Util.java
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net.sourceforge.phpdt.internal.compiler.util |
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/*******************************************************************************
* Copyright (c) 2000, 2003 IBM Corporation and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Common Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/cpl-v10.html
*
* Contributors:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package net.sourceforge.phpdt.internal.compiler.util;
import java.io.BufferedInputStream;
import java.io.ByteArrayInputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.util.Locale;
import java.util.MissingResourceException;
import java.util.ResourceBundle;
import java.util.zip.ZipEntry;
import java.util.zip.ZipFile;
import net.sourceforge.phpdt.core.compiler.CharOperation;
import net.sourceforge.phpdt.internal.ui.util.PHPFileUtil;
public class Util {
public static String LINE_SEPARATOR = System.getProperty("line.separator"); //$NON-NLS-1$
public static char[] LINE_SEPARATOR_CHARS = LINE_SEPARATOR.toCharArray();
// public final static char[] SUFFIX_class = ".class".toCharArray();
// //$NON-NLS-1$
// public final static char[] SUFFIX_CLASS = ".CLASS".toCharArray();
// //$NON-NLS-1$
public final static char[] SUFFIX_java = ".java".toCharArray(); //$NON-NLS-1$
public final static char[] SUFFIX_JAVA = ".JAVA".toCharArray(); //$NON-NLS-1$
// public final static char[] SUFFIX_jar = ".jar".toCharArray();
// //$NON-NLS-1$
// public final static char[] SUFFIX_JAR = ".JAR".toCharArray();
// //$NON-NLS-1$
public final static char[] SUFFIX_zip = ".zip".toCharArray(); //$NON-NLS-1$
public final static char[] SUFFIX_ZIP = ".ZIP".toCharArray(); //$NON-NLS-1$
private final static char[] DOUBLE_QUOTES = "''".toCharArray(); //$NON-NLS-1$
private final static char[] SINGLE_QUOTE = "'".toCharArray(); //$NON-NLS-1$
private static final int DEFAULT_READING_SIZE = 8192;
/* Bundle containing messages */
protected static ResourceBundle bundle;
private final static String bundleName = "net.sourceforge.phpdt.internal.compiler.util.messages"; //$NON-NLS-1$
static {
relocalize();
}
/**
* Lookup the message with the given ID in this catalog and bind its
* substitution locations with the given strings.
*/
public static String bind(String id, String binding1, String binding2) {
return bind(id, new String[] { binding1, binding2 });
}
/**
* Lookup the message with the given ID in this catalog and bind its
* substitution locations with the given string.
*/
public static String bind(String id, String binding) {
return bind(id, new String[] { binding });
}
/**
* Lookup the message with the given ID in this catalog and bind its
* substitution locations with the given string values.
*/
public static String bind(String id, String[] bindings) {
if (id == null)
return "No message available"; //$NON-NLS-1$
String message = null;
try {
message = bundle.getString(id);
} catch (MissingResourceException e) {
// If we got an exception looking for the message, fail gracefully
// by just returning
// the id we were looking for. In most cases this is
// semi-informative so is not too bad.
return "Missing message: " + id + " in: " + bundleName; //$NON-NLS-2$ //$NON-NLS-1$
}
// for compatibility with MessageFormat which eliminates double quotes
// in original message
char[] messageWithNoDoubleQuotes = CharOperation.replace(message
.toCharArray(), DOUBLE_QUOTES, SINGLE_QUOTE);
message = new String(messageWithNoDoubleQuotes);
if (bindings == null)
return message;
int length = message.length();
int start = -1;
int end = length;
StringBuffer output = new StringBuffer(80);
while (true) {
if ((end = message.indexOf('{', start)) > -1) {
output.append(message.substring(start + 1, end));
if ((start = message.indexOf('}', end)) > -1) {
int index = -1;
try {
index = Integer.parseInt(message.substring(end + 1,
start));
output.append(bindings[index]);
} catch (NumberFormatException nfe) {
output.append(message.substring(end + 1, start + 1));
} catch (ArrayIndexOutOfBoundsException e) {
output
.append("{missing " + Integer.toString(index) + "}"); //$NON-NLS-2$ //$NON-NLS-1$
}
} else {
output.append(message.substring(end, length));
break;
}
} else {
output.append(message.substring(start + 1, length));
break;
}
}
return output.toString();
}
/**
* Lookup the message with the given ID in this catalog
*/
public static String bind(String id) {
return bind(id, (String[]) null);
}
/**
* Creates a NLS catalog for the given locale.
*/
public static void relocalize() {
try {
bundle = ResourceBundle.getBundle(bundleName, Locale.getDefault());
} catch (MissingResourceException e) {
System.out
.println("Missing resource : " + bundleName.replace('.', '/') + ".properties for locale " + Locale.getDefault()); //$NON-NLS-1$//$NON-NLS-2$
throw e;
}
}
/**
* Returns the given bytes as a char array using a given encoding (null
* means platform default).
*/
public static char[] bytesToChar(byte[] bytes, String encoding)
throws IOException {
return getInputStreamAsCharArray(new ByteArrayInputStream(bytes),
bytes.length, encoding);
}
/**
* Returns the contents of the given file as a byte array.
*
* @throws IOException
* if a problem occured reading the file.
*/
public static byte[] getFileByteContent(File file) throws IOException {
InputStream stream = null;
try {
stream = new BufferedInputStream(new FileInputStream(file));
return getInputStreamAsByteArray(stream, (int) file.length());
} finally {
if (stream != null) {
try {
stream.close();
} catch (IOException e) {
}
}
}
}
/**
* Returns the contents of the given file as a char array. When encoding is
* null, then the platform default one is used
*
* @throws IOException
* if a problem occured reading the file.
*/
public static char[] getFileCharContent(File file, String encoding)
throws IOException {
InputStream stream = null;
try {
stream = new BufferedInputStream(new FileInputStream(file));
return Util.getInputStreamAsCharArray(stream, (int) file.length(),
encoding);
} finally {
if (stream != null) {
try {
stream.close();
} catch (IOException e) {
}
}
}
}
/**
* Returns the given input stream's contents as a byte array. If a length is
* specified (ie. if length != -1), only length bytes are returned.
* Otherwise all bytes in the stream are returned. Note this doesn't close
* the stream.
*
* @throws IOException
* if a problem occured reading the stream.
*/
public static byte[] getInputStreamAsByteArray(InputStream stream,
int length) throws IOException {
byte[] contents;
if (length == -1) {
contents = new byte[0];
int contentsLength = 0;
int amountRead = -1;
do {
int amountRequested = Math.max(stream.available(),
DEFAULT_READING_SIZE); // read at least 8K
// resize contents if needed
if (contentsLength + amountRequested > contents.length) {
System.arraycopy(contents, 0,
contents = new byte[contentsLength
+ amountRequested], 0, contentsLength);
}
// read as many bytes as possible
amountRead = stream.read(contents, contentsLength,
amountRequested);
if (amountRead > 0) {
// remember length of contents
contentsLength += amountRead;
}
} while (amountRead != -1);
// resize contents if necessary
if (contentsLength < contents.length) {
System.arraycopy(contents, 0,
contents = new byte[contentsLength], 0, contentsLength);
}
} else {
contents = new byte[length];
int len = 0;
int readSize = 0;
while ((readSize != -1) && (len != length)) {
// See PR 1FMS89U
// We record first the read size. In this case len is the actual
// read size.
len += readSize;
readSize = stream.read(contents, len, length - len);
}
}
return contents;
}
/**
* Returns the given input stream's contents as a character array. If a
* length is specified (ie. if length != -1), only length chars are
* returned. Otherwise all chars in the stream are returned. Note this
* doesn't close the stream.
*
* @throws IOException
* if a problem occured reading the stream.
*/
public static char[] getInputStreamAsCharArray(InputStream stream,
int length, String encoding) throws IOException {
InputStreamReader reader = null;
reader = encoding == null ? new InputStreamReader(stream)
: new InputStreamReader(stream, encoding);
char[] contents;
if (length == -1) {
contents = CharOperation.NO_CHAR;
int contentsLength = 0;
int amountRead = -1;
do {
int amountRequested = Math.max(stream.available(),
DEFAULT_READING_SIZE); // read at least 8K
// resize contents if needed
if (contentsLength + amountRequested > contents.length) {
System.arraycopy(contents, 0,
contents = new char[contentsLength
+ amountRequested], 0, contentsLength);
}
// read as many chars as possible
amountRead = reader.read(contents, contentsLength,
amountRequested);
if (amountRead > 0) {
// remember length of contents
contentsLength += amountRead;
}
} while (amountRead != -1);
// resize contents if necessary
if (contentsLength < contents.length) {
System.arraycopy(contents, 0,
contents = new char[contentsLength], 0, contentsLength);
}
} else {
contents = new char[length];
int len = 0;
int readSize = 0;
while ((readSize != -1) && (len != length)) {
// See PR 1FMS89U
// We record first the read size. In this case len is the actual
// read size.
len += readSize;
readSize = reader.read(contents, len, length - len);
}
// See PR 1FMS89U
// Now we need to resize in case the default encoding used more than
// one byte for each
// character
if (len != length)
System.arraycopy(contents, 0, (contents = new char[len]), 0,
len);
}
return contents;
}
/**
* Returns the contents of the given zip entry as a byte array.
*
* @throws IOException
* if a problem occured reading the zip entry.
*/
public static byte[] getZipEntryByteContent(ZipEntry ze, ZipFile zip)
throws IOException {
InputStream stream = null;
try {
stream = new BufferedInputStream(zip.getInputStream(ze));
return getInputStreamAsByteArray(stream, (int) ze.getSize());
} finally {
if (stream != null) {
try {
stream.close();
} catch (IOException e) {
}
}
}
}
/**
* Returns true iff str.toLowerCase().endsWith(".jar") ||
* str.toLowerCase().endsWith(".zip") implementation is not creating extra
* strings.
*/
// public final static boolean isArchiveFileName(String name) {
// int nameLength = name == null ? 0 : name.length();
// int suffixLength = SUFFIX_JAR.length;
// if (nameLength < suffixLength) return false;
//
// // try to match as JAR file
// for (int i = 0; i < suffixLength; i++) {
// char c = name.charAt(nameLength - i - 1);
// int suffixIndex = suffixLength - i - 1;
// if (c != SUFFIX_jar[suffixIndex] && c != SUFFIX_JAR[suffixIndex]) {
//
// // try to match as ZIP file
// suffixLength = SUFFIX_ZIP.length;
// if (nameLength < suffixLength) return false;
// for (int j = 0; j < suffixLength; j++) {
// c = name.charAt(nameLength - j - 1);
// suffixIndex = suffixLength - j - 1;
// if (c != SUFFIX_zip[suffixIndex] && c != SUFFIX_ZIP[suffixIndex]) return
// false;
// }
// return true;
// }
// }
// return true;
// }
/**
* Returns true iff str.toLowerCase().endsWith(".class") implementation is
* not creating extra strings.
*/
// public final static boolean isClassFileName(String name) {
// int nameLength = name == null ? 0 : name.length();
// int suffixLength = SUFFIX_CLASS.length;
// if (nameLength < suffixLength) return false;
//
// for (int i = 0; i < suffixLength; i++) {
// char c = name.charAt(nameLength - i - 1);
// int suffixIndex = suffixLength - i - 1;
// if (c != SUFFIX_class[suffixIndex] && c != SUFFIX_CLASS[suffixIndex])
// return false;
// }
// return true;
// }
/**
* Returns true iff str.toLowerCase().endsWith(".java") implementation is
* not creating extra strings.
*/
public final static boolean isJavaFileName(String name) {
return PHPFileUtil.isPHPFileName(name);
// int nameLength = name == null ? 0 : name.length();
// int suffixLength = SUFFIX_JAVA.length;
// if (nameLength < suffixLength) return false;
//
// for (int i = 0; i < suffixLength; i++) {
// char c = name.charAt(nameLength - i - 1);
// int suffixIndex = suffixLength - i - 1;
// if (c != SUFFIX_java[suffixIndex] && c != SUFFIX_JAVA[suffixIndex])
// return false;
// }
// return true;
}
}
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