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#define MAGIC1 0 /* Should be 0x1b, marks Mac extension */
#define KIND 1 /* KIND == 0 marks end of archive */
#define FNAME 2
#define FILLER 33
#define FTYPE 34
#define FAUTH 38
#define FINFO 42
#define FDATA 50
#define FRSRC 54
#define FILLER 58
#define MAGIC2 59 /* Should be 0x1a, true Arc header start */
#define KIND2 60 /* Should be identical to KIND */
#define FNAME2 61 /* A PC-ified version of the filename */
#define SIZE 74
#define DATE 78
#define TIME 80
#define CRC 82
#define SIZE2 84 /* Not present if KIND == 1 */
#define HEADERBYTES 88
typedef struct fileHdr { /* 84 or 88 bytes */
char magic1;
char kind;
char fname[31];
char filler; /* ??? */
char ftype[4];
char fauth[4];
char finfo[8];
unsigned long dataLength;
unsigned long rsrcLength;
char filler;
char magic2;
char kind2;
char fname2[13];
unsigned long size;
unsigned short date;
unsigned short time;
unsigend short crc;
unsigned long size2; /* Identical to size; this is wrong for Arc! */
};
#define smallstored 1
#define stored 2
#define packed 3
#define squeezed 4
#define crunched1 5
#define crunched2 6
#define crunched3 7
#define crunched4 8
#define squashed 9
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