|
Packit |
6c4009 |
/* Expression parsing for plural form selection.
|
|
Packit |
6c4009 |
Copyright (C) 2000-2018 Free Software Foundation, Inc.
|
|
Packit |
6c4009 |
Written by Ulrich Drepper <drepper@cygnus.com>, 2000.
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
This program is free software: you can redistribute it and/or modify
|
|
Packit |
6c4009 |
it under the terms of the GNU Lesser General Public License as published by
|
|
Packit |
6c4009 |
the Free Software Foundation; either version 2.1 of the License, or
|
|
Packit |
6c4009 |
(at your option) any later version.
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
This program is distributed in the hope that it will be useful,
|
|
Packit |
6c4009 |
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
Packit |
6c4009 |
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
Packit |
6c4009 |
GNU Lesser General Public License for more details.
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
You should have received a copy of the GNU Lesser General Public License
|
|
Packit |
6c4009 |
along with this program. If not, see <http://www.gnu.org/licenses/>. */
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
#ifdef HAVE_CONFIG_H
|
|
Packit |
6c4009 |
# include <config.h>
|
|
Packit |
6c4009 |
#endif
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
#include <ctype.h>
|
|
Packit |
6c4009 |
#include <stdlib.h>
|
|
Packit |
6c4009 |
#include <string.h>
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
#include <plural-exp.h>
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
#if (defined __GNUC__ && !(defined __APPLE_CC_ && __APPLE_CC__ > 1) && \
|
|
Packit |
6c4009 |
!defined __cplusplus) \
|
|
Packit |
6c4009 |
|| (defined __STDC_VERSION__ && __STDC_VERSION__ >= 199901L)
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
/* These structs are the constant expression for the germanic plural
|
|
Packit |
6c4009 |
form determination. It represents the expression "n != 1". */
|
|
Packit |
6c4009 |
static const struct expression plvar =
|
|
Packit |
6c4009 |
{
|
|
Packit |
6c4009 |
.nargs = 0,
|
|
Packit |
6c4009 |
.operation = var,
|
|
Packit |
6c4009 |
};
|
|
Packit |
6c4009 |
static const struct expression plone =
|
|
Packit |
6c4009 |
{
|
|
Packit |
6c4009 |
.nargs = 0,
|
|
Packit |
6c4009 |
.operation = num,
|
|
Packit |
6c4009 |
.val =
|
|
Packit |
6c4009 |
{
|
|
Packit |
6c4009 |
.num = 1
|
|
Packit |
6c4009 |
}
|
|
Packit |
6c4009 |
};
|
|
Packit |
6c4009 |
const struct expression GERMANIC_PLURAL =
|
|
Packit |
6c4009 |
{
|
|
Packit |
6c4009 |
.nargs = 2,
|
|
Packit |
6c4009 |
.operation = not_equal,
|
|
Packit |
6c4009 |
.val =
|
|
Packit |
6c4009 |
{
|
|
Packit |
6c4009 |
.args =
|
|
Packit |
6c4009 |
{
|
|
Packit |
6c4009 |
[0] = (struct expression *) &plvar,
|
|
Packit |
6c4009 |
[1] = (struct expression *) &plone
|
|
Packit |
6c4009 |
}
|
|
Packit |
6c4009 |
}
|
|
Packit |
6c4009 |
};
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
# define INIT_GERMANIC_PLURAL()
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
#else
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
/* For compilers without support for ISO C 99 struct/union initializers:
|
|
Packit |
6c4009 |
Initialization at run-time. */
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
static struct expression plvar;
|
|
Packit |
6c4009 |
static struct expression plone;
|
|
Packit |
6c4009 |
struct expression GERMANIC_PLURAL;
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
static void
|
|
Packit |
6c4009 |
init_germanic_plural (void)
|
|
Packit |
6c4009 |
{
|
|
Packit |
6c4009 |
if (plone.val.num == 0)
|
|
Packit |
6c4009 |
{
|
|
Packit |
6c4009 |
plvar.nargs = 0;
|
|
Packit |
6c4009 |
plvar.operation = var;
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
plone.nargs = 0;
|
|
Packit |
6c4009 |
plone.operation = num;
|
|
Packit |
6c4009 |
plone.val.num = 1;
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
GERMANIC_PLURAL.nargs = 2;
|
|
Packit |
6c4009 |
GERMANIC_PLURAL.operation = not_equal;
|
|
Packit |
6c4009 |
GERMANIC_PLURAL.val.args[0] = &plvar;
|
|
Packit |
6c4009 |
GERMANIC_PLURAL.val.args[1] = &plone;
|
|
Packit |
6c4009 |
}
|
|
Packit |
6c4009 |
}
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
# define INIT_GERMANIC_PLURAL() init_germanic_plural ()
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
#endif
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
void
|
|
Packit |
6c4009 |
EXTRACT_PLURAL_EXPRESSION (const char *nullentry,
|
|
Packit |
6c4009 |
const struct expression **pluralp,
|
|
Packit |
6c4009 |
unsigned long int *npluralsp)
|
|
Packit |
6c4009 |
{
|
|
Packit |
6c4009 |
if (nullentry != NULL)
|
|
Packit |
6c4009 |
{
|
|
Packit |
6c4009 |
const char *plural;
|
|
Packit |
6c4009 |
const char *nplurals;
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
plural = strstr (nullentry, "plural=");
|
|
Packit |
6c4009 |
nplurals = strstr (nullentry, "nplurals=");
|
|
Packit |
6c4009 |
if (plural == NULL || nplurals == NULL)
|
|
Packit |
6c4009 |
goto no_plural;
|
|
Packit |
6c4009 |
else
|
|
Packit |
6c4009 |
{
|
|
Packit |
6c4009 |
char *endp;
|
|
Packit |
6c4009 |
unsigned long int n;
|
|
Packit |
6c4009 |
struct parse_args args;
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
/* First get the number. */
|
|
Packit |
6c4009 |
nplurals += 9;
|
|
Packit |
6c4009 |
while (*nplurals != '\0' && isspace ((unsigned char) *nplurals))
|
|
Packit |
6c4009 |
++nplurals;
|
|
Packit |
6c4009 |
if (!(*nplurals >= '0' && *nplurals <= '9'))
|
|
Packit |
6c4009 |
goto no_plural;
|
|
Packit |
6c4009 |
#if defined HAVE_STRTOUL || defined _LIBC
|
|
Packit |
6c4009 |
n = strtoul (nplurals, &endp, 10);
|
|
Packit |
6c4009 |
#else
|
|
Packit |
6c4009 |
for (endp = nplurals, n = 0; *endp >= '0' && *endp <= '9'; endp++)
|
|
Packit |
6c4009 |
n = n * 10 + (*endp - '0');
|
|
Packit |
6c4009 |
#endif
|
|
Packit |
6c4009 |
if (nplurals == endp)
|
|
Packit |
6c4009 |
goto no_plural;
|
|
Packit |
6c4009 |
*npluralsp = n;
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
/* Due to the restrictions bison imposes onto the interface of the
|
|
Packit |
6c4009 |
scanner function we have to put the input string and the result
|
|
Packit |
6c4009 |
passed up from the parser into the same structure which address
|
|
Packit |
6c4009 |
is passed down to the parser. */
|
|
Packit |
6c4009 |
plural += 7;
|
|
Packit |
6c4009 |
args.cp = plural;
|
|
Packit |
6c4009 |
if (PLURAL_PARSE (&args) != 0)
|
|
Packit |
6c4009 |
goto no_plural;
|
|
Packit |
6c4009 |
*pluralp = args.res;
|
|
Packit |
6c4009 |
}
|
|
Packit |
6c4009 |
}
|
|
Packit |
6c4009 |
else
|
|
Packit |
6c4009 |
{
|
|
Packit |
6c4009 |
/* By default we are using the Germanic form: singular form only
|
|
Packit |
6c4009 |
for `one', the plural form otherwise. Yes, this is also what
|
|
Packit |
6c4009 |
English is using since English is a Germanic language. */
|
|
Packit |
6c4009 |
no_plural:
|
|
Packit |
6c4009 |
INIT_GERMANIC_PLURAL ();
|
|
Packit |
6c4009 |
*pluralp = &GERMANIC_PLURAL;
|
|
Packit |
6c4009 |
*npluralsp = 2;
|
|
Packit |
6c4009 |
}
|
|
Packit |
6c4009 |
}
|