/[cvs]/eggdrop1.9/intl/plural-exp.c
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Annotation of /eggdrop1.9/intl/plural-exp.c

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Revision 1.1 - (hide annotations) (download) (as text)
Fri Mar 7 11:30:34 2003 UTC (16 years, 1 month ago) by tothwolf
Branch: MAIN
CVS Tags: HEAD
File MIME type: text/x-chdr
* Upgraded gettext to version 0.11.5.

1 tothwolf 1.1 /* Expression parsing for plural form selection.
2     Copyright (C) 2000, 2001 Free Software Foundation, Inc.
3     Written by Ulrich Drepper <drepper@cygnus.com>, 2000.
4    
5     This program is free software; you can redistribute it and/or modify it
6     under the terms of the GNU Library General Public License as published
7     by the Free Software Foundation; either version 2, or (at your option)
8     any later version.
9    
10     This program is distributed in the hope that it will be useful,
11     but WITHOUT ANY WARRANTY; without even the implied warranty of
12     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13     Library General Public License for more details.
14    
15     You should have received a copy of the GNU Library General Public
16     License along with this program; if not, write to the Free Software
17     Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
18     USA. */
19    
20     #ifdef HAVE_CONFIG_H
21     # include <config.h>
22     #endif
23    
24     #include <ctype.h>
25     #include <stdlib.h>
26     #include <string.h>
27    
28     #include "plural-exp.h"
29    
30     #if (defined __GNUC__ && !defined __APPLE_CC__) \
31     || (defined __STDC_VERSION__ && __STDC_VERSION__ >= 199901L)
32    
33     /* These structs are the constant expression for the germanic plural
34     form determination. It represents the expression "n != 1". */
35     static const struct expression plvar =
36     {
37     .nargs = 0,
38     .operation = var,
39     };
40     static const struct expression plone =
41     {
42     .nargs = 0,
43     .operation = num,
44     .val =
45     {
46     .num = 1
47     }
48     };
49     struct expression GERMANIC_PLURAL =
50     {
51     .nargs = 2,
52     .operation = not_equal,
53     .val =
54     {
55     .args =
56     {
57     [0] = (struct expression *) &plvar,
58     [1] = (struct expression *) &plone
59     }
60     }
61     };
62    
63     # define INIT_GERMANIC_PLURAL()
64    
65     #else
66    
67     /* For compilers without support for ISO C 99 struct/union initializers:
68     Initialization at run-time. */
69    
70     static struct expression plvar;
71     static struct expression plone;
72     struct expression GERMANIC_PLURAL;
73    
74     static void
75     init_germanic_plural ()
76     {
77     if (plone.val.num == 0)
78     {
79     plvar.nargs = 0;
80     plvar.operation = var;
81    
82     plone.nargs = 0;
83     plone.operation = num;
84     plone.val.num = 1;
85    
86     GERMANIC_PLURAL.nargs = 2;
87     GERMANIC_PLURAL.operation = not_equal;
88     GERMANIC_PLURAL.val.args[0] = &plvar;
89     GERMANIC_PLURAL.val.args[1] = &plone;
90     }
91     }
92    
93     # define INIT_GERMANIC_PLURAL() init_germanic_plural ()
94    
95     #endif
96    
97     void
98     internal_function
99     EXTRACT_PLURAL_EXPRESSION (nullentry, pluralp, npluralsp)
100     const char *nullentry;
101     struct expression **pluralp;
102     unsigned long int *npluralsp;
103     {
104     if (nullentry != NULL)
105     {
106     const char *plural;
107     const char *nplurals;
108    
109     plural = strstr (nullentry, "plural=");
110     nplurals = strstr (nullentry, "nplurals=");
111     if (plural == NULL || nplurals == NULL)
112     goto no_plural;
113     else
114     {
115     char *endp;
116     unsigned long int n;
117     struct parse_args args;
118    
119     /* First get the number. */
120     nplurals += 9;
121     while (*nplurals != '\0' && isspace ((unsigned char) *nplurals))
122     ++nplurals;
123     if (!(*nplurals >= '0' && *nplurals <= '9'))
124     goto no_plural;
125     #if defined HAVE_STRTOUL || defined _LIBC
126     n = strtoul (nplurals, &endp, 10);
127     #else
128     for (endp = nplurals, n = 0; *endp >= '0' && *endp <= '9'; endp++)
129     n = n * 10 + (*endp - '0');
130     #endif
131     if (nplurals == endp)
132     goto no_plural;
133     *npluralsp = n;
134    
135     /* Due to the restrictions bison imposes onto the interface of the
136     scanner function we have to put the input string and the result
137     passed up from the parser into the same structure which address
138     is passed down to the parser. */
139     plural += 7;
140     args.cp = plural;
141     if (PLURAL_PARSE (&args) != 0)
142     goto no_plural;
143     *pluralp = args.res;
144     }
145     }
146     else
147     {
148     /* By default we are using the Germanic form: singular form only
149     for `one', the plural form otherwise. Yes, this is also what
150     English is using since English is a Germanic language. */
151     no_plural:
152     INIT_GERMANIC_PLURAL ();
153     *pluralp = &GERMANIC_PLURAL;
154     *npluralsp = 2;
155     }
156     }

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