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Diffstat (limited to 'org.eclipse.debug.examples.core/src_ant/org/eclipse/debug/examples/ant/tasks/PreProcessor.java')
-rw-r--r--org.eclipse.debug.examples.core/src_ant/org/eclipse/debug/examples/ant/tasks/PreProcessor.java295
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diff --git a/org.eclipse.debug.examples.core/src_ant/org/eclipse/debug/examples/ant/tasks/PreProcessor.java b/org.eclipse.debug.examples.core/src_ant/org/eclipse/debug/examples/ant/tasks/PreProcessor.java
deleted file mode 100644
index 59baccb85..000000000
--- a/org.eclipse.debug.examples.core/src_ant/org/eclipse/debug/examples/ant/tasks/PreProcessor.java
+++ /dev/null
@@ -1,295 +0,0 @@
-/*******************************************************************************
- * Copyright (c) 2005, 2008 IBM Corporation and others.
- * All rights reserved. This program and the accompanying materials
- * are made available under the terms of the Eclipse Public License v1.0
- * which accompanies this distribution, and is available at
- * http://www.eclipse.org/legal/epl-v10.html
- *
- * Contributors:
- * IBM Corporation - initial API and implementation
- * Bjorn Freeman-Benson - initial API and implementation
- *******************************************************************************/
-package org.eclipse.debug.examples.ant.tasks;
-
-import java.io.BufferedReader;
-import java.io.File;
-import java.io.FileReader;
-import java.io.FileWriter;
-import java.io.IOException;
-import java.util.HashSet;
-import java.util.Iterator;
-import java.util.Set;
-import java.util.Vector;
-import java.util.regex.Matcher;
-import java.util.regex.Pattern;
-
-import org.apache.tools.ant.BuildException;
-import org.apache.tools.ant.DirectoryScanner;
-import org.apache.tools.ant.Task;
-import org.apache.tools.ant.types.FileSet;
-import org.apache.tools.ant.util.FileUtils;
-
-/**
- * Java preprocessor for code examples. Used to export source code for
- * example plug-ins with parts of code missing/inserted etc., for
- * various exercises.
- * <p>
- * The preprocessor looks for #ifdef statements in java comments, and is
- * run with a set of symbols. For example:
- * <pre>
- * //#ifdef ex1
- * ... code to insert when 'ex1' symbol is on
- * //#else
- * ... code to insert when not 'ex1'
- * //#endif
- * </pre>
- * </p>
- */
-public class PreProcessor extends Task {
-
- private Vector fFileSets = new Vector();
- private File fDestDir = null;
- private Set fSymbols = new HashSet();
- private FileUtils fUtils = FileUtils.getFileUtils();
-
- // possible states
- private static final int STATE_OUTSIDE_CONDITION = 0;
- private static final int STATE_TRUE_CONDITION = 1;
- private static final int STATE_FALSE_CONDITION = 2;
- private static final int STATE_POST_TRUE_CONDITION = 3;
-
- // matchers
- private Matcher IF_DEF_MATCHER = Pattern.compile("#ifdef\\s+\\w+").matcher("");
- private Matcher ELSE_IF_MATCHER = Pattern.compile("#elseif\\s+\\w+").matcher("");
- private Matcher ELSE_MATCHER = Pattern.compile("#else$|#else\\W+").matcher("");
- private Matcher END_MATCHER = Pattern.compile("#endif").matcher("");
-
-
- /**
- * Constructs a new preprocessor task
- */
- public PreProcessor() {
- }
-
- /**
- * Adds a set of files to process.
- *
- * @param set a set of files to process
- */
- public void addFileset(FileSet set) {
- fFileSets.addElement(set);
- }
-
- /**
- * Sets the destination directory for processed files.
- *
- * @param destDir destination directory for processed files
- */
- public void setDestdir(File destDir) {
- fDestDir = destDir;
- }
-
- /**
- * Sets the symbols that are "on" for the preprocessing.
- *
- * @param symbols symbols that are "on" for the preprocessing
- */
- public void setSymbols(String symbols) {
- String[] strings = symbols.split(",");
- for (int i = 0; i < strings.length; i++) {
- String string = strings[i].trim();
- if (string.length() > 0) {
- fSymbols.add(string);
- }
- }
- }
-
- public void execute() throws BuildException {
- if (fSymbols.size() == 0) {
- throw new BuildException("No symbols specified for preprocessor");
- }
- if (fFileSets.isEmpty()) {
- throw new BuildException("No filesets specified for processing");
- }
- if (!fDestDir.exists()) {
- throw new BuildException("destdir does not exist: " + fDestDir.getAbsolutePath());
- }
- StringBuffer buf = new StringBuffer("Symbols: ");
- String[] symbols = (String[]) fSymbols.toArray(new String[fSymbols.size()]);
- for (int i = 0; i < symbols.length; i++) {
- String symbol = symbols[i];
- buf.append(symbol);
- if(i < (symbols.length -1)) {
- buf.append(", ");
- }
- }
- log(buf.toString());
-
- Iterator fileSets = fFileSets.iterator();
- while (fileSets.hasNext()) {
- FileSet fileSet = (FileSet) fileSets.next();
- DirectoryScanner scanner = fileSet.getDirectoryScanner(getProject());
- String[] includedFiles = scanner.getIncludedFiles();
- File baseDir = fileSet.getDir(getProject());
- for (int i = 0; i < includedFiles.length; i++) {
- String fileName = includedFiles[i];
- processFile(baseDir, fileName, fDestDir);
- }
- }
-
- }
-
- /**
- * Process the file
- * @param baseDir base directory source file is relative to
- * @param fileName source file name
- * @param destDir root destination directory
- */
- private void processFile(File baseDir, String fileName, File destDir) throws BuildException {
- File destFile = new File(destDir, fileName);
- File srcFile = new File(baseDir, fileName);
- File dir = destFile.getParentFile();
- if (!dir.exists()) {
- dir.mkdirs();
- }
- String contents = null;
- if (fileName.endsWith(".java")) {
- contents = preProcessFile(srcFile, "//#");
- } else if (fileName.equals("plugin.xml")) {
- contents = preProcessFile(srcFile, null);
- }
- if (contents == null) {
- // no change, just copy file
- try {
- fUtils.copyFile(srcFile, destFile);
- } catch (IOException e) {
- throw new BuildException(e);
- }
- } else {
- // write new file
- FileWriter writer;
- try {
- writer = new FileWriter(destFile);
- writer.write(contents);
- writer.close();
- } catch (IOException e) {
- throw new BuildException(e);
- }
-
- }
- }
-
- /**
- * Preprocesses a file
- *
- * @param srcFile the file to process
- * @param strip chars to stip off lines in a true condition, or <code>null</code>
- * @return
- */
- public String preProcessFile(File srcFile, String strip) {
- try {
- FileReader fileReader = new FileReader(srcFile);
- BufferedReader reader = new BufferedReader(fileReader);
- StringBuffer buffer = new StringBuffer();
- String line = reader.readLine();
- String activeSymbol = null;
- int state = STATE_OUTSIDE_CONDITION;
- boolean changed = false;
- while (line != null) {
- boolean ifdef = IF_DEF_MATCHER.reset(line).find();
- boolean elseif = ELSE_IF_MATCHER.reset(line).find();
- boolean elze = ELSE_MATCHER.reset(line).find();
- boolean endif = END_MATCHER.reset(line).find();
- boolean commandLine = ifdef || elseif || elze || endif;
- boolean written = false;
- switch (state) {
- case STATE_OUTSIDE_CONDITION:
- if (ifdef) {
- String condition = line.substring(IF_DEF_MATCHER.start(), IF_DEF_MATCHER.end());
- String[] strings = condition.split("\\s+");
- activeSymbol = strings[1].trim();
- if (fSymbols.contains(activeSymbol)) {
- state = STATE_TRUE_CONDITION;
- } else {
- state = STATE_FALSE_CONDITION;
- }
- } else if (elseif) {
- throw new BuildException("#elseif encountered without corresponding #ifdef");
- } else if (elze) {
- throw new BuildException("#else encountered without corresponding #ifdef (" + srcFile.getPath() + ")");
- } else if (endif) {
- throw new BuildException("#endif encountered without corresponding #ifdef");
- }
- break;
- case STATE_TRUE_CONDITION:
- if (elze || elseif) {
- state = STATE_POST_TRUE_CONDITION;
- break;
- } else if (endif) {
- state = STATE_OUTSIDE_CONDITION;
- break;
- } else if (ifdef) {
- throw new BuildException("illegal nested #ifdef");
- }
- break;
- case STATE_FALSE_CONDITION:
- if (elseif) {
- String condition = line.substring(ELSE_IF_MATCHER.start(), ELSE_IF_MATCHER.end());
- String[] strings = condition.split("\\s+");
- activeSymbol = strings[1].trim();
- if (fSymbols.contains(activeSymbol)) {
- state = STATE_TRUE_CONDITION;
- } else {
- state = STATE_FALSE_CONDITION;
- }
- } else if (elze) {
- state = STATE_TRUE_CONDITION;
- break;
- } else if (endif) {
- state = STATE_OUTSIDE_CONDITION;
- break;
- } else if (ifdef) {
- throw new BuildException("illegal nested #ifdef");
- }
- break;
- case STATE_POST_TRUE_CONDITION:
- if (endif) {
- state = STATE_OUTSIDE_CONDITION;
- break;
- } else if (ifdef) {
- throw new BuildException("illegal nested #ifdef");
- }
- break;
- }
- if (!commandLine) {
- if (state == STATE_OUTSIDE_CONDITION || state == STATE_TRUE_CONDITION) {
- if (state == STATE_TRUE_CONDITION && strip != null) {
- if (line.startsWith(strip)) {
- line = line.substring(strip.length());
- }
- }
- buffer.append(line);
- buffer.append("\n");
- written = true;
- }
- }
- changed = changed || !written;
- line = reader.readLine();
- }
- if (!changed) {
- return null;
- }
- return buffer.toString();
- } catch (IOException e) {
- throw new BuildException(e);
- }
- }
-
- public static void main(String[] args) {
- PreProcessor processor = new PreProcessor();
- processor.setSymbols("ex2");
- String string = processor.preProcessFile(new File("c:\\eclipse3.1\\dev\\example.debug.core\\src\\example\\debug\\core\\launcher\\PDALaunchDelegate.java"), "//#");
- //String string = processor.preProcessFile(new File("c:\\eclipse3.1\\dev\\example.debug.core\\plugin.xml"), null);
- System.out.println(string);
- }
-}

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