/* File: IterateDirectory.h Contains: File Manager directory iterator routines. Version: Technology: MoreFiles Release: 1.5.2 Copyright: © 1995-2001 by Jim Luther and Apple Computer, Inc., all rights reserved. Bugs?: For bug reports, consult the following page on the World Wide Web: http://developer.apple.com/bugreporter/ */ /* 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. However, what you are not permitted to do is to redistribute the source as "DSC Sample Code" after having made changes. If you're going to re-distribute the source, we require that you make it clear in the source that the code was descended from Apple Sample Code, but that you've made changes. */ #ifndef __ITERATEDIRECTORY__ #define __ITERATEDIRECTORY__ #ifndef __MACTYPES__ #include #endif #ifndef __FILES__ #include #endif #include "Optimization.h" #if PRAGMA_ONCE #pragma once #endif #ifdef __cplusplus extern "C" { #endif #if PRAGMA_IMPORT #pragma import on #endif #if PRAGMA_STRUCT_ALIGN #pragma options align=mac68k #elif PRAGMA_STRUCT_PACKPUSH #pragma pack(push, 2) #elif PRAGMA_STRUCT_PACK #pragma pack(2) #endif /*****************************************************************************/ typedef CALLBACK_API( void , IterateFilterProcPtr )(const CInfoPBRec *cpbPtr, Boolean *quitFlag, void *yourDataPtr); /* 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)) /*****************************************************************************/ EXTERN_API( OSErr ) IterateDirectory( short vRefNum, long dirID, ConstStr255Param name, unsigned short maxLevels, IterateFilterProcPtr iterateFilter, void * yourDataPtr); /* 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. Result Codes noErr 0 No error nsvErr -35 No such volume ioErr -36 I/O error bdNamErr -37 Bad filename fnfErr -43 File not found paramErr -50 No default volume or iterateFilter was NULL dirNFErr -120 Directory not found or incomplete pathname or a file was passed instead of a directory afpAccessDenied -5000 User does not have the correct access afpObjectTypeErr -5025 Directory not found or incomplete pathname __________ See also: IterateFilterProcPtr, FSpIterateDirectory */ /*****************************************************************************/ EXTERN_API( OSErr ) FSpIterateDirectory( const FSSpec * spec, unsigned short maxLevels, IterateFilterProcPtr iterateFilter, void * yourDataPtr); /* 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. Result Codes noErr 0 No error nsvErr -35 No such volume ioErr -36 I/O error bdNamErr -37 Bad filename fnfErr -43 File not found paramErr -50 No default volume or iterateFilter was NULL dirNFErr -120 Directory not found or incomplete pathname afpAccessDenied -5000 User does not have the correct access afpObjectTypeErr -5025 Directory not found or incomplete pathname __________ See also: IterateFilterProcPtr, IterateDirectory */ /*****************************************************************************/ #include "OptimizationEnd.h" #if PRAGMA_STRUCT_ALIGN #pragma options align=reset #elif PRAGMA_STRUCT_PACKPUSH #pragma pack(pop) #elif PRAGMA_STRUCT_PACK #pragma pack() #endif #ifdef PRAGMA_IMPORT_OFF #pragma import off #elif PRAGMA_IMPORT #pragma import reset #endif #ifdef __cplusplus } #endif #endif /* __ITERATEDIRECTORY__ */