File Manager Functions	Chapter
	7
File Manager Data Structures

File/Directory Information Record

Several routines in the file manager work with a data structure that defines the attributes of a file or directory. The following list gives the file/directory information record.

typedef struct {
int32	type;	* system specific file type-
		- 0 for directories */
int32	creator;	* system specific file
		creator-- 0 for folders (on
		Mac only)*/
int32	permissions;	* system specific file access
		rights */
int32	size;	/* file size in bytes (data
		fork on Mac) or entries in
		directory*/
int32	rfSize;	/* resource fork size (on Mac
		only) */
uInt32	cdate;	/* creation date: seconds
		since system reference time
		*/
uInt32	mdate;	/* last modification date:
		seconds since system ref time
		*/
Bool32	folder;	/* indicates whether path
		refers to a folder */
Bool32	isInvisible;	/* indicates whether file is
		visible in File Dialog (on
		Mac only)*/
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Chapter 7 File Manager Functions

Point	location;	/* system specific desktop
		geographical location (on Mac
		only)*/
Str255	owner;	/* owner (in pascal string
		form) of file or folder */
Str255	group;	/* group (in pascal string
		form) of file or folder */

}FInfoRec, *FInfoPtr;

File Type Record

The file type record is:

typedef struct {

int32 flags;

int32 type;

}FileType;

Only the least significant four bits of flags contain useful information. The remaining bits are reserved for use by LabVIEW. You can test these four bits using the following four masks:

#define kIsFile 0x01

#define kRecognizedType 0x02

#define kIsLink 0x04

#define kFIsInvisible 0x08

The kIsFile bit is set if the item described by the file type record is a file; otherwise it is clear. The kRecognizedType bit is set if the item described is a file for which you can determine a 4-character file type; otherwise it is clear. The kIsLink bit is set if the item described is a UNIX link or Macintosh alias; otherwise it is clear. The kFIsInvisible bit is set if the item described will not appear in a file dialog; otherwise it is clear.

The value of type is defined only if the kRecognizedType bit is set in flags. In this case, type is the 4-character file type of the file described by the file type record. This 4-character file type is provided by the file system on the Macintosh and is computed by examining the file name extension on other systems.

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