139 lines
4.4 KiB
Java
139 lines
4.4 KiB
Java
/* ====================================================================
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Licensed to the Apache Software Foundation (ASF) under one or more
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contributor license agreements. See the NOTICE file distributed with
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this work for additional information regarding copyright ownership.
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The ASF licenses this file to You under the Apache License, Version 2.0
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(the "License"); you may not use this file except in compliance with
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the License. You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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==================================================================== */
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package org.apache.poi.hssf.record;
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import java.util.Arrays;
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import org.apache.poi.util.LittleEndianOutput;
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import org.apache.poi.util.StringUtil;
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/**
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* Title: Write Access Record (0x005C)<p/>
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*
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* Description: Stores the username of that who owns the spreadsheet generator (on unix the user's
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* login, on Windoze its the name you typed when you installed the thing)
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* <p/>
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* REFERENCE: PG 424 Microsoft Excel 97 Developer's Kit (ISBN: 1-57231-498-2)
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* <p/>
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*
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* @author Andrew C. Oliver (acoliver at apache dot org)
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*/
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public final class WriteAccessRecord extends StandardRecord {
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public final static short sid = 0x005C;
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private static final byte PAD_CHAR = (byte) ' ';
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private static final int DATA_SIZE = 112;
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private String field_1_username;
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/** this record is always padded to a constant length */
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private byte[] padding;
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public WriteAccessRecord() {
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setUsername("");
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padding = new byte[DATA_SIZE - 3];
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}
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public WriteAccessRecord(RecordInputStream in) {
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if (in.remaining() > DATA_SIZE) {
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throw new RecordFormatException("Expected data size (" + DATA_SIZE + ") but got ("
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+ in.remaining() + ")");
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}
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// The string is always 112 characters (padded with spaces), therefore
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// this record can not be continued.
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int nChars = in.readUShort();
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int is16BitFlag = in.readUByte();
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int expectedPadSize = DATA_SIZE - 3;
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if ((is16BitFlag & 0x01) == 0x00) {
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field_1_username = StringUtil.readCompressedUnicode(in, nChars);
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expectedPadSize -= nChars;
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} else {
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field_1_username = StringUtil.readUnicodeLE(in, nChars);
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expectedPadSize -= nChars * 2;
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}
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padding = new byte[expectedPadSize];
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int padSize = in.remaining();
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in.readFully(padding, 0, padSize);
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if (padSize < expectedPadSize) {
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// this occurs in a couple of test examples: "42564.xls",
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// "bug_42794.xls"
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Arrays.fill(padding, padSize, expectedPadSize, PAD_CHAR);
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}
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}
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/**
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* set the username for the user that created the report. HSSF uses the
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* logged in user.
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*
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* @param username of the user who is logged in (probably "tomcat" or "apache")
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*/
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public void setUsername(String username) {
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boolean is16bit = StringUtil.hasMultibyte(username);
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int encodedByteCount = 3 + username.length() * (is16bit ? 2 : 1);
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int paddingSize = DATA_SIZE - encodedByteCount;
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if (paddingSize < 0) {
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throw new IllegalArgumentException("Name is too long: " + username);
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}
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padding = new byte[paddingSize];
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Arrays.fill(padding, PAD_CHAR);
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field_1_username = username;
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}
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/**
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* get the username for the user that created the report. HSSF uses the
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* logged in user. On natively created M$ Excel sheet this would be the name
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* you typed in when you installed it in most cases.
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*
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* @return username of the user who is logged in (probably "tomcat" or "apache")
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*/
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public String getUsername() {
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return field_1_username;
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}
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public String toString() {
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StringBuffer buffer = new StringBuffer();
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buffer.append("[WRITEACCESS]\n");
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buffer.append(" .name = ").append(field_1_username.toString()).append("\n");
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buffer.append("[/WRITEACCESS]\n");
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return buffer.toString();
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}
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public void serialize(LittleEndianOutput out) {
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String username = getUsername();
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boolean is16bit = StringUtil.hasMultibyte(username);
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out.writeShort(username.length());
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out.writeByte(is16bit ? 0x01 : 0x00);
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if (is16bit) {
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StringUtil.putUnicodeLE(username, out);
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} else {
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StringUtil.putCompressedUnicode(username, out);
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}
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out.write(padding);
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}
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protected int getDataSize() {
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return DATA_SIZE;
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}
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public short getSid() {
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return sid;
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}
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}
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