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#pragma once
#include <stdlib.h>
inline int isASCII(unsigned char c) {
return c < 128;
}
inline int isContinuation(unsigned char c) {
return c >= 128 && c < 192;
}
inline int is2ByteStarter(unsigned char c) {
return c >= 192 && c < 224;
}
inline int is3ByteStarter(unsigned char c) {
return c >= 224 && c < 240;
}
inline int is4ByteStarter(unsigned char c) {
return c >= 240 && c < 248;
}
inline int utf8DecodeErrorClass(int err) {
return err >> 12;
}
#define ERR_UNEXPECTED_CONTINUATION 0x1000
#define ERR_INVALID_UTF8_BYTE 0x2000
#define ERR_CONTINUATION_EXPECTED 0x3000
#define ERRC_UNEXPECTED_CONTINUATION 0x1
#define ERRC_INVALID_UTF8_BYTE 0x2
#define ERRC_CONTINUATION_EXPECTED 0x3
/*
Returns the next UTF-8 character and advances the string pointer.
This function does not consider the case when the current byte
does not align with any codepoint.
@param strRef a pointer to a pointer to the current character
@param codeRef where you want the resulting codepoint to be stored
@return
0 if everything went well
ERR_UNEXPECTED_CONTINUATION + 0x100 * bytes advanced + byte
if an unexpected continuation byte was found
ERR_INVALID_UTF8_BYTE + 0x100 * bytes advanced + byte
if an unexpected continuation byte was found
*/
int utf8Next(char** strRef, int* codeRef);
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