/* Format strings. Copyright (C) 2001-2009 Free Software Foundation, Inc. Written by Bruno Haible , 2001. This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 3 of the License, or (at your option) any later version. This program 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 General Public License for more details. You should have received a copy of the GNU General Public License along with this program. If not, see . */ #ifndef _FORMAT_H #define _FORMAT_H #include #include "pos.h" /* Get lex_pos_ty. */ #include "message.h" /* Get NFORMATS. */ #include "plural-distrib.h" /* Get struct plural_distribution. */ #include "error.h" /* Get fallback definition of __attribute__. */ #ifdef __cplusplus extern "C" { #endif /* These indicators are set by the parse function at the appropriate positions. */ enum { /* Set on the first byte of a format directive. */ FMTDIR_START = 1 << 0, /* Set on the last byte of a format directive. */ FMTDIR_END = 1 << 1, /* Set on the last byte of an invalid format directive, where a parse error was recognized. */ FMTDIR_ERROR = 1 << 2 }; /* Macro for use inside a parser: Sets an indicator at the position corresponding to PTR. Assumes local variables 'fdi' and 'format_start' are defined. */ #define FDI_SET(ptr, flag) \ if (fdi != NULL) \ fdi[(ptr) - format_start] |= (flag)/*;*/ /* This type of callback is responsible for showing an error. */ typedef void (*formatstring_error_logger_t) (const char *format, ...) #if __GNUC__ > 3 || (__GNUC__ == 3 && __GNUC_MINOR__ >= 1) __attribute__ ((__format__ (__printf__, 1, 2))) #endif ; /* This structure describes a format string parser for a language. */ struct formatstring_parser { /* Parse the given string as a format string. If translated is true, some extensions available only to msgstr but not to msgid strings are recognized. If fdi is non-NULL, it must be a an array of strlen (string) zero bytes. Return a freshly allocated structure describing 1. the argument types/names needed for the format string, 2. the total number of format directives. Return NULL if the string is not a valid format string. In this case, also set *invalid_reason to an error message explaining why. In both cases, set FMTDIR_* bits at the appropriate positions in fdi. */ void * (*parse) (const char *string, bool translated, char *fdi, char **invalid_reason); /* Free a format string descriptor, returned by parse(). */ void (*free) (void *descr); /* Return the number of format directives. A string that can be output literally has 0 format directives. */ int (*get_number_of_directives) (void *descr); /* Return true if the format string, although valid, contains directives that make it appear unlikely that the string was meant as a format string. A NULL function is equivalent to a function that always returns false. */ bool (*is_unlikely_intentional) (void *descr); /* Verify that the argument types/names in msgid_descr and those in msgstr_descr are the same (if equality=true), or (if equality=false) that those of msgid_descr extend those of msgstr_descr (i.e. msgstr_descr may omit some of the arguments of msgid_descr). If not, signal an error using error_logger (only if error_logger != NULL) and return true. Otherwise return false. */ bool (*check) (void *msgid_descr, void *msgstr_descr, bool equality, formatstring_error_logger_t error_logger, const char *pretty_msgid, const char *pretty_msgstr); }; /* Format string parsers, each defined in its own file. */ extern DLL_VARIABLE struct formatstring_parser formatstring_c; extern DLL_VARIABLE struct formatstring_parser formatstring_objc; extern DLL_VARIABLE struct formatstring_parser formatstring_sh; extern DLL_VARIABLE struct formatstring_parser formatstring_python; extern DLL_VARIABLE struct formatstring_parser formatstring_python_brace; extern DLL_VARIABLE struct formatstring_parser formatstring_lisp; extern DLL_VARIABLE struct formatstring_parser formatstring_elisp; extern DLL_VARIABLE struct formatstring_parser formatstring_librep; extern DLL_VARIABLE struct formatstring_parser formatstring_scheme; extern DLL_VARIABLE struct formatstring_parser formatstring_smalltalk; extern DLL_VARIABLE struct formatstring_parser formatstring_java; extern DLL_VARIABLE struct formatstring_parser formatstring_csharp; extern DLL_VARIABLE struct formatstring_parser formatstring_awk; extern DLL_VARIABLE struct formatstring_parser formatstring_pascal; extern DLL_VARIABLE struct formatstring_parser formatstring_ycp; extern DLL_VARIABLE struct formatstring_parser formatstring_tcl; extern DLL_VARIABLE struct formatstring_parser formatstring_perl; extern DLL_VARIABLE struct formatstring_parser formatstring_perl_brace; extern DLL_VARIABLE struct formatstring_parser formatstring_php; extern DLL_VARIABLE struct formatstring_parser formatstring_gcc_internal; extern DLL_VARIABLE struct formatstring_parser formatstring_gfc_internal; extern DLL_VARIABLE struct formatstring_parser formatstring_qt; extern DLL_VARIABLE struct formatstring_parser formatstring_qt_plural; extern DLL_VARIABLE struct formatstring_parser formatstring_kde; extern DLL_VARIABLE struct formatstring_parser formatstring_boost; extern DLL_VARIABLE struct formatstring_parser formatstring_lua; extern DLL_VARIABLE struct formatstring_parser formatstring_javascript; /* Table of all format string parsers. */ extern DLL_VARIABLE struct formatstring_parser *formatstring_parsers[NFORMATS]; /* Returns an array of the ISO C 99 format directives and other format flags or directives with a system dependent expansion contained in the argument string. *intervalsp is assigned to a freshly allocated array of intervals (startpos pointing to '<', endpos to the character after '>'), and *lengthp is assigned to the number of intervals in this array. */ struct interval { size_t startpos; size_t endpos; }; extern void get_sysdep_c_format_directives (const char *string, bool translated, struct interval **intervalsp, size_t *lengthp); /* Returns the number of unnamed arguments consumed by a Python format string. */ extern unsigned int get_python_format_unnamed_arg_count (const char *string); /* Check whether both formats strings contain compatible format specifications for format type i (0 <= i < NFORMATS). Return the number of errors that were seen. */ extern int check_msgid_msgstr_format_i (const char *msgid, const char *msgid_plural, const char *msgstr, size_t msgstr_len, size_t i, struct argument_range range, const struct plural_distribution *distribution, formatstring_error_logger_t error_logger); /* Check whether both formats strings contain compatible format specifications. Return the number of errors that were seen. */ extern int check_msgid_msgstr_format (const char *msgid, const char *msgid_plural, const char *msgstr, size_t msgstr_len, const enum is_format is_format[NFORMATS], struct argument_range range, const struct plural_distribution *distribution, formatstring_error_logger_t error_logger); #ifdef __cplusplus } #endif #endif /* _FORMAT_H */