/*
* Copyright (c) 2008 Nokia Corporation and/or its subsidiary(-ies).
* All rights reserved.
* This component and the accompanying materials are made available
* under the terms of "Eclipse Public License v1.0"
* which accompanies this distribution, and is available
* at the URL "http://www.eclipse.org/legal/epl-v10.html".
*
* Initial Contributors:
* Nokia Corporation - initial contribution.
*
* Contributors:
*
* Description:
*
*/
package com.nokia.mj.impl.fileutils;
import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.lang.IllegalArgumentException;
import java.lang.SecurityException;
import java.util.Enumeration;
import java.util.Random;
import java.util.Vector;
import javax.microedition.io.Connector;
import com.nokia.mj.impl.rt.support.Finalizer;
import com.nokia.mj.impl.rt.support.Jvm;
import com.nokia.mj.impl.utils.Logger;
import com.nokia.mj.impl.utils.Tokenizer;
/**
* FileUtility provides File handling APIs for internal use in OMJ.
*
* <p>
* <strong>Creating FileUtility</strong>
* <p>
* The pathname used to create the FileUtility object must always be abolute. An
* absolute pathname is complete in that no other information is required in
* order to locate the file that it denotes. A relative pathname, in contrast,
* must be interpreted in terms of information taken from some other pathname.
* Relative paths cannot be passed to the constructor of FileUtility.
* FileUtility.getCanonicalPath() can be used to resolve relative paths to
* absolute path.
* <p>
* File URL can also be used to create FileUtility object. The format of the
* input string used to access a FileUtility must follow the format of a
* fully-qualified, absolute path file name as described by the file URL format
* in IETF RFCs 1738 & 2396.
*
* <p>
* <strong>FileUtility Behavior</strong>
* <p>
* FileUtility can be created immeterial of whether the intended iTarget exists
* or not. This behavior allows the creation of new files and directories on a
* file system. For example, the following code snippet can be used to create a
* file on the file system.
*
* <pre>
* try
* {
* FileUtility fileTarget = new FileUtility("/home/user1/newFile.txt");
* // If no exception is thrown, URI is valid, but file may or may not exist
*
* if (!fileTarget.exists())
* {
* fileTarget.createNewFile();
* }
*
* fileTarget = null;
* }
* catch (IOException ex)
* {
* }
* </pre>
*
* Developers should always check for the file's or directory's existence after
* a construction to determine if the file or directory actually exists.
* Similarly, files or directories can be deleted using the delete() method.
*
* <p>
* <strong>Streams in FileUtility</strong>
* <p>
* Input and output streams may be opened and closed multiple times on a
* FileUtility instance.<br/>
*
* All FileUtility instances have one underlying InputStream and one
* OutputStream. Opening a DataInputStream counts as opening an InputStream, and
* opening a DataOutputStream counts as opening an OutputStream. A FileUtility
* instance can have only one InputStream and one OutputStream open at any one
* time. Trying to open more than one InputStream or more than one OutputStream
* from a StreamConnection causes an IOException. Further detials can be found
* in Common Streams.
* <p>
* Instances of the FileUtility class are immutable; that is, once created, the
* pathname represented by a FileUtility object will never change.
*
*/
public final class FileUtility
{
static
{
try
{
Jvm.loadSystemLibrary("javafileutils");
}
catch (Exception e)
{
Logger.ELOG(Logger.EJavaFile, "Unable to load javafileutils dll");
}
}
// Contains the iTarget to which the instance of FileUtility is pointing to.
private FileURL iTarget;
private Finalizer iFinalizer;
private FileStreamHandler iStreamHandler;
private int iDrmIntent;
private boolean iExecuteIntent;
/**
* File name passed here should be absolute path.
*
* @param aFilePath
* file/directory that FileUtility must work on.
*/
public FileUtility(String aFilePath)
{
this(aFilePath, FileDRMContentHandler.Execute, false);
}
/**
* Constructs a FileUtility with given parameters. This is to be used when
* trying to access DRM protected content.
*
* @param aFilePath
* absolute path of the file/directory.
* @param aDrmIntent
* intent with which the user wants to open the file. The DRM
* intent specified must be one of the values present in
* FileDRMContentHandler
* @param aExecuteIntent
* specifies whether to execute the intent when an InputStream is
* opened on the file.
* @see FileDRMContentHandler
*/
public FileUtility(String aFilePath, int aDrmIntent, boolean aExecuteIntent)
{
// Create a new FileURL that needs to be used internally.
iTarget = new FileURL(aFilePath);
iFinalizer = registerFinalize();
iStreamHandler = null;
iDrmIntent = aDrmIntent;
iExecuteIntent = aExecuteIntent;
}
/**
* Registers with Finalizer to call a method when the object gets collected
* by GC
*
* @return Finalizer object that will be notified when GC happens
*/
private Finalizer registerFinalize()
{
return new Finalizer()
{
public void finalizeImpl()
{
doFinalize();
}
};
}
/**
* Creates a new empty file in the specified directory, using the given
* prefix and suffix strings to generate its name. If this method returns
* successfully then it is guaranteed that:
* <ol>
* <li>The file denoted by the returned abstract pathname did not exist
* before this method was invoked, and</li>
* <li>Neither this method nor any of its variants will return the same
* abstract pathname again in the current invocation of the virtual machine.
* </li>
* </ol>
* <p>
* The prefix argument must be at least three characters long. It is
* recommended that the prefix be a short, meaningful string such as "hjb"
* or "mail".<br/>
* The suffix argument may be null, in which case the suffix ".tmp" will be
* used. <br/>
* The directory argument should not be null and must provide a directory to
* which the file has to be created.
* <p>
* New file will be generated by concatenating the prefix, five or more
* internally-generated characters, and the suffix.
*
* @param aPrefix
* The prefix string to be used in generating the file's name
* must be at least three characters long
* @param aSuffix
* The suffix string to be used in generating the file's name may
* be null, in which case the suffix ".tmp" will be used
* @param aDirectory
* The directory in which the file is to be created
* @return A new FileUtility instance denoting the newly created file.
* @throws IOException
* if the file could not be created or the directory does not
* exist
* @throws IllegalArgumentException
* if the prefix is fewer than three characters or directory
* parameter is null
* @throws SecurityException
* if access was not allowed to create a file in the directory
* specified
*/
public static FileUtility createTempFile(String aPrefix, String aSuffix,
FileUtility aDirectory) throws IOException
{
Logger.LOG(Logger.EJavaFile, Logger.EInfo,
"--> FileUtility.createTempFile() Prefix: " + aPrefix
+ " Suffix: " + aSuffix);
if ((aPrefix.length() < 3) || (null == aDirectory))
{
throw new IllegalArgumentException("Directory passed is null or "
+ " file prefix is invalid");
}
if (!aDirectory.exists())
{
Logger.WLOG(Logger.EJavaFile, " FileUtility.createTempFile(): "
+ "Directory specified does not exist.");
throw new IOException(FileUtilityErrorStrings.TEMP_DIR_NOT_PRESENT
+ ": " + aDirectory);
}
if (!aDirectory.isDirectory())
{
Logger.WLOG(Logger.EJavaFile, " FileUtility.createTempFile(): "
+ "Argument passed is a file.");
throw new IOException(FileUtilityErrorStrings.TARGET_POINTS_TO_FILE
+ ": " + aDirectory);
}
if (null == aSuffix)
{
aSuffix = ".tmp";
}
Random generator = new Random();
int generated = 0;
String midString, file;
String parent = aDirectory.getPath() + aDirectory.getName();
char separator = '/';
if (parent.indexOf('\\') != -1)
{
separator = '\\';
}
if (!parent.endsWith("" + separator))
{
parent += separator;
}
do
{
// The file name generated should be unique in the folder.
generated = generator.nextInt();
midString = "" + generated;
midString = midString.substring(midString.length() - 5);
file = aPrefix + midString + aSuffix;
}
while (_exists(parent + file));
Logger.LOG(Logger.EJavaFile, Logger.EJavaFile,
" FileUtility.createTempFile(): Attempting to create "
+ parent + file);
// Create the temporary file
FileUtility newTempFile = new FileUtility(parent + file);
if (!newTempFile.createNewFile())
{
Logger.WLOG(Logger.EJavaFile,
" FileUtility.createTempFile(): Create failed.");
// File could not be created.
throw new IOException(FileUtilityErrorStrings.UNABLE_TO_CREATE_FILE
+ ": " + newTempFile);
}
Logger.LOG(Logger.EJavaFile, Logger.EInfo,
"<-- FileUtility.createTempFile()");
return newTempFile;
}
/**
* Resolves incomplete path by prefixing the path with one of the roots of
* the file system.
* <p>
*
* <pre>
* Example of S60:
* String resolved = FileUtility.resolve("\\data\\images\\existingFile");
* // resolved will be C:\data\images\existingFile
* </pre>
*
* @param aPath
* incomplete path that does not contain drive information.
* @return resolved path or null if not found
*/
public static String resolveDrive(String aPath)
{
Logger.LOG(Logger.EJavaFile, Logger.EInfo,
"--> FileUtility.resolveDrive() Path: " + aPath);
String retVal = null;
String path = aPath;
try
{
retVal = FilePlatformSpecifics.resolveDrive(path);
}
catch (Exception e)
{
retVal = null;
}
Logger.LOG(Logger.EJavaFile, Logger.EInfo,
"<-- FileUtility.resolveDrive() returns: " + retVal);
return retVal;
}
/**
* A canonical pathname is both absolute and unique. The precise definition
* of canonical form is system-dependent. This method first converts this
* pathname to absolute form if necessary, and then maps it to its unique
* form in a system-dependent way. This typically involves removing
* redundant names such as "." and ".." from the pathname, resolving
* symbolic links (on UNIX platforms), and converting drive letters to a
* standard case (on Microsoft Windows platforms).
* <p>
* Every pathname that denotes an existing file or directory has a unique
* canonical form. Every pathname that denotes a nonexistent file or
* directory also has a unique canonical form.
*
* @param aPath
* @return The canonical pathname string denoting the same file or
* directory.
* @throws IOException
* If an I/O error occurs, which is possible because the
* construction of the canonical pathname may require filesystem
* queries
*
*/
public static String getCanonicalPath(String aPath) throws IOException
{
Logger.LOG(Logger.EJavaFile, Logger.EInfo,
"--> FileUtility.getCanonicalPath() Path: " + aPath);
char separator;
String tmpPath = aPath;
if (tmpPath.endsWith("/") || tmpPath.endsWith("\\"))
{
tmpPath = aPath.substring(0, aPath.length() - 1);
}
// Find separator and check to see if the same separator is used
// everywhere.
if (tmpPath.indexOf("/") != -1)
{
// Store the separator used.
separator = '/';
// In case any other kind of separator is used in the path
if (tmpPath.indexOf("\\") != -1)
{
throw new IllegalArgumentException("Invalid path separator: "
+ aPath);
}
}
else if (tmpPath.indexOf("\\") != -1)
{
separator = '\\';
if (tmpPath.indexOf("/") != -1)
{
throw new IllegalArgumentException("Invalid path separator: "
+ aPath);
}
}
else
{
// no separtor present in the input, return as it is
return tmpPath;
}
// Split the path based on the separator used.
String[] pathTokens = Tokenizer.split(tmpPath, "" + separator);
String initialPath = pathTokens[0];
if (pathTokens == null)
{
initialPath = "";
}
initialPath += separator;
// Resolves in case path starts with "." or ".." or "/" or "\\"
String path = _getRealPath(initialPath);
int count = 1;
String sub = null;
while (count < pathTokens.length)
{
sub = pathTokens[count];
count++;
if (sub != null)
{
// null implies that path was sumething like //a, which must be
// considered as /a. Hence we ignore and move on to the nex
// token.
if (sub.equals("."))
{
// We need to stay in the current working directory.
continue;
}
else if (sub.equals(".."))
{
// Substring the main one
if (path.indexOf(separator) == path.lastIndexOf(separator))
{
// We are already at the root, we cannot go further back
continue;
}
path = path.substring(0, path.lastIndexOf(separator, path
.length() - 2));
}
else
{
if (!path.endsWith("" + separator))
{
path += separator;
}
// Just append the thing. It is some string.
path += sub;
}
// Add the separator in the end.
if (count != pathTokens.length)
{
path += separator;
}
// In case there are any symbolic links, resolve them
path = _getRealPath(path);
}
}
// In case of symbolic paths, resolve it.
String toReturn = _getRealPath(path);
Logger.LOG(Logger.EJavaFile, Logger.EInfo,
"<-- FileUtility.getCanonicalPath(): " + toReturn);
return toReturn;
}
/**
* Get file Content ID. Only DRM protected files have content Id.
*
* @param full
* path to file.
* @return Content ID. Null if cannot be read or does not exists.
*/
public static String getContentId(String aPath)
{
return FilePlatformSpecifics.getContentId(aPath);
}
/**
* Checks to see if the Stream Handler instance is already present in the
* object. If it is not present, a new instance is created.
*
*/
private void createStreamHandler()
{
if (null == iStreamHandler)
{
String name = iTarget.getFullPath();
if (FileDRMContentHandler.isDRMProtectedFile(name))
{
Logger.LOG(Logger.EJavaFile, Logger.EInfo,
"FileUtility.checkStreamHandler(): "
+ "Choosing DRM content handler");
iStreamHandler = new FileDRMContentHandler(name, iDrmIntent,
iExecuteIntent);
}
else
{
Logger.LOG(Logger.EJavaFile, Logger.EInfo,
"FileUtility.checkStreamHandler(): "
+ "Choosing normal stream handler");
iStreamHandler = new FileStreamHandler(name);
}
}
}
/**
* Open and return an input stream for a connection. The connection's
* iTarget must already exist and be accessible for the input stream to be
* created.
*
* @return An open input stream
* @throws IOException
* if an I/O error occurs, if the method is invoked on a
* directory, if the connection's iTarget does not yet exist, or
* the connection's iTarget is not accessible.
*/
public InputStream openInputStream() throws IOException
{
if (!exists())
{
throw new IOException(FileUtilityErrorStrings.TARGET_DOES_NOT_EXIST
+ ": " + iTarget.getFullPath());
}
if (isDirectory())
{
throw new IOException(
FileUtilityErrorStrings.TARGET_POINTS_TO_DIRECTORY + ": "
+ iTarget.getFullPath());
}
createStreamHandler();
// Throws IOException if opening a file in the specified mode failed.
iStreamHandler.openFileForReading();
return iStreamHandler.openInputStream();
}
/**
* Open and return a data input stream for a connection. The connection's
* iTarget must already exist and be accessible for the input stream to be
* created.
*
* @return An open input stream
* @throws IOException
* If an I/O error occurs, if the method is invoked on a
* directory, if the connection's iTarget does not yet exist, or
* the connection's iTarget is not accessible.
*/
public DataInputStream openDataInputStream() throws IOException
{
if (!exists())
{
throw new IOException(FileUtilityErrorStrings.TARGET_DOES_NOT_EXIST
+ ": " + iTarget.getFullPath());
}
if (isDirectory())
{
throw new IOException(
FileUtilityErrorStrings.TARGET_POINTS_TO_DIRECTORY + ": "
+ iTarget.getFullPath());
}
createStreamHandler();
// Throws IOException if opening a file in the specified mode failed.
iStreamHandler.openFileForReading();
return iStreamHandler.openDataInputStream();
}
/**
* Open and return an output stream for a connection. The output stream is
* positioned at the start of the file. Writing data to the output stream
* overwrites the contents of the files (i.e. does not insert data). Writing
* data to output streams beyond the current end of file automatically
* extends the file size. The connection's iTarget must already exist and be
* accessible for the output stream to be created. openOutputStream(long)
* should be used to position an output stream to a different position in
* the file.
* <p>
* Changes made to a file through an output stream may not be immediately
* made to the actual file residing on the file system because platform and
* implementation specific use of caching and buffering of the data. Stream
* contents and file length extensions are not necessarily visible outside
* of the application immediately unless flush() is called on the stream.
* The returned output stream is automatically and synchronously flushed
* when it is closed.
*
* @return An open output stream
* @throws IOException
* If an I/O error occurs, if the method is invoked on a
* directory, the file does not yet exist, or the connection's
* iTarget is not accessible.
*/
public OutputStream openOutputStream() throws IOException
{
if (!exists())
{
throw new IOException(FileUtilityErrorStrings.TARGET_DOES_NOT_EXIST
+ ": " + iTarget.getFullPath());
}
if (isDirectory())
{
throw new IOException(
FileUtilityErrorStrings.TARGET_POINTS_TO_DIRECTORY + ": "
+ iTarget.getFullPath());
}
createStreamHandler();
iStreamHandler.openFileForWriting(0);
return iStreamHandler.openOutputStream();
}
/**
* Open and return a data output stream for a connection. The output stream
* is positioned at the start of the file. Writing data to the output stream
* overwrites the contents of the files (i.e. does not insert data). Writing
* data to output streams beyond the current end of file automatically
* extends the file size. The connection's iTarget must already exist and be
* accessible for the output stream to be created. openOutputStream(long)
* should be used to position an output stream to a different position in
* the file.
* <p>
* Changes made to a file through an output stream may not be immediately
* made to the actual file residing on the file system because platform and
* implementation specific use of caching and buffering of the data. Stream
* contents and file length extensions are not necessarily visible outside
* of the application immediately unless flush() is called on the stream.
* The returned output stream is automatically and synchronously flushed
* when it is closed.
*
* @return An open output stream
* @throws IOException
* If an I/O error occurs, if the method is invoked on a
* directory, the file does not yet exist, or the connection's
* iTarget is not accessible.
*/
public DataOutputStream openDataOutputStream() throws IOException
{
if (!exists())
{
throw new IOException(FileUtilityErrorStrings.TARGET_DOES_NOT_EXIST
+ ": " + iTarget.getFullPath());
}
if (isDirectory())
{
throw new IOException(
FileUtilityErrorStrings.TARGET_POINTS_TO_DIRECTORY + ": "
+ iTarget.getFullPath());
}
createStreamHandler();
iStreamHandler.openFileForWriting(0);
return iStreamHandler.openDataOutputStream();
}
/**
* This method opens an output stream and positions it at the indicated byte
* offset in the file. Data written to the returned output stream at that
* position overwrites any existing data until EOF is reached, and then
* additional data is appended. The connection's iTarget must already exist
* and be accessible for the output stream to be created.
* <p>
* Changes made to a file through an output stream may not be immediately
* made to the actual file residing on the file system because platform and
* implementation specific use of caching and buffering of the data. Stream
* contents and file length extensions are not necessarily visible outside
* of the application immediately unless flush() is called on the stream.
* The returned output stream is automatically and synchronously flushed
* when it is closed.
*
* @param aByteOffset
* number of bytes to skip over from the beginning of the file
* when positioning the start of the OutputStream. If the
* provided offset is larger than or equal to the current file
* size, the OutputStream is positioned at the current end of the
* file for appending.
* @return an open OutputStream positioned at the byte offset in the file,
* or the end of the file if the offset is greater than the size of
* the file.
* @throws IOException
* If an I/O error occurs, if the method is invoked on a
* directory, the file does not yet exist, or the connection's
* iTarget is not accessible.
*/
public OutputStream openOutputStream(long aByteOffset) throws IOException
{
if (aByteOffset < 0)
{
throw new IllegalArgumentException();
}
if (!exists())
{
throw new IOException(FileUtilityErrorStrings.TARGET_DOES_NOT_EXIST
+ ": " + iTarget.getFullPath());
}
if (isDirectory())
{
throw new IOException(
FileUtilityErrorStrings.TARGET_POINTS_TO_DIRECTORY + ": "
+ iTarget.getFullPath());
}
createStreamHandler();
iStreamHandler.openFileForWriting(aByteOffset);
return iStreamHandler.openOutputStream();
}
/**
* Checks to see if current FileUtility is pointing to a File.
*
* @return true if the current iTarget is a file. false in case the iTarget
* is not a file or is not accessible.
*/
public boolean isFile()
{
return _isFile(iTarget.getFullPath());
}
/**
* Checks to see if the current FileUtility is pointing to a Directory.
*
* @return true if the current iTarget is a directory. false in case the
* iTarget is not a directory or is not accessbile.
*/
public boolean isDirectory()
{
return _isDirectory(iTarget.getFullPath());
}
/**
* Checks to see if the current FileUtility iTarget exists.
*
* @return true if the current iTarget exists. false in case the iTarget did
* not exist or there was a fault while reading or accessing the
* file.
*/
public boolean exists()
{
return _exists(iTarget.getFullPath());
}
/**
* Checks to see if the current FileUtility iTarget can be read from the
* current application.
*
* @return true if read access is allowed to the file. false if read access
* is not allowed or if there was error reading the file.
*/
public boolean canRead()
{
if (!exists())
{
return false;
}
return _canRead(iTarget.getFullPath());
}
/**
* Checks to see if the current FileUtility iTarget can be written to from
* the current application.
*
* @return true if write access is allowed to the file. false if write
* access is not allowed or if there was error reading the file.
*/
public boolean canWrite()
{
if (!exists())
{
return false;
}
return _canWrite(iTarget.getFullPath());
}
/**
* Tests whether the file named by pathname is a hidden file.
* <p>
* The exact definition of hidden is system-dependent. On UNIX systems, a
* file is considered to be hidden if its name begins with a period
* character ('.'). On Microsoft Windows systems, a file is considered to be
* hidden if it has been marked as such in the filesystem.
* <p>
* NOTE: There is no method provided to hide a file/directory.
*
* @return true if the file exists, is accessible, and is hidden, otherwise
* false.
*
*/
public boolean isHidden(String aPath)
{
return _isHidden(aPath);
}
/**
* Tests whether the file named by pathname is a hidden file.
* <p>
* The exact definition of hidden is system-dependent. On UNIX systems, a
* file is considered to be hidden if its name begins with a period
* character ('.'). On Microsoft Windows systems, a file is considered to be
* hidden if it has been marked as such in the filesystem.
* <p>
* NOTE: There is no method provided to hide a file/directory.
*
* @return true if the file exists, is accessible, and is hidden, otherwise
* false.
*/
public boolean isHidden()
{
if (!exists())
{
return false;
}
return _isHidden(iTarget.getFullPath());
}
/**
* Sets the file or directory readable attribute to the indicated value. The
* readable attribute for the file on the actual file system is set
* immediately upon invocation of this method.
*
* @param aReadable
* The new state of the readable flag of the selected file.
* @throws IOException
* if the connection's iTarget does not exist or is not
* accessible.
*/
public void setReadable(boolean aReadable) throws IOException
{
if (!exists())
{
throw new IOException(FileUtilityErrorStrings.TARGET_DOES_NOT_EXIST
+ ": " + iTarget.getFullPath());
}
if (canRead() == aReadable)
{
return;
}
_setReadable(iTarget.getFullPath(), aReadable);
}
/**
* Sets the selected file or directory writable attribute to the indicated
* value. The writable attribute for the file on the actual file system is
* set immediately upon invocation of the method.
*
* @param aWritable
* The new state of the writable flag of the selected file.
* @throws IOException
* if the connection's iTarget does not exist or is not
* accessible.
*/
public void setWritable(boolean aWritable) throws IOException
{
if (!exists())
{
throw new IOException(FileUtilityErrorStrings.TARGET_DOES_NOT_EXIST
+ ": " + iTarget.getFullPath());
}
if (canWrite() == aWritable)
{
return;
}
if (iStreamHandler != null)
{
iStreamHandler.closeInputStreams();
// close temporarily
iStreamHandler.closeFileStream();
}
_setWritable(iTarget.getFullPath(), aWritable);
}
/**
* Sets the hidden attribute of the selected file to the value provided. The
* attribute is applied to the file on the actual file system immediately
* upon invocation of this method if the file system and platform support
* it.
* <p>
* If the file system doesn't support a hidden attribute, this method is
* ignored and isHidden() always returns false. Since the exact definition
* of hidden is system-dependent, this method only works on file systems
* that support a settable file attribute.
* <p>
* For example, on Win32 and FAT file systems, a file may be considered
* hidden if it has been marked as such in the file's attributes; therefore
* this method is applicable.<br/>
* However on UNIX systems a file may be considered to be hidden if its name
* begins with a period character ('.'). In the UNIX case, this method may
* be ignored and the method to make a file hidden may be the rename()
* method.
*
* @param aHidden
* The new state of the hidden flag of the selected file.
* @throws IOException
* if the connection's iTarget does not exist or is not
* accessible.
*/
public void setHidden(boolean aHidden) throws IOException
{
if (!exists())
{
throw new IOException(FileUtilityErrorStrings.TARGET_DOES_NOT_EXIST
+ ": " + iTarget.getFullPath());
}
if (isHidden() == aHidden)
{
return;
}
// We need to close the streams in order to change the hidden status
// else it will fail. In Linux, it might be so that setHidden might lead
// to rename. So, we close the Files so that it can be renamed.
// The offsets remain the same.
if (iStreamHandler != null)
{
iStreamHandler.closeInputStreams();
iStreamHandler.closeFileStream();
}
// SetHidden is extremely platform specific behaviour.
FilePlatformSpecifics.setHidden(this, aHidden);
}
/**
* Retrieves the size of the file.
*
* @return size of file in bytes or -1 if the file did not exist
* @throws IOException
* in case there was any error retrieving the file size.
*/
public long fileSize() throws IOException
{
if (!_exists(iTarget.getFullPath()))
{
return -1;
}
if (!isFile())
{
throw new IOException(
FileUtilityErrorStrings.TARGET_POINTS_TO_DIRECTORY + ": "
+ iTarget.getFullPath());
}
return _fileSize(iTarget.getFullPath());
}
/**
* Determines the size in bytes on a file system of all of the files that
* are contained in a directory.
*
* @param aIncludeSubDirs
* specifies if dir size has to be taken recursively
* @return The size in bytes occupied by the files included in the
* directory, \ or -1 if the directory does not exist or is not
* accessible.
*
* @throws IOException
* if the method is invoked on a file.
*
* @throws SecurityException
* if the security of the application does not have read access
* to the file.
*/
public long directorySize(boolean aIncludeSubDirs) throws IOException
{
if (!_exists(iTarget.getFullPath()))
{
return -1;
}
if (!isDirectory())
{
throw new IOException(FileUtilityErrorStrings.TARGET_POINTS_TO_FILE
+ ": " + iTarget.getFullPath());
}
return _dirSize(iTarget.getFullPath(), aIncludeSubDirs);
}
/**
* Determines the total size of the file system the iTarget resides on.
*
* @return The total size of the file system in bytes, or -1 if the file
* system is not accessible.
*/
public long totalSize()
{
return _totalSize(iTarget.getFullPath());
}
/**
* Determines the free memory that is available on the file system the file
* or directory resides on. This may only be an estimate and may vary based
* on platform-specific file system blocking and metadata information.
*
* @return The available size in bytes on a file system, or -1 if the file
* system is not accessible.
*/
public long availableSize()
{
return _availableSize(iTarget.getFullPath());
}
/**
* Determines the used memory of a file system the connection's iTarget
* resides on. This may only be an estimate and may vary based on
* platform-specific file system blocking and metadata information.
*
* @return The used size of bytes on a file system, or -1 if the file system
* is not accessible.
*/
public long usedSize()
{
return _usedSize(iTarget.getFullPath());
}
/**
* Returns the time that the FileUtility currently points to was last
* modified.
*
* @return A long value representing the time the file was last modified,
* measured in milliseconds, 0L if an I/O error occurs. If
* modification date is not supported by the underlying platform
* and/or file system, then 0L is also returned. If the connection's
* iTarget does not exist or is not accessible, 0L is returned.
*/
public long lastModified()
{
long value = _lastModified(iTarget.getFullPath());
// Time got is not got in milliseconds, so multiplying with 1000.
return value * 1000;
}
/**
* Fetches the name of the iTarget currently pointed to by FileUtility. If
* the iTarget is a file, the result is of the form <file.extention> else if
* it is a directory it has a trailing "/" of the form <directory/>
*
* @return name of the iTarget currently pointed to.
*/
public String getName()
{
String name = iTarget.getName();
return name;
}
/**
* Fetches the path to the iTarget currently pointed to by FileUtility.
* Return value is of the form /<root>/<directory>/
*
* @return path to the iTarget currently pointed to.
*/
public String getPath()
{
String name = iTarget.getPath();
return name;
}
/**
* Returns FileUtility object that points to the parent of the current
* iTarget.
*
* @return The parent directory named by this FileUtility, or null if this
* pathname does not name a parent
*/
public FileUtility getParentFile()
{
String name = iTarget.getPath();
if (null == name)
return null;
return new FileUtility(name);
}
/**
* Returns the absolute path traced from the root of the file system.
*
* @return the absolute path of the file
*/
public String getAbsolutePath()
{
return iTarget.getFullPath();
}
/**
* Returns the full file URL including the scheme, host, and path from where
* the file or directory specified in the Connector.open() method is opened.
* The string returned is in an escaped ASCII format as defined by RFC 2396.
* The resulting String looks as follows:
*
* <pre>
* file://<host>/<root>/<directory>/<filename>
* </pre>
*
* @return The URL of a file or directory in the format specified above.
*/
public String getURL()
{
return iTarget.getUrl();
}
/**
* Creates a file corresponding to the file string provided constructor of
* this FileUtility. The file is created immediately on the actual file
* system upon invocation of this method. Files are created with zero length
* and data can be put into the file through output streams opened on the
* file. This method does not create any directories specified in the file's
* path.
*
* @return true if the file did not exist and was successfully created;
* false if the file already existed.
* @throws IOException
* in case an error occured; or if the URL/Path given during
* construction had a trailing "/"(or "\\") to indicate that it
* is a directory.
* @throws SecurityException
* in case the access was denied to create the file
*/
public boolean createNewFile() throws IOException, SecurityException
{
String toCreate = iTarget.getFullPath();
// This is used to create files. If the iTarget specified is that of a
// directory, it is not created.
if (toCreate.endsWith(FileURL.S60_FILE_SEPARATOR)
|| toCreate.endsWith(FileURL.LINUX_FILE_SEPARATOR))
{
throw new IOException(
FileUtilityErrorStrings.TARGET_POINTS_TO_DIRECTORY + ": "
+ iTarget.getFullPath());
}
// If any exception occured, the native call must throw IOException
// In case it already existed, it will return false; true if successful.
return _createNewFile(toCreate);
}
/**
* Creates the directory named by this pathname. Directories in the
* specified path are not recursively created and must be explicitly created
* before sub directories can be created.
*
* @return true if and only if the directory was created; false if the
* directory already existed.
* @throws IOException
* in case an error occurred; or if the URL/Path given during
* construction did not have trailing "/"(or "\\") to indicating
* that it is not supposed to be a directory.
* @throws SecurityException
* in case the access was denied to create the directory
*/
public boolean mkdir() throws IOException, SecurityException
{
String toCreate = iTarget.getFullPath();
// OpenC does not recognise already existing directories
// So, we do it ourselves.
if (exists())
{
return false;
}
// This is used to create directories. If the iTarget specified is that
// of a file, it is not created.
if ((toCreate.endsWith(FileURL.S60_FILE_SEPARATOR) || toCreate
.endsWith(FileURL.LINUX_FILE_SEPARATOR)))
{
// Must ignore the separator
// Remove the trailing slash and pass it to native side.
toCreate = toCreate.substring(0, toCreate.length() - 1);
}
return _createNewDirectory(toCreate);
}
/**
* Creates the directory named by this pathname, including any necessary but
* nonexistent parent directories. Note that if this operation fails it may
* have succeeded in creating some of the necessary parent directories.
*
* @return true if and only if the directory was created, along with all
* necessary parent directories; false otherwise
* @throws IOException
* in case an error occurred
* @throws SecurityException
*/
public boolean mkdirs() throws IOException, SecurityException
{
String fullPath = iTarget.getFullPath();
String separator = "/";
if (fullPath.indexOf("\\") != -1)
{
separator = "\\";
}
String[] pathTokens = Tokenizer.split(fullPath, separator);
String progressivePath = "";
for (int i = 1; i < pathTokens.length - 1; i++)
{
if (pathTokens[i].equals(""))
{
throw new IllegalArgumentException();
}
// Check rename parameters checks for validity of the folders
// within the path
checkRenameParameters(pathTokens[i]);
}
for (int dirs = 0; dirs < pathTokens.length; dirs++)
{
if (pathTokens[dirs].equals(""))
{
progressivePath += separator;
continue;
}
progressivePath += pathTokens[dirs];
if (!_exists(progressivePath))
{
// Create the directory.
if (!_createNewDirectory(progressivePath))
{
// Could not create a directory in the path
return false;
}
}
progressivePath += separator;
}
return true;
}
/**
* Deletes the file or directory denoted by this pathname. If this pathname
* denotes a directory, then the directory must be empty in order to be
* deleted.
* <p>
* All open input and output streams are automatically flushed and closed.
* Attempts to further use those streams result in an IOException. The
* FileUtility instance object remains available for use.
*
* @return true if and only if the file or directory is successfully
* deleted; false otherwise
* @throws SecurityException
* if access was denied to the file/directory
*/
public boolean delete() throws SecurityException
{
// Close input and output Streams if created.
// Found in StreamConnectionBase
if (!canWrite())
{
return false;
}
if (iStreamHandler != null)
{
iStreamHandler.closeInputStreams();
iStreamHandler.closeOutputStreams();
}
return _delete(iTarget.getFullPath());
}
/**
* Deletes the file or directory denoted by this pathname. If this pathname
* denotes a directory, then the directory must be empty in order to be
* deleted. Deletes the file or directory even if it is marked as read-only.
* <p>
* All open input and output streams are automatically flushed and closed.
* Attempts to further use those streams result in an IOException. The
* FileUtility instance object remains available for use.
*
* @return true if and only if the file or directory is successfully
* deleted; false otherwise
* @throws SecurityException
* if access was denied to the file/directory
*/
public boolean forceDelete() throws SecurityException
{
// Close input and output Streams if created.
// Found in StreamConnectionBase
if (iStreamHandler != null)
{
iStreamHandler.closeInputStreams();
iStreamHandler.closeOutputStreams();
}
return _delete(iTarget.getFullPath());
}
/**
* Renames the selected file or directory to a new name in the same
* directory. The file or directory is renamed immediately on the actual
* file system upon invocation of this method. No file or directory by the
* original name exists after this method call.
* <p>
* All previously open input and output streams are automatically flushed
* and closed. Attempts to further use those streams result in an
* IOException. The FileUtility instance object remains open and available
* for use, referring now to the file or directory by its new name.
*
* @param aNewName
* new name to which the current iTarget has to be renamed
* @return true if rename succeeded, false otherwise
* @throws IOException
* if the connection's iTarget does not exist, the connection's
* iTarget is not accessible, a file or directory already exists
* by the newName, or newName is an invalid filename for the
* platform (e.g. contains characters invalid in a filename on
* the platform)
* @throws SecurityException
* if access/permission was denied to rename file
* @throws IllegalArgumentException
* if newName contains any path specification.
*/
public boolean rename(String aNewName) throws IOException,
SecurityException
{
String toRename = aNewName.trim();
toRename = FileUTF8Handler.decode(toRename);
if (toRename.endsWith("\n"))
{
toRename = toRename.substring(0, toRename.length() - 1);
}
checkRenameParameters(toRename);
// Check if the cuurent iTarget exists
if (!exists())
{
throw new IOException(FileUtilityErrorStrings.TARGET_DOES_NOT_EXIST
+ ": " + iTarget.getFullPath());
}
// Checks if the toRename is intended for Directory or File.
if ((toRename.endsWith(FileURL.S60_FILE_SEPARATOR) || toRename
.endsWith(FileURL.LINUX_FILE_SEPARATOR)))
{
// Rename to a directory
// If the existing iTarget is a file, we cant do it.
if (isFile())
{
throw new IllegalArgumentException(
FileUtilityErrorStrings.TARGET_POINTS_TO_FILE + ": "
+ iTarget.getFullPath());
}
}
String renameTo = iTarget.getPath() + toRename;
FileURL newUrl = new FileURL(renameTo);
// OpenC renames even if there is another file/directory with
// the same name as the toRename. So, we need to check it ourselves.
if (_exists(renameTo))
{
throw new IOException();
}
if (iStreamHandler != null)
{
// Close all input and output streams if created now
iStreamHandler.closeInputStreams();
iStreamHandler.closeOutputStreams();
}
if (_renameFile(iTarget.getFullPath(), newUrl.getFullPath()))
{
// If rename succeeded, we will be pointing to a new iTarget.
// Assign new URL to member.
iTarget = newUrl;
// Since rename succeeded, we dispose the native peer and create
// create a new peer pointing to the new file.
if (iStreamHandler != null)
{
iStreamHandler = new FileStreamHandler(iTarget.getFullPath());
}
return true;
}
return false;
}
/**
* Renames the iTarget to new file. Similar to rename, but allows us to
* rename files to different paths in the file system. Allows for faster
* move within a file system.
*
* @param aNewName
* new path to which it has to be moved. Note that the newName
* should be absolute path.
* @return true in case rename was successful, false otherwise
* @throws IOException
* in case some unexpected error occured.
*/
public boolean renameTo(String aNewName) throws IOException
{
String renameTo = aNewName.trim();
if (renameTo.endsWith("\n"))
{
renameTo = renameTo.substring(0, renameTo.length() - 1);
}
// Check if the current iTarget exists
if (!exists())
{
throw new IOException(FileUtilityErrorStrings.TARGET_DOES_NOT_EXIST
+ ": " + iTarget.getFullPath());
}
FileURL newUrl = new FileURL(renameTo);
// // OpenC renames even if there is another file/directory with
// // the same name as the toRename. So, we need to check it ourselves.
// if (_exists(renameTo))
// {
// throw new IOException();
// }
String separator = iTarget.getSeparatorUsed();
FileUtility temp = new FileUtility(aNewName);
if (renameTo.indexOf(separator) == -1)
{
throw new IllegalArgumentException("Invalid parameter");
}
// Make sure paths are created
FileUtility parentPath = temp.getParentFile();
if (!parentPath.exists())
{
parentPath.mkdirs();
}
parentPath = null;
if (iStreamHandler != null)
{
// Close all input and output streams if created now
iStreamHandler.closeInputStreams();
iStreamHandler.closeOutputStreams();
}
if (_renameFile(iTarget.getFullPath(), newUrl.getFullPath()))
{
// If rename succeeded, we will be pointing to a new iTarget.
// Assign new URL to member.
iTarget = newUrl;
// Since rename succeeded, we dispose the native peer and create
// create a new peer pointing to the new file.
if (iStreamHandler != null)
{
iStreamHandler = new FileStreamHandler(iTarget.getFullPath());
}
return true;
}
return false;
}
public String[] listFileArray(boolean aIncludeHidden) throws IOException
{
if (!_exists(iTarget.getFullPath()))
{
throw new IOException(FileUtilityErrorStrings.TARGET_DOES_NOT_EXIST
+ ": " + iTarget.getFullPath());
}
if (isFile())
{
throw new IOException(FileUtilityErrorStrings.TARGET_POINTS_TO_FILE
+ ": " + iTarget.getFullPath());
}
// Simply lists all the contents of the file.
String fileListString = "";
// Gives full path with "/" in the end
String path = iTarget.getFullPath();
if (path.endsWith("/") || path.endsWith("\\"))
{
path = path.substring(0, path.length() - 1);
}
path = path.replace('\\', '/');
fileListString = _listDirContents(path, aIncludeHidden);
// Split the string into separate files
String[] splitStrings = Tokenizer.split(fileListString, "*");
String[] trimmed = new String[splitStrings.length - 1];
for (int index = 0; index < splitStrings.length - 1; index++)
{
trimmed[index] = splitStrings[index];
}
return trimmed;
}
/**
* Gets a filtered list of files and directories contained in a directory
*
* @param filter
* String against which all files and directories are matched for
* retrieval. includeHidden: boolean indicating whether files
* marked as hidden should be included or not in the list of
* files and directories returned.
*
* @return Vector of strings, denoting the files and directories in the
* directory
*
* @throws IOException
* if invoked on a file, the directory does not exist, the
* directory is not accessible, or an I/O error occurs.
*
* @throws SecurityException
* if the security of the application does not have read access
* for the connection's iTarget.
*
* @throws IllegalModeException
* If application does have read access to the file but has
* opened the connection in Connector.WRITE mode.
* @throws ConnectionClosedException
* If Connection is closed.
*/
public Vector listFiles(String aFilter, boolean aIncludeHidden)
throws IOException
{
String filter = trimFilter(aFilter);
checkFilter(filter);
if (!_exists(iTarget.getFullPath()))
{
throw new IOException(FileUtilityErrorStrings.TARGET_DOES_NOT_EXIST
+ ": " + iTarget.getFullPath());
}
if (isFile())
{
throw new IOException(FileUtilityErrorStrings.TARGET_POINTS_TO_FILE
+ ": " + iTarget.getFullPath());
}
// need to make checks still
Vector fileList = new Vector();
String[] splitStrings = listFileArray(aIncludeHidden);
boolean matchFlag = false;
// result from native call will contain all files. Need to filter it now
for (int i = 0; i < splitStrings.length; i++)
{
splitStrings[i] = splitStrings[i].trim();
if (splitStrings[i].equals(""))
continue;
matchFlag = false;
// Check if name matches the string
matchFlag = matchString(filter.toLowerCase(), splitStrings[i]
.toLowerCase());
if (splitStrings[i].equals("./") || splitStrings[i].equals("../"))
{
matchFlag = false;
}
if (iTarget.getSeparatorUsed() != "/")
{
splitStrings[i] = splitStrings[i].replace('/', '\\');
}
if (matchFlag)
{
fileList.addElement(splitStrings[i]);
}
}
return fileList;
}
/**
* Gets a filtered list of files and directories contained in a directory
*
* @param aFilter
* String against which all files and directories are matched for
* retrieval. includeHidden: boolean indicating whether files
* marked as hidden should be included or not in the list of
* files and directories returned.
*
* @return Enumeration of strings, denoting the files and directories in the
* directory
*
* @throws IOException
* if invoked on a file, the directory does not exist, the
* directory is not accessible, or an I/O error occurs.
* SecurityException: if the security of the application does
* not have read access for the connection's iTarget.
* IllegalModeException: If application does have read access to
* the file but has opened the connection in Connector.WRITE
* mode. ConnectionClosedException: If Connection is closed.
*/
public Enumeration list(String aFilter, boolean aIncludeHidden)
throws IOException
{
Vector fileList = listFiles(aFilter, aIncludeHidden);
return fileList.elements();
}
/**
* Gets a list of all visible files and directories contained in a
* directory. The directory is the connection's iTarget as specified in
* constructor.
* <p>
* Any hidden files and directories in the directory are not included in the
* returned list. Any current directory indication (".") and any parent
* directory indication ("..") is not included in the list of files and
* directories returned.
*
* @return An Enumeration of strings, denoting the files and directories in
* the directory. The string returned contain only the file or
* directory name and does not contain any path prefix (to get a
* complete path for each file or directory, prepend getPath()).
* Directories are denoted with a trailing slash "/" in their
* returned name. The Enumeration has zero length if the directory
* is empty.
* @throws IOException
*/
public Enumeration list() throws IOException
{
return list("", false);
}
/**
* Gets a list of all visible files and directories contained in a
* directory. The directory is the connection's iTarget as specified in
* constructor.
* <p>
* Any hidden files and directories in the directory are not included in the
* returned list. Any current directory indication (".") and any parent
* directory indication ("..") is not included in the list of files and
* directories returned.
*
* @return An list of FileUtility objects, denoting the files and
* directories in the directory.
* @throws IOException
*/
public FileUtility[] listFiles() throws IOException
{
Vector fileList = listFiles("", false);
FileUtility[] files = new FileUtility[fileList.size()];
for (int i = 0; i < fileList.size(); i++)
{
String element = iTarget.getFullPath();
if (!element.endsWith(iTarget.getSeparatorUsed()))
{
element += iTarget.getSeparatorUsed();
}
files[i] = new FileUtility(element + fileList.elementAt(i));
}
return files;
}
/**
* Truncates the file, discarding all data from the given byte offset to the
* current end of the file
*
* @param aByteOffset
* Offset into the file from which truncation occurs.
*
* @throws java.io.IOException
* if invoked on a directory or the file does not exist or is
* not accessible.
* @throws SecurityException
* if the security of the application does not have write access
* for the connection's iTarget.
* @throws IllegalArgumentException
* if byteOffset is less than zero.
*/
public void truncate(long aByteOffset) throws java.io.IOException
{
if (aByteOffset < 0)
{
throw new IllegalArgumentException(
"Argument value cannot be negative");
}
if (!exists())
{
throw new IOException("File does not exist "
+ iTarget.getFullPath());
}
if (isDirectory())
{
throw new IOException("Connection is a directory "
+ iTarget.getFullPath());
}
if (aByteOffset > fileSize())
{
return;
}
_truncate(iTarget.getFullPath(), aByteOffset);
}
/**
* Disposes native resource.
*
*/
private synchronized void doFinalize()
{
if (iFinalizer == null)
{
return;
}
iFinalizer = null;
iStreamHandler = null;
}
public String toString()
{
return getAbsolutePath();
}
/** * ----------------------------- HELPERS ----------------------------- */
/**
* Checks for sanity of the name passed to rename method. It must not
* contain characters that are not allowed in file names. Also, it must not
* have any path separators in it. Will throw IllegalArgumentException if
* the name was found to be improper.
*
* @param aName
* name of file/directory to which the iTarget needs to be
* renamed
* @throws IOException
* in case it contains any of invalid characters.
*/
private static final void checkRenameParameters(String aName)
throws IOException
{
boolean result = true;
if ((aName.indexOf('*') != -1) || (aName.indexOf('\\') != -1)
|| (aName.indexOf('/') != -1 && !aName.endsWith("/"))
|| aName.endsWith("//"))
{
throw new IllegalArgumentException();
}
if ((aName.indexOf('?') != -1) || (aName.indexOf('<') != -1)
|| (aName.indexOf('<') != -1) || (aName.indexOf(':') != -1)
|| (aName.indexOf('|') != -1))
{
throw new IOException();
}
}
/**
* If the filter contains escaped characters, it unescapes them.
*
* @param aFilter
* filter string passed to list method
* @return new string with unescaped characters
*/
private static String trimFilter(String aFilter)
{
String filter;
// If the name contains escaped sequences, remove them: %20
filter = FileUTF8Handler.decode(aFilter);
filter = filter.trim();
return filter;
}
/**
* Checks to see if the filter given by the user is valid. Checks against
* special charaters that must not be in the filter string.
*
* @param aFilter
* parameter passed to list method.
* @throws IllegalArgumentException
* in case it contains a character that is not allowed to be in
* a filer.
*/
private static void checkFilter(String aFilter)
{
if ((aFilter.indexOf('?') != -1) || (aFilter.indexOf(":") != -1)
|| (aFilter.indexOf("/") != -1)
|| (aFilter.indexOf("\\") != -1)
|| (aFilter.indexOf("//") != -1)
|| (aFilter.indexOf("|") != -1) || (aFilter.indexOf("<") != -1)
|| (aFilter.indexOf(">") != -1))
{
throw new IllegalArgumentException();
}
}
/**
* Matches a given string with filter. Filter string can contain * as a wild
* card. Used in case of list. Where application might give a filter string
* to filter out contents of a directory.
* <p>
* Logic followed is this:
* <ol>
* <li>1. Filter can be of the form *a*b*c* (in its most tricky form.</li>
* <li>2. a, b, c can themselves be strings.</li>
* <li>3. First split the sting into tokens taking "*" as delimiter.</li>
* <li>4. Now check if the name parameter has a, b and c in the same
* sequence.</li>
* <li>5. Now, if 'a' occurs after 'b', and 'c' occurs after 'b', we can be
* sure that the name parameter already matches the filter.</li>
*
* @param aFilter
* filter string that will be used to check validity of name
* parameter
* @param aName
* name of the file/directory that will be compared against the
* filter
* @return true if the name matches the filter, false otherwise
*/
public static boolean matchString(String aFilter, String aName)
{
Logger.LOG(Logger.EJavaFile, Logger.EInfo,
"--> FileUtility.matchString(): " + " Filter: " + aFilter
+ " Name: " + aName);
String filter = aFilter;
filter = trimFilter(filter);
if (filter.equals("*"))
{
Logger.LOG(Logger.EJavaFile, Logger.EInfo,
"<-- FileUtility.matchString(): returns true");
return true;
}
// Since only "*" is used as wild card, we split the strings taking
// "*" as delimiter.
String[] tokens = Tokenizer.split(filter, "*");
int prevTokenEndIndex = 0;
boolean matchFlag = true;
prevTokenEndIndex = 0;
matchFlag = true;
int j = 0;
// Check if the name contains all the tokens in the filter string.
for (j = 0; j < tokens.length; j++)
{
if (tokens[j].equals(""))
{
// happens if filter starts and ends with "*"
continue;
}
// Check if all the tokens are present
int index = aName.indexOf(tokens[j], prevTokenEndIndex);
if (-1 != index)
{
if (index >= prevTokenEndIndex)
{
prevTokenEndIndex = aName.indexOf(tokens[j])
+ tokens[j].length();
matchFlag = true;
}
else
{
matchFlag = false;
break;
}
}
else
{
matchFlag = false;
break;
}
}
// We now need to check if the start and end of the name match that of
// the filter given. In case the filter does not start and end with "*",
// we must ensure that the name starts and ends with the same tokens as
// specified in the filter.
if (matchFlag) // We proceed only if all the tokens are present in name
{
if (!filter.startsWith("*"))
{
// IF the filter does not start with "*" then name should start
// with first token
if (!aName.startsWith(tokens[0]))
{
matchFlag = false;
}
}
if (!filter.endsWith("*"))
{
// IF the filter does not end with "*" then name should end
// with last token
if (!aName.endsWith(tokens[tokens.length - 1]))
{
matchFlag = false;
}
}
}
Logger.LOG(Logger.EJavaFile, Logger.EInfo,
"<-- FileUtility.matchString(): returns: " + matchFlag);
return matchFlag;
}
/** * ----------------------------- NATIVE ----------------------------- */
private static native boolean _exists(String path);
private static native String _getRealPath(String path) throws IOException;
private native long _availableSize(String path);
private native boolean _canRead(String name);
private native boolean _canWrite(String name);
private native boolean _createNewDirectory(String fileName)
throws IOException, SecurityException;
private native boolean _createNewFile(String fileName) throws IOException,
SecurityException;
private native boolean _delete(String fileName) throws SecurityException;
private native long _dirSize(String filePath, boolean includeSubDirs);
private native long _fileSize(String fileName) throws IOException;
private native boolean _isDirectory(String dirName);
private native boolean _isFile(String fileName);
private native boolean _isHidden(String name);
private native long _lastModified(String name);
private native String _listDirContents(String fullPath,
boolean includeHidden);
private native boolean _renameFile(String oldPath, String newPath)
throws IOException, SecurityException;
private native void _setReadable(String name, boolean readable)
throws IOException;
private native void _setWritable(String name, boolean writable)
throws IOException;
private native long _totalSize(String path);
private native void _truncate(String name, long offset) throws IOException;
private native long _usedSize(String path);
}