ACE 6.0.3
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Define a portable C++ directory-entry iterator based on the POSIX API. More...
#include <Dirent.h>
Public Member Functions | |
ACE_Dirent (void) | |
Default constructor. | |
ACE_Dirent (const ACE_TCHAR *dirname) | |
Constructor calls opendir() | |
int | open (const ACE_TCHAR *filename) |
~ACE_Dirent (void) | |
Destructor calls closedir() . | |
void | close (void) |
Closes the directory stream and frees the ACE_DIR structure. | |
ACE_DIRENT * | read (void) |
int | read (struct ACE_DIRENT *entry, struct ACE_DIRENT **result) |
long | tell (void) |
void | seek (long loc) |
void | rewind (void) |
Private Attributes | |
ACE_DIR * | dirp_ |
Pointer to the directory stream. |
Define a portable C++ directory-entry iterator based on the POSIX API.
ACE_Dirent::ACE_Dirent | ( | void | ) | [inline] |
Default constructor.
ACE_Dirent::~ACE_Dirent | ( | void | ) | [inline] |
Destructor calls closedir()
.
void ACE_Dirent::close | ( | void | ) | [inline] |
Closes the directory stream and frees the ACE_DIR structure.
int ACE_Dirent::open | ( | const ACE_TCHAR * | filename | ) | [inline] |
Opens the directory named by filename and associates a directory stream with it.
int ACE_Dirent::read | ( | struct ACE_DIRENT * | entry, |
struct ACE_DIRENT ** | result | ||
) | [inline] |
Has the equivalent functionality as read()
except that an entry and result buffer must be supplied by the caller to store the result.
ACE_DIRENT * ACE_Dirent::read | ( | void | ) | [inline] |
Returns a pointer to a structure representing the directory entry at the current position in the directory stream to which dirp refers, and positions the directory stream at the next entry, except on read-only filesystems. It returns a NULL pointer upon reaching the end of the directory stream, or upon detecting an invalid location in the directory. read()
shall not return directory entries containing empty names. It is unspecified whether entries are returned for dot or dot-dot. The pointer returned by read()
points to data that may be overwritten by another call to read()
on the same directory stream. This data shall not be overwritten by another call to read()
on a different directory stream. read()
may buffer several directory entries per actual read operation; read()
marks for update the st_atime field of the directory each time the directory is actually read.
void ACE_Dirent::rewind | ( | void | ) | [inline] |
Resets the position of the directory stream to the beginning of the directory. It also causes the directory stream to refer to the current state of the corresponding directory, as a call to opendir()
would.
void ACE_Dirent::seek | ( | long | loc | ) | [inline] |
Sets the position of the next read()
operation on the directory stream. The new position reverts to the position associated with the directory stream at the time the tell()
operation that provides loc was performed. Values returned by tell()
are good only for the lifetime of the ACE_DIR pointer from which they are derived. If the directory is closed and then reopened, the telldir()
value may be invalidated due to undetected directory compaction. It is safe to use a previous telldir()
value immediately after a call to opendir()
and before any calls to readdir.
long ACE_Dirent::tell | ( | void | ) | [inline] |
Returns the current location associated with the directory stream.
ACE_DIR* ACE_Dirent::dirp_ [private] |
Pointer to the directory stream.