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ntp 4.2.6p5

    1: /*
    2:  * Copyright (C) 2004, 2005, 2007  Internet Systems Consortium, Inc. ("ISC")
    3:  * Copyright (C) 1999-2001  Internet Software Consortium.
    4:  *
    5:  * Permission to use, copy, modify, and/or distribute this software for any
    6:  * purpose with or without fee is hereby granted, provided that the above
    7:  * copyright notice and this permission notice appear in all copies.
    8:  *
    9:  * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
   10:  * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
   11:  * AND FITNESS.  IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
   12:  * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
   13:  * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
   14:  * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
   15:  * PERFORMANCE OF THIS SOFTWARE.
   16:  */
   17: 
   18: /* $Id: msgcat.c,v 1.1.1.1 2012/05/29 12:08:38 misho Exp $ */
   19: 
   20: /*! \file msgcat.c
   21:  *
   22:  * \author Principal Author: Bob Halley
   23:  */
   24: 
   25: #include <config.h>
   26: 
   27: #include <stddef.h>
   28: #include <stdlib.h>
   29: 
   30: #include <isc/magic.h>
   31: #include <isc/msgcat.h>
   32: #include <isc/util.h>
   33: 
   34: #ifdef HAVE_CATGETS
   35: #include <nl_types.h>		/* Required for nl_catd. */
   36: #endif
   37: 
   38: /*
   39:  * Implementation Notes:
   40:  *
   41:  *	We use malloc() and free() instead of isc_mem_get() and isc_mem_put()
   42:  *	because we don't want to require a memory context to be specified
   43:  *	in order to use a message catalog.
   44:  */
   45: 
   46: struct isc_msgcat {
   47: 	unsigned int	magic;
   48: #ifdef HAVE_CATGETS
   49: 	nl_catd		catalog;
   50: #endif
   51: };
   52: 
   53: #define MSGCAT_MAGIC			ISC_MAGIC('M', 'C', 'a', 't')
   54: #define VALID_MSGCAT(m)			ISC_MAGIC_VALID(m, MSGCAT_MAGIC)
   55: 
   56: void
   57: isc_msgcat_open(const char *name, isc_msgcat_t **msgcatp) {
   58: 	isc_msgcat_t *msgcat;
   59: 
   60: 	/*
   61: 	 * Open a message catalog.
   62: 	 */
   63: 
   64: 	REQUIRE(name != NULL);
   65: 	REQUIRE(msgcatp != NULL && *msgcatp == NULL);
   66: 
   67: 	msgcat = malloc(sizeof(*msgcat));
   68: 	if (msgcat == NULL) {
   69: 		*msgcatp = NULL;
   70: 		return;
   71: 	}
   72: 
   73: #ifdef HAVE_CATGETS
   74: 	/*
   75: 	 * We don't check if catopen() fails because we don't care.
   76: 	 * If it does fail, then when we call catgets(), it will use
   77: 	 * the default string.
   78: 	 */
   79: 	msgcat->catalog = catopen(name, 0);
   80: #endif
   81: 	msgcat->magic = MSGCAT_MAGIC;
   82: 
   83: 	*msgcatp = msgcat;
   84: }
   85: 
   86: void
   87: isc_msgcat_close(isc_msgcat_t **msgcatp) {
   88: 	isc_msgcat_t *msgcat;
   89: 
   90: 	/*
   91: 	 * Close a message catalog.
   92: 	 */
   93: 
   94: 	REQUIRE(msgcatp != NULL);
   95: 	msgcat = *msgcatp;
   96: 	REQUIRE(VALID_MSGCAT(msgcat) || msgcat == NULL);
   97: 
   98: 	if (msgcat != NULL) {
   99: #ifdef HAVE_CATGETS
  100: 		if (msgcat->catalog != (nl_catd)(-1))
  101: 			(void)catclose(msgcat->catalog);
  102: #endif
  103: 		msgcat->magic = 0;
  104: 		free(msgcat);
  105: 	}
  106: 
  107: 	*msgcatp = NULL;
  108: }
  109: 
  110: const char *
  111: isc_msgcat_get(isc_msgcat_t *msgcat, int set, int message,
  112: 	       const char *default_text)
  113: {
  114: 	/*
  115: 	 * Get message 'message' from message set 'set' in 'msgcat'.  If it
  116: 	 * is not available, use 'default'.
  117: 	 */
  118: 
  119: 	REQUIRE(VALID_MSGCAT(msgcat) || msgcat == NULL);
  120: 	REQUIRE(set > 0);
  121: 	REQUIRE(message > 0);
  122: 	REQUIRE(default_text != NULL);
  123: 
  124: #ifdef HAVE_CATGETS
  125: 	if (msgcat == NULL)
  126: 		return (default_text);
  127: 	return (catgets(msgcat->catalog, set, message, default_text));
  128: #else
  129: 	return (default_text);
  130: #endif
  131: }