package uk.ac.ebi.intenz.tools.sib.writer;
   
   /**
    * Provides a default implementation which can be applied to all line types.
    * <p/>
    * The only exception is the <code><b>CC</b></code> line, which is an extension of this class.
    *
    * @author Michael Darsow
    * @version $Revision: 1.2 $ $Date: 2008/01/28 11:43:23 $
   */
  public class DefaultLineFormatter implements LineFormatter {
    /**
     * Formats the text by adding the line headers and wrapping the content using {@link LineWrapper LineWrapper}
     * implementations.
     *
     * @param text The text to be formatted.
     * @param lineType The {@link LineType line type} .
     * @return the formatted text.
     * @throws EnzymeFlatFileWriteException if an error occured during the formatting process.
     * @throws NullPointerException if any of the parameters is <code>null</code>.
     */
    public String formatLines(String text, LineType lineType) throws EnzymeFlatFileWriteException {
      if (text == null || lineType == null) throw new NullPointerException();
  
      String lineStart = lineType.toString() + "   ";
      int netLineWidth = LINEWIDTH - lineStart.length();
  
      if(!text.equals("") &&
              (lineType == LineType.DE || lineType == LineType.AN || lineType == LineType.CA || 
              lineType == LineType.CF || lineType == LineType.DI) &&
              !text.endsWith(".")) text += '.'; // Take care of the period.
  
      StringBuffer wrappedText = new StringBuffer();
  
      // Check if the given text fits into one line.
      if (text.length() <= netLineWidth) {
        wrappedText.append(lineStart);
        wrappedText.append(text);
        return wrappedText.toString();
      }
  
      StringBuffer restText = new StringBuffer(text);
      LineWrapper lineWrapPositioner = LineWrapperFactory.create(text, lineType);
      int additionalIndent = 0;
      while (restText.toString().trim().length() > netLineWidth) {
        int position = lineWrapPositioner.findPosition(restText.toString().trim(), netLineWidth);
        wrappedText.append(lineStart);                                                    // Add the line type string.
        if (restText.length() > 0 && restText.charAt(0) == ' ') restText.deleteCharAt(0); // Ignore leading space.
        String line = restText.substring(0, position);                                    // Get the line.
        restText.delete(0, position);                                                     // Remove the line from the text.
        for (int iii = 0; iii < additionalIndent; iii++)                                  // Insert indent.
          wrappedText.append(" ");
        wrappedText.append(line);                                                         // Append line.
        wrappedText.append("\n");
      }
  
      // Append last line.
      wrappedText.append(lineStart);
      if (restText.length() > 0 && restText.charAt(0) == ' ') restText.deleteCharAt(0); // Ignore leading space.
      for (int iii = 0; iii < additionalIndent; iii++)
        wrappedText.append(" ");
      wrappedText.append(restText.toString());
  
      return wrappedText.toString();
    }
  }