xref: /onnv-gate/usr/src/lib/libcurses/screen/iexpand.c (revision 0:68f95e015346)
1*0Sstevel@tonic-gate /*
2*0Sstevel@tonic-gate  * CDDL HEADER START
3*0Sstevel@tonic-gate  *
4*0Sstevel@tonic-gate  * The contents of this file are subject to the terms of the
5*0Sstevel@tonic-gate  * Common Development and Distribution License, Version 1.0 only
6*0Sstevel@tonic-gate  * (the "License").  You may not use this file except in compliance
7*0Sstevel@tonic-gate  * with the License.
8*0Sstevel@tonic-gate  *
9*0Sstevel@tonic-gate  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10*0Sstevel@tonic-gate  * or http://www.opensolaris.org/os/licensing.
11*0Sstevel@tonic-gate  * See the License for the specific language governing permissions
12*0Sstevel@tonic-gate  * and limitations under the License.
13*0Sstevel@tonic-gate  *
14*0Sstevel@tonic-gate  * When distributing Covered Code, include this CDDL HEADER in each
15*0Sstevel@tonic-gate  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16*0Sstevel@tonic-gate  * If applicable, add the following below this CDDL HEADER, with the
17*0Sstevel@tonic-gate  * fields enclosed by brackets "[]" replaced with your own identifying
18*0Sstevel@tonic-gate  * information: Portions Copyright [yyyy] [name of copyright owner]
19*0Sstevel@tonic-gate  *
20*0Sstevel@tonic-gate  * CDDL HEADER END
21*0Sstevel@tonic-gate  */
22*0Sstevel@tonic-gate /*
23*0Sstevel@tonic-gate  * Copyright 1997 Sun Microsystems, Inc.  All rights reserved.
24*0Sstevel@tonic-gate  * Use is subject to license terms.
25*0Sstevel@tonic-gate  */
26*0Sstevel@tonic-gate 
27*0Sstevel@tonic-gate /*	Copyright (c) 1988 AT&T	*/
28*0Sstevel@tonic-gate /*	  All Rights Reserved	*/
29*0Sstevel@tonic-gate 
30*0Sstevel@tonic-gate /*
31*0Sstevel@tonic-gate  * University Copyright- Copyright (c) 1982, 1986, 1988
32*0Sstevel@tonic-gate  * The Regents of the University of California
33*0Sstevel@tonic-gate  * All Rights Reserved
34*0Sstevel@tonic-gate  *
35*0Sstevel@tonic-gate  * University Acknowledgment- Portions of this document are derived from
36*0Sstevel@tonic-gate  * software developed by the University of California, Berkeley, and its
37*0Sstevel@tonic-gate  * contributors.
38*0Sstevel@tonic-gate  */
39*0Sstevel@tonic-gate 
40*0Sstevel@tonic-gate #pragma ident	"%Z%%M%	%I%	%E% SMI"
41*0Sstevel@tonic-gate 
42*0Sstevel@tonic-gate /*LINTLIBRARY*/
43*0Sstevel@tonic-gate 
44*0Sstevel@tonic-gate #include <sys/types.h>
45*0Sstevel@tonic-gate #include <stdio.h>
46*0Sstevel@tonic-gate 
47*0Sstevel@tonic-gate /*
48*0Sstevel@tonic-gate  *	Convert a character, making appropriate changes to make it printable
49*0Sstevel@tonic-gate  *	for a terminfo source entry. Change escape to \E, tab to \t, backspace
50*0Sstevel@tonic-gate  *	to \b, formfeed to \f, newline to \n, and return to \r. Change other
51*0Sstevel@tonic-gate  *	control characters into ^X notation. Change meta characters into octal
52*0Sstevel@tonic-gate  *	(\nnn) notation. Also place a backslash in front of commas,
53*0Sstevel@tonic-gate  *	carets(^), and backslashes(\). Return the number of characters printed.
54*0Sstevel@tonic-gate  */
55*0Sstevel@tonic-gate 
56*0Sstevel@tonic-gate #define	BACKSLASH	'\\'
57*0Sstevel@tonic-gate #define	BACKBACK	"\\\\"
58*0Sstevel@tonic-gate 
59*0Sstevel@tonic-gate static char retbuffer[1024];
60*0Sstevel@tonic-gate 
61*0Sstevel@tonic-gate /*
62*0Sstevel@tonic-gate  *  Expand a string taking terminfo sequences into consideration.
63*0Sstevel@tonic-gate  */
64*0Sstevel@tonic-gate char
iexpand(char * string)65*0Sstevel@tonic-gate *iexpand(char *string)
66*0Sstevel@tonic-gate {
67*0Sstevel@tonic-gate 	int	c;
68*0Sstevel@tonic-gate 	char	*retptr = retbuffer;
69*0Sstevel@tonic-gate 
70*0Sstevel@tonic-gate 	retbuffer[0] = '\0';
71*0Sstevel@tonic-gate 	while ((c = *string++) != 0) {
72*0Sstevel@tonic-gate 		/* should check here to make sure that there is enough room */
73*0Sstevel@tonic-gate 		/* in retbuffer and realloc it if necessary. */
74*0Sstevel@tonic-gate 		c &= 0377;
75*0Sstevel@tonic-gate 		/* we ignore the return value from sprintf because BSD/V7 */
76*0Sstevel@tonic-gate 		/* systems return a (char *) rather than an int. */
77*0Sstevel@tonic-gate 		if (c >= 0200) {
78*0Sstevel@tonic-gate 			(void) sprintf(retptr, "\\%.3o", c); retptr += 4; }
79*0Sstevel@tonic-gate 		else if (c == '\033') {
80*0Sstevel@tonic-gate 			(void) sprintf(retptr, "\\E"); retptr += 2; }
81*0Sstevel@tonic-gate 		else if (c == '\t') {
82*0Sstevel@tonic-gate 			(void) sprintf(retptr, "\\t"); retptr += 2; }
83*0Sstevel@tonic-gate 		else if (c == '\b') {
84*0Sstevel@tonic-gate 			(void) sprintf(retptr, "\\b"); retptr += 2; }
85*0Sstevel@tonic-gate 		else if (c == '\f') {
86*0Sstevel@tonic-gate 			(void) sprintf(retptr, "\\f"); retptr += 2; }
87*0Sstevel@tonic-gate 		else if (c == '\n') {
88*0Sstevel@tonic-gate 			(void) sprintf(retptr, "\\n"); retptr += 2; }
89*0Sstevel@tonic-gate 		else if (c == '\r') {
90*0Sstevel@tonic-gate 			(void) sprintf(retptr, "\\r"); retptr += 2; }
91*0Sstevel@tonic-gate 		else if (c == ',') {
92*0Sstevel@tonic-gate 			(void) sprintf(retptr, "\\,"); retptr += 2; }
93*0Sstevel@tonic-gate 		else if (c == '^') {
94*0Sstevel@tonic-gate 			(void) sprintf(retptr, "\\^"); retptr += 2; }
95*0Sstevel@tonic-gate 		else if (c == BACKSLASH) {
96*0Sstevel@tonic-gate 			(void) sprintf(retptr, BACKBACK); retptr += 2; }
97*0Sstevel@tonic-gate 		else if (c == ' ') {
98*0Sstevel@tonic-gate 			(void) sprintf(retptr, "\\s"); retptr += 2; }
99*0Sstevel@tonic-gate 		else if (c < ' ' || c == 0177) {
100*0Sstevel@tonic-gate 			(void) sprintf(retptr, "^%c", c ^ 0100); retptr += 2; }
101*0Sstevel@tonic-gate 		else {
102*0Sstevel@tonic-gate 			(void) sprintf(retptr, "%c", c); retptr++; }
103*0Sstevel@tonic-gate 	}
104*0Sstevel@tonic-gate 	*retptr = '\0';
105*0Sstevel@tonic-gate 	return (retbuffer);
106*0Sstevel@tonic-gate }
107*0Sstevel@tonic-gate 
108*0Sstevel@tonic-gate /*
109*0Sstevel@tonic-gate  *  Print out a string onto a stream, changing unprintables into
110*0Sstevel@tonic-gate  *  terminfo printables.
111*0Sstevel@tonic-gate  */
112*0Sstevel@tonic-gate void
tpr(FILE * stream,char * string)113*0Sstevel@tonic-gate tpr(FILE *stream, char *string)
114*0Sstevel@tonic-gate {
115*0Sstevel@tonic-gate 	if (string != NULL)
116*0Sstevel@tonic-gate 		(void) fprintf(stream, "%s", iexpand(string));
117*0Sstevel@tonic-gate }
118