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#include "macros.h"
#include "unicode/prop.h"
#define M(...) ((struct rview)_(__VA_ARGS__))
#define _(...) \
{(const rune[]){__VA_ARGS__}, lengthof(((const rune[]){__VA_ARGS__}))}
struct rview
uprop_get_lc(rune ch, struct lcctx ctx)
{
constexpr rune COMB_GRAVE = 0x300;
constexpr rune COMB_ACUTE = 0x301;
constexpr rune COMB_TILDE = 0x303;
constexpr rune COMB_DOT_ABOVE = 0x307;
if (ch == U'Σ')
return ctx.final_sigma ? M(U'ς') : M(U'σ');
if (ch == U'İ')
return ctx.az_or_tr ? M('i') : M('i', COMB_DOT_ABOVE);
if (ctx.lt) {
if (ctx.more_above) {
switch (ch) {
case 'I':
return M('i', COMB_DOT_ABOVE);
case 'J':
return M('j', COMB_DOT_ABOVE);
case U'Į':
return M(U'į', COMB_DOT_ABOVE);
}
}
switch (ch) {
case U'Ì':
return M('i', COMB_DOT_ABOVE, COMB_GRAVE);
case U'Í':
return M('i', COMB_DOT_ABOVE, COMB_ACUTE);
case U'Ĩ':
return M('i', COMB_DOT_ABOVE, COMB_TILDE);
}
}
if (ctx.az_or_tr) {
if (ch == COMB_DOT_ABOVE && ctx.after_I)
return M();
if (ch == 'I' && !ctx.before_dot)
return M(U'ı');
}
ch = uprop_get_slc(ch);
return M(ch);
}
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