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author | Ulrich Drepper <drepper@redhat.com> | 2001-11-28 00:09:26 +0000 |
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committer | Ulrich Drepper <drepper@redhat.com> | 2001-11-28 00:09:26 +0000 |
commit | 0555fccea74d63cce35ca7121688a4a6dce610ca (patch) | |
tree | 2b29fafa424bd97c187d21457e3c4c70f73e32cb /intl/plural-exp.c | |
parent | 8a2072042b2b77e4e160d8ebcf99cdde370737ab (diff) | |
download | glibc-0555fccea74d63cce35ca7121688a4a6dce610ca.tar.gz glibc-0555fccea74d63cce35ca7121688a4a6dce610ca.tar.xz glibc-0555fccea74d63cce35ca7121688a4a6dce610ca.zip |
Update.
2001-03-04 Bruno Haible <bruno@clisp.org> * intl/dcigettext.c (DCIGETTEXT): Increment path_max proportionally. 2001-10-31 Bruno Haible <bruno@clisp.org> * intl/plural.y: Include <stddef.h>, needed for NULL with SunOS 4 cc. 2001-03-21 Bruno Haible <bruno@clisp.org> * intl/dcigettext.c (_nl_state_lock): Mark as #ifdef _LIBC. AIX 3 xlc chokes on empty macro arguments. * intl/plural.y: Add #pragma for alloca on AIX 3. 2001-11-27 Ulrich Drepper <drepper@redhat.com> * intl/dcigettext.c (guess_category_value): Only implement for glibc. Otherwise rely on function _nl_locale_name which isn't present in the glibc sources. 2001-09-24 Bruno Haible <bruno@clisp.org> * intl/loadmsgcat.c (_nl_init_domain_conv): Also enable transliteration when building on a glibc system but outside glibc. 2001-09-22 Bruno Haible <bruno@clisp.org> * intl/plural-eval.c: New file, extracted from dcigettext.c. * intl/dcigettext.c (plural_eval): Remove function, moved to intl/plural-eval.c. (plural_lookup): Call PLURAL_EVAL instead of plural_eval. Include plural-eval.c. 2001-09-22 Bruno Haible <bruno@clisp.org> * intl/plural-exp.c (EXTRACT_PLURAL_EXPRESSION): Reject numbers that don't start with a digit; nplurals must be positive. 2001-09-02 Bruno Haible <bruno@clisp.org> * intl/plural-exp.h: New file, extracted from gettextP.h. * intl/plural-exp.c: New file, extracted from loadmsgcat.c. * intl/gettextP.h (struct expression, struct parse_args, __gettext_free_exp, __gettextparse): Move to plural-exp.h. * intl/loadmsgcat.c: Include plural-exp.h. (PLURAL_PARSE): Move macro to plural-exp.h. (plvar, plone, germanic_plural, INIT_GERMANIC_PLURAL): Move to plural-exp.c. (_nl_load_domain): Move plural handling code to plural-exp.c. Call EXTRACT_PLURAL_EXPRESSION. (_nl_unload_domain): Update. * intl/dcigettext.c: Include plural-exp.h. * intl/plural.y: Include plural-exp.h, not gettextP.h. (FREE_EXPRESSION): Move macro to plural-exp.h. * intl/Makefile (routines): Add plural-exp. (distribute): Add plural-exp.h. 2001-07-28 Bruno Haible <bruno@clisp.org> * intl/l10nflist.c (_nl_normalize_codeset): Cast isalnum, isalpha, isdigit, tolower argument to 'unsigned char'. * intl/loadmsgcat.c (_nl_load_domain): Cast isspace argument to 'unsigned char'. * intl/localealias.c (read_alias_file): Cast isspace argument to 'unsigned char'. 2001-10-20 Bruno Haible <bruno@clisp.org> Assume strchr() exists. (Without it, intl/explodename.c wouldn't link anyway.) * intl/dcigettext.c (strchr): Remove fallback definition; it conflicts with the variable 'index' in plural_lookup. * intl/l10nflist.c (strchr): Likewise. * intl/localealias.c (strchr): Likewise. Assume <stddef.h>, <stdlib.h>, <string.h>, <locale.h> exist. * intl/bindtextdom.c: Likewise. * intl/dcigettext.c: Likewise. * intl/dgettext.c: Likewise. * intl/dngettext.c: Likewise. * intl/explodename.c: Likewise. * intl/finddomain.c: Likewise. * intl/gettext.c: Likewise. * intl/l10nflist.c: Likewise. * intl/loadmsgcat.c: Likewise. * intl/localealias.c: Likewise. * intl/ngettext.c: Likewise. * intl/textdomain.c: Likewise. * intl/gettext.h: Assume <limits.h> exists.
Diffstat (limited to 'intl/plural-exp.c')
-rw-r--r-- | intl/plural-exp.c | 157 |
1 files changed, 157 insertions, 0 deletions
diff --git a/intl/plural-exp.c b/intl/plural-exp.c new file mode 100644 index 0000000000..ba5d455cd5 --- /dev/null +++ b/intl/plural-exp.c @@ -0,0 +1,157 @@ +/* Expression parsing for plural form selection. + Copyright (C) 2000, 2001 Free Software Foundation, Inc. + Written by Ulrich Drepper <drepper@cygnus.com>, 2000. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library 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 + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; 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 + +#include <ctype.h> +#include <stdlib.h> +#include <string.h> + +#include "plural-exp.h" + +#if (defined __GNUC__ && !defined __APPLE_CC__) \ + || (defined __STDC_VERSION__ && __STDC_VERSION__ >= 199901L) + +/* These structs are the constant expression for the germanic plural + form determination. It represents the expression "n != 1". */ +static const struct expression plvar = +{ + .nargs = 0, + .operation = var, +}; +static const struct expression plone = +{ + .nargs = 0, + .operation = num, + .val = + { + .num = 1 + } +}; +struct expression GERMANIC_PLURAL = +{ + .nargs = 2, + .operation = not_equal, + .val = + { + .args = + { + [0] = (struct expression *) &plvar, + [1] = (struct expression *) &plone + } + } +}; + +# define INIT_GERMANIC_PLURAL() + +#else + +/* For compilers without support for ISO C 99 struct/union initializers: + Initialization at run-time. */ + +static struct expression plvar; +static struct expression plone; +struct expression GERMANIC_PLURAL; + +static void +init_germanic_plural () +{ + if (plone.val.num == 0) + { + plvar.nargs = 0; + plvar.operation = var; + + plone.nargs = 0; + plone.operation = num; + plone.val.num = 1; + + GERMANIC_PLURAL.nargs = 2; + GERMANIC_PLURAL.operation = not_equal; + GERMANIC_PLURAL.val.args[0] = &plvar; + GERMANIC_PLURAL.val.args[1] = &plone; + } +} + +# define INIT_GERMANIC_PLURAL() init_germanic_plural () + +#endif + +void +internal_function +EXTRACT_PLURAL_EXPRESSION (nullentry, pluralp, npluralsp) + const char *nullentry; + struct expression **pluralp; + unsigned long int *npluralsp; +{ + if (nullentry != NULL) + { + const char *plural; + const char *nplurals; + + plural = strstr (nullentry, "plural="); + nplurals = strstr (nullentry, "nplurals="); + if (plural == NULL || nplurals == NULL) + goto no_plural; + else + { + char *endp; + unsigned long int n; + struct parse_args args; + + /* First get the number. */ + nplurals += 9; + while (*nplurals != '\0' && isspace ((unsigned char) *nplurals)) + ++nplurals; + if (!(*nplurals >= '0' && *nplurals <= '9')) + goto no_plural; +#if defined HAVE_STRTOUL || defined _LIBC + n = strtoul (nplurals, &endp, 10); +#else + for (endp = nplurals, n = 0; *endp >= '0' && *endp <= '9'; endp++) + n = n * 10 + (*endp - '0'); +#endif + if (nplurals == endp) + goto no_plural; + *npluralsp = n; + + /* Due to the restrictions bison imposes onto the interface of the + scanner function we have to put the input string and the result + passed up from the parser into the same structure which address + is passed down to the parser. */ + plural += 7; + args.cp = plural; + if (PLURAL_PARSE (&args) != 0) + goto no_plural; + *pluralp = args.res; + } + } + else + { + /* By default we are using the Germanic form: singular form only + for `one', the plural form otherwise. Yes, this is also what + English is using since English is a Germanic language. */ + no_plural: + INIT_GERMANIC_PLURAL (); + *pluralp = &GERMANIC_PLURAL; + *npluralsp = 2; + } +} |