global

Class FileOps

java.lang.Object

global.FileOps

public class FileOps
extends java.lang.Object

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	FileOps.FileLineIterator Enables iterating line wise over a text file.

Constructor Summary

Constructors

Constructor and Description
FileOps()

Method Summary

Modifier and Type	Method and Description
static java.lang.String	fileContentToString(java.io.File file) Reads the whole content of the given (text) file and returns it as a string.
static java.lang.String	fileContentToString(java.lang.String filename) Reads the whole content of the (text) file with the given filename.
static java.util.LinkedList<java.lang.String>	fileLinesToList(java.io.File file) Creates and returns a list containing the lines of the given (text) file.
static java.util.LinkedList<java.lang.String>	fileLinesToList(java.lang.String filename) Creates and returns a list containing the lines of the file with the given filename.
static java.lang.Iterable<java.lang.String>	iterateFileLines(java.io.File file) Enables iterating over the lines of the given (text) file.
static java.lang.Iterable<java.lang.String>	iterateFileLines(java.lang.String filename) Enables iterating over the lines of the (text) file with the given filename.
static java.lang.Iterable<java.io.File>	iterateFiles(java.io.File directory, boolean recursive, boolean addDirectories) Enables iterating over all files of the given directory.
static java.lang.Iterable<java.io.File>	iterateFiles(java.io.File directory, boolean recursive, boolean addDirectories, java.lang.String[] extensions) Enables iterating over all or some files of the given directory.
static void	listFiles(java.util.LinkedList<java.io.File> targetList, java.io.File directory, boolean recursive, boolean addDirectories, java.lang.String[] extensions) Adds all or some files of the given directory with the given extensions to the given list.
static java.util.LinkedList<java.io.File>	listFiles(java.lang.String directory, boolean recursive, boolean addDirectories, java.lang.String[] extensions) Lists all or some files of the given directory.
static void	writeStringToFile(java.io.File file, java.lang.String string) Creates a whole text file with the given string as content.
static void	writeStringToFile(java.lang.String filename, java.lang.String string) Creates a whole text file with the given string as content.
static java.io.BufferedWriter	writeToFile(java.io.File file) Initializes and returns a buffered writer to write into the given file.

Methods inherited from class java.lang.Object

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

Constructor Detail

FileOps

public FileOps()

Method Detail

listFiles

public static void listFiles(java.util.LinkedList<java.io.File> targetList,
                             java.io.File directory,
                             boolean recursive,
                             boolean addDirectories,
                             java.lang.String[] extensions)

Adds all or some files of the given directory with the given extensions to the given list.

Parameters:

targetList - the list in which to add the files.

directory - the file system directory containing the files to add.

recursive - if true, then the files of all sub directories will be added as well.

addDirectories - if true, then also directories will be added as a file in the target list.

extensions - the file extensions. If null, then all files will be added. Otherwise, only files with extensions contained in the array will be added (non-case-sensitive).

listFiles

public static java.util.LinkedList<java.io.File> listFiles(java.lang.String directory,
                                                           boolean recursive,
                                                           boolean addDirectories,
                                                           java.lang.String[] extensions)

Lists all or some files of the given directory.

Parameters:

directory - the directory containing the files to list.

recursive - if true, then the files of all sub directories will be added as well.

addDirectories - if true, then also directories will be added as a file in the list.

extensions - the file extensions. If null, then all files will be added. Otherwise, only files with extensions contained in the array will be added (non-case-sensitive).

Returns:

a list of the found files.

iterateFiles

public static java.lang.Iterable<java.io.File> iterateFiles(java.io.File directory,
                                                            boolean recursive,
                                                            boolean addDirectories,
                                                            java.lang.String[] extensions)

Enables iterating over all or some files of the given directory.

Parameters:

directory - the directory containing the files to iterate over.

recursive - if true, then the iteration includes the files of the sub directory.

addDirectories - if true, then also sub directories will be iterated as a file.

extensions - the file extensions. Only files with extensions which are contained in the given array are part of the iteration.

Returns:

an Iterable to iterate over the files.

iterateFiles

public static java.lang.Iterable<java.io.File> iterateFiles(java.io.File directory,
                                                            boolean recursive,
                                                            boolean addDirectories)

Enables iterating over all files of the given directory.

Parameters:

directory - the directory containing the files to iterate over.

recursive - if true, then the iteration includes the files of the sub directory.

addDirectories - if true, then also sub directories will be iterated as a file.

Returns:

an Iterable to iterate over the files.

fileContentToString

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

Reads the whole content of the given (text) file and returns it as a string.

Parameters:

file - the file to read.

Returns:

the file content as a string.

Throws:

java.io.IOException - if reading of the given file fails.

fileContentToString

public static java.lang.String fileContentToString(java.lang.String filename)
                                            throws java.io.IOException

Reads the whole content of the (text) file with the given filename.

Parameters:

filename - the relative or absolute filename.

Returns:

the file content as a string.

Throws:

java.io.IOException - if reading the file fails.

writeStringToFile

public static void writeStringToFile(java.io.File file,
                                     java.lang.String string)
                              throws java.io.IOException

Creates a whole text file with the given string as content.

Parameters:

file - the file to write to.

string - the content of the file.

Throws:

java.io.IOException - if creating the file fails.

writeStringToFile

public static void writeStringToFile(java.lang.String filename,
                                     java.lang.String string)
                              throws java.io.IOException

Creates a whole text file with the given string as content.

Parameters:

filename - the relative or absolute filename of the file to create.

string - the content of the file.

Throws:

java.io.IOException - if creating the file fails.

iterateFileLines

public static java.lang.Iterable<java.lang.String> iterateFileLines(java.io.File file)

Enables iterating over the lines of the given (text) file.

Parameters:

file - the file to iterate over.

Returns:

an Iterable to iterate or null, if the file does not exist or another error occurs.

iterateFileLines

public static java.lang.Iterable<java.lang.String> iterateFileLines(java.lang.String filename)

Enables iterating over the lines of the (text) file with the given filename.

Parameters:

filename - the relative or absolute filename of the file.

Returns:

an Iterable to iterate or null, if the file does not exist or another error occurs.

writeToFile

public static java.io.BufferedWriter writeToFile(java.io.File file)
                                          throws java.io.IOException

Initializes and returns a buffered writer to write into the given file.

Parameters:

file - the file to write to.

Returns:

a BufferedWriter to write into the file.

Throws:

java.io.IOException - if creating the buffered writer fails.

fileLinesToList

public static java.util.LinkedList<java.lang.String> fileLinesToList(java.io.File file)

Creates and returns a list containing the lines of the given (text) file.

Parameters:

file - the file to read.

Returns:

a list containing all lines of the content of the given file.

fileLinesToList

public static java.util.LinkedList<java.lang.String> fileLinesToList(java.lang.String filename)

Creates and returns a list containing the lines of the file with the given filename.

Parameters:

filename - the relative or absolute path of the file with the given filename.

Returns:

a list containing all lines of the content of the file or null, if the file does not exist or another error occurs.