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- /*
- ** IterateDirectory: File Manager directory iterator routines.
- **
- ** by Jim Luther
- **
- ** File: IterateDirectory.h
- **
- ** Copyright © 1995 Jim Luther
- ** All rights reserved.
- **
- ** You may incorporate this sample code into your applications without
- ** restriction, though the sample code has been provided "AS IS" and the
- ** responsibility for its operation is 100% yours.
- **
- ** IterateDirectory is designed to drop into the MoreFiles sample code
- ** library I wrote while in Apple Developer Technical Support
- */
-
- #ifndef __ITERATEDIRECTORY__
- #define __ITERATEDIRECTORY__
-
- #include <Types.h>
- #include <Files.h>
-
- #ifdef __cplusplus
- extern "C" {
- #endif
-
- /*****************************************************************************/
-
- typedef pascal void (*IterateFilterProcPtr) (const CInfoPBRec * const cpbPtr,
- Boolean *quitFlag,
- void *yourDataPtr);
- /* ¶ Prototype for the IterateFilterProc function IterateDirectory calls.
- This is the prototype for the IterateFilterProc function which is
- called once for each file and directory found by IterateDirectory. The
- IterateFilterProc gets a pointer to the CInfoPBRec that IterateDirectory
- used to call PBGetCatInfo. The IterateFilterProc can use the read-only
- data in the CInfoPBRec for whatever it wants.
-
- If the IterateFilterProc wants to stop IterateDirectory, it can set
- quitFlag to true (quitFlag will be passed to the IterateFilterProc
- false).
-
- The yourDataPtr parameter can point to whatever data structure you might
- want to access from within the IterateFilterProc.
-
- cpbPtr input: A pointer to the CInfoPBRec that IterateDirectory
- used to call PBGetCatInfo. The CInfoPBRec and the
- data it points to must not be changed by your
- IterateFilterProc.
- quitFlag output: Your IterateFilterProc can set quitFlag to true
- if it wants to stop IterateDirectory.
- yourDataPtr input: A pointer to whatever data structure you might
- want to access from within the IterateFilterProc.
-
- __________
-
- Also see: IterateDirectory, FSpIterateDirectory
- */
-
- #define CallIterateFilterProc(userRoutine, cpbPtr, quitFlag, yourDataPtr) \
- (*(userRoutine))((cpbPtr), (quitFlag), (yourDataPtr))
-
- /*****************************************************************************/
-
- pascal OSErr IterateDirectory(short vRefNum,
- long dirID,
- StringPtr name,
- unsigned short maxLevels,
- IterateFilterProcPtr iterateFilter,
- void *yourDataPtr);
- /* ¶ Iterate (scan) through a directory's content.
- The IterateDirectory function performs a recursive iteration (scan) of
- the specified directory and calls your IterateFilterProc function once
- for each file and directory found.
-
- The maxLevels parameter lets you control how deep the recursion goes.
- If maxLevels is 1, IterateDirectory only scans the specified directory;
- if maxLevels is 2, IterateDirectory scans the specified directory and
- one subdirectory below the specified directory; etc. Set maxLevels to
- zero to scan all levels.
-
- The yourDataPtr parameter can point to whatever data structure you might
- want to access from within the IterateFilterProc.
-
- vRefNum input: Volume specification.
- dirID input: Directory ID.
- name input: Pointer to object name, or nil when dirID
- specifies a directory that's the object.
- maxLevels input: Maximum number of directory levels to scan or
- zero to scan all directory levels.
- iterateFilter input: A pointer to the routine you want called once
- for each file and directory found by
- IterateDirectory.
- yourDataPtr input: A pointer to whatever data structure you might
- want to access from within the IterateFilterProc.
-
- __________
-
- See also: IterateFilterProcPtr, FSpIterateDirectory
- */
-
- /*****************************************************************************/
-
- pascal OSErr FSpIterateDirectory(const FSSpec *spec,
- unsigned short maxLevels,
- IterateFilterProcPtr iterateFilter,
- void *yourDataPtr);
- /* ¶ Iterate (scan) through a directory's content.
- The FSpIterateDirectory function performs a recursive iteration (scan)
- of the specified directory and calls your IterateFilterProc function once
- for each file and directory found.
-
- The maxLevels parameter lets you control how deep the recursion goes.
- If maxLevels is 1, FSpIterateDirectory only scans the specified directory;
- if maxLevels is 2, FSpIterateDirectory scans the specified directory and
- one subdirectory below the specified directory; etc. Set maxLevels to
- zero to scan all levels.
-
- The yourDataPtr parameter can point to whatever data structure you might
- want to access from within the IterateFilterProc.
-
- spec input: An FSSpec record specifying the directory to scan.
- maxLevels input: Maximum number of directory levels to scan or
- zero to scan all directory levels.
- iterateFilter input: A pointer to the routine you want called once
- for each file and directory found by
- FSpIterateDirectory.
- yourDataPtr input: A pointer to whatever data structure you might
- want to access from within the IterateFilterProc.
-
- __________
-
- See also: IterateFilterProcPtr, IterateDirectory
- */
-
- /*****************************************************************************/
-
- #ifdef __cplusplus
- }
- #endif
-
- #endif /* __ITERATEDIRECTORY__ */
-