Fixed bug where empty rows are produced if regex matches entire line.

mark.george / jrex

Browse code Fixed bug where empty rows are produced if regex matches entire line. master
1 parent 4ac499e commit 5b319bafaf9bcd8373cca23e39cac5fdf9ed560e Mark authored on 28 Sep 2016

Patch

Showing 1 changed file

Ignore Space Show notes View src/JRexFrame.java
import java.awt.Color; import java.util.regex.Matcher; import java.util.regex.Pattern; import java.util.regex.PatternSyntaxException; import javax.swing.JFileChooser; import javax.swing.JOptionPane; import javax.swing.SpinnerNumberModel; import javax.swing.UIManager; import javax.swing.table.DefaultTableModel; import javax.swing.table.TableModel; /** * * @author Mark George <mark.george@otago.ac.nz> / public class JRexFrame extends javax.swing.JFrame { private String exprChar = "?"; /* * Creates new form JRexFrame / public JRexFrame() { initComponents(); splitPane.setResizeWeight(0.66); spnColumns.setModel(new SpinnerNumberModel(0, 0, Integer.MAX_VALUE, 1)); } /* * This method is called from within the constructor to * initialize the form. * WARNING: Do NOT modify this code. The content of this method is * always regenerated by the Form Editor. / @SuppressWarnings("unchecked") // <editor-fold defaultstate="collapsed" desc="Generated Code">//GEN-BEGIN:initComponents private void initComponents() { expGrp = new javax.swing.ButtonGroup(); splitPane = new javax.swing.JSplitPane(); pnlInput = new javax.swing.JPanel(); btnClear = new javax.swing.JButton(); btnLoad = new javax.swing.JButton(); scrollInput = new javax.swing.JScrollPane(); txtInput = new javax.swing.JTextArea(); lblExpression = new javax.swing.JLabel(); txtRegex = new javax.swing.JTextField(); spnColumns = new javax.swing.JSpinner(); btnTSV = new javax.swing.JButton(); btnCSV = new javax.swing.JButton(); btnMatch = new javax.swing.JButton(); scrollTable = new javax.swing.JScrollPane(); jTable = new javax.swing.JTable(); btnTranspose = new javax.swing.JButton(); jButton1 = new javax.swing.JButton(); pnlOutput = new javax.swing.JPanel(); lblFormat = new javax.swing.JLabel(); txtFormat = new javax.swing.JTextField(); btnFormat = new javax.swing.JButton(); scrollOutput = new javax.swing.JScrollPane(); txtOutput = new javax.swing.JTextArea(); rdoQuestion = new javax.swing.JRadioButton(); rdoDollar = new javax.swing.JRadioButton(); rdoSlash = new javax.swing.JRadioButton(); jLabel1 = new javax.swing.JLabel(); cbBlanks = new javax.swing.JCheckBox(); txtReplace = new javax.swing.JTextField(); setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE); splitPane.setBorder(null); splitPane.setDividerLocation(366); splitPane.setDividerSize(15); splitPane.setOrientation(javax.swing.JSplitPane.VERTICAL_SPLIT); splitPane.setName("splitPane"); // NOI18N splitPane.setOneTouchExpandable(true); pnlInput.setBorder(javax.swing.BorderFactory.createTitledBorder("Input")); pnlInput.setName("pnlInput"); // NOI18N btnClear.setText("Clear"); btnClear.setName("btnClear"); // NOI18N btnClear.addActionListener(new java.awt.event.ActionListener() { public void actionPerformed(java.awt.event.ActionEvent evt) { btnClearActionPerformed(evt); } }); btnLoad.setText("Load"); btnLoad.setName("btnLoad"); // NOI18N btnLoad.addActionListener(new java.awt.event.ActionListener() { public void actionPerformed(java.awt.event.ActionEvent evt) { btnLoadActionPerformed(evt); } }); scrollInput.setName("scrollInput"); // NOI18N txtInput.setColumns(20); txtInput.setFont(new java.awt.Font("Monospaced", 0, 12)); // NOI18N txtInput.setRows(5); txtInput.setName("txtInput"); // NOI18N scrollInput.setViewportView(txtInput); lblExpression.setHorizontalAlignment(javax.swing.SwingConstants.RIGHT); lblExpression.setText("Expression:"); lblExpression.setName("lblExpression"); // NOI18N txtRegex.setFont(new java.awt.Font("Monospaced", 0, 12)); // NOI18N txtRegex.setName("txtRegex"); // NOI18N spnColumns.setName("spnColumns"); // NOI18N spnColumns.addMouseWheelListener(new java.awt.event.MouseWheelListener() { public void mouseWheelMoved(java.awt.event.MouseWheelEvent evt) { spnColumnsMouseWheelMoved(evt); } }); btnTSV.setText("TSV"); btnTSV.setName("btnTSV"); // NOI18N btnTSV.addActionListener(new java.awt.event.ActionListener() { public void actionPerformed(java.awt.event.ActionEvent evt) { btnTSVActionPerformed(evt); } }); btnCSV.setText("CSV"); btnCSV.setName("btnCSV"); // NOI18N btnCSV.addActionListener(new java.awt.event.ActionListener() { public void actionPerformed(java.awt.event.ActionEvent evt) { btnCSVActionPerformed(evt); } }); btnMatch.setText("Apply"); btnMatch.setName("btnMatch"); // NOI18N btnMatch.addActionListener(new java.awt.event.ActionListener() { public void actionPerformed(java.awt.event.ActionEvent evt) { btnMatchActionPerformed(evt); } }); scrollTable.setName("scrollTable"); // NOI18N jTable.setName("jTable"); // NOI18N scrollTable.setViewportView(jTable); btnTranspose.setText("Transpose"); btnTranspose.setName("btnTranspose"); // NOI18N btnTranspose.addActionListener(new java.awt.event.ActionListener() { public void actionPerformed(java.awt.event.ActionEvent evt) { btnTransposeActionPerformed(evt); } }); jButton1.setText("Literalise Expression"); jButton1.setName("jButton1"); // NOI18N jButton1.addActionListener(new java.awt.event.ActionListener() { public void actionPerformed(java.awt.event.ActionEvent evt) { jButton1ActionPerformed(evt); } }); javax.swing.GroupLayout pnlInputLayout = new javax.swing.GroupLayout(pnlInput); pnlInput.setLayout(pnlInputLayout); pnlInputLayout.setHorizontalGroup( pnlInputLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING) .addGroup(pnlInputLayout.createSequentialGroup() .addContainerGap() .addGroup(pnlInputLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING) .addComponent(scrollTable, javax.swing.GroupLayout.DEFAULT_SIZE, 566, Short.MAX_VALUE) .addComponent(scrollInput) .addGroup(pnlInputLayout.createSequentialGroup() .addComponent(spnColumns, javax.swing.GroupLayout.PREFERRED_SIZE, 46, javax.swing.GroupLayout.PREFERRED_SIZE) .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED) .addComponent(btnCSV) .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED) .addComponent(btnTSV) .addGap(18, 18, 18) .addComponent(lblExpression) .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED) .addComponent(txtRegex) .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED) .addComponent(btnMatch)) .addGroup(javax.swing.GroupLayout.Alignment.TRAILING, pnlInputLayout.createSequentialGroup() .addGap(0, 0, Short.MAX_VALUE) .addGroup(pnlInputLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING) .addGroup(javax.swing.GroupLayout.Alignment.TRAILING, pnlInputLayout.createSequentialGroup() .addComponent(btnLoad) .addGap(18, 18, 18) .addComponent(btnClear)) .addGroup(javax.swing.GroupLayout.Alignment.TRAILING, pnlInputLayout.createSequentialGroup() .addComponent(jButton1) .addGap(18, 18, 18) .addComponent(btnTranspose))))) .addContainerGap()) ); pnlInputLayout.setVerticalGroup( pnlInputLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING) .addGroup(pnlInputLayout.createSequentialGroup() .addGroup(pnlInputLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE) .addComponent(btnLoad, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE) .addComponent(btnClear, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)) .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED) .addComponent(scrollInput, javax.swing.GroupLayout.DEFAULT_SIZE, 100, Short.MAX_VALUE) .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED) .addGroup(pnlInputLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE) .addComponent(txtRegex, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE) .addComponent(lblExpression) .addComponent(btnTSV) .addComponent(btnCSV) .addComponent(spnColumns, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE) .addComponent(btnMatch)) .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED) .addComponent(scrollTable, javax.swing.GroupLayout.DEFAULT_SIZE, 101, Short.MAX_VALUE) .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED) .addGroup(pnlInputLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE) .addComponent(btnTranspose) .addComponent(jButton1)) .addContainerGap()) ); splitPane.setTopComponent(pnlInput); pnlOutput.setBorder(javax.swing.BorderFactory.createTitledBorder("Output")); pnlOutput.setName("pnlOutput"); // NOI18N lblFormat.setHorizontalAlignment(javax.swing.SwingConstants.RIGHT); lblFormat.setText("Format:"); lblFormat.setName("lblFormat"); // NOI18N txtFormat.setName("txtFormat"); // NOI18N btnFormat.setText("Apply"); btnFormat.setName("btnFormat"); // NOI18N btnFormat.addActionListener(new java.awt.event.ActionListener() { public void actionPerformed(java.awt.event.ActionEvent evt) { btnFormatActionPerformed(evt); } }); scrollOutput.setName("scrollOutput"); // NOI18N txtOutput.setColumns(20); txtOutput.setFont(new java.awt.Font("Monospaced", 0, 12)); // NOI18N txtOutput.setRows(5); txtOutput.setName("txtOutput"); // NOI18N scrollOutput.setViewportView(txtOutput); expGrp.add(rdoQuestion); rdoQuestion.setSelected(true); rdoQuestion.setText("?"); rdoQuestion.setName("rdoQuestion"); // NOI18N rdoQuestion.addActionListener(new java.awt.event.ActionListener() { public void actionPerformed(java.awt.event.ActionEvent evt) { rdoQuestionActionPerformed(evt); } }); expGrp.add(rdoDollar); rdoDollar.setText("$"); rdoDollar.setName("rdoDollar"); // NOI18N rdoDollar.addActionListener(new java.awt.event.ActionListener() { public void actionPerformed(java.awt.event.ActionEvent evt) { rdoDollarActionPerformed(evt); } }); expGrp.add(rdoSlash); rdoSlash.setText("\\"); rdoSlash.setName("rdoSlash"); // NOI18N rdoSlash.addActionListener(new java.awt.event.ActionListener() { public void actionPerformed(java.awt.event.ActionEvent evt) { rdoSlashActionPerformed(evt); } }); jLabel1.setText("Argument Marker:"); jLabel1.setName("jLabel1"); // NOI18N cbBlanks.setText("Replace blanks?"); cbBlanks.setName("cbBlanks"); // NOI18N txtReplace.setText("null"); txtReplace.setName("txtReplace"); // NOI18N javax.swing.GroupLayout pnlOutputLayout = new javax.swing.GroupLayout(pnlOutput); pnlOutput.setLayout(pnlOutputLayout); pnlOutputLayout.setHorizontalGroup( pnlOutputLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING) .addGroup(pnlOutputLayout.createSequentialGroup() .addContainerGap() .addGroup(pnlOutputLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING) .addComponent(scrollOutput) .addGroup(pnlOutputLayout.createSequentialGroup() .addComponent(jLabel1) .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED) .addComponent(rdoQuestion) .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED) .addComponent(rdoDollar) .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED) .addComponent(rdoSlash) .addGap(18, 18, 18) .addComponent(cbBlanks) .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED) .addComponent(txtReplace, javax.swing.GroupLayout.DEFAULT_SIZE, 177, Short.MAX_VALUE)) .addGroup(pnlOutputLayout.createSequentialGroup() .addComponent(lblFormat) .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED) .addComponent(txtFormat) .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED) .addComponent(btnFormat))) .addContainerGap()) ); pnlOutputLayout.setVerticalGroup( pnlOutputLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING) .addGroup(pnlOutputLayout.createSequentialGroup() .addGroup(pnlOutputLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE) .addComponent(rdoQuestion) .addComponent(rdoDollar) .addComponent(rdoSlash) .addComponent(jLabel1) .addComponent(cbBlanks) .addComponent(txtReplace, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)) .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED) .addGroup(pnlOutputLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE) .addComponent(lblFormat) .addComponent(txtFormat, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE) .addComponent(btnFormat)) .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED) .addComponent(scrollOutput, javax.swing.GroupLayout.DEFAULT_SIZE, 102, Short.MAX_VALUE) .addContainerGap()) ); splitPane.setRightComponent(pnlOutput); javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane()); getContentPane().setLayout(layout); layout.setHorizontalGroup( layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING) .addGroup(layout.createSequentialGroup() .addContainerGap() .addComponent(splitPane) .addContainerGap()) ); layout.setVerticalGroup( layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING) .addGroup(layout.createSequentialGroup() .addContainerGap() .addComponent(splitPane) .addContainerGap()) ); pack(); }// </editor-fold>//GEN-END:initComponents private void match() { txtOutput.setText(""); String regex = txtRegex.getText(); String text = txtInput.getText(); String[] input = null; try { Pattern pattern = Pattern.compile(regex); int flagsMask = pattern.flags(); StringBuilder flags = new StringBuilder(); boolean dotall = false; // work out which flags are being used if ((flagsMask & Pattern.DOTALL) == Pattern.DOTALL) { flags.append("DOTALL "); dotall = true; } if ((flagsMask & Pattern.MULTILINE) == Pattern.MULTILINE) { flags.append("MULTILINE "); } if ((flagsMask & Pattern.CASE_INSENSITIVE) == Pattern.CASE_INSENSITIVE) { flags.append("CASE_INSENSITIVE "); } DefaultTableModel model = new DefaultTableModel(); jTable.setModel(model); int numMatches = 0; // it DOTALL mode is on then grab the entire text rather then seperating by line if (dotall) { input = new String[1]; input[0] = text; } else { input = text.split("\n"); } for (String line : input) { Matcher matcher = pattern.matcher(line); while (matcher.find()) { // group() matches the entire line if there was a match. // This if-statment is to suppress extra empty groups from being // produced if the regex matches the entire line if(matcher.group().length() != line.length()) { continue; } numMatches++; int groupCount = matcher.groupCount(); model.setColumnCount(groupCount); Object[] headers = new Object[groupCount]; for (int k = 0; k < groupCount; k++) { headers[k] = k + 1; } model.setColumnIdentifiers(headers); txtOutput.append(matcher.group(0) + "\n"); String[] groups = new String[matcher.groupCount()]; for (int j = 1; j <= matcher.groupCount(); j++) { String s = matcher.group(j); groups[j - 1] = s; } model.addRow(groups); } } txtOutput.append("Matched " + numMatches + " line(s) out of " + input.length + " line(s) of input."); if (!flags.toString().isEmpty()) { txtOutput.append("\n\nFlags: " + flags.toString().trim()); } } catch (PatternSyntaxException ex) { txtOutput.setText(""); txtOutput.append("Error in expression\n\n"); txtOutput.append(ex.getMessage()); } } private void format() { txtOutput.setText(""); TableModel model = jTable.getModel(); String formatter = this.txtFormat.getText().replaceAll("\\" + exprChar + "(\\d)", "%$1\\$s"); for (int row = 0; row < model.getRowCount(); row++) { Object[] values = new Object[model.getColumnCount()]; for (int col = 0; col < model.getColumnCount(); col++) { String val = (String) model.getValueAt(row, col); if (cbBlanks.isSelected() && val.isEmpty()) { val = txtReplace.getText(); } values[col] = val; } String formatted = String.format(formatter, values); txtOutput.append(formatted + "\n"); } } private void transpose() { TableModel model = jTable.getModel(); DefaultTableModel transposed = new DefaultTableModel(model.getColumnCount(), model.getRowCount()); for (int row = 0; row < model.getRowCount(); row++) { for (int col = 0; col < model.getColumnCount(); col++) { Object val = model.getValueAt(row, col); transposed.setValueAt(val, col, row); } } Object[] headers = new Object[transposed.getColumnCount()]; for (int i = 0; i < headers.length; i++) { headers[i] = i + 1; } transposed.setColumnIdentifiers(headers); jTable.setModel(transposed); } private void csv() { Integer cols = (Integer) spnColumns.getValue(); StringBuilder sb = new StringBuilder(); for (int i = 0; i < cols - 1; i++) { sb.append("(.?),"); } sb.append("(.)"); txtRegex.setText(sb.toString()); } private void tsv() { Integer cols = (Integer) spnColumns.getValue(); StringBuilder sb = new StringBuilder(); for (int i = 0; i < cols - 1; i++) { sb.append("(.?)\\t"); } sb.append("(.)"); txtRegex.setText(sb.toString()); } private void load() { JFileChooser jfc = new JFileChooser(); if (jfc.showOpenDialog(JRexFrame.this) == JFileChooser.APPROVE_OPTION) { try { String data = JSedUtils.readFile(jfc.getSelectedFile()); txtInput.setText(data); } catch (Exception ex) { JOptionPane.showMessageDialog(this, "Error", ex.getMessage(), JOptionPane.ERROR_MESSAGE); } } } private void btnFormatActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_btnFormatActionPerformed format(); }//GEN-LAST:event_btnFormatActionPerformed private void btnTransposeActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_btnTransposeActionPerformed transpose(); }//GEN-LAST:event_btnTransposeActionPerformed private void btnMatchActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_btnMatchActionPerformed match(); }//GEN-LAST:event_btnMatchActionPerformed private void btnCSVActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_btnCSVActionPerformed csv(); }//GEN-LAST:event_btnCSVActionPerformed private void btnTSVActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_btnTSVActionPerformed tsv(); }//GEN-LAST:event_btnTSVActionPerformed private void btnLoadActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_btnLoadActionPerformed load(); }//GEN-LAST:event_btnLoadActionPerformed private void btnClearActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_btnClearActionPerformed txtInput.setText(""); }//GEN-LAST:event_btnClearActionPerformed private void rdoQuestionActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_rdoQuestionActionPerformed exprChar = "?"; }//GEN-LAST:event_rdoQuestionActionPerformed private void rdoDollarActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_rdoDollarActionPerformed exprChar = "$"; }//GEN-LAST:event_rdoDollarActionPerformed private void rdoSlashActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_rdoSlashActionPerformed exprChar = "\\"; }//GEN-LAST:event_rdoSlashActionPerformed private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_jButton1ActionPerformed txtOutput.setText(this.txtRegex.getText().replaceAll("\\\\", "\\\\\\\\").replaceAll("\"", "\\\\\"")); }//GEN-LAST:event_jButton1ActionPerformed private void spnColumnsMouseWheelMoved(java.awt.event.MouseWheelEvent evt) {//GEN-FIRST:event_spnColumnsMouseWheelMoved Integer value = (Integer) spnColumns.getValue(); value -= evt.getUnitsToScroll(); spnColumns.setValue(value > 0 ? value : 0); }//GEN-LAST:event_spnColumnsMouseWheelMoved /** * @param args the command line arguments / public static void main(String args[]) throws Exception { UIManager.setLookAndFeel("com.sun.java.swing.plaf.nimbus.NimbusLookAndFeel"); UIManager.put("control", new Color(50, 50, 50)); UIManager.put("nimbusBase", new Color(60, 60, 60)); UIManager.put("nimbusBlueGrey", new Color(60, 60, 60)); UIManager.put("nimbusFocus", new Color(90, 90, 90)); UIManager.put("nimbusLightBackground", new Color(70, 70, 70)); UIManager.put("text", new Color(230, 230, 230)); java.awt.EventQueue.invokeLater(new Runnable() { public void run() { new JRexFrame().setVisible(true); } }); } // Variables declaration - do not modify//GEN-BEGIN:variables private javax.swing.JButton btnCSV; private javax.swing.JButton btnClear; private javax.swing.JButton btnFormat; private javax.swing.JButton btnLoad; private javax.swing.JButton btnMatch; private javax.swing.JButton btnTSV; private javax.swing.JButton btnTranspose; private javax.swing.JCheckBox cbBlanks; private javax.swing.ButtonGroup expGrp; private javax.swing.JButton jButton1; private javax.swing.JLabel jLabel1; private javax.swing.JTable jTable; private javax.swing.JLabel lblExpression; private javax.swing.JLabel lblFormat; private javax.swing.JPanel pnlInput; private javax.swing.JPanel pnlOutput; private javax.swing.JRadioButton rdoDollar; private javax.swing.JRadioButton rdoQuestion; private javax.swing.JRadioButton rdoSlash; private javax.swing.JScrollPane scrollInput; private javax.swing.JScrollPane scrollOutput; private javax.swing.JScrollPane scrollTable; private javax.swing.JSplitPane splitPane; private javax.swing.JSpinner spnColumns; private javax.swing.JTextField txtFormat; private javax.swing.JTextArea txtInput; private javax.swing.JTextArea txtOutput; private javax.swing.JTextField txtRegex; private javax.swing.JTextField txtReplace; // End of variables declaration//GEN-END:variables } import java.awt.Color; import java.util.regex.Matcher; import java.util.regex.Pattern; import java.util.regex.PatternSyntaxException; import javax.swing.JFileChooser; import javax.swing.JOptionPane; import javax.swing.SpinnerNumberModel; import javax.swing.UIManager; import javax.swing.table.DefaultTableModel; import javax.swing.table.TableModel; /* * * @author Mark George <mark.george@otago.ac.nz> / public class JRexFrame extends javax.swing.JFrame { private String exprChar = "?"; /* * Creates new form JRexFrame / public JRexFrame() { initComponents(); splitPane.setResizeWeight(0.66); spnColumns.setModel(new SpinnerNumberModel(0, 0, Integer.MAX_VALUE, 1)); } /* * This method is called from within the constructor to * initialize the form. * WARNING: Do NOT modify this code. The content of this method is * always regenerated by the Form Editor. / @SuppressWarnings("unchecked") // <editor-fold defaultstate="collapsed" desc="Generated Code">//GEN-BEGIN:initComponents private void initComponents() { expGrp = new javax.swing.ButtonGroup(); splitPane = new javax.swing.JSplitPane(); pnlInput = new javax.swing.JPanel(); btnClear = new javax.swing.JButton(); btnLoad = new javax.swing.JButton(); scrollInput = new javax.swing.JScrollPane(); txtInput = new javax.swing.JTextArea(); lblExpression = new javax.swing.JLabel(); txtRegex = new javax.swing.JTextField(); spnColumns = new javax.swing.JSpinner(); btnTSV = new javax.swing.JButton(); btnCSV = new javax.swing.JButton(); btnMatch = new javax.swing.JButton(); scrollTable = new javax.swing.JScrollPane(); jTable = new javax.swing.JTable(); btnTranspose = new javax.swing.JButton(); jButton1 = new javax.swing.JButton(); pnlOutput = new javax.swing.JPanel(); lblFormat = new javax.swing.JLabel(); txtFormat = new javax.swing.JTextField(); btnFormat = new javax.swing.JButton(); scrollOutput = new javax.swing.JScrollPane(); txtOutput = new javax.swing.JTextArea(); rdoQuestion = new javax.swing.JRadioButton(); rdoDollar = new javax.swing.JRadioButton(); rdoSlash = new javax.swing.JRadioButton(); jLabel1 = new javax.swing.JLabel(); cbBlanks = new javax.swing.JCheckBox(); txtReplace = new javax.swing.JTextField(); setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE); splitPane.setBorder(null); splitPane.setDividerLocation(366); splitPane.setDividerSize(15); splitPane.setOrientation(javax.swing.JSplitPane.VERTICAL_SPLIT); splitPane.setName("splitPane"); // NOI18N splitPane.setOneTouchExpandable(true); pnlInput.setBorder(javax.swing.BorderFactory.createTitledBorder("Input")); pnlInput.setName("pnlInput"); // NOI18N btnClear.setText("Clear"); btnClear.setName("btnClear"); // NOI18N btnClear.addActionListener(new java.awt.event.ActionListener() { public void actionPerformed(java.awt.event.ActionEvent evt) { btnClearActionPerformed(evt); } }); btnLoad.setText("Load"); btnLoad.setName("btnLoad"); // NOI18N btnLoad.addActionListener(new java.awt.event.ActionListener() { public void actionPerformed(java.awt.event.ActionEvent evt) { btnLoadActionPerformed(evt); } }); scrollInput.setName("scrollInput"); // NOI18N txtInput.setColumns(20); txtInput.setFont(new java.awt.Font("Monospaced", 0, 12)); // NOI18N txtInput.setRows(5); txtInput.setName("txtInput"); // NOI18N scrollInput.setViewportView(txtInput); lblExpression.setHorizontalAlignment(javax.swing.SwingConstants.RIGHT); lblExpression.setText("Expression:"); lblExpression.setName("lblExpression"); // NOI18N txtRegex.setFont(new java.awt.Font("Monospaced", 0, 12)); // NOI18N txtRegex.setName("txtRegex"); // NOI18N spnColumns.setName("spnColumns"); // NOI18N spnColumns.addMouseWheelListener(new java.awt.event.MouseWheelListener() { public void mouseWheelMoved(java.awt.event.MouseWheelEvent evt) { spnColumnsMouseWheelMoved(evt); } }); btnTSV.setText("TSV"); btnTSV.setName("btnTSV"); // NOI18N btnTSV.addActionListener(new java.awt.event.ActionListener() { public void actionPerformed(java.awt.event.ActionEvent evt) { btnTSVActionPerformed(evt); } }); btnCSV.setText("CSV"); btnCSV.setName("btnCSV"); // NOI18N btnCSV.addActionListener(new java.awt.event.ActionListener() { public void actionPerformed(java.awt.event.ActionEvent evt) { btnCSVActionPerformed(evt); } }); btnMatch.setText("Apply"); btnMatch.setName("btnMatch"); // NOI18N btnMatch.addActionListener(new java.awt.event.ActionListener() { public void actionPerformed(java.awt.event.ActionEvent evt) { btnMatchActionPerformed(evt); } }); scrollTable.setName("scrollTable"); // NOI18N jTable.setName("jTable"); // NOI18N scrollTable.setViewportView(jTable); btnTranspose.setText("Transpose"); btnTranspose.setName("btnTranspose"); // NOI18N btnTranspose.addActionListener(new java.awt.event.ActionListener() { public void actionPerformed(java.awt.event.ActionEvent evt) { btnTransposeActionPerformed(evt); } }); jButton1.setText("Literalise Expression"); jButton1.setName("jButton1"); // NOI18N jButton1.addActionListener(new java.awt.event.ActionListener() { public void actionPerformed(java.awt.event.ActionEvent evt) { jButton1ActionPerformed(evt); } }); javax.swing.GroupLayout pnlInputLayout = new javax.swing.GroupLayout(pnlInput); pnlInput.setLayout(pnlInputLayout); pnlInputLayout.setHorizontalGroup( pnlInputLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING) .addGroup(pnlInputLayout.createSequentialGroup() .addContainerGap() .addGroup(pnlInputLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING) .addComponent(scrollTable, javax.swing.GroupLayout.DEFAULT_SIZE, 566, Short.MAX_VALUE) .addComponent(scrollInput) .addGroup(pnlInputLayout.createSequentialGroup() .addComponent(spnColumns, javax.swing.GroupLayout.PREFERRED_SIZE, 46, javax.swing.GroupLayout.PREFERRED_SIZE) .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED) .addComponent(btnCSV) .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED) .addComponent(btnTSV) .addGap(18, 18, 18) .addComponent(lblExpression) .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED) .addComponent(txtRegex) .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED) .addComponent(btnMatch)) .addGroup(javax.swing.GroupLayout.Alignment.TRAILING, pnlInputLayout.createSequentialGroup() .addGap(0, 0, Short.MAX_VALUE) .addGroup(pnlInputLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING) .addGroup(javax.swing.GroupLayout.Alignment.TRAILING, pnlInputLayout.createSequentialGroup() .addComponent(btnLoad) .addGap(18, 18, 18) .addComponent(btnClear)) .addGroup(javax.swing.GroupLayout.Alignment.TRAILING, pnlInputLayout.createSequentialGroup() .addComponent(jButton1) .addGap(18, 18, 18) .addComponent(btnTranspose))))) .addContainerGap()) ); pnlInputLayout.setVerticalGroup( pnlInputLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING) .addGroup(pnlInputLayout.createSequentialGroup() .addGroup(pnlInputLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE) .addComponent(btnLoad, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE) .addComponent(btnClear, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)) .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED) .addComponent(scrollInput, javax.swing.GroupLayout.DEFAULT_SIZE, 100, Short.MAX_VALUE) .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED) .addGroup(pnlInputLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE) .addComponent(txtRegex, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE) .addComponent(lblExpression) .addComponent(btnTSV) .addComponent(btnCSV) .addComponent(spnColumns, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE) .addComponent(btnMatch)) .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED) .addComponent(scrollTable, javax.swing.GroupLayout.DEFAULT_SIZE, 101, Short.MAX_VALUE) .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED) .addGroup(pnlInputLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE) .addComponent(btnTranspose) .addComponent(jButton1)) .addContainerGap()) ); splitPane.setTopComponent(pnlInput); pnlOutput.setBorder(javax.swing.BorderFactory.createTitledBorder("Output")); pnlOutput.setName("pnlOutput"); // NOI18N lblFormat.setHorizontalAlignment(javax.swing.SwingConstants.RIGHT); lblFormat.setText("Format:"); lblFormat.setName("lblFormat"); // NOI18N txtFormat.setName("txtFormat"); // NOI18N btnFormat.setText("Apply"); btnFormat.setName("btnFormat"); // NOI18N btnFormat.addActionListener(new java.awt.event.ActionListener() { public void actionPerformed(java.awt.event.ActionEvent evt) { btnFormatActionPerformed(evt); } }); scrollOutput.setName("scrollOutput"); // NOI18N txtOutput.setColumns(20); txtOutput.setFont(new java.awt.Font("Monospaced", 0, 12)); // NOI18N txtOutput.setRows(5); txtOutput.setName("txtOutput"); // NOI18N scrollOutput.setViewportView(txtOutput); expGrp.add(rdoQuestion); rdoQuestion.setSelected(true); rdoQuestion.setText("?"); rdoQuestion.setName("rdoQuestion"); // NOI18N rdoQuestion.addActionListener(new java.awt.event.ActionListener() { public void actionPerformed(java.awt.event.ActionEvent evt) { rdoQuestionActionPerformed(evt); } }); expGrp.add(rdoDollar); rdoDollar.setText("$"); rdoDollar.setName("rdoDollar"); // NOI18N rdoDollar.addActionListener(new java.awt.event.ActionListener() { public void actionPerformed(java.awt.event.ActionEvent evt) { rdoDollarActionPerformed(evt); } }); expGrp.add(rdoSlash); rdoSlash.setText("\\"); rdoSlash.setName("rdoSlash"); // NOI18N rdoSlash.addActionListener(new java.awt.event.ActionListener() { public void actionPerformed(java.awt.event.ActionEvent evt) { rdoSlashActionPerformed(evt); } }); jLabel1.setText("Argument Marker:"); jLabel1.setName("jLabel1"); // NOI18N cbBlanks.setText("Replace blanks?"); cbBlanks.setName("cbBlanks"); // NOI18N txtReplace.setText("null"); txtReplace.setName("txtReplace"); // NOI18N javax.swing.GroupLayout pnlOutputLayout = new javax.swing.GroupLayout(pnlOutput); pnlOutput.setLayout(pnlOutputLayout); pnlOutputLayout.setHorizontalGroup( pnlOutputLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING) .addGroup(pnlOutputLayout.createSequentialGroup() .addContainerGap() .addGroup(pnlOutputLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING) .addComponent(scrollOutput) .addGroup(pnlOutputLayout.createSequentialGroup() .addComponent(jLabel1) .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED) .addComponent(rdoQuestion) .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED) .addComponent(rdoDollar) .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED) .addComponent(rdoSlash) .addGap(18, 18, 18) .addComponent(cbBlanks) .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED) .addComponent(txtReplace, javax.swing.GroupLayout.DEFAULT_SIZE, 177, Short.MAX_VALUE)) .addGroup(pnlOutputLayout.createSequentialGroup() .addComponent(lblFormat) .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED) .addComponent(txtFormat) .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED) .addComponent(btnFormat))) .addContainerGap()) ); pnlOutputLayout.setVerticalGroup( pnlOutputLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING) .addGroup(pnlOutputLayout.createSequentialGroup() .addGroup(pnlOutputLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE) .addComponent(rdoQuestion) .addComponent(rdoDollar) .addComponent(rdoSlash) .addComponent(jLabel1) .addComponent(cbBlanks) .addComponent(txtReplace, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)) .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED) .addGroup(pnlOutputLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE) .addComponent(lblFormat) .addComponent(txtFormat, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE) .addComponent(btnFormat)) .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED) .addComponent(scrollOutput, javax.swing.GroupLayout.DEFAULT_SIZE, 102, Short.MAX_VALUE) .addContainerGap()) ); splitPane.setRightComponent(pnlOutput); javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane()); getContentPane().setLayout(layout); layout.setHorizontalGroup( layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING) .addGroup(layout.createSequentialGroup() .addContainerGap() .addComponent(splitPane) .addContainerGap()) ); layout.setVerticalGroup( layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING) .addGroup(layout.createSequentialGroup() .addContainerGap() .addComponent(splitPane) .addContainerGap()) ); pack(); }// </editor-fold>//GEN-END:initComponents private void match() { String regex = txtRegex.getText(); String text = txtInput.getText(); String[] input = null; try { Pattern pattern = Pattern.compile(regex); int flagsMask = pattern.flags(); StringBuilder flags = new StringBuilder(); boolean dotall = false; // work out which flags are being used if ((flagsMask & Pattern.DOTALL) == Pattern.DOTALL) { flags.append("DOTALL "); dotall = true; } if ((flagsMask & Pattern.MULTILINE) == Pattern.MULTILINE) { flags.append("MULTILINE "); } if ((flagsMask & Pattern.CASE_INSENSITIVE) == Pattern.CASE_INSENSITIVE) { flags.append("CASE_INSENSITIVE "); } DefaultTableModel model = new DefaultTableModel(); jTable.setModel(model); int numMatches = 0; // it DOTALL mode is on then grab the entire text rather then seperating by line if (dotall) { input = new String[1]; input[0] = text; } else { input = text.split("\n"); } for (String line : input) { Matcher matcher = pattern.matcher(line); while (matcher.find()) { numMatches++; int groupCount = matcher.groupCount(); model.setColumnCount(groupCount); Object[] headers = new Object[groupCount]; for (int k = 0; k < groupCount; k++) { headers[k] = k + 1; } model.setColumnIdentifiers(headers); txtOutput.append(matcher.group(0) + "\n"); String[] groups = new String[matcher.groupCount()]; for (int j = 1; j <= matcher.groupCount(); j++) { String s = matcher.group(j); groups[j - 1] = s; } model.addRow(groups); } } txtOutput.setText(""); txtOutput.append("Matched " + numMatches + " line(s) out of " + input.length + " line(s) of input."); if (!flags.toString().isEmpty()) { txtOutput.append("\n\nFlags: " + flags.toString().trim()); } } catch (PatternSyntaxException ex) { txtOutput.setText(""); txtOutput.append("Error in expression\n\n"); txtOutput.append(ex.getMessage()); } } private void format() { txtOutput.setText(""); TableModel model = jTable.getModel(); String formatter = this.txtFormat.getText().replaceAll("\\" + exprChar + "(\\d)", "%$1\\$s"); for (int row = 0; row < model.getRowCount(); row++) { Object[] values = new Object[model.getColumnCount()]; for (int col = 0; col < model.getColumnCount(); col++) { String val = (String) model.getValueAt(row, col); if (cbBlanks.isSelected() && val.isEmpty()) { val = txtReplace.getText(); } values[col] = val; } String formatted = String.format(formatter, values); txtOutput.append(formatted + "\n"); } } private void transpose() { TableModel model = jTable.getModel(); DefaultTableModel transposed = new DefaultTableModel(model.getColumnCount(), model.getRowCount()); for (int row = 0; row < model.getRowCount(); row++) { for (int col = 0; col < model.getColumnCount(); col++) { Object val = model.getValueAt(row, col); transposed.setValueAt(val, col, row); } } Object[] headers = new Object[transposed.getColumnCount()]; for (int i = 0; i < headers.length; i++) { headers[i] = i + 1; } transposed.setColumnIdentifiers(headers); jTable.setModel(transposed); } private void csv() { Integer cols = (Integer) spnColumns.getValue(); System.out.println(cols); StringBuilder sb = new StringBuilder(); for (int i = 0; i < cols - 1; i++) { sb.append("(.?),"); } sb.append("(.)"); txtRegex.setText(sb.toString()); } private void tsv() { Integer cols = (Integer) spnColumns.getValue(); System.out.println(cols); StringBuilder sb = new StringBuilder(); for (int i = 0; i < cols - 1; i++) { sb.append("(.?)\\t"); } sb.append("(.)"); txtRegex.setText(sb.toString()); } private void load() { JFileChooser jfc = new JFileChooser(); if (jfc.showOpenDialog(JRexFrame.this) == JFileChooser.APPROVE_OPTION) { try { String data = JSedUtils.readFile(jfc.getSelectedFile()); txtInput.setText(data); } catch (Exception ex) { JOptionPane.showMessageDialog(this, "Error", ex.getMessage(), JOptionPane.ERROR_MESSAGE); } } } private void btnFormatActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_btnFormatActionPerformed format(); }//GEN-LAST:event_btnFormatActionPerformed private void btnTransposeActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_btnTransposeActionPerformed transpose(); }//GEN-LAST:event_btnTransposeActionPerformed private void btnMatchActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_btnMatchActionPerformed match(); }//GEN-LAST:event_btnMatchActionPerformed private void btnCSVActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_btnCSVActionPerformed csv(); }//GEN-LAST:event_btnCSVActionPerformed private void btnTSVActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_btnTSVActionPerformed tsv(); }//GEN-LAST:event_btnTSVActionPerformed private void btnLoadActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_btnLoadActionPerformed load(); }//GEN-LAST:event_btnLoadActionPerformed private void btnClearActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_btnClearActionPerformed txtInput.setText(""); }//GEN-LAST:event_btnClearActionPerformed private void rdoQuestionActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_rdoQuestionActionPerformed exprChar = "?"; }//GEN-LAST:event_rdoQuestionActionPerformed private void rdoDollarActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_rdoDollarActionPerformed exprChar = "$"; }//GEN-LAST:event_rdoDollarActionPerformed private void rdoSlashActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_rdoSlashActionPerformed exprChar = "\\"; }//GEN-LAST:event_rdoSlashActionPerformed private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_jButton1ActionPerformed txtOutput.setText(this.txtRegex.getText().replaceAll("\\\\", "\\\\\\\\").replaceAll("\"", "\\\\\"")); }//GEN-LAST:event_jButton1ActionPerformed private void spnColumnsMouseWheelMoved(java.awt.event.MouseWheelEvent evt) {//GEN-FIRST:event_spnColumnsMouseWheelMoved Integer value = (Integer) spnColumns.getValue(); value -= evt.getUnitsToScroll(); spnColumns.setValue(value > 0 ? value : 0); }//GEN-LAST:event_spnColumnsMouseWheelMoved /** * @param args the command line arguments */ public static void main(String args[]) throws Exception { UIManager.setLookAndFeel("com.sun.java.swing.plaf.nimbus.NimbusLookAndFeel"); UIManager.put("control", new Color(50, 50, 50)); UIManager.put("nimbusBase", new Color(60, 60, 60)); UIManager.put("nimbusBlueGrey", new Color(60, 60, 60)); UIManager.put("nimbusFocus", new Color(90, 90, 90)); UIManager.put("nimbusLightBackground", new Color(70, 70, 70)); UIManager.put("text", new Color(230, 230, 230)); java.awt.EventQueue.invokeLater(new Runnable() { public void run() { new JRexFrame().setVisible(true); } }); } // Variables declaration - do not modify//GEN-BEGIN:variables private javax.swing.JButton btnCSV; private javax.swing.JButton btnClear; private javax.swing.JButton btnFormat; private javax.swing.JButton btnLoad; private javax.swing.JButton btnMatch; private javax.swing.JButton btnTSV; private javax.swing.JButton btnTranspose; private javax.swing.JCheckBox cbBlanks; private javax.swing.ButtonGroup expGrp; private javax.swing.JButton jButton1; private javax.swing.JLabel jLabel1; private javax.swing.JTable jTable; private javax.swing.JLabel lblExpression; private javax.swing.JLabel lblFormat; private javax.swing.JPanel pnlInput; private javax.swing.JPanel pnlOutput; private javax.swing.JRadioButton rdoDollar; private javax.swing.JRadioButton rdoQuestion; private javax.swing.JRadioButton rdoSlash; private javax.swing.JScrollPane scrollInput; private javax.swing.JScrollPane scrollOutput; private javax.swing.JScrollPane scrollTable; private javax.swing.JSplitPane splitPane; private javax.swing.JSpinner spnColumns; private javax.swing.JTextField txtFormat; private javax.swing.JTextArea txtInput; private javax.swing.JTextArea txtOutput; private javax.swing.JTextField txtRegex; private javax.swing.JTextField txtReplace; // End of variables declaration//GEN-END:variables }

Ignore Space Show notes View

src/JRexFrame.java

import java.awt.Color;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import java.util.regex.PatternSyntaxException;
import javax.swing.JFileChooser;
import javax.swing.JOptionPane;
import javax.swing.SpinnerNumberModel;
import javax.swing.UIManager;
import javax.swing.table.DefaultTableModel;
import javax.swing.table.TableModel;

/**
 *
 * @author Mark George <mark.george@otago.ac.nz>
 */
public class JRexFrame extends javax.swing.JFrame {

private String exprChar = "?";

/**
	 * Creates new form JRexFrame
	 */
	public JRexFrame() {
		initComponents();
		splitPane.setResizeWeight(0.66);
		spnColumns.setModel(new SpinnerNumberModel(0, 0, Integer.MAX_VALUE, 1));
	}

/**
	 * This method is called from within the constructor to
	 * initialize the form.
	 * WARNING: Do NOT modify this code. The content of this method is
	 * always regenerated by the Form Editor.
	 */
	@SuppressWarnings("unchecked")
   // <editor-fold defaultstate="collapsed" desc="Generated Code">//GEN-BEGIN:initComponents
   private void initComponents() {

expGrp = new javax.swing.ButtonGroup();
      splitPane = new javax.swing.JSplitPane();
      pnlInput = new javax.swing.JPanel();
      btnClear = new javax.swing.JButton();
      btnLoad = new javax.swing.JButton();
      scrollInput = new javax.swing.JScrollPane();
      txtInput = new javax.swing.JTextArea();
      lblExpression = new javax.swing.JLabel();
      txtRegex = new javax.swing.JTextField();
      spnColumns = new javax.swing.JSpinner();
      btnTSV = new javax.swing.JButton();
      btnCSV = new javax.swing.JButton();
      btnMatch = new javax.swing.JButton();
      scrollTable = new javax.swing.JScrollPane();
      jTable = new javax.swing.JTable();
      btnTranspose = new javax.swing.JButton();
      jButton1 = new javax.swing.JButton();
      pnlOutput = new javax.swing.JPanel();
      lblFormat = new javax.swing.JLabel();
      txtFormat = new javax.swing.JTextField();
      btnFormat = new javax.swing.JButton();
      scrollOutput = new javax.swing.JScrollPane();
      txtOutput = new javax.swing.JTextArea();
      rdoQuestion = new javax.swing.JRadioButton();
      rdoDollar = new javax.swing.JRadioButton();
      rdoSlash = new javax.swing.JRadioButton();
      jLabel1 = new javax.swing.JLabel();
      cbBlanks = new javax.swing.JCheckBox();
      txtReplace = new javax.swing.JTextField();

setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);

splitPane.setBorder(null);
      splitPane.setDividerLocation(366);
      splitPane.setDividerSize(15);
      splitPane.setOrientation(javax.swing.JSplitPane.VERTICAL_SPLIT);
      splitPane.setName("splitPane"); // NOI18N
      splitPane.setOneTouchExpandable(true);

pnlInput.setBorder(javax.swing.BorderFactory.createTitledBorder("Input"));
      pnlInput.setName("pnlInput"); // NOI18N

btnClear.setText("Clear");
      btnClear.setName("btnClear"); // NOI18N
      btnClear.addActionListener(new java.awt.event.ActionListener() {
         public void actionPerformed(java.awt.event.ActionEvent evt) {
            btnClearActionPerformed(evt);
         }
      });

btnLoad.setText("Load");
      btnLoad.setName("btnLoad"); // NOI18N
      btnLoad.addActionListener(new java.awt.event.ActionListener() {
         public void actionPerformed(java.awt.event.ActionEvent evt) {
            btnLoadActionPerformed(evt);
         }
      });

scrollInput.setName("scrollInput"); // NOI18N

txtInput.setColumns(20);
      txtInput.setFont(new java.awt.Font("Monospaced", 0, 12)); // NOI18N
      txtInput.setRows(5);
      txtInput.setName("txtInput"); // NOI18N
      scrollInput.setViewportView(txtInput);

lblExpression.setHorizontalAlignment(javax.swing.SwingConstants.RIGHT);
      lblExpression.setText("Expression:");
      lblExpression.setName("lblExpression"); // NOI18N

txtRegex.setFont(new java.awt.Font("Monospaced", 0, 12)); // NOI18N
      txtRegex.setName("txtRegex"); // NOI18N

spnColumns.setName("spnColumns"); // NOI18N
      spnColumns.addMouseWheelListener(new java.awt.event.MouseWheelListener() {
         public void mouseWheelMoved(java.awt.event.MouseWheelEvent evt) {
            spnColumnsMouseWheelMoved(evt);
         }
      });

btnTSV.setText("TSV");
      btnTSV.setName("btnTSV"); // NOI18N
      btnTSV.addActionListener(new java.awt.event.ActionListener() {
         public void actionPerformed(java.awt.event.ActionEvent evt) {
            btnTSVActionPerformed(evt);
         }
      });

btnCSV.setText("CSV");
      btnCSV.setName("btnCSV"); // NOI18N
      btnCSV.addActionListener(new java.awt.event.ActionListener() {
         public void actionPerformed(java.awt.event.ActionEvent evt) {
            btnCSVActionPerformed(evt);
         }
      });

btnMatch.setText("Apply");
      btnMatch.setName("btnMatch"); // NOI18N
      btnMatch.addActionListener(new java.awt.event.ActionListener() {
         public void actionPerformed(java.awt.event.ActionEvent evt) {
            btnMatchActionPerformed(evt);
         }
      });

scrollTable.setName("scrollTable"); // NOI18N

jTable.setName("jTable"); // NOI18N
      scrollTable.setViewportView(jTable);

btnTranspose.setText("Transpose");
      btnTranspose.setName("btnTranspose"); // NOI18N
      btnTranspose.addActionListener(new java.awt.event.ActionListener() {
         public void actionPerformed(java.awt.event.ActionEvent evt) {
            btnTransposeActionPerformed(evt);
         }
      });

jButton1.setText("Literalise Expression");
      jButton1.setName("jButton1"); // NOI18N
      jButton1.addActionListener(new java.awt.event.ActionListener() {
         public void actionPerformed(java.awt.event.ActionEvent evt) {
            jButton1ActionPerformed(evt);
         }
      });

javax.swing.GroupLayout pnlInputLayout = new javax.swing.GroupLayout(pnlInput);
      pnlInput.setLayout(pnlInputLayout);
      pnlInputLayout.setHorizontalGroup(
         pnlInputLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
         .addGroup(pnlInputLayout.createSequentialGroup()
            .addContainerGap()
            .addGroup(pnlInputLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
               .addComponent(scrollTable, javax.swing.GroupLayout.DEFAULT_SIZE, 566, Short.MAX_VALUE)
               .addComponent(scrollInput)
               .addGroup(pnlInputLayout.createSequentialGroup()
                  .addComponent(spnColumns, javax.swing.GroupLayout.PREFERRED_SIZE, 46, javax.swing.GroupLayout.PREFERRED_SIZE)
                  .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                  .addComponent(btnCSV)
                  .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                  .addComponent(btnTSV)
                  .addGap(18, 18, 18)
                  .addComponent(lblExpression)
                  .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                  .addComponent(txtRegex)
                  .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                  .addComponent(btnMatch))
               .addGroup(javax.swing.GroupLayout.Alignment.TRAILING, pnlInputLayout.createSequentialGroup()
                  .addGap(0, 0, Short.MAX_VALUE)
                  .addGroup(pnlInputLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                     .addGroup(javax.swing.GroupLayout.Alignment.TRAILING, pnlInputLayout.createSequentialGroup()
                        .addComponent(btnLoad)
                        .addGap(18, 18, 18)
                        .addComponent(btnClear))
                     .addGroup(javax.swing.GroupLayout.Alignment.TRAILING, pnlInputLayout.createSequentialGroup()
                        .addComponent(jButton1)
                        .addGap(18, 18, 18)
                        .addComponent(btnTranspose)))))
            .addContainerGap())
      );
      pnlInputLayout.setVerticalGroup(
         pnlInputLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
         .addGroup(pnlInputLayout.createSequentialGroup()
            .addGroup(pnlInputLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
               .addComponent(btnLoad, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
               .addComponent(btnClear, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
            .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
            .addComponent(scrollInput, javax.swing.GroupLayout.DEFAULT_SIZE, 100, Short.MAX_VALUE)
            .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
            .addGroup(pnlInputLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
               .addComponent(txtRegex, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
               .addComponent(lblExpression)
               .addComponent(btnTSV)
               .addComponent(btnCSV)
               .addComponent(spnColumns, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
               .addComponent(btnMatch))
            .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
            .addComponent(scrollTable, javax.swing.GroupLayout.DEFAULT_SIZE, 101, Short.MAX_VALUE)
            .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
            .addGroup(pnlInputLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
               .addComponent(btnTranspose)
               .addComponent(jButton1))
            .addContainerGap())
      );

splitPane.setTopComponent(pnlInput);

pnlOutput.setBorder(javax.swing.BorderFactory.createTitledBorder("Output"));
      pnlOutput.setName("pnlOutput"); // NOI18N

lblFormat.setHorizontalAlignment(javax.swing.SwingConstants.RIGHT);
      lblFormat.setText("Format:");
      lblFormat.setName("lblFormat"); // NOI18N

txtFormat.setName("txtFormat"); // NOI18N

btnFormat.setText("Apply");
      btnFormat.setName("btnFormat"); // NOI18N
      btnFormat.addActionListener(new java.awt.event.ActionListener() {
         public void actionPerformed(java.awt.event.ActionEvent evt) {
            btnFormatActionPerformed(evt);
         }
      });

scrollOutput.setName("scrollOutput"); // NOI18N

txtOutput.setColumns(20);
      txtOutput.setFont(new java.awt.Font("Monospaced", 0, 12)); // NOI18N
      txtOutput.setRows(5);
      txtOutput.setName("txtOutput"); // NOI18N
      scrollOutput.setViewportView(txtOutput);

expGrp.add(rdoQuestion);
      rdoQuestion.setSelected(true);
      rdoQuestion.setText("?");
      rdoQuestion.setName("rdoQuestion"); // NOI18N
      rdoQuestion.addActionListener(new java.awt.event.ActionListener() {
         public void actionPerformed(java.awt.event.ActionEvent evt) {
            rdoQuestionActionPerformed(evt);
         }
      });

expGrp.add(rdoDollar);
      rdoDollar.setText("$");
      rdoDollar.setName("rdoDollar"); // NOI18N
      rdoDollar.addActionListener(new java.awt.event.ActionListener() {
         public void actionPerformed(java.awt.event.ActionEvent evt) {
            rdoDollarActionPerformed(evt);
         }
      });

expGrp.add(rdoSlash);
      rdoSlash.setText("\\");
         rdoSlash.setName("rdoSlash"); // NOI18N
         rdoSlash.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
               rdoSlashActionPerformed(evt);
            }
         });

jLabel1.setText("Argument Marker:");
         jLabel1.setName("jLabel1"); // NOI18N

cbBlanks.setText("Replace blanks?");
         cbBlanks.setName("cbBlanks"); // NOI18N

txtReplace.setText("null");
         txtReplace.setName("txtReplace"); // NOI18N

javax.swing.GroupLayout pnlOutputLayout = new javax.swing.GroupLayout(pnlOutput);
         pnlOutput.setLayout(pnlOutputLayout);
         pnlOutputLayout.setHorizontalGroup(
            pnlOutputLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(pnlOutputLayout.createSequentialGroup()
               .addContainerGap()
               .addGroup(pnlOutputLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                  .addComponent(scrollOutput)
                  .addGroup(pnlOutputLayout.createSequentialGroup()
                     .addComponent(jLabel1)
                     .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                     .addComponent(rdoQuestion)
                     .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                     .addComponent(rdoDollar)
                     .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                     .addComponent(rdoSlash)
                     .addGap(18, 18, 18)
                     .addComponent(cbBlanks)
                     .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                     .addComponent(txtReplace, javax.swing.GroupLayout.DEFAULT_SIZE, 177, Short.MAX_VALUE))
                  .addGroup(pnlOutputLayout.createSequentialGroup()
                     .addComponent(lblFormat)
                     .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
                     .addComponent(txtFormat)
                     .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                     .addComponent(btnFormat)))
               .addContainerGap())
         );
         pnlOutputLayout.setVerticalGroup(
            pnlOutputLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(pnlOutputLayout.createSequentialGroup()
               .addGroup(pnlOutputLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                  .addComponent(rdoQuestion)
                  .addComponent(rdoDollar)
                  .addComponent(rdoSlash)
                  .addComponent(jLabel1)
                  .addComponent(cbBlanks)
                  .addComponent(txtReplace, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
               .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
               .addGroup(pnlOutputLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                  .addComponent(lblFormat)
                  .addComponent(txtFormat, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                  .addComponent(btnFormat))
               .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
               .addComponent(scrollOutput, javax.swing.GroupLayout.DEFAULT_SIZE, 102, Short.MAX_VALUE)
               .addContainerGap())
         );

splitPane.setRightComponent(pnlOutput);

javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
         getContentPane().setLayout(layout);
         layout.setHorizontalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(layout.createSequentialGroup()
               .addContainerGap()
               .addComponent(splitPane)
               .addContainerGap())
         );
         layout.setVerticalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(layout.createSequentialGroup()
               .addContainerGap()
               .addComponent(splitPane)
               .addContainerGap())
         );

pack();
      }// </editor-fold>//GEN-END:initComponents

private void match() {
		txtOutput.setText("");
		String regex = txtRegex.getText();
		String text = txtInput.getText();

String[] input = null;

try {

Pattern pattern = Pattern.compile(regex);

int flagsMask = pattern.flags();

StringBuilder flags = new StringBuilder();

boolean dotall = false;

// work out which flags are being used
			if ((flagsMask & Pattern.DOTALL) == Pattern.DOTALL) {
				flags.append("DOTALL ");
				dotall = true;
			}

if ((flagsMask & Pattern.MULTILINE) == Pattern.MULTILINE) {
				flags.append("MULTILINE ");
			}

if ((flagsMask & Pattern.CASE_INSENSITIVE) == Pattern.CASE_INSENSITIVE) {
				flags.append("CASE_INSENSITIVE ");
			}

DefaultTableModel model = new DefaultTableModel();
			jTable.setModel(model);

int numMatches = 0;

// it DOTALL mode is on then grab the entire text rather then seperating by line
			if (dotall) {
				input = new String[1];
				input[0] = text;
			} else {
				input = text.split("\n");
			}

for (String line : input) {
				Matcher matcher = pattern.matcher(line);
				while (matcher.find()) {

// group() matches the entire line if there was a match.
					// This if-statment is to suppress extra empty groups from being
					// produced if the regex matches the entire line
					if(matcher.group().length() != line.length()) {
						continue;
					}
					
					numMatches++;

int groupCount = matcher.groupCount();

model.setColumnCount(groupCount);

Object[] headers = new Object[groupCount];

for (int k = 0; k < groupCount; k++) {
						headers[k] = k + 1;
					}

model.setColumnIdentifiers(headers);

txtOutput.append(matcher.group(0) + "\n");

String[] groups = new String[matcher.groupCount()];
					for (int j = 1; j <= matcher.groupCount(); j++) {
						String s = matcher.group(j);
						groups[j - 1] = s;
					}

model.addRow(groups);
				}
			}

txtOutput.append("Matched " + numMatches + " line(s) out of "
					+ input.length + " line(s) of input.");

if (!flags.toString().isEmpty()) {
				txtOutput.append("\n\nFlags: " + flags.toString().trim());
			}

} catch (PatternSyntaxException ex) {
			txtOutput.setText("");
			txtOutput.append("Error in expression\n\n");
			txtOutput.append(ex.getMessage());
		}
	}

private void format() {

txtOutput.setText("");

TableModel model = jTable.getModel();

String formatter = this.txtFormat.getText().replaceAll("\\" + exprChar + "(\\d*)", "%$1\\$s");

for (int row = 0; row < model.getRowCount(); row++) {

Object[] values = new Object[model.getColumnCount()];

for (int col = 0; col < model.getColumnCount(); col++) {
				String val = (String) model.getValueAt(row, col);

if (cbBlanks.isSelected() && val.isEmpty()) {
					val = txtReplace.getText();
				}

values[col] = val;
			}

String formatted = String.format(formatter, values);
			txtOutput.append(formatted + "\n");

}

private void transpose() {

TableModel model = jTable.getModel();
		DefaultTableModel transposed = new DefaultTableModel(model.getColumnCount(), model.getRowCount());

for (int row = 0; row < model.getRowCount(); row++) {
			for (int col = 0; col < model.getColumnCount(); col++) {
				Object val = model.getValueAt(row, col);
				transposed.setValueAt(val, col, row);
			}
		}

Object[] headers = new Object[transposed.getColumnCount()];

for (int i = 0; i < headers.length; i++) {
			headers[i] = i + 1;
		}

transposed.setColumnIdentifiers(headers);
		jTable.setModel(transposed);
	}

private void csv() {
		Integer cols = (Integer) spnColumns.getValue();

StringBuilder sb = new StringBuilder();
		for (int i = 0; i < cols - 1; i++) {
			sb.append("(.*?),");
		}

sb.append("(.*)");

txtRegex.setText(sb.toString());
	}

private void tsv() {
		Integer cols = (Integer) spnColumns.getValue();

StringBuilder sb = new StringBuilder();
		for (int i = 0; i < cols - 1; i++) {
			sb.append("(.*?)\\t");
		}

sb.append("(.*)");

txtRegex.setText(sb.toString());
	}

private void load() {
		JFileChooser jfc = new JFileChooser();
		if (jfc.showOpenDialog(JRexFrame.this) == JFileChooser.APPROVE_OPTION) {
			try {
				String data = JSedUtils.readFile(jfc.getSelectedFile());

txtInput.setText(data);

} catch (Exception ex) {
				JOptionPane.showMessageDialog(this, "Error", ex.getMessage(), JOptionPane.ERROR_MESSAGE);
			}
		}
	}
	
   private void btnFormatActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_btnFormatActionPerformed
		format();
   }//GEN-LAST:event_btnFormatActionPerformed

private void btnTransposeActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_btnTransposeActionPerformed
		transpose();
   }//GEN-LAST:event_btnTransposeActionPerformed

private void btnMatchActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_btnMatchActionPerformed
		match();
   }//GEN-LAST:event_btnMatchActionPerformed

private void btnCSVActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_btnCSVActionPerformed
		csv();
   }//GEN-LAST:event_btnCSVActionPerformed

private void btnTSVActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_btnTSVActionPerformed
		tsv();
   }//GEN-LAST:event_btnTSVActionPerformed

private void btnLoadActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_btnLoadActionPerformed
		load();
   }//GEN-LAST:event_btnLoadActionPerformed

private void btnClearActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_btnClearActionPerformed
		txtInput.setText("");
   }//GEN-LAST:event_btnClearActionPerformed

private void rdoQuestionActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_rdoQuestionActionPerformed
		exprChar = "?";
   }//GEN-LAST:event_rdoQuestionActionPerformed

private void rdoDollarActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_rdoDollarActionPerformed
		exprChar = "$";
   }//GEN-LAST:event_rdoDollarActionPerformed

private void rdoSlashActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_rdoSlashActionPerformed
		exprChar = "\\";
   }//GEN-LAST:event_rdoSlashActionPerformed

private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_jButton1ActionPerformed
		txtOutput.setText(this.txtRegex.getText().replaceAll("\\\\", "\\\\\\\\").replaceAll("\"", "\\\\\""));
   }//GEN-LAST:event_jButton1ActionPerformed

private void spnColumnsMouseWheelMoved(java.awt.event.MouseWheelEvent evt) {//GEN-FIRST:event_spnColumnsMouseWheelMoved
		Integer value = (Integer) spnColumns.getValue();
		value -= evt.getUnitsToScroll();
		spnColumns.setValue(value > 0 ? value : 0);
   }//GEN-LAST:event_spnColumnsMouseWheelMoved

/**
	 * @param args the command line arguments
	 */
	public static void main(String args[]) throws Exception {
		UIManager.setLookAndFeel("com.sun.java.swing.plaf.nimbus.NimbusLookAndFeel");
		UIManager.put("control", new Color(50, 50, 50));
		UIManager.put("nimbusBase", new Color(60, 60, 60));
		UIManager.put("nimbusBlueGrey", new Color(60, 60, 60));
		UIManager.put("nimbusFocus", new Color(90, 90, 90));
		UIManager.put("nimbusLightBackground", new Color(70, 70, 70));
		UIManager.put("text", new Color(230, 230, 230));

java.awt.EventQueue.invokeLater(new Runnable() {
			public void run() {
				new JRexFrame().setVisible(true);
			}
		});
	}

// Variables declaration - do not modify//GEN-BEGIN:variables
   private javax.swing.JButton btnCSV;
   private javax.swing.JButton btnClear;
   private javax.swing.JButton btnFormat;
   private javax.swing.JButton btnLoad;
   private javax.swing.JButton btnMatch;
   private javax.swing.JButton btnTSV;
   private javax.swing.JButton btnTranspose;
   private javax.swing.JCheckBox cbBlanks;
   private javax.swing.ButtonGroup expGrp;
   private javax.swing.JButton jButton1;
   private javax.swing.JLabel jLabel1;
   private javax.swing.JTable jTable;
   private javax.swing.JLabel lblExpression;
   private javax.swing.JLabel lblFormat;
   private javax.swing.JPanel pnlInput;
   private javax.swing.JPanel pnlOutput;
   private javax.swing.JRadioButton rdoDollar;
   private javax.swing.JRadioButton rdoQuestion;
   private javax.swing.JRadioButton rdoSlash;
   private javax.swing.JScrollPane scrollInput;
   private javax.swing.JScrollPane scrollOutput;
   private javax.swing.JScrollPane scrollTable;
   private javax.swing.JSplitPane splitPane;
   private javax.swing.JSpinner spnColumns;
   private javax.swing.JTextField txtFormat;
   private javax.swing.JTextArea txtInput;
   private javax.swing.JTextArea txtOutput;
   private javax.swing.JTextField txtRegex;
   private javax.swing.JTextField txtReplace;
   // End of variables declaration//GEN-END:variables
}

/**
 *
 * @author Mark George <mark.george@otago.ac.nz>
 */
public class JRexFrame extends javax.swing.JFrame {

private String exprChar = "?";

/**
	 * Creates new form JRexFrame
	 */
	public JRexFrame() {
		initComponents();
		splitPane.setResizeWeight(0.66);
		spnColumns.setModel(new SpinnerNumberModel(0, 0, Integer.MAX_VALUE, 1));
	}

setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);

pnlInput.setBorder(javax.swing.BorderFactory.createTitledBorder("Input"));
      pnlInput.setName("pnlInput"); // NOI18N

scrollInput.setName("scrollInput"); // NOI18N

lblExpression.setHorizontalAlignment(javax.swing.SwingConstants.RIGHT);
      lblExpression.setText("Expression:");
      lblExpression.setName("lblExpression"); // NOI18N

txtRegex.setFont(new java.awt.Font("Monospaced", 0, 12)); // NOI18N
      txtRegex.setName("txtRegex"); // NOI18N

scrollTable.setName("scrollTable"); // NOI18N

jTable.setName("jTable"); // NOI18N
      scrollTable.setViewportView(jTable);

splitPane.setTopComponent(pnlInput);

pnlOutput.setBorder(javax.swing.BorderFactory.createTitledBorder("Output"));
      pnlOutput.setName("pnlOutput"); // NOI18N

lblFormat.setHorizontalAlignment(javax.swing.SwingConstants.RIGHT);
      lblFormat.setText("Format:");
      lblFormat.setName("lblFormat"); // NOI18N

txtFormat.setName("txtFormat"); // NOI18N

scrollOutput.setName("scrollOutput"); // NOI18N

jLabel1.setText("Argument Marker:");
         jLabel1.setName("jLabel1"); // NOI18N

cbBlanks.setText("Replace blanks?");
         cbBlanks.setName("cbBlanks"); // NOI18N

txtReplace.setText("null");
         txtReplace.setName("txtReplace"); // NOI18N

splitPane.setRightComponent(pnlOutput);

pack();
      }// </editor-fold>//GEN-END:initComponents

private void match() {
		String regex = txtRegex.getText();
		String text = txtInput.getText();

String[] input = null;

try {

Pattern pattern = Pattern.compile(regex);

int flagsMask = pattern.flags();

StringBuilder flags = new StringBuilder();

boolean dotall = false;

// work out which flags are being used
			if ((flagsMask & Pattern.DOTALL) == Pattern.DOTALL) {
				flags.append("DOTALL ");
				dotall = true;
			}

if ((flagsMask & Pattern.MULTILINE) == Pattern.MULTILINE) {
				flags.append("MULTILINE ");
			}

if ((flagsMask & Pattern.CASE_INSENSITIVE) == Pattern.CASE_INSENSITIVE) {
				flags.append("CASE_INSENSITIVE ");
			}

DefaultTableModel model = new DefaultTableModel();
			jTable.setModel(model);

int numMatches = 0;

// it DOTALL mode is on then grab the entire text rather then seperating by line
			if (dotall) {
				input = new String[1];
				input[0] = text;
			} else {
				input = text.split("\n");
			}

for (String line : input) {
				Matcher matcher = pattern.matcher(line);
				while (matcher.find()) {

numMatches++;

int groupCount = matcher.groupCount();

model.setColumnCount(groupCount);

Object[] headers = new Object[groupCount];

for (int k = 0; k < groupCount; k++) {
						headers[k] = k + 1;
					}

model.setColumnIdentifiers(headers);

txtOutput.append(matcher.group(0) + "\n");

String[] groups = new String[matcher.groupCount()];
					for (int j = 1; j <= matcher.groupCount(); j++) {
						String s = matcher.group(j);
						groups[j - 1] = s;
					}

model.addRow(groups);
				}
			}

txtOutput.setText("");
			txtOutput.append("Matched " + numMatches + " line(s) out of "
					+ input.length + " line(s) of input.");

if (!flags.toString().isEmpty()) {
				txtOutput.append("\n\nFlags: " + flags.toString().trim());
			}

} catch (PatternSyntaxException ex) {
			txtOutput.setText("");
			txtOutput.append("Error in expression\n\n");
			txtOutput.append(ex.getMessage());
		}
	}

private void format() {

txtOutput.setText("");

TableModel model = jTable.getModel();

String formatter = this.txtFormat.getText().replaceAll("\\" + exprChar + "(\\d*)", "%$1\\$s");

for (int row = 0; row < model.getRowCount(); row++) {

Object[] values = new Object[model.getColumnCount()];

for (int col = 0; col < model.getColumnCount(); col++) {
				String val = (String) model.getValueAt(row, col);

if (cbBlanks.isSelected() && val.isEmpty()) {
					val = txtReplace.getText();
				}

values[col] = val;
			}

String formatted = String.format(formatter, values);
			txtOutput.append(formatted + "\n");

}

private void transpose() {

TableModel model = jTable.getModel();
		DefaultTableModel transposed = new DefaultTableModel(model.getColumnCount(), model.getRowCount());

Object[] headers = new Object[transposed.getColumnCount()];

for (int i = 0; i < headers.length; i++) {
			headers[i] = i + 1;
		}

transposed.setColumnIdentifiers(headers);
		jTable.setModel(transposed);
	}

private void csv() {
		Integer cols = (Integer) spnColumns.getValue();
		System.out.println(cols);

StringBuilder sb = new StringBuilder();
		for (int i = 0; i < cols - 1; i++) {
			sb.append("(.*?),");
		}

sb.append("(.*)");

txtRegex.setText(sb.toString());
	}

private void tsv() {
		Integer cols = (Integer) spnColumns.getValue();
		System.out.println(cols);