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;

        // Stop on system exit
        if (SYS_exit)
                return KEY_NULL;

        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 (%d) !\n", result);
                        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 || ch == 0xa) && (time(0) - t_begin < sec));

        return ch;
}

int ikbhit()
{
        int len;

        ioctl(0, FIONREAD, &len);

        return len;
}
1	sysadm	1.1	/***************************************************************************
2	sysadm	1.14	io.c - description
3			-------------------
4			begin : Mon Oct 18 2004
5			copyright : (C) 2004 by Leaflet
6			email : leaflet@leafok.com
7	sysadm	1.1	***************************************************************************/
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	sysadm	1.14	int outc(char c)
29	sysadm	1.1	{
30	sysadm	1.14	int retval;
31	sysadm	1.1
32	sysadm	1.14	retval = fprintf(stdout, "%c", c);
33	sysadm	1.1
34	sysadm	1.14	return retval;
35	sysadm	1.1	}
36
37	sysadm	1.14	int prints(const char *format, ...)
38	sysadm	1.1	{
39	sysadm	1.14	va_list args;
40			int retval;
41	sysadm	1.1
42	sysadm	1.14	va_start(args, format);
43			retval = vfprintf(stdout, format, args);
44			va_end(args);
45	sysadm	1.1
46	sysadm	1.14	return retval;
47	sysadm	1.1	}
48
49	sysadm	1.14	int iflush()
50	sysadm	1.1	{
51	sysadm	1.14	int retval;
52	sysadm	1.6
53	sysadm	1.14	retval = fflush(stdout);
54	sysadm	1.6
55	sysadm	1.14	return retval;
56	sysadm	1.1	}
57
58	sysadm	1.14	int igetch()
59	sysadm	1.1	{
60	sysadm	1.14	static char buf[256];
61			unsigned char c, tmp[256];
62			int out = KEY_NULL, loop = 1, in_esc = 0, in_ascii = 0, in_control = 0, i = 0, j, result;
63			static int len = 0, pos = 0;
64			fd_set testfds;
65			struct timeval timeout;
66	sysadm	1.1
67	sysadm	1.14	// Stop on system exit
68			if (SYS_exit)
69			return KEY_NULL;
70	sysadm	1.12
71	sysadm	1.14	if (pos >= len)
72			{
73			pos = 0;
74			len = 0;
75	sysadm	1.2
76	sysadm	1.14	FD_ZERO(&testfds);
77			FD_SET(0, &testfds);
78	sysadm	1.9
79	sysadm	1.14	timeout.tv_sec = 1;
80			timeout.tv_usec = 0;
81	sysadm	1.9
82	sysadm	1.14	result = SignalSafeSelect(FD_SETSIZE, &testfds, (fd_set *)NULL,
83			(fd_set *)NULL, &timeout);
84	sysadm	1.9
85	sysadm	1.14	if (result == 0)
86			{
87			return KEY_TIMEOUT;
88			}
89			if (result < 0)
90			{
91			log_error("select() error (%d) !\n", result);
92			return KEY_NULL;
93			}
94			if (result > 0)
95			{
96			if (FD_ISSET(0, &testfds))
97			{
98			len = read(0, buf, 255);
99			}
100			}
101
102			// For debug
103			// for (j = 0; j < len; j++)
104			// log_std ("<--[%u]\n", (buf[j] + 256) % 256);
105	sysadm	1.11	}
106	sysadm	1.14
107			while (pos < len)
108	sysadm	1.11	{
109	sysadm	1.14	c = buf[pos++];
110	sysadm	1.5
111	sysadm	1.14	if (c == '\0')
112			{
113			out = c;
114			break;
115			}
116	sysadm	1.1
117	sysadm	1.14	if (c == KEY_CONTROL)
118			{
119			if (in_control == 0)
120			{
121			in_control = 1;
122			i = 0;
123			continue;
124			}
125			}
126	sysadm	1.1
127	sysadm	1.14	if (in_control)
128			{
129			tmp[i++] = c;
130			if (i >= 2)
131			{
132			out = (int)tmp[0] * 256 + tmp[1];
133			in_control = 0;
134			break;
135			}
136			continue;
137			}
138	sysadm	1.6
139	sysadm	1.14	if (c == ESC_KEY)
140			{
141			if (in_esc == 0)
142			{
143			in_esc = 1;
144			in_ascii = 1;
145			i = 0;
146			continue;
147			}
148			else
149			{
150			out = ESC_KEY;
151			in_esc = 0;
152			break;
153			}
154			}
155	sysadm	1.3
156	sysadm	1.14	in_esc = 0;
157	sysadm	1.1
158	sysadm	1.14	if (in_ascii)
159			{
160			tmp[i++] = c;
161			if (c == 'm')
162			{
163			in_ascii = 0;
164			continue;
165			}
166			if (i == 2 && c >= 'A' && c <= 'D')
167			{
168			in_ascii = 0;
169			switch (c)
170			{
171			case 'A':
172			out = KEY_UP;
173			break;
174			case 'B':
175			out = KEY_DOWN;
176			break;
177			case 'C':
178			out = KEY_RIGHT;
179			break;
180			case 'D':
181			out = KEY_LEFT;
182			break;
183			}
184			break;
185			}
186			if (i == 3 && tmp[0] == 91 && tmp[2] == 126)
187			{
188			in_ascii = 0;
189			switch (tmp[1])
190			{
191			case 49:
192			out = KEY_HOME;
193			break;
194			case 51:
195			out = KEY_DEL;
196			break;
197			case 52:
198			out = KEY_END;
199			break;
200			case 53:
201			out = KEY_PGUP;
202			break;
203			case 54:
204			out = KEY_PGDN;
205			break;
206			}
207			break;
208			}
209			continue;
210			}
211	sysadm	1.1
212	sysadm	1.14	out = ((int)c + 256) % 256;
213			break;
214	sysadm	1.1	}
215
216	sysadm	1.14	// for debug
217			// log_std ("-->[%u]\n", out);
218	sysadm	1.1
219	sysadm	1.14	return out;
220	sysadm	1.1	}
221	sysadm	1.5
222	sysadm	1.14	int igetch_t(long int sec)
223	sysadm	1.9	{
224	sysadm	1.14	int ch;
225			time_t t_begin = time(0);
226	sysadm	1.10
227	sysadm	1.14	do
228			{
229			ch = igetch();
230			} while ((ch == KEY_TIMEOUT \|\| ch == 0xa) && (time(0) - t_begin < sec));
231	sysadm	1.9
232	sysadm	1.14	return ch;
233	sysadm	1.9	}
234
235	sysadm	1.14	int ikbhit()
236	sysadm	1.5	{
237	sysadm	1.14	int len;
238	sysadm	1.6
239	sysadm	1.14	ioctl(0, FIONREAD, &len);
240	sysadm	1.6
241	sysadm	1.14	return len;
242	sysadm	1.5	}
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