Collaboration diagram for org.jau.io.IOUtil:

Classes
class	ClassResources
	Helper compound associating a class instance and resource paths to be `resolved` at a later time. More...

class	StreamMonitor

Static Public Member Functions
static int	copyURLConn2File (final URLConnection conn, final File outFile) throws IOException
	Copy the specified URL resource to the specified output file.

static int	copyStream2File (final InputStream in, final File outFile, int totalNumBytes) throws IOException
	Copy the specified input stream to the specified output file.

static int	copyStream2Stream (final InputStream in, final OutputStream out, final int totalNumBytes) throws IOException
	Copy the specified input stream to the specified output stream.

static int	copyStream2Stream (final int bufferSize, final InputStream in, final OutputStream out, final int totalNumBytes) throws IOException
	Copy the specified input stream to the specified output stream.

static StringBuilder	appendCharStream (final StringBuilder sb, final Reader r) throws IOException

static byte[]	copyStream2ByteArray (InputStream stream) throws IOException
	Copy the specified input stream to a byte array, which is being returned.

static ByteBuffer	copyStream2ByteBuffer (final InputStream stream) throws IOException
	Copy the specified input stream to a NIO ByteBuffer w/ native byte order, which is being returned.

static ByteBuffer	copyStream2ByteBuffer (InputStream stream, int initialCapacity) throws IOException
	Copy the specified input stream to a NIO ByteBuffer w/ native byte order, which is being returned.

static String	slashify (final String path, final boolean startWithSlash, final boolean endWithSlash) throws URISyntaxException

static String	getFileSuffix (final File file)
	Returns the lowercase suffix of the given file name (the text after the last '.

static String	getFileSuffix (final String filename)
	Returns the lowercase suffix of the given file name (the text after the last '.

static FileOutputStream	getFileOutputStream (final File file, final boolean allowOverwrite) throws IOException

static String	getClassFileName (final String clazzBinName)

static URL	getClassURL (final String clazzBinName, final ClassLoader cl) throws IOException

static String	getBasename (String fname) throws URISyntaxException
	Returns the basename of the given fname w/o directory part.

static String	getDirname (String fname) throws URISyntaxException
	Returns unified '/' dirname including the last '/'.

static URLConnection	getResource (final String resourcePath, final ClassLoader classLoader, final Class<?> relContext)
	Locating a resource using `getResource(String, ClassLoader)`:

static URLConnection	getResource (final String resourcePath, final ClassLoader cl)
	Locating a resource using the ClassLoader's facilities and `org.jau.net.AssetURLContext`.

static String	getRelativeOf (final File baseLocation, final String relativeFile) throws URISyntaxException
	Generates a path for the 'relativeFile' relative to the 'baseLocation'.

static String	getParentOf (final String path) throws URISyntaxException

static String	cleanPathString (String path) throws URISyntaxException

static URLConnection	openURL (final URL url)
	Returns the connected URLConnection, or null if not url is not available.

static URLConnection	openURL (final URL url, final String dbgmsg)
	Returns the connected URLConnection, or null if not url is not available.

static boolean	testFile (final File file, final boolean shallBeDir, final boolean shallBeWritable)
	Test whether `file` exists and matches the given requirements.

static boolean	testDirExec (final File dir) throws SecurityException
	Returns true if the given `dir @endiliteral.`

static File	testDir (final File dir, final boolean create, final boolean executable) throws SecurityException
	Returns the directory `dir`, which is processed and tested as described below.

static File	getTempDir (final boolean executable) throws SecurityException, IOException
	Returns a platform independent writable directory for temporary files consisting of the platform's `temp-root` + `tmpSubDir`, e.g.

static File	createTempFile (final String prefix, final String suffix, final boolean executable) throws IllegalArgumentException, IOException, SecurityException
	Utilizing `File#createTempFile(String, String, File)` using `getTempDir(boolean)` as the directory parameter, ie.

static void	close (final Closeable stream, final boolean throwRuntimeException) throws RuntimeException

static IOException	close (final Closeable stream, final IOException[] saveOneIfFree, final PrintStream dumpExcess)
	Helper to simplify closing `Closeable`s.

static ArrayList< String >	filesOf (final List< String > paths, final List< Pattern > excludes, final List< Pattern > includes)
	Retrieve the list of all filenames traversing through given paths.

Static Public Attributes
static final boolean	DEBUG

static final String	tmpSubDir = "jau"
	Subdirectory within platform's temporary root directory where all JogAmp related temp files are being stored: `jau @endiliteral.`

static final Pattern	patternSpaceEnc = Pattern.compile("%20")

Detailed Description

Definition at line 61 of file IOUtil.java.

Member Function Documentation

◆ appendCharStream()

static StringBuilder org.jau.io.IOUtil.appendCharStream	(	final StringBuilder	sb,
		final Reader	r ) throws IOException

static

Definition at line 219 of file IOUtil.java.

◆ cleanPathString()

static String org.jau.io.IOUtil.cleanPathString ( String path ) throws URISyntaxException

static

Parameters

path	assuming a slashified path, either denoting a file or directory, either relative or absolute.

Returns: clean path string where ./ and ../ is resolved, while keeping a starting ../ at the beginning of a relative path.

Exceptions

URISyntaxException if path is empty or has no parent directory available while resolving ../

Definition at line 629 of file IOUtil.java.

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◆ close() [1/2]

static void org.jau.io.IOUtil.close	(	final Closeable	stream,
		final boolean	throwRuntimeException ) throws RuntimeException

static

Definition at line 1248 of file IOUtil.java.

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◆ close() [2/2]

static IOException org.jau.io.IOUtil.close	(	final Closeable	stream,
		final IOException[]	saveOneIfFree,
		final PrintStream	dumpExcess )

static

Helper to simplify closing Closeables.

Parameters

stream	the `Closeable` instance to close
saveOneIfFree	cache for one `IOException` to store, if not already used (excess)
dumpExcess	dump the excess `IOException` on this `PrintStream`

Returns: the excess IOException or null.

Definition at line 1271 of file IOUtil.java.

◆ copyStream2ByteArray()

static byte[] org.jau.io.IOUtil.copyStream2ByteArray ( InputStream stream ) throws IOException

static

Copy the specified input stream to a byte array, which is being returned.

Definition at line 231 of file IOUtil.java.

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◆ copyStream2ByteBuffer() [1/2]

static ByteBuffer org.jau.io.IOUtil.copyStream2ByteBuffer ( final InputStream stream ) throws IOException

static

Copy the specified input stream to a NIO ByteBuffer w/ native byte order, which is being returned.

The implementation creates the ByteBuffer w/ copyStream2ByteArray(InputStream)'s returned byte array.

Parameters

stream input stream, which will be wrapped into a BufferedInputStream, if not already done.

Definition at line 267 of file IOUtil.java.

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◆ copyStream2ByteBuffer() [2/2]

static ByteBuffer org.jau.io.IOUtil.copyStream2ByteBuffer	(	InputStream	stream,
		int	initialCapacity ) throws IOException

static

Copy the specified input stream to a NIO ByteBuffer w/ native byte order, which is being returned.

The implementation creates the ByteBuffer w/ copyStream2ByteArray(InputStream)'s returned byte array.

Parameters

stream	input stream, which will be wrapped into a BufferedInputStream, if not already done.
initialCapacity	initial buffer capacity in bytes, if > available bytes

Definition at line 278 of file IOUtil.java.

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◆ copyStream2File()

static int org.jau.io.IOUtil.copyStream2File	(	final InputStream	in,
		final File	outFile,
		int	totalNumBytes ) throws IOException

static

Copy the specified input stream to the specified output file.

The total number of bytes written is returned.

Parameters

in	the source
outFile	the destination
totalNumBytes	informal number of expected bytes, maybe used for user feedback while processing. -1 if unknown

Returns

Exceptions

IOException

Definition at line 170 of file IOUtil.java.

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◆ copyStream2Stream() [1/2]

static int org.jau.io.IOUtil.copyStream2Stream	(	final InputStream	in,
		final OutputStream	out,
		final int	totalNumBytes ) throws IOException

static

Copy the specified input stream to the specified output stream.

The total number of bytes written is returned.

Parameters

in	the source
out	the destination
totalNumBytes	informal number of expected bytes, maybe used for user feedback while processing. -1 if unknown

Returns

Exceptions

IOException

Definition at line 190 of file IOUtil.java.

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◆ copyStream2Stream() [2/2]

static int org.jau.io.IOUtil.copyStream2Stream	(	final int	bufferSize,
		final InputStream	in,
		final OutputStream	out,
		final int	totalNumBytes ) throws IOException

static

Copy the specified input stream to the specified output stream.

The total number of bytes written is returned.

Parameters

bufferSize	the intermediate buffer size, should be `MachineDataInfo#pageSizeInBytes()` for best performance.
in	the source
out	the destination
totalNumBytes	informal number of expected bytes, maybe used for user feedback while processing. -1 if unknown

Returns

Exceptions

IOException

Definition at line 205 of file IOUtil.java.

◆ copyURLConn2File()

static int org.jau.io.IOUtil.copyURLConn2File	(	final URLConnection	conn,
		final File	outFile ) throws IOException

static

Copy the specified URL resource to the specified output file.

The total number of bytes written is returned.

Parameters

conn	the open URLConnection
outFile	the destination

Returns

Exceptions

IOException

Definition at line 147 of file IOUtil.java.

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◆ createTempFile()

static File org.jau.io.IOUtil.createTempFile	(	final String	prefix,
		final String	suffix,
		final boolean	executable ) throws IllegalArgumentException, IOException, SecurityException

static

Utilizing File#createTempFile(String, String, File) using getTempDir(boolean) as the directory parameter, ie.

location of the root temp folder.

See also: File#createTempFile(String, String); File#createTempFile(String, String, File); getTempDir(boolean)

Parameters

prefix
suffix
executable	true if the temporary root folder needs to hold executable files, otherwise false.

Returns

Exceptions

IllegalArgumentException
IOException	if no temporary directory could be determined or temp file could not be created
SecurityException

Definition at line 1242 of file IOUtil.java.

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◆ filesOf()

static ArrayList< String > org.jau.io.IOUtil.filesOf	(	final List< String >	paths,
		final List< Pattern >	excludes,
		final List< Pattern >	includes )

static

Retrieve the list of all filenames traversing through given paths.

Parameters

paths	list of paths to traverse through, containing directories and files
excludes	optional list of exclude `Pattern`. All `matching` files or directories will be omitted. Maybe be null or empty.
includes	optional list of explicit include `Pattern`. If given, only `matching` files will be returned, otherwise all occurring.

Returns: list of unsorted filenames within given paths

Definition at line 1295 of file IOUtil.java.

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◆ getBasename()

static String org.jau.io.IOUtil.getBasename ( String fname ) throws URISyntaxException

static

Returns the basename of the given fname w/o directory part.

Exceptions

URISyntaxException if path is empty or has no parent directory available while resolving ../

Definition at line 420 of file IOUtil.java.

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◆ getClassFileName()

static String org.jau.io.IOUtil.getClassFileName ( final String clazzBinName )

static

Definition at line 397 of file IOUtil.java.

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◆ getClassURL()

static URL org.jau.io.IOUtil.getClassURL	(	final String	clazzBinName,
		final ClassLoader	cl ) throws IOException

static

Parameters

clazzBinName	com.jogamp.common.util.cache.TempJarCache
cl	ClassLoader to locate the JarFile

Returns: jar:file:/usr/local/projects/JOGL/gluegen/build-x86_64/gluegen-rt.jar!/com/jogamp/common/util/cache/TempJarCache.class

Exceptions

IOException if the jar file could not been found by the ClassLoader

Definition at line 408 of file IOUtil.java.

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◆ getDirname()

static String org.jau.io.IOUtil.getDirname ( String fname ) throws URISyntaxException

static

Returns unified '/' dirname including the last '/'.

Exceptions

URISyntaxException if path is empty or has no parent directory available while resolving ../

Definition at line 433 of file IOUtil.java.

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◆ getFileOutputStream()

static FileOutputStream org.jau.io.IOUtil.getFileOutputStream	(	final File	file,
		final boolean	allowOverwrite ) throws IOException

static

Definition at line 386 of file IOUtil.java.

◆ getFileSuffix() [1/2]

static String org.jau.io.IOUtil.getFileSuffix ( final File file )

static

Returns the lowercase suffix of the given file name (the text after the last '.

' in the file name). Returns null if the file name has no suffix. Only operates on the given file name; performs no I/O operations.

Parameters

file	name of the file

Returns: lowercase suffix of the file name

Exceptions

NullPointerException if file is null

Definition at line 349 of file IOUtil.java.

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◆ getFileSuffix() [2/2]

static String org.jau.io.IOUtil.getFileSuffix ( final String filename )

static

Returns the lowercase suffix of the given file name (the text after the last '.

' in the file name). Returns null if the file name has no suffix. Only operates on the given file name; performs no I/O operations.

Parameters

filename name of the file

Returns: lowercase suffix of the file name

Exceptions

NullPointerException if filename is null

Definition at line 363 of file IOUtil.java.

◆ getParentOf()

static String org.jau.io.IOUtil.getParentOf ( final String path ) throws URISyntaxException

static

Parameters

path	assuming a slashified path, either denotes a file or directory, either relative or absolute.

Returns: parent of path

Exceptions

URISyntaxException if path is empty or has no parent directory available

Definition at line 587 of file IOUtil.java.

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◆ getRelativeOf()

static String org.jau.io.IOUtil.getRelativeOf	(	final File	baseLocation,
		final String	relativeFile ) throws URISyntaxException

static

Generates a path for the 'relativeFile' relative to the 'baseLocation'.

Parameters

baseLocation	denotes a directory
relativeFile	denotes a relative file to the baseLocation

Exceptions

URISyntaxException if path is empty or has no parent directory available while resolving ../

Definition at line 569 of file IOUtil.java.

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◆ getResource() [1/2]

static URLConnection org.jau.io.IOUtil.getResource	(	final String	resourcePath,
		final ClassLoader	cl )

static

Locating a resource using the ClassLoader's facilities and org.jau.net.AssetURLContext.

Returns the resolved and connected URLConnection or null if not found.

Return null if org.jau.net.AssetURLContext is not available.

See also: ClassLoader#getResource(String); ClassLoader#getSystemResource(String); URL#URL(String); File#File(String)

Definition at line 554 of file IOUtil.java.

◆ getResource() [2/2]

static URLConnection org.jau.io.IOUtil.getResource	(	final String	resourcePath,
		final ClassLoader	classLoader,
		final Class<?>	relContext )

static

Locating a resource using getResource(String, ClassLoader):

relative: relContext's package name-path plus resourcePath via classLoader. This allows locations relative to JAR- and other URLs. The resourcePath may start with ../ to navigate to parent folder. This attempt is skipped if relContext is null.
absolute: resourcePath as is via classLoader.

Returns the resolved and open URLConnection or null if not found.

Parameters

resourcePath	the resource path to locate relative or absolute
classLoader	the optional `ClassLoader`, recommended
relContext	relative context, i.e. position, of the `resourcePath`, to perform the relative lookup, if not `null`.

See also: getResource(String, ClassLoader); ClassLoader#getResource(String); ClassLoader#getSystemResource(String)

Definition at line 512 of file IOUtil.java.

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◆ getTempDir()

static File org.jau.io.IOUtil.getTempDir ( final boolean executable ) throws SecurityException, IOException

static

Returns a platform independent writable directory for temporary files consisting of the platform's temp-root + tmpSubDir, e.g.

/tmp/jau_0000/.

On standard Java the temp-root folder is specified by java.io.tempdir.

On Android the temp-root folder is relative to the applications local folder (see Context#getDir(String, int)) is returned, if the Android application/activity has registered it's Application Context via StaticContext.init(..). This allows using the temp folder w/o the need for sdcard access, which would be the java.io.tempdir location on Android!

In case temp-root is the users home folder, a dot is being prepended to tmpSubDir, i.e.: /home/user/.jau_0000/.

Parameters

executable true if the user intents to launch executables from the temporary directory, otherwise false.

Exceptions

IOException	if no temporary directory could be determined
SecurityException	if access to `java.io.tmpdir` is not allowed within the current security context

See also: PropertyAccess.getProperty(String, boolean); Context#getDir(String, int)

Definition at line 1089 of file IOUtil.java.

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◆ openURL() [1/2]

static URLConnection org.jau.io.IOUtil.openURL ( final URL url )

static

Returns the connected URLConnection, or null if not url is not available.

Definition at line 657 of file IOUtil.java.

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◆ openURL() [2/2]

static URLConnection org.jau.io.IOUtil.openURL	(	final URL	url,
		final String	dbgmsg )

static

Returns the connected URLConnection, or null if not url is not available.

Definition at line 664 of file IOUtil.java.

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◆ slashify()

static String org.jau.io.IOUtil.slashify	(	final String	path,
		final boolean	startWithSlash,
		final boolean	endWithSlash ) throws URISyntaxException

static

Parameters

path
startWithSlash
endWithSlash

Returns

Exceptions

URISyntaxException if path is empty or has no parent directory available while resolving ../

Definition at line 327 of file IOUtil.java.

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◆ testDir()

static File org.jau.io.IOUtil.testDir	(	final File	dir,
		final boolean	create,
		final boolean	executable ) throws SecurityException

static

Returns the directory dir, which is processed and tested as described below.

If create is true and the directory does not exist yet, it is created incl. all sub-directories.
If dirName exists, but is not a directory, null is being returned.
If the directory does not exist or is not writeable, null is being returned.
If executable is true and files cannot be executed from the directory, null is being returned.

Parameters

dir	the directory to process
create	true if the directory shall be created if not existing
executable	true if the user intents to launch executables from the temporary directory, otherwise false.

Exceptions

SecurityException if file creation and process execution is not allowed within the current security context

Definition at line 1010 of file IOUtil.java.

◆ testDirExec()

static boolean org.jau.io.IOUtil.testDirExec ( final File dir ) throws SecurityException

static

Returns true if the given dir @endiliteral.

exists, and
is a directory, and
is writeable, and
files can be executed from the directory

Exceptions

SecurityException if file creation and process execution is not allowed within the current security context

Parameters

dir

Definition at line 863 of file IOUtil.java.

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◆ testFile()

static boolean org.jau.io.IOUtil.testFile	(	final File	file,
		final boolean	shallBeDir,
		final boolean	shallBeWritable )

static

Test whether file exists and matches the given requirements.

Parameters

file
shallBeDir
shallBeWritable

Returns

Definition at line 767 of file IOUtil.java.

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Member Data Documentation

◆ DEBUG

final boolean org.jau.io.IOUtil.DEBUG

static

Definition at line 62 of file IOUtil.java.

◆ patternSpaceEnc

final Pattern org.jau.io.IOUtil.patternSpaceEnc = Pattern.compile("%20")

static

Definition at line 652 of file IOUtil.java.

◆ tmpSubDir

final String org.jau.io.IOUtil.tmpSubDir = "jau"

static

Subdirectory within platform's temporary root directory where all JogAmp related temp files are being stored: jau @endiliteral.

Definition at line 128 of file IOUtil.java.

The documentation for this class was generated from the following file:

java_base/org/jau/io/IOUtil.java

Classes

Static Public Member Functions

Static Public Attributes

Detailed Description

Member Function Documentation

◆ appendCharStream()

◆ cleanPathString()

◆ close() [1/2]

◆ close() [2/2]

◆ copyStream2ByteArray()

◆ copyStream2ByteBuffer() [1/2]

◆ copyStream2ByteBuffer() [2/2]

◆ copyStream2File()

◆ copyStream2Stream() [1/2]

◆ copyStream2Stream() [2/2]

◆ copyURLConn2File()

◆ createTempFile()

◆ filesOf()

◆ getBasename()

◆ getClassFileName()

◆ getClassURL()

◆ getDirname()

◆ getFileOutputStream()

◆ getFileSuffix() [1/2]

◆ getFileSuffix() [2/2]

◆ getParentOf()

◆ getRelativeOf()

◆ getResource() [1/2]

◆ getResource() [2/2]

◆ getTempDir()

◆ openURL() [1/2]

◆ openURL() [2/2]

◆ slashify()

◆ testDir()

◆ testDirExec()

◆ testFile()

Member Data Documentation

◆ DEBUG

◆ patternSpaceEnc

◆ tmpSubDir