# system/io/FileSystem.php

This is an abstract class for platform specific filesystem implementations you have to implement each method in the platform specific filesystem implementation classes Your local filesytem implementation must extend this class.

You should also use this class as a template to write your local implementation Some native PHP filesystem specific methods are abstracted here as well. Anyway you must always use this methods via a PhingFile object (that by nature uses the *FileSystem drivers to access the real filesystem via this class using natives.

FIXME: - Error handling reduced to min fallthrough runtime exceptions more precise errorhandling is done by the PhingFile class

Author
  Charlie Killian
Author
  Hans Lellelid
Package
  phing.system.io
Version
  $Revision: 1260 $

## \FileSystem
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Package: phing\system\io

This is an abstract class for platform specific filesystem implementations you have to implement each method in the platform specific filesystem implementation classes Your local filesytem implementation must extend this class.

You should also use this class as a template to write your local implementation Some native PHP filesystem specific methods are abstracted here as well. Anyway you must always use this methods via a PhingFile object (that by nature uses the *FileSystem drivers to access the real filesystem via this class using natives.

FIXME: - Error handling reduced to min fallthrough runtime exceptions more precise errorhandling is done by the PhingFile class

Children
  \Win32FileSystem
  \UnixFileSystem
Author
  Charlie Killian
Author
  Hans Lellelid
Version
  $Revision: 1260 $

### Constants

`int BA_EXISTS = 0x01`

  int

`int BA_REGULAR = 0x02`

  int

`int BA_DIRECTORY = 0x04`

  int

`int BA_HIDDEN = 0x08`

  int

### Properties

`\FileSystem $fs= ''`
static

Instance for getFileSystem() method.

Details

Type
  \FileSystem

### Methods

`canDelete( \PhingFile $f ) : boolean`

Whether file can be deleted.

Parameters

Name | Type | Description
--- | --- | ---
$f | \PhingFile |

Returns

Type | Description
--- | ---
boolean |

`canonicalize( string $strPath ) : mixed`

canonicalize filename by checking on disk

Parameters

Name | Type | Description
--- | --- | ---
$strPath | string |

Returns

Type | Description
--- | ---
mixed | Canonical path or false if the file doesn't exist.

`checkAccess( \PhingFile $f, boolean $write = false ) : void`

Check whether the file or directory denoted by the given abstract pathname may be accessed by this process. If the second argument is false, then a check for read access is made; if the second argument is true, then a check for write (not read-write) access is made. Return false if access is denied or an I/O error occurs.

Parameters

Name | Type | Description
--- | --- | ---
$f | \PhingFile |
$write | boolean |

`chgrp( string $pathname, string $group ) : void`

Change the group on a file or directory.

Parameters

Name | Type | Description
--- | --- | ---
$pathname | string | Path and name of file or directory.
$group | string | The group of the file or directory. See http://us.php.net/chgrp

Throws

Exception | Description
--- | ---
\IOException | if operation failed.

`chmod( string $pathname, int $mode ) : void`

Change the permissions on a file or directory.

Parameters

Name | Type | Description
--- | --- | ---
$pathname | string | Path and name of file or directory.
$mode | int | The mode (permissions) of the file or directory. If using octal add leading 0. eg. 0777. Mode is affected by the umask system setting.

Throws

Exception | Description
--- | ---
\IOException | if operation failed.

`chown( string $pathname, string $user ) : void`

Change the ownership on a file or directory.

Parameters

Name | Type | Description
--- | --- | ---
$pathname | string | Path and name of file or directory.
$user | string | The user name or number of the file or directory. See http://us.php.net/chown

Throws

Exception | Description
--- | ---
\Exception | if operation failed.

`compare( \PhingFile $f1, \PhingFile $f2 ) : void`

Compare two abstract pathnames lexicographically.

Parameters

Name | Type | Description
--- | --- | ---
$f1 | \PhingFile |
$f2 | \PhingFile |

`compareMTimes( \file1 $file1, \file2 $file2 ) : \Int.`

Compare the modified time of two files.

Parameters

Name | Type | Description
--- | --- | ---
$file1 | \file1 | String. Path and name of file1.
$file2 | \file2 | String. Path and name of file2.

Returns

Type | Description
--- | ---
\Int. | 1 if file1 is newer. -1 if file2 is newer. 0 if files have the same time. Err object on failure.

Throws

Exception | Description
--- | ---
\Exception | - if cannot get modified time of either file.

`copy( \PhingFile $src, \PhingFile $dest ) : void`

Copy a file.

Parameters

Name | Type | Description
--- | --- | ---
$src | \PhingFile | Source path and name file to copy.
$dest | \PhingFile | Destination path and name of new file.

Throws

Exception | Description
--- | ---
\IOException | if file cannot be copied.

`copyr( string $source, string $dest ) : bool`

Copy a file, or recursively copy a folder and its contents

Parameters

Name | Type | Description
--- | --- | ---
$source | string | Source path
$dest | string | Destination path

Returns

Type | Description
--- | ---
bool | Returns TRUE on success, FALSE on failure

Details

Author
  Aidan Lister
Link
  http://aidanlister.com/repos/v/function.copyr.php
Version
  1.0.1

`createDirectory( \PhingFile $f, int $mode = 0755 ) : boolean`

Create a new directory denoted by the given abstract pathname, returning true if and only if the operation succeeds.

NOTE: umask() is reset to 0 while executing mkdir(), and restored afterwards

Parameters

Name | Type | Description
--- | --- | ---
$f | \PhingFile |
$mode | int |

Returns

Type | Description
--- | ---
boolean |

`createNewFile( string $strPathname ) : boolean`

Create a new empty file with the given pathname. Return true if the file was created and false if a file or directory with the given pathname already exists. Throw an IOException if an I/O error occurs.

Parameters

Name | Type | Description
--- | --- | ---
$strPathname | string | Path of the file to be created.

Returns

Type | Description
--- | ---
boolean |

Throws

Exception | Description
--- | ---
\IOException |

`delete( \PhingFile $f, boolean $recursive = false ) : void`

Delete the file or directory denoted by the given abstract pathname, returning true if and only if the operation succeeds.

Parameters

Name | Type | Description
--- | --- | ---
$f | \PhingFile |
$recursive | boolean |

`deleteOnExit( \PhingFile $f ) : void`

Arrange for the file or directory denoted by the given abstract pathname to be deleted when Phing::shutdown is called, returning true if and only if the operation succeeds.

Parameters

Name | Type | Description
--- | --- | ---
$f | \PhingFile |

Throws

Exception | Description
--- | ---
\IOException |

`fromURIPath( string $path ) : void`
abstract

Post-process the given URI path string if necessary. This is used on win32, e.g., to transform "/c:/foo" into "c:/foo". The path string still has slash separators; code in the PhingFile class will translate them after this method returns.

Parameters

Name | Type | Description
--- | --- | ---
$path | string |

`getBooleanAttributes( \PhingFile $f ) : void`

Return the simple boolean attributes for the file or directory denoted by the given abstract pathname, or zero if it does not exist or some other I/O error occurs.

Parameters

Name | Type | Description
--- | --- | ---
$f | \PhingFile |

`getDefaultParent( ) : void`
abstract

Return the parent pathname string to be used when the parent-directory argument in one of the two-argument PhingFile constructors is the empty pathname.

`getFileSystem( ) : \FileSystem`
static

Static method to return the FileSystem singelton representing this platform's local filesystem driver.

Returns

Type | Description
--- | ---
\FileSystem |

Throws

Exception | Description
--- | ---
\IOException |

`getLastModifiedTime( \PhingFile $f ) : int`

Return the time at which the file or directory denoted by the given abstract pathname was last modified, or zero if it does not exist or some other I/O error occurs.

Parameters

Name | Type | Description
--- | --- | ---
$f | \PhingFile |

Returns

Type | Description
--- | ---
int |

Throws

Exception | Description
--- | ---
\IOException |

`getLength( \PhingFile $f ) : int`

Return the length in bytes of the file denoted by the given abstract pathname, or zero if it does not exist, is a directory, or some other I/O error occurs.

Parameters

Name | Type | Description
--- | --- | ---
$f | \PhingFile |

Returns

Type | Description
--- | ---
int |

Throws

Exception | Description
--- | ---
\IOException |

`getPathSeparator( ) : void`
abstract

Return the local filesystem's path-separator character.

`getSeparator( ) : void`
abstract

Return the local filesystem's name-separator character.

`isAbsolute( \PhingFile $f ) : void`
abstract

Tell whether or not the given abstract pathname is absolute.

Parameters

Name | Type | Description
--- | --- | ---
$f | \PhingFile |

`listDir( \PhingFile $f ) : void`

List the elements of the directory denoted by the given abstract pathname. Return an array of strings naming the elements of the directory if successful; otherwise, return `null`.

Parameters

Name | Type | Description
--- | --- | ---
$f | \PhingFile |

`listRoots( ) : void`

List the available filesystem roots, return array of PhingFile objects

Throws

Exception | Description
--- | ---
\IOException |

`lock( \PhingFile $f ) : void`

Locks a file and throws an Exception if this is not possible.

Parameters

Name | Type | Description
--- | --- | ---
$f | \PhingFile |

Throws

Exception | Description
--- | ---
\Exception |

`normalize( string $strPath ) : void`
abstract

Convert the given pathname string to normal form. If the string is already in normal form then it is simply returned.

Parameters

Name | Type | Description
--- | --- | ---
$strPath | string |

`prefixLength( string $pathname ) : void`
abstract

Compute the length of this pathname string's prefix. The pathname string must be in normal form.

Parameters

Name | Type | Description
--- | --- | ---
$pathname | string |

`rename( \PhingFile $f1, \PhingFile $f2 ) : void`

Rename the file or directory denoted by the first abstract pathname to the second abstract pathname, returning true if and only if the operation succeeds.

Parameters

Name | Type | Description
--- | --- | ---
$f1 | \PhingFile | abstract source file
$f2 | \PhingFile | abstract destination file

Throws

Exception | Description
--- | ---
\IOException | if rename cannot be performed

`resolve( string $parent, string $child ) : void`
abstract

Resolve the child pathname string against the parent.

Both strings must be in normal form, and the result will be a string in normal form.

Parameters

Name | Type | Description
--- | --- | ---
$parent | string |
$child | string |

`resolveFile( \PhingFile $f ) : void`
abstract

Resolve the given abstract pathname into absolute form. Invoked by the getAbsolutePath and getCanonicalPath methods in the PhingFile class.

Parameters

Name | Type | Description
--- | --- | ---
$f | \PhingFile |

`rmdir( \dir $dir, \children $children = false ) : void`

Delete an empty directory OR a directory and all of its contents.

Parameters

Name | Type | Description
--- | --- | ---
$dir | \dir | String. Path and/or name of directory to delete.
$children | \children | Boolean. False: don't delete directory contents. True: delete directory contents.

`setLastModifiedTime( \PhingFile $f, int $time ) : void`

Set the last-modified time of the file or directory denoted by the given abstract pathname returning true if and only if the operation succeeds.

Parameters

Name | Type | Description
--- | --- | ---
$f | \PhingFile |
$time | int |

Throws

Exception | Description
--- | ---
\IOException |

`setReadOnly( \PhingFile $f ) : void`

Mark the file or directory denoted by the given abstract pathname as read-only, returning `true` if and only if the operation succeeds.

Parameters

Name | Type | Description
--- | --- | ---
$f | \PhingFile |

Throws

Exception | Description
--- | ---
\IOException |

`symlink( string $target, string $link ) : void`

Symbolically link a file to another name.

Currently symlink is not implemented on Windows. Don't use if the application is to be portable.

Parameters

Name | Type | Description
--- | --- | ---
$target | string | Path and/or name of file to link.
$link | string | Path and/or name of link to be created.

`touch( string $file, int $time = null ) : void`

Set the modification and access time on a file to the present time.

Parameters

Name | Type | Description
--- | --- | ---
$file | string | Path and/or name of file to touch.
$time | int |

`umask( \mode $mode ) : void`

Set the umask for file and directory creation.

Parameters

Name | Type | Description
--- | --- | ---
$mode | \mode | Int. Permissions ususally in ocatal. Use leading 0 for octal. Number between 0 and 0777.

Throws

Exception | Description
--- | ---
\Exception | if there is an error performing operation.

`unlink( string $file ) : void`

Delete a file.

Parameters

Name | Type | Description
--- | --- | ---
$file | string | Path and/or name of file to delete.

Throws

Exception | Description
--- | ---
\IOException | - if an error is encountered.

`unlock( \PhingFile $f ) : void`

Unlocks a file and throws an IO Error if this is not possible.

Parameters

Name | Type | Description
--- | --- | ---
$f | \PhingFile |

Throws

Exception | Description
--- | ---
\IOException |

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