writableworkbookimpl.java~

jxtl API Java中Excel的生成与导入解析参考文档

    {
      wsheet = (WritableSheetImpl) getSheet(0);
      wsheet.getSettings().setSelected(true);
    }

    // Write out the sheets
    for (int i = 0; i < getNumberOfSheets(); i++)
    {
      // first go back and modify the offset we wrote out for the
      // boundsheet record
      outputFile.setData
        (IntegerHelper.getFourBytes(outputFile.getPos()),
         boundsheetPos[i] + 4);

      wsheet = (WritableSheetImpl) getSheet(i);
      wsheet.write();
    }
  }

  /**
   * Produces a writable copy of the workbook passed in by 
   * creating copies of each sheet in the specified workbook and adding 
   * them to its own record
   * 
   * @param w the workbook to copy
   */
  private void copyWorkbook(Workbook w)
  {
    int numSheets = w.getNumberOfSheets();
    wbProtected = w.isProtected();
    Sheet s = null;
    WritableSheetImpl ws = null;
    for (int i = 0 ; i < numSheets; i++)
    {
      s = w.getSheet(i);
      ws = (WritableSheetImpl) createSheet(s.getName(),i, false);
      ws.copy(s);
    }
  }

  /**
   * Copies the specified sheet and places it at the index
   * specified by the parameter
   *
   * @param s the index of the sheet to copy
   * @param name the name of the new sheet
   * @param index the position of the new sheet
   */
  public void copySheet(int s, String name, int index)
  {
    WritableSheet sheet = getSheet(s);
    WritableSheetImpl ws = (WritableSheetImpl) createSheet(name, index);
    ws.copy(sheet);
  }

  /**
   * Copies the specified sheet and places it at the index
   * specified by the parameter
   *
   * @param s the name of the sheet to copy
   * @param name the name of the new sheet
   * @param index the position of the new sheet
   */
  public void copySheet(String s, String name, int index)
  {
    WritableSheet sheet = getSheet(s);
    WritableSheetImpl ws = (WritableSheetImpl) createSheet(name, index);
    ws.copy(sheet);
  }

  /**
   * Indicates whether or not this workbook is protected
   * 
   * @param prot protected flag
   */
  public void setProtected(boolean prot)
  {
    wbProtected = prot;
  }

  /**
   * Rationalizes the cell formats, and then passes the resultant XF index
   * mappings to each sheet in turn
   */
  private void rationalize()
  {
    IndexMapping fontMapping   = formatRecords.rationalizeFonts();
    IndexMapping formatMapping = formatRecords.rationalizeDisplayFormats();
    IndexMapping xfMapping     = formatRecords.rationalize(fontMapping, 
                                                           formatMapping);

    WritableSheetImpl wsi = null;
    for (int i = 0; i < sheets.size(); i++)
    {
      wsi = (WritableSheetImpl) sheets.get(i);
      wsi.rationalize(xfMapping, fontMapping, formatMapping);
    }
  }

  /**
   * Gets the internal sheet index for a sheet name
   *
   * @param name the sheet name
   * @return the internal sheet index
   */
  private int getInternalSheetIndex(String name)
  {
    int index = -1;
    String[] names = getSheetNames();
    for (int i = 0 ; i < names.length; i++)
    {
      if (name.equals(names[i]))
      {
        index = i;
        break;
      }
    }

    return index;
  }

  /**
   * Gets the name of the external sheet specified by the index
   *
   * @param index the external sheet index
   * @return the name of the external sheet
   */
  public String getExternalSheetName(int index)
  {
    int supbookIndex = externSheet.getSupbookIndex(index);
    SupbookRecord sr = (SupbookRecord) supbooks.get(supbookIndex);
    
    int firstTab = externSheet.getFirstTabIndex(index);
    
    if (sr.getType() == SupbookRecord.INTERNAL)
    {
      // It's an internal reference - get the name from the sheets list
      WritableSheet ws = getSheet(firstTab);

      return ws.getName();
    }
    else if (sr.getType() == SupbookRecord.EXTERNAL)
    {
      String name = sr.getFileName() + sr.getSheetName(firstTab);
      return name;
    }
    
    // An unknown supbook - return unkown
    return "[UNKNOWN]";
  }

  /**
   * Gets the name of the last external sheet specified by the index
   *
   * @param index the external sheet index
   * @return the name of the external sheet
   */
  public String getLastExternalSheetName(int index)
  {
    int supbookIndex = externSheet.getSupbookIndex(index);
    SupbookRecord sr = (SupbookRecord) supbooks.get(supbookIndex);
    
    int lastTab = externSheet.getLastTabIndex(index);
    
    if (sr.getType() == SupbookRecord.INTERNAL)
    {
      // It's an internal reference - get the name from the sheets list
      WritableSheet ws = getSheet(lastTab);

      return ws.getName();
    }
    else if (sr.getType() == SupbookRecord.EXTERNAL)
    {
      Assert.verify(false);
    }
    
    // An unknown supbook - return unkown
    return "[UNKNOWN]";
  }

  /**
   * Parsing of formulas is only supported for a subset of the available
   * biff version, so we need to test to see if this version is acceptable
   *
   * @return the BOF record, which 
   */
  public jxl.read.biff.BOFRecord getWorkbookBof()
  {
    return null;
  }


  /**
   * Gets the index of the external sheet for the name
   *
   * @param sheetName
   * @return the sheet index of the external sheet index
   */
  public int getExternalSheetIndex(int index)
  {
    if (externSheet == null)
    {
      return index;
    }

    Assert.verify(externSheet != null);

    int firstTab = externSheet.getFirstTabIndex(index);

    return firstTab;
  }

  /**
   * Gets the index of the external sheet for the name
   *
   * @param sheetName
   * @return the sheet index of the external sheet index
   */
  public int getLastExternalSheetIndex(int index)
  {
    if (externSheet == null)
    {
      return index;
    }

    Assert.verify(externSheet != null);

    int lastTab = externSheet.getLastTabIndex(index);

    return lastTab;
  }

  /**
   * Gets the external sheet index for the sheet name
   *
   * @param sheetName 
   * @return the sheet index or -1 if the sheet could not be found
   */
  public int getExternalSheetIndex(String sheetName)
  {
    if (externSheet == null)
    {
      externSheet = new ExternalSheetRecord();
      supbooks = new ArrayList();
      supbooks.add(new SupbookRecord(getNumberOfSheets(), settings));
    }

    // Iterate through the sheets records
    boolean found = false;
    Iterator i = sheets.iterator();
    int sheetpos = 0;
    WritableSheetImpl s = null;

    while (i.hasNext() && !found)
    {
      s = (WritableSheetImpl) i.next();
      
      if (s.getName().equals(sheetName))
      {
        found = true;
      }
      else
      {
        sheetpos++;
      }
    }

    if (found)
    {
      // Check that the supbook record at position zero is internal and
      // contains all the sheets
      SupbookRecord supbook = (SupbookRecord) supbooks.get(0);
      if (supbook.getType() != SupbookRecord.INTERNAL ||
          supbook.getNumberOfSheets() != getNumberOfSheets())
      {
        logger.warn("Cannot find sheet " + sheetName + " in supbook record");
      }
      
      return externSheet.getIndex(0, sheetpos);
    }

    // Check for square brackets
    int closeSquareBracketsIndex = sheetName.lastIndexOf(']');
    int openSquareBracketsIndex = sheetName.lastIndexOf('[');
    
    if (closeSquareBracketsIndex == -1 ||
        openSquareBracketsIndex == -1)
    {
      return -1;
    }

    String worksheetName = sheetName.substring(closeSquareBracketsIndex+1);
    String workbookName = sheetName.substring(openSquareBracketsIndex+1, 
                                              closeSquareBracketsIndex);
    String path = sheetName.substring(0, openSquareBracketsIndex);
    String fileName = path + workbookName;

    boolean supbookFound = false;
    SupbookRecord externalSupbook = null;
    int supbookIndex = -1;
    for (int ind = 0; ind < supbooks.size() && !supbookFound ; ind++)
    {
      externalSupbook = (SupbookRecord) supbooks.get(ind);
      if (externalSupbook.getType() == SupbookRecord.EXTERNAL &&
          externalSupbook.getFileName().equals(fileName))
      {
        supbookFound = true;
        supbookIndex = ind;
      }
    }

    if (!supbookFound)
    {
      externalSupbook = new SupbookRecord(fileName, settings);
      supbookIndex = supbooks.size();
      supbooks.add(externalSupbook);
    }
    
    int sheetIndex = externalSupbook.getSheetIndex(worksheetName);

    return externSheet.getIndex(supbookIndex, sheetIndex);
  }

  /**
   * Gets the last external sheet index for the sheet name
   * @param sheetName 
   * @return the sheet index or -1 if the sheet could not be found
   */
  public int getLastExternalSheetIndex(String sheetName)
  {
    if (externSheet == null)
    {
      externSheet = new ExternalSheetRecord();
      supbooks = new ArrayList();
      supbooks.add(new SupbookRecord(getNumberOfSheets(), settings));
    }

    // Iterate through the sheets records
    boolean found = false;
    Iterator i = sheets.iterator();
    int sheetpos = 0;
    WritableSheetImpl s = null;

    while (i.hasNext() && !found)
    {
      s = (WritableSheetImpl) i.next();
      
      if (s.getName().equals(sheetName))
      {
        found = true;
      }
      else
      {
        sheetpos++;
      }
    }

    if (!found)
    {
      return -1;
    }

    // Check that the supbook record at position zero is internal and contains
    // all the sheets
    SupbookRecord supbook = (SupbookRecord) supbooks.get(0);
    Assert.verify(supbook.getType() == SupbookRecord.INTERNAL &&
                  supbook.getNumberOfSheets() == getNumberOfSheets());

    return externSheet.getIndex(0, sheetpos);
  }

  /**
   * Sets the RGB value for the specified colour for this workbook
   *
   * @param c the colour whose RGB value is to be overwritten
   * @param r the red portion to set (0-255)
   * @param g the green portion to set (0-255)
   * @param b the blue portion to set (0-255)
   */
  public void setColourRGB(Colour c, int r, int g, int b)
  {
    formatRecords.setColourRGB(c,r,g,b);
  }

  /**
   * Accessor for the RGB value for the specified colour
   *
   * @return the RGB for the specified colour
   */
  public RGB getColourRGB(Colour c)
  {
    return formatRecords.getColourRGB(c);
  }

  /**
   * Gets the name at the specified index
   *
   * @param index the index into the name table
   * @return the name of the cell
   */
  public String getName(int index)
  {
    Assert.verify(index >= 0 && index < names.size());
    NameRecord n = (NameRecord) names.get(index);
    return n.getName();
  }

  /**
   * Gets the index of the name record for the name
   *
   * @param name 
   * @return the index in the name table
   */
  public int getNameIndex(String name)
  {
    NameRecord nr = (NameRecord) nameRecords.get(name);
    return nr != null ? nr.getIndex() : -1;
  }

  /**