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361 lines
9.6 KiB
C
361 lines
9.6 KiB
C
/* Copyright (C) 1995-1999, 2000, 2001 Free Software Foundation, Inc.
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Contributed by Ulrich Drepper <drepper@gnu.ai.mit.edu>, 1995.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software Foundation,
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Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
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/* Tell glibc's <string.h> to provide a prototype for mempcpy().
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This must come before <config.h> because <config.h> may include
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<features.h>, and once <features.h> has been included, it's too late. */
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#ifndef _GNU_SOURCE
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#define _GNU_SOURCE 1
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#endif
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <string.h>
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#include <ctype.h>
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#include <sys/types.h>
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#include <stdlib.h>
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#include "elinks.h"
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#include "intl/gettext/loadinfo.h"
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#include "util/string.h"
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/* Awful hack to permit compilation under cygwin and its broken configure.
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* Configure script detects these functions, but compilation clashes on
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* implicit declarations of them... So we force use of internal ones.
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* Cygwin argz.h do not contain any declaration for these, nor any other
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* header while they are available in some linked libs.
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* Feel free to provide a better fix if any. --Zas */
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#ifdef HAVE_SYS_CYGWIN_H
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#undef HAVE___ARGZ_STRINGIFY
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#undef HAVE___ARGZ_COUNT
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#undef HAVE___ARGZ_NEXT
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#else
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#if defined HAVE_ARGZ_H
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#include <argz.h>
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#endif
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#endif
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/* On some strange systems still no definition of NULL is found. Sigh! */
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#ifndef NULL
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#if defined __STDC__ && __STDC__
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#define NULL ((void *) 0)
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#else
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#define NULL 0
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#endif
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#endif
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/* Define function which are usually not available. */
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#if !defined HAVE___ARGZ_COUNT
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/* Returns the number of strings in ARGZ. */
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static size_t argz_count__(const unsigned char *argz, size_t len);
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static size_t
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argz_count__(const unsigned char *argz, size_t len)
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{
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size_t count = 0;
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while (len > 0) {
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size_t part_len = strlen(argz);
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argz += part_len + 1;
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len -= part_len + 1;
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count++;
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}
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return count;
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}
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#undef __argz_count
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#define __argz_count(argz, len) argz_count__ (argz, len)
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#endif /* !HAVE___ARGZ_COUNT */
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#if !defined HAVE___ARGZ_STRINGIFY
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/* Make '\0' separated arg vector ARGZ printable by converting all the '\0's
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except the last into the character SEP. */
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static void argz_stringify__(unsigned char *argz, size_t len, int sep);
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static void
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argz_stringify__(unsigned char *argz, size_t len, int sep)
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{
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while (len > 0) {
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size_t part_len = strlen(argz);
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argz += part_len;
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len -= part_len + 1;
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if (len > 0)
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*argz++ = sep;
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}
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}
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#undef __argz_stringify
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#define __argz_stringify(argz, len, sep) argz_stringify__ (argz, len, sep)
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#endif /* !HAVE___ARGZ_STRINGIFY */
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#if !defined HAVE___ARGZ_NEXT
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static unsigned char *argz_next__(unsigned char *argz, size_t argz_len,
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const unsigned char *entry);
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static unsigned char *
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argz_next__(unsigned char *argz, size_t argz_len, const unsigned char *entry)
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{
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if (entry) {
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if (entry < argz + argz_len)
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entry = strchr(entry, '\0') + 1;
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return entry >= argz + argz_len ? NULL : (unsigned char *) entry;
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} else if (argz_len > 0)
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return argz;
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else
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return 0;
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}
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#undef __argz_next
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#define __argz_next(argz, len, entry) argz_next__ (argz, len, entry)
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#endif /* !HAVE___ARGZ_NEXT */
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/* Return number of bits set in X. */
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static inline int
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pop(int x)
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{
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/* We assume that no more than 16 bits are used. */
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x = ((x & ~0x5555) >> 1) + (x & 0x5555);
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x = ((x & ~0x3333) >> 2) + (x & 0x3333);
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x = ((x >> 4) + x) & 0x0f0f;
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x = ((x >> 8) + x) & 0xff;
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return x;
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}
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struct loaded_l10nfile *
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_nl_make_l10nflist(struct loaded_l10nfile **l10nfile_list,
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const unsigned char *dirlist,
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size_t dirlist_len,
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int mask,
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const unsigned char *language,
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const unsigned char *territory,
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const unsigned char *codeset,
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const unsigned char *normalized_codeset,
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const unsigned char *modifier,
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const unsigned char *special,
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const unsigned char *sponsor,
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const unsigned char *revision,
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const unsigned char *filename,
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int do_allocate)
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{
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unsigned char *abs_filename, *abs_langdirname;
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int abs_langdirnamelen;
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struct loaded_l10nfile *last = NULL;
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struct loaded_l10nfile *retval;
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unsigned char *cp;
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size_t entries;
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int cnt;
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/* Allocate room for the full file name. */
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abs_filename = (unsigned char *) malloc(dirlist_len + strlen(language)
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+ ((mask & TERRITORY) != 0
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? strlen(territory) + 1 : 0)
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+ ((mask & XPG_CODESET) != 0
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? strlen(codeset) + 1 : 0)
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+ ((mask & XPG_NORM_CODESET) != 0
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? strlen(normalized_codeset) + 1 : 0)
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+ (((mask & XPG_MODIFIER) != 0
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|| (mask & CEN_AUDIENCE) != 0)
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? strlen(modifier) + 1 : 0)
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+ ((mask & CEN_SPECIAL) != 0
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? strlen(special) + 1 : 0)
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+ (((mask & CEN_SPONSOR) != 0
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|| (mask & CEN_REVISION) != 0)
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? (1 + ((mask & CEN_SPONSOR) != 0
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? strlen(sponsor) + 1 : 0)
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+ ((mask & CEN_REVISION) != 0
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? strlen(revision) +
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1 : 0)) : 0)
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+ 1 + strlen(filename) + 1);
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if (abs_filename == NULL)
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return NULL;
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retval = NULL;
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last = NULL;
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/* Construct file name. */
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memcpy(abs_filename, dirlist, dirlist_len);
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__argz_stringify(abs_filename, dirlist_len, PATH_SEPARATOR);
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cp = abs_filename + (dirlist_len - 1);
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*cp++ = '/';
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abs_langdirname = cp;
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cp = stpcpy(cp, language);
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if ((mask & TERRITORY) != 0) {
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*cp++ = '_';
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cp = stpcpy(cp, territory);
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}
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if ((mask & XPG_CODESET) != 0) {
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*cp++ = '.';
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cp = stpcpy(cp, codeset);
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}
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if ((mask & XPG_NORM_CODESET) != 0) {
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*cp++ = '.';
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cp = stpcpy(cp, normalized_codeset);
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}
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if ((mask & (XPG_MODIFIER | CEN_AUDIENCE)) != 0) {
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/* This component can be part of both syntaces but has different
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leading characters. For CEN we use `+', else `@'. */
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*cp++ = (mask & CEN_AUDIENCE) != 0 ? '+' : '@';
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cp = stpcpy(cp, modifier);
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}
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if ((mask & CEN_SPECIAL) != 0) {
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*cp++ = '+';
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cp = stpcpy(cp, special);
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}
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if ((mask & (CEN_SPONSOR | CEN_REVISION)) != 0) {
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*cp++ = ',';
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if ((mask & CEN_SPONSOR) != 0)
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cp = stpcpy(cp, sponsor);
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if ((mask & CEN_REVISION) != 0) {
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*cp++ = '_';
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cp = stpcpy(cp, revision);
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}
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}
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abs_langdirnamelen = cp - abs_langdirname;
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*cp++ = '/';
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stpcpy(cp, filename);
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/* Look in list of already loaded domains whether it is already
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available. */
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last = NULL;
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for (retval = *l10nfile_list; retval != NULL; retval = retval->next)
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if (retval->filename != NULL) {
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int compare = strcmp(retval->filename, abs_filename);
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if (compare == 0)
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/* We found it! */
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break;
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if (compare < 0) {
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/* It's not in the list. */
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retval = NULL;
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break;
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}
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last = retval;
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}
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if (retval != NULL || do_allocate == 0) {
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free(abs_filename);
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return retval;
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}
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retval = (struct loaded_l10nfile *)
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malloc(sizeof(*retval) + (__argz_count(dirlist, dirlist_len)
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* (1 << pop(mask))
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* sizeof(struct loaded_l10nfile *)));
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if (retval == NULL)
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return NULL;
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retval->filename = abs_filename;
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retval->langdirname = abs_langdirname;
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retval->langdirnamelen = abs_langdirnamelen;
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retval->decided = (__argz_count(dirlist, dirlist_len) != 1
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|| ((mask & XPG_CODESET) != 0
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&& (mask & XPG_NORM_CODESET) != 0));
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retval->data = NULL;
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if (last == NULL) {
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retval->next = *l10nfile_list;
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*l10nfile_list = retval;
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} else {
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retval->next = last->next;
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last->next = retval;
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}
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entries = 0;
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/* If the DIRLIST is a real list the RETVAL entry corresponds not to
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a real file. So we have to use the DIRLIST separation mechanism
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of the inner loop. */
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cnt = __argz_count(dirlist, dirlist_len) == 1 ? mask - 1 : mask;
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for (; cnt >= 0; --cnt)
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if ((cnt & ~mask) == 0
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&& ((cnt & CEN_SPECIFIC) == 0 || (cnt & XPG_SPECIFIC) == 0)
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&& ((cnt & XPG_CODESET) == 0
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|| (cnt & XPG_NORM_CODESET) == 0)) {
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/* Iterate over all elements of the DIRLIST. */
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unsigned char *dir = NULL;
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while ((dir =
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__argz_next((unsigned char *) dirlist, dirlist_len, dir))
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!= NULL)
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retval->successor[entries++]
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= _nl_make_l10nflist(l10nfile_list, dir,
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strlen(dir) + 1,
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cnt, language,
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territory, codeset,
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normalized_codeset,
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modifier, special,
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sponsor, revision,
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filename, 1);
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}
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retval->successor[entries] = NULL;
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return retval;
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}
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/* Normalize codeset name. There is no standard for the codeset
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names. Normalization allows the user to use any of the common
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names. The return value is dynamically allocated and has to be
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freed by the caller. */
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const unsigned char *
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_nl_normalize_codeset(const unsigned char *codeset, size_t name_len)
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{
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int len = 0;
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int only_digit = 1;
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unsigned char *retval;
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unsigned char *wp;
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size_t cnt;
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for (cnt = 0; cnt < name_len; ++cnt)
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if (isalnum(codeset[cnt])) {
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++len;
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if (isalpha(codeset[cnt]))
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only_digit = 0;
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}
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retval = (unsigned char *) malloc((only_digit ? 3 : 0) + len + 1);
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if (retval != NULL) {
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if (only_digit)
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wp = stpcpy(retval, "iso");
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else
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wp = retval;
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for (cnt = 0; cnt < name_len; ++cnt)
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if (isalpha(codeset[cnt]))
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*wp++ = tolower(codeset[cnt]);
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else if (isdigit(codeset[cnt]))
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*wp++ = codeset[cnt];
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*wp = '\0';
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}
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return (const unsigned char *) retval;
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}
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