[wxWidgets.git] / src / stc / scintilla / src / UniConversion.h

// Scintilla source code edit control
/** @file UniConversion.h
 ** Functions to handle UTF-8 and UTF-16 strings.
 **/
// Copyright 1998-2001 by Neil Hodgson <neilh@scintilla.org>
// The License.txt file describes the conditions under which this software may be distributed.

const int UTF8MaxBytes = 4;

unsigned int UTF8Length(const wchar_t *uptr, unsigned int tlen);
void UTF8FromUTF16(const wchar_t *uptr, unsigned int tlen, char *putf, unsigned int len);
unsigned int UTF8CharLength(unsigned char ch);
unsigned int UTF16Length(const char *s, unsigned int len);
unsigned int UTF16FromUTF8(const char *s, unsigned int len, wchar_t *tbuf, unsigned int tlen);

extern int UTF8BytesOfLead[256];
void UTF8BytesOfLeadInitialise();

inline bool UTF8IsTrailByte(int ch) {
        return (ch >= 0x80) && (ch < 0xc0);
}

inline bool UTF8IsAscii(int ch) {
        return ch < 0x80;
}

enum { UTF8MaskWidth=0x7, UTF8MaskInvalid=0x8 };
int UTF8Classify(const unsigned char *us, int len);