QUtf8Decoder Class Reference

Inheritance diagram for QUtf8Decoder:

Public Member Functions
	QUtf8Decoder ()
QString	toUnicode (const char *chars, int len)
Public Member Functions inherited from QTextDecoder
virtual	~QTextDecoder ()

Private Attributes
ushort	uc
int	need

Detailed Description

Definition at line 120 of file qutfcodec.cpp.

Constructor & Destructor Documentation

QUtf8Decoder::QUtf8Decoder ( )

inline

Definition at line 124 of file qutfcodec.cpp.

                   : need(0)
    {
    }

Member Function Documentation

QString QUtf8Decoder::toUnicode ( const char *  chars, int  len  )

inlinevirtual

Converts the first len bytes at chars to Unicode, returning the result.

If not all characters are used (eg. only part of a multi-byte encoding is at the end of the characters), the decoder remembers enough state to continue with the next call to this function.

Implements QTextDecoder.

Definition at line 128 of file qutfcodec.cpp.

    {
        QString result;
        for (int i=0; i<len; i++) {
            uchar ch = chars[i];
            if (need) {
                if ( (ch&0xc0) == 0x80 ) {
                    uc = (uc << 6) | (ch & 0x3f);
                    need--;
                    if ( !need ) {
                        result += QChar(uc);
                    }
                } else {
                    // error
                    result += QChar::replacement;
                    need = 0;
                }
            } else {
                if ( ch < 128 ) {
                    result += QChar(ch);
                } else if ( (ch&0xe0) == 0xc0 ) {
                    uc = ch &0x1f;
                    need = 1;
                } else if ( (ch&0xf0) == 0xe0 ) {
                    uc = ch &0x0f;
                    need = 2;
                }
            }
        }
        return result;
    }

Member Data Documentation

int QUtf8Decoder::need

private

Definition at line 122 of file qutfcodec.cpp.

ushort QUtf8Decoder::uc

private

Definition at line 121 of file qutfcodec.cpp.

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The documentation for this class was generated from the following file:

• doxygen-1.8.11/qtools/qutfcodec.cpp