263 lines
6.7 KiB
C
263 lines
6.7 KiB
C
/* Copyright (C) 1995, 1996 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Contributed by Ulrich Drepper <drepper@gnu.ai.mit.edu>, 1995.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public License as
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published by the Free Software Foundation; either version 2 of the
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License, or (at your option) any later version.
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The GNU C Library 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 GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with the GNU C Library; see the file COPYING.LIB. If
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not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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#include <argz.h>
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#include <ctype.h>
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#include <stdlib.h>
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#include <string.h>
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#include "loadinfo.h"
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/* Return number of bits set in X. */
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static int pop __P ((int x));
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static inline int
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pop (x)
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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 (l10nfile_list, dirlist, dirlist_len, mask, language,
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territory, codeset, normalized_codeset, modifier, special,
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sponsor, revision, filename, do_allocate)
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struct loaded_l10nfile **l10nfile_list;
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const char *dirlist;
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size_t dirlist_len;
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int mask;
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const char *language;
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const char *territory;
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const char *codeset;
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const char *normalized_codeset;
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const char *modifier;
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const char *special;
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const char *sponsor;
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const char *revision;
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const char *filename;
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int do_allocate;
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{
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char *abs_filename;
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struct loaded_l10nfile *last = NULL;
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struct loaded_l10nfile *retval;
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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 = (char *) malloc (dirlist_len
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+ 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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? strlen (sponsor) + 1 : 0)
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+ ((mask & CEN_REVISION) != 0
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? strlen (revision) + 1 : 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, ':');
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cp = abs_filename + (dirlist_len - 1);
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*cp++ = '/';
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cp = stpcpy (cp, language);
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if ((mask & TERRITORY) != 0)
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{
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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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{
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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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{
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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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{
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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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{
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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) != 0)
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{
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*cp++ = ',';
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cp = stpcpy (cp, sponsor);
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}
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if ((mask & CEN_REVISION) != 0)
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{
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*cp++ = '_';
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cp = stpcpy (cp, revision);
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}
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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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{
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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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{
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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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{
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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->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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{
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retval->next = *l10nfile_list;
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*l10nfile_list = retval;
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}
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else
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{
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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 correcponds not to
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a real file. So we have to use the DIRLIST separation machanism
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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 || (cnt & XPG_NORM_CODESET) == 0))
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{
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/* Iterate over all elements of the DIRLIST. */
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char *dir = NULL;
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while ((dir = __argz_next ((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, strlen (dir) + 1, cnt,
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language, territory, codeset,
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normalized_codeset, modifier, special,
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sponsor, revision, 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. */
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const char *
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_nl_normalize_codeset (codeset, name_len)
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const char *codeset;
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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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char *retval;
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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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{
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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 = (char *) malloc ((only_digit ? 3 : 0) + len + 1);
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if (retval != NULL)
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{
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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 char *) retval;
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}
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