com.purpletech.util
Class IOUtils

java.lang.Object
  |
  +--com.purpletech.util.IOUtils

public class IOUtils

extends java.lang.Object

Miscellaneous file- and IO-related utility methods

Version:

$Id: IOUtils.java,v 1.6 2002/03/13 22:13:50 alex Exp $

Constructor Summary

IOUtils()

Method Summary

static void	chmod(java.io.File file, java.lang.String mode)
static void	copyFile(java.io.File source, java.io.File target) Copies one file to another.
static java.lang.String	fixPath(java.lang.String path) Removes "./" and "foo/../" and trailing "/" from pathname turns \ (backslash) into / (forward slash)
static java.util.Stack	getPathStack(java.lang.String path) Given a filesystem path with slashes, turns it into a stack, where each entry on the stack is a directory in the path.
static boolean	isDiff(java.io.File a, java.io.File b) compares the contents of two files
static boolean	isDiff(java.io.InputStream a, java.io.InputStream b) compares the contents of two streams
static java.lang.String	loadFile(java.io.File file) Deprecated. readFile
static java.util.Properties	loadProperties(java.io.File file)
static java.util.Properties	loadProperties(java.lang.String filename)
static void	lock(java.io.File f) Place a ".lock" file next to the given file.
static void	log(java.lang.String s) Prints a very simple log message to System.err
static java.lang.String	readFile(java.io.File file)
static java.lang.String	readReader(java.io.Reader input)
static java.lang.String	readStream(java.io.InputStream input)
static void	unlock(java.io.File f) Removes the ".lock" file
static void	writeFile(java.io.File dir, java.lang.String name, java.io.InputStream data) Write the input stream to the file as raw data
static void	writeProperties(java.io.File dir, java.lang.String name, java.util.Properties prop) Write the properties parameter to the file as raw data
static void	writeString(java.io.File file, java.lang.String data) Write the input string to the file as raw data
static void	writeString(java.io.File dir, java.lang.String name, java.lang.String data) Write the input string to the file as raw data

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

IOUtils

public IOUtils()

Method Detail

readFile

public static java.lang.String readFile(java.io.File file)
                                 throws java.io.IOException

Parameters:

file - file to read

java.io.IOException

readStream

public static java.lang.String readStream(java.io.InputStream input)
                                   throws java.io.IOException

Parameters:

input - stream to read

java.io.IOException

readReader

public static java.lang.String readReader(java.io.Reader input)
                                   throws java.io.IOException

Parameters:

input - stream to read

java.io.IOException

lock

public static void lock(java.io.File f)
                 throws java.io.IOException

Place a ".lock" file next to the given file. If one exists, block (polling every second) until the existing lock expires. If it's still there after 60 seconds, steal the lock.

java.io.IOException

See Also:

unlock(File)

unlock

public static void unlock(java.io.File f)
                   throws java.io.IOException

Removes the ".lock" file

java.io.IOException

See Also:

lock(File)

log

public static void log(java.lang.String s)

Prints a very simple log message to System.err

loadFile

public static java.lang.String loadFile(java.io.File file)
                                 throws java.io.IOException

Deprecated. readFile

OBSOLETE

java.io.IOException

loadProperties

public static java.util.Properties loadProperties(java.lang.String filename)
                                           throws java.io.IOException

java.io.IOException

loadProperties

public static java.util.Properties loadProperties(java.io.File file)
                                           throws java.io.IOException

java.io.IOException

writeFile

public static void writeFile(java.io.File dir,
                             java.lang.String name,
                             java.io.InputStream data)
                      throws java.io.IOException

Write the input stream to the file as raw data

Parameters:

dir - directory to put the file in

name - name of new file

data - the data to write in the file

java.io.IOException

writeString

public static void writeString(java.io.File dir,
                               java.lang.String name,
                               java.lang.String data)
                        throws java.io.IOException

Write the input string to the file as raw data

Parameters:

dir - directory to put the file in

name - name of new file

data - the data to write in the file

java.io.IOException

writeString

public static void writeString(java.io.File file,
                               java.lang.String data)
                        throws java.io.IOException

Write the input string to the file as raw data

Parameters:

data - the data to write in the file

java.io.IOException

writeProperties

public static void writeProperties(java.io.File dir,
                                   java.lang.String name,
                                   java.util.Properties prop)
                            throws java.io.IOException

Write the properties parameter to the file as raw data

Parameters:

dir - directory to put the file in

name - name of new file

java.io.IOException

fixPath

public static java.lang.String fixPath(java.lang.String path)
                                throws java.io.IOException

Removes "./" and "foo/../" and trailing "/" from pathname turns \ (backslash) into / (forward slash)

java.io.IOException

getPathStack

public static java.util.Stack getPathStack(java.lang.String path)
                                    throws java.io.IOException

Given a filesystem path with slashes, turns it into a stack, where each entry on the stack is a directory in the path. Deals properly with "./" and "../" (in the former case, it ignores it; in the latter case, it pops the previous entry) so all you're left with is valid directories. Does not deal with symlinks etc.

java.io.IOException

isDiff

public static boolean isDiff(java.io.File a,
                             java.io.File b)
                      throws java.io.IOException

compares the contents of two files

Returns:

true if the two files differ at any point

java.io.IOException

isDiff

public static boolean isDiff(java.io.InputStream a,
                             java.io.InputStream b)
                      throws java.io.IOException

compares the contents of two streams

Returns:

true if the two streams differ at any point

java.io.IOException

copyFile

public static void copyFile(java.io.File source,
                            java.io.File target)
                     throws java.io.IOException

Copies one file to another. NEW CODE -- NOT YET TESTED

java.io.IOException

chmod

public static void chmod(java.io.File file,
                         java.lang.String mode)
                  throws java.io.IOException

java.io.IOException