l10nflist.c
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上传日期:2007-01-04
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文件大小:10k
- /* Handle list of needed message catalogs
- Copyright (C) 1995, 1996, 1997 Free Software Foundation, Inc.
- Contributed by Ulrich Drepper <drepper@gnu.ai.mit.edu>, 1995.
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2, or (at your option)
- any later version.
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
- You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software Foundation,
- Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
- #ifdef HAVE_CONFIG_H
- # include <config.h>
- #endif
- #if defined HAVE_STRING_H || defined _LIBC
- # ifndef _GNU_SOURCE
- # define _GNU_SOURCE 1
- # endif
- # include <string.h>
- #else
- # include <strings.h>
- # ifndef memcpy
- # define memcpy(Dst, Src, Num) bcopy (Src, Dst, Num)
- # endif
- #endif
- #if !HAVE_STRCHR && !defined _LIBC
- # ifndef strchr
- # define strchr index
- # endif
- #endif
- #if defined _LIBC || defined HAVE_ARGZ_H
- # include <argz.h>
- #endif
- #include <ctype.h>
- #include <sys/types.h>
- #if defined STDC_HEADERS || defined _LIBC
- # include <stdlib.h>
- #endif
- #include "loadinfo.h"
- /* On some strange systems still no definition of NULL is found. Sigh! */
- #ifndef NULL
- # if defined __STDC__ && __STDC__
- # define NULL ((void *) 0)
- # else
- # define NULL 0
- # endif
- #endif
- /* @@ end of prolog @@ */
- #ifdef _LIBC
- /* Rename the non ANSI C functions. This is required by the standard
- because some ANSI C functions will require linking with this object
- file and the name space must not be polluted. */
- # ifndef stpcpy
- # define stpcpy(dest, src) __stpcpy(dest, src)
- # endif
- #else
- # ifndef HAVE_STPCPY
- static char *stpcpy PARAMS ((char *dest, const char *src));
- # endif
- #endif
- /* Define function which are usually not available. */
- #if !defined _LIBC && !defined HAVE___ARGZ_COUNT
- /* Returns the number of strings in ARGZ. */
- static size_t argz_count__ PARAMS ((const char *argz, size_t len));
- static size_t
- argz_count__ (argz, len)
- const char *argz;
- size_t len;
- {
- size_t count = 0;
- while (len > 0)
- {
- size_t part_len = strlen (argz);
- argz += part_len + 1;
- len -= part_len + 1;
- count++;
- }
- return count;
- }
- # undef __argz_count
- # define __argz_count(argz, len) argz_count__ (argz, len)
- #endif /* !_LIBC && !HAVE___ARGZ_COUNT */
- #if !defined _LIBC && !defined HAVE___ARGZ_STRINGIFY
- /* Make ' ' separated arg vector ARGZ printable by converting all the ' 's
- except the last into the character SEP. */
- static void argz_stringify__ PARAMS ((char *argz, size_t len, int sep));
- static void
- argz_stringify__ (argz, len, sep)
- char *argz;
- size_t len;
- int sep;
- {
- while (len > 0)
- {
- size_t part_len = strlen (argz);
- argz += part_len;
- len -= part_len + 1;
- if (len > 0)
- *argz++ = sep;
- }
- }
- # undef __argz_stringify
- # define __argz_stringify(argz, len, sep) argz_stringify__ (argz, len, sep)
- #endif /* !_LIBC && !HAVE___ARGZ_STRINGIFY */
- #if !defined _LIBC && !defined HAVE___ARGZ_NEXT
- static char *argz_next__ PARAMS ((char *argz, size_t argz_len,
- const char *entry));
- static char *
- argz_next__ (argz, argz_len, entry)
- char *argz;
- size_t argz_len;
- const char *entry;
- {
- if (entry)
- {
- if (entry < argz + argz_len)
- entry = strchr (entry, ' ') + 1;
- return entry >= argz + argz_len ? NULL : (char *) entry;
- }
- else
- if (argz_len > 0)
- return argz;
- else
- return 0;
- }
- # undef __argz_next
- # define __argz_next(argz, len, entry) argz_next__ (argz, len, entry)
- #endif /* !_LIBC && !HAVE___ARGZ_NEXT */
- /* Return number of bits set in X. */
- static int pop PARAMS ((int x));
- static inline int
- pop (x)
- int x;
- {
- /* We assume that no more than 16 bits are used. */
- x = ((x & ~0x5555) >> 1) + (x & 0x5555);
- x = ((x & ~0x3333) >> 2) + (x & 0x3333);
- x = ((x >> 4) + x) & 0x0f0f;
- x = ((x >> 8) + x) & 0xff;
- return x;
- }
- struct loaded_l10nfile *
- _nl_make_l10nflist (l10nfile_list, dirlist, dirlist_len, mask, language,
- territory, codeset, normalized_codeset, modifier, special,
- sponsor, revision, filename, do_allocate)
- struct loaded_l10nfile **l10nfile_list;
- const char *dirlist;
- size_t dirlist_len;
- int mask;
- const char *language;
- const char *territory;
- const char *codeset;
- const char *normalized_codeset;
- const char *modifier;
- const char *special;
- const char *sponsor;
- const char *revision;
- const char *filename;
- int do_allocate;
- {
- char *abs_filename;
- struct loaded_l10nfile *last = NULL;
- struct loaded_l10nfile *retval;
- char *cp;
- size_t entries;
- int cnt;
- /* Allocate room for the full file name. */
- abs_filename = (char *) malloc (dirlist_len
- + strlen (language)
- + ((mask & TERRITORY) != 0
- ? strlen (territory) + 1 : 0)
- + ((mask & XPG_CODESET) != 0
- ? strlen (codeset) + 1 : 0)
- + ((mask & XPG_NORM_CODESET) != 0
- ? strlen (normalized_codeset) + 1 : 0)
- + (((mask & XPG_MODIFIER) != 0
- || (mask & CEN_AUDIENCE) != 0)
- ? strlen (modifier) + 1 : 0)
- + ((mask & CEN_SPECIAL) != 0
- ? strlen (special) + 1 : 0)
- + (((mask & CEN_SPONSOR) != 0
- || (mask & CEN_REVISION) != 0)
- ? (1 + ((mask & CEN_SPONSOR) != 0
- ? strlen (sponsor) + 1 : 0)
- + ((mask & CEN_REVISION) != 0
- ? strlen (revision) + 1 : 0)) : 0)
- + 1 + strlen (filename) + 1);
- if (abs_filename == NULL)
- return NULL;
- retval = NULL;
- last = NULL;
- /* Construct file name. */
- memcpy (abs_filename, dirlist, dirlist_len);
- __argz_stringify (abs_filename, dirlist_len, ':');
- cp = abs_filename + (dirlist_len - 1);
- *cp++ = '/';
- cp = stpcpy (cp, language);
- if ((mask & TERRITORY) != 0)
- {
- *cp++ = '_';
- cp = stpcpy (cp, territory);
- }
- if ((mask & XPG_CODESET) != 0)
- {
- *cp++ = '.';
- cp = stpcpy (cp, codeset);
- }
- if ((mask & XPG_NORM_CODESET) != 0)
- {
- *cp++ = '.';
- cp = stpcpy (cp, normalized_codeset);
- }
- if ((mask & (XPG_MODIFIER | CEN_AUDIENCE)) != 0)
- {
- /* This component can be part of both syntaces but has different
- leading characters. For CEN we use `+', else `@'. */
- *cp++ = (mask & CEN_AUDIENCE) != 0 ? '+' : '@';
- cp = stpcpy (cp, modifier);
- }
- if ((mask & CEN_SPECIAL) != 0)
- {
- *cp++ = '+';
- cp = stpcpy (cp, special);
- }
- if ((mask & (CEN_SPONSOR | CEN_REVISION)) != 0)
- {
- *cp++ = ',';
- if ((mask & CEN_SPONSOR) != 0)
- cp = stpcpy (cp, sponsor);
- if ((mask & CEN_REVISION) != 0)
- {
- *cp++ = '_';
- cp = stpcpy (cp, revision);
- }
- }
- *cp++ = '/';
- stpcpy (cp, filename);
- /* Look in list of already loaded domains whether it is already
- available. */
- last = NULL;
- for (retval = *l10nfile_list; retval != NULL; retval = retval->next)
- if (retval->filename != NULL)
- {
- int compare = strcmp (retval->filename, abs_filename);
- if (compare == 0)
- /* We found it! */
- break;
- if (compare < 0)
- {
- /* It's not in the list. */
- retval = NULL;
- break;
- }
- last = retval;
- }
- if (retval != NULL || do_allocate == 0)
- {
- free (abs_filename);
- return retval;
- }
- retval = (struct loaded_l10nfile *)
- malloc (sizeof (*retval) + (__argz_count (dirlist, dirlist_len)
- * (1 << pop (mask))
- * sizeof (struct loaded_l10nfile *)));
- if (retval == NULL)
- return NULL;
- retval->filename = abs_filename;
- retval->decided = (__argz_count (dirlist, dirlist_len) != 1
- || ((mask & XPG_CODESET) != 0
- && (mask & XPG_NORM_CODESET) != 0));
- retval->data = NULL;
- if (last == NULL)
- {
- retval->next = *l10nfile_list;
- *l10nfile_list = retval;
- }
- else
- {
- retval->next = last->next;
- last->next = retval;
- }
- entries = 0;
- /* If the DIRLIST is a real list the RETVAL entry corresponds not to
- a real file. So we have to use the DIRLIST separation mechanism
- of the inner loop. */
- cnt = __argz_count (dirlist, dirlist_len) == 1 ? mask - 1 : mask;
- for (; cnt >= 0; --cnt)
- if ((cnt & ~mask) == 0
- && ((cnt & CEN_SPECIFIC) == 0 || (cnt & XPG_SPECIFIC) == 0)
- && ((cnt & XPG_CODESET) == 0 || (cnt & XPG_NORM_CODESET) == 0))
- {
- /* Iterate over all elements of the DIRLIST. */
- char *dir = NULL;
- while ((dir = __argz_next ((char *) dirlist, dirlist_len, dir))
- != NULL)
- retval->successor[entries++]
- = _nl_make_l10nflist (l10nfile_list, dir, strlen (dir) + 1, cnt,
- language, territory, codeset,
- normalized_codeset, modifier, special,
- sponsor, revision, filename, 1);
- }
- retval->successor[entries] = NULL;
- return retval;
- }
- /* Normalize codeset name. There is no standard for the codeset
- names. Normalization allows the user to use any of the common
- names. */
- const char *
- _nl_normalize_codeset (codeset, name_len)
- const unsigned char *codeset;
- size_t name_len;
- {
- int len = 0;
- int only_digit = 1;
- char *retval;
- char *wp;
- size_t cnt;
- for (cnt = 0; cnt < name_len; ++cnt)
- if (isalnum (codeset[cnt]))
- {
- ++len;
- if (isalpha (codeset[cnt]))
- only_digit = 0;
- }
- retval = (char *) malloc ((only_digit ? 3 : 0) + len + 1);
- if (retval != NULL)
- {
- if (only_digit)
- wp = stpcpy (retval, "iso");
- else
- wp = retval;
- for (cnt = 0; cnt < name_len; ++cnt)
- if (isalpha (codeset[cnt]))
- *wp++ = tolower (codeset[cnt]);
- else if (isdigit (codeset[cnt]))
- *wp++ = codeset[cnt];
- *wp = ' ';
- }
- return (const char *) retval;
- }
- /* @@ begin of epilog @@ */
- /* We don't want libintl.a to depend on any other library. So we
- avoid the non-standard function stpcpy. In GNU C Library this
- function is available, though. Also allow the symbol HAVE_STPCPY
- to be defined. */
- #if !_LIBC && !HAVE_STPCPY
- static char *
- stpcpy (dest, src)
- char *dest;
- const char *src;
- {
- while ((*dest++ = *src++) != ' ')
- /* Do nothing. */ ;
- return dest - 1;
- }
- #endif