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// Scintilla source code edit control
/** @file UnicodeFromUTF8.h
** Lexer infrastructure.
**/
// Copyright 2013 by Neil Hodgson <neilh@scintilla.org>
// This file is in the public domain.
#ifndef UNICODEFROMUTF8_H
#define UNICODEFROMUTF8_H
#ifdef SCI_NAMESPACE
namespace Scintilla {
#endif
inline int UnicodeFromUTF8(const unsigned char *us) {
if (us[0] < 0xC2) {
return us[0];
} else if (us[0] < 0xE0) {
return ((us[0] & 0x1F) << 6) + (us[1] & 0x3F);
} else if (us[0] < 0xF0) {
return ((us[0] & 0xF) << 12) + ((us[1] & 0x3F) << 6) + (us[2] & 0x3F);
} else if (us[0] < 0xF5) {
return ((us[0] & 0x7) << 18) + ((us[1] & 0x3F) << 12) + ((us[2] & 0x3F) << 6) + (us[3] & 0x3F);
}
return us[0];
}
#ifdef SCI_NAMESPACE
}
#endif
#endif
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