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/*
* Created on Apr 14, 2011
*
* PLACE_YOUR_DISTRIBUTION_STATEMENT_RIGHT_HERE
*/
package org.eclipse.osee.ote.ui.message.watch;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.FilenameFilter;
import java.io.IOException;
import java.io.OutputStreamWriter;
import java.util.ArrayList;
import java.util.Collection;
import java.util.HashMap;
import java.util.HashSet;
import java.util.List;
import java.util.Map;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import org.eclipse.osee.framework.jdk.core.type.HashCollection;
import org.eclipse.osee.framework.jdk.core.util.Lib;
/**
* @author Michael P. Masterson
*/
public class SignalStripper {
/**
*
* @param args Requires one argument
* @throws IOException
*/
public static void main(String[] args) throws IOException {
if( args.length != 1 )
{
throw new IllegalArgumentException("Usage: SignalStripper <Path to folder containing java scripts>");
}
File folderToStartAt = new File(args[0]);
new SignalStripper().buildMwiForEachScript(folderToStartAt);
}
private void buildMwiForEachScript(File folderToStartAt) throws FileNotFoundException {
File[] scriptFiles = findFiles(folderToStartAt);
System.out.println("Updating " + scriptFiles.length + " projects...");
for( File project : scriptFiles ){
generateMwi(project);
}
System.out.println("Done.");
}
/**
* @param folderToStartAt
* @return
* @throws FileNotFoundException
*/
private File[] findFiles(File folderToStartAt) throws FileNotFoundException {
if( !folderToStartAt.exists() || !folderToStartAt.isDirectory() )
throw new FileNotFoundException("Workspace root not found:" + folderToStartAt.getAbsolutePath());
File[] scriptProjects = folderToStartAt.listFiles(new FilenameFilter() {
@Override
public boolean accept(File dir, String name) {
return name.endsWith(".java");
}
});
return scriptProjects;
}
private void generateMwi(File scriptFile) {
try {
System.out.println("-----------------------------------------------------------------");
System.out.println("Looking at script " + scriptFile.getName());
String fileAsString = Lib.fileToString(scriptFile);
String mwiAsString = generateStringToWrite(fileAsString);
if( mwiAsString != null )
writeMwi(scriptFile, mwiAsString);
else {
System.err.println("No messages found for " + scriptFile);
System.err.flush();
}
}
catch (IOException ex) {
System.err.println("Problem writing mwi files.");
ex.printStackTrace();
}
}
/**
*
* @param fileAsString
* @return String to use when writing an mwi file or null if something went wrong
* @throws IOException
*/
public String generateStringToWrite(String fileAsString) {
HashCollection<String, String> fullyQualifiedMessageNameToElementListMap = getMessageClassToElementsNamesMap(fileAsString);
String mwiAsString = generateMwiAsString(fullyQualifiedMessageNameToElementListMap);
return mwiAsString;
}
private String generateMwiAsString(HashCollection<String, String> fullyQualifiedMessageNameToElementListMap) {
StringBuilder builder = new StringBuilder();
for( String className : fullyQualifiedMessageNameToElementListMap.keySet())
{
Collection<String> elements = fullyQualifiedMessageNameToElementListMap.getValues(className);
for(String element : elements)
{
builder.append(className).append("+").append(element).append("\n");
}
}
if( builder.length() == 0)
return null;
else
return "version=2.0\n" + builder.toString();
}
private void writeMwi(File scriptFile, String mwiAsString) throws IOException {
String absolutePath = scriptFile.getAbsolutePath();
String fileNameWithoutExtension = absolutePath.substring(0, absolutePath.length()-5);
File outputFile = new File(fileNameWithoutExtension + ".mwi");
BufferedWriter outputStream = new BufferedWriter(new OutputStreamWriter(new FileOutputStream(outputFile), "UTF-8"));
System.out.println("Writing " + outputFile.getName());
outputStream.write(mwiAsString);
outputStream.flush();
outputStream.close();
}
private HashCollection<String, String> getMessageClassToElementsNamesMap(String fileAsString) {
List<String> importedMessages = extractMessageImports(fileAsString);
Map<String, String> variableNameToMessageClassNameMap = findVariablesAndCreateVariableToClassMap(importedMessages,fileAsString);
HashCollection<String, String> messageClassToElementNamesMap = findElementsUsed(variableNameToMessageClassNameMap,fileAsString);
return messageClassToElementNamesMap;
}
private List<String> extractMessageImports(String fileAsString) {
List<String> retVal = new ArrayList<String>();
Pattern pattern = Pattern.compile("import ((\\w|\\.)+?\\.[A-Z0-9_]+);");
Matcher matcher = pattern.matcher(fileAsString);
while( matcher.find()){
String fullyQualifiesMessageClass = matcher.group(1);
if( fullyQualifiesMessageClass.contains("enum"))
continue;
retVal.add(fullyQualifiesMessageClass);
}
return retVal;
}
private Map<String, String> findVariablesAndCreateVariableToClassMap(List<String> importedMessages, String fileAsString) {
Map<String, String> retVal = new HashMap<String, String>();
for( String fullyQualifiedMessage : importedMessages)
{
String[] split = fullyQualifiedMessage.split("\\.");
String className = split[split.length-1];
String variableName = findVariableNameFor(className, fileAsString);
retVal.put(variableName, fullyQualifiedMessage);
}
return retVal;
}
private String findVariableNameFor(String className, String fileAsString) {
Pattern pattern = Pattern.compile("\\s" + className + "\\s+(\\w+)\\s*(\\=|;)");
Matcher matcher = pattern.matcher(fileAsString);
if( matcher.find())
{
return matcher.group(1);
}
return null;
}
private HashCollection<String, String> findElementsUsed(Map<String, String> variableNameToMessageClassNameMap, String fileAsString) {
HashCollection<String, String> retVal = new HashCollection<String, String>(false,HashSet.class);
Pattern pattern = Pattern.compile("\\W(\\w+)\\.([A-Z0-9_]+)\\.");
Matcher matcher = pattern.matcher(fileAsString);
while( matcher.find()) {
String variable = matcher.group(1);
String className = variableNameToMessageClassNameMap.get(variable);
String elementName = matcher.group(2);
if( className != null) // it's possible someone forgot to instantiate something
retVal.put(className, elementName);
else {
retVal.size();
}
}
return retVal;
}
}
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