1 /*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License, Version 1.0 only
6 * (the "License"). You may not use this file except in compliance
7 * with the License.
8 *
9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10 * or http://www.opensolaris.org/os/licensing.
11 * See the License for the specific language governing permissions
12 * and limitations under the License.
13 *
14 * When distributing Covered Code, include this CDDL HEADER in each
15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16 * If applicable, add the following below this CDDL HEADER, with the
17 * fields enclosed by brackets "[]" replaced with your own identifying
18 * information: Portions Copyright [yyyy] [name of copyright owner]
19 *
20 * CDDL HEADER END
21 */
22 /*
23 * Copyright 2004 Sun Microsystems, Inc. All rights reserved.
24 * Use is subject to license terms.
25 */
26
27 /* Copyright (c) 1988 AT&T */
28 /* All Rights Reserved */
29
30 /*
31 * University Copyright- Copyright (c) 1982, 1986, 1988
32 * The Regents of the University of California
33 * All Rights Reserved
34 *
35 * University Acknowledgment- Portions of this document are derived from
36 * software developed by the University of California, Berkeley, and its
37 * contributors.
38 */
39
40 /*
41 Routines to convert terminfo string parameters to termcap form.
42 Not all terminfo strings will be, or could be, converted.
43
44 The following parameter forms will at least be handled.
45
46 %p1%d -> %d
47 %p1%2.2d -> %2
48 %p1%3.3d -> %3
49 %p1%02d -> %2
50 %p1%03d -> %3
51 %p1%c -> %.
52 %p1%'x'%+%c -> %+x
53 %i -> %i
54 %p2 before %p1 -> %r
55 %p1%'x'% > %+%p1%'y'%+%; -> % > xy
56 */
57
58 #include "curses.h"
59
60 /* externs from libc */
61 extern char *strcpy();
62 #if !defined(SYSV) && !defined(USG) && !defined(strchr)
63 /* handle both Sys Vr2 and Vr3 curses */
64 #define strchr index
65 #endif /* SYSV || USG */
66 extern char *strchr();
67
68 #define NULLPTR ((char *) 0)
69
70 /*
71 lookat looks at a string such as "%p1%d" and a pattern such as "%p*%d",
72 where '*' is the only wild character. Each place that the star matches,
73 the corresponding character in the string is placed in args. If the
74 pattern matches the string, 1 is returned.
75 */
76
77 static int
lookat(char * string,char * pattern,char * args)78 lookat(char *string, char *pattern, char *args)
79 {
80 int val, pat;
81
82 while ((pat = *pattern++) && (val = *string++))
83 if (pat == '*')
84 *args++ = val;
85 else if (val != pat)
86 return (0);
87 if (pat == '\0')
88 return (1);
89 else
90 return (0);
91 }
92
93 static int currentparm, otherparm, reversedparms;
94 static char *newvalue;
95 static char _newvalue[1024] = "!!! MUST CHANGE BY HAND !!!";
96 #define BYHANDMSGLEN 27
97
98 static void setparms();
99
100 /*
101 Setparms() and checkparms() are used by infotocap() to make
102 sure that the parameters in the terminfo entry alternate and are
103 only '1' or '2'. If the order has been reversed, then %r is added
104 in to the new value being built.
105 */
106
107 static void
setparms()108 setparms()
109 {
110 currentparm = 1;
111 otherparm = 2;
112 reversedparms = 0;
113 newvalue = &_newvalue[BYHANDMSGLEN];
114 return;
115 }
116
117 static int
checkparms(int arg)118 checkparms(int arg)
119 {
120 arg -= '0';
121 if (arg != 1 && arg != 2)
122 return (1);
123 else if (arg != currentparm)
124 if (reversedparms)
125 return (1);
126 else if (!reversedparms && arg == otherparm) {
127 (void) strcpy(newvalue, "%r");
128 newvalue += 2;
129 reversedparms = TRUE;
130 } else
131 return (1);
132 else {
133 otherparm = currentparm;
134 currentparm = 3 - currentparm;
135 }
136 return (0);
137 }
138
139 /*
140 Infotocap looks at the string capability to see if it has any
141 stack manipulation operators. If possible, they are converted to
142 termcap form. If any operator is found that cannot be modified,
143 prepend a message to the beginning of the original value and
144 set err to 1. A pointer to the new copy of the string is returned
145 in either case.
146 */
147
148 char
infotocap(char * value,int * err)149 *infotocap(char *value, int *err)
150 {
151 char args[4];
152 char *savevalue;
153
154 *err = 0;
155 if (strchr(value, '%') == NULLPTR)
156 return (value);
157
158 setparms();
159
160 savevalue = value;
161 while (*value)
162 if (*value != '%')
163 *newvalue++ = *value++;
164 else if (lookat(value, "%p*%d", args)) {
165 if (checkparms(args[0]))
166 goto dobyhand;
167 (void) strcpy(newvalue, "%d");
168 newvalue += 2;
169 value += 5;
170 } else if (lookat(value, "%p*%02d", args)) {
171 if (checkparms(args[0]))
172 goto dobyhand;
173 (void) strcpy(newvalue, "%2");
174 newvalue += 2;
175 value += 7;
176 } else if (lookat(value, "%p*%03d", args)) {
177 if (checkparms(args[0]))
178 goto dobyhand;
179 (void) strcpy(newvalue, "%3");
180 newvalue += 2;
181 value += 7;
182 } else if (lookat(value, "%p*%2.2d", args)) {
183 if (checkparms(args[0]))
184 goto dobyhand;
185 (void) strcpy(newvalue, "%2");
186 newvalue += 2;
187 value += 8;
188 } else if (lookat(value, "%p*%3.3d", args)) {
189 if (checkparms(args[0]))
190 goto dobyhand;
191 (void) strcpy(newvalue, "%3");
192 newvalue += 2;
193 value += 8;
194 } else if (lookat(value, "%p*%c", args)) {
195 if (checkparms(args[0]))
196 goto dobyhand;
197 (void) strcpy(newvalue, "%.");
198 newvalue += 2;
199 value += 5;
200 } else if (lookat(value, "%p*%'*'%+%c", args)) {
201 if (checkparms(args[0]))
202 goto dobyhand;
203 (void) sprintf(newvalue, "%%+%c", args[1]);
204 newvalue += 3;
205 value += 11;
206 } else if (lookat(value, "%i", args)) {
207 (void) strcpy(newvalue, "%i");
208 newvalue += 2;
209 value += 2;
210 } else if (lookat(value, "%%", args)) {
211 (void) strcpy(newvalue, "%%");
212 newvalue += 2;
213 value += 2;
214 } else if (lookat(value, "p*%'*'%>%+%p*%'*'%+%;", args)) {
215 if (args[0] != args[2])
216 goto dobyhand;
217 if (checkparms(args[0]))
218 goto dobyhand;
219 (void) sprintf(newvalue, "%%>%c%c", args[1], args[3]);
220 newvalue += 2;
221 value += 21;
222 } else
223 goto dobyhand;
224
225 *newvalue = '\0';
226 return (&_newvalue[BYHANDMSGLEN]);
227
228 dobyhand:
229 (void) strcpy(&_newvalue[BYHANDMSGLEN], savevalue);
230 *err = 1;
231 return (_newvalue);
232 }
233