hyperlinkrecord.java

来自「EXCEL read and write」· Java 代码 · 共 529 行 · 第 1/2 页

        int idx = address.indexOf('\u0000');
        return idx == -1 ? address : address.substring(0, idx);
    }

    /**
     * Hypelink address. Depending on the hyperlink type it can be URL, e-mail, patrh to a file, etc.
     *
     * @param address  the address of this hyperlink
     */
    public void setAddress(String address)
    {
        this.address = address + '\u0000';
    }

    /**
     * Link options. Must be a combination of HLINK_* constants.
     */
    public int getLinkOptions(){
        return link_opts;
    }

    /**
     * Label options
     */
    public int getLabelOptions(){
        return label_opts;
    }

    /**
     * Options for a file link
     */
    public int getFileOptions(){
        return file_opts;
    }

    public byte[] getTail(){
        return tail;
    }

    /**
     * @param in the RecordInputstream to read the record from
     */
    public HyperlinkRecord(RecordInputStream in)
    {
        try {
            rwFirst = in.readShort();
            rwLast = in.readUShort();
            colFirst = in.readShort();
            colLast = in.readShort();

            // 16-byte GUID
            guid = new byte[16];
            in.read(guid);

            label_opts = in.readInt();
            link_opts = in.readInt();

            if ((link_opts & HLINK_LABEL) != 0){
                int label_len = in.readInt();
                label = in.readUnicodeLEString(label_len);
            }

            if ((link_opts & HLINK_URL) != 0){
                moniker = new byte[16];
                in.read(moniker);

                if(Arrays.equals(URL_MONIKER, moniker)){
                    int len = in.readInt();

                    address = in.readUnicodeLEString(len/2);

                    tail = in.readRemainder();
                } else if (Arrays.equals(FILE_MONIKER, moniker)){
                    file_opts = in.readShort();

                    int len = in.readInt();

                    byte[] path_bytes = new byte[len];
                    in.read(path_bytes);

                    address = new String(path_bytes);

                    tail = in.readRemainder();
                }
            } else if((link_opts & HLINK_PLACE) != 0){
                int len = in.readInt();
                address = in.readUnicodeLEString(len);
            }
        } catch (IOException e){
            throw new RuntimeException(e);
        }

    }

    public short getSid()
    {
        return HyperlinkRecord.sid;
    }

    public int serialize(int offset, byte[] data)
    {
        int pos = offset;
        LittleEndian.putShort(data, pos, sid); pos += 2;
        LittleEndian.putShort(data, pos, ( short )(getRecordSize()-4)); pos += 2;
        LittleEndian.putUShort(data, pos, rwFirst); pos += 2;
        LittleEndian.putUShort(data, pos, rwLast); pos += 2;
        LittleEndian.putShort(data, pos, colFirst); pos += 2;
        LittleEndian.putShort(data, pos, colLast); pos += 2;

        System.arraycopy(guid, 0, data, pos, guid.length); pos += guid.length;

        LittleEndian.putInt(data, pos, label_opts); pos += 4;
        LittleEndian.putInt(data, pos, link_opts); pos += 4;

        if ((link_opts & HLINK_LABEL) != 0){
            LittleEndian.putInt(data, pos, label.length()); pos += 4;
            StringUtil.putUnicodeLE(label, data, pos);  pos += label.length()*2;
        }
        if ((link_opts & HLINK_URL) != 0){
            System.arraycopy(moniker, 0, data, pos, moniker.length); pos += moniker.length;
            if(Arrays.equals(URL_MONIKER, moniker)){
                LittleEndian.putInt(data, pos, address.length()*2 + tail.length); pos += 4;
                StringUtil.putUnicodeLE(address, data, pos);  pos += address.length()*2;
                if(tail.length > 0){
                    System.arraycopy(tail, 0, data, pos, tail.length); pos += tail.length;
                }
            } else if (Arrays.equals(FILE_MONIKER, moniker)){
                LittleEndian.putShort(data, pos, file_opts); pos += 2;
                LittleEndian.putInt(data, pos, address.length()); pos += 4;
                byte[] bytes = address.getBytes();
                System.arraycopy(bytes, 0, data, pos, bytes.length); pos += bytes.length;
                if(tail.length > 0){
                    System.arraycopy(tail, 0, data, pos, tail.length); pos += tail.length;
                }
            }
        } else if((link_opts & HLINK_PLACE) != 0){
            LittleEndian.putInt(data, pos, address.length()); pos += 4;
            StringUtil.putUnicodeLE(address, data, pos);  pos += address.length()*2;
        }
    	return getRecordSize();
    }

    public int getRecordSize()
    {
        int size = 4;
        size += 2 + 2 + 2 + 2;  //rwFirst, rwLast, colFirst, colLast
        size += guid.length;
        size += 4;  //label_opts
        size += 4;  //link_opts
        if ((link_opts & HLINK_LABEL) != 0){
            size += 4;  //link length
            size += label.length()*2;
        }
        if ((link_opts & HLINK_URL) != 0){
            size += moniker.length;  //moniker length
            if(Arrays.equals(URL_MONIKER, moniker)){
                size += 4;  //address length
                size += address.length()*2;
                size += tail.length;
            } else if (Arrays.equals(FILE_MONIKER, moniker)){
                size += 2;  //file_opts
                size += 4;  //address length
                size += address.length();
                size += tail.length;
            }
        } else if((link_opts & HLINK_PLACE) != 0){
            size += 4;  //address length
            size += address.length()*2;
        }
        return size;
    }

    public String toString()
    {
        StringBuffer buffer = new StringBuffer();

        buffer.append("[HYPERLINK RECORD]\n");
        buffer.append("    .rwFirst            = ").append(Integer.toHexString(getFirstRow())).append("\n");
        buffer.append("    .rwLast         = ").append(Integer.toHexString(getLastRow())).append("\n");
        buffer.append("    .colFirst            = ").append(Integer.toHexString(getFirstColumn())).append("\n");
        buffer.append("    .colLast         = ").append(Integer.toHexString(getLastColumn())).append("\n");
        buffer.append("    .guid        = ").append(HexDump.toHex(guid)).append("\n");
        buffer.append("    .label_opts          = ").append(label_opts).append("\n");
        buffer.append("    .label          = ").append(getLabel()).append("\n");
        if((link_opts & HLINK_URL) != 0){
            buffer.append("    .moniker          = ").append(HexDump.toHex(moniker)).append("\n");
        }
        buffer.append("    .address            = ").append(getAddress()).append("\n");
        buffer.append("[/HYPERLINK RECORD]\n");
        return buffer.toString();
    }

    /**
     * Initialize a new url link
     */
    public void newUrlLink(){
        rwFirst = 0;
        rwLast = 0;
        colFirst = 0;
        colLast = 0;
        guid = STD_MONIKER;
        label_opts = 0x2;
        link_opts = HLINK_URL | HLINK_ABS | HLINK_LABEL;
        label = "" + '\u0000';
        moniker = URL_MONIKER;
        address = "" + '\u0000';
        tail = URL_TAIL;
    }

    /**
     * Initialize a new file link
     */
    public void newFileLink(){
        rwFirst = 0;
        rwLast = 0;
        colFirst = 0;
        colLast = 0;
        guid = STD_MONIKER;
        label_opts = 0x2;
        link_opts = HLINK_URL | HLINK_LABEL;
        file_opts = 0;
        label = "" + '\u0000';
        moniker = FILE_MONIKER;
        address = "" + '\0';
        tail = FILE_TAIL;
    }

    /**
     * Initialize a new document link
     */
    public void newDocumentLink(){
        rwFirst = 0;
        rwLast = 0;
        colFirst = 0;
        colLast = 0;
        guid = STD_MONIKER;
        label_opts = 0x2;
        link_opts = HLINK_LABEL | HLINK_PLACE;
        label = "" + '\u0000';
        moniker = FILE_MONIKER;
        address = "" + '\0';
        tail = new byte[]{};
    }

    public Object clone() {
        HyperlinkRecord rec = new HyperlinkRecord();
        rec.rwFirst = rwFirst;
        rec.rwLast = rwLast;
        rec.colFirst = colFirst;
        rec.colLast = colLast;
        rec.guid = guid;
        rec.label_opts = label_opts;
        rec.link_opts = link_opts;
        rec.file_opts = file_opts;
        rec.label = label;
        rec.address = address;
        rec.moniker = moniker;
        rec.tail = tail;
        return rec;
    }


}