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