/** * @file lv_txt_ap.c * */ /********************* * INCLUDES *********************/ #include #include "lv_bidi.h" #include "lv_txt.h" #include "lv_txt_ap.h" #include "../lv_draw/lv_draw.h" /********************* * DEFINES *********************/ /********************** * TYPEDEFS **********************/ /********************** * STATIC PROTOTYPES **********************/ #if LV_USE_ARABIC_PERSIAN_CHARS == 1 static uint32_t lv_ap_get_char_index(uint16_t c); /********************** * STATIC VARIABLES **********************/ const ap_chars_map_t ap_chars_map[] = { /* {Key Offset, End, Beginning, Middle, Isolated, {conjunction}} */ {1, 0xFE84, -1, 0, -1, {1, 0}}, // أ {2, 0xFE86, -1, 0, -1, {1, 0}}, // ؤ {3, 0xFE88, -1, 0, -1, {1, 0}}, // ﺇ {4, 0xFE8A, 1, 2, -1, {1, 0}}, // ئ {5, 0xFE8E, -1, 0, -1, {1, 0}}, // آ {6, 0xFE90, 1, 2, -1, {1, 1}}, // ب {92, 0xFB57, 1, 2, -1, {1, 1}}, // پ {8, 0xFE96, 1, 2, -1, {1, 1}}, // ت {9, 0xFE9A, 1, 2, -1, {1, 1}}, // ث {10, 0xFE9E, 1, 2, -1, {1, 1}}, // ج {100, 0xFB7B, 1, 2, -1, {1, 1}}, // چ {11, 0xFEA2, 1, 2, -1, {1, 1}}, // ح {12, 0xFEA6, 1, 2, -1, {1, 1}}, // خ {13, 0xFEAA, -1, 0, -1, {1, 0}}, // د {14, 0xFEAC, -1, 0, -1, {1, 0}}, // ذ {15, 0xFEAE, -1, 0, -1, {1, 0}}, // ر {16, 0xFEB0, -1, 0, -1, {1, 0}}, // ز {118, 0xFB8B, -1, 0, -1, {1, 0}}, // ژ {17, 0xFEB2, 1, 2, -1, {1, 1}}, // س {18, 0xFEB6, 1, 2, -1, {1, 1}}, // ش {19, 0xFEBA, 1, 2, -1, {1, 1}}, // ص {20, 0xFEBE, 1, 2, -1, {1, 1}}, // ض {21, 0xFEC2, 1, 2, -1, {1, 1}}, // ط {22, 0xFEC6, 1, 2, -1, {1, 1}}, // ظ {23, 0xFECA, 1, 2, -1, {1, 1}}, // ع {24, 0xFECE, 1, 2, -1, {1, 1}}, // غ {31, 0xFED2, 1, 2, -1, {1, 1}}, // ف {32, 0xFED6, 1, 2, -1, {1, 1}}, // ق {135, 0xFB8F, 1, 2, -1, {1, 1}}, // ک {33, 0xFEDA, 1, 2, -1, {1, 1}}, // ﻙ {141, 0xFB93, 1, 2, -1, {1, 1}}, // گ {34, 0xFEDE, 1, 2, -1, {1, 1}}, // ل {35, 0xFEE2, 1, 2, -1, {1, 1}}, // م {36, 0xFEE6, 1, 2, -1, {1, 1}}, // ن {38, 0xFEEE, -1, 0, -1, {1, 0}}, // و {37, 0xFEEA, 1, 2, -1, {1, 1}}, // ه {39, 0xFBFD, 1, 2, -1, {1, 1}}, // ي {40, 0xFEF2, 1, 2, -1, {1, 1}}, // ي {170, 0xFBFD, 1, 2, -1, {1, 1}}, // ی {7, 0xFE94, 1, 2, -1, {1, 0}}, // ة {206, 0x06F0, 1, 2, -1, {0, 0}}, // ۰ {207, 0x06F1, 0, 0, 0, {0, 0}}, // ۱ {208, 0x06F2, 0, 0, 0, {0, 0}}, // ۲ {209, 0x06F3, 0, 0, 0, {0, 0}}, // ۳ {210, 0x06F4, 0, 0, 0, {0, 0}}, // ۴ {211, 0x06F5, 0, 0, 0, {0, 0}}, // ۵ {212, 0x06F6, 0, 0, 0, {0, 0}}, // ۶ {213, 0x06F7, 0, 0, 0, {0, 0}}, // ۷ {214, 0x06F8, 0, 0, 0, {0, 0}}, // ۸ {215, 0x06F9, 0, 0, 0, {0, 0}}, // ۹ LV_AP_END_CHARS_LIST }; /********************** * MACROS **********************/ /********************** * GLOBAL FUNCTIONS **********************/ uint32_t lv_txt_ap_calc_bytes_cnt(const char * txt) { uint32_t txt_length = 0; uint32_t chars_cnt = 0; uint32_t current_ap_idx = 0; uint32_t i, j; uint32_t ch_enc; txt_length = lv_txt_get_encoded_length(txt); i = 0; j = 0; while(i < txt_length) { ch_enc = lv_txt_encoded_next(txt, &j); current_ap_idx = lv_ap_get_char_index(ch_enc); if(current_ap_idx != LV_UNDEF_ARABIC_PERSIAN_CHARS) ch_enc = ap_chars_map[current_ap_idx].char_end_form; if(ch_enc <= 0x7F) chars_cnt++; else if(ch_enc <= 0x7FFF) chars_cnt += 2; else chars_cnt += 3; i++; } return chars_cnt + 1; } void lv_txt_ap_proc(const char * txt, char * txt_out) { uint32_t txt_length = 0; uint32_t index_current, idx_next, idx_previous, i, j; uint32_t * ch_enc; char * txt_out_temp; txt_length = lv_txt_get_encoded_length(txt); ch_enc = (uint32_t *)lv_mem_alloc(sizeof(uint32_t) * (txt_length + 1)); i = 0; j = 0; while(j < txt_length) ch_enc[j++] = lv_txt_encoded_next(txt, &i); ch_enc[j] = 0; i = 0; idx_previous = LV_UNDEF_ARABIC_PERSIAN_CHARS; while(i < txt_length) { index_current = lv_ap_get_char_index(ch_enc[i]); idx_next = lv_ap_get_char_index(ch_enc[i + 1]); if(index_current == LV_UNDEF_ARABIC_PERSIAN_CHARS) { i++; idx_previous = LV_UNDEF_ARABIC_PERSIAN_CHARS; continue; } uint8_t conjunction_to_previuse = (i == 0 || idx_previous == LV_UNDEF_ARABIC_PERSIAN_CHARS) ? 0 : ap_chars_map[idx_previous].ap_chars_conjunction.conj_to_next; uint8_t conjunction_to_next = ((i == txt_length - 1) || idx_next == LV_UNDEF_ARABIC_PERSIAN_CHARS) ? 0 : ap_chars_map[idx_next].ap_chars_conjunction.conj_to_previous; if(conjunction_to_previuse && conjunction_to_next) ch_enc[i] = ap_chars_map[index_current].char_end_form + ap_chars_map[index_current].char_middle_form_offset; else if(!conjunction_to_previuse && conjunction_to_next) ch_enc[i] = ap_chars_map[index_current].char_end_form + ap_chars_map[index_current].char_begining_form_offset; else if(conjunction_to_previuse && !conjunction_to_next) ch_enc[i] = ap_chars_map[index_current].char_end_form; else ch_enc[i] = ap_chars_map[index_current].char_end_form + ap_chars_map[index_current].char_isolated_form_offset; idx_previous = index_current; i++; } txt_out_temp = txt_out; i = 0; while(i < txt_length) { if((ch_enc[i]) <= 0x7F) { *(txt_out_temp++) = ch_enc[i]; } else if(ch_enc[i] <= 0x7FFF) { *(txt_out_temp++) = 0xC0 | ((ch_enc[i] >> 6) & 0x3F); *(txt_out_temp++) = 0x80 | (ch_enc[i] & 0x3F); } else { *(txt_out_temp++) = 0xE0 | ((ch_enc[i] >> 12) & 0x3F); *(txt_out_temp++) = 0x80 | ((ch_enc[i] >> 6) & 0x3F); *(txt_out_temp++) = 0x80 | (ch_enc[i] & 0x3F); } i++; } *(txt_out_temp) = '\0'; lv_mem_free(ch_enc); } /********************** * STATIC FUNCTIONS **********************/ static uint32_t lv_ap_get_char_index(uint16_t c) { for(uint8_t i = 0; ap_chars_map[i].char_end_form; i++) { if(c == (ap_chars_map[i].char_offset + LV_AP_ALPHABET_BASE_CODE)) return i; } return LV_UNDEF_ARABIC_PERSIAN_CHARS; } #endif