IOUtil (JCMS API)

java.lang.Object
- com.jalios.io.IOUtil

```
public class IOUtil
extends java.lang.Object
```
This class provides a set of static methods which perform various i/o operations.

Version:

$Revision: 89568 $

Author:

Olivier Dedieu

Field Summary

Fields
Modifier and Type	Field and Description
`static int`	`DOWNLOAD_ERROR`
`static int`	`DOWNLOAD_OK`
`static java.lang.String`	`MIMETYPE_PLAINTEXT`
`protected static org.apache.oro.text.regex.Pattern`	`patternBlank1`
`protected static org.apache.oro.text.regex.Pattern`	`patternBlank2`
`static java.lang.String`	`REVISION`

Method Summary

Methods
Modifier and Type	Method and Description
`static java.lang.String`	`base64DecodeAndInflateString(java.lang.String str)` Inflates Base64 encoded string.
`static boolean`	`belongsToDirectory(java.io.File dir, java.io.File untrustedFile)` Check that the specified file belongs to the specified directory or any of its subdirectory.
`static boolean`	`canWrite(java.io.File file, boolean checkParent)` Tests whether the application can modify to the file denoted by the given file.
`static boolean`	`checkFileSizeAndMtime(java.io.File file, long size, long mtime)` Returns true if the given file exists and has the given size and the given mtime.
`static void`	`closeQuietly(java.io.InputStream inputStream)` Close the given inputStream.
`static void`	`closeQuietly(java.io.OutputStream outputStream)` Close the given writer.
`static void`	`closeQuietly(java.io.Reader reader)` Close the given reader.
`static void`	`closeQuietly(java.io.Writer writer)` Close the given writer.
`static void`	`convertCharset(java.io.File file, java.lang.String fromCS, java.lang.String toCS)` Encode the given file with a given charset.
`static int`	`copy(java.io.InputStream input, java.io.OutputStream output)` Copy bytes from an `InputStream` to an `OutputStream`.
`static void`	`copy(java.io.InputStream input, java.io.Writer output, java.lang.String encoding)` Copy bytes from an `InputStream` to chars on a `Writer` using the specified character encoding, or UTF-8 if null.
`static void`	`copy(java.io.Reader input, java.io.OutputStream output, java.lang.String encoding)` Copy chars from a `Reader` to bytes on an `OutputStream` using the specified character encoding, and calling flush.
`static int`	`copy(java.io.Reader input, java.io.Writer output)` Copy chars from a `Reader` to a `Writer`.
`static void`	`copyFile(java.io.File f1, java.io.File f2)` Copy f1 into f2 (mkdirs for f2)
`static void`	`copyFile(java.lang.String filename1, java.lang.String filename2)` Copy filename1 into filename2 (mkdirs for filename2)
`static java.io.File`	`createTempDir()` Creates a new empty directory
`static java.io.File`	`createTempDir(java.lang.String name, java.lang.String prefix, java.io.File parentDir, boolean clear)` Creates a new empty directory
`static void`	`deepCopy(java.io.File srcDir, java.io.File tgtDir)` Perform a directory deep copy.
`static void`	`deepCopy(java.io.File srcDir, java.io.File tgtDir, boolean deleteEmptyFile)` Perform a directory deep copy.
`static void`	`deepCopy(java.io.File srcDir, java.io.File tgtDir, boolean deleteEmptyFile, java.io.FileFilter filter)` Perform a directory deep copy.
`static void`	`deepDelete(java.io.File file)` Deletes a whole directory.
`static void`	`deepDelete(java.io.File file, ActionListener listener)` Deletes a whole directory.
`static void`	`deepDeleteEmptyDirectories(java.io.File dir)` Delete recursively all enpty directories under a given directory.
`static void`	`deepDeleteEmptyDirectories(java.io.File dir, java.io.FileFilter filter)` Delete recursively all enpty directories under a given directory.
`static void`	`deepDeleteEmptyDirectories(java.io.File dir, java.io.FileFilter filter, ActionListener listener)` Delete recursively all enpty directories under a given directory.
`static java.util.List<java.io.File>`	`deepListFiles(java.io.File dir, java.io.FileFilter filter)` Return a list of files from the given directory and matching the given filter.
`static java.util.List<java.io.File>`	`deepListFiles(java.io.File dir, java.io.FileFilter filter, boolean checkDir)` Return a list of files from the given directory and matching the given filter.
`static void`	`deepListFiles(java.io.File file, java.util.Set<java.io.File> fileSet, java.util.Set<java.lang.String> blackSet)` Follow recursively a Path each File that are not Blacklisted (ends with a String of the BlackListSet) are added to the FileSet Compare (convert \\ to /) but store File with \ or / depends of platform
`static java.lang.String`	`deflateAndBase64EncodeString(java.lang.String str)` Compresses (deflates) a string and Base64 encodes the result and returns it as a string.
`static int`	`downloadFile(java.net.URL url, java.io.File file, long lastModified, java.lang.String ticket)` Download the given URL
`static byte[]`	`emptyInputStream(java.io.DataInputStream dis)` Emptys an InputStream
`static void`	`forceDeepCopy(java.io.File srcDir, java.io.File tgtDir, boolean deleteEmptyFile, java.io.FileFilter filter)` Perform a directory deep copy.
`static java.lang.String`	`getDownloadTicket(java.io.File file)` Get a download ticket for the given file
`static java.lang.String`	`getExtension(java.io.File file)` Returns the extension of the given file (without the leading "." char).
`static java.lang.String`	`getExtension(java.lang.String filename)` Returns the extension of the given file (without the leading "." char).
`static java.io.InputStream`	`getInputStream(java.net.HttpURLConnection httpConn)` Retrieve the input stream of the specified HttpURLConnection, decoded appropriately if gzip was used.
`static java.lang.String`	`getMimeTypeFromMagicNumber(java.io.File file)` Gives the mime type of a file.
`static java.lang.String`	`getNewDirectory(java.io.File baseDir, java.lang.String subDir, long maxFilesPerDir)` Returns the relative path of directory to use for the new document to be created.
`static java.lang.String`	`getQualifiedName(java.io.File file)` This method return the name of a given file it return string before last '.' of the filename.
`static java.lang.String`	`getQualifiedName(java.lang.String filename)` This method return the name of a given file name it return string before last '.' of the filename.
`static java.lang.String`	`getRelativePath(java.io.File dir, java.io.File file)` Return the relative path of the specified file in the specified directory.
`static java.io.File`	`getTempDir(java.lang.String name, java.lang.String prefix, java.io.File parentDir)` Returns An abstract pathname denoting an empty directory (this directory is not created).
`static java.io.InputStream`	`getZipFileStream(java.lang.String fileName, java.io.File zipFile)` Returns an InputStream on the File representing by the given fileName in the given zip file.
`static java.io.InputStream`	`getZipFileStream(java.lang.String fileName, java.io.File zipFile, boolean regexp)`
`static boolean`	`goToLine(java.io.InputStream in, long line)` Move the position of the given InputStream to the given line.
`static boolean`	`goToLine(java.io.RandomAccessFile raf, long line)` Move the position of the given InputStream to the given line.
`static boolean`	`isParent(java.io.File parent, java.io.File child)` Check if a File is a child of an other File recursively.
`static boolean`	`isSameContent(java.io.File f1, java.io.File f2)` Returns true if the given files have the same content.
`static boolean`	`moveFile(java.io.File f1, java.io.File f2)` Move f1 into f2 (mkdirs for f2).
`static java.net.HttpURLConnection`	`openConnection(java.net.URL url, boolean doOutput, boolean doInput, java.lang.String method)` Open a new HttpURLConnection for the specified url
`static java.lang.String[]`	`readList(java.io.Reader reader)` Returns all the lines read on a given Reader.
`static void`	`removeBlankLines(java.lang.String filename, boolean trim)` Remove all blank lines of a file.
`static void`	`searchAndReplace(java.io.File file, java.util.Map<java.lang.String,java.lang.String> map)` Execute a map of regular expression on a given file content.
`static void`	`searchAndReplace(java.io.File file, java.lang.String[] search, java.lang.String[] replace)` Execute an array of regular expression on a given file content.
`static java.lang.String`	`substringFile(java.io.File parentFile, java.io.File childFile)` If Parent is parent of child then we return the substraction: childPath - parentPath.
`static java.lang.String[]`	`tail(java.io.File file, int size, boolean skipBlank, java.lang.String encoding)` Returns the last lines of a file.
`static java.io.File`	`translateFile(java.io.File file, java.io.File srcDir, java.io.File tgtDir)` Returns the translated path of a given file which belongs to a given source directory into a target directory.
`static void`	`unzip(java.io.File file, java.io.File dir)` Unzip a file
`static void`	`unzip(java.io.File file, java.io.File dir, java.io.FileFilter filter)` Unzip a file
`static void`	`unzip(java.io.File file, java.io.File dir, java.io.FileFilter filter, java.nio.charset.Charset charset)` Unzip a file
`static void`	`unzip(java.lang.String filename, java.lang.String tgtDirname)` Unzip a file
`static void`	`unzip(java.lang.String filename, java.lang.String tgtDirname, java.io.FileFilter filter)` Unzip a file Adapted from: Working with Java Archive APIs Lawrence Rodrigues Java Report On-line http://archive.javareport.com/9808/html/features/archive/9806/rodrigues.shtml
`static void`	`unzip(java.lang.String filename, java.lang.String tgtDirname, java.io.FileFilter filter, java.nio.charset.Charset charset)` Unzip a file Adapted from: Working with Java Archive APIs Lawrence Rodrigues Java Report On-line http://archive.javareport.com/9808/html/features/archive/9806/rodrigues.shtml
`static void`	`writeArray(java.io.Writer writer, java.lang.String[] array)` Writes an array of String on a given Writer.
`static void`	`writeEnumeration(java.io.Writer writer, java.util.Enumeration<?> enu)` Writes an enumeration of object on a given Writer.
`static void`	`writeIterator(java.io.Writer writer, java.util.Iterator<?> it)` Writes an iteration of object on a given Writer.
`static void`	`zip(java.io.File[] files, java.lang.String destFile, int[] prefixLength, java.io.FileFilter[] filters)` Zip an array of files or directories into a file.
`static void`	`zip(java.io.File file, java.lang.String zipFile, int prefixLength, java.io.FileFilter filter)`
`static java.lang.String`	`zip(java.lang.String filename, boolean isParentDirRemoved)` Zip a file or a whole directory.
`static void`	`zip(java.lang.String filename, java.lang.String zipFile, boolean isParentDirRemoved)` Zip a file or a whole directory
`static void`	`zipWriter(java.io.File file, java.util.zip.ZipOutputStream zos, int prefixLength, java.io.FileFilter filter)` Zip all files of a directory that are accepted by the given FileFilter.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Field Detail
  - REVISION
```
public static final java.lang.String REVISION
```
    See Also:
    Constant Field Values
  - DOWNLOAD_ERROR
```
public static int DOWNLOAD_ERROR
```
  - DOWNLOAD_OK
```
public static int DOWNLOAD_OK
```
  - patternBlank1
```
protected static org.apache.oro.text.regex.Pattern patternBlank1
```
  - patternBlank2
```
protected static org.apache.oro.text.regex.Pattern patternBlank2
```
  - MIMETYPE_PLAINTEXT
```
public static final java.lang.String MIMETYPE_PLAINTEXT
```
    See Also:
    Constant Field Values
- Method Detail
  - readList
```
public static java.lang.String[] readList(java.io.Reader reader)
                                   throws java.io.IOException
```
    Returns all the lines read on a given Reader. All the lines are trimmed. Blank line and line which starts with # are skipped.
    
    Parameters:
    reader - the reader
    
    Returns:
    an array of String.
    
    Throws:
    
    java.io.IOException - if an exception occurs
  - deepListFiles
```
public static void deepListFiles(java.io.File file,
                 java.util.Set<java.io.File> fileSet,
                 java.util.Set<java.lang.String> blackSet)
```
    Follow recursively a Path each File that are not Blacklisted (ends with a String of the BlackListSet) are added to the FileSet Compare (convert \\ to /) but store File with \ or / depends of platform
    
    Parameters:
    file - the directory to follow
    fileSet - a Set where to put all files
    blackSet - a Set of String to identify Files that ends with that String
  - deepListFiles
```
public static java.util.List<java.io.File> deepListFiles(java.io.File dir,
                                         java.io.FileFilter filter)
```
    Return a list of files from the given directory and matching the given filter. If a filter is provided, the directories (and their content) that do not match the filter are skipped.
    
    Parameters:
    dir - the directory to explore
    filter - the FileFilter to use (may be null)
    
    Returns:
    a List of java.io.File
    Since:
    
    jcms-4.1
    
    See Also:
    deepListFiles(File, FileFilter, boolean)
  - deepListFiles
```
public static java.util.List<java.io.File> deepListFiles(java.io.File dir,
                                         java.io.FileFilter filter,
                                         boolean checkDir)
```
    Return a list of files from the given directory and matching the given filter.
    
    Parameters:
    dir - the directory to explore
    filter - the FileFilter to use (may be null)
    checkDir - if true the directories that do not match the filter are skipped.
    
    Returns:
    a List of java.io.File
    Since:
    
    jcms-5.6.1
  - substringFile
```
public static java.lang.String substringFile(java.io.File parentFile,
                             java.io.File childFile)
```
    If Parent is parent of child then we return the substraction: childPath - parentPath. Else return full child path. WARNING: return / for unix and \ for windows
    
    Parameters:
    parentFile - the parent File
    childFile - the child File
    
    Returns:
    childPath - parentPath
  - writeArray
```
public static void writeArray(java.io.Writer writer,
              java.lang.String[] array)
                       throws java.io.IOException
```
    Writes an array of String on a given Writer.
    
    Parameters:
    writer - the writer
    array - the array of String to write
    
    Throws:
    
    java.io.IOException - if an exception occurs
  - writeEnumeration
```
public static void writeEnumeration(java.io.Writer writer,
                    java.util.Enumeration<?> enu)
                             throws java.io.IOException
```
    Writes an enumeration of object on a given Writer. Uses the toString() method.
    
    Parameters:
    writer - the writer
    enu - the enumeration
    
    Throws:
    
    java.io.IOException - if an exception occurs
  - writeIterator
```
public static void writeIterator(java.io.Writer writer,
                 java.util.Iterator<?> it)
                          throws java.io.IOException
```
    Writes an iteration of object on a given Writer. Uses the toString() method.
    
    Parameters:
    writer - the writer
    it - the iterator
    
    Throws:
    
    java.io.IOException - if an exception occurs
  - unzip
```
public static void unzip(java.io.File file,
         java.io.File dir)
                  throws java.io.IOException
```
    Unzip a file
    
    Parameters:
    file - the file to unzip
    dir - the target directory
    
    Throws:
    
    java.io.IOException - if an exception occurs
    See Also:
    unzip(String, String, FileFilter)
  - unzip
```
public static void unzip(java.io.File file,
         java.io.File dir,
         java.io.FileFilter filter)
                  throws java.io.IOException
```
    Unzip a file
    
    Parameters:
    file - the file to unzip
    dir - the target directory
    filter - an optional FileFilter to filter the file to be extracted.
    
    Throws:
    
    java.io.IOException - if an exception occurs
    See Also:
    unzip(String, String, FileFilter)
  - unzip
```
public static void unzip(java.lang.String filename,
         java.lang.String tgtDirname)
                  throws java.io.IOException
```
    Unzip a file
    
    Parameters:
    filename - the name of the file to unzip
    tgtDirname - the name of the target directory
    
    Throws:
    
    java.io.IOException - if an exception occurs
    See Also:
    unzip(String, String, FileFilter)
  - unzip
```
public static void unzip(java.lang.String filename,
         java.lang.String tgtDirname,
         java.io.FileFilter filter)
                  throws java.io.IOException
```
    Unzip a file Adapted from: Working with Java Archive APIs Lawrence Rodrigues Java Report On-line http://archive.javareport.com/9808/html/features/archive/9806/rodrigues.shtml
    
    Parameters:
    filename - the name of the file to unzip
    tgtDirname - the name of the target directory
    filter - an optional FileFilter to filter the file to be extracted.
    
    Throws:
    
    java.io.IOException - if an exception occurs
    Since:
    
    jcms-5.7.0
  - unzip
```
public static void unzip(java.io.File file,
         java.io.File dir,
         java.io.FileFilter filter,
         java.nio.charset.Charset charset)
                  throws java.io.IOException
```
    Unzip a file
    
    Parameters:
    file - the file to unzip
    dir - the target directory
    filter - an optional FileFilter to filter the file to be extracted.
    charset - The charset to be used to decode the ZIP entry name (ignored if the language encoding bit of the ZIP entry's general purpose bit flag is set).
    
    Throws:
    
    java.io.IOException - if an exception occurs
    Since:
    
    jcms-9.0.4
    
    See Also:
    unzip(String, String, FileFilter)
  - unzip
```
public static void unzip(java.lang.String filename,
         java.lang.String tgtDirname,
         java.io.FileFilter filter,
         java.nio.charset.Charset charset)
                  throws java.io.IOException
```
    Unzip a file Adapted from: Working with Java Archive APIs Lawrence Rodrigues Java Report On-line http://archive.javareport.com/9808/html/features/archive/9806/rodrigues.shtml
    
    Parameters:
    filename - the name of the file to unzip
    tgtDirname - the name of the target directory
    filter - an optional FileFilter to filter the file to be extracted.
    charset - The charset to be used to decode the ZIP entry name (ignored if the language encoding bit of the ZIP entry's general purpose bit flag is set).
    
    Throws:
    
    java.io.IOException - if an exception occurs
    Since:
    
    jcms-9.0.4
  - zip
```
public static java.lang.String zip(java.lang.String filename,
                   boolean isParentDirRemoved)
                            throws java.io.IOException
```
    Zip a file or a whole directory. It produces a zip file which has the same name + ".zip"
    
    Parameters:
    filename - the name of file or directory to zip
    isParentDirRemoved - true if the parent path prefix of the filename must be removed in the zip file (eg: foo/* instead of a/b/c/foo/* when zipping directory "a/b/c/foo/")
    
    Returns:
    String the absolute path of the zip file
    
    Throws:
    
    java.io.IOException - if an exception occurs
  - zip
```
public static void zip(java.lang.String filename,
       java.lang.String zipFile,
       boolean isParentDirRemoved)
                throws java.io.IOException
```
    Zip a file or a whole directory
    
    Parameters:
    filename - the name of file or directory to zip
    zipFile - the name of the zip file to produce
    isParentDirRemoved - true if the parent path prefix of the filename must be removed in the zip file (eg: foo/* instead of a/b/c/foo/* when zipping directory "a/b/c/foo/")
    
    Throws:
    
    java.io.IOException - if an exception occurs
  - zip
```
public static void zip(java.io.File file,
       java.lang.String zipFile,
       int prefixLength,
       java.io.FileFilter filter)
                throws java.io.IOException
```
    Throws:
    
    java.io.IOException
  - zip
```
public static void zip(java.io.File[] files,
       java.lang.String destFile,
       int[] prefixLength,
       java.io.FileFilter[] filters)
                throws java.io.IOException
```
    Zip an array of files or directories into a file. Files are filtered by an array of FileFilters and are named according to an array of prefix sizes.
    
    Parameters:
    files - the array of files or directories to be zipped
    destFile - the path of the destination zip file
    prefixLength - an array of prefix size to be used for each element of the files array.
    filters - array of FileFilters to be used for filtering files.
    
    Throws:
    
    java.io.IOException - if an exception occurs
  - zipWriter
```
public static void zipWriter(java.io.File file,
             java.util.zip.ZipOutputStream zos,
             int prefixLength,
             java.io.FileFilter filter)
                      throws java.io.IOException
```
    Zip all files of a directory that are accepted by the given FileFilter.
    
    Parameters:
    file - the file or directory to be zipped
    zos - the ZipOutputStream into which the file has to be added
    prefixLength - the size of the prefix
    filter - the filter to be used
    
    Throws:
    
    java.io.IOException - if an exception occurs
  - getZipFileStream
```
public static java.io.InputStream getZipFileStream(java.lang.String fileName,
                                   java.io.File zipFile)
```
    Returns an InputStream on the File representing by the given fileName in the given zip file. Caller must close the Stream.
    
    Parameters:
    fileName - the file name of the file to seek
    zipFile - File reprenst the zip
    
    Returns:
    InputStream an InputStream to the given file in the zip
  - getZipFileStream
```
public static java.io.InputStream getZipFileStream(java.lang.String fileName,
                                   java.io.File zipFile,
                                   boolean regexp)
```
  - deflateAndBase64EncodeString
```
public static java.lang.String deflateAndBase64EncodeString(java.lang.String str)
                                                     throws java.io.IOException
```
    Compresses (deflates) a string and Base64 encodes the result and returns it as a string.
    
    Parameters:
    str - The string to compress and encode.
    
    Returns:
    Compressed and Base64 encoded result.
    
    Throws:
    
    java.io.IOException - Will probably not happen, maybe if there is a bug in the code or we run out of memory.
  - base64DecodeAndInflateString
```
public static java.lang.String base64DecodeAndInflateString(java.lang.String str)
                                                     throws java.util.zip.DataFormatException,
                                                            java.io.UnsupportedEncodingException
```
    Inflates Base64 encoded string. Basically the reverse of deflateAndBase64EncodeFileContents, except that it does not write to a file.
    
    Parameters:
    str - String should be compressed and Base64 encoded data.
    
    Returns:
    The original string (decoded and inflated(uncompressed)).
    
    Throws:
    
    java.util.zip.DataFormatException - on bad input.
    
    java.io.UnsupportedEncodingException - if an exception occurs
  - deepDelete
```
public static void deepDelete(java.io.File file)
```
    Deletes a whole directory. Use it with care !
    
    Parameters:
    file - the directory to destroy
  - deepDelete
```
public static void deepDelete(java.io.File file,
              ActionListener listener)
```
    Deletes a whole directory. Use it with care !
    
    Parameters:
    file - the directory to destroy
    listener - a custom ActionListener used to perform custom actino during recursive calls
    Since:
    
    jcms5.7.3
  - deepDeleteEmptyDirectories
```
public static void deepDeleteEmptyDirectories(java.io.File dir)
```
    Delete recursively all enpty directories under a given directory. THe given directory will also be deleted.
    
    Parameters:
    dir - the directory to destroy
  - deepDeleteEmptyDirectories
```
public static void deepDeleteEmptyDirectories(java.io.File dir,
                              java.io.FileFilter filter)
```
    Delete recursively all enpty directories under a given directory. THe given directory will also be deleted.
    
    Parameters:
    dir - the directory to destroy
    filter - files to ignore and remove
  - deepDeleteEmptyDirectories
```
public static void deepDeleteEmptyDirectories(java.io.File dir,
                              java.io.FileFilter filter,
                              ActionListener listener)
```
    Delete recursively all enpty directories under a given directory. The given directory will also be deleted.
    
    Parameters:
    dir - the directory to destroy
    filter - FileFilter used to find files to be deleted before checking whether the directory is empty
    listener - to perform action during recursive calls
  - translateFile
```
public static java.io.File translateFile(java.io.File file,
                         java.io.File srcDir,
                         java.io.File tgtDir)
```
    Returns the translated path of a given file which belongs to a given source directory into a target directory. Example: translateFile(/a/b/c.txt, /a/, /x/y/) returns /x/y/b/c.txt
    
    Parameters:
    file - the file to translate
    srcDir - the source directory
    tgtDir - the target directory
    
    Returns:
    the translated file
    Since:
    
    jcms-4.0.2
  - searchAndReplace
```
public static void searchAndReplace(java.io.File file,
                    java.lang.String[] search,
                    java.lang.String[] replace)
```
    Execute an array of regular expression on a given file content. In this implementation search and replace arrays must fullfill String.replaceAll() requirement.
    
    Parameters:
    file - the file to parse
    search - an array of regular expression to match
    replace - ann array of regular expression to replace
  - searchAndReplace
```
public static void searchAndReplace(java.io.File file,
                    java.util.Map<java.lang.String,java.lang.String> map)
```
    Execute a map of regular expression on a given file content. In this implementation search and replace arrays must fullfill String.replaceAll() requirement.
    
    Parameters:
    file - the file to parse
    map - a map with regexp as key and substitute string as value.
  - deepCopy
```
public static void deepCopy(java.io.File srcDir,
            java.io.File tgtDir,
            boolean deleteEmptyFile,
            java.io.FileFilter filter)
                     throws java.io.IOException
```
    Perform a directory deep copy. If deleteEmptyFile is true, all the empty source files (length = 0) will be used as marker to delete the corresponding target files.
    
    Parameters:
    srcDir - the source directory to copy
    tgtDir - the target directory
    deleteEmptyFile - if true delete empty files.
    filter - the filter to be used (may be null)
    
    Throws:
    
    java.io.IOException - if it append for one file.
    Since:
    
    jcms-4.1.1
  - forceDeepCopy
```
public static void forceDeepCopy(java.io.File srcDir,
                 java.io.File tgtDir,
                 boolean deleteEmptyFile,
                 java.io.FileFilter filter)
```
    Perform a directory deep copy. If deleteEmptyFile is true, all the empty source files (length = 0) will be used as marker to delete the corresponding target files. The operation is performed for every file, even if an IOException has been thrown previously for a file.
    
    Parameters:
    srcDir - the source directory to copy
    tgtDir - the target directory
    deleteEmptyFile - if true delete empty files.
    filter - the filter to be used (may be null)
    Since:
    
    jcms-5.7.4
  - deepCopy
```
public static void deepCopy(java.io.File srcDir,
            java.io.File tgtDir,
            boolean deleteEmptyFile)
                     throws java.io.IOException
```
    Perform a directory deep copy. If deleteEmptyFile is true, all the empty source files (length = 0) will be used as marker to delete the corresponding target files.
    
    Parameters:
    srcDir - the source directory to copy
    tgtDir - the target directory
    deleteEmptyFile - if true delete empty files.
    
    Throws:
    
    java.io.IOException - if an exception occurs
    Since:
    
    jcms-4.0.2
  - deepCopy
```
public static void deepCopy(java.io.File srcDir,
            java.io.File tgtDir)
                     throws java.io.IOException
```
    Perform a directory deep copy.
    
    Parameters:
    srcDir - the source directory to copy
    tgtDir - the target directory
    
    Throws:
    
    java.io.IOException - if an exception occurs
  - isParent
```
public static boolean isParent(java.io.File parent,
               java.io.File child)
```
    Check if a File is a child of an other File recursively.
    
    Parameters:
    parent - the parent file
    child - the child file
    
    Returns:
    boolean
  - copyFile
```
public static void copyFile(java.lang.String filename1,
            java.lang.String filename2)
                     throws java.io.IOException
```
    Copy filename1 into filename2 (mkdirs for filename2)
    
    Parameters:
    filename1 - the source file
    filename2 - the target file
    
    Throws:
    
    java.io.IOException - if an exception occurs
  - copyFile
```
public static void copyFile(java.io.File f1,
            java.io.File f2)
                     throws java.io.IOException
```
    Copy f1 into f2 (mkdirs for f2)
    
    Parameters:
    f1 - the source file
    f2 - the target file
    
    Throws:
    
    java.io.IOException - if an exception occurs
  - moveFile
```
public static boolean moveFile(java.io.File f1,
               java.io.File f2)
```
    Move f1 into f2 (mkdirs for f2). Try with renameTo. If it fails (may occurs on Windows on just created temp file), calls copyFile() & delete().
    
    Parameters:
    f1 - the source file
    f2 - the target file
    
    Returns:
    true if and only if the moving succeeded; false otherwise.
    Since:
    
    jcms-4.0.2
  - emptyInputStream
```
public static byte[] emptyInputStream(java.io.DataInputStream dis)
```
    Emptys an InputStream
    
    Parameters:
    dis - the DataInputStream to empty
    
    Returns:
    the array of byte read.
  - removeBlankLines
```
public static void removeBlankLines(java.lang.String filename,
                    boolean trim)
                             throws java.io.IOException
```
    Remove all blank lines of a file. Uses UTF-8 encoding for reading and writing the file.
    
    Parameters:
    filename - the name of the file from which to remove blank lines.
    trim - If false, remove only blank lines without space (i.e. matching /^$/) otherwise remove blank lines and space lines (i.e. matching /^\s*$/).
    
    Throws:
    
    java.io.IOException - if an exception occurs
  - createTempDir
```
public static java.io.File createTempDir()
```
    Creates a new empty directory
    
    Returns:
    An abstract pathname denoting a newly-created empty directory
  - createTempDir
```
public static java.io.File createTempDir(java.lang.String name,
                         java.lang.String prefix,
                         java.io.File parentDir,
                         boolean clear)
```
    Creates a new empty directory
    
    Parameters:
    name - The name of the directory to create. If null, generate a name based on prefix and current time.
    prefix - The prefix string to be used in generating the file's name
    parentDir - The parent directory in which the directory is to be created, or null if the default temporary-file directory is to be used
    clear - if true and if this directory already exists the content is deep deleted
    
    Returns:
    An abstract pathname denoting a newly-created empty directory
    Since:
    
    jcms-4.0.2
  - getTempDir
```
public static java.io.File getTempDir(java.lang.String name,
                      java.lang.String prefix,
                      java.io.File parentDir)
```
    Returns An abstract pathname denoting an empty directory (this directory is not created).
    
    Parameters:
    name - The name of the directory to create. If null, generate a name.
    prefix - The prefix string to be used in generating the file's name
    parentDir - The parent directory in which the directory is to be created, or null if the default temporary-file directory is to be used
    
    Returns:
    An abstract pathname denoting an empty directory
    Since:
    
    jcms-4.0.2
  - canWrite
```
public static boolean canWrite(java.io.File file,
               boolean checkParent)
```
    Tests whether the application can modify to the file denoted by the given file. If file does not exists and checkParent is true, the test is extended to the parent (recursively).
    
    Parameters:
    file - the file to test
    checkParent - true if the parent must checked
    
    Returns:
    true if this file can be write
    Since:
    
    jcms-4.0.2
  - getRelativePath
```
public static java.lang.String getRelativePath(java.io.File dir,
                               java.io.File file)
```
    Return the relative path of the specified file in the specified directory.
    The returned path is platform independent :
    - "/" is used as file separator.
    - characters are encoded or escaped according to specification indicated in java class URI.
    Returns null if the specified file is not inside the given directory or any of its subdirectory.
    Examples :
```
   IOUtil.getRelativePath(new File("/foo/"), new File("/foo/bar/out.txt"));
   => "bar/out.txt"
   
   IOUtil.getRelativePath(new File("c:\\foo"), new File("c:\\foo\\bar\\out.txt"));
   => "bar/out.txt"
   
   IOUtil.getRelativePath(new File("/dir1/"), new File("/dir2/file.txt"));
   => null
   
   IOUtil.getRelativePath(new File("/foo/"), new File("/foo/bar baz/out.txt"));
   => "bar%20baz/out.txt"
 
```
    Parameters:
    dir - the directory
    file - the file
    
    Returns:
    the relative path or null if no relative path can be computed.
    Since:
    
    jcms-4.1
  - belongsToDirectory
```
public static boolean belongsToDirectory(java.io.File dir,
                         java.io.File untrustedFile)
```
    Check that the specified file belongs to the specified directory or any of its subdirectory.
    Exemple :
```
  File dir = new File("/some/directory/");
  File fileOk = new File("/some/directory/subdirectory/ok.txt");
  File fileKo = new File("/etc/passwd");
  assertTrue(IOUtil.belongsToDirectory(dir, fileOk));
  assertFalse(IOUtil.belongsToDirectory(dir, fileKo));
 
```
    Parameters:
    dir - the directory
    untrustedFile - the file to check
    
    Returns:
    true if the file is part of the directory, false otherwise
    
    Throws:
    
    java.lang.IllegalArgumentException - if any of the parameter is null
    Since:
    
    jcms-7.1
  - goToLine
```
public static boolean goToLine(java.io.InputStream in,
               long line)
                        throws java.io.IOException
```
    Move the position of the given InputStream to the given line.
    
    Parameters:
    in - the InputStream to move the position.
    line - the line to be reached
    
    Returns:
    true if the line has been reached, false otherwite (line out of file size)
    
    Throws:
    
    java.io.IOException - if an exception occurs
    Since:
    
    jcms-5.0.1
  - goToLine
```
public static boolean goToLine(java.io.RandomAccessFile raf,
               long line)
                        throws java.io.IOException
```
    Move the position of the given InputStream to the given line.
    
    Parameters:
    raf - the RandomAccessFile to move the position.
    line - the line to be reached
    
    Returns:
    true if the line has been reached, false otherwite (line out of file size)
    
    Throws:
    
    java.io.IOException - if an exception occurs
    Since:
    
    jcms-5.0.1
  - getExtension
```
public static java.lang.String getExtension(java.io.File file)
```
    Returns the extension of the given file (without the leading "." char). From JCMS 7.0.3 and 7.1, the extension is always returned in lowercase. Example: if file is foo/bar.XML it returns xml.
    
    Parameters:
    file - the file to get the extension
    
    Returns:
    the extension of the given file (in lowercase)
    Since:
    
    jcms-5.5.0
  - getExtension
```
public static java.lang.String getExtension(java.lang.String filename)
```
    Returns the extension of the given file (without the leading "." char). Example: if file is foo/bar.xml it returns xml.
    
    Parameters:
    filename - the filename to get the extension
    
    Returns:
    the extension of the given filename
    Since:
    
    jcms-5.5.0
    
    See Also:
    getExtension(File)
  - getQualifiedName
```
public static java.lang.String getQualifiedName(java.io.File file)
```
    This method return the name of a given file it return string before last '.' of the filename. ie. FileName.Ext -> FileName. Dot-files such as ".bashrc" are returned entirely.
    
    Parameters:
    file - the File of which to retrieve qualified name
    
    Returns:
    String the qualified name of the given File
    Since:
    
    jcms-5.5.0
  - getQualifiedName
```
public static java.lang.String getQualifiedName(java.lang.String filename)
```
    This method return the name of a given file name it return string before last '.' of the filename. ie. FileName.Ext -> FileName Dot-files such as ".bashrc" are returned entirely.
    
    Parameters:
    filename - the file name
    
    Returns:
    String the qualified name of the given filename
    Since:
    
    jcms-5.5.0
    
    See Also:
    getQualifiedName(File)
  - convertCharset
```
public static void convertCharset(java.io.File file,
                  java.lang.String fromCS,
                  java.lang.String toCS)
                           throws java.io.IOException
```
    Encode the given file with a given charset.
    
    Parameters:
    file - the file to be encoded
    fromCS - the original charset of the file
    toCS - the new charset of the file
    
    Throws:
    
    java.io.IOException - if an exception occurs
    Since:
    
    jcms-5.5.0
  - copy
```
public static int copy(java.io.InputStream input,
       java.io.OutputStream output)
                throws java.io.IOException
```
    Copy bytes from an InputStream to an OutputStream.
    This method buffers the input internally, so there is no need to use a BufferedInputStream.
    
    Parameters:
    input - the InputStream to read from
    output - the OutputStream to write to
    
    Returns:
    the number of bytes copied
    
    Throws:
    
    java.lang.NullPointerException - if the input or output is null
    
    java.io.IOException - if an I/O error occurs
    Since:
    
    jcms-5.5.0
  - copy
```
public static void copy(java.io.InputStream input,
        java.io.Writer output,
        java.lang.String encoding)
                 throws java.io.IOException
```
    Copy bytes from an InputStream to chars on a Writer using the specified character encoding, or UTF-8 if null.
    This method buffers the input internally, so there is no need to use a BufferedInputStream.
    Character encoding names can be found at IANA.
    This method uses InputStreamReader.
    
    Parameters:
    input - the InputStream to read from
    output - the Writer to write to
    encoding - the encoding to use, null means platform default
    
    Throws:
    
    java.lang.NullPointerException - if the input or output is null
    
    java.io.IOException - if an I/O error occurs
    Since:
    
    jcms-5.5.0
  - copy
```
public static int copy(java.io.Reader input,
       java.io.Writer output)
                throws java.io.IOException
```
    Copy chars from a Reader to a Writer.
    This method buffers the input internally, so there is no need to use a BufferedReader.
    
    Parameters:
    input - the Reader to read from
    output - the Writer to write to
    
    Returns:
    the number of characters copied
    
    Throws:
    
    java.lang.NullPointerException - if the input or output is null
    
    java.io.IOException - if an I/O error occurs
    Since:
    
    jcms-5.5.0
  - copy
```
public static void copy(java.io.Reader input,
        java.io.OutputStream output,
        java.lang.String encoding)
                 throws java.io.IOException
```
    Copy chars from a Reader to bytes on an OutputStream using the specified character encoding, and calling flush.
    This method buffers the input internally, so there is no need to use a BufferedReader.
    Character encoding names can be found at IANA.
    Due to the implementation of OutputStreamWriter, this method performs a flush.
    This method uses OutputStreamWriter.
    
    Parameters:
    input - the Reader to read from
    output - the OutputStream to write to
    encoding - the encoding to use, null means platform default
    
    Throws:
    
    java.lang.NullPointerException - if the input or output is null
    
    java.io.IOException - if an I/O error occurs
    Since:
    
    jcms-5.5.0
  - closeQuietly
```
public static void closeQuietly(java.io.Reader reader)
```
    Close the given reader. This convenient method is typically used in a finally block.
    
    Parameters:
    reader - the Reader.
    Since:
    
    jcms-5.6.0
  - closeQuietly
```
public static void closeQuietly(java.io.Writer writer)
```
    Close the given writer. This convenient method is intended to be used in a finally block.
    
    Parameters:
    writer - the Writer.
    Since:
    
    jcms-5.6.0
  - closeQuietly
```
public static void closeQuietly(java.io.InputStream inputStream)
```
    Close the given inputStream. This convenient method is intended to be used in a finally block.
    
    Parameters:
    inputStream - the InputStream.
    Since:
    
    jcms-5.6.0
  - closeQuietly
```
public static void closeQuietly(java.io.OutputStream outputStream)
```
    Close the given writer. This convenient method is intended to be used in a finally block.
    
    Parameters:
    outputStream - the OutputStream.
    Since:
    
    jcms-5.6.0
  - isSameContent
```
public static boolean isSameContent(java.io.File f1,
                    java.io.File f2)
```
    Returns true if the given files have the same content.
    
    Parameters:
    f1 - the first file to be compared
    f2 - the second file to be compared
    
    Returns:
    true if the two files have the same content.
    Since:
    
    jcms-5.7.0
  - getNewDirectory
```
public static java.lang.String getNewDirectory(java.io.File baseDir,
                               java.lang.String subDir,
                               long maxFilesPerDir)
```
    Returns the relative path of directory to use for the new document to be created. The directories are created.
    
    Parameters:
    baseDir - the base directory (eg /usr/local/tomcat/webapps/jcms/)
    subDir - an optionnal sub directory, may be null (eg upload/docs/image/gif/)
    maxFilesPerDir - how many files are allowed per directory.
    
    Returns:
    String the directory path, relative to the webapp, with the trailing slash ("/"). e.g: upload/docs/image/gif/2006/11/
    Since:
    
    jcms-5.7.0
  - tail
```
public static java.lang.String[] tail(java.io.File file,
                      int size,
                      boolean skipBlank,
                      java.lang.String encoding)
                               throws java.io.IOException
```
    Returns the last lines of a file.
    
    Parameters:
    file - the file
    size - how many lines to returns
    skipBlank - if true skip the blank lines
    encoding - the file encoding
    
    Returns:
    the last lines of a file.
    
    Throws:
    
    java.io.IOException - if an exception occurs
    Since:
    
    jcms-5.7.2
  - getDownloadTicket
```
public static java.lang.String getDownloadTicket(java.io.File file)
```
    Get a download ticket for the given file
    
    Parameters:
    file - the file to get a ticket for
    
    Returns:
    a String containing the ticket
    Since:
    
    jcms-4.1
  - downloadFile
```
public static int downloadFile(java.net.URL url,
               java.io.File file,
               long lastModified,
               java.lang.String ticket)
```
    Download the given URL
    
    Parameters:
    url - the URL to download
    file - the target file
    lastModified - if > 0, the last lastModified date of the file will be set to this value
    ticket - the ticket to be used for the download
    
    Returns:
    the status code
    Since:
    
    jcms-4.1
  - openConnection
```
public static java.net.HttpURLConnection openConnection(java.net.URL url,
                                        boolean doOutput,
                                        boolean doInput,
                                        java.lang.String method)
                                                 throws java.io.IOException
```
    Open a new HttpURLConnection for the specified url
    
    Parameters:
    url - the URL for which HttpURLConnection is opened
    doOutput - see URLConnection.setDoOutput(boolean)
    doInput - see URLConnection.setDoInput(boolean)
    method - see HttpURLConnection.setRequestMethod(String)
    
    Returns:
    a new instance of HttpURLConnection
    
    Throws:
    
    java.io.IOException - if an exception occurs
    Since:
    
    jcms-4.1
  - getInputStream
```
public static java.io.InputStream getInputStream(java.net.HttpURLConnection httpConn)
                                          throws java.io.IOException
```
    Retrieve the input stream of the specified HttpURLConnection, decoded appropriately if gzip was used.
    
    Parameters:
    httpConn - the HttpUrlConnection being used
    
    Returns:
    a input stream
    
    Throws:
    
    java.io.IOException - if an exception occurs
    Since:
    
    jcms-4.1
  - checkFileSizeAndMtime
```
public static boolean checkFileSizeAndMtime(java.io.File file,
                            long size,
                            long mtime)
```
    Returns true if the given file exists and has the given size and the given mtime.
    
    Parameters:
    file - the file
    size - the excepted size
    mtime - the expected mtime
    
    Returns:
    true if the given file exists and has the given size and the given mtime.
    Since:
    
    jcms-5.7.2
  - getMimeTypeFromMagicNumber
```
public static java.lang.String getMimeTypeFromMagicNumber(java.io.File file)
```
    Gives the mime type of a file. Licence concern : This method is based upon Aperture MagicMimeTypeIdentifier. The code was modified at the margin to be compatible with JRE 1.4.2. Given the licence of Aperture : Open Software Licence (OSL), this modified code of Aperture classes are held at the disposal on demand at support@jalios.com Concerned classes : UtfUtil MagicNumber MagicMimeTypeIdentifier MagicString MagicNumber
    
    Parameters:
    file - the file to test
    
    Returns:
    the mime type of the file or null if not found
    Since:
    
    JCMS-5.7.3

Class IOUtil

Field Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

REVISION

DOWNLOAD_ERROR

DOWNLOAD_OK

patternBlank1

patternBlank2

MIMETYPE_PLAINTEXT

Method Detail

readList

deepListFiles

deepListFiles

deepListFiles

substringFile

writeArray

writeEnumeration

writeIterator

unzip

unzip

unzip

unzip

unzip

unzip

zip

zip

zip

zip

zipWriter

getZipFileStream

getZipFileStream

deflateAndBase64EncodeString

base64DecodeAndInflateString

deepDelete

deepDelete

deepDeleteEmptyDirectories

deepDeleteEmptyDirectories

deepDeleteEmptyDirectories

translateFile

searchAndReplace

searchAndReplace

deepCopy

forceDeepCopy

deepCopy

deepCopy

isParent

copyFile

copyFile

moveFile

emptyInputStream

removeBlankLines

createTempDir

createTempDir

getTempDir

canWrite

getRelativePath

belongsToDirectory

goToLine

goToLine

getExtension

getExtension

getQualifiedName

getQualifiedName

convertCharset

copy

copy

copy

copy

closeQuietly

closeQuietly

closeQuietly

closeQuietly

isSameContent

getNewDirectory

tail

getDownloadTicket

downloadFile

openConnection