cat.lump.aq.basics.io.files

Class FileIO

java.lang.Object

cat.lump.aq.basics.io.files.FileIO

public class FileIO
extends java.lang.Object

Field Summary

Fields

Modifier and Type	Field and Description
static java.lang.String	separator

Constructor Summary

Constructors

Constructor and Description
FileIO()

Method Summary

Methods

Modifier and Type	Method and Description
static void	appendStringToFile(java.io.File f, java.lang.String text, boolean bom)
static java.lang.String	changeFileSuffix(java.io.File filename, java.lang.String newSuffix)
static java.lang.String	changeFileSuffix(java.lang.String filename, java.lang.String newSuffix) Given a filename, whether relative or absolute, it substitutes the suffix for a newSuffix.
static void	copy(java.io.File from, java.io.File to)
static void	createDir(java.io.File dir)
static boolean	deleteDir(java.io.File dir) Deletes all files and subdirectories under "dir".
static boolean	deleteFile(java.io.File file)
static boolean	dirCanBeRead(java.io.File dir) Check whether the directory exists and can be read.
static int	fileCountLines(java.io.File f) Counts the lines in a file http://stackoverflow.com/questions/453018/number-of-lines-in-a-file-in-java
static java.lang.String[]	fileToLines(java.io.File f) Opens a file and returns the lines in it
static java.lang.String	fileToString(java.io.File f)
static java.util.List<java.lang.String>	getFilesExt(java.io.File dir, java.lang.String ext) Gets all the files with a given extension ext
static java.util.List<java.lang.String>	getFilesRecursively(java.io.File dir, java.lang.String ext)
static java.util.List<java.lang.String>	getFilesRecursively(java.io.File dir, java.lang.String ext, long timeMin, long timeMax)
static java.util.List<java.lang.String>	getSpecificDirs(java.io.File dir, java.lang.String pref, java.lang.String ext)
static java.util.List<java.lang.String>	getSpecificFilesRecursively(java.io.File dir, java.lang.String pref, java.lang.String ext)
static java.util.List<java.lang.String>	getSpecificFilesRecursively(java.io.File dir, java.lang.String pref, java.lang.String ext, long timeMin, long timeMax)
static java.io.BufferedReader	gZipToString(java.lang.String fileName) Opens a gziped file and returns the lines it contains
static java.lang.String	md5(java.io.File file)
static java.lang.String	md5(java.lang.String text)
static void	move(java.io.File in, java.io.File out)
static java.lang.Object	readObject(java.io.File f)
static void	stringToFile(java.io.File f, java.lang.String text, boolean bom)
static void	writeObject(java.lang.Object x, java.io.File f)

Methods inherited from class java.lang.Object

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

Field Detail

separator

public static final java.lang.String separator

Constructor Detail

FileIO

public FileIO()

Method Detail

md5

public static java.lang.String md5(java.io.File file)
                            throws java.io.FileNotFoundException,
                                   java.security.NoSuchAlgorithmException,
                                   java.io.IOException

Throws:

java.io.FileNotFoundException

java.security.NoSuchAlgorithmException

java.io.IOException

md5

public static java.lang.String md5(java.lang.String text)
                            throws java.security.NoSuchAlgorithmException,
                                   java.io.UnsupportedEncodingException

Throws:

java.security.NoSuchAlgorithmException

java.io.UnsupportedEncodingException

getFilesRecursively

public static java.util.List<java.lang.String> getFilesRecursively(java.io.File dir,
                                                   java.lang.String ext)

writeObject

public static void writeObject(java.lang.Object x,
               java.io.File f)

readObject

public static java.lang.Object readObject(java.io.File f)

getFilesRecursively

public static java.util.List<java.lang.String> getFilesRecursively(java.io.File dir,
                                                   java.lang.String ext,
                                                   long timeMin,
                                                   long timeMax)

getFilesExt

public static java.util.List<java.lang.String> getFilesExt(java.io.File dir,
                                           java.lang.String ext)

Gets all the files with a given extension ext

Parameters:

dir -

ext -

Returns:

A List with the files

dirCanBeRead

public static boolean dirCanBeRead(java.io.File dir)

Check whether the directory exists and can be read.

Parameters:

dir -

Returns:

true if directory can be read

getSpecificFilesRecursively

public static java.util.List<java.lang.String> getSpecificFilesRecursively(java.io.File dir,
                                                           java.lang.String pref,
                                                           java.lang.String ext)

getSpecificFilesRecursively

public static java.util.List<java.lang.String> getSpecificFilesRecursively(java.io.File dir,
                                                           java.lang.String pref,
                                                           java.lang.String ext,
                                                           long timeMin,
                                                           long timeMax)

getSpecificDirs

public static java.util.List<java.lang.String> getSpecificDirs(java.io.File dir,
                                               java.lang.String pref,
                                               java.lang.String ext)

createDir

public static void createDir(java.io.File dir)
                      throws java.io.IOException

Throws:

java.io.IOException

gZipToString

public static java.io.BufferedReader gZipToString(java.lang.String fileName)
                                           throws java.io.IOException

Opens a gziped file and returns the lines it contains

Parameters:

fileName - The input gziped file

Returns:

A BufferedReader useful for the efficient reading of the long file

Throws:

java.io.IOException

fileToLines

public static java.lang.String[] fileToLines(java.io.File f)
                                      throws java.io.IOException

Opens a file and returns the lines in it

Parameters:

f -

Returns:

array of

Throws:

java.io.IOException

fileCountLines

public static int fileCountLines(java.io.File f)
                          throws java.io.IOException

Counts the lines in a file http://stackoverflow.com/questions/453018/number-of-lines-in-a-file-in-java

Parameters:

f -

Returns:

number of lines

Throws:

java.io.IOException

fileToString

public static java.lang.String fileToString(java.io.File f)
                                     throws java.io.IOException

Throws:

java.io.IOException

stringToFile

public static void stringToFile(java.io.File f,
                java.lang.String text,
                boolean bom)
                         throws java.io.IOException

Throws:

java.io.IOException

appendStringToFile

public static void appendStringToFile(java.io.File f,
                      java.lang.String text,
                      boolean bom)
                               throws java.io.IOException

Throws:

java.io.IOException

copy

public static void copy(java.io.File from,
        java.io.File to)
                 throws java.io.IOException

Throws:

java.io.IOException

move

public static void move(java.io.File in,
        java.io.File out)
                 throws java.io.IOException

Throws:

java.io.IOException

deleteDir

public static boolean deleteDir(java.io.File dir)

Deletes all files and subdirectories under "dir".

Parameters:

dir - Directory to be deleted

Returns:

boolean Returns "true" if all deletions were successful. If a deletion fails, the method stops attempting to delete and returns "false".

deleteFile

public static boolean deleteFile(java.io.File file)

changeFileSuffix

public static java.lang.String changeFileSuffix(java.io.File filename,
                                java.lang.String newSuffix)

changeFileSuffix

public static java.lang.String changeFileSuffix(java.lang.String filename,
                                java.lang.String newSuffix)

Given a filename, whether relative or absolute, it substitutes the suffix for a newSuffix. If current filename does not contain suffix, newSuffix is appended at the end Note that this method is able to handle absolute paths with dots in the middle of the parent directories.

Parameters:

filename -

newSuffix -

Returns:

file with the new suffix