2 Copyright (C) 2001-2009 Free Software Foundation, Inc.
3 Written by Bruno Haible <haible@clisp.cons.org>, 2001.
5 This program is free software: you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published by
7 the Free Software Foundation; either version 3 of the License, or
8 (at your option) any later version.
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
13 GNU General Public License for more details.
15 You should have received a copy of the GNU General Public License
16 along with this program. If not, see <http://www.gnu.org/licenses/>. */
32 #define _(str) gettext (str)
34 /* Table of all format string parsers. */
35 struct formatstring_parser *formatstring_parsers[NFORMATS] =
37 /* format_c */ &formatstring_c,
38 /* format_objc */ &formatstring_objc,
39 /* format_sh */ &formatstring_sh,
40 /* format_python */ &formatstring_python,
41 /* format_lisp */ &formatstring_lisp,
42 /* format_elisp */ &formatstring_elisp,
43 /* format_librep */ &formatstring_librep,
44 /* format_scheme */ &formatstring_scheme,
45 /* format_smalltalk */ &formatstring_smalltalk,
46 /* format_java */ &formatstring_java,
47 /* format_csharp */ &formatstring_csharp,
48 /* format_awk */ &formatstring_awk,
49 /* format_pascal */ &formatstring_pascal,
50 /* format_ycp */ &formatstring_ycp,
51 /* format_tcl */ &formatstring_tcl,
52 /* format_perl */ &formatstring_perl,
53 /* format_perl_brace */ &formatstring_perl_brace,
54 /* format_php */ &formatstring_php,
55 /* format_gcc_internal */ &formatstring_gcc_internal,
56 /* format_gfc_internal */ &formatstring_gfc_internal,
57 /* format_qt */ &formatstring_qt,
58 /* format_qt_plural */ &formatstring_qt_plural,
59 /* format_kde */ &formatstring_kde,
60 /* format_boost */ &formatstring_boost
63 /* Check whether both formats strings contain compatible format
64 specifications for format type i (0 <= i < NFORMATS). */
66 check_msgid_msgstr_format_i (const char *msgid, const char *msgid_plural,
67 const char *msgstr, size_t msgstr_len,
69 struct argument_range range,
70 const struct plural_distribution *distribution,
71 formatstring_error_logger_t error_logger)
75 /* At runtime, we can assume the program passes arguments that fit well for
76 msgid. We must signal an error if msgstr wants more arguments that msgid
78 If msgstr wants fewer arguments than msgid, it wouldn't lead to a crash
79 at runtime, but we nevertheless give an error because
80 1) this situation occurs typically after the programmer has added some
81 arguments to msgid, so we must make the translator specially aware
82 of it (more than just "fuzzy"),
83 2) it is generally wrong if a translation wants to ignore arguments that
84 are used by other translations. */
86 struct formatstring_parser *parser = formatstring_parsers[i];
87 char *invalid_reason = NULL;
89 parser->parse (msgid_plural != NULL ? msgid_plural : msgid, false, NULL,
92 if (msgid_descr != NULL)
94 const char *pretty_msgid =
95 (msgid_plural != NULL ? "msgid_plural" : "msgid");
97 const char *pretty_msgstr = "msgstr";
98 bool has_plural_translations = (strlen (msgstr) + 1 < msgstr_len);
99 const char *p_end = msgstr + msgstr_len;
103 for (p = msgstr, j = 0; p < p_end; p += strlen (p) + 1, j++)
107 if (msgid_plural != NULL)
109 sprintf (buf, "msgstr[%u]", j);
113 msgstr_descr = parser->parse (p, true, NULL, &invalid_reason);
115 if (msgstr_descr != NULL)
117 /* Use strict checking (require same number of format
118 directives on both sides) if the message has no plurals,
119 or if msgid_plural exists but on the msgstr[] side
120 there is only msgstr[0], or if distribution->often[j]
121 indicates that the variant applies to infinitely many
122 values of N and the N range is not restricted in a way
123 that the variant applies to only one N.
124 Use relaxed checking when there are at least two
125 msgstr[] forms and the distribution does not give more
126 precise information. */
127 bool strict_checking =
128 (msgid_plural == NULL
129 || !has_plural_translations
130 || (distribution != NULL
131 && distribution->often != NULL
132 && j < distribution->often_length
133 && distribution->often[j]
134 && !(has_range_p (range)
135 && distribution->histogram (distribution,
136 range.min, range.max, j)
139 if (parser->check (msgid_descr, msgstr_descr,
141 error_logger, pretty_msgid, pretty_msgstr))
144 parser->free (msgstr_descr);
149 '%s' is not a valid %s format string, unlike '%s'. Reason: %s"),
150 pretty_msgstr, format_language_pretty[i],
151 pretty_msgid, invalid_reason);
153 free (invalid_reason);
157 parser->free (msgid_descr);
160 free (invalid_reason);
165 /* Check whether both formats strings contain compatible format
167 Return the number of errors that were seen. */
169 check_msgid_msgstr_format (const char *msgid, const char *msgid_plural,
170 const char *msgstr, size_t msgstr_len,
171 const enum is_format is_format[NFORMATS],
172 struct argument_range range,
173 const struct plural_distribution *distribution,
174 formatstring_error_logger_t error_logger)
179 /* We check only those messages for which the msgid's is_format flag
180 is one of 'yes' or 'possible'. We don't check msgids with is_format
181 'no' or 'impossible', to obey the programmer's order. We don't check
182 msgids with is_format 'undecided' because that would introduce too
183 many checks, thus forcing the programmer to add "xgettext: no-c-format"
184 anywhere where a translator wishes to use a percent sign. */
185 for (i = 0; i < NFORMATS; i++)
186 if (possible_format_p (is_format[i]))
187 seen_errors += check_msgid_msgstr_format_i (msgid, msgid_plural,
188 msgstr, msgstr_len, i,