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org.kie.eclipse.utils.FileUtils Maven / Gradle / Ivy
/*
* Copyright 2015 Red Hat, Inc. and/or its affiliates.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.kie.eclipse.utils;
import java.io.BufferedInputStream;
import java.io.BufferedReader;
import java.io.ByteArrayInputStream;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.net.HttpURLConnection;
import java.net.URL;
import java.net.URLConnection;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Enumeration;
import java.util.List;
import java.util.jar.JarEntry;
import java.util.jar.JarFile;
import org.eclipse.core.resources.ICommand;
import org.eclipse.core.resources.IContainer;
import org.eclipse.core.resources.IFile;
import org.eclipse.core.resources.IFolder;
import org.eclipse.core.resources.IProject;
import org.eclipse.core.resources.IProjectDescription;
import org.eclipse.core.resources.IResource;
import org.eclipse.core.resources.ResourcesPlugin;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IPath;
import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.core.runtime.Path;
import org.eclipse.core.runtime.SubMonitor;
import org.eclipse.jdt.core.IClasspathEntry;
import org.eclipse.jdt.core.IJavaProject;
import org.eclipse.jdt.core.IPackageFragmentRoot;
import org.eclipse.jdt.core.JavaCore;
import org.eclipse.jdt.core.JavaModelException;
import org.eclipse.jdt.internal.core.JavaModelManager;
import org.eclipse.jdt.ui.PreferenceConstants;
public class FileUtils {
private FileUtils() { }
public static String readFile(IFile file) throws CoreException {
InputStream inputStream = file.getContents();
BufferedReader reader = new BufferedReader(new InputStreamReader(inputStream));
StringBuilder sb = new StringBuilder();
try {
char[] buf = new char[1024];
int numRead=0;
while((numRead=reader.read(buf)) != -1){
sb.append(buf, 0, numRead);
}
} catch (IOException e) {
return null;
} finally {
try {
if (reader != null) {
reader.close();
}
if (inputStream != null) {
inputStream.close();
}
}
catch (IOException e) {
// Nothing
}
}
return sb.toString();
}
public static void mkdirs(IResource resource, IProgressMonitor monitor) throws CoreException {
IContainer parent = resource.getParent();
if (!parent.exists()) {
mkdirs(resource.getParent(), monitor);
}
if (resource instanceof IFolder && !resource.exists())
((IFolder)resource).create(true, true, monitor);
}
public static boolean deleteFolder(File file) {
File[] flist = null;
if (file == null) {
return false;
}
if (file.isFile()) {
return file.delete();
}
if (!file.isDirectory()) {
return false;
}
flist = file.listFiles();
if (flist != null && flist.length > 0) {
for (File f : flist) {
if (!deleteFolder(f)) {
return false;
}
}
}
return file.delete();
}
public static int extractJarFile(java.io.File jarFile, IProject project, IProgressMonitor monitor)
throws IOException, CoreException {
JarFile jar = new java.util.jar.JarFile(jarFile);
InputStream is = null;
int fileCount = 0;
try {
// System.out.println("Jar: "+jar.getName());
// for (Entry e : jar.getManifest().getMainAttributes().entrySet()) {
// System.out.println(" "+e.getKey() + "=" + e.getValue());
// }
SubMonitor subMonitor = SubMonitor.convert(monitor, jar.size());
Enumeration enumEntries = jar.entries();
while (enumEntries.hasMoreElements()) {
JarEntry entry = enumEntries.nextElement();
if (entry.isDirectory()) {
IFolder folder = project.getFolder(entry.getName());
if (!folder.exists()) {
folder.create(true, true, monitor);
}
}
else {
subMonitor.setTaskName("Creating file "+entry.getName());
IFile file = project.getFile(entry.getName());
mkdirs(file, monitor);
is = jar.getInputStream(entry);
if (file.exists())
file.setContents(is, true, false, monitor);
else
file.create(is, true, monitor);
++fileCount;
subMonitor.worked(1);
}
}
subMonitor.done();
}
finally {
jar.close();
if (is!=null)
is.close();
}
return fileCount;
}
public static java.io.File downloadFile(URL url, IProgressMonitor monitor) throws IOException {
URLConnection conn = url.openConnection();
if (conn instanceof HttpURLConnection)
((HttpURLConnection)conn).setRequestMethod("GET");
java.io.File jarFile = null;
int length = conn.getContentLength();
final int buffersize = 1024;
final int blocks = length/buffersize;
SubMonitor subMonitor = SubMonitor.convert(monitor, blocks);
InputStream istream = conn.getInputStream();
OutputStream ostream = null;
try {
subMonitor.beginTask("Downloading "+url.getFile()+" from "+url.getHost(), blocks);
jarFile = java.io.File.createTempFile(url.getFile(), null);
if (istream!=null) {
ostream = new FileOutputStream(jarFile);
int read = 0;
byte[] bytes = new byte[buffersize];
int block = 1;
int lastPercentDone = -1;
while ((read = istream.read(bytes)) != -1 && !subMonitor.isCanceled()) {
int percentDone = (int)(100 * ((float)block / (float)blocks));
if (percentDone != lastPercentDone && percentDone<=100) {
subMonitor.setTaskName("Downloading "+url.toString()+" "+percentDone+"%");
lastPercentDone = percentDone;
}
ostream.write(bytes, 0, read);
subMonitor.worked(1);
++block;
}
}
}
catch (Exception e) {
e.printStackTrace();
}
finally {
if (istream!=null)
istream.close();
if (ostream!=null) {
ostream.flush();
ostream.close();
}
if (subMonitor.isCanceled())
return null;
subMonitor.done();
}
return jarFile;
}
public static IProject getProjectHandle(String name) {
return ResourcesPlugin.getWorkspace().getRoot().getProject(name);
}
public static void addJavaBuilder(IJavaProject project, IProgressMonitor monitor) throws CoreException {
IProjectDescription description = project.getProject().getDescription();
ICommand[] commands = description.getBuildSpec();
ICommand[] newCommands = new ICommand[commands.length + 1];
System.arraycopy(commands, 0, newCommands, 0, commands.length);
ICommand javaCommand = description.newCommand();
javaCommand.setBuilderName("org.eclipse.jdt.core.javabuilder");
newCommands[commands.length] = javaCommand;
description.setBuildSpec(newCommands);
project.getProject().setDescription(description, monitor);
}
public static void addMavenBuilder(IJavaProject project, IProgressMonitor monitor) throws CoreException {
IProjectDescription description = project.getProject().getDescription();
ICommand[] commands = description.getBuildSpec();
ICommand[] newCommands = new ICommand[commands.length + 1];
System.arraycopy(commands, 0, newCommands, 0, commands.length);
ICommand mavenCommand = description.newCommand();
mavenCommand.setBuilderName("org.eclipse.m2e.core.maven2Builder");
newCommands[commands.length] = mavenCommand;
description.setBuildSpec(newCommands);
project.getProject().setDescription(description, monitor);
}
public static void addBPMN2Builder(IJavaProject project, IProgressMonitor monitor) throws CoreException {
IProjectDescription description = project.getProject().getDescription();
ICommand[] commands = description.getBuildSpec();
ICommand[] newCommands = new ICommand[commands.length + 2];
System.arraycopy(commands, 0, newCommands, 0, commands.length);
ICommand bpmn2BuilderCommand = description.newCommand();
bpmn2BuilderCommand.setBuilderName("org.eclipse.bpmn2.modeler.core.bpmn2Builder");
newCommands[commands.length] = bpmn2BuilderCommand;
ICommand wstValidationCommand = description.newCommand();
wstValidationCommand.setBuilderName("org.eclipse.wst.validation.validationbuilder");
newCommands[commands.length+1] = wstValidationCommand;
description.setBuildSpec(newCommands);
project.getProject().setDescription(description, monitor);
}
public static void addJavaNature(IProjectDescription projectDescription) {
List list = new ArrayList();
list.addAll(Arrays.asList(projectDescription.getNatureIds()));
list.add("org.eclipse.jdt.core.javanature");
projectDescription.setNatureIds((String[]) list.toArray(new String[list.size()]));
}
public static void addMavenNature(IProjectDescription projectDescription) {
List list = new ArrayList();
list.addAll(Arrays.asList(projectDescription.getNatureIds()));
list.add("org.eclipse.m2e.core.maven2Nature");
projectDescription.setNatureIds((String[]) list.toArray(new String[list.size()]));
}
public static void addBPMN2Nature(IProjectDescription projectDescription) {
List list = new ArrayList();
list.addAll(Arrays.asList(projectDescription.getNatureIds()));
list.add("org.eclipse.bpmn2.modeler.core.bpmn2Nature");
projectDescription.setNatureIds((String[]) list.toArray(new String[list.size()]));
}
public static void createMavenArtifacts(IJavaProject project, String groupId, String artifactId, String version, IProgressMonitor monitor) {
try {
String projectName = project.getProject().getName();
if (groupId==null || groupId.isEmpty())
groupId = projectName + ".group";
if (artifactId==null || artifactId.isEmpty())
artifactId = projectName;
if (version==null || version.isEmpty())
version = "1.0.0-SNAPSHOT";
createProjectFile(project, monitor, generatePomProperties(groupId, artifactId, version), "src/main/resources/META-INF/maven", "pom.properties");
createProjectFile(project, monitor, generateEmptyPom(groupId, artifactId, version), null, "pom.xml");
}
catch (CoreException e) {
e.printStackTrace();
}
}
public static void createKJarArtifacts(IJavaProject project, IProgressMonitor monitor) {
try {
createProjectFile(project, monitor, generateKModule(), "src/main/resources/META-INF", "kmodule.xml");
}
catch (CoreException e) {
e.printStackTrace();
}
}
public static void createGitIgnore(IJavaProject project, IProgressMonitor monitor) {
try {
createProjectFile(project, monitor, generateGitIGnore(), null, ".gitignore");
}
catch (CoreException e) {
e.printStackTrace();
}
}
public static InputStream generateGitIGnore() {
StringBuilder sb = new StringBuilder();
sb.append(".gitignore\n");
sb.append(".classpath\n");
sb.append(".project\n");
sb.append(".settings/\n");
return new ByteArrayInputStream(sb.toString().getBytes());
}
public static InputStream generateKModule() {
StringBuilder sb = new StringBuilder();
sb.append("\n");
sb.append("\n");
// sb.append(" \n");
// sb.append(" \n");
// sb.append(" \n");
//
// sb.append(" \n");
// sb.append(" \n");
// sb.append(" \n");
//
// sb.append(" \n");
// sb.append(" \n");
// sb.append(" \n");
sb.append(" \n");
return new ByteArrayInputStream(sb.toString().getBytes());
}
public static InputStream generatePomProperties(String groupId, String artifactId, String version) {
String pom = "groupId=" + groupId + "\n" + "artifactId=" + artifactId
+ "\n" + "version=" + version + "\n";
return new ByteArrayInputStream(pom.getBytes());
}
public static InputStream generateEmptyPom(String groupId, String artifactId, String version) {
String pom =
"\n" +
"\n" +
" 4.0.0 \n" +
"\n" +
" " + groupId + " \n" +
" " + artifactId + " \n" +
" " + version + " \n" +
" \n";
return new ByteArrayInputStream(pom.toString().getBytes());
}
public static InputStream generatePom(InputStream template, String runtimeVersion, String groupId, String artifactId, String version) {
BufferedInputStream is = new BufferedInputStream(template);
StringBuilder contents = new StringBuilder();
java.util.Scanner scanner = new java.util.Scanner(is);
while (true) {
try {
String line = scanner.nextLine();
if (line.contains("###"))
line = line.replaceFirst("###", groupId);
else if (line.contains("###"))
line = line.replaceFirst("###", artifactId);
else if (line.contains("###"))
line = line.replaceFirst("###", version);
else if (line.contains("###"))
line = line.replaceFirst("###", runtimeVersion);
contents.append(line);
contents.append("\n");
}
catch (Exception e) {
scanner.close();
break;
}
}
return new ByteArrayInputStream(contents.toString().getBytes());
}
public static void createOutputLocation(IJavaProject project, String folderName, IProgressMonitor monitor)
throws JavaModelException, CoreException {
IFolder folder = createFolder(project, folderName, monitor);
IPath path = folder.getFullPath();
JavaModelManager.getJavaModelManager().getPerProjectInfo(project.getProject(), true);
project.setRawClasspath(new IClasspathEntry[0], monitor);
project.setOutputLocation(path, monitor);
}
public static void addFolderToClasspath(IJavaProject project, String folderName, boolean create, IProgressMonitor monitor) throws JavaModelException, CoreException {
List list = new ArrayList();
list.addAll(Arrays.asList(project.getRawClasspath()));
IFolder folder = project.getProject().getFolder(folderName);
if (create || folder.exists()) {
if (create)
createFolder(folder, monitor);
IPackageFragmentRoot ipackagefragmentroot = project.getPackageFragmentRoot(folder);
list.add(JavaCore.newSourceEntry(ipackagefragmentroot.getPath()));
project.setRawClasspath((IClasspathEntry[]) list.toArray(new IClasspathEntry[list.size()]), null);
}
}
public static void addJRELibraries(IJavaProject project, IProgressMonitor monitor) throws JavaModelException {
List list = new ArrayList();
list.addAll(Arrays.asList(project.getRawClasspath()));
list.addAll(Arrays.asList(PreferenceConstants.getDefaultJRELibrary()));
project.setRawClasspath((IClasspathEntry[]) list.toArray(new IClasspathEntry[list.size()]), monitor);
}
public static void addMavenLibraries(IJavaProject project, IProgressMonitor monitor)
throws JavaModelException {
List list = new ArrayList();
list.addAll(Arrays.asList(project.getRawClasspath()));
list.add(JavaCore.newContainerEntry(new Path("org.eclipse.m2e.MAVEN2_CLASSPATH_CONTAINER")));
project.setRawClasspath((IClasspathEntry[]) list.toArray(new IClasspathEntry[list.size()]), monitor);
}
public static void addJUnitLibrary(IJavaProject project, IProgressMonitor monitor)
throws JavaModelException {
List list = new ArrayList();
list.addAll(Arrays.asList(project.getRawClasspath()));
list.add(JavaCore.newContainerEntry(new Path("org.eclipse.jdt.junit.JUNIT_CONTAINER/4")));
project.setRawClasspath((IClasspathEntry[]) list
.toArray(new IClasspathEntry[list.size()]), monitor);
}
public static IFolder createFolder(IJavaProject project, String folderName, IProgressMonitor monitor) throws CoreException {
IFolder folder = project.getProject().getFolder(folderName);
createFolder(folder, monitor);
return folder;
}
public static void createFolder(IFolder folder, IProgressMonitor monitor) throws CoreException {
IContainer container = folder.getParent();
if (container != null && !container.exists()
&& (container instanceof IFolder))
createFolder((IFolder) container, monitor);
if (!folder.exists()) {
folder.create(true, true, monitor);
}
}
public static void createProjectFile(IJavaProject project, IProgressMonitor monitor, InputStream inputstream, String folderName, String fileName) throws CoreException {
IFile file;
if (folderName == null) {
file = project.getProject().getFile(fileName);
} else {
IFolder folder = project.getProject().getFolder(folderName);
file = folder.getFile(fileName);
}
if (!file.exists()) {
if (file.getParent() instanceof IFolder)
createFolder((IFolder)file.getParent(), monitor);
file.create(inputstream, true, monitor);
} else {
file.setContents(inputstream, true, false, monitor);
}
}
public static byte[] readStream(InputStream inputstream) throws IOException {
byte bytes[] = (byte[]) null;
int i = 0;
byte tempBytes[] = new byte[1024];
for (int j = inputstream.read(tempBytes); j != -1; j = inputstream.read(tempBytes)) {
byte tempBytes2[] = new byte[i + j];
if (i > 0) {
System.arraycopy(bytes, 0, tempBytes2, 0, i);
}
System.arraycopy(tempBytes, 0, tempBytes2, i, j);
bytes = tempBytes2;
i += j;
}
return bytes;
}
}
