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

Revision 1.3, Fri Sep 13 13:13:32 2013 UTC (10 years, 6 months ago) by joerg
Branch: MAIN
CVS Tags: yamt-pagecache-base9, tls-maxphys-base, tls-earlyentropy-base, tls-earlyentropy, riastradh-xf86-video-intel-2-7-1-pre-2-21-15, riastradh-drm2-base3, 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-9-3-RELEASE, netbsd-9-2-RELEASE, netbsd-9-1-RELEASE, netbsd-9-0-RELEASE, netbsd-9-0-RC2, netbsd-9-0-RC1, 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-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, netbsd-10-base, matt-nb8-mediatek-base, matt-nb8-mediatek, localcount-20160914, is-mlppp-base, is-mlppp, cjep_sun2x-base1, cjep_sun2x-base, cjep_sun2x, cjep_staticlib_x-base1, cjep_staticlib_x-base, cjep_staticlib_x, bouyer-socketcan-base1, bouyer-socketcan-base, bouyer-socketcan
Branch point for: yamt-pagecache, netbsd-9, netbsd-8, netbsd-10
Changes since 1.2: +6 -2 lines

Redo the locale cache to be constant. It now contains the localeconv()
data and which LC_MONETARY and LC_NUMERIC values it is derived from.
In newlocale(3) and setlocale(3), check for the existing entries and on
miss, create a new entry. This is currently not using a lock for the
list as the worst case is a small memory leak.

/* $NetBSD: newlocale.c,v 1.3 2013/09/13 13:13:32 joerg Exp $ */

/*-
 * Copyright (c)2008, 2011 Citrus Project,
 * All rights reserved.
 *
 * 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 AUTHOR 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 AUTHOR 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>
__RCSID("$NetBSD: newlocale.c,v 1.3 2013/09/13 13:13:32 joerg Exp $");

#include "namespace.h"
#include <assert.h>
#include <errno.h>
#include <locale.h>
#include <stdlib.h>
#include <string.h>

#include "setlocale_local.h"

__weak_alias(newlocale, _newlocale)

locale_t
newlocale(int mask, const char *name, locale_t src)
{
	struct _locale *dst;
	char head[_LOCALENAME_LEN_MAX * (_LC_LAST - 1)], *tail;
	const char *tokens[_LC_LAST - 1];
	_locale_set_t l;
	int i, howmany, categories[_LC_LAST - 1];

	if (name == NULL)
		name = _C_LOCALE;
	dst = malloc(sizeof(*dst));
	if (dst == NULL)
		return (locale_t)NULL;
	if (src == NULL)
		src = _current_locale();
	memcpy(dst, src, sizeof(*src));
	strlcpy(&head[0], name, sizeof(head));
	tokens[0] = (const char *)&head[0];
	tail = strchr(tokens[0], '/');
	if (tail == NULL) {
		for (i = 1; i < _LC_LAST; ++i) {
			if (mask & (1 << i)) {
				l = _find_category(i);
				_DIAGASSERT(l != NULL);
				(*l)(tokens[0], dst);
			}
		}
	} else {
		*tail++ = '\0';
		howmany = 0;
		for (i = 1; i < _LC_LAST; ++i) {
			if (mask & (1 << i))
				categories[howmany++] = i;
		}
		if (howmany-- > 0) {
			for (i = 1; i < howmany; ++i) {
				tokens[i] = (const char *)tail;
				tail = strchr(tokens[i], '/');
				if (tail == NULL) {
					free(dst);
					return NULL;
				}
			}
			tokens[howmany] = tail;
			tail = strchr(tokens[howmany], '/');
			if (tail != NULL) {
				free(dst);
				return NULL;
			}
			for (i = 0; i <= howmany; ++i) {
				l = _find_category(categories[i]);
				_DIAGASSERT(l != NULL);
				(*l)(tokens[i], dst);
			}
		}
	}
	if (_setlocale_cache(dst, NULL)) {
		free(dst);
		return NULL;
	}
	return (locale_t)dst;
}