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      1 /*	$NetBSD: gettext.c,v 1.3 2015/07/12 11:40:52 christos Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 2015 William Orr <will (at) worrbase.com>
      5  * All rights reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer in the
     14  *    documentation and/or other materials provided with the distribution.
     15  *
     16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
     17  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     19  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
     20  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     21  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     22  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     23  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     24  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     25  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     26  * SUCH DAMAGE.
     27  */
     28 #include <sys/cdefs.h>
     29 __RCSID("$NetBSD: gettext.c,v 1.3 2015/07/12 11:40:52 christos Exp $");
     30 
     31 #include <err.h>
     32 #include <errno.h>
     33 #include <getopt.h>
     34 #include <libintl.h>
     35 #include <locale.h>
     36 #include <stdbool.h>
     37 #include <stdio.h>
     38 #include <stdlib.h>
     39 #include <string.h>
     40 #include <util.h>
     41 
     42 static struct option longopts[] = {
     43 	{ "help",       no_argument,        NULL,   'h' },
     44 	{ "domain",	required_argument,  NULL,   'd' },
     45 	{ NULL,         0,                  NULL,   '\0' },
     46 };
     47 
     48 static __dead void
     49 usage(int exit_status)
     50 {
     51 
     52 	fprintf(stderr, "Usage: %s [-ehn] [[<textdomain>] <msgid>]\n",
     53 	    getprogname());
     54 	fprintf(stderr, "Usage: %s [-ehn] -d <textdomain> <msgid>\n",
     55 	    getprogname());
     56 	fprintf(stderr, "Usage: %s -s [<msgid>]...\n", getprogname());
     57 	exit(exit_status);
     58 }
     59 
     60 static bool
     61 expand(char *str)
     62 {
     63 	char *fp, *sp, ch, pl;
     64 	bool nflag = false;
     65 
     66 	for (fp = str, sp = str; *fp != 0;) {
     67 		if (*fp == '\\') {
     68 			switch (*++fp) {
     69 			case 'a':
     70 				*sp++ = '\a';
     71 				fp++;
     72 				break;
     73 			case 'b':
     74 				*sp++ = '\b';
     75 				fp++;
     76 				break;
     77 			case 'c':
     78 				nflag = true;
     79 				fp++;
     80 				break;
     81 			case 'f':
     82 				*sp++ = '\f';
     83 				fp++;
     84 				break;
     85 			case 'n':
     86 				*sp++ = '\n';
     87 				fp++;
     88 				break;
     89 			case 'r':
     90 				*sp++ = '\r';
     91 				fp++;
     92 				break;
     93 			case 't':
     94 				*sp++ = '\t';
     95 				fp++;
     96 				break;
     97 			case 'v':
     98 				*sp++ = '\v';
     99 				fp++;
    100 				break;
    101 			case '\\':
    102 				*sp++ = '\\';
    103 				fp++;
    104 				break;
    105 			case '0':
    106 			case '1':
    107 			case '2':
    108 			case '3':
    109 			case '4':
    110 			case '5':
    111 			case '6':
    112 			case '7':
    113 				ch = *fp++ - '0';
    114 				pl = 0;
    115 				while (*fp >= '0' && *fp <= '7' && pl < 2) {
    116 					ch *= 8;
    117 					ch += *fp++ - '0';
    118 					pl++;
    119 				}
    120 
    121 				*sp++ = ch;
    122 				break;
    123 			default:
    124 				*sp++ = '\\';
    125 				break;
    126 			}
    127 			continue;
    128 		}
    129 		*sp++ = *fp++;
    130 	}
    131 
    132 	*sp = '\0';
    133 	return nflag;
    134 }
    135 
    136 int
    137 main(int argc, char **argv)
    138 {
    139 	char *msgdomain = NULL;
    140 	char *msgdomaindir = NULL;
    141 	char *translation = NULL;
    142 	char *s;
    143 	bool eflag = false;
    144 	bool sflag = false;
    145 	bool nflag = false;
    146 	int ch;
    147 
    148 	setlocale(LC_ALL, "");
    149 	setprogname(argv[0]);
    150 
    151 	while ((ch = getopt_long(argc, argv, "d:eEhnsV", longopts, NULL)) != -1)
    152 	{
    153 		switch (ch) {
    154 		case 'd':
    155 			msgdomain = estrdup(optarg);
    156 			break;
    157 		case 'E':
    158 			/* GNU gettext compat */
    159 			break;
    160 		case 'e':
    161 			eflag = true;
    162 			break;
    163 		case 'V':
    164 		case 'h':
    165 			free(msgdomain);
    166 			usage(EXIT_SUCCESS);
    167 			/* NOTREACHED */
    168 		case 'n':
    169 			nflag = true;
    170 			break;
    171 		case 's':
    172 			sflag = true;
    173 			break;
    174 		default:
    175 			free(msgdomain);
    176 			usage(EXIT_FAILURE);
    177 			/* NOTREACHED */
    178 		}
    179 	}
    180 	argc -= optind;
    181 	argv += optind;
    182 
    183 	if (argc == 0) {
    184 		free(msgdomain);
    185 		warnx("missing msgid");
    186 		usage(EXIT_FAILURE);
    187 	}
    188 
    189 	/* msgdomain can be passed as optional arg iff -s is not passed */
    190 	if (!sflag) {
    191 		if (argc == 2) {
    192 			free(msgdomain);
    193 			msgdomain = estrdup(argv[0]);
    194 
    195 			argc -= 1;
    196 			argv += 1;
    197 		} else if (argc > 2) {
    198 			warnx("too many arguments");
    199 			usage(EXIT_FAILURE);
    200 		}
    201 	}
    202 
    203 	/* msgdomain can be passed as env var */
    204 	if (msgdomain == NULL) {
    205 		if ((s = getenv("TEXTDOMAIN")) != NULL)
    206 			msgdomain = estrdup(s);
    207 	}
    208 
    209 	if (msgdomain != NULL) {
    210 		if ((s = getenv("TEXTDOMAINDIR")) != NULL)
    211 			msgdomaindir = estrdup(s);
    212 		if (msgdomaindir)
    213 			bindtextdomain(msgdomain, msgdomaindir);
    214 	}
    215 
    216 	do {
    217 		if (eflag)
    218 			nflag |= expand(*argv);
    219 
    220 		translation = dgettext(msgdomain, argv[0]);
    221 		printf("%s", translation);
    222 
    223 		argc--;
    224 		argv++;
    225 		if (argc)
    226 			printf(" ");
    227 	} while (sflag && argc != 0);
    228 
    229 	if (sflag && !nflag)
    230 		printf("\n");
    231 
    232 	free(msgdomain);
    233 	free(msgdomaindir);
    234 
    235 	return EXIT_SUCCESS;
    236 }
    237