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File: [cvs.NetBSD.org] / src / lib / libc / nls / catgets.c (download)

Revision 1.19, Mon Jun 25 22:32:45 2012 UTC (8 years, 3 months ago) by abs
Branch: MAIN
CVS Tags: yamt-pagecache-base9, yamt-pagecache-base8, yamt-pagecache-base7, yamt-pagecache-base6, tls-maxphys-base, tls-maxphys, tls-earlyentropy-base, tls-earlyentropy, riastradh-xf86-video-intel-2-7-1-pre-2-21-15, riastradh-drm2-base3, riastradh-drm2-base2, riastradh-drm2-base1, riastradh-drm2-base, riastradh-drm2, prg-localcount2-base3, prg-localcount2-base2, prg-localcount2-base1, prg-localcount2-base, prg-localcount2, phil-wifi-base, phil-wifi-20200421, phil-wifi-20200411, phil-wifi-20200406, phil-wifi-20191119, phil-wifi-20190609, phil-wifi, pgoyette-localcount-base, pgoyette-localcount-20170426, pgoyette-localcount-20170320, pgoyette-localcount-20170107, pgoyette-localcount-20161104, pgoyette-localcount-20160806, pgoyette-localcount-20160726, pgoyette-localcount, pgoyette-compat-merge-20190127, pgoyette-compat-base, pgoyette-compat-20190127, pgoyette-compat-20190118, pgoyette-compat-1226, pgoyette-compat-1126, pgoyette-compat-1020, pgoyette-compat-0930, pgoyette-compat-0906, pgoyette-compat-0728, pgoyette-compat-0625, pgoyette-compat-0521, pgoyette-compat-0502, pgoyette-compat-0422, pgoyette-compat-0415, pgoyette-compat-0407, pgoyette-compat-0330, pgoyette-compat-0322, pgoyette-compat-0315, pgoyette-compat, perseant-stdc-iso10646-base, perseant-stdc-iso10646, netbsd-9-base, netbsd-9-1-RELEASE, netbsd-9-0-RELEASE, netbsd-9-0-RC2, netbsd-9-0-RC1, netbsd-9, netbsd-8-base, netbsd-8-2-RELEASE, netbsd-8-1-RELEASE, netbsd-8-1-RC1, netbsd-8-0-RELEASE, netbsd-8-0-RC2, netbsd-8-0-RC1, netbsd-8, netbsd-7-nhusb-base-20170116, netbsd-7-nhusb-base, netbsd-7-nhusb, netbsd-7-base, netbsd-7-2-RELEASE, netbsd-7-1-RELEASE, netbsd-7-1-RC2, netbsd-7-1-RC1, netbsd-7-1-2-RELEASE, netbsd-7-1-1-RELEASE, netbsd-7-1, netbsd-7-0-RELEASE, netbsd-7-0-RC3, netbsd-7-0-RC2, netbsd-7-0-RC1, netbsd-7-0-2-RELEASE, netbsd-7-0-1-RELEASE, netbsd-7-0, netbsd-7, matt-nb8-mediatek-base, matt-nb8-mediatek, localcount-20160914, is-mlppp-base, is-mlppp, bouyer-socketcan-base1, bouyer-socketcan-base, bouyer-socketcan, agc-symver-base, agc-symver, HEAD
Changes since 1.18: +3 -7 lines

Update old-style definitions to ANSI, remove a couple of register
definitions along the way. Fixed gcc 4.1 build (thank you vax)

/*	$NetBSD: catgets.c,v 1.19 2012/06/25 22:32:45 abs Exp $	*/

/*-
 * Copyright (c) 1996 The NetBSD Foundation, Inc.
 * All rights reserved.
 *
 * This code is derived from software contributed to The NetBSD Foundation
 * by J.T. Conklin.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 
 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */

#include <sys/cdefs.h>
#if defined(LIBC_SCCS) && !defined(lint)
__RCSID("$NetBSD: catgets.c,v 1.19 2012/06/25 22:32:45 abs Exp $");
#endif /* LIBC_SCCS and not lint */

#define _NLS_PRIVATE

#include "namespace.h"
#include <errno.h>
#include <stdlib.h>
#include <string.h>
#include <nl_types.h>

#ifdef __weak_alias
__weak_alias(catgets, _catgets)
#endif

char *
_catgets(nl_catd catd, int set_id, int msg_id, const char *s)
{
	struct _nls_cat_hdr *cat_hdr;
	struct _nls_set_hdr *set_hdr;
	struct _nls_msg_hdr *msg_hdr;
	int l, u, i, r;

	if (catd == (nl_catd) -1) {
		errno = EBADF;
		return __UNCONST(s);
	}

	cat_hdr = (struct _nls_cat_hdr *)catd->__data; 
	set_hdr = (struct _nls_set_hdr *)(void *)((char *)catd->__data
		+ sizeof(struct _nls_cat_hdr));

	/* binary search, see knuth algorithm b */
	l = 0;
	u = ntohl((u_int32_t)cat_hdr->__nsets) - 1;
	while (l <= u) {
		i = (l + u) / 2;
		r = set_id - ntohl((u_int32_t)set_hdr[i].__setno);

		if (r == 0) {
			msg_hdr = (struct _nls_msg_hdr *)
			    (void *)((char *)catd->__data +
			    sizeof(struct _nls_cat_hdr) +
			    ntohl((u_int32_t)cat_hdr->__msg_hdr_offset));

			l = ntohl((u_int32_t)set_hdr[i].__index);
			u = l + ntohl((u_int32_t)set_hdr[i].__nmsgs) - 1;
			while (l <= u) {
				i = (l + u) / 2;
				r = msg_id -
				    ntohl((u_int32_t)msg_hdr[i].__msgno);
				if (r == 0) {
					return ((char *) catd->__data +
					    sizeof(struct _nls_cat_hdr) +
					    ntohl((u_int32_t)
					    cat_hdr->__msg_txt_offset) +
					    ntohl((u_int32_t)
					    msg_hdr[i].__offset));
				} else if (r < 0) {
					u = i - 1;
				} else {
					l = i + 1;
				}
			}

			/* not found */
			goto notfound;

		} else if (r < 0) {
			u = i - 1;
		} else {
			l = i + 1;
		}
	}

notfound:
	/* not found */
	errno = ENOMSG;
	return __UNCONST(s);
}