131 lines
4.5 KiB
C
131 lines
4.5 KiB
C
//language.c
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#include "language.h"
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#include <avr/pgmspace.h>
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#include "bootapp.h"
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// Currectly active language selection.
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uint8_t lang_selected = 0;
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#if (LANG_MODE == 0) //primary language only
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#else //(LANG_MODE == 0)
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//reserved xx kbytes for secondary language table
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const char _SEC_LANG[LANG_SIZE_RESERVED] PROGMEM_I2 = "_SEC_LANG";
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#endif //(LANG_MODE == 0)
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//lang_table_t structure - 16byte header
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typedef struct
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{
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struct
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{
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uint32_t magic; //+0
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uint16_t size; //+4
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uint16_t count; //+6
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uint16_t checksum; //+8
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uint16_t reserved0; //+10
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uint32_t reserved1; //+12
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} header;
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uint16_t table[];
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} lang_table_t;
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//lang_table pointer
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lang_table_t* lang_table = 0;
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const char* lang_get_translation(const char* s)
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{
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if (lang_selected == 0) return s + 2; //primary language selected
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if (lang_table == 0) return s + 2; //sec. lang table not found
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uint16_t ui = pgm_read_word(((uint16_t*)s)); //read string id
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if (ui == 0xffff) return s + 2; //translation not found
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ui = pgm_read_word(((uint16_t*)(((char*)lang_table + 16 + ui*2)))); //read relative offset
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if (pgm_read_byte(((uint8_t*)((char*)lang_table + ui))) == 0)
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return s + 2;//not translated string
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return (const char*)((char*)lang_table + ui); //return calculated pointer
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}
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const char* lang_get_sec_lang_str(const char* s)
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{
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uint16_t ui = (uint16_t)&_SEC_LANG; //pointer to _SEC_LANG reserved space
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ui += 0x00ff; //add 1 page
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ui &= 0xff00; //align to page
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lang_table_t* _lang_table = ui; //table pointer
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ui = pgm_read_word(((uint16_t*)s)); //read string id
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if (ui == 0xffff) return s + 2; //translation not found
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ui = pgm_read_word(((uint16_t*)(((char*)_lang_table + 16 + ui*2)))); //read relative offset
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return (const char*)((char*)_lang_table + ui); //return calculated pointer
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}
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const char* lang_get_sec_lang_str_by_id(uint16_t id)
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{
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uint16_t ui = ((((uint16_t)&_SEC_LANG) + 0x00ff) & 0xff00); //table pointer
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return ui + pgm_read_word(((uint16_t*)(ui + 16 + id * 2))); //read relative offset and return calculated pointer
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}
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const char* lang_select(uint8_t lang)
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{
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#if (LANG_MODE == 0) //primary language only
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return 0;
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#else //(LANG_MODE == 0)
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if (lang == 0) //primary language
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{
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lang_table = 0;
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lang_selected = 0;
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return;
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}
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uint16_t ui = (uint16_t)&_SEC_LANG; //pointer to _SEC_LANG reserved space
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ui += 0x00ff; //add 1 page
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ui &= 0xff00; //align to page
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lang_table = ui; //set table pointer
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ui = pgm_read_word(((uint16_t*)(((char*)lang_table + 16)))); //read relative offset of first string (language name)
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return (const char*)((char*)lang_table + ui); //return calculated pointer
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#endif //(LANG_MODE == 0)
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}
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uint8_t lang_get_count()
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{
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uint16_t ui = (uint16_t)&_SEC_LANG; //pointer to _SEC_LANG reserved space
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ui += 0x00ff; //add 1 page
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ui &= 0xff00; //align to page
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lang_table_t* _lang_table = ui; //table pointer
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if (pgm_read_dword(((uint32_t*)(_lang_table + 0))) == 0x4bb45aa5) return 2;
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return 1;
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}
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const char* lang_get_name(uint8_t lang)
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{
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if (lang == 0) return MSG_LANGUAGE_NAME + 2;
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return lang_get_sec_lang_str(MSG_LANGUAGE_NAME);
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}
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#ifdef DEBUG_SEC_LANG
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uint16_t lang_print_sec_lang(FILE* out)
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{
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printf_P(_n("&_SEC_LANG = 0x%04x\n"), &_SEC_LANG);
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printf_P(_n("sizeof(_SEC_LANG) = 0x%04x\n"), sizeof(_SEC_LANG));
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uint16_t ptr_lang_table0 = ((uint16_t)(&_SEC_LANG) + 0xff) & 0xff00;
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printf_P(_n("&_lang_table0 = 0x%04x\n"), ptr_lang_table0);
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uint32_t _lt_magic = pgm_read_dword(((uint32_t*)(ptr_lang_table0 + 0)));
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uint16_t _lt_size = pgm_read_word(((uint16_t*)(ptr_lang_table0 + 4)));
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uint16_t _lt_count = pgm_read_word(((uint16_t*)(ptr_lang_table0 + 6)));
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uint16_t _lt_chsum = pgm_read_word(((uint16_t*)(ptr_lang_table0 + 8)));
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uint16_t _lt_resv0 = pgm_read_word(((uint16_t*)(ptr_lang_table0 + 10)));
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uint32_t _lt_resv1 = pgm_read_dword(((uint32_t*)(ptr_lang_table0 + 12)));
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printf_P(_n(" _lt_magic = 0x%08lx %S\n"), _lt_magic, (_lt_magic==0x4bb45aa5)?_n("OK"):_n("NA"));
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printf_P(_n(" _lt_size = 0x%04x (%d)\n"), _lt_size, _lt_size);
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printf_P(_n(" _lt_count = 0x%04x (%d)\n"), _lt_count, _lt_count);
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printf_P(_n(" _lt_chsum = 0x%04x\n"), _lt_chsum);
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printf_P(_n(" _lt_resv0 = 0x%04x\n"), _lt_resv0);
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printf_P(_n(" _lt_resv1 = 0x%08lx\n"), _lt_resv1);
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if (_lt_magic != 0x4bb45aa5) return 0;
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puts_P(_n(" strings:\n"));
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uint16_t ui = ((((uint16_t)&_SEC_LANG) + 0x00ff) & 0xff00); //table pointer
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for (ui = 0; ui < _lt_count; ui++)
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fprintf_P(out, _n(" %3d %S\n"), ui, lang_get_sec_lang_str_by_id(ui));
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return _lt_count;
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}
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#endif //DEBUG_SEC_LANG
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const char MSG_LANGUAGE_NAME[] PROGMEM_I1 = ISTR("English"); ////c=0 r=0
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