src/language.h

   1 /* $Id$ */
   2
   3 /*
   4  * This file is part of OpenTTD.
   5  * OpenTTD 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, version 2.
   6  * OpenTTD 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.
   7  * See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with OpenTTD. If not, see <http://www.gnu.org/licenses/>.
   8  */
   9
  10 /** @file language.h Information about languages and their files. */
  11
  12 #ifndef LANGUAGE_H
  13 #define LANGUAGE_H
  14
  15 #include "core/smallvec_type.hpp"
  16 #ifdef WITH_ICU_SORT
  17 #include <unicode/coll.h>
  18 #endif /* WITH_ICU_SORT */
  19 #include "strings_type.h"
  20
  21 static const uint8 CASE_GENDER_LEN = 16; ///< The (maximum) length of a case/gender string.
  22 static const uint8 MAX_NUM_GENDERS =  8; ///< Maximum number of supported genders.
  23 static const uint8 MAX_NUM_CASES   = 16; ///< Maximum number of supported cases.
  24
  25 /** Header of a language file. */
  26 struct LanguagePackHeader {
  27         static const uint32 IDENT = 0x474E414C; ///< Identifier for OpenTTD language files, big endian for "LANG"
  28
  29         uint32 ident;       ///< 32-bits identifier
  30         uint32 version;     ///< 32-bits of auto generated version info which is basically a hash of strings.h
  31         char name[32];      ///< the international name of this language
  32         char own_name[32];  ///< the localized name of this language
  33         char isocode[16];   ///< the ISO code for the language (not country code)
  34         uint16 offsets[TEXT_TAB_END]; ///< the offsets
  35
  36         /** Thousand separator used for anything not currencies */
  37         char digit_group_separator[8];
  38         /** Thousand separator used for currencies */
  39         char digit_group_separator_currency[8];
  40         /** Decimal separator */
  41         char digit_decimal_separator[8];
  42         uint16 missing;     ///< number of missing strings.
  43         byte plural_form;   ///< plural form index
  44         byte text_dir;      ///< default direction of the text
  45         /**
  46          * Windows language ID:
  47          * Windows cannot and will not convert isocodes to something it can use to
  48          * determine whether a font can be used for the language or not. As a result
  49          * of that we need to pass the language id via strgen to OpenTTD to tell
  50          * what language it is in "Windows". The ID is the 'locale identifier' on:
  51          *   http://msdn.microsoft.com/en-us/library/ms776294.aspx
  52          */
  53         uint16 winlangid;   ///< windows language id
  54         uint8 newgrflangid; ///< newgrf language id
  55         uint8 num_genders;  ///< the number of genders of this language
  56         uint8 num_cases;    ///< the number of cases of this language
  57         byte pad[3];        ///< pad header to be a multiple of 4
  58
  59         char genders[MAX_NUM_GENDERS][CASE_GENDER_LEN]; ///< the genders used by this translation
  60         char cases[MAX_NUM_CASES][CASE_GENDER_LEN];     ///< the cases used by this translation
  61
  62         bool IsValid() const;
  63
  64         /**
  65          * Get the index for the given gender.
  66          * @param gender_str The string representation of the gender.
  67          * @return The index of the gender, or MAX_NUM_GENDERS when the gender is unknown.
  68          */
  69         uint8 GetGenderIndex(const char *gender_str) const
  70         {
  71                 for (uint8 i = 0; i < MAX_NUM_GENDERS; i++) {
  72                         if (strcmp(gender_str, this->genders[i]) == 0) return i;
  73                 }
  74                 return MAX_NUM_GENDERS;
  75         }
  76
  77         /**
  78          * Get the index for the given case.
  79          * @param case_str The string representation of the case.
  80          * @return The index of the case, or MAX_NUM_CASES when the case is unknown.
  81          */
  82         uint8 GetCaseIndex(const char *case_str) const
  83         {
  84                 for (uint8 i = 0; i < MAX_NUM_CASES; i++) {
  85                         if (strcmp(case_str, this->cases[i]) == 0) return i;
  86                 }
  87                 return MAX_NUM_CASES;
  88         }
  89 };
  90 /** Make sure the size is right. */
  91 assert_compile(sizeof(LanguagePackHeader) % 4 == 0);
  92
  93 /** Metadata about a single language. */
  94 struct LanguageMetadata : public LanguagePackHeader {
  95         char file[MAX_PATH]; ///< Name of the file we read this data from.
  96 };
  97
  98 /** Type for the list of language meta data. */
  99 typedef SmallVector<LanguageMetadata, 4> LanguageList;
 100
 101 /** The actual list of language meta data. */
 102 extern LanguageList _languages;
 103
 104 /** The currently loaded language. */
 105 extern const LanguageMetadata *_current_language;
 106
 107 #ifdef WITH_ICU_SORT
 108 extern Collator *_current_collator;
 109 #endif /* WITH_ICU_SORT */
 110
 111 bool ReadLanguagePack(const LanguageMetadata *lang);
 112 const LanguageMetadata *GetLanguage(byte newgrflangid);
 113
 114 #endif /* LANGUAGE_H */