/* Implementation of the internal dcigettext function.   Copyright (C) 1995-1999, 2000, 2001 Free Software Foundation, Inc.   This program is free software; you can redistribute it and/or modify it   under the terms of the GNU Library 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   Library General Public License for more details.   You should have received a copy of the GNU Library 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.  *//* Tell glibc's <string.h> to provide a prototype for mempcpy().   This must come before <config.h> because <config.h> may include   <features.h>, and once <features.h> has been included, it's too late.  */#ifndef _GNU_SOURCE# define _GNU_SOURCE	1#endif#ifdef HAVE_CONFIG_H# include <config.h>#endif#include <sys/types.h>#ifdef __GNUC__# define alloca __builtin_alloca# define HAVE_ALLOCA 1#else# if defined HAVE_ALLOCA_H || defined _LIBC#  include <alloca.h># else#  ifdef _AIX #pragma alloca#  else#   ifndef allocachar *alloca ();#   endif#  endif# endif#endif#include <errno.h>#ifndef errnoextern int errno;#endif#ifndef __set_errno# define __set_errno(val) errno = (val)#endif#include <stddef.h>#include <stdlib.h>#include <string.h>#if !HAVE_STRCHR && !defined _LIBC# ifndef strchr#include <strings.h>#  define strchr index# endif#endif#if defined HAVE_UNISTD_H || defined _LIBC# include <unistd.h>#endif#include <locale.h>#if defined HAVE_SYS_PARAM_H || defined _LIBC# include <sys/param.h>#endif#include "gettextP.h"#ifdef _LIBC# include <libintl.h>#else# include "libgnuintl.h"#endif#include "hash-string.h"/* Thread safetyness.  */#ifdef _LIBC# include <bits/libc-lock.h>#else/* Provide dummy implementation if this is outside glibc.  */# define __libc_lock_define_initialized(CLASS, NAME)# define __libc_lock_lock(NAME)# define __libc_lock_unlock(NAME)# define __libc_rwlock_define_initialized(CLASS, NAME)# define __libc_rwlock_rdlock(NAME)# define __libc_rwlock_unlock(NAME)#endif/* Alignment of types.  */#if defined __GNUC__ && __GNUC__ >= 2# define alignof(TYPE) __alignof__ (TYPE)#else# define alignof(TYPE) \    ((int) &((struct { char dummy1; TYPE dummy2; } *) 0)->dummy2)#endif/* The internal variables in the standalone libintl.a must have different   names than the internal variables in GNU libc, otherwise programs   using libintl.a cannot be linked statically.  */#if !defined _LIBC# define _nl_default_default_domain _nl_default_default_domain__# define _nl_current_default_domain _nl_current_default_domain__# define _nl_default_dirname _nl_default_dirname__# define _nl_domain_bindings _nl_domain_bindings__#endif/* Some compilers, like SunOS4 cc, don't have offsetof in <stddef.h>.  */#ifndef offsetof# define offsetof(type,ident) ((size_t)&(((type*)0)->ident))#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.  */# define getcwd __getcwd# ifndef stpcpy#  define stpcpy __stpcpy# endif# define tfind __tfind#else# if !defined HAVE_GETCWDchar *getwd ();#  define getcwd(buf, max) getwd (buf)# elsechar *getcwd ();# endif# ifndef HAVE_STPCPYstatic char *stpcpy PARAMS ((char *dest, const char *src));# endif# ifndef HAVE_MEMPCPYstatic void *mempcpy PARAMS ((void *dest, const void *src, size_t n));# endif#endif/* Amount to increase buffer size by in each try.  */#define PATH_INCR 32/* The following is from pathmax.h.  *//* Non-POSIX BSD systems might have gcc's limits.h, which doesn't define   PATH_MAX but might cause redefinition warnings when sys/param.h is   later included (as on MORE/BSD 4.3).  */#if defined _POSIX_VERSION || (defined HAVE_LIMITS_H && !defined __GNUC__)# include <limits.h>#endif#ifndef _POSIX_PATH_MAX# define _POSIX_PATH_MAX 255#endif#if !defined PATH_MAX && defined _PC_PATH_MAX# define PATH_MAX (pathconf ("/", _PC_PATH_MAX) < 1 ? 1024 : pathconf ("/", _PC_PATH_MAX))#endif/* Don't include sys/param.h if it already has been.  */#if defined HAVE_SYS_PARAM_H && !defined PATH_MAX && !defined MAXPATHLEN# include <sys/param.h>#endif#if !defined PATH_MAX && defined MAXPATHLEN# define PATH_MAX MAXPATHLEN#endif#ifndef PATH_MAX# define PATH_MAX _POSIX_PATH_MAX#endif/* Pathname support.   ISSLASH(C)           tests whether C is a directory separator character.   IS_ABSOLUTE_PATH(P)  tests whether P is an absolute path.  If it is not,                        it may be concatenated to a directory pathname.   IS_PATH_WITH_DIR(P)  tests whether P contains a directory specification. */#if defined _WIN32 || defined __WIN32__ || defined __EMX__ || defined __DJGPP__  /* Win32, OS/2, DOS */# define ISSLASH(C) ((C) == '/' || (C) == '\\')# define HAS_DEVICE(P) \    ((((P)[0] >= 'A' && (P)[0] <= 'Z') || ((P)[0] >= 'a' && (P)[0] <= 'z')) \     && (P)[1] == ':')# define IS_ABSOLUTE_PATH(P) (ISSLASH ((P)[0]) || HAS_DEVICE (P))# define IS_PATH_WITH_DIR(P) \    (strchr (P, '/') != NULL || strchr (P, '\\') != NULL || HAS_DEVICE (P))#else  /* Unix */# define ISSLASH(C) ((C) == '/')# define IS_ABSOLUTE_PATH(P) ISSLASH ((P)[0])# define IS_PATH_WITH_DIR(P) (strchr (P, '/') != NULL)#endif/* XPG3 defines the result of `setlocale (category, NULL)' as:   ``Directs `setlocale()' to query `category' and return the current     setting of `local'.''   However it does not specify the exact format.  Neither do SUSV2 and   ISO C 99.  So we can use this feature only on selected systems (e.g.   those using GNU C Library).  */#if defined _LIBC || (defined __GNU_LIBRARY__ && __GNU_LIBRARY__ >= 2)# define HAVE_LOCALE_NULL#endif/* This is the type used for the search tree where known translations   are stored.  */struct known_translation_t{  /* Domain in which to search.  */  char *domainname;  /* The category.  */  int category;  /* State of the catalog counter at the point the string was found.  */  int counter;  /* Catalog where the string was found.  */  struct loaded_l10nfile *domain;  /* And finally the translation.  */  const char *translation;  size_t translation_length;  /* Pointer to the string in question.  */  char msgid[ZERO];};/* Root of the search tree with known translations.  We can use this   only if the system provides the `tsearch' function family.  */#if defined HAVE_TSEARCH || defined _LIBC# include <search.h>static void *root;# ifdef _LIBC#  define tsearch __tsearch# endif/* Function to compare two entries in the table of known translations.  */static int transcmp PARAMS ((const void *p1, const void *p2));static inttranscmp (p1, p2)     const void *p1;     const void *p2;{  const struct known_translation_t *s1;  const struct known_translation_t *s2;  int result;  s1 = (const struct known_translation_t *) p1;  s2 = (const struct known_translation_t *) p2;  result = strcmp (s1->msgid, s2->msgid);  if (result == 0)    {      result = strcmp (s1->domainname, s2->domainname);      if (result == 0)	/* We compare the category last (though this is the cheapest	   operation) since it is hopefully always the same (namely	   LC_MESSAGES).  */	result = s1->category - s2->category;    }  return result;}#endif/* Name of the default domain used for gettext(3) prior any call to   textdomain(3).  The default value for this is "messages".  */const char _nl_default_default_domain[] = "messages";/* Value used as the default domain for gettext(3).  */const char *_nl_current_default_domain = _nl_default_default_domain;/* Contains the default location of the message catalogs.  */const char _nl_default_dirname[] = LOCALEDIR;/* List with bindings of specific domains created by bindtextdomain()   calls.  */struct binding *_nl_domain_bindings;/* Prototypes for local functions.  */static char *plural_lookup PARAMS ((struct loaded_l10nfile *domain,				    unsigned long int n,				    const char *translation,				    size_t translation_len))     internal_function;static unsigned long int plural_eval PARAMS ((struct expression *pexp,					      unsigned long int n))     internal_function;static const char *category_to_name PARAMS ((int category)) internal_function;static const char *guess_category_value PARAMS ((int category,						 const char *categoryname))     internal_function;/* For those loosing systems which don't have `alloca' we have to add   some additional code emulating it.  */#ifdef HAVE_ALLOCA/* Nothing has to be done.  */# define ADD_BLOCK(list, address) /* nothing */# define FREE_BLOCKS(list) /* nothing */#elsestruct block_list{  void *address;  struct block_list *next;};# define ADD_BLOCK(list, addr)						      \  do {									      \    struct block_list *newp = (struct block_list *) malloc (sizeof (*newp));  \    /* If we cannot get a free block we cannot add the new element to	      \       the list.  */							      \    if (newp != NULL) {							      \      newp->address = (addr);						      \      newp->next = (list);						      \      (list) = newp;							      \    }									      \  } while (0)# define FREE_BLOCKS(list)						      \  do {									      \    while (list != NULL) {						      \      struct block_list *old = list;					      \      list = list->next;						      \      free (old);							      \    }									      \  } while (0)# undef alloca# define alloca(size) (malloc (size))#endif	/* have alloca */#ifdef _LIBC/* List of blocks allocated for translations.  */typedef struct transmem_list{  struct transmem_list *next;  char data[ZERO];} transmem_block_t;static struct transmem_list *transmem_list;#elsetypedef unsigned char transmem_block_t;#endif/* Names for the libintl functions are a problem.  They must not clash   with existing names and they should follow ANSI C.  But this source   code is also used in GNU C Library where the names have a __   prefix.  So we have to make a difference here.  */#ifdef _LIBC# define DCIGETTEXT __dcigettext#else# define DCIGETTEXT dcigettext__#endif/* Lock variable to protect the global data in the gettext implementation.  */#ifdef _LIBC__libc_rwlock_define_initialized (, _nl_state_lock)#endif/* Checking whether the binaries runs SUID must be done and glibc provides   easier methods therefore we make a difference here.  */#ifdef _LIBC# define ENABLE_SECURE __libc_enable_secure# define DETERMINE_SECURE#else# ifndef HAVE_GETUID#  define getuid() 0# endif# ifndef HAVE_GETGID#  define getgid() 0# endif# ifndef HAVE_GETEUID#  define geteuid() getuid()# endif# ifndef HAVE_GETEGID#  define getegid() getgid()# endifstatic int enable_secure;# define ENABLE_SECURE (enable_secure == 1)# define DETERMINE_SECURE \  if (enable_secure == 0)						      \    {									      \      if (getuid () != geteuid () || getgid () != getegid ())		      \	enable_secure = 1;						      \      else								      \	enable_secure = -1;						      \    }#endif/* Look up MSGID in the DOMAINNAME message catalog for the current   CATEGORY locale and, if PLURAL is nonzero, search over string   depending on the plural form determined by N.  */char *DCIGETTEXT (domainname, msgid1, msgid2, plural, n, category)     const char *domainname;     const char *msgid1;     const char *msgid2;     int plural;     unsigned long int n;     int category;{#ifndef HAVE_ALLOCA  struct block_list *block_list = NULL;#endif  struct loaded_l10nfile *domain;  struct binding *binding;  const char *categoryname;  const char *categoryvalue;  char *dirname, *xdomainname;  char *single_locale;  char *retval;  size_t retlen;