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#pragma warning(push)
#pragma warning(disable: 4245)
extern "C" {
#include "utf8proc/utf8proc.c"
}
#pragma warning(pop)
bool rune_is_letter(Rune r) {
if (r < 0x80) {
if (r == '_') {
return true;
}
return ((cast(u32)r | 0x20) - 0x61) < 26;
}
switch (utf8proc_category(r)) {
case UTF8PROC_CATEGORY_LU:
case UTF8PROC_CATEGORY_LL:
case UTF8PROC_CATEGORY_LT:
case UTF8PROC_CATEGORY_LM:
case UTF8PROC_CATEGORY_LO:
return true;
}
return false;
}
bool rune_is_digit(Rune r) {
if (r < 0x80) {
return (cast(u32)r - '0') < 10;
}
return utf8proc_category(r) == UTF8PROC_CATEGORY_ND;
}
bool rune_is_letter_or_digit(Rune r) {
if (r < 0x80) {
if (r == '_') {
return true;
}
if (((cast(u32)r | 0x20) - 0x61) < 26) {
return true;
}
return (cast(u32)r - '0') < 10;
}
switch (utf8proc_category(r)) {
case UTF8PROC_CATEGORY_LU:
case UTF8PROC_CATEGORY_LL:
case UTF8PROC_CATEGORY_LT:
case UTF8PROC_CATEGORY_LM:
case UTF8PROC_CATEGORY_LO:
return true;
case UTF8PROC_CATEGORY_ND:
return true;
}
return false;
}
bool rune_is_whitespace(Rune r) {
switch (r) {
case ' ':
case '\t':
case '\n':
case '\r':
return true;
}
return false;
}
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