src/scratchpad/ooxml-src/org/apache/poi/hssf/model/SharedStringsTable.java

   1 /* ====================================================================
   2    Licensed to the Apache Software Foundation (ASF) under one or more
   3    contributor license agreements.  See the NOTICE file distributed with
   4    this work for additional information regarding copyright ownership.
   5    The ASF licenses this file to You under the Apache License, Version 2.0
   6    (the "License"); you may not use this file except in compliance with
   7    the License.  You may obtain a copy of the License at
   8
   9        http://www.apache.org/licenses/LICENSE-2.0
  10
  11    Unless required by applicable law or agreed to in writing, software
  12    distributed under the License is distributed on an "AS IS" BASIS,
  13    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  14    See the License for the specific language governing permissions and
  15    limitations under the License.
  16 ==================================================================== */
  17
  18 package org.apache.poi.hssf.model;
  19
  20 import java.io.IOException;
  21 import java.io.OutputStream;
  22 import java.util.LinkedList;
  23
  24 import org.apache.xmlbeans.XmlException;
  25 import org.openxml4j.opc.PackagePart;
  26 import org.openxmlformats.schemas.spreadsheetml.x2006.main.CTRst;
  27 import org.openxmlformats.schemas.spreadsheetml.x2006.main.CTSst;
  28 import org.openxmlformats.schemas.spreadsheetml.x2006.main.SstDocument;
  29
  30
  31 public class SharedStringsTable extends LinkedList<String> {
  32     public static final String MAIN_SML_NS_URI = "http://schemas.openxmlformats.org/spreadsheetml/2006/main";
  33
  34     private SstDocument doc;
  35     private PackagePart part;
  36
  37     public SharedStringsTable(PackagePart part) throws IOException, XmlException {
  38         this.part = part;
  39         doc = SstDocument.Factory.parse(
  40                         part.getInputStream()
  41         );
  42         read();
  43     }
  44
  45     private void read() {
  46         CTRst[] sts = doc.getSst().getSiArray();
  47         for (int i = 0; i < sts.length; i++) {
  48                         add(sts[i].getT());
  49                 }
  50     }
  51
  52     /**
  53      * Writes the current shared strings table into
  54      *  the associated OOXML PackagePart
  55      */
  56     public void write() throws IOException {
  57         CTSst sst = doc.getSst();
  58
  59         // Remove the old list
  60         for(int i=sst.sizeOfSiArray() - 1; i>=0; i--) {
  61                 sst.removeSi(i);
  62         }
  63
  64         // Add the new one
  65         for(String s : this) {
  66                 sst.addNewSi().setT(s);
  67         }
  68
  69         // Update the counts
  70         sst.setCount(this.size());
  71         sst.setUniqueCount(this.size());
  72
  73         // Write out
  74         OutputStream out = part.getOutputStream();
  75         doc.save(out);
  76         out.close();
  77     }
  78 }