Class FileUtil

java.lang.Object

com.ibm.wala.util.io.FileUtil

public class FileUtil
extends Object

Simple utilities for accessing files.

Constructor Summary

Constructors

Constructor	Description
FileUtil()

Method Summary

Modifier and Type	Method	Description
static void	copy(String srcFileName, String destFileName)	Copies a file from the specified source path to the destination path, replacing the destination if it already exists.
static FileOutputStream	createFile(String fileName)	Create a FileOutputStream corresponding to a particular file name.
static void	deleteContents(String directory)	delete all files (recursively) in a directory.
static Collection<File>	listFiles(String dir, String regex, boolean recurse)	List all the files in a directory that match a regular expression
static byte[]	readBytes(InputStream s)	read fully the contents of s and return a byte array holding the result
static void	recurseFiles(Consumer<File> action, Predicate<File> filter, File top)
static void	writeFile(File f, String content)	write string s into file f

Methods inherited from class Object

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

Constructor Details

FileUtil

public FileUtil()

Method Details

listFiles

public static Collection<File> listFiles(String dir,
 @Language("RegExp")
 String regex,
 boolean recurse)

List all the files in a directory that match a regular expression

Parameters:

recurse - recurse to subdirectories?

Throws:

IllegalArgumentException - if dir is null

copy

public static void copy(String srcFileName,
 String destFileName)
                 throws IOException

Copies a file from the specified source path to the destination path, replacing the destination if it already exists.

Parameters:

srcFileName - the path of the source file

destFileName - the path of the destination file

Throws:

IOException - if an I/O error occurs during the copy operation

deleteContents

public static void deleteContents(String directory)
                           throws IOException

delete all files (recursively) in a directory. This is dangerous. Use with care.

Throws:

IOException - if there's a problem deleting some file

createFile

public static FileOutputStream createFile(String fileName)
                                   throws IOException

Create a FileOutputStream corresponding to a particular file name. Delete the existing file if one exists.

Throws:

IOException

readBytes

public static byte[] readBytes(InputStream s)
                        throws IOException

read fully the contents of s and return a byte array holding the result

Throws:

IOException

writeFile

public static void writeFile(File f,
 String content)
                      throws IOException

write string s into file f

Throws:

IOException

recurseFiles

public static void recurseFiles(Consumer<File> action,
 Predicate<File> filter,
 File top)