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Diffstat (limited to 'intl/l10nflist.c')
| -rw-r--r-- | intl/l10nflist.c | 400 |
1 files changed, 400 insertions, 0 deletions
diff --git a/intl/l10nflist.c b/intl/l10nflist.c new file mode 100644 index 0000000..365aeb7 --- /dev/null +++ b/intl/l10nflist.c @@ -0,0 +1,400 @@ +/* Copyright (C) 1995-1999, 2000-2006 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 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, + USA. */ + +/* Tell glibc's <string.h> to provide a prototype for stpcpy(). + 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 <string.h> + +#if defined _LIBC || defined HAVE_ARGZ_H +# include <argz.h> +#endif +#include <ctype.h> +#include <sys/types.h> +#include <stdlib.h> + +#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 (char *dest, const char *src); +# endif +#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. + */ +#if defined _WIN32 || defined __WIN32__ || defined __CYGWIN__ || defined __EMX__ || defined __DJGPP__ + /* Win32, Cygwin, 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)) +#else + /* Unix */ +# define ISSLASH(C) ((C) == '/') +# define IS_ABSOLUTE_PATH(P) ISSLASH ((P)[0]) +#endif + +/* Define function which are usually not available. */ + +#ifdef _LIBC +# define __argz_count(argz, len) INTUSE(__argz_count) (argz, len) +#elif defined HAVE_ARGZ_COUNT +# undef __argz_count +# define __argz_count argz_count +#else +/* Returns the number of strings in ARGZ. */ +static size_t +argz_count__ (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 */ + +#ifdef _LIBC +# define __argz_stringify(argz, len, sep) \ + INTUSE(__argz_stringify) (argz, len, sep) +#elif defined HAVE_ARGZ_STRINGIFY +# undef __argz_stringify +# define __argz_stringify argz_stringify +#else +/* Make '\0' separated arg vector ARGZ printable by converting all the '\0's + except the last into the character SEP. */ +static void +argz_stringify__ (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 */ + +#ifdef _LIBC +#elif defined HAVE_ARGZ_NEXT +# undef __argz_next +# define __argz_next argz_next +#else +static char * +argz_next__ (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 inline int +pop (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 (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 *filename, int do_allocate) +{ + char *abs_filename; + struct loaded_l10nfile **lastp; + struct loaded_l10nfile *retval; + char *cp; + size_t dirlist_count; + size_t entries; + int cnt; + + /* If LANGUAGE contains an absolute directory specification, we ignore + DIRLIST. */ + if (IS_ABSOLUTE_PATH (language)) + dirlist_len = 0; + + /* Allocate room for the full file name. */ + abs_filename = (char *) malloc (dirlist_len + + strlen (language) + + ((mask & XPG_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 + ? strlen (modifier) + 1 : 0) + + 1 + strlen (filename) + 1); + + if (abs_filename == NULL) + return NULL; + + /* Construct file name. */ + cp = abs_filename; + if (dirlist_len > 0) + { + memcpy (cp, dirlist, dirlist_len); + __argz_stringify (cp, dirlist_len, PATH_SEPARATOR); + cp += dirlist_len; + cp[-1] = '/'; + } + + cp = stpcpy (cp, language); + + if ((mask & XPG_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) != 0) + { + *cp++ = '@'; + cp = stpcpy (cp, modifier); + } + + *cp++ = '/'; + stpcpy (cp, filename); + + /* Look in list of already loaded domains whether it is already + available. */ + lastp = l10nfile_list; + 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; + } + + lastp = &retval->next; + } + + if (retval != NULL || do_allocate == 0) + { + free (abs_filename); + return retval; + } + + dirlist_count = (dirlist_len > 0 ? __argz_count (dirlist, dirlist_len) : 1); + + /* Allocate a new loaded_l10nfile. */ + retval = + (struct loaded_l10nfile *) + malloc (sizeof (*retval) + + (((dirlist_count << pop (mask)) + (dirlist_count > 1 ? 1 : 0)) + * sizeof (struct loaded_l10nfile *))); + if (retval == NULL) + { + free (abs_filename); + return NULL; + } + + retval->filename = abs_filename; + + /* We set retval->data to NULL here; it is filled in later. + Setting retval->decided to 1 here means that retval does not + correspond to a real file (dirlist_count > 1) or is not worth + looking up (if an unnormalized codeset was specified). */ + retval->decided = (dirlist_count > 1 + || ((mask & XPG_CODESET) != 0 + && (mask & XPG_NORM_CODESET) != 0)); + retval->data = NULL; + + retval->next = *lastp; + *lastp = retval; + + entries = 0; + /* Recurse to fill the inheritance list of RETVAL. + If the DIRLIST is a real list (i.e. DIRLIST_COUNT > 1), the RETVAL + entry does not correspond to a real file; retval->filename contains + colons. In this case we loop across all elements of DIRLIST and + across all bit patterns dominated by MASK. + If the DIRLIST is a single directory or entirely redundant (i.e. + DIRLIST_COUNT == 1), we loop across all bit patterns dominated by + MASK, excluding MASK itself. + In either case, we loop down from MASK to 0. This has the effect + that the extra bits in the locale name are dropped in this order: + first the modifier, then the territory, then the codeset, then the + normalized_codeset. */ + for (cnt = dirlist_count > 1 ? mask : mask - 1; cnt >= 0; --cnt) + if ((cnt & ~mask) == 0 + && !((cnt & XPG_CODESET) != 0 && (cnt & XPG_NORM_CODESET) != 0)) + { + if (dirlist_count > 1) + { + /* 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, filename, + 1); + } + else + retval->successor[entries++] + = _nl_make_l10nflist (l10nfile_list, dirlist, dirlist_len, + cnt, language, territory, codeset, + normalized_codeset, modifier, 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. The return value is dynamically allocated and has to be + freed by the caller. */ +const char * +_nl_normalize_codeset (const 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 ((unsigned char) codeset[cnt])) + { + ++len; + + if (isalpha ((unsigned char) 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 ((unsigned char) codeset[cnt])) + *wp++ = tolower ((unsigned char) codeset[cnt]); + else if (isdigit ((unsigned char) 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 (char *dest, const char *src) +{ + while ((*dest++ = *src++) != '\0') + /* Do nothing. */ ; + return dest - 1; +} +#endif |