1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
|
/**
* @file lv_text_ap.c
*
*/
/*********************
* INCLUDES
*********************/
#include "lv_bidi.h"
#include "lv_text_private.h"
#include "lv_text_ap.h"
#include "lv_types.h"
#include "../stdlib/lv_mem.h"
#include "../draw/lv_draw.h"
/*********************
* DEFINES
*********************/
/**********************
* TYPEDEFS
**********************/
typedef struct {
uint8_t char_offset;
uint16_t char_end_form;
int8_t char_beginning_form_offset;
int8_t char_middle_form_offset;
int8_t char_isolated_form_offset;
struct {
uint8_t conj_to_previous;
uint8_t conj_to_next;
} ap_chars_conjunction;
} ap_chars_map_t;
/**********************
* STATIC PROTOTYPES
**********************/
#if LV_USE_ARABIC_PERSIAN_CHARS == 1
static uint32_t lv_ap_get_char_index(uint16_t c);
static uint32_t lv_text_lam_alef(uint32_t ch_curr, uint32_t ch_next);
static bool lv_text_is_arabic_vowel(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, 1}}, // 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
{30, 0x0640, 0, 0, 0, {1, 1}}, // - (mad, hyphen)
{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, 0xFEF0, 0, 0, -1, {1, 0}}, // ى
{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, 0, {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_text_ap_calc_bytes_count(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_text_get_encoded_length(txt);
i = 0;
j = 0;
while(i < txt_length) {
ch_enc = lv_text_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 < 0x80)
chars_cnt++;
else if(ch_enc < 0x0800)
chars_cnt += 2;
else if(ch_enc < 0x010000)
chars_cnt += 3;
else
chars_cnt += 4;
i++;
}
return chars_cnt + 1;
}
void lv_text_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;
uint32_t * ch_fin;
char * txt_out_temp;
txt_length = lv_text_get_encoded_length(txt);
ch_enc = (uint32_t *)lv_malloc(sizeof(uint32_t) * (txt_length + 1));
ch_fin = (uint32_t *)lv_malloc(sizeof(uint32_t) * (txt_length + 1));
i = 0;
j = 0;
while(j < txt_length)
ch_enc[j++] = lv_text_encoded_next(txt, &i);
ch_enc[j] = 0;
i = 0;
j = 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(lv_text_is_arabic_vowel(ch_enc[i])) { // Current character is a vowel
ch_fin[j] = ch_enc[i];
i++;
j++;
continue; // Skip this character
}
else if(lv_text_is_arabic_vowel(ch_enc[i + 1])) { // Next character is a vowel
idx_next = lv_ap_get_char_index(ch_enc[i + 2]); // Skip the vowel character to join with the character after it
}
if(index_current == LV_UNDEF_ARABIC_PERSIAN_CHARS) {
ch_fin[j] = ch_enc[i];
j++;
i++;
idx_previous = LV_UNDEF_ARABIC_PERSIAN_CHARS;
continue;
}
uint8_t conjunction_to_previous = (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;
uint32_t lam_alef = lv_text_lam_alef(index_current, idx_next);
if(lam_alef) {
if(conjunction_to_previous) {
lam_alef ++;
}
ch_fin[j] = lam_alef;
idx_previous = LV_UNDEF_ARABIC_PERSIAN_CHARS;
i += 2;
j++;
continue;
}
if(conjunction_to_previous && conjunction_to_next)
ch_fin[j] = ap_chars_map[index_current].char_end_form + ap_chars_map[index_current].char_middle_form_offset;
else if(!conjunction_to_previous && conjunction_to_next)
ch_fin[j] = ap_chars_map[index_current].char_end_form + ap_chars_map[index_current].char_beginning_form_offset;
else if(conjunction_to_previous && !conjunction_to_next)
ch_fin[j] = ap_chars_map[index_current].char_end_form;
else
ch_fin[j] = ap_chars_map[index_current].char_end_form + ap_chars_map[index_current].char_isolated_form_offset;
idx_previous = index_current;
i++;
j++;
}
ch_fin[j] = 0;
for(i = 0; i < txt_length; i++)
ch_enc[i] = 0;
for(i = 0; i < j; i++)
ch_enc[i] = ch_fin[i];
lv_free(ch_fin);
txt_out_temp = txt_out;
i = 0;
while(i < txt_length) {
if(ch_enc[i] < 0x80) {
*(txt_out_temp++) = ch_enc[i] & 0xFF;
}
else if(ch_enc[i] < 0x0800) {
*(txt_out_temp++) = ((ch_enc[i] >> 6) & 0x1F) | 0xC0;
*(txt_out_temp++) = ((ch_enc[i] >> 0) & 0x3F) | 0x80;
}
else if(ch_enc[i] < 0x010000) {
*(txt_out_temp++) = ((ch_enc[i] >> 12) & 0x0F) | 0xE0;
*(txt_out_temp++) = ((ch_enc[i] >> 6) & 0x3F) | 0x80;
*(txt_out_temp++) = ((ch_enc[i] >> 0) & 0x3F) | 0x80;
}
else if(ch_enc[i] < 0x110000) {
*(txt_out_temp++) = ((ch_enc[i] >> 18) & 0x07) | 0xF0;
*(txt_out_temp++) = ((ch_enc[i] >> 12) & 0x3F) | 0x80;
*(txt_out_temp++) = ((ch_enc[i] >> 6) & 0x3F) | 0x80;
*(txt_out_temp++) = ((ch_enc[i] >> 0) & 0x3F) | 0x80;
}
i++;
}
*(txt_out_temp) = '\0';
lv_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;
else if(c == ap_chars_map[i].char_end_form //is it an End form
|| c == (ap_chars_map[i].char_end_form + ap_chars_map[i].char_beginning_form_offset) //is it a Beginning form
|| c == (ap_chars_map[i].char_end_form + ap_chars_map[i].char_middle_form_offset) //is it a middle form
|| c == (ap_chars_map[i].char_end_form + ap_chars_map[i].char_isolated_form_offset)) { //is it an isolated form
return i;
}
}
return LV_UNDEF_ARABIC_PERSIAN_CHARS;
}
static uint32_t lv_text_lam_alef(uint32_t ch_curr, uint32_t ch_next)
{
uint32_t ch_code = 0;
if(ap_chars_map[ch_curr].char_offset != 34) {
return 0;
}
if(ch_next == LV_UNDEF_ARABIC_PERSIAN_CHARS) {
return 0;
}
ch_code = ap_chars_map[ch_next].char_offset + LV_AP_ALPHABET_BASE_CODE;
if(ch_code == 0x0622) {
return 0xFEF5; // (lam-alef) mad
}
if(ch_code == 0x0623) {
return 0xFEF7; // (lam-alef) top hamza
}
if(ch_code == 0x0625) {
return 0xFEF9; // (lam-alef) bot hamza
}
if(ch_code == 0x0627) {
return 0xFEFB; // (lam-alef) alef
}
return 0;
}
static bool lv_text_is_arabic_vowel(uint16_t c)
{
return (c >= 0x064B) && (c <= 0x0652);
}
#endif
|
