#include <fcntl.h>
25			#include <unistd.h>
26	sysadm	1.5	#include <sys/ioctl.h>
27	sysadm	1.1
28			int
29	sysadm	1.6	outc (char c)
30	sysadm	1.1	{
31			int retval;
32
33	sysadm	1.6	retval = fprintf (stdout, "%c", c);
34	sysadm	1.1
35			return retval;
36			}
37
38			int
39	sysadm	1.6	prints (const char *format, ...)
40	sysadm	1.1	{
41			va_list args;
42			int retval;
43
44			va_start (args, format);
45			retval = vfprintf (stdout, format, args);
46			va_end (args);
47
48			return retval;
49			}
50
51			int
52	sysadm	1.6	iflush ()
53	sysadm	1.1	{
54			int retval;
55	sysadm	1.6
56	sysadm	1.1	retval = fflush (stdout);
57	sysadm	1.6
58	sysadm	1.1	return retval;
59			}
60
61			int
62			igetch ()
63			{
64			static char buf[256];
65	sysadm	1.3	unsigned char c, tmp[256];
66	sysadm	1.8	int out = KEY_NULL, loop = 1, in_esc = 0, in_ascii = 0, in_control = 0, i =
67	sysadm	1.9	0, j, result;
68	sysadm	1.6	static int len = 0, pos = 0;
69	sysadm	1.11	fd_set testfds;
70	sysadm	1.9	struct timeval timeout;
71	sysadm	1.1
72			if (pos >= len)
73	sysadm	1.6	{
74			pos = 0;
75	sysadm	1.9	len = 0;
76	sysadm	1.2
77	sysadm	1.11	FD_ZERO (&testfds);
78			FD_SET (0, &testfds);
79	sysadm	1.9
80			timeout.tv_sec = 1;
81			timeout.tv_usec = 0;
82
83	sysadm	1.11	result = SignalSafeSelect (FD_SETSIZE, &testfds, (fd_set *) NULL,
84	sysadm	1.9	(fd_set *) NULL, &timeout);
85
86	sysadm	1.11	if (result == 0)
87			{
88			return KEY_TIMEOUT;
89			}
90			if (result < 0)
91	sysadm	1.9	{
92			log_error ("select() error!\n");
93	sysadm	1.11	return KEY_NULL;
94			}
95			if (result > 0)
96			{
97	sysadm	1.9	if (FD_ISSET (0, &testfds))
98			{
99			len = read (0, buf, 255);
100			}
101			}
102	sysadm	1.5
103	sysadm	1.6	//For debug
104			//for (j = 0; j < len; j++)
105			// log_std ("<--[%u]\n", (buf[j] + 256) % 256);
106			}
107	sysadm	1.1
108			while (pos < len)
109			{
110			c = buf[pos++];
111
112			if (c == '\0')
113	sysadm	1.6	{
114			out = c;
115			break;
116			}
117	sysadm	1.1
118	sysadm	1.3	if (c == KEY_CONTROL)
119	sysadm	1.6	{
120			if (in_control == 0)
121			{
122			in_control = 1;
123			i = 0;
124			continue;
125			}
126			}
127
128	sysadm	1.3	if (in_control)
129	sysadm	1.6	{
130			tmp[i++] = c;
131			if (i >= 2)
132			{
133			out = (int) tmp[0] * 256 + tmp[1];
134			in_control = 0;
135			break;
136			}
137			continue;
138			}
139	sysadm	1.3
140	sysadm	1.1	if (c == ESC_KEY)
141			{
142			if (in_esc == 0)
143			{
144			in_esc = 1;
145			in_ascii = 1;
146			i = 0;
147			continue;
148			}
149			else
150			{
151			out = ESC_KEY;
152			in_esc = 0;
153			break;
154			}
155			}
156
157			in_esc = 0;
158
159			if (in_ascii)
160			{
161			tmp[i++] = c;
162			if (c == 'm')
163			{
164			in_ascii = 0;
165			continue;
166			}
167			if (i == 2 && c >= 'A' && c <= 'D')
168			{
169			in_ascii = 0;
170			switch (c)
171			{
172			case 'A':
173			out = KEY_UP;
174			break;
175			case 'B':
176			out = KEY_DOWN;
177			break;
178			case 'C':
179	sysadm	1.2	out = KEY_RIGHT;
180			break;
181			case 'D':
182	sysadm	1.1	out = KEY_LEFT;
183			break;
184	sysadm	1.2	}
185			break;
186			}
187			if (i == 3 && tmp[0] == 91 && tmp[2] == 126)
188			{
189			in_ascii = 0;
190			switch (tmp[1])
191			{
192			case 49:
193			out = KEY_HOME;
194			break;
195	sysadm	1.4	case 51:
196			out = KEY_DEL;
197			break;
198	sysadm	1.2	case 52:
199			out = KEY_END;
200			break;
201			case 53:
202			out = KEY_PGUP;
203			break;
204			case 54:
205	sysadm	1.8	out = KEY_PGDN;
206	sysadm	1.1	break;
207			}
208			break;
209			}
210			continue;
211			}
212
213	sysadm	1.6	out = ((int) c + 256) % 256;
214	sysadm	1.1	break;
215			}
216
217			//for debug
218	sysadm	1.5	//log_std ("-->[%u]\n", out);
219	sysadm	1.1
220			return out;
221			}
222	sysadm	1.5
223			int
224	sysadm	1.9	igetch_t (long int sec)
225			{
226			int ch;
227	sysadm	1.10	time_t t_begin = time (0);
228
229			do
230			{
231			ch = igetch ();
232			}
233			while ((ch == KEY_TIMEOUT) && (time (0) - t_begin < sec));
234	sysadm	1.9
235			return ch;
236			}
237
238			int
239	sysadm	1.6	ikbhit ()
240	sysadm	1.5	{
241			int len;
242	sysadm	1.6
243	sysadm	1.5	ioctl (0, FIONREAD, &len);
244	sysadm	1.6
245	sysadm	1.5	return len;
246			}
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