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/*******************************************************************************
* Copyright (c) 2007, 2013 Symbian Software Limited 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:
* Bala Torati (Symbian) - Initial API and implementation
* Mark Espiritu (VastSystems) - bug 215283
* Raphael Zulliger (Indel AG) - [367482] fixed resource leak
* Doug Schaefer (QNX) - added different start and end patterns for macros
*******************************************************************************/
package org.eclipse.cdt.core.templateengine.process;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.RandomAccessFile;
import java.net.URL;
import java.util.HashSet;
import java.util.Map;
import java.util.Set;
import org.eclipse.core.resources.IFolder;
import org.eclipse.core.resources.IProject;
import org.eclipse.core.runtime.CoreException;
import com.ibm.icu.text.MessageFormat;
/**
* Acts as helper class for process the processes i.e., copy, replace and append files.
*/
public class ProcessHelper {
public static final String CONDITION = "condition"; //$NON-NLS-1$
public static final String START_PATTERN = "$("; //$NON-NLS-1$
public static final String END_PATTERN = ")"; //$NON-NLS-1$
public static final String EQUALS = "=="; //$NON-NLS-1$
public static final String NOT_EQUALS = "!="; //$NON-NLS-1$
/**
* This method is to append the given contents into a file.
*
* @param fileContents contents which are appended to the file.
* @param toFile a file to append contents.
* @throws IOException exception while writing contents into a file
* @since 4.0
*/
public static void appendFile(String fileContents, File toFile) throws IOException {
RandomAccessFile raf = null;
if (!toFile.exists()) {
throw new FileNotFoundException(MessageFormat.format(
Messages.getString("ProcessHelper.fileNotFound"), //$NON-NLS-1$
toFile.getPath()));
} else {
try {
raf = new RandomAccessFile(toFile, "rw"); //$NON-NLS-1$
raf.skipBytes((int) raf.length());
raf.writeBytes(fileContents);
} finally {
if(raf != null) {
raf.close();
}
}
}
}
/**
* This method returns a vector of all replace marker strings. (e.g.,
* $(item), vector contains 'item' as one item) is the end pattern.
*
* @param str A given string possibly containing markers.
* @return the set of names occurring within markers
* @since 4.0
*/
public static Set<String> getReplaceKeys(String str) {
return getReplaceKeys(str, START_PATTERN, END_PATTERN);
}
/**
* This method returns a vector of all replace marker strings. (e.g.,
* $(item), vector contains 'item' as one item) is the end pattern.
*
* @param str A given string possibly containing markers.
* @param startPattern token to start macro replacement
* @param endPattern token to end macro replacement
* @return the set of names occurring within markers
* @since 5.5
*/
public static Set<String> getReplaceKeys(String str, String startPattern, String endPattern) {
Set<String> replaceStrings = new HashSet<String>();
int start= 0;
int end= 0;
while ((start = str.indexOf(startPattern, start)) >= 0) {
end = str.indexOf(endPattern, start);
if (end != -1) {
replaceStrings.add(str.substring(start + startPattern.length(), end));
start = end + endPattern.length();
} else {
start++;
}
}
return replaceStrings;
}
/**
* This method takes a URL as parameter to read the contents, and to add
* into a string buffer.
*
* @param source URL to read the contents.
* @return string contents of a file specified in the URL source path.
* @since 4.0
*/
public static String readFromFile(URL source) throws IOException {
char[] chars = new char[4092];
InputStreamReader contentsReader = null;
StringBuilder buffer = new StringBuilder();
if (!new java.io.File(source.getFile()).exists()) {
throw new FileNotFoundException(MessageFormat.format(
Messages.getString("ProcessHelper.fileNotFound"), //$NON-NLS-1$
source.getFile()));
} else {
contentsReader = new InputStreamReader(source.openStream());
int c;
do {
c = contentsReader.read(chars);
if (c == -1)
break;
buffer.append(chars, 0, c);
} while (c != -1);
contentsReader.close();
}
return buffer.toString();
}
/**
* This method reads contents from source, and writes the contents into
* destination file.
*
* @param source URL to read the contents.
* @param dest destination file to write the contents.
* @since 4.0
*/
public static void copyBinaryFile(URL source, File dest) throws IOException {
byte[] bytes = new byte[4092];
if (source != null && dest != null) {
File file = new File(source.getFile());
if (file.isFile()) {
FileInputStream in = null;
FileOutputStream out = null;
try {
in = new FileInputStream(file);
out = new FileOutputStream(dest);
int len;
while ((len = in.read(bytes)) != -1) {
out.write(bytes, 0, len);
}
} finally {
try {
if (in != null)
in.close();
} finally {
if (out != null)
out.close();
}
}
}
}
}
/**
* This method creates the directories in the parent folder.
* @param projectHandle
* @param parentFolder
* @throws CoreException
*
* @since 4.0
*/
public static void mkdirs(IProject projectHandle, IFolder parentFolder) throws CoreException {
if (parentFolder.getProjectRelativePath().equals(projectHandle.getProjectRelativePath())) {
return;
}
if (!parentFolder.getParent().exists()) {
mkdirs(projectHandle, projectHandle.getFolder(parentFolder.getParent().getProjectRelativePath()));
}
parentFolder.create(true, true, null);
}
/**
* @param string
* @param macros
* @param valueStore
* @return the macro value after expanding the macros.
*
* @since 4.0
*/
public static String getValueAfterExpandingMacros(String string, Set<String> macros, Map<String, String> valueStore) {
return getValueAfterExpandingMacros(string, macros, valueStore, START_PATTERN, END_PATTERN);
}
/**
* @param string
* @param macros
* @param valueStore
* @return the macro value after expanding the macros.
*
* @since 5.5
*/
public static String getValueAfterExpandingMacros(String string, Set<String> macros, Map<String, String> valueStore,
String startPattern, String endPattern) {
for (String key : macros) {
String value = valueStore.get(key);
if (value != null) {
string = string.replace(startPattern + key + endPattern, value);
}
}
return string;
}
/**
* @param macro
* @return the replacement marker string
*
* @since 4.0
*/
public static String getReplaceMarker(String macro) {
return START_PATTERN + macro + END_PATTERN;
}
}
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