CmsFileUtil (opencms-core 9.0.0 API)

java.lang.Object
- org.opencms.util.CmsFileUtil

public final class CmsFileUtil
extends java.lang.Object

Provides File utility functions.

Since:: 6.0.0

Nested Class Summary

Nested Classes
Modifier and Type Class and Description

static class CmsFileUtil.FileWalkState
Data bean which walkFileSystem passes to its callback.

Nested Classes
Modifier and Type	Class and Description
`static class`	`CmsFileUtil.FileWalkState` Data bean which walkFileSystem passes to its callback.

Method Summary

Methods
Modifier and Type	Method and Description
`static java.lang.String`	`addTrailingSeparator(java.lang.String path)` Adds a trailing separator to a path if required.
`static void`	`checkResources(CmsObject cms, java.util.List<java.lang.String> resources)` Checks if all resources are present.
`static void`	`copy(java.lang.String fromFile, java.lang.String toFile)` Simply version of a 1:1 binary file copy.
`static java.lang.String`	`formatFilesize(long filesize, java.util.Locale locale)` Returns the formatted filesize to Bytes, KB, MB or GB depending on the given value.
`static java.lang.String`	`formatResourceNames(CmsRequestContext context, java.util.List<CmsResource> resources)` Returns a comma separated list of resource paths names, with the site root from the given OpenCms user context removed.
`static java.lang.String`	`getExtension(java.lang.String resourceName)` Returns the extension of the given resource name, that is the part behind the last '.' char, converted to lower case letters.
`static java.lang.String`	`getFileExtension(java.lang.String filename)` Deprecated. use `getExtension(String)` instead, it is better implemented
`static java.util.List<java.io.File>`	`getFiles(java.lang.String name, java.io.FileFilter filter, boolean includeSubtree)` Returns a list of all filtered files in the RFS.
`static java.lang.String`	`getRepositoryName(java.lang.String repository, java.lang.String vfspath, boolean online)` Returns the file name for a given VFS name that has to be written to a repository in the "real" file system, by appending the VFS root path to the given base repository path, also adding an folder for the "online" or "offline" project.
`static java.lang.String`	`getRfsPath(java.lang.String filename, java.lang.String extension, java.lang.String parameters)` Creates unique, valid RFS name for the given filename that contains a coded version of the given parameters, with the given file extension appended.
`static java.lang.String`	`normalizePath(java.lang.String path)` Normalizes a file path that might contain `'..`
`static java.lang.String`	`normalizePath(java.lang.String path, char separatorChar)` Normalizes a file path that might contain `'..`
`static java.lang.String`	`normalizePath(java.net.URL url)` Returns the normalized file path created from the given URL.
`static java.lang.String`	`normalizePath(java.net.URL url, char separatorChar)` Returns the normalized file path created from the given URL.
`static void`	`purgeDirectory(java.io.File directory)` Deletes a directory in the file system and all subfolders of that directory.
`static byte[]`	`readFile(java.io.File file)` Reads a file from the RFS and returns the file content.
`static byte[]`	`readFile(java.lang.String filename)` Reads a file with the given name from the class loader and returns the file content.
`static java.lang.String`	`readFile(java.lang.String filename, java.lang.String encoding)` Reads a file from the class loader and converts it to a String with the specified encoding.
`static byte[]`	`readFully(java.io.InputStream in)` Reads all bytes from the given input stream, closes it and returns the result in an array.
`static byte[]`	`readFully(java.io.InputStream in, boolean closeInputStream)` Reads all bytes from the given input stream, conditionally closes the given input stream and returns the result in an array.
`static byte[]`	`readFully(java.io.InputStream in, int size)` Reads the specified number of bytes from the given input stream and returns the result in an array.
`static byte[]`	`readFully(java.io.InputStream in, int size, boolean closeStream)` Reads the specified number of bytes from the given input stream, conditionally closes the stream and returns the result in an array.
`static java.util.List<java.lang.String>`	`removeRedundancies(java.util.List<java.lang.String> resourcenames)` Removes all resource names in the given List that are "redundant" because the parent folder name is also contained in the List.
`static java.util.List<CmsResource>`	`removeRedundantResources(java.util.List<CmsResource> resources)` Removes all resources in the given List that are "redundant" because the parent folder is also contained in the List.
`static java.lang.String`	`removeTrailingSeparator(java.lang.String path)` Removes a trailing separator from a path if required.
`static java.lang.String`	`searchWebInfFolder(java.lang.String startFolder)` Searches for the OpenCms web application 'WEB-INF' folder during system startup, code or `null` if the 'WEB-INF' folder can not be found.
`static void`	`walkFileSystem(java.io.File base, org.apache.commons.collections.Closure action)` Traverses the file system starting from a base folder and executes a callback for every directory found.

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

- Method Detail
  - addTrailingSeparator
```
public static java.lang.String addTrailingSeparator(java.lang.String path)
```
    Adds a trailing separator to a path if required.
    
    Parameters:
    path - the path to add the trailing separator to
    
    Returns:
    the path with a trailing separator
  - checkResources
```
public static void checkResources(CmsObject cms,
                  java.util.List<java.lang.String> resources)
                           throws CmsIllegalArgumentException
```
    Checks if all resources are present.
    
    Parameters:
    cms - an initialized OpenCms user context which must have read access to all resources
    resources - a list of vfs resource names to check
    
    Throws:
    
    CmsIllegalArgumentException - in case not all resources exist or can be read with the given OpenCms user context
  - copy
```
public static void copy(java.lang.String fromFile,
        java.lang.String toFile)
                 throws java.io.IOException
```
    Simply version of a 1:1 binary file copy.
    
    Parameters:
    fromFile - the name of the file to copy
    toFile - the name of the target file
    
    Throws:
    
    java.io.IOException - if any IO error occurs during the copy operation
  - formatFilesize
```
public static java.lang.String formatFilesize(long filesize,
                              java.util.Locale locale)
```
    Returns the formatted filesize to Bytes, KB, MB or GB depending on the given value.
    
    Parameters:
    filesize - in bytes
    locale - the locale of the current OpenCms user or the System's default locale if the first choice is not at hand.
    
    Returns:
    the formatted filesize to Bytes, KB, MB or GB depending on the given value
  - formatResourceNames
```
public static java.lang.String formatResourceNames(CmsRequestContext context,
                                   java.util.List<CmsResource> resources)
```
    Returns a comma separated list of resource paths names, with the site root from the given OpenCms user context removed.
    
    Parameters:
    context - the current users OpenCms context (optional, may be null)
    resources - a List of CmsResource instances to get the names from
    
    Returns:
    a comma separated list of resource paths names
  - getExtension
```
public static java.lang.String getExtension(java.lang.String resourceName)
```
    Returns the extension of the given resource name, that is the part behind the last '.' char, converted to lower case letters.
    The extension of a file is the part of the name after the last dot, including the dot. The extension of a folder is empty. All extensions are returned as lower case
    Please note: No check is performed to ensure the given file name is not null.
    Examples:
    - /folder.test/ has an empty extension.
    - /folder.test/config has an empty extension.
    - /strange.filename. has an empty extension.
    - /document.PDF has the extension .pdf.
    Parameters:
    resourceName - the resource to get the extension for
    
    Returns:
    the extension of a resource
  - getFileExtension
```
@Deprecated
public static java.lang.String getFileExtension(java.lang.String filename)
```
    Deprecated. use getExtension(String) instead, it is better implemented
    
    Returns the extension of the given file name, that is the part behind the last '.' char, converted to lower case letters.
    The result does contain the '.' char. For example, if the input is "opencms.html", then the result will be ".html".
    If the given file name does not contain a '.' char, the empty String "" is returned.
    Please note: No check is performed to ensure the given file name is not null.
    
    Parameters:
    filename - the file name to get the extension for
    
    Returns:
    the extension of the given file name
  - getFiles
```
public static java.util.List<java.io.File> getFiles(java.lang.String name,
                                    java.io.FileFilter filter,
                                    boolean includeSubtree)
```
    Returns a list of all filtered files in the RFS.
    If the name is not a folder the folder that contains the given file will be used instead.
    Despite the filter may not accept folders, every subfolder is traversed if the includeSubtree parameter is set.
    
    Parameters:
    name - a folder or file name
    filter - a filter
    includeSubtree - if to include subfolders
    
    Returns:
    a list of filtered File objects
  - getRepositoryName
```
public static java.lang.String getRepositoryName(java.lang.String repository,
                                 java.lang.String vfspath,
                                 boolean online)
```
    Returns the file name for a given VFS name that has to be written to a repository in the "real" file system, by appending the VFS root path to the given base repository path, also adding an folder for the "online" or "offline" project.
    
    Parameters:
    repository - the base repository path
    vfspath - the VFS root path to write to use
    online - flag indicates if the result should be used for the online project (true) or not
    
    Returns:
    The full uri to the JSP
  - getRfsPath
```
public static java.lang.String getRfsPath(java.lang.String filename,
                          java.lang.String extension,
                          java.lang.String parameters)
```
    Creates unique, valid RFS name for the given filename that contains a coded version of the given parameters, with the given file extension appended.
    This is used to create file names for the static export, or in a vfs disk cache.
    
    Parameters:
    filename - the base file name
    extension - the extension to use
    parameters - the parameters to code in the result file name
    
    Returns:
    a unique, valid RFS name for the given parameters
    See Also:
    CmsStaticExportManager
  - normalizePath
```
public static java.lang.String normalizePath(java.lang.String path)
```
    Normalizes a file path that might contain '../' or './' or '//' elements to a normal absolute path, the path separator char used is File.separatorChar.
    
    Parameters:
    path - the path to normalize
    
    Returns:
    the normalized path
    See Also:
    normalizePath(String, char)
  - normalizePath
```
public static java.lang.String normalizePath(java.lang.String path,
                             char separatorChar)
```
    Normalizes a file path that might contain '../' or './' or '//' elements to a normal absolute path.
    Can also handle Windows like path information containing a drive letter, like C:\path\..\.
    
    Parameters:
    path - the path to normalize
    separatorChar - the file separator char to use, for example File.separatorChar
    
    Returns:
    the normalized path
  - normalizePath
```
public static java.lang.String normalizePath(java.net.URL url)
```
    Returns the normalized file path created from the given URL.
    The path part URL.getPath() is used, unescaped and normalized using normalizePath(String, char) using File.separatorChar.
    
    Parameters:
    url - the URL to extract the path information from
    
    Returns:
    the normalized file path created from the given URL using File.separatorChar
    See Also:
    normalizePath(URL, char)
  - normalizePath
```
public static java.lang.String normalizePath(java.net.URL url,
                             char separatorChar)
```
    Returns the normalized file path created from the given URL.
    The path part URL.getPath() is used, unescaped and normalized using normalizePath(String, char).
    
    Parameters:
    url - the URL to extract the path information from
    separatorChar - the file separator char to use, for example File.separatorChar
    
    Returns:
    the normalized file path created from the given URL
  - purgeDirectory
```
public static void purgeDirectory(java.io.File directory)
```
    Deletes a directory in the file system and all subfolders of that directory.
    
    Parameters:
    directory - the directory to delete
  - readFile
```
public static byte[] readFile(java.io.File file)
                       throws java.io.IOException
```
    Reads a file from the RFS and returns the file content.
    
    Parameters:
    file - the file to read
    
    Returns:
    the read file content
    
    Throws:
    
    java.io.IOException - in case of file access errors
  - readFile
```
public static byte[] readFile(java.lang.String filename)
                       throws java.io.IOException
```
    Reads a file with the given name from the class loader and returns the file content.
    
    Parameters:
    filename - the file to read
    
    Returns:
    the read file content
    
    Throws:
    
    java.io.IOException - in case of file access errors
  - readFile
```
public static java.lang.String readFile(java.lang.String filename,
                        java.lang.String encoding)
                                 throws java.io.IOException
```
    Reads a file from the class loader and converts it to a String with the specified encoding.
    
    Parameters:
    filename - the file to read
    encoding - the encoding to use when converting the file content to a String
    
    Returns:
    the read file convered to a String
    
    Throws:
    
    java.io.IOException - in case of file access errors
  - readFully
```
public static byte[] readFully(java.io.InputStream in)
                        throws java.io.IOException
```
    Reads all bytes from the given input stream, closes it and returns the result in an array.
    
    Parameters:
    in - the input stream to read the bytes from
    
    Returns:
    the byte content of the input stream
    
    Throws:
    
    java.io.IOException - in case of errors in the underlying java.io methods used
  - readFully
```
public static byte[] readFully(java.io.InputStream in,
               boolean closeInputStream)
                        throws java.io.IOException
```
    Reads all bytes from the given input stream, conditionally closes the given input stream and returns the result in an array.
    
    Parameters:
    in - the input stream to read the bytes from
    closeInputStream - if true the given stream will be closed afterwards
    
    Returns:
    the byte content of the input stream
    
    Throws:
    
    java.io.IOException - in case of errors in the underlying java.io methods used
  - readFully
```
public static byte[] readFully(java.io.InputStream in,
               int size)
                        throws java.io.IOException
```
    Reads the specified number of bytes from the given input stream and returns the result in an array.
    
    Parameters:
    in - the input stream to read the bytes from
    size - the number of bytes to read
    
    Returns:
    the byte content read from the input stream
    
    Throws:
    
    java.io.IOException - in case of errors in the underlying java.io methods used
  - readFully
```
public static byte[] readFully(java.io.InputStream in,
               int size,
               boolean closeStream)
                        throws java.io.IOException
```
    Reads the specified number of bytes from the given input stream, conditionally closes the stream and returns the result in an array.
    
    Parameters:
    in - the input stream to read the bytes from
    size - the number of bytes to read
    closeStream - if true the given stream will be closed
    
    Returns:
    the byte content read from the input stream
    
    Throws:
    
    java.io.IOException - in case of errors in the underlying java.io methods used
  - removeRedundancies
```
public static java.util.List<java.lang.String> removeRedundancies(java.util.List<java.lang.String> resourcenames)
```
    Removes all resource names in the given List that are "redundant" because the parent folder name is also contained in the List.
    The content of the input list is not modified.
    
    Parameters:
    resourcenames - a list of VFS pathnames to check for redundencies (Strings)
    
    Returns:
    a new list with all redundancies removed
    See Also:
    removeRedundantResources(List)
  - removeRedundantResources
```
public static java.util.List<CmsResource> removeRedundantResources(java.util.List<CmsResource> resources)
```
    Removes all resources in the given List that are "redundant" because the parent folder is also contained in the List.
    The content of the input list is not modified.
    
    Parameters:
    resources - a list of CmsResource objects to check for redundancies
    
    Returns:
    a the given list with all redundancies removed
    See Also:
    removeRedundancies(List)
  - removeTrailingSeparator
```
public static java.lang.String removeTrailingSeparator(java.lang.String path)
```
    Removes a trailing separator from a path if required.
    In case we have the root folder "/", the separator is not removed.
    
    Parameters:
    path - the path to remove the trailing separator from
    
    Returns:
    the path without a trailing separator
  - searchWebInfFolder
```
public static java.lang.String searchWebInfFolder(java.lang.String startFolder)
```
    Searches for the OpenCms web application 'WEB-INF' folder during system startup, code or null if the 'WEB-INF' folder can not be found.
    
    Parameters:
    startFolder - the folder where to start searching
    
    Returns:
    String the path of the 'WEB-INF' folder in the 'real' file system, or null
  - walkFileSystem
```
public static void walkFileSystem(java.io.File base,
                  org.apache.commons.collections.Closure action)
```
    Traverses the file system starting from a base folder and executes a callback for every directory found.
    
    Parameters:
    base - the base folder
    action - a callback which will be passed a FileWalkState object for every directory encountered

Class CmsFileUtil

Nested Class Summary

Method Summary

Methods inherited from class java.lang.Object

Method Detail

addTrailingSeparator

checkResources

copy

formatFilesize

formatResourceNames

getExtension

getFileExtension

getFiles

getRepositoryName

getRfsPath

normalizePath

normalizePath

normalizePath

normalizePath

purgeDirectory

readFile

readFile

readFile

readFully

readFully

readFully

readFully

removeRedundancies

removeRedundantResources

removeTrailingSeparator

searchWebInfFolder

walkFileSystem