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juce::File Class Referencefinal

`#include <juce_File.h>`

## Classes

struct | NaturalFileComparator

## Public Types

enum | TypesOfFileToFind { findDirectories = 1 , findFiles = 2 , findFilesAndDirectories = 3 , ignoreHiddenFiles = 4 }
enum class | FollowSymlinks { no , noCycles , yes }
enum | SpecialLocationType { userHomeDirectory , userDocumentsDirectory , userDesktopDirectory , userMusicDirectory , userMoviesDirectory , userPicturesDirectory , userApplicationDataDirectory , commonApplicationDataDirectory , commonDocumentsDirectory , tempDirectory , currentExecutableFile , currentApplicationFile , invokedExecutableFile , hostApplicationPath , globalApplicationsDirectory }

## Public Member Functions

| File ()=default
| File (const String &absolutePath)
| File (const File &)
| ~File ()=default
File & | operator= (const String &newAbsolutePath)
File & | operator= (const File &otherFile)
| File (File &&) noexcept
File & | operator= (File &&) noexcept
bool | exists () const
bool | existsAsFile () const
bool | isDirectory () const
bool | isRoot () const
int64 | getSize () const
const String & | getFullPathName () const noexcept
String | getFileName () const
String | getRelativePathFrom (const File &directoryToBeRelativeTo) const
String | getFileExtension () const
bool | hasFileExtension (StringRef extensionToTest) const
File | withFileExtension (StringRef newExtension) const
String | getFileNameWithoutExtension () const
int | hashCode () const
int64 | hashCode64 () const
File | getChildFile (StringRef relativeOrAbsolutePath) const
File | getSiblingFile (StringRef siblingFileName) const
File | getParentDirectory () const
bool | isAChildOf (const File &potentialParentDirectory) const
File | getNonexistentChildFile (const String &prefix, const String &suffix, bool putNumbersInBrackets=true) const
File | getNonexistentSibling (bool putNumbersInBrackets=true) const
bool | operator== (const File &) const
bool | operator!= (const File &) const
bool | operator< (const File &) const
bool | operator> (const File &) const
bool | hasWriteAccess () const
bool | hasReadAccess () const
bool | setReadOnly (bool shouldBeReadOnly, bool applyRecursively=false) const
bool | setExecutePermission (bool shouldBeExecutable) const
bool | isHidden () const
uint64 | getFileIdentifier () const
Time | getLastModificationTime () const
Time | getLastAccessTime () const
Time | getCreationTime () const
bool | setLastModificationTime (Time newTime) const
bool | setLastAccessTime (Time newTime) const
bool | setCreationTime (Time newTime) const
String | getVersion () const
Result | create () const
Result | createDirectory () const
bool | deleteFile () const
bool | deleteRecursively (bool followSymlinks=false) const
bool | moveToTrash () const
bool | moveFileTo (const File &targetLocation) const
bool | copyFileTo (const File &targetLocation) const
bool | replaceFileIn (const File &targetLocation) const
bool | copyDirectoryTo (const File &newDirectory) const
Array< File > | findChildFiles (int whatToLookFor, bool searchRecursively, const String &wildCardPattern="*", FollowSymlinks followSymlinks=FollowSymlinks::yes) const
int | findChildFiles (Array< File > &results, int whatToLookFor, bool searchRecursively, const String &wildCardPattern="*", FollowSymlinks followSymlinks=FollowSymlinks::yes) const
int | getNumberOfChildFiles (int whatToLookFor, const String &wildCardPattern="*") const
bool | containsSubDirectories () const
std::unique_ptr< FileInputStream > | createInputStream () const
std::unique_ptr< FileOutputStream > | createOutputStream (size_t bufferSize=0x8000) const
bool | loadFileAsData (MemoryBlock &result) const
String | loadFileAsString () const
void | readLines (StringArray &destLines) const
bool | appendData (const void *dataToAppend, size_t numberOfBytes) const
bool | replaceWithData (const void *dataToWrite, size_t numberOfBytes) const
bool | appendText (const String &textToAppend, bool asUnicode=false, bool writeUnicodeHeaderBytes=false, const char *lineEndings="\r\n") const
bool | replaceWithText (const String &textToWrite, bool asUnicode=false, bool writeUnicodeHeaderBytes=false, const char *lineEndings="\r\n") const
bool | hasIdenticalContentTo (const File &other) const
String | getVolumeLabel () const
int | getVolumeSerialNumber () const
int64 | getBytesFreeOnVolume () const
int64 | getVolumeTotalSize () const
bool | isOnCDRomDrive () const
bool | isOnHardDisk () const
bool | isOnRemovableDrive () const
bool | startAsProcess (const String &parameters=String()) const
void | revealToUser () const
bool | setAsCurrentWorkingDirectory () const
bool | createSymbolicLink (const File &linkFileToCreate, bool overwriteExisting) const
bool | isSymbolicLink () const
File | getLinkedTarget () const
String | getNativeLinkedTarget () const

## Static Public Member Functions

static String | descriptionOfSizeInBytes (int64 bytes)
static void | findFileSystemRoots (Array< File > &results)
static File JUCE_CALLTYPE | getSpecialLocation (const SpecialLocationType type)
static File | createTempFile (StringRef fileNameEnding)
static File | getCurrentWorkingDirectory ()
static juce_wchar | getSeparatorChar ()
static StringRef | getSeparatorString ()
static String | createLegalFileName (const String &fileNameToFix)
static String | createLegalPathName (const String &pathNameToFix)
static bool | areFileNamesCaseSensitive ()
static bool | isAbsolutePath (StringRef path)
static File | createFileWithoutCheckingPath (const String &absolutePath) noexcept
static String | addTrailingSeparator (const String &path)
static bool | createSymbolicLink (const File &linkFileToCreate, const String &nativePathOfTarget, bool overwriteExisting)

## Detailed Description

Represents a local file or directory.

This class encapsulates the absolute pathname of a file or directory, and has methods for finding out about the file and changing its properties.

To read or write to the file, there are methods for returning an input or output stream.

See also
  FileInputStream, FileOutputStream

Definition at line 44 of file juce_File.h.

## Member Enumeration Documentation

## FollowSymlinks

enum class juce::File::FollowSymlinks

strong

Enumerator
no | Requests that a file system traversal should not follow any symbolic links.
noCycles | Requests that a file system traversal may follow symbolic links, but should attempt to skip any symbolic links to directories that may cause a cycle.
yes | Requests that a file system traversal follow all symbolic links. Use with care, as this may produce inconsistent results, or fail to terminate, if the filesystem contains cycles due to symbolic links.

Definition at line 571 of file juce_File.h.

## SpecialLocationType

enum juce::File::SpecialLocationType

A set of types of location that can be passed to the getSpecialLocation() method.

Enumerator
userHomeDirectory | The user's home folder. This is the same as using File ("~").
userDocumentsDirectory | The user's default documents folder. On Windows, this might be the user's "My Documents" folder. On the Mac it'll be their "Documents" folder. Linux doesn't tend to have one of these, so it might just return their home folder.
userDesktopDirectory | The folder that contains the user's desktop objects.
userMusicDirectory | The most likely place where a user might store their music files.
userMoviesDirectory | The most likely place where a user might store their movie files.
userPicturesDirectory | The most likely place where a user might store their picture files.
userApplicationDataDirectory | The folder in which applications store their persistent user-specific settings. On Windows, this might be "\Documents and Settings\username\Application Data". On the Mac, it might be "~/Library". If you're going to store your settings in here, always create your own sub-folder to put them in, to avoid making a mess. On GNU/Linux it is "~/.config".
commonApplicationDataDirectory | An equivalent of the userApplicationDataDirectory folder that is shared by all users of the computer, rather than just the current user. On the Mac it'll be "/Library", on Windows, it could be something like "\Documents and Settings\All Users\Application Data". On GNU/Linux it is "/opt". Depending on the setup, this folder may be read-only.
commonDocumentsDirectory | A place to put documents which are shared by all users of the machine. On Windows this may be somewhere like "C:\Users\Public\Documents", on OSX it will be something like "/Users/Shared". Other OSes may have no such concept though, so be careful.
tempDirectory | The folder that should be used for temporary files. Always delete them when you're finished, to keep the user's computer tidy!

currentExecutableFile

Returns this application's executable file.

If running as a plug-in or DLL, this will (where possible) be the DLL rather than the host app.

On the mac this will return the unix binary, not the package folder - see currentApplicationFile for that.

See also invokedExecutableFile, which is similar, but if the exe was launched from a file link, invokedExecutableFile will return the name of the link.

currentApplicationFile | Returns this application's location. If running as a plug-in or DLL, this will (where possible) be the DLL rather than the host app. On the mac this will return the package folder (if it's in one), not the unix binary that's inside it - compare with currentExecutableFile.
invokedExecutableFile | Returns the file that was invoked to launch this executable. This may differ from currentExecutableFile if the app was started from e.g. a link - this will return the name of the link that was used, whereas currentExecutableFile will return the actual location of the target executable.
hostApplicationPath | In a plugin, this will return the path of the host executable.
globalApplicationsDirectory | The directory in which applications normally get installed. So on windows, this would be something like "C:\Program Files", on the Mac "/Applications", or "/usr" on linux.

Definition at line 866 of file juce_File.h.

## TypesOfFileToFind

enum juce::File::TypesOfFileToFind

Used in file searching, to specify whether to return files, directories, or both.

Enumerator
findDirectories | Use this flag to indicate that you want to find directories.
findFiles | Use this flag to indicate that you want to find files.
findFilesAndDirectories | Use this flag to indicate that you want to find both files and directories.
ignoreHiddenFiles | Add this flag to avoid returning any hidden files in the results.

Definition at line 563 of file juce_File.h.

## Constructor & Destructor Documentation

## File() [1/4]

juce::File::File | ( |  | ) |

default

Creates an (invalid) file object.

The file is initially set to an empty path, so getFullPathName() will return an empty string.

You can use its operator= method to point it at a proper file.

Referenced by copyDirectoryTo(), copyFileTo(), createFileWithoutCheckingPath(), createSymbolicLink(), createSymbolicLink(), createTempFile(), File(), File(), File(), getChildFile(), getCurrentWorkingDirectory(), getLinkedTarget(), getNativeLinkedTarget(), getNonexistentChildFile(), getNonexistentSibling(), getParentDirectory(), getRelativePathFrom(), getSeparatorString(), getSiblingFile(), getSpecialLocation(), hasIdenticalContentTo(), isAChildOf(), isSymbolicLink(), moveFileTo(), moveToTrash(), operator!=(), operator<(), operator=(), operator=(), operator=(), operator==(), operator>(), replaceFileIn(), withFileExtension(), and ~File().

## File() [2/4]

juce::File::File | ( | const String & | absolutePath | ) |

Creates a file from an absolute path.

If the path supplied is a relative path, it is taken to be relative to the current working directory (see File::getCurrentWorkingDirectory()), but this isn't a recommended way of creating a file, because you never know what the CWD is going to be.

On the Mac/Linux, the path can include "~" notation for referring to user home directories.

Definition at line 26 of file juce_File.cpp.

## File() [3/4]

juce::File::File | ( | const File & | other | ) |

Creates a copy of another file object.

Definition at line 38 of file juce_File.cpp.

## ~File()

juce::File::~File | ( |  | ) |

default

Destructor.

## File() [4/4]

juce::File::File | ( | File && | other | ) |

noexcept

Move constructor

Definition at line 55 of file juce_File.cpp.

## Member Function Documentation

## addTrailingSeparator()

String juce::File::addTrailingSeparator | ( | const String & | path | ) |

static

Adds a separator character to the end of a path if it doesn't already have one.

Definition at line 225 of file juce_File.cpp.

Referenced by getChildFile(), getRelativePathFrom(), and getSeparatorString().

## appendData()

bool juce::File::appendData | ( | const void * | dataToAppend,
|  | size_t | numberOfBytes ) const

Appends a block of binary data to the end of the file.

This will try to write the given buffer to the end of the file.

Returns
  false if it can't write to the file for some reason

Definition at line 753 of file juce_File.cpp.

Referenced by replaceWithData().

## appendText()

bool juce::File::appendText | ( | const String & | textToAppend,
|  | bool | asUnicode = false,
|  | bool | writeUnicodeHeaderBytes = false,
|  | const char * | lineEndings = "\r\n" ) const

Appends a string to the end of the file.

This will try to append a text string to the file, as either 16-bit unicode or 8-bit characters in the default system encoding.

It can also write the 'ff fe' unicode header bytes before the text to indicate the endianness of the file.

If lineEndings is nullptr, then line endings in the text won't be modified. If you pass "\\n" or "\\r\\n" then this function will replace any existing line feeds.

See also
  replaceWithText

Definition at line 776 of file juce_File.cpp.

Referenced by replaceWithText().

## areFileNamesCaseSensitive()

bool juce::File::areFileNamesCaseSensitive | ( |  | ) |

static

Indicates whether filenames are case-sensitive on the current operating system.

Definition at line 236 of file juce_File.cpp.

Referenced by getSeparatorString().

## containsSubDirectories()

bool juce::File::containsSubDirectories | ( |  | ) | const

Returns true if this file is a directory that contains one or more subdirectories.

See also
  isDirectory, findChildFiles

Definition at line 600 of file juce_File.cpp.

## copyDirectoryTo()

bool juce::File::copyDirectoryTo | ( | const File & | newDirectory | ) | const

Copies a directory.

Tries to copy an entire directory, recursively.

If this file isn't a directory or if any target files can't be created, this will return false.

Parameters

  newDirectory | the directory that this one should be copied to. Note that this is the name of the actual directory to create, not the directory into which the new one should be placed, so there must be enough write privileges to create it if it doesn't exist. Any files inside it will be overwritten by similarly named ones that are copied.

Definition at line 326 of file juce_File.cpp.

Referenced by moveToTrash().

## copyFileTo()

bool juce::File::copyFileTo | ( | const File & | targetLocation | ) | const

Copies a file.

Tries to copy a file to a different location. If the target file already exists, this will attempt to delete it first, and will fail if this can't be done.

Note that the target file isn't the directory to put it in, it's the actual filename that you want the new file to have.

Returns
  true if the operation succeeds

Definition at line 305 of file juce_File.cpp.

Referenced by moveToTrash().

## create()

Result juce::File::create | ( |  | ) | const

Creates an empty file if it doesn't already exist.

If the file that this object refers to doesn't exist, this will create a file of zero size.

If it already exists or is a directory, this method will do nothing.

If the parent directories of the File do not exist then this method will recursively create the parent directories.

Returns
  a result to indicate whether the file was created successfully, or an error message if it failed.

See also
  createDirectory

Definition at line 498 of file juce_File.cpp.

Referenced by juce::FileLogger::FileLogger(), and getVersion().

## createDirectory()

Result juce::File::createDirectory | ( |  | ) | const

Creates a new directory for this filename.

This will try to create the file as a directory, and will also create any parent directories it needs in order to complete the operation.

Returns
  a result to indicate whether the directory was created successfully, or an error message if it failed.

See also
  create

Definition at line 519 of file juce_File.cpp.

Referenced by copyDirectoryTo(), and getVersion().

## createFileWithoutCheckingPath()

File juce::File::createFileWithoutCheckingPath | ( | const String & | absolutePath | ) |

static noexcept

Creates a file that simply contains this string, without doing the sanity-checking that the normal constructors do.

Best to avoid this unless you really know what you're doing.

Definition at line 31 of file juce_File.cpp.

Referenced by getParentDirectory(), getSeparatorString(), and juce::DirectoryIterator::next().

## createInputStream()

std::unique_ptr< FileInputStream > juce::File::createInputStream | ( |  | ) | const

Creates a stream to read from this file.

Note that this is an old method, and actually it's usually best to avoid it and instead use an RAII pattern with an FileInputStream directly, e.g.

FileInputStream input (fileToOpen);
if (input.openedOk())
{
input.read (etc...
}
juce::FileInputStream
Definition juce_FileInputStream.h:35

Returns
  a stream that will read from this file (initially positioned at the start of the file), or nullptr if the file can't be opened for some reason

See also
  createOutputStream, loadFileAsData

Definition at line 732 of file juce_File.cpp.

Referenced by juce::URL::createInputStream(), juce::AiffAudioFormat::createMemoryMappedReader(), juce::WavAudioFormat::createMemoryMappedReader(), juce::AudioFormatManager::createReaderFor(), and juce::WavAudioFormat::replaceMetadataInFile().

## createLegalFileName()

String juce::File::createLegalFileName | ( | const String & | fileNameToFix | ) |

static

Returns a version of a filename with any illegal characters removed.

This will return a copy of the given string after removing characters that are not allowed in a legal filename, and possibly shortening the string if it's too long.

Because this will remove slashes, don't use it on an absolute pathname - use createLegalPathName() for that.

See also
  createLegalPathName

Definition at line 843 of file juce_File.cpp.

Referenced by juce::PropertiesFile::Options::getDefaultFile(), and getSeparatorString().

## createLegalPathName()

String juce::File::createLegalPathName | ( | const String & | pathNameToFix | ) |

static

Returns a version of a path with any illegal characters removed.

Similar to createLegalFileName(), but this won't remove slashes, so can be used on a complete pathname.

See also
  createLegalFileName

Definition at line 828 of file juce_File.cpp.

Referenced by getSeparatorString().

## createOutputStream()

std::unique_ptr< FileOutputStream > juce::File::createOutputStream | ( | size_t | bufferSize = 0x8000 | ) | const

Creates a stream to write to this file.

Note that this is an old method, and actually it's usually best to avoid it and instead use an RAII pattern with an FileOutputStream directly, e.g.

FileOutputStream output (fileToOpen);
if (output.openedOk())
{
output.read etc...
}
juce::FileOutputStream
Definition juce_FileOutputStream.h:35

If the file exists, the stream that is returned will be positioned ready for writing at the end of the file. If you want to write to the start of the file, replacing the existing content, then you can do the following:

FileOutputStream output (fileToOverwrite);
if (output.openedOk())
{
output.setPosition (0);
output.truncate();
...
}

Returns
  a stream that will write to this file (initially positioned at the end of the file), or nullptr if the file can't be opened for some reason

See also
  createInputStream, appendData, appendText

Definition at line 742 of file juce_File.cpp.

## createSymbolicLink() [1/2]

bool juce::File::createSymbolicLink | ( | const File & | linkFileToCreate,
|  | bool | overwriteExisting ) const

Tries to create a symbolic link and returns a boolean to indicate success

Definition at line 1002 of file juce_File.cpp.

Referenced by createSymbolicLink(), getSeparatorString(), isSymbolicLink(), and juce::ZipFile::uncompressEntry().

## createSymbolicLink() [2/2]

bool juce::File::createSymbolicLink | ( | const File & | linkFileToCreate,
|  | const String & | nativePathOfTarget,
|  | bool | overwriteExisting )

static

Create a symbolic link to a native path and return a boolean to indicate success.

Use this method if you want to create a link to a relative path or a special native file path (such as a device file on Windows).

Definition at line 963 of file juce_File.cpp.

## createTempFile()

File juce::File::createTempFile | ( | StringRef | fileNameEnding | ) |

static

Returns a temporary file in the system's temp directory. This will try to return the name of a non-existent temp file. To get the temp folder, you can use getSpecialLocation (File::tempDirectory).

Definition at line 951 of file juce_File.cpp.

Referenced by createTempFile(), and getSpecialLocation().

## deleteFile()

bool juce::File::deleteFile | ( |  | ) | const

Deletes a file.

If this file is actually a directory, it may not be deleted correctly if it contains files. See deleteRecursively() as a better way of deleting directories.

If this file is a symlink, then the symlink will be deleted and not the target of the symlink.

Returns
  true if the file has been successfully deleted (or if it didn't exist to begin with).

See also
  deleteRecursively

Referenced by copyFileTo(), createSymbolicLink(), deleteRecursively(), moveFileTo(), replaceFileIn(), replaceWithData(), and juce::FileLogger::trimFileSize().

## deleteRecursively()

bool juce::File::deleteRecursively | ( | bool | followSymlinks = false | ) | const

Deletes a file or directory and all its subdirectories.

If this file is a directory, this will try to delete it and all its subfolders. If it's just a file, it will just try to delete the file.

Parameters

  followSymlinks | If true, then any symlink pointing to a directory will also recursively delete the contents of that directory

Returns
  true if the file and all its subfolders have been successfully deleted (or if it didn't exist to begin with).

See also
  deleteFile

Definition at line 277 of file juce_File.cpp.

Referenced by deleteFile().

## descriptionOfSizeInBytes()

String juce::File::descriptionOfSizeInBytes | ( | int64 | bytes | ) |

static

Utility function to convert a file size in bytes to a neat string description.

So for example 100 would return "100 bytes", 2000 would return "2 KB", 2000000 would produce "2 MB", etc.

Definition at line 483 of file juce_File.cpp.

Referenced by getSize().

## exists()

bool juce::File::exists | ( |  | ) | const

Checks whether the file actually exists.

Returns
  true if the file exists, either as a file or a directory.

See also
  existsAsFile, isDirectory

Referenced by copyFileTo(), create(), createSymbolicLink(), exists(), juce::FileLogger::FileLogger(), getNonexistentSibling(), moveFileTo(), replaceFileIn(), and startAsProcess().

## existsAsFile()

bool juce::File::existsAsFile | ( |  | ) | const

Checks whether the file exists and is a file rather than a directory.

Returns
  true only if this is a real file, false if it's a directory or doesn't exist

See also
  exists, isDirectory

Referenced by existsAsFile(), getRelativePathFrom(), hasIdenticalContentTo(), loadFileAsData(), and loadFileAsString().

## findChildFiles() [1/2]

int juce::File::findChildFiles | ( | Array< File > & | results,
|  | int | whatToLookFor,
|  | bool | searchRecursively,
|  | const String & | wildCardPattern = "*",
|  | FollowSymlinks | followSymlinks = FollowSymlinks::yes ) const

Searches inside a directory for files matching a wildcard pattern. Note that there's a newer, better version of this method which returns the results array, and in almost all cases, you should use that one instead! This one is kept around mainly for legacy code to use.

Definition at line 579 of file juce_File.cpp.

## findChildFiles() [2/2]

Array< File > juce::File::findChildFiles | ( | int | whatToLookFor,
|  | bool | searchRecursively,
|  | const String & | wildCardPattern = "*",
|  | FollowSymlinks | followSymlinks = FollowSymlinks::yes ) const

Searches this directory for files matching a wildcard pattern.

Assuming that this file is a directory, this method will search it for either files or subdirectories whose names match a filename pattern. Note that the order in which files are returned is completely undefined!

Parameters

  whatToLookFor | a value from the TypesOfFileToFind enum, specifying whether to return files, directories, or both. If the ignoreHiddenFiles flag is also added to this value, hidden files won't be returned
  searchRecursively | if true, all subdirectories will be recursed into to do an exhaustive search
  wildCardPattern | the filename pattern to search for, e.g. "*.txt"
  followSymlinks | the method that should be used to handle symbolic links

Returns
  the set of files that were found

See also
  getNumberOfChildFiles, RangedDirectoryIterator

Definition at line 572 of file juce_File.cpp.

Referenced by copyDirectoryTo(), deleteRecursively(), findChildFiles(), juce::FileSearchPath::findChildFiles(), and setReadOnly().

## findFileSystemRoots()

void juce::File::findFileSystemRoots | ( | Array< File > & | results | ) |

static

Creates a set of files to represent each file root.

e.g. on Windows this will create files for "c:\", "d:" etc according to which ones are available. On the Mac/Linux, this will probably just add a single entry for "/".

## getBytesFreeOnVolume()

int64 juce::File::getBytesFreeOnVolume | ( |  | ) | const

Returns the number of bytes free on the drive that this file lives on.

Returns
  the number of bytes free, or 0 if there's a problem finding this out

See also
  getVolumeTotalSize

## getChildFile()

File juce::File::getChildFile | ( | StringRef | relativeOrAbsolutePath | ) | const

Returns a file that represents a relative (or absolute) sub-path of the current one.

This will find a child file or directory of the current object.

e.g. File ("/moose/fish").getChildFile ("foo.txt") will produce "/moose/fish/foo.txt". File ("/moose/fish").getChildFile ("haddock/foo.txt") will produce "/moose/fish/haddock/foo.txt". File ("/moose/fish").getChildFile ("../foo.txt") will produce "/moose/foo.txt".

If the string is actually an absolute path, it will be treated as such, e.g. File ("/moose/fish").getChildFile ("/foo.txt") will produce "/foo.txt"

See also
  getSiblingFile, getParentDirectory, getRelativePathFrom, isAChildOf

Definition at line 420 of file juce_File.cpp.

Referenced by copyDirectoryTo(), createTempFile(), getChildFile(), juce::PropertiesFile::Options::getDefaultFile(), getNonexistentChildFile(), getSiblingFile(), and juce::ZipFile::uncompressEntry().

## getCreationTime()

Time juce::File::getCreationTime | ( |  | ) | const

Returns the time that this file was created.

Returns
  the time, or the Unix Epoch if the file doesn't exist.

See also
  getLastModificationTime, getLastAccessTime

Definition at line 540 of file juce_File.cpp.

Referenced by getFileIdentifier().

## getCurrentWorkingDirectory()

File juce::File::getCurrentWorkingDirectory | ( |  | ) |

static

Returns the current working directory.

See also
  setAsCurrentWorkingDirectory

## getFileExtension()

String juce::File::getFileExtension | ( |  | ) | const

Returns the file's extension.

Returns the file extension of this file, also including the dot.

e.g. "/moose/fish/foo.txt" would return ".txt"

See also
  hasFileExtension, withFileExtension, getFileNameWithoutExtension

Definition at line 672 of file juce_File.cpp.

Referenced by getNonexistentSibling(), and juce::SystemStats::isRunningInAppExtensionSandbox().

## getFileIdentifier()

uint64 juce::File::getFileIdentifier | ( |  | ) | const

Returns a unique identifier for the file, if one is available.

Depending on the OS and file-system, this may be a unix inode number or a win32 file identifier, or 0 if it fails to find one. The number will be unique on the filesystem, but not globally.

Referenced by juce::SystemStats::getMachineIdentifiers().

## getFileName()

String juce::File::getFileName | ( |  | ) | const

Returns the last section of the pathname.

Returns just the final part of the path - e.g. if the whole path is "/moose/fish/foo.txt" this will return "foo.txt".

For a directory, it returns the final part of the path - e.g. for the directory "/moose/fish" it'll return "fish".

If the filename begins with a dot, it'll return the whole filename, e.g. for "/moose/.fish", it'll return ".fish"

See also
  getFullPathName, getFileNameWithoutExtension

Definition at line 372 of file juce_File.cpp.

Referenced by juce::ZipFile::Builder::addFile(), juce::URL::URL(), withFileExtension(), and juce::URL::withFileToUpload().

## getFileNameWithoutExtension()

String juce::File::getFileNameWithoutExtension | ( |  | ) | const

Returns the last part of the filename, without its file extension.

e.g. for "/moose/fish/foo.txt" this will return "foo".

See also
  getFileName, getFileExtension, hasFileExtension, withFileExtension

Definition at line 377 of file juce_File.cpp.

Referenced by getNonexistentSibling().

## getFullPathName()

const String & juce::File::getFullPathName | ( |  | ) | const

inline noexcept

Returns the complete, absolute path of this file.

This includes the filename and all its parent folders. On Windows it'll also include the drive letter prefix; on Mac or Linux it'll be a complete path starting from the root folder.

If you just want the file's name, you should use getFileName() or getFileNameWithoutExtension().

See also
  getFileName, getRelativePathFrom

Definition at line 153 of file juce_File.h.

Referenced by juce::FileSearchPath::add(), createSymbolicLink(), createSymbolicLink(), getFullPathName(), getRelativePathFrom(), juce::ChildProcessCoordinator::launchWorkerProcess(), and juce::URL::URL().

## getLastAccessTime()

Time juce::File::getLastAccessTime | ( |  | ) | const

Returns the last time this file was accessed.

Returns
  the time, or the Unix Epoch if the file doesn't exist.

See also
  setLastAccessTime, getLastModificationTime, getCreationTime

Definition at line 539 of file juce_File.cpp.

Referenced by getFileIdentifier().

## getLastModificationTime()

Time juce::File::getLastModificationTime | ( |  | ) | const

Returns the last modification time of this file.

Returns
  the time, or the Unix Epoch if the file doesn't exist.

See also
  setLastModificationTime, getLastAccessTime, getCreationTime

Definition at line 538 of file juce_File.cpp.

Referenced by juce::ZipFile::Builder::addFile(), and getFileIdentifier().

## getLinkedTarget()

File juce::File::getLinkedTarget | ( |  | ) | const

If this file is a link or alias, this returns the file that it points to. If the file isn't actually a link, it'll just return itself.

Definition at line 1008 of file juce_File.cpp.

Referenced by isSymbolicLink().

## getNativeLinkedTarget()

String juce::File::getNativeLinkedTarget | ( |  | ) | const

This returns the native path that the symbolic link points to. The returned path is a native path of the current OS and can be a relative, absolute or special path.

Referenced by getLinkedTarget().

## getNonexistentChildFile()

File juce::File::getNonexistentChildFile | ( | const String & | prefix,
|  | const String & | suffix,
|  | bool | putNumbersInBrackets = true ) const

Chooses a filename relative to this one that doesn't already exist.

If this file is a directory, this will return a child file of this directory that doesn't exist, by adding numbers to a prefix and suffix until it finds one that isn't already there.

If the prefix + the suffix doesn't exist, it won't bother adding a number.

e.g. File ("/moose/fish").getNonexistentChildFile ("foo", ".txt", true) might return "/moose/fish/foo(2).txt" if there's already a file called "foo.txt".

Parameters

  prefix | the string to use for the filename before the number
  suffix | the string to add to the filename after the number
  putNumbersInBrackets | if true, this will create filenames in the format "prefix(number)suffix", if false, it will leave the brackets out.

Definition at line 609 of file juce_File.cpp.

Referenced by getNonexistentSibling().

## getNonexistentSibling()

File juce::File::getNonexistentSibling | ( | bool | putNumbersInBrackets = true | ) | const

Chooses a filename for a sibling file to this one that doesn't already exist.

If this file doesn't exist, this will just return itself, otherwise it will return an appropriate sibling that doesn't exist, e.g. if a file "/moose/fish/foo.txt" exists, this might return "/moose/fish/foo(2).txt".

Parameters

  putNumbersInBrackets | whether to add brackets around the numbers that get appended to the new filename.

Definition at line 661 of file juce_File.cpp.

## getNumberOfChildFiles()

int juce::File::getNumberOfChildFiles | ( | int | whatToLookFor,
|  | const String & | wildCardPattern = "*" ) const

Searches inside a directory and counts how many files match a wildcard pattern.

Assuming that this file is a directory, this method will search it for either files or subdirectories whose names match a filename pattern, and will return the number of matches found.

This isn't a recursive call, and will only search this directory, not its children.

Parameters

  whatToLookFor | a value from the TypesOfFileToFind enum, specifying whether to count files, directories, or both. If the ignoreHiddenFiles flag is also added to this value, hidden files won't be counted
  wildCardPattern | the filename pattern to search for, e.g. "*.txt"

Returns
  the number of matches found

See also
  findChildFiles, RangedDirectoryIterator

Definition at line 592 of file juce_File.cpp.

Referenced by juce::DirectoryIterator::getEstimatedProgress().

## getParentDirectory()

File juce::File::getParentDirectory | ( |  | ) | const

Returns the directory that contains this file or directory.

e.g. for "/moose/fish/foo.txt" this will return "/moose/fish".

If you are already at the root directory ("/" or "C:") then this method will return the root directory.

Definition at line 358 of file juce_File.cpp.

Referenced by create(), createDirectory(), getNonexistentSibling(), getRelativePathFrom(), getSiblingFile(), isAChildOf(), juce::FileSearchPath::isFileInPath(), isRoot(), juce::SystemStats::isRunningInAppExtensionSandbox(), juce::ZipFile::uncompressEntry(), and juce::URL::URL().

## getRelativePathFrom()

String juce::File::getRelativePathFrom | ( | const File & | directoryToBeRelativeTo | ) | const

Creates a relative path that refers to a file relatively to a given directory.

e.g. File ("/moose/foo.txt").getRelativePathFrom (File ("/moose/fish/haddock")) would return "../../foo.txt".

If it's not possible to navigate from one file to the other, an absolute path is returned. If the paths are invalid, an empty string may also be returned.

Parameters

  directoryToBeRelativeTo | the directory which the resultant string will be relative to. If this is actually a file rather than a directory, its parent directory will be used instead. If it doesn't exist, it's assumed to be a directory.

See also
  getChildFile, isAbsolutePath

Definition at line 887 of file juce_File.cpp.

## getSeparatorChar()

juce_wchar juce::File::getSeparatorChar | ( |  | ) |

static

The system-specific file separator character. On Windows, this will be '\', on Mac/Linux, it'll be '/'

Referenced by addTrailingSeparator(), getChildFile(), getFileExtension(), getFileName(), getFileNameWithoutExtension(), getRelativePathFrom(), hasFileExtension(), isAbsolutePath(), and juce::ZipFile::uncompressEntry().

## getSeparatorString()

StringRef juce::File::getSeparatorString | ( |  | ) |

static

The system-specific file separator character, as a string. On Windows, this will be '\', on Mac/Linux, it'll be '/'

Referenced by createDirectory().

## getSiblingFile()

File juce::File::getSiblingFile | ( | StringRef | siblingFileName | ) | const

Returns a file which is in the same directory as this one.

This is equivalent to getParentDirectory().getChildFile (name).

See also
  getChildFile, getParentDirectory

Definition at line 477 of file juce_File.cpp.

Referenced by createSymbolicLink(), getLinkedTarget(), and withFileExtension().

## getSize()

int64 juce::File::getSize | ( |  | ) | const

Returns the size of the file in bytes.

Returns
  the number of bytes in the file, or 0 if it doesn't exist.

Referenced by getSize(), hasIdenticalContentTo(), loadFileAsData(), juce::WavAudioFormat::replaceMetadataInFile(), and juce::FileLogger::trimFileSize().

## getSpecialLocation()

File JUCE_CALLTYPE juce::File::getSpecialLocation | ( | const SpecialLocationType | type | ) |

static

Finds the location of a special type of file or directory, such as a home folder or documents folder.

See also
  SpecialLocationType

Referenced by createTempFile(), juce::PropertiesFile::Options::getDefaultFile(), juce::SystemStats::getMachineIdentifiers(), juce::FileLogger::getSystemLogFileFolder(), and juce::SystemStats::isRunningInAppExtensionSandbox().

## getVersion()

String juce::File::getVersion | ( |  | ) | const

If possible, this will try to create a version string for the given file.

The OS may be able to look at the file and give a version for it - e.g. with executables, bundles, dlls, etc. If no version is available, this will return an empty string.

## getVolumeLabel()

String juce::File::getVolumeLabel | ( |  | ) | const

Finds the name of the drive on which this file lives.

Returns
  the volume label of the drive, or an empty string if this isn't possible

## getVolumeSerialNumber()

int juce::File::getVolumeSerialNumber | ( |  | ) | const

Returns the serial number of the volume on which this file lives.

Returns
  the serial number, or zero if there's a problem doing this

## getVolumeTotalSize()

int64 juce::File::getVolumeTotalSize | ( |  | ) | const

Returns the total size of the drive that contains this file.

Returns
  the total number of bytes that the volume can hold

See also
  getBytesFreeOnVolume

## hasFileExtension()

bool juce::File::hasFileExtension | ( | StringRef | extensionToTest | ) | const

Checks whether the file has a given extension.

Parameters

  extensionToTest | the extension to look for - it doesn't matter whether or not this string has a dot at the start, so ".wav" and "wav" will have the same effect. To compare with multiple extensions, this parameter can contain multiple strings, separated by semi-colons - so, for example: hasFileExtension (".jpeg;png;gif") would return true if the file has any of those three extensions.

See also
  getFileExtension, withFileExtension, getFileNameWithoutExtension

Definition at line 682 of file juce_File.cpp.

Referenced by juce::AudioFormat::canHandleFile(), and hasFileExtension().

## hashCode()

int juce::File::hashCode | ( |  | ) | const

Returns a 32-bit hash-code that identifies this file.

This is based on the filename. Obviously it's possible, although unlikely, that two files will have the same hash-code.

Definition at line 404 of file juce_File.cpp.

## hashCode64()

int64 juce::File::hashCode64 | ( |  | ) | const

Returns a 64-bit hash-code that identifies this file.

This is based on the filename. Obviously it's possible, although unlikely, that two files will have the same hash-code.

Definition at line 405 of file juce_File.cpp.

## hasIdenticalContentTo()

bool juce::File::hasIdenticalContentTo | ( | const File & | other | ) | const

Attempts to scan the contents of this file and compare it to another file, returning true if this is possible and they match byte-for-byte.

Definition at line 793 of file juce_File.cpp.

## hasReadAccess()

bool juce::File::hasReadAccess | ( |  | ) | const

Checks whether a file can be read.

Returns
  true if it's possible to read this file.

## hasWriteAccess()

bool juce::File::hasWriteAccess | ( |  | ) | const

Checks whether a file can be created or written to.

Returns
  true if it's possible to create and write to this file. If the file doesn't already exist, this will check its parent directory to see if writing is allowed.

See also
  setReadOnly

## isAbsolutePath()

bool juce::File::isAbsolutePath | ( | StringRef | path | ) |

static

Returns true if the string seems to be a fully-specified absolute path.

Definition at line 408 of file juce_File.cpp.

Referenced by getChildFile(), getSeparatorString(), and juce::FileSearchPath::removeRedundantPaths().

## isAChildOf()

bool juce::File::isAChildOf | ( | const File & | potentialParentDirectory | ) | const

Checks whether a file is somewhere inside a directory.

Returns true if this file is somewhere inside a subdirectory of the directory that is passed in. Neither file actually has to exist, because the function just checks the paths for similarities.

e.g. File ("/moose/fish/foo.txt").isAChildOf ("/moose") is true. File ("/moose/fish/foo.txt").isAChildOf ("/moose/fish") is also true.

Definition at line 388 of file juce_File.cpp.

Referenced by isAChildOf(), juce::FileSearchPath::isFileInPath(), and juce::FileSearchPath::removeRedundantPaths().

## isDirectory()

bool juce::File::isDirectory | ( |  | ) | const

Checks whether the file is a directory that exists.

Returns
  true only if the file is a directory which actually exists, so false if it's a file or doesn't exist at all

See also
  exists, existsAsFile

Referenced by containsSubDirectories(), copyDirectoryTo(), createDirectory(), createSymbolicLink(), deleteRecursively(), isDirectory(), juce::SystemStats::isRunningInAppExtensionSandbox(), juce::PropertiesFile::save(), and setReadOnly().

## isHidden()

bool juce::File::isHidden | ( |  | ) | const

Returns true if this file is a hidden or system file. The criteria for deciding whether a file is hidden are platform-dependent.

## isOnCDRomDrive()

bool juce::File::isOnCDRomDrive | ( |  | ) | const

Returns true if this file is on a CD or DVD drive.

## isOnHardDisk()

bool juce::File::isOnHardDisk | ( |  | ) | const

Returns true if this file is on a hard disk.

This will fail if it's a network drive, but will still be true for removable hard-disks.

## isOnRemovableDrive()

bool juce::File::isOnRemovableDrive | ( |  | ) | const

Returns true if this file is on a removable disk drive.

This might be a usb-drive, a CD-rom, or maybe a network drive.

## isRoot()

bool juce::File::isRoot | ( |  | ) | const

Checks whether the path of this file represents the root of a file system, irrespective of its existence.

This will return true for "C:", "D:", etc on Windows and "/" on other platforms.

Definition at line 125 of file juce_File.cpp.

Referenced by isDirectory(), and juce::URL::URL().

## isSymbolicLink()

bool juce::File::isSymbolicLink | ( |  | ) | const

Returns true if this file is a link or alias that can be followed using getLinkedTarget().

Referenced by createSymbolicLink(), deleteRecursively(), and getLinkedTarget().

## loadFileAsData()

bool juce::File::loadFileAsData | ( | MemoryBlock & | result | ) | const

Loads a file's contents into memory as a block of binary data.

Of course, trying to load a very large file into memory will blow up, so it's better to check first.

Parameters

  result | the data block to which the file's contents should be appended - note that if the memory block might already contain some data, you might want to clear it first

Returns
  true if the file could all be read into memory

Definition at line 547 of file juce_File.cpp.

## loadFileAsString()

String juce::File::loadFileAsString | ( |  | ) | const

Reads a file into memory as a string.

Attempts to load the entire file as a zero-terminated string.

This makes use of InputStream::readEntireStreamAsString, which can read either UTF-16 or UTF-8 file formats.

Definition at line 556 of file juce_File.cpp.

Referenced by juce::LocalisedStrings::LocalisedStrings(), juce::JSON::parse(), and readLines().

## moveFileTo()

bool juce::File::moveFileTo | ( | const File & | targetLocation | ) | const

Moves or renames a file.

Tries to move a file to a different location. If the target file already exists, this will attempt to delete it first, and will fail if this can't be done.

Note that the destination file isn't the directory to put it in, it's the actual filename that you want the new file to have.

Also note that on some OSes (e.g. Windows), moving files between different volumes may not be possible.

This function will often fail to move directories because of the ambiguities about merging existing directories. Use copyDirectoryTo() and deleteRecursively() in these situations.

Returns
  true if the operation succeeds

Definition at line 288 of file juce_File.cpp.

Referenced by moveToTrash(), and replaceFileIn().

## moveToTrash()

bool juce::File::moveToTrash | ( |  | ) | const

Moves this file or folder to the trash.

Returns
  true if the operation succeeded. It could fail if the trash is full, or if the file is write-protected, so you should check the return value and act appropriately.

## operator!=()

bool juce::File::operator!= | ( | const File & | other | ) | const

Compares the pathnames for two files.

Definition at line 255 of file juce_File.cpp.

## operator<()

bool juce::File::operator< | ( | const File & | other | ) | const

Compares the pathnames for two files.

Definition at line 256 of file juce_File.cpp.

## operator=() [1/3]

File & juce::File::operator= | ( | const File & | otherFile | ) |

Copies from another file object.

Definition at line 49 of file juce_File.cpp.

## operator=() [2/3]

File & juce::File::operator= | ( | const String & | newAbsolutePath | ) |

Sets the file based on an absolute pathname.

If the path supplied is a relative path, it is taken to be relative to the current working directory (see File::getCurrentWorkingDirectory()), but this isn't a recommended way of creating a file, because you never know what the CWD is going to be.

On the Mac/Linux, the path can include "~" notation for referring to user home directories.

Definition at line 43 of file juce_File.cpp.

## operator=() [3/3]

File & juce::File::operator= | ( | File && | other | ) |

noexcept

Move assignment operator

Definition at line 60 of file juce_File.cpp.

## operator==()

bool juce::File::operator== | ( | const File & | other | ) | const

Compares the pathnames for two files.

Definition at line 254 of file juce_File.cpp.

## operator>()

bool juce::File::operator> | ( | const File & | other | ) | const

Compares the pathnames for two files.

Definition at line 257 of file juce_File.cpp.

## readLines()

void juce::File::readLines | ( | StringArray & | destLines | ) | const

Reads the contents of this file as text and splits it into lines, which are appended to the given StringArray.

Definition at line 566 of file juce_File.cpp.

## replaceFileIn()

bool juce::File::replaceFileIn | ( | const File & | targetLocation | ) | const

Replaces a file.

Replace the file in the given location, assuming the replaced files identity. Depending on the file system this will preserve file attributes such as creation date, short file name, etc.

If replacement succeeds the original file is deleted.

Returns
  true if the operation succeeds

Definition at line 311 of file juce_File.cpp.

Referenced by moveToTrash().

## replaceWithData()

bool juce::File::replaceWithData | ( | const void * | dataToWrite,
|  | size_t | numberOfBytes ) const

Replaces this file's contents with a given block of data.

This will delete the file and replace it with the given data.

A nice feature of this method is that it's safe - instead of deleting the file first and then re-writing it, it creates a new temporary file, writes the data to that, and then moves the new file to replace the existing file. This means that if the power gets pulled out or something crashes, you're a lot less likely to end up with a corrupted or unfinished file..

Returns true if the operation succeeds, or false if it fails.

See also
  appendText

Definition at line 765 of file juce_File.cpp.

## replaceWithText()

bool juce::File::replaceWithText | ( | const String & | textToWrite,
|  | bool | asUnicode = false,
|  | bool | writeUnicodeHeaderBytes = false,
|  | const char * | lineEndings = "\r\n" ) const

Replaces this file's contents with a given text string.

This will delete the file and replace it with the given text.

A nice feature of this method is that it's safe - instead of deleting the file first and then re-writing it, it creates a new temporary file, writes the text to that, and then moves the new file to replace the existing file. This means that if the power gets pulled out or something crashes, you're a lot less likely to end up with an empty file..

For an explanation of the parameters here, see the appendText() method.

Returns true if the operation succeeds, or false if it fails.

See also
  appendText

Definition at line 786 of file juce_File.cpp.

## revealToUser()

void juce::File::revealToUser | ( |  | ) | const

Opens Finder, Explorer, or whatever the OS uses, to show the user this file's location.

See also
  startAsProcess

## setAsCurrentWorkingDirectory()

bool juce::File::setAsCurrentWorkingDirectory | ( |  | ) | const

Sets the current working directory to be this file.

For this to work the file must point to a valid directory.

Returns
  true if the current directory has been changed.

See also
  getCurrentWorkingDirectory

## setCreationTime()

bool juce::File::setCreationTime | ( | Time | newTime | ) | const

Changes the creation date for this file.

Parameters

  newTime | the time to apply to the file

Returns
  true if it manages to change the file's time.

See also
  getCreationTime, setLastModificationTime, setLastAccessTime

Definition at line 544 of file juce_File.cpp.

Referenced by getFileIdentifier().

## setExecutePermission()

bool juce::File::setExecutePermission | ( | bool | shouldBeExecutable | ) | const

Changes the execute-permissions of a file.

Parameters

  shouldBeExecutable | whether to add or remove execute-permission

Returns
  true if it manages to change the file's permissions.

Definition at line 272 of file juce_File.cpp.

Referenced by hasReadAccess().

## setLastAccessTime()

bool juce::File::setLastAccessTime | ( | Time | newTime | ) | const

Changes the last-access time for this file.

Parameters

  newTime | the time to apply to the file

Returns
  true if it manages to change the file's time.

See also
  getLastAccessTime, setLastModificationTime, setCreationTime

Definition at line 543 of file juce_File.cpp.

Referenced by getFileIdentifier().

## setLastModificationTime()

bool juce::File::setLastModificationTime | ( | Time | newTime | ) | const

Changes the modification time for this file.

Parameters

  newTime | the time to apply to the file

Returns
  true if it manages to change the file's time.

See also
  getLastModificationTime, setLastAccessTime, setCreationTime

Definition at line 542 of file juce_File.cpp.

Referenced by getFileIdentifier().

## setReadOnly()

bool juce::File::setReadOnly | ( | bool | shouldBeReadOnly,
|  | bool | applyRecursively = false ) const

Changes the write-permission of a file or directory.

Parameters

  shouldBeReadOnly | whether to add or remove write-permission
  applyRecursively | if the file is a directory and this is true, it will recurse through all the subfolders changing the permissions of all files

Returns
  true if it manages to change the file's permissions.

See also
  hasWriteAccess

Definition at line 260 of file juce_File.cpp.

Referenced by hasReadAccess().

## startAsProcess()

bool juce::File::startAsProcess | ( | const String & | parameters = String() | ) | const

Launches the file as a process.

- if the file is executable, this will run it.
- if it's a document of some kind, it will launch the document with its default viewer application.
- if it's a folder, it will be opened in Explorer, Finder, or equivalent.

See also
  revealToUser

Definition at line 726 of file juce_File.cpp.

Referenced by isOnRemovableDrive().

## withFileExtension()

File juce::File::withFileExtension | ( | StringRef | newExtension | ) | const

Returns a version of this file with a different file extension.

e.g. File ("/moose/fish/foo.txt").withFileExtension ("html") returns "/moose/fish/foo.html"

Parameters

  newExtension | the new extension, either with or without a dot at the start (this doesn't make any difference). To get remove a file's extension altogether, pass an empty string into this function.

See also
  getFileName, getFileExtension, hasFileExtension, getFileNameWithoutExtension

Definition at line 707 of file juce_File.cpp.

Referenced by createTempFile(), and juce::PropertiesFile::Options::getDefaultFile().

The documentation for this class was generated from the following files:

- juce_File.h
- juce_File.cpp