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- #ifndef IFF_IFFPARSE_H
- #define IFF_IFFPARSE_H
- /*
- ** $VER: iffparse.h 39.1 (1.6.92)
- ** Includes Release 40.15
- **
- ** iffparse.library structures and constants
- **
- ** (C) Copyright 1989-1993 Commodore-Amiga Inc.
- ** (C) Copyright 1989-1990 Stuart Ferguson and Leo L. Schwab
- ** All Rights Reserved
- */
-
- /*****************************************************************************/
-
-
- #ifndef EXEC_TYPES_H
- #include <exec/types.h>
- #endif
-
- #ifndef EXEC_LISTS_H
- #include <exec/lists.h>
- #endif
-
- #ifndef EXEC_PORTS_H
- #include <exec/ports.h>
- #endif
-
- #ifndef DEVICES_CLIPBOARD_H
- #include <devices/clipboard.h>
- #endif
-
-
- /*****************************************************************************/
-
-
- /* Structure associated with an active IFF stream.
- * "iff_Stream" is a value used by the client's read/write/seek functions -
- * it will not be accessed by the library itself and can have any value
- * (could even be a pointer or a BPTR).
- *
- * This structure can only be allocated by iffparse.library
- */
- struct IFFHandle
- {
- ULONG iff_Stream;
- ULONG iff_Flags;
- LONG iff_Depth; /* Depth of context stack */
- };
-
- /* bit masks for "iff_Flags" field */
- #define IFFF_READ 0L /* read mode - default */
- #define IFFF_WRITE 1L /* write mode */
- #define IFFF_RWBITS (IFFF_READ | IFFF_WRITE) /* read/write bits */
- #define IFFF_FSEEK (1L<<1) /* forward seek only */
- #define IFFF_RSEEK (1L<<2) /* random seek */
- #define IFFF_RESERVED 0xFFFF0000L /* Don't touch these bits */
-
-
- /*****************************************************************************/
-
-
- /* When the library calls your stream handler, you'll be passed a pointer
- * to this structure as the "message packet".
- */
- struct IFFStreamCmd
- {
- LONG sc_Command; /* Operation to be performed (IFFCMD_) */
- APTR sc_Buf; /* Pointer to data buffer */
- LONG sc_NBytes; /* Number of bytes to be affected */
- };
-
-
- /*****************************************************************************/
-
-
- /* A node associated with a context on the iff_Stack. Each node
- * represents a chunk, the stack representing the current nesting
- * of chunks in the open IFF file. Each context node has associated
- * local context items in the (private) LocalItems list. The ID, type,
- * size and scan values describe the chunk associated with this node.
- *
- * This structure can only be allocated by iffparse.library
- */
- struct ContextNode
- {
- struct MinNode cn_Node;
- LONG cn_ID;
- LONG cn_Type;
- LONG cn_Size; /* Size of this chunk */
- LONG cn_Scan; /* # of bytes read/written so far */
- };
-
-
- /*****************************************************************************/
-
-
- /* Local context items live in the ContextNode's. Each class is identified
- * by its lci_Ident code and has a (private) purge vector for when the
- * parent context node is popped.
- *
- * This structure can only be allocated by iffparse.library
- */
- struct LocalContextItem
- {
- struct MinNode lci_Node;
- ULONG lci_ID;
- ULONG lci_Type;
- ULONG lci_Ident;
- };
-
-
- /*****************************************************************************/
-
-
- /* StoredProperty: a local context item containing the data stored
- * from a previously encountered property chunk.
- */
- struct StoredProperty
- {
- LONG sp_Size;
- APTR sp_Data;
- };
-
-
- /*****************************************************************************/
-
-
- /* Collection Item: the actual node in the collection list at which
- * client will look. The next pointers cross context boundaries so
- * that the complete list is accessable.
- */
- struct CollectionItem
- {
- struct CollectionItem *ci_Next;
- LONG ci_Size;
- APTR ci_Data;
- };
-
-
- /*****************************************************************************/
-
-
- /* Structure returned by OpenClipboard(). You may do CMD_POSTs and such
- * using this structure. However, once you call OpenIFF(), you may not
- * do any more of your own I/O to the clipboard until you call CloseIFF().
- */
- struct ClipboardHandle
- {
- struct IOClipReq cbh_Req;
- struct MsgPort cbh_CBport;
- struct MsgPort cbh_SatisfyPort;
- };
-
-
- /*****************************************************************************/
-
-
- /* IFF return codes. Most functions return either zero for success or
- * one of these codes. The exceptions are the read/write functions which
- * return positive values for number of bytes or records read or written,
- * or a negative error code. Some of these codes are not errors per sae,
- * but valid conditions such as EOF or EOC (End of Chunk).
- */
- #define IFFERR_EOF -1L /* Reached logical end of file */
- #define IFFERR_EOC -2L /* About to leave context */
- #define IFFERR_NOSCOPE -3L /* No valid scope for property */
- #define IFFERR_NOMEM -4L /* Internal memory alloc failed */
- #define IFFERR_READ -5L /* Stream read error */
- #define IFFERR_WRITE -6L /* Stream write error */
- #define IFFERR_SEEK -7L /* Stream seek error */
- #define IFFERR_MANGLED -8L /* Data in file is corrupt */
- #define IFFERR_SYNTAX -9L /* IFF syntax error */
- #define IFFERR_NOTIFF -10L /* Not an IFF file */
- #define IFFERR_NOHOOK -11L /* No call-back hook provided */
- #define IFF_RETURN2CLIENT -12L /* Client handler normal return */
-
-
- /*****************************************************************************/
-
-
- #define MAKE_ID(a,b,c,d) \
- ((ULONG) (a)<<24 | (ULONG) (b)<<16 | (ULONG) (c)<<8 | (ULONG) (d))
-
- /* Universal IFF identifiers */
- #define ID_FORM MAKE_ID('F','O','R','M')
- #define ID_LIST MAKE_ID('L','I','S','T')
- #define ID_CAT MAKE_ID('C','A','T',' ')
- #define ID_PROP MAKE_ID('P','R','O','P')
- #define ID_NULL MAKE_ID(' ',' ',' ',' ')
-
- /* Identifier codes for universally recognized local context items */
- #define IFFLCI_PROP MAKE_ID('p','r','o','p')
- #define IFFLCI_COLLECTION MAKE_ID('c','o','l','l')
- #define IFFLCI_ENTRYHANDLER MAKE_ID('e','n','h','d')
- #define IFFLCI_EXITHANDLER MAKE_ID('e','x','h','d')
-
-
- /*****************************************************************************/
-
-
- /* Control modes for ParseIFF() function */
- #define IFFPARSE_SCAN 0L
- #define IFFPARSE_STEP 1L
- #define IFFPARSE_RAWSTEP 2L
-
-
- /*****************************************************************************/
-
-
- /* Control modes for StoreLocalItem() function */
- #define IFFSLI_ROOT 1L /* Store in default context */
- #define IFFSLI_TOP 2L /* Store in current context */
- #define IFFSLI_PROP 3L /* Store in topmost FORM or LIST */
-
-
- /*****************************************************************************/
-
-
- /* Magic value for writing functions. If you pass this value in as a size
- * to PushChunk() when writing a file, the parser will figure out the
- * size of the chunk for you. If you know the size, is it better to
- * provide as it makes things faster.
- */
- #define IFFSIZE_UNKNOWN -1L
-
-
- /*****************************************************************************/
-
-
- /* Possible call-back command values */
- #define IFFCMD_INIT 0 /* Prepare the stream for a session */
- #define IFFCMD_CLEANUP 1 /* Terminate stream session */
- #define IFFCMD_READ 2 /* Read bytes from stream */
- #define IFFCMD_WRITE 3 /* Write bytes to stream */
- #define IFFCMD_SEEK 4 /* Seek on stream */
- #define IFFCMD_ENTRY 5 /* You just entered a new context */
- #define IFFCMD_EXIT 6 /* You're about to leave a context */
- #define IFFCMD_PURGELCI 7 /* Purge a LocalContextItem */
-
-
- /*****************************************************************************/
-
-
- /* Obsolete IFFParse definitions, here for source code compatibility only.
- * Please do NOT use in new code.
- *
- * #define IFFPARSE_V37_NAMES_ONLY to remove these older names
- */
- #ifndef IFFPARSE_V37_NAMES_ONLY
- #define IFFSCC_INIT IFFCMD_INIT
- #define IFFSCC_CLEANUP IFFCMD_CLEANUP
- #define IFFSCC_READ IFFCMD_READ
- #define IFFSCC_WRITE IFFCMD_WRITE
- #define IFFSCC_SEEK IFFCMD_SEEK
- #endif
-
-
- /*****************************************************************************/
-
-
- #endif /* IFFPARSE_H */
-