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/*
* $Author: cck $ $Date: 88/02/23 17:16:07 $
* $Header: afpdt.h,v 1.11 88/02/23 17:16:07 cck Rel $
* $Revision: 1.11 $
*/
/*
* afpdt.h - Appletalk Filing Protocol Desktop definitions
*
* AppleTalk package for UNIX (4.2 BSD).
*
* Copyright (c) 1986, 1987, 1988 by The Trustees of Columbia University in the
* City of New York.
*
* Edit History:
*
* Mar 30, 1987 Schilit Created.
*
*
*/
#include "afpavl.h" /* relies strickly on avl structs */
#define FF_ICON 00
#define FF_APPL 01
#define FF_COMM 02
#define FCreatorSize 4
#define FTypeSize 4
#define ITagSize 4
typedef struct { /* Icon Information */
sdword i_bmsize; /* 4: size of the icon bitmap */
byte i_FCreator[FCreatorSize]; /* 4[8]: file's creator type */
byte i_FType[FTypeSize]; /* 4[12] file's type */
byte i_IType; /* 1[13] icon type */
byte i_pad1; /* 1[14] */
byte i_ITag[ITagSize]; /* 4[18] user bytes */
byte i_pad2[2]; /* 2[20] pad out to double word boundry */
} IconInfo;
typedef struct { /* APPL information */
byte a_FCreator[4]; /* creator of application */
byte a_ATag[4]; /* user bytes */
} APPLInfo;
/* never use zero or 0x1741 as the major version */
#define AFR_MAGIC 0x00010002 /* version 1.2 (don't use 1.1, 2.2, etc) */
/* version 1.0 (version 0x1741.0000/0x1741) */
typedef struct { /* File Format APPL record */
dword afr_magic; /* magic number for check */
APPLInfo afr_info; /* the appl info */
sdword afr_pdirlen; /* length of (relative) parent directory */
sdword afr_fnamlen; /* length of application name */
/* name follows */
} APPLFileRecord;
/* never use zero or 0x2136 as the major version */
#define IFR_MAGIC 0x00010002 /* Version 1.2, skip 1.1, 2.2, etc. */
/* version 1.0: 0x2136.0000/0x2136 */
typedef struct { /* File Format ICON record */
dword ifr_magic; /* the magic check */
IconInfo ifr_info; /* the icon info */
/* bitmap follows this */
} IconFileRecord;
struct IconNodeStruct { /* Internal format Icon record */
IconInfo in_info; /* the icon info */
off_t in_iloc; /* file location */
int in_mloc; /* cache index */
byte *in_uloc; /* if set, then pointer to unix icon */
struct IconNodeStruct *in_next; /* pointer to next in chain */
};
typedef struct IconNodeStruct IconNode;
struct APPLNodeStruct { /* Internal format APPL record */
struct APPLNodeStruct *an_next;
APPLInfo an_info; /* Appl info */
IDirP an_ipdir; /* parent directory */
IDirP an_ippdir; /* parent of parent */
off_t an_iloc; /* location in .ADeskTop */
int an_flags; /* flags */
#define AN_DEL 0x1 /* entry is deleted - really need AVLDelete */
#define AN_MOD 0x2 /* entry is "new" - modified or added */
/* after readadesktop */
char *an_fnam; /* file name pointer */
};
typedef struct APPLNodeStruct APPLNode;
typedef struct {
int dt_ifd; /* handle on desktop file */
int dt_afd; /* handle on desktop file */
int dt_ivol; /* desktop belongs to this volume */
word dt_evol; /* external value of above */
AVLNode *dt_avlroot; /* root of avl tree mapping file creators */
byte dt_oFCreator[FCreatorSize]; /* key for last cache entry of above */
AVLNode *dt_avllast; /* node pointed to by key */
IDirP dt_rootd; /* volumes root dir */
int dt_opened; /* true if desktop is open */
} DeskTop, *DeskTopP;
#define IFRLEN (sizeof(IconFileRecord))
#define AFRLEN (sizeof(APPLFileRecord))
#define NILDT ((DeskTop *) 0)
DeskTop *VolGetDesk();
void VolSetDesk();
void VolClrDesk();
typedef struct {
IconNode *ib_node; /* pointer to owner node */
byte *ib_data; /* pointer to the icon data */
int ib_size; /* size of icon data */
} IconCacheEntry, *ICEP;
/*
* ICSize is the size of the icon cache which is used to store icon
* bitmaps in memory. The size of the cache is dependant on the
* following:
*
* Memory:
* size of each entry is about 256 bytes (icon data size for b&w icons) +
* Sizeof(IconCacheEntry).
*
* Work:
* Reference to an icon bitmap in memory is constant time since the
* cache index is stored in the IconNode.
*
* Reference to an icon bitmap in a file causes a scan of the entire
* cache in order to find the minimum entry for replacement.
*
* Performance:
* A good cache size would try to contain all the icons on the desktop
* (considering the above constaints) since the finder will try to read
* the icon bitmaps when returning to the desktop.
*
*/
#define ICSize 100 /* number of icon cache entries */
These are the contents of the former NiCE NeXT User Group NeXTSTEP/OpenStep software archive, currently hosted by Netfuture.ch.