59 lines
1.6 KiB
C++
59 lines
1.6 KiB
C++
// Scintilla source code edit control
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/** @file UniConversion.h
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** Functions to handle UTF-8 and UTF-16 strings.
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**/
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// Copyright 1998-2001 by Neil Hodgson <neilh@scintilla.org>
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// The License.txt file describes the conditions under which this software may be distributed.
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#ifndef UNICONVERSION_H
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#define UNICONVERSION_H
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#ifdef SCI_NAMESPACE
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namespace Scintilla {
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#endif
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const int UTF8MaxBytes = 4;
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unsigned int UTF8Length(const wchar_t *uptr, unsigned int tlen);
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void UTF8FromUTF16(const wchar_t *uptr, unsigned int tlen, char *putf, unsigned int len);
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unsigned int UTF8CharLength(unsigned char ch);
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unsigned int UTF16Length(const char *s, unsigned int len);
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unsigned int UTF16FromUTF8(const char *s, unsigned int len, wchar_t *tbuf, unsigned int tlen);
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extern int UTF8BytesOfLead[256];
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void UTF8BytesOfLeadInitialise();
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inline bool UTF8IsTrailByte(int ch) {
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return (ch >= 0x80) && (ch < 0xc0);
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}
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inline bool UTF8IsAscii(int ch) {
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return ch < 0x80;
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}
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enum { UTF8MaskWidth=0x7, UTF8MaskInvalid=0x8 };
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int UTF8Classify(const unsigned char *us, int len);
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// Similar to UTF8Classify but returns a length of 1 for invalid bytes
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// instead of setting the invalid flag
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int UTF8DrawBytes(const unsigned char *us, int len);
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// Line separator is U+2028 \xe2\x80\xa8
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// Paragraph separator is U+2029 \xe2\x80\xa9
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const int UTF8SeparatorLength = 3;
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inline bool UTF8IsSeparator(const unsigned char *us) {
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return (us[0] == 0xe2) && (us[1] == 0x80) && ((us[2] == 0xa8) || (us[2] == 0xa9));
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}
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// NEL is U+0085 \xc2\x85
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const int UTF8NELLength = 2;
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inline bool UTF8IsNEL(const unsigned char *us) {
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return (us[0] == 0xc2) && (us[1] == 0x85);
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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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