Example usage for java.io RandomAccessFile toString

Introduction

In this page you can find the example usage for java.io RandomAccessFile toString.

Prototype

public String toString() 

Source Link

Document

Returns a string representation of the object.

Usage

From source file:jag.sftp.VirtualFileSystem.java

/**
*
*
* @param path/*from www . java 2  s .c  om*/
* @param flags
* @param attrs
*
* @return
*
* @throws PermissionDeniedException
* @throws FileNotFoundException
* @throws IOException
*/
public byte[] openFile(String path, UnsignedInteger32 flags, FileAttributes attrs)
        throws PermissionDeniedException, FileNotFoundException, IOException {
    System.out.println(path);
    path = VirtualFileSystem.translateVFSPath(path);
    System.out.println(path);
    File f = new File(path);
    verifyPermissions(SshThread.getCurrentThreadUser(), path, "r");

    // Check if the file does not exist and process according to flags
    if (!f.exists()) {
        if ((flags.intValue() & NativeFileSystemProvider.OPEN_CREATE) == NativeFileSystemProvider.OPEN_CREATE) {
            // The file does not exist and the create flag is present so lets create it
            if (!f.createNewFile()) {
                throw new IOException(translateNFSPath(path) + " could not be created");
            }
        } else {
            // The file does not exist and no create flag present
            throw new FileNotFoundException(translateNFSPath(path) + " does not exist");
        }
    } else {
        if (((flags.intValue() & NativeFileSystemProvider.OPEN_CREATE) == NativeFileSystemProvider.OPEN_CREATE)
                && ((flags.intValue()
                        & NativeFileSystemProvider.OPEN_EXCLUSIVE) == NativeFileSystemProvider.OPEN_EXCLUSIVE)) {
            // The file exists but the EXCL flag is set which requires that the
            // file should not exist prior to creation, so throw a status exception
            throw new IOException(translateNFSPath(path) + " already exists");
        }
    }

    // The file now exists so open the file according to the flags yb building the relevant
    // flags for the RandomAccessFile class
    String mode = "r"
            + (((flags.intValue() & NativeFileSystemProvider.OPEN_WRITE) == NativeFileSystemProvider.OPEN_WRITE)
                    ? "ws"
                    : "");
    RandomAccessFile raf = new RandomAccessFile(f, mode);

    // Determine whether we need to truncate the file
    if (((flags.intValue() & NativeFileSystemProvider.OPEN_CREATE) == NativeFileSystemProvider.OPEN_CREATE)
            && ((flags.intValue()
                    & NativeFileSystemProvider.OPEN_TRUNCATE) == NativeFileSystemProvider.OPEN_TRUNCATE)) {
        // Set the length to zero
        raf.setLength(0);
    }

    // Record the open file
    openFiles.put(raf.toString(), new OpenFile(f, raf, flags));

    // Return the handle
    return raf.toString().getBytes("US-ASCII");
}

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From source file:com.sshtools.daemon.vfs.VirtualFileSystem.java

/**
 *
 *
 * @param path/*  w  w  w  .j a  v  a  2  s . c  o  m*/
 * @param flags
 * @param attrs
 *
 * @return
 *
 * @throws PermissionDeniedException
 * @throws FileNotFoundException
 * @throws IOException
 */
public byte[] openFile(String path, UnsignedInteger32 flags, FileAttributes attrs)
        throws PermissionDeniedException, FileNotFoundException, IOException {
    path = VirtualFileSystem.translateVFSPath(path);

    File f = new File(path);

    verifyPermissions(SshThread.getCurrentThreadUser(), path, "r");

    // Check if the file does not exist and process according to flags
    if (!f.exists()) {
        if ((flags.intValue() & NativeFileSystemProvider.OPEN_CREATE) == NativeFileSystemProvider.OPEN_CREATE) {
            // The file does not exist and the create flag is present so lets create it
            if (!f.createNewFile()) {
                throw new IOException(translateNFSPath(path) + " could not be created");
            }
        } else {
            // The file does not exist and no create flag present
            throw new FileNotFoundException(translateNFSPath(path) + " does not exist");
        }
    } else {
        if (((flags.intValue() & NativeFileSystemProvider.OPEN_CREATE) == NativeFileSystemProvider.OPEN_CREATE)
                && ((flags.intValue()
                        & NativeFileSystemProvider.OPEN_EXCLUSIVE) == NativeFileSystemProvider.OPEN_EXCLUSIVE)) {
            // The file exists but the EXCL flag is set which requires that the
            // file should not exist prior to creation, so throw a status exception
            throw new IOException(translateNFSPath(path) + " already exists");
        }
    }

    // The file now exists so open the file according to the flags yb building the relevant
    // flags for the RandomAccessFile class
    String mode = "r"
            + (((flags.intValue() & NativeFileSystemProvider.OPEN_WRITE) == NativeFileSystemProvider.OPEN_WRITE)
                    ? "ws"
                    : "");

    RandomAccessFile raf = new RandomAccessFile(f, mode);

    // Determine whether we need to truncate the file
    if (((flags.intValue() & NativeFileSystemProvider.OPEN_CREATE) == NativeFileSystemProvider.OPEN_CREATE)
            && ((flags.intValue()
                    & NativeFileSystemProvider.OPEN_TRUNCATE) == NativeFileSystemProvider.OPEN_TRUNCATE)) {
        // Set the length to zero
        raf.setLength(0);
    }

    // Record the open file
    openFiles.put(raf.toString(), new OpenFile(f, raf, flags));

    // Return the handle
    return raf.toString().getBytes("US-ASCII");
}

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