Romain BECAN / Mbed 2 deprecated Mallette_RB10G1_V41bis

char input

Dependencies:   TS_DISCO_F746NG mbed LCD_DISCO_F746NG BSP_DISCO_F746NG lvgl_RB FastPWM millis

lv_i18n.c@1:404ee28a0b60, 2020-01-17 (annotated)

Committer:
kisvegabor
Date:
Fri Jan 17 06:03:24 2020 +0000
Revision:
1:404ee28a0b60
Child:
4:6a3d12663549
Gabor added comments

Who changed what in which revision?

UserRevisionLine numberNew contents of line
kisvegabor 1:404ee28a0b60 1 #include "./lv_i18n.h"
kisvegabor 1:404ee28a0b60 2
kisvegabor 1:404ee28a0b60 3
kisvegabor 1:404ee28a0b60 4 ////////////////////////////////////////////////////////////////////////////////
kisvegabor 1:404ee28a0b60 5 // Define plural operands
kisvegabor 1:404ee28a0b60 6 // http://unicode.org/reports/tr35/tr35-numbers.html#Operands
kisvegabor 1:404ee28a0b60 7
kisvegabor 1:404ee28a0b60 8 // Integer version, simplified
kisvegabor 1:404ee28a0b60 9
kisvegabor 1:404ee28a0b60 10 #define UNUSED(x) (void)(x)
kisvegabor 1:404ee28a0b60 11
kisvegabor 1:404ee28a0b60 12 static lv_i18n_phrase_t en_gb_texts[] = {
kisvegabor 1:404ee28a0b60 13 {"dog", "This is a dog"},
kisvegabor 1:404ee28a0b60 14 {"cat", "This is a cat"},
kisvegabor 1:404ee28a0b60 15 {NULL, NULL} // End mark
kisvegabor 1:404ee28a0b60 16 };
kisvegabor 1:404ee28a0b60 17
kisvegabor 1:404ee28a0b60 18
kisvegabor 1:404ee28a0b60 19 static const lv_i18n_lang_t en_gb_lang = {
kisvegabor 1:404ee28a0b60 20 .locale_name = "en-GB",
kisvegabor 1:404ee28a0b60 21 .singulars = en_gb_texts,
kisvegabor 1:404ee28a0b60 22 };
kisvegabor 1:404ee28a0b60 23
kisvegabor 1:404ee28a0b60 24 static lv_i18n_phrase_t fr_texts[] = {
kisvegabor 1:404ee28a0b60 25 {"dog", "c'est un chien"},
kisvegabor 1:404ee28a0b60 26 {"cat", "Ceci est un chat"},
kisvegabor 1:404ee28a0b60 27 {NULL, NULL} // End mark
kisvegabor 1:404ee28a0b60 28 };
kisvegabor 1:404ee28a0b60 29
kisvegabor 1:404ee28a0b60 30 static const lv_i18n_lang_t fr_lang = {
kisvegabor 1:404ee28a0b60 31 .locale_name = "fr",
kisvegabor 1:404ee28a0b60 32 .singulars = fr_texts,
kisvegabor 1:404ee28a0b60 33 };
kisvegabor 1:404ee28a0b60 34
kisvegabor 1:404ee28a0b60 35 const lv_i18n_language_pack_t lv_i18n_language_pack[] = {
kisvegabor 1:404ee28a0b60 36 &en_gb_lang,
kisvegabor 1:404ee28a0b60 37 &fr_lang,
kisvegabor 1:404ee28a0b60 38 NULL // End mark
kisvegabor 1:404ee28a0b60 39 };
kisvegabor 1:404ee28a0b60 40
kisvegabor 1:404ee28a0b60 41 ////////////////////////////////////////////////////////////////////////////////
kisvegabor 1:404ee28a0b60 42
kisvegabor 1:404ee28a0b60 43
kisvegabor 1:404ee28a0b60 44 // Internal state
kisvegabor 1:404ee28a0b60 45 static const lv_i18n_language_pack_t * current_lang_pack;
kisvegabor 1:404ee28a0b60 46 static const lv_i18n_lang_t * current_lang;
kisvegabor 1:404ee28a0b60 47
kisvegabor 1:404ee28a0b60 48
kisvegabor 1:404ee28a0b60 49 /**
kisvegabor 1:404ee28a0b60 50 * Reset internal state. For testing.
kisvegabor 1:404ee28a0b60 51 */
kisvegabor 1:404ee28a0b60 52 void __lv_i18n_reset(void)
kisvegabor 1:404ee28a0b60 53 {
kisvegabor 1:404ee28a0b60 54 current_lang_pack = NULL;
kisvegabor 1:404ee28a0b60 55 current_lang = NULL;
kisvegabor 1:404ee28a0b60 56 }
kisvegabor 1:404ee28a0b60 57
kisvegabor 1:404ee28a0b60 58 /**
kisvegabor 1:404ee28a0b60 59 * Set the languages for internationalization
kisvegabor 1:404ee28a0b60 60 * @param langs pointer to the array of languages. (Last element has to be `NULL`)
kisvegabor 1:404ee28a0b60 61 */
kisvegabor 1:404ee28a0b60 62 int lv_i18n_init(const lv_i18n_language_pack_t * langs)
kisvegabor 1:404ee28a0b60 63 {
kisvegabor 1:404ee28a0b60 64 if(langs == NULL) return -1;
kisvegabor 1:404ee28a0b60 65 if(langs[0] == NULL) return -1;
kisvegabor 1:404ee28a0b60 66
kisvegabor 1:404ee28a0b60 67 current_lang_pack = langs;
kisvegabor 1:404ee28a0b60 68 current_lang = langs[0]; /*Automatically select the first language*/
kisvegabor 1:404ee28a0b60 69 return 0;
kisvegabor 1:404ee28a0b60 70 }
kisvegabor 1:404ee28a0b60 71
kisvegabor 1:404ee28a0b60 72 /**
kisvegabor 1:404ee28a0b60 73 * Change the localization (language)
kisvegabor 1:404ee28a0b60 74 * @param l_name name of the translation locale to use. E.g. "en-GB"
kisvegabor 1:404ee28a0b60 75 */
kisvegabor 1:404ee28a0b60 76 int lv_i18n_set_locale(const char * l_name)
kisvegabor 1:404ee28a0b60 77 {
kisvegabor 1:404ee28a0b60 78 if(current_lang_pack == NULL) return -1;
kisvegabor 1:404ee28a0b60 79
kisvegabor 1:404ee28a0b60 80 uint16_t i;
kisvegabor 1:404ee28a0b60 81
kisvegabor 1:404ee28a0b60 82 for(i = 0; current_lang_pack[i] != NULL; i++) {
kisvegabor 1:404ee28a0b60 83 // Found -> finish
kisvegabor 1:404ee28a0b60 84 if(strcmp(current_lang_pack[i]->locale_name, l_name) == 0) {
kisvegabor 1:404ee28a0b60 85 current_lang = current_lang_pack[i];
kisvegabor 1:404ee28a0b60 86 return 0;
kisvegabor 1:404ee28a0b60 87 }
kisvegabor 1:404ee28a0b60 88 }
kisvegabor 1:404ee28a0b60 89
kisvegabor 1:404ee28a0b60 90 return -1;
kisvegabor 1:404ee28a0b60 91 }
kisvegabor 1:404ee28a0b60 92
kisvegabor 1:404ee28a0b60 93
kisvegabor 1:404ee28a0b60 94 static const char * __lv_i18n_get_text_core(lv_i18n_phrase_t * trans, const char * msg_id)
kisvegabor 1:404ee28a0b60 95 {
kisvegabor 1:404ee28a0b60 96 uint16_t i;
kisvegabor 1:404ee28a0b60 97 for(i = 0; trans[i].msg_id != NULL; i++) {
kisvegabor 1:404ee28a0b60 98 if(strcmp(trans[i].msg_id, msg_id) == 0) {
kisvegabor 1:404ee28a0b60 99 /*The msg_id has found. Check the translation*/
kisvegabor 1:404ee28a0b60 100 if(trans[i].translation) return trans[i].translation;
kisvegabor 1:404ee28a0b60 101 }
kisvegabor 1:404ee28a0b60 102 }
kisvegabor 1:404ee28a0b60 103
kisvegabor 1:404ee28a0b60 104 return NULL;
kisvegabor 1:404ee28a0b60 105 }
kisvegabor 1:404ee28a0b60 106
kisvegabor 1:404ee28a0b60 107
kisvegabor 1:404ee28a0b60 108 /**
kisvegabor 1:404ee28a0b60 109 * Get the translation from a message ID
kisvegabor 1:404ee28a0b60 110 * @param msg_id message ID
kisvegabor 1:404ee28a0b60 111 * @return the translation of `msg_id` on the set local
kisvegabor 1:404ee28a0b60 112 */
kisvegabor 1:404ee28a0b60 113 const char * lv_i18n_get_text(const char * msg_id)
kisvegabor 1:404ee28a0b60 114 {
kisvegabor 1:404ee28a0b60 115 if(current_lang == NULL) return msg_id;
kisvegabor 1:404ee28a0b60 116
kisvegabor 1:404ee28a0b60 117 const lv_i18n_lang_t * lang = current_lang;
kisvegabor 1:404ee28a0b60 118 const void * txt;
kisvegabor 1:404ee28a0b60 119
kisvegabor 1:404ee28a0b60 120 // Search in current locale
kisvegabor 1:404ee28a0b60 121 if(lang->singulars != NULL) {
kisvegabor 1:404ee28a0b60 122 txt = __lv_i18n_get_text_core(lang->singulars, msg_id);
kisvegabor 1:404ee28a0b60 123 if (txt != NULL) return txt;
kisvegabor 1:404ee28a0b60 124 }
kisvegabor 1:404ee28a0b60 125
kisvegabor 1:404ee28a0b60 126 // Try to fallback
kisvegabor 1:404ee28a0b60 127 if(lang == current_lang_pack[0]) return msg_id;
kisvegabor 1:404ee28a0b60 128 lang = current_lang_pack[0];
kisvegabor 1:404ee28a0b60 129
kisvegabor 1:404ee28a0b60 130 // Repeat search for default locale
kisvegabor 1:404ee28a0b60 131 if(lang->singulars != NULL) {
kisvegabor 1:404ee28a0b60 132 txt = __lv_i18n_get_text_core(lang->singulars, msg_id);
kisvegabor 1:404ee28a0b60 133 if (txt != NULL) return txt;
kisvegabor 1:404ee28a0b60 134 }
kisvegabor 1:404ee28a0b60 135
kisvegabor 1:404ee28a0b60 136 return msg_id;
kisvegabor 1:404ee28a0b60 137 }
kisvegabor 1:404ee28a0b60 138
kisvegabor 1:404ee28a0b60 139 /**
kisvegabor 1:404ee28a0b60 140 * Get the translation from a message ID and apply the language's plural rule to get correct form
kisvegabor 1:404ee28a0b60 141 * @param msg_id message ID
kisvegabor 1:404ee28a0b60 142 * @param num an integer to select the correct plural form
kisvegabor 1:404ee28a0b60 143 * @return the translation of `msg_id` on the set local
kisvegabor 1:404ee28a0b60 144 */
kisvegabor 1:404ee28a0b60 145 const char * lv_i18n_get_text_plural(const char * msg_id, int32_t num)
kisvegabor 1:404ee28a0b60 146 {
kisvegabor 1:404ee28a0b60 147 if(current_lang == NULL) return msg_id;
kisvegabor 1:404ee28a0b60 148
kisvegabor 1:404ee28a0b60 149 const lv_i18n_lang_t * lang = current_lang;
kisvegabor 1:404ee28a0b60 150 const void * txt;
kisvegabor 1:404ee28a0b60 151 lv_i18n_plural_type_t ptype;
kisvegabor 1:404ee28a0b60 152
kisvegabor 1:404ee28a0b60 153 // Search in current locale
kisvegabor 1:404ee28a0b60 154 if(lang->locale_plural_fn != NULL) {
kisvegabor 1:404ee28a0b60 155 ptype = lang->locale_plural_fn(num);
kisvegabor 1:404ee28a0b60 156
kisvegabor 1:404ee28a0b60 157 if(lang->plurals[ptype] != NULL) {
kisvegabor 1:404ee28a0b60 158 txt = __lv_i18n_get_text_core(lang->plurals[ptype], msg_id);
kisvegabor 1:404ee28a0b60 159 if (txt != NULL) return txt;
kisvegabor 1:404ee28a0b60 160 }
kisvegabor 1:404ee28a0b60 161 }
kisvegabor 1:404ee28a0b60 162
kisvegabor 1:404ee28a0b60 163 // Try to fallback
kisvegabor 1:404ee28a0b60 164 if(lang == current_lang_pack[0]) return msg_id;
kisvegabor 1:404ee28a0b60 165 lang = current_lang_pack[0];
kisvegabor 1:404ee28a0b60 166
kisvegabor 1:404ee28a0b60 167 // Repeat search for default locale
kisvegabor 1:404ee28a0b60 168 if(lang->locale_plural_fn != NULL) {
kisvegabor 1:404ee28a0b60 169 ptype = lang->locale_plural_fn(num);
kisvegabor 1:404ee28a0b60 170
kisvegabor 1:404ee28a0b60 171 if(lang->plurals[ptype] != NULL) {
kisvegabor 1:404ee28a0b60 172 txt = __lv_i18n_get_text_core(lang->plurals[ptype], msg_id);
kisvegabor 1:404ee28a0b60 173 if (txt != NULL) return txt;
kisvegabor 1:404ee28a0b60 174 }
kisvegabor 1:404ee28a0b60 175 }
kisvegabor 1:404ee28a0b60 176
kisvegabor 1:404ee28a0b60 177 return msg_id;
kisvegabor 1:404ee28a0b60 178 }
kisvegabor 1:404ee28a0b60 179
kisvegabor 1:404ee28a0b60 180 /**
kisvegabor 1:404ee28a0b60 181 * Get the name of the currently used locale.
kisvegabor 1:404ee28a0b60 182 * @return name of the currently used locale. E.g. "en-GB"
kisvegabor 1:404ee28a0b60 183 */
kisvegabor 1:404ee28a0b60 184 const char * lv_i18n_get_current_locale(void)
kisvegabor 1:404ee28a0b60 185 {
kisvegabor 1:404ee28a0b60 186 if(!current_lang) return NULL;
kisvegabor 1:404ee28a0b60 187 return current_lang->locale_name;
kisvegabor 1:404ee28a0b60 188 }