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NetBSD/gnu/dist/grep/intl/l10nflist.c

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Import GNU grep 2.2f
1999-02-09 15:38:36 +03:00
/* 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 '\0' separated arg vector ARGZ printable by converting all the '\0'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, '\0') + 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 = '\0';
}
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++) != '\0')
/* Do nothing. */ ;
return dest - 1;
}
#endif