src/rt/editline.c

#ifndef lint
static const char       RCSid[] = "$Id$";
#endif
/*
 *  editline.c - routine for editing raw input for rview.
 *
 *  External symbols declared in driver.h
 */

/* ====================================================================
 * The Radiance Software License, Version 1.0
 *
 * Copyright (c) 1990 - 2002 The Regents of the University of California,
 * through Lawrence Berkeley National Laboratory.   All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *         notice, this list of conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form must reproduce the above copyright
 *       notice, this list of conditions and the following disclaimer in
 *       the documentation and/or other materials provided with the
 *       distribution.
 *
 * 3. The end-user documentation included with the redistribution,
 *           if any, must include the following acknowledgment:
 *             "This product includes Radiance software
 *                 (http://radsite.lbl.gov/)
 *                 developed by the Lawrence Berkeley National Laboratory
 *               (http://www.lbl.gov/)."
 *       Alternately, this acknowledgment may appear in the software itself,
 *       if and wherever such third-party acknowledgments normally appear.
 *
 * 4. The names "Radiance," "Lawrence Berkeley National Laboratory"
 *       and "The Regents of the University of California" must
 *       not be used to endorse or promote products derived from this
 *       software without prior written permission. For written
 *       permission, please contact [email protected].
 *
 * 5. Products derived from this software may not be called "Radiance",
 *       nor may "Radiance" appear in their name, without prior written
 *       permission of Lawrence Berkeley National Laboratory.
 *
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED.   IN NO EVENT SHALL Lawrence Berkeley National Laboratory OR
 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of Lawrence Berkeley National Laboratory.   For more
 * information on Lawrence Berkeley National Laboratory, please see
 * <http://www.lbl.gov/>.
 */

#include "color.h"

#include "driver.h"

#define iscntrl(c)      ((c) < ' ')
#define isblank(c)      ((c) == ' ')
#define iserase(c)      ((c) == '\b' || (c) == 127)
#define iswerase(c)     ((c) == 'W'-'@')
#define iskill(c)       ((c) == 'U'-'@' || (c) == 'X'-'@')


void
editline(buf, c_get, s_put)     /* edit input line */
char  *buf;
int  (*c_get)();
void  (*s_put)();
{
        static char  erases[] = "\b \b";
        static char  obuf[4];
        register int  i;
        register int  c;
        
        i = 0;
        while ((c = (*c_get)()&0177) != '\n' && c != '\r')
                if (iserase(c)) {               /* single char erase */
                        if (i > 0) {
                                (*s_put)(erases);
                                --i;
                        }
                } else if (iswerase(c)) {       /* word erase */
                        while (i > 0 && isblank(buf[i-1])) {
                                (*s_put)(erases);
                                --i;
                        }
                        while (i > 0 && !isblank(buf[i-1])) {
                                (*s_put)(erases);
                                --i;
                        }
                } else if (iskill(c)) {         /* kill line */
                        while (i > 0) {
                                (*s_put)(erases);
                                --i;
                        }
                } else if (iscntrl(c)) {                /* control char */
                        i = 0;
                        buf[i++] = c;
                        obuf[0] = '^'; obuf[1] = c|0100; obuf[2] = '\0';
                        (*s_put)(obuf);
                        break;
                } else {                                /* regular char */
                        buf[i++] = c;
                        obuf[0] = c; obuf[1] = '\0';
                        (*s_put)(obuf);
                }
        buf[i] = '\0';
        (*s_put)("\n");
}


static char  mybuf[512];


void
tocombuf(b, d)                          /* add command(s) to my buffer */
register char  *b;
register struct driver  *d;
{
        register char  *cp;
        char  *comstart;

        for (cp = mybuf; *cp; cp++)
                ;
        comstart = cp;
        while (*cp++ = *b)
                if (cp >= mybuf+sizeof(mybuf)) {
                        *comstart = '\0';
                        return;         /* what should I do about this? */
                } else if (*b++ == '\n') {
                        d->inpready++;
                        comstart = cp;
                }
}


int
fromcombuf(b, d)                        /* get command from my buffer */
char  *b;
struct driver  *d;
{
        register char   *cp;
                                                /* get next command */
        for (cp = mybuf; *cp != '\n'; cp++)
                if (!*cp)
                        return(0);
        *cp++ = '\0';
#ifdef DEBUG
        (*d->comout)(mybuf);                    /* echo my command */
        (*d->comout)("\n");
#endif
                                                /* send it as reply */
        strcpy(b, mybuf);
        d->inpready--;
                                                /* advance commands */
        strcpy(mybuf, cp);
        return(1);
}
Revision:	2.4
Committed:	Sat Feb 22 02:07:28 2003 UTC (21 years, 2 months ago) by greg
Content type:	text/plain
Branch:	MAIN
Changes since 2.3:	+68 -8 lines
Log Message:	Changes and check-in for 3.5 release Includes new source files and modifications not recorded for many years See ray/doc/notes/ReleaseNotes for notes between 3.1 and 3.5 release
#	Content
1	#ifndef lint
2	static const char RCSid[] = "$Id$";
3	#endif
4	/*
5	* editline.c - routine for editing raw input for rview.
6	*
7	* External symbols declared in driver.h
8	*/
9
10	/* ====================================================================
11	* The Radiance Software License, Version 1.0
12	*
13	* Copyright (c) 1990 - 2002 The Regents of the University of California,
14	* through Lawrence Berkeley National Laboratory. All rights reserved.
15	*
16	* Redistribution and use in source and binary forms, with or without
17	* modification, are permitted provided that the following conditions
18	* are met:
19	*
20	* 1. Redistributions of source code must retain the above copyright
21	* notice, this list of conditions and the following disclaimer.
22	*
23	* 2. Redistributions in binary form must reproduce the above copyright
24	* notice, this list of conditions and the following disclaimer in
25	* the documentation and/or other materials provided with the
26	* distribution.
27	*
28	* 3. The end-user documentation included with the redistribution,
29	* if any, must include the following acknowledgment:
30	* "This product includes Radiance software
31	* (http://radsite.lbl.gov/)
32	* developed by the Lawrence Berkeley National Laboratory
33	* (http://www.lbl.gov/)."
34	* Alternately, this acknowledgment may appear in the software itself,
35	* if and wherever such third-party acknowledgments normally appear.
36	*
37	* 4. The names "Radiance," "Lawrence Berkeley National Laboratory"
38	* and "The Regents of the University of California" must
39	* not be used to endorse or promote products derived from this
40	* software without prior written permission. For written
41	* permission, please contact [email protected].
42	*
43	* 5. Products derived from this software may not be called "Radiance",
44	* nor may "Radiance" appear in their name, without prior written
45	* permission of Lawrence Berkeley National Laboratory.
46	*
47	* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
48	* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
49	* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
50	* DISCLAIMED. IN NO EVENT SHALL Lawrence Berkeley National Laboratory OR
51	* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
52	* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
53	* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
54	* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
55	* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
56	* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
57	* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
58	* SUCH DAMAGE.
59	* ====================================================================
60	*
61	* This software consists of voluntary contributions made by many
62	* individuals on behalf of Lawrence Berkeley National Laboratory. For more
63	* information on Lawrence Berkeley National Laboratory, please see
64	* <http://www.lbl.gov/>.
65	*/
66
67	#include "color.h"
68
69	#include "driver.h"
70
71	#define iscntrl(c) ((c) < ' ')
72	#define isblank(c) ((c) == ' ')
73	#define iserase(c) ((c) == '\b' \|\| (c) == 127)
74	#define iswerase(c) ((c) == 'W'-'@')
75	#define iskill(c) ((c) == 'U'-'@' \|\| (c) == 'X'-'@')
76
77
78	void
79	editline(buf, c_get, s_put) /* edit input line */
80	char *buf;
81	int (*c_get)();
82	void (*s_put)();
83	{
84	static char erases[] = "\b \b";
85	static char obuf[4];
86	register int i;
87	register int c;
88
89	i = 0;
90	while ((c = (*c_get)()&0177) != '\n' && c != '\r')
91	if (iserase(c)) { /* single char erase */
92	if (i > 0) {
93	(*s_put)(erases);
94	--i;
95	}
96	} else if (iswerase(c)) { /* word erase */
97	while (i > 0 && isblank(buf[i-1])) {
98	(*s_put)(erases);
99	--i;
100	}
101	while (i > 0 && !isblank(buf[i-1])) {
102	(*s_put)(erases);
103	--i;
104	}
105	} else if (iskill(c)) { /* kill line */
106	while (i > 0) {
107	(*s_put)(erases);
108	--i;
109	}
110	} else if (iscntrl(c)) { /* control char */
111	i = 0;
112	buf[i++] = c;
113	obuf[0] = '^'; obuf[1] = c\|0100; obuf[2] = '\0';
114	(*s_put)(obuf);
115	break;
116	} else { /* regular char */
117	buf[i++] = c;
118	obuf[0] = c; obuf[1] = '\0';
119	(*s_put)(obuf);
120	}
121	buf[i] = '\0';
122	(*s_put)("\n");
123	}
124
125
126	static char mybuf[512];
127
128
129	void
130	tocombuf(b, d) /* add command(s) to my buffer */
131	register char *b;
132	register struct driver *d;
133	{
134	register char *cp;
135	char *comstart;
136
137	for (cp = mybuf; *cp; cp++)
138	;
139	comstart = cp;
140	while (cp++ = b)
141	if (cp >= mybuf+sizeof(mybuf)) {
142	*comstart = '\0';
143	return; /* what should I do about this? */
144	} else if (*b++ == '\n') {
145	d->inpready++;
146	comstart = cp;
147	}
148	}
149
150
151	int
152	fromcombuf(b, d) /* get command from my buffer */
153	char *b;
154	struct driver *d;
155	{
156	register char *cp;
157	/* get next command */
158	for (cp = mybuf; *cp != '\n'; cp++)
159	if (!*cp)
160	return(0);
161	*cp++ = '\0';
162	#ifdef DEBUG
163	(d->comout)(mybuf); / echo my command */
164	(*d->comout)("\n");
165	#endif
166	/* send it as reply */
167	strcpy(b, mybuf);
168	d->inpready--;
169	/* advance commands */
170	strcpy(mybuf, cp);
171	return(1);
172	}