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bidi: barcket handle fixes

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This commit is contained in:
Gabor Kiss-Vamosi 2019-10-27 10:21:37 +01:00
parent 57a8ee8e32
commit 081b2c2271
1 changed files with 9 additions and 8 deletions
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17
src/lv_misc/lv_bidi.c
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@ -34,7 +34,7 @@ static uint32_t get_next_paragraph(const char * txt);
static lv_bidi_dir_t get_next_run(const char * txt, lv_bidi_dir_t base_dir, uint32_t * len);
static void rtl_reverse(char * dest, const char * src, uint32_t len);
static uint32_t char_change_to_pair(uint32_t letter);
static lv_bidi_dir_t bracket_process(const uint8_t * txt, uint32_t next_pos, uint32_t len, uint32_t letter, lv_bidi_dir_t base_dir);
static lv_bidi_dir_t bracket_process(const char * txt, uint32_t next_pos, uint32_t len, uint32_t letter, lv_bidi_dir_t base_dir);
/**********************
* STATIC VARIABLES
@ -54,8 +54,6 @@ static uint8_t br_stack_p;
void lv_bidi_process(const char * str_in, char * str_out, lv_bidi_dir_t base_dir)
{
br_stack_p = 0;
if(base_dir == LV_BIDI_DIR_AUTO) base_dir = lv_bidi_detect_base_dir(str_in);
uint32_t par_start = 0;
@ -159,6 +157,9 @@ static void process_paragraph(const char * str_in, char * str_out, uint32_t len,
lv_bidi_dir_t dir = base_dir;
/*Empty the bracket stack*/
br_stack_p = 0;
/*Process neutral chars in the beginning*/
while(rd < len) {
uint32_t letter = lv_txt_encoded_next(str_in, &rd);
@ -218,14 +219,14 @@ static lv_bidi_dir_t get_next_run(const char * txt, lv_bidi_dir_t base_dir, uint
letter = lv_txt_encoded_next(txt, NULL);
lv_bidi_dir_t dir = lv_bidi_get_letter_dir(letter);
if(dir == LV_BIDI_DIR_NEUTRAL) dir = bracket_process(txt, 0, len, letter, base_dir);
if(dir == LV_BIDI_DIR_NEUTRAL) dir = bracket_process(txt, 0, *len, letter, base_dir);
/*Find the first strong char. Skip the neutrals*/
while(dir == LV_BIDI_DIR_NEUTRAL || dir == LV_BIDI_DIR_WEAK) {
letter = lv_txt_encoded_next(txt, &i);
dir = lv_bidi_get_letter_dir(letter);
if(dir == LV_BIDI_DIR_NEUTRAL) dir = bracket_process(txt, i, len, letter, base_dir);
if(dir == LV_BIDI_DIR_NEUTRAL) dir = bracket_process(txt, i, *len, letter, base_dir);
if(txt[i] == '\0' || txt[i] == '\n' || txt[i] == '\r') {
*len = i;
@ -243,7 +244,7 @@ static lv_bidi_dir_t get_next_run(const char * txt, lv_bidi_dir_t base_dir, uint
while(txt[i] != '\0'&& txt[i] != '\n' && txt[i] != '\r') {
letter = lv_txt_encoded_next(txt, &i);
next_dir = lv_bidi_get_letter_dir(letter);
if(dir == LV_BIDI_DIR_NEUTRAL) dir = bracket_process(txt, i, len, letter, base_dir);
if(dir == LV_BIDI_DIR_NEUTRAL) dir = bracket_process(txt, i, *len, letter, base_dir);
/*New dir found?*/
if((next_dir == LV_BIDI_DIR_RTL || next_dir == LV_BIDI_DIR_LTR) && next_dir != run_dir) {
@ -335,7 +336,7 @@ static uint32_t char_change_to_pair(uint32_t letter)
return letter;
}
static lv_bidi_dir_t bracket_process(const uint8_t * txt, uint32_t next_pos, uint32_t len, uint32_t letter, lv_bidi_dir_t base_dir)
static lv_bidi_dir_t bracket_process(const char * txt, uint32_t next_pos, uint32_t len, uint32_t letter, lv_bidi_dir_t base_dir)
{
if(br_stack_p >= LV_BIDI_BRACKLET_DEPTH) return LV_BIDI_DIR_NEUTRAL;
@ -396,7 +397,7 @@ static lv_bidi_dir_t bracket_process(const uint8_t * txt, uint32_t next_pos, uin
/*The letter was an opening bracket*/
if(bracket_left[i] != '\0') {
if(bracket_dir == LV_BIDI_DIR_NEUTRAL) break;
if(bracket_dir == LV_BIDI_DIR_NEUTRAL) return bracket_dir;
br_stack[br_stack_p].bracklet_pos = i;
br_stack[br_stack_p].dir = bracket_dir;