xref: /illumos-gate/usr/src/lib/libxcurses/src/libc/i18n/m_text.c (revision 7c478bd95313f5f23a4c958a745db2134aa03244)
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 (c) 1996, by Sun Microsystems, Inc.
24  * All rights reserved.
25  */
26 
27 #pragma ident	"%Z%%M%	%I%	%E% SMI"
28 
29 /*
30  * MKS interface to XPG message internationalization routines.
31  * Copyright 1989, 1992 by Mortice Kern Systems Inc.  All rights reserved.
32  *
33  * Written by T. J. Thompson
34  */
35 #ifdef M_RCSID
36 #ifndef lint
37 static char rcsID[] = "$Header: /rd/src/libc/i18n/rcs/m_text.c 1.18 1995/02/02 16:42:09 jeffhe Exp $";
38 #endif
39 #endif
40 
41 #define	I18N	1	/* InternaltionalizatioN on */
42 
43 #include <mks.h>
44 #include <locale.h>
45 #include <nl_types.h>
46 #include <stdlib.h>
47 #include <errno.h>
48 #include <string.h>
49 
50 static nl_catd catd = (nl_catd)-1;
51 static char *domain = NULL;	/* remember domain chosen */
52 static char *locale = NULL;	/* remember locale loaded */
53 
54 #ifdef	M_VARIANTS
55 /*f
56  * Note: All the text strings in the messaging database must be stored in
57  * the codeset of the compiled program.  xlate will convert from that codeset,
58  * into that of the user.
59  */
60 static char *
61 xlate(char *s)
62 {
63 	char *new = strdup(s);
64 	static char *lastmsg;
65 
66 	/* No memory? Return untranslated string */
67 	if (new == NULL)
68 		return s;
69 	/* Free previour string */
70 	if (lastmsg != NULL)
71 		free(lastmsg);
72 	lastmsg = new;
73 
74 	/* Do *not* translate the leading ! which indicates perror */
75 	if (*new == '!')
76 		new++;
77 	/* And translate the string */
78 	M_INVARIANTINIT();
79 	for ( ; *new != '\0'; new++)
80 		*new = M_UNVARIANT(*new);
81 
82 	return lastmsg;
83 }
84 #else
85 #define	xlate(s)	(s)
86 #endif
87 
88 STATIC void
89 textclose()
90 {
91 	m_textdomain(NULL);
92 }
93 
94 void
95 m_textdomain(str)
96 char *str;
97 {
98 	if (catd != (nl_catd)-1)
99 		(void)catclose(catd);
100 	catd = (nl_catd)-1;
101 	if (domain != NULL)
102 		free(domain);
103 	domain = str==NULL ? NULL : strdup(str);
104 }
105 
106 /*f
107  * Given a message id number, and a default string, call the XPG cat*
108  * functions to look up the message, or return just the default string.
109  */
110 char *
111 m_textmsg(id, str, cls)
112 int id;
113 const char *str;
114 char *cls;	/* NOT USED */
115 {
116 	int errsave = errno;
117 	char *nlocale;
118 	char *cp;
119 
120 	nlocale = setlocale(LC_MESSAGES, NULL);	/* Query current locale */
121 	if (catd == (nl_catd)-1			        /* catalog not open */
122 	||  nlocale == NULL				/* impossible? */
123 	||  locale == NULL				/* locale never set */
124 	||  strcmp(locale, nlocale)!=0) {		/* locale changed */
125 
126 		/* Do not re-try a failed catopen */
127 		if (locale != NULL && nlocale != NULL && domain != NULL
128 		&& strcmp(locale, nlocale) == 0) {
129 			errno = errsave;
130 			return (xlate((char *)str));
131 		}
132 
133 		if (catd != (nl_catd)-1)
134 			(void)catclose(catd);
135 		if (domain==NULL)
136 			m_textdomain(M_NL_DOM);
137 		if (locale != NULL)
138 			free(locale);
139 		locale = nlocale==NULL ? NULL : strdup(nlocale);
140 #ifdef NL_CAT_LOCALE /* XPG4 - April 1992 - not final version! */
141 		if ((catd = catopen(domain, NL_CAT_LOCALE)) == (nl_catd)-1) {
142 #else
143 		if ((catd = catopen(domain, 0)) == (nl_catd)-1) {
144 #endif
145 			errno = errsave;
146 			return (xlate((char *)str));
147 		}
148 		atexit(textclose);
149 	}
150 	cp = catgets(catd, NL_SETD, id, (char *)str);
151 	errno = errsave;
152 	return xlate(cp);
153 }
154