Java tutorial
/* * Copyright (c) 2015, Netsyms Technologies * All rights reserved. * * * CODE LICENSE ========== * Redistribution and use in source and binary forms, with or without modification, * are permitted provided that the following conditions are met: * * 1. Redistributions of source code must retain the above copyright notice, this * list of conditions and the following disclaimer. * * 2. Redistributions in binary form must reproduce the above copyright notice, * this list of conditions and the following disclaimer in the documentation and/or * other materials provided with the distribution. * * 3. Neither the name of the copyright holder nor the names of its contributors * may be used to endorse or promote products derived from this software without * specific prior written permission. * * 4. You adhere to the Media License detailed below. If you do not, this license * is automatically revoked and you must purge all copies of the software you * possess, in source or binary form. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * * * MEDIA LICENSE ========== * All images and other graphical files ("media") included with this * software are copyright (c) 2015 Netsyms Technologies. You may not distribute * the graphics or any program, source code repository, or other digital storage * media containing them without permission from Netsyms Technologies. * This ban on distribution only applies to publicly available systems. * A password-protected network file share, USB drive, or other storage scheme that * cannot be easily accessed by the public is generally allowed. If in doubt, * contact Netsyms Technologies. If Netsyms Technologies allows or denies * you permission, that decision is considered final and binding. * * You may only use the media for personal, * non-commercial, non-educational use unless: * 1, You have paid for the software and media via the SyMAT website, * or 2, you are using it as part of the 15-day trial period. * Other uses are prohibited without permission. * If any part of this license is deemed unenforcable, the remainder * of the license remains in full effect. */ package net.apocalypselabs.symat; import com.itextpdf.text.Document; import com.itextpdf.text.DocumentException; import com.itextpdf.text.html.simpleparser.HTMLWorker; import com.itextpdf.text.html.simpleparser.StyleSheet; import com.itextpdf.text.pdf.PdfWriter; import java.io.BufferedReader; import java.io.File; import java.io.FileOutputStream; import java.io.IOException; import java.io.InputStreamReader; import java.io.OutputStream; import java.io.PrintStream; import java.io.StringReader; import java.util.List; import java.util.logging.Level; import java.util.logging.Logger; import javax.swing.JFileChooser; import javax.swing.JOptionPane; import javax.swing.SwingUtilities; import javax.swing.filechooser.FileFilter; import javax.swing.filechooser.FileNameExtensionFilter; import org.htmlcleaner.CleanerProperties; import org.htmlcleaner.HtmlCleaner; import org.htmlcleaner.SimpleHtmlSerializer; import org.htmlcleaner.TagNode; import prettify.PrettifyParser; import syntaxhighlight.ParseResult; /** * * @author Skylar */ public class CodeExport extends javax.swing.JInternalFrame { private String codeLang = "js"; private String html; private final String origCode; private String outputTxt = ""; /** * Creates new form CodeExport * * @param code The code. */ public CodeExport(String code) { origCode = code; initComponents(); SwingUtilities.invokeLater(new Runnable() { @Override public void run() { html = genHtml(code); } }); html = genHtml(code); previewPane.setText(html); previewPane.setCaretPosition(0); } /** * Create CodeExport window with a set language for syntax highlighting. * * @param code The code. * @param lang Options are "js" or "python". */ public CodeExport(String code, String lang) { this(code); codeLang = lang; } /** * * @param code * @param lang * @param out */ public CodeExport(String code, String lang, String out) { this(code, lang); outputTxt = out; } private String genHtml(String code) { String css = ""; BufferedReader reader = new BufferedReader( new InputStreamReader(CodeExport.class.getResourceAsStream("pretty.css"))); String line; try { while ((line = reader.readLine()) != null) { css += line; } } catch (IOException ex) { Logger.getLogger(CodeExport.class.getName()).log(Level.SEVERE, null, ex); } html = "<!DOCTYPE html>" + "<html><head>" + "<meta charset=\"utf-8\">" + "<title></title>" + "<style type=\"text/css\"><!--" + css + "--></style>" + "</head>" + "<body>" + "<h1>" + titleBox.getText() + "</h1>"; if (!authBox.getText().equals("")) { html += "<h2>Author: " + authBox.getText() + "</h2>"; } if (!dateBox.getText().equals("")) { html += "<h3>Date: " + dateBox.getText() + "</h3>"; } if (!headerBox.getText().equals("")) { html += "<p class=\"header\">" + headerBox.getText() + "</p>"; } if (outputPlaceBox.getSelectedIndex() == 1) { html += getOutput(); } PrettifyParser parser = new PrettifyParser(); List<ParseResult> parseResults = parser.parse(codeLang, code); html += PrettifyToHtml.toHtml(code, parseResults); if (outputPlaceBox.getSelectedIndex() == 0) { html += getOutput(); } html += "</body></html>"; html = html.replace("\t", "<span class=\"tab\"> </span>"); html = html.replace("\n", "<br>"); HtmlCleaner cleaner = new HtmlCleaner(); CleanerProperties props = cleaner.getProperties(); TagNode node = cleaner.clean(html); html = new SimpleHtmlSerializer(props).getAsString(node); html = html.replace("'", "'"); html = html.replace("<?xml version=\"1.0\" encoding=\"UTF-8\"?>", ""); Debug.println(html); return html; } private String getOutput() { return "<p><b>Output:</b></p><pre class=\"plaintxt\">" + outputTxt.replace("<", "<").replace("&", "&").replace(">", ">").replace("\"", "''") + "\n\n</pre>"; } /** * 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() { jScrollPane1 = new javax.swing.JScrollPane(); previewPane = new javax.swing.JTextPane(); jPanel1 = new javax.swing.JPanel(); titleBox = new javax.swing.JTextField(); jLabel1 = new javax.swing.JLabel(); jLabel2 = new javax.swing.JLabel(); authBox = new javax.swing.JTextField(); dateBox = new javax.swing.JTextField(); jLabel3 = new javax.swing.JLabel(); jScrollPane2 = new javax.swing.JScrollPane(); headerBox = new javax.swing.JTextArea(); jLabel4 = new javax.swing.JLabel(); jButton1 = new javax.swing.JButton(); jPanel2 = new javax.swing.JPanel(); exHtml = new javax.swing.JButton(); exPdf = new javax.swing.JButton(); outputPlaceBox = new javax.swing.JComboBox(); jLabel5 = new javax.swing.JLabel(); setClosable(true); setIconifiable(true); setMaximizable(true); setResizable(true); setTitle("Export Code"); setFrameIcon( new javax.swing.ImageIcon(getClass().getResource("/net/apocalypselabs/symat/icons/export.png"))); // NOI18N previewPane.setEditable(false); previewPane.setContentType("text/html"); // NOI18N jScrollPane1.setViewportView(previewPane); titleBox.setText("SyMAT Project"); jLabel1.setText("Title:"); jLabel2.setText("Author:"); authBox.setText(PrefStorage.getSetting("author", "")); jLabel3.setText("Date:"); headerBox.setColumns(20); headerBox.setLineWrap(true); headerBox.setRows(2); headerBox.setTabSize(4); headerBox.setWrapStyleWord(true); jScrollPane2.setViewportView(headerBox); jLabel4.setText("Header:"); jButton1.setText("Update Preview"); jButton1.addActionListener(new java.awt.event.ActionListener() { public void actionPerformed(java.awt.event.ActionEvent evt) { jButton1ActionPerformed(evt); } }); jPanel2.setBorder(javax.swing.BorderFactory.createTitledBorder("Export to:")); exHtml.setText("HTML"); exHtml.addActionListener(new java.awt.event.ActionListener() { public void actionPerformed(java.awt.event.ActionEvent evt) { exHtmlActionPerformed(evt); } }); exPdf.setText("PDF"); exPdf.addActionListener(new java.awt.event.ActionListener() { public void actionPerformed(java.awt.event.ActionEvent evt) { exPdfActionPerformed(evt); } }); javax.swing.GroupLayout jPanel2Layout = new javax.swing.GroupLayout(jPanel2); jPanel2.setLayout(jPanel2Layout); jPanel2Layout.setHorizontalGroup(jPanel2Layout .createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING) .addGroup(jPanel2Layout.createSequentialGroup().addContainerGap() .addGroup(jPanel2Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING) .addComponent(exPdf, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE) .addComponent(exHtml, javax.swing.GroupLayout.DEFAULT_SIZE, 80, Short.MAX_VALUE)) .addContainerGap())); jPanel2Layout.setVerticalGroup(jPanel2Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING) .addGroup(jPanel2Layout.createSequentialGroup().addGap(18, 18, 18).addComponent(exHtml) .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED).addComponent(exPdf) .addContainerGap(javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))); outputPlaceBox .setModel(new javax.swing.DefaultComboBoxModel(new String[] { "Below code", "Above code", "No" })); outputPlaceBox.setSelectedIndex(2); jLabel5.setText("Include output:"); javax.swing.GroupLayout jPanel1Layout = new javax.swing.GroupLayout(jPanel1); jPanel1.setLayout(jPanel1Layout); jPanel1Layout.setHorizontalGroup(jPanel1Layout .createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING) .addGroup(jPanel1Layout.createSequentialGroup().addContainerGap().addGroup(jPanel1Layout .createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING) .addGroup(jPanel1Layout.createSequentialGroup().addComponent(jLabel5) .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED).addComponent( outputPlaceBox, 0, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)) .addGroup(jPanel1Layout.createSequentialGroup().addComponent(jLabel1).addGap(18, 18, 18) .addComponent(titleBox, javax.swing.GroupLayout.PREFERRED_SIZE, 154, javax.swing.GroupLayout.PREFERRED_SIZE) .addGap(0, 0, Short.MAX_VALUE)) .addGroup( jPanel1Layout.createSequentialGroup() .addGroup(jPanel1Layout .createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING) .addComponent(jLabel2).addComponent(jLabel3)) .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED) .addGroup(jPanel1Layout .createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING) .addComponent(authBox).addComponent(dateBox)))) .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED) .addGroup( jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING, false) .addGroup(jPanel1Layout.createSequentialGroup().addComponent(jLabel4) .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE) .addComponent(jButton1)) .addComponent(jScrollPane2, javax.swing.GroupLayout.DEFAULT_SIZE, 239, Short.MAX_VALUE)) .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED).addComponent(jPanel2, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))); jPanel1Layout.setVerticalGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING) .addGroup(jPanel1Layout.createSequentialGroup().addGap(5, 5, 5) .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING) .addGroup(jPanel1Layout.createSequentialGroup() .addGroup(jPanel1Layout .createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE) .addComponent( titleBox, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE) .addComponent(jLabel1).addComponent(jLabel4).addComponent(jButton1)) .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED) .addGroup(jPanel1Layout .createParallelGroup( javax.swing.GroupLayout.Alignment.LEADING, false) .addComponent(jScrollPane2) .addGroup(jPanel1Layout.createSequentialGroup() .addGroup(jPanel1Layout .createParallelGroup( javax.swing.GroupLayout.Alignment.BASELINE) .addComponent(jLabel2) .addComponent(authBox, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)) .addPreferredGap( javax.swing.LayoutStyle.ComponentPlacement.UNRELATED) .addGroup(jPanel1Layout .createParallelGroup( javax.swing.GroupLayout.Alignment.BASELINE) .addComponent( dateBox, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE) .addComponent(jLabel3)) .addPreferredGap( javax.swing.LayoutStyle.ComponentPlacement.UNRELATED) .addGroup(jPanel1Layout .createParallelGroup( javax.swing.GroupLayout.Alignment.BASELINE) .addComponent(jLabel5).addComponent(outputPlaceBox, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)) .addGap(0, 0, Short.MAX_VALUE))) .addGap(0, 0, Short.MAX_VALUE)) .addComponent(jPanel2, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)) .addGap(0, 0, 0))); javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane()); getContentPane().setLayout(layout); layout.setHorizontalGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING) .addComponent(jScrollPane1, javax.swing.GroupLayout.DEFAULT_SIZE, 583, Short.MAX_VALUE) .addGroup(layout.createSequentialGroup() .addComponent(jPanel1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE) .addGap(0, 10, Short.MAX_VALUE))); layout.setVerticalGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING) .addGroup(layout.createSequentialGroup() .addComponent(jScrollPane1, javax.swing.GroupLayout.DEFAULT_SIZE, 273, Short.MAX_VALUE) .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED) .addComponent(jPanel1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE) .addContainerGap())); pack(); }// </editor-fold>//GEN-END:initComponents private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_jButton1ActionPerformed html = genHtml(origCode); previewPane.setText(html); previewPane.setCaretPosition(0); }//GEN-LAST:event_jButton1ActionPerformed private void exHtmlActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_exHtmlActionPerformed doSave("html"); }//GEN-LAST:event_exHtmlActionPerformed private void exPdfActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_exPdfActionPerformed doSave("pdf"); }//GEN-LAST:event_exPdfActionPerformed private void doSave(String format) { html = genHtml(origCode); JFileChooser fc = new JFileChooser(); FileFilter filter; switch (format) { case "pdf": filter = new FileNameExtensionFilter("Portable Document Format (PDF)", "pdf"); break; default: filter = new FileNameExtensionFilter("Web Document (HTML)", "html"); } fc.setFileFilter(filter); fc.addChoosableFileFilter(filter); int r = fc.showSaveDialog(this); if (r == JFileChooser.APPROVE_OPTION) { String file = FileUtils.getFileWithExtension(fc).getAbsolutePath(); switch (format) { case "html": saveFile(html, file); break; case "pdf": savePdfFile(html, file); break; } } } private void savePdfFile(String html, String path) { try { String k = html; try (OutputStream file = new FileOutputStream(new File(path))) { Document document = new Document(); PdfWriter.getInstance(document, file); document.open(); HTMLWorker htmlWorker = new HTMLWorker(document); StyleSheet styles = new StyleSheet(); styles.loadStyle("com", "color", "green"); styles.loadStyle("kwd", "color", "blue"); styles.loadStyle("pln", "color", "black"); styles.loadStyle("lit", "color", "#0099cc"); styles.loadStyle("pun", "color", "black"); styles.loadStyle("pun", "font-weight", "bold"); htmlWorker.setStyleSheet(styles); htmlWorker.parse(new StringReader(k)); document.close(); savedMsg(); } } catch (IOException | DocumentException e) { JOptionPane.showInternalMessageDialog(this, "Error saving: " + e.getMessage()); } } private void saveFile(String content, String path) { try { PrintStream out = new PrintStream(new FileOutputStream(path)); out.print(content); savedMsg(); } catch (Exception ex) { JOptionPane.showInternalMessageDialog(this, "Error saving: " + ex.getMessage()); } } private void savedMsg() { JOptionPane.showInternalMessageDialog(this, "Export complete!"); } // Variables declaration - do not modify//GEN-BEGIN:variables private javax.swing.JTextField authBox; private javax.swing.JTextField dateBox; private javax.swing.JButton exHtml; private javax.swing.JButton exPdf; private javax.swing.JTextArea headerBox; private javax.swing.JButton jButton1; private javax.swing.JLabel jLabel1; private javax.swing.JLabel jLabel2; private javax.swing.JLabel jLabel3; private javax.swing.JLabel jLabel4; private javax.swing.JLabel jLabel5; private javax.swing.JPanel jPanel1; private javax.swing.JPanel jPanel2; private javax.swing.JScrollPane jScrollPane1; private javax.swing.JScrollPane jScrollPane2; private javax.swing.JComboBox outputPlaceBox; private javax.swing.JTextPane previewPane; private javax.swing.JTextField titleBox; // End of variables declaration//GEN-END:variables }