Unigine::Dir Class

Usage Example

Here is an example of how to print out names of all nested directories in the specified directory:

Source code (C++)

// create a descriptor for the specified directory and open it
Unigine::DirPtr dir = Unigine::Dir::create();
 
// specify your path string (relative or absolute)
// the Dir class cannot resolve a relative path, so a request to FileSystem is required
dir->open(Unigine::FileSystem::getAbsolutePath("path"));
// or in case the path is absolute you can use: dir->open("path");

// loop through all nested directories and print their names
int num_dirs = dir->getNumDirs();
for (int i = 0; i < num_dirs; ++i)
{
	const char *dirname = dir->getDirName(i);
	Unigine::Log::message("Dir name %s\n", dirname);
}
// always close the directory descriptor before leaving the scope
dir->close();

功能列表:

Name	描述 View: Sort by:
*create*	Default constructor.
isOpened	Checks whether the directory is opened.
getDirName	Returns name of the directory with given index.
getFileMTime	Returns the time of the file last modification.
getFileName	Returns name of the file with given index.
getFileSize	Returns the size of the file with the given index.
setMTime	Sets the time of the last directory modification.
getMTime	Returns the time of the last directory modification.
getName	Returns the name of the current directory.
getNumDirs	Returns number of nested directories.
getNumFiles	Returns number of files inside the directory.
isFile	Returns a value indicating if the specified file path exists.
getSize	Returns the size of the current directory.
close	Closes the directory descriptor.
open	Opens the directory.
isAbsolute	Returns a value indicating if the specified directory path is an absolute one.
copy	Copies the specified file to a new destination path.
isDir	Returns a value indicating if the specified directory exists.
getHomeDir	Returns a path to the home directory.
getCurrentDir	Returns a path to the current working directory.
chdir	Changes the current working directory to the given path.
mkdir	Creates a directory named path.
rmdir	Removes the specified directory path.
remove	Removes the specified file.
rename	Renames the specified file path to new_name.
chmod	Changes the permission setting of the specified file.
getmod	Returns the permission setting of the specified file.
setAttribute	Sets a new file system attribute for the specified file or directory.
getAttribute	Returns a file system attribute for a specified file or directory.

Variables:

Name	Description
ATTRIBUTE_HIDDEN = 1 << 0	File or directory is hidden. It is not included in an ordinary directory listing.
ATTRIBUTE_READONLY = 1 << 1	File is read-only. You can read the file, but cannot write to it or delete it. This attribute is not honored on directories.
ATTRIBUTE_TEMPORARY = 1 << 2	File that is being used for temporary storage. File systems avoid writing data back to mass storage if sufficient cache memory is available, because typically, an application deletes a temporary file after the handle is closed. In that scenario, the system can entirely avoid writing the data. Otherwise, the data is written after the handle is closed..

Dir Class

Members

static DirPtr create ( ) #

Default constructor.

static DirPtr create ( const char * name ) #

Constructor. Creates a new directory instance.

Arguments

const char * name - Directory path to open.

const char * getDirName ( int num ) const#

Returns name of the directory with given index.

Arguments

int num - Directory index.

Return value

Name of the directory with num index.

long long getFileMTime ( int num ) const#

Returns the time of the file last modification.

Arguments

int num - File index.

Return value

Time of the last modification.

const char * getFileName ( int num ) const#

Returns name of the file with given index.

Arguments

int num - File index.

Return value

Name of the file with num index.

size_t getFileSize ( int num ) const#

Returns the size of the file with the given index.

Arguments

int num - File index.

Return value

File size.

long long getFileSize ( const char * path ) #

Returns the size of the specified file.

Arguments

const char * path - Path to an existing file to retrieve the size for.

Return value

File size in bytes.

int setMTime ( const char * path, long long time ) #

Sets the time of the last directory modification.

Arguments

const char * path - Directory name.
long long time - Time of the last modification.

Return value

1 if the time of the last directory modification was set successfully; otherwise, 0.

long long getMTime ( const char * path ) #

Returns the time of the last directory modification.

Arguments

const char * path - Directory name.

Return value

Time of the last modification.

const char * getName ( ) const#

Returns the name of the current directory.

Return value

Directory name.

int getNumDirs ( ) const#

Returns number of nested directories.

Return value

Number of directories.

int getNumFiles ( ) const#

Returns number of files inside the directory.

Return value

Number of files.

bool isFile ( const char * path ) #

Returns a value indicating if the specified file path exists.

Arguments

const char * path - File path to be checked.

Return value

true if the specified file path exists; otherwise, false.

bool isOpened ( ) const#

Checks whether the directory is opened.

Return value

true if the directory is opened; otherwise, false.

size_t getSize ( ) const#

Returns the size of the current directory.

Return value

Directory size.

bool close ( ) #

Closes the directory descriptor.

Return value

true if the directory descriptor is closed successfully; otherwise, false.

bool open ( const char * name ) #

Opens the directory. Always close the directory descriptor via close() before leaving the scope:

Source code (C++)

Unigine::DirPtr dir = Unigine::Dir::create();

dir->open(Unigine::FileSystem::getAbsolutePath("path"));

	// ...

dir->close();

Arguments

const char * name - Directory path.

Return value

Directory descriptor.

int isAbsolute ( const char * path ) #

Returns a value indicating if the specified directory path is an absolute one.

Arguments

const char * path - Directory path.

Return value

1 if the specified directory path is an absolute one; otherwise, 0.

int copy ( const char * path, const char * new_name ) #

Copies the specified file to a new destination path.

Arguments

const char * path - Source file path.
const char * new_name - Destination file path.

Return value

1 if the specified file was successfully copied; otherwise, 0.

bool isDir ( const char * path ) #

Returns a value indicating if the specified directory exists.

Arguments

const char * path - Directory path to be checked.

Return value

true if the specified directory exists; otherwise, false.

const char * getHomeDir ( ) #

Returns a path to the home directory.

Return value

Path to the current working directory.

const char * getCurrentDir ( ) #

Returns a path to the current working directory.

Return value

Path to the current working directory.

int chdir ( const char * path ) #

Changes the current working directory to the given path.

Arguments

const char * path - New path to which the current working directory is to be chahged.

Return value

1 if the current working directory is changed successfully; otherwise, 0.

int mkdir ( const char * path ) #

Creates a directory named path.

Arguments

const char * path - Path to a new directory to be created.

Return value

1 if the specified directory is created successfully or has been created before (i.e. already exists); otherwise, 0.

int mkdir ( const char * path, bool recursion ) #

Creates a directory named path.

Arguments

const char * path - Path to a new directory to be created.
bool recursion - Use true to create non-existent directories recursively; otherwise, false.

Return value

1 if the specified directory is created successfully or has been created before (i.e. already exists); otherwise, 0.

int rmdir ( const char * path ) #

Removes the specified directory path. It works only when the directory is empty and is neither the current working directory or the home directory.

Arguments

const char * path - Path of the directory to be removed.

int rmdir ( const char * path, bool recursion ) #

Removes the specified directory path. It works only when the directory is empty and is neither the current working directory or the home directory.

Arguments

const char * path - Path of the directory to be removed.
bool recursion - Use true to remove directories recursively; otherwise, false.

Return value

1 if the specified directory path is removed successfully; otherwise, 0.

int remove ( const char * path ) #

Removes the specified file.

Arguments

const char * path - Path to a file to be removed.

Return value

1 if the specified file is removed successfully; otherwise, 0.

int rename ( const char * path, const char * new_name ) #

Renames the specified file path to new_name.

Arguments

const char * path - Path to a file to be renamed.
const char * new_name - New path to a file.

Return value

1 if the specified file is renamed successfully; otherwise, 0.

int chmod ( const char * path, int mode ) #

Changes the permission setting of the specified file. The permission setting controls the read and write access to the file.

Arguments

const char * path - Path to an existing file to change the permission setting for.
int mode - New permission setting for the specified file (1 - RW, 0 - RO).

Return value

1 if the permission setting of the specified file is successfully changed; otherwise, 0.

int getmod ( const char * path ) #

Returns the permission setting of the specified file. The permission setting controls the read and write access to the file.

Arguments

const char * path - Path to an existing file to retrieve the permission setting for.

Return value

Permission setting for the specified file (1 - RW, 0 - RO); otherwise, -1 - if the filename or path could not be found.

int setAttribute ( const char * path, int attribute ) #

Sets a new file system attribute for the specified file or directory.

Arguments

const char * path - Path to a file or directory for which a new attribute is to be set.
int attribute - New file or directory attribute to be set. One of the ATTRIBUTE_* values.

Return value

1 if the specified file attribute is successfully set for the specified file/directory path; otherwise, 0.

int getAttribute ( const char * path ) #

Returns a file system attribute for a specified file or directory.

Arguments

const char * path - Path to a file or directory for which an attribute is to be retrieved.

Return value

File or directory attribute. One of the ATTRIBUTE_* values.

Last update: 2024-08-16

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Unigine::Dir Class

In This Article:

Usage Example

功能列表:

Variables:

Dir Class

Members

static DirPtr create ( ) #

static DirPtr create ( const char * name ) #

Arguments

const char * getDirName ( int num ) const#

Arguments

Return value

long long getFileMTime ( int num ) const#

Arguments

Return value

const char * getFileName ( int num ) const#

Arguments

Return value

size_t getFileSize ( int num ) const#

Arguments

Return value

long long getFileSize ( const char * path ) #

Arguments

Return value

int setMTime ( const char * path, long long time ) #

Arguments

Return value

long long getMTime ( const char * path ) #

Arguments

Return value

const char * getName ( ) const#

Return value

int getNumDirs ( ) const#

Return value

int getNumFiles ( ) const#

Return value

bool isFile ( const char * path ) #

Arguments

Return value

bool isOpened ( ) const#

Return value

size_t getSize ( ) const#

Return value

bool close ( ) #

Return value

bool open ( const char * name ) #

Arguments

Return value

int isAbsolute ( const char * path ) #

Arguments

Return value

int copy ( const char * path, const char * new_name ) #

Arguments

Return value

bool isDir ( const char * path ) #

Arguments

Return value

const char * getHomeDir ( ) #

Return value

const char * getCurrentDir ( ) #

Return value

int chdir ( const char * path ) #

Arguments

Return value

int mkdir ( const char * path ) #

Arguments

Return value

int mkdir ( const char * path, bool recursion ) #

Arguments

Return value

int rmdir ( const char * path ) #

Arguments

int rmdir ( const char * path, bool recursion ) #

Arguments

Return value

int remove ( const char * path ) #

Arguments

Return value

int rename ( const char * path, const char * new_name ) #