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zma.h

#include "zmahdr.h"

#define     Z_HDRSIZE   78

#define     Z_WHAT            0     /* What kind of data? */
#define     Z_HLEN            1     /* Header length */
#define     Z_BFLAGS    2     /* Boolean flags */
#define     Z_NEXT            4     /* Pointer to next entry */
#define     Z_CRLEN           8     /* Length compressed resource */
#define     Z_CDLEN           12    /* Length compressed data */
#define     Z_URLEN           16    /* Length uncompressed resource */
#define     Z_UDLEN           20    /* Length uncompressed data */
#define     Z_TYPE            24    /* File type */
#define     Z_AUTH            28    /* File creator */
#define Z_CONTS         28    /* Directory contents pointer; overlayed */
#define     Z_MDATE           32    /* Date */
#define     Z_COMMENT   36    /* Comment offset, currently unused */
#define     Z_FLAGS           40    /* Finder flags */
#define     Z_DCRC            42    /* Data crc */
#define     Z_RCRC            44    /* Resource crc */
#define     Z_FNAME           46    /* File name length and name */

typedef struct fileHdr {            /* 78 bytes */
      char        deleted;    /* Not in original, split off from: */
      char        what;       /* What kind?  Negative if deleted */
      unsigned char     hlen ;            /* Header length */
      unsigned short    boolFlags;  /* Boolean flags */
      unsigned long     next;       /* Next entry */
      unsigned long     compRLength;      /* The compressed lengths. */
      unsigned long     compDLength;      /* For dirs, the second is # entries */
      unsigned long     rsrcLength; /* The uncompressed lengths. */
      unsigned long     dataLength;
      unsigned long     fType;            /* file type */
      unsigned long     fCreator;   /* er... */
      unsigned long     modDate;    /* !restored-compat w/backup prgms */
      unsigned long     comment;    /* Comment offset */
      unsigned short    FndrFlags;  /* copy of Finder flags.  For our
                                    purposes, we can clear:
                                    busy,onDesk */
      unsigned short    dataCRC;    /* Data fork crc */
      unsigned short    rsrcCRC;    /* Resource fork crc */
      unsigned char     fName[32];  /* a STR32 */
      /* The following are overlayed in the original structure */
      unsigned long     conts;            /* Pointer to directory contents */
};

/* zma types (see what) */
#define     z_noth      0     /* ??? */
#define z_file    1     /* file is compressed */
#define z_plain   2     /* file is uncompressed */
#define     z_dir 3     /* directory */
#define     z_plug      4     /* for plug in, not supported */


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