/**
* Initializes line breaking context for a given language.
*
* @param[in,out] lbpCtx pointer to the line breaking context
* @param[in] ch the first character to process
* @param[in] lang language of the input
* @post the line breaking context is initialized
*/
void lb_init_break_context(
struct LineBreakContext* lbpCtx,
utf32_t ch,
const char* lang)
{
lbpCtx->lang = lang;
lbpCtx->lbpLang = get_lb_prop_lang(lang);
lbpCtx->lbcLast = LBP_Undefined;
lbpCtx->lbcNew = LBP_Undefined;
lbpCtx->lbcCur = resolve_lb_class(
get_char_lb_class_lang(ch, lbpCtx->lbpLang),
lbpCtx->lang);
treat_first_char(lbpCtx);
}
/**
* Updates LineBreakingContext for the next code point and returns
* the detected break.
*
* @param[in,out] lbpCtx pointer to the line breaking context
* @param[in] ch Unicode code point
* @return break result, one of #LINEBREAK_MUSTBREAK,
* #LINEBREAK_ALLOWBREAK, and #LINEBREAK_NOBREAK
* @post the line breaking context is updated
*/
int lb_process_next_char(
struct LineBreakContext *lbpCtx,
utf32_t ch )
{
int brk;
lbpCtx->lbcLast = lbpCtx->lbcNew;
lbpCtx->lbcNew = get_char_lb_class_lang(ch, lbpCtx->lbpLang);
brk = get_lb_result_simple(lbpCtx);
switch (brk)
{
case LINEBREAK_MUSTBREAK:
lbpCtx->lbcCur = resolve_lb_class(lbpCtx->lbcNew, lbpCtx->lang);
treat_first_char(lbpCtx);
break;
case LINEBREAK_UNDEFINED:
lbpCtx->lbcNew = resolve_lb_class(lbpCtx->lbcNew, lbpCtx->lang);
brk = get_lb_result_lookup(lbpCtx);
break;
default:
break;
}
return brk;
}
