302 lines
9.3 KiB
C
302 lines
9.3 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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static uint32_t lv_txt_lam_alef(uint32_t ch_curr, uint32_t ch_next);
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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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{ 30, 0x0640, 0, 0, 0, { 1, 1 } }, // - (mad, hyphen)
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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, 0xFEF0, 0, 0, -1, { 1, 0 } }, // ى
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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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}
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if (ch_enc < 0x80) {
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chars_cnt++;
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} else if (ch_enc < 0x0800) {
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chars_cnt += 2;
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} else if (ch_enc < 0x010000) {
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chars_cnt += 3;
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} else {
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chars_cnt += 4;
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}
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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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uint32_t *ch_fin;
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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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ch_fin = (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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}
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ch_enc[j] = 0;
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i = 0;
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j = 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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ch_fin[j] = ch_enc[i];
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j++;
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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) ?
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0 :
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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) ?
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0 :
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ap_chars_map[idx_next].ap_chars_conjunction.conj_to_previous;
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uint32_t lam_alef = lv_txt_lam_alef(index_current, idx_next);
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if (lam_alef) {
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if (conjunction_to_previuse) {
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lam_alef++;
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}
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ch_fin[j] = lam_alef;
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idx_previous = LV_UNDEF_ARABIC_PERSIAN_CHARS;
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i += 2;
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j++;
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continue;
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}
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if (conjunction_to_previuse && conjunction_to_next) {
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ch_fin[j] = 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_fin[j] = 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_fin[j] = ap_chars_map[index_current].char_end_form;
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} else {
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ch_fin[j] = ap_chars_map[index_current].char_end_form + ap_chars_map[index_current].char_isolated_form_offset;
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}
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idx_previous = index_current;
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i++;
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j++;
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}
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ch_fin[j] = 0;
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for (i = 0; i < txt_length; i++) {
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ch_enc[i] = 0;
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}
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for (i = 0; i < j; i++) {
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ch_enc[i] = ch_fin[i];
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}
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lv_mem_free(ch_fin);
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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] < 0x80) {
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*(txt_out_temp++) = ch_enc[i] & 0xFF;
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} else if (ch_enc[i] < 0x0800) {
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*(txt_out_temp++) = ((ch_enc[i] >> 6) & 0x1F) | 0xC0;
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*(txt_out_temp++) = ((ch_enc[i] >> 0) & 0x3F) | 0x80;
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} else if (ch_enc[i] < 0x010000) {
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*(txt_out_temp++) = ((ch_enc[i] >> 12) & 0x0F) | 0xE0;
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*(txt_out_temp++) = ((ch_enc[i] >> 6) & 0x3F) | 0x80;
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*(txt_out_temp++) = ((ch_enc[i] >> 0) & 0x3F) | 0x80;
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} else if (ch_enc[i] < 0x110000) {
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*(txt_out_temp++) = ((ch_enc[i] >> 18) & 0x07) | 0xF0;
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*(txt_out_temp++) = ((ch_enc[i] >> 12) & 0x3F) | 0x80;
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*(txt_out_temp++) = ((ch_enc[i] >> 6) & 0x3F) | 0x80;
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*(txt_out_temp++) = ((ch_enc[i] >> 0) & 0x3F) | 0x80;
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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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} else if (c == ap_chars_map[i].char_end_form //is it an End form
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|| c == (ap_chars_map[i].char_end_form + ap_chars_map[i].char_begining_form_offset) //is it a Beginning form
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|| c == (ap_chars_map[i].char_end_form + ap_chars_map[i].char_middle_form_offset) //is it a middle form
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|| c == (ap_chars_map[i].char_end_form + ap_chars_map[i].char_isolated_form_offset)) //is it an isolated form
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{
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return i;
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}
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}
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return LV_UNDEF_ARABIC_PERSIAN_CHARS;
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}
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static uint32_t lv_txt_lam_alef(uint32_t ch_curr, uint32_t ch_next)
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{
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uint32_t ch_code = 0;
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if (ap_chars_map[ch_curr].char_offset != 34) {
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return 0;
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}
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if (ch_next == LV_UNDEF_ARABIC_PERSIAN_CHARS) {
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return 0;
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}
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ch_code = ap_chars_map[ch_next].char_offset + LV_AP_ALPHABET_BASE_CODE;
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if (ch_code == 0x0622) {
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return 0xFEF5; // (lam-alef) mad
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}
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if (ch_code == 0x0623) {
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return 0xFEF7; // (lam-alef) top hamza
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}
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if (ch_code == 0x0625) {
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return 0xFEF9; // (lam-alef) bot hamza
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}
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if (ch_code == 0x0627) {
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return 0xFEFB; // (lam-alef) alef
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}
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return 0;
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}
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#endif
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