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