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