1 /* Format strings. 2 Copyright (C) 2001-2006 Free Software Foundation, Inc. 3 Written by Bruno Haible <haible (at) clisp.cons.org>, 2001. 4 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 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 13 GNU General Public License for more details. 14 15 You should have received a copy of the GNU General Public License 16 along with this program; if not, write to the Free Software Foundation, 17 Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */ 18 19 #ifdef HAVE_CONFIG_H 20 # include <config.h> 21 #endif 22 23 /* Specification. */ 24 #include "format.h" 25 26 #include <stdbool.h> 27 #include <stdio.h> 28 #include <stdlib.h> 29 30 #include "message.h" 31 #include "gettext.h" 32 33 #define _(str) gettext (str) 34 35 /* Table of all format string parsers. */ 36 struct formatstring_parser *formatstring_parsers[NFORMATS] = 37 { 38 /* format_c */ &formatstring_c, 39 /* format_objc */ &formatstring_objc, 40 /* format_sh */ &formatstring_sh, 41 /* format_python */ &formatstring_python, 42 /* format_lisp */ &formatstring_lisp, 43 /* format_elisp */ &formatstring_elisp, 44 /* format_librep */ &formatstring_librep, 45 /* format_scheme */ &formatstring_scheme, 46 /* format_smalltalk */ &formatstring_smalltalk, 47 /* format_java */ &formatstring_java, 48 /* format_csharp */ &formatstring_csharp, 49 /* format_awk */ &formatstring_awk, 50 /* format_pascal */ &formatstring_pascal, 51 /* format_ycp */ &formatstring_ycp, 52 /* format_tcl */ &formatstring_tcl, 53 /* format_perl */ &formatstring_perl, 54 /* format_perl_brace */ &formatstring_perl_brace, 55 /* format_php */ &formatstring_php, 56 /* format_gcc_internal */ &formatstring_gcc_internal, 57 /* format_qt */ &formatstring_qt, 58 /* format_boost */ &formatstring_boost 59 }; 60 61 /* Check whether both formats strings contain compatible format 62 specifications. 63 PLURAL_DISTRIBUTION is either NULL or an array of nplurals elements, 64 PLURAL_DISTRIBUTION[j] being true if the value j appears to be assumed 65 infinitely often by the plural formula. 66 Return the number of errors that were seen. */ 67 int 68 check_msgid_msgstr_format (const char *msgid, const char *msgid_plural, 69 const char *msgstr, size_t msgstr_len, 70 const enum is_format is_format[NFORMATS], 71 const unsigned char *plural_distribution, 72 formatstring_error_logger_t error_logger) 73 { 74 int seen_errors = 0; 75 size_t i; 76 unsigned int j; 77 78 /* We check only those messages for which the msgid's is_format flag 79 is one of 'yes' or 'possible'. We don't check msgids with is_format 80 'no' or 'impossible', to obey the programmer's order. We don't check 81 msgids with is_format 'undecided' because that would introduce too 82 many checks, thus forcing the programmer to add "xgettext: no-c-format" 83 anywhere where a translator wishes to use a percent sign. */ 84 for (i = 0; i < NFORMATS; i++) 85 if (possible_format_p (is_format[i])) 86 { 87 /* At runtime, we can assume the program passes arguments that 88 fit well for msgid. We must signal an error if msgstr wants 89 more arguments that msgid accepts. 90 If msgstr wants fewer arguments than msgid, it wouldn't lead 91 to a crash at runtime, but we nevertheless give an error because 92 1) this situation occurs typically after the programmer has 93 added some arguments to msgid, so we must make the translator 94 specially aware of it (more than just "fuzzy"), 95 2) it is generally wrong if a translation wants to ignore 96 arguments that are used by other translations. */ 97 98 struct formatstring_parser *parser = formatstring_parsers[i]; 99 char *invalid_reason = NULL; 100 void *msgid_descr = 101 parser->parse (msgid_plural != NULL ? msgid_plural : msgid, 102 false, &invalid_reason); 103 104 if (msgid_descr != NULL) 105 { 106 char buf[18+1]; 107 const char *pretty_msgstr = "msgstr"; 108 bool has_plural_translations = (strlen (msgstr) + 1 < msgstr_len); 109 const char *p_end = msgstr + msgstr_len; 110 const char *p; 111 112 for (p = msgstr, j = 0; p < p_end; p += strlen (p) + 1, j++) 113 { 114 void *msgstr_descr; 115 116 if (msgid_plural != NULL) 117 { 118 sprintf (buf, "msgstr[%u]", j); 119 pretty_msgstr = buf; 120 } 121 122 msgstr_descr = parser->parse (p, true, &invalid_reason); 123 124 if (msgstr_descr != NULL) 125 { 126 /* Use strict checking (require same number of format 127 directives on both sides) if the message has no plurals, 128 or if msgid_plural exists but on the msgstr[] side 129 there is only msgstr[0], or if plural_distribution[j] 130 indicates that the variant applies to infinitely many 131 values of N. 132 Use relaxed checking when there are at least two 133 msgstr[] forms and the plural_distribution array does 134 not give more precise information. */ 135 bool strict_checking = 136 (msgid_plural == NULL 137 || !has_plural_translations 138 || (plural_distribution != NULL && plural_distribution[j])); 139 140 if (parser->check (msgid_descr, msgstr_descr, 141 strict_checking, 142 error_logger, pretty_msgstr)) 143 seen_errors++; 144 145 parser->free (msgstr_descr); 146 } 147 else 148 { 149 error_logger (_("\ 150 '%s' is not a valid %s format string, unlike 'msgid'. Reason: %s"), 151 pretty_msgstr, format_language_pretty[i], 152 invalid_reason); 153 seen_errors++; 154 free (invalid_reason); 155 } 156 } 157 158 parser->free (msgid_descr); 159 } 160 else 161 free (invalid_reason); 162 } 163 164 return seen_errors; 165 } 166
Indexes created Thu Jul 16 00:26:27 UTC 2026