/* AR.H for AR facility for OS-9 and OS-K */
/* minor adaptations to MSDOS and Turbo C compiler */
/* by Clarence Wilkerson */

#ifdef TURBOC
/* this is straight adaptation  */
/* #define getwd(x)   msgetw(x)
#define opndir(s)  msopndir(s)
#define nextdir(x) msnextdir(x)
#define mknod(s,x) mkdir(s)   */

#include <alloc.h>
#include <dir.h>
#define  DIRMAK 1
#define  DIRCHK 2

/* OS-9 puts error code into global variable errno */
#else
#include <modes.h>
#define  DIRMAK   S_IFDIR+S_IOEXEC+S_IOWRITE+S_IOREAD+S_IEXEC+S_IWRITE+S_IREAD
#define  DIRCHK   S_IFDIR+S_IREAD
#endif

/* #ifdef   OSK
#define  MSYNC    0x4AFC
#else */
#define  MSYNC    0x87CD
/* #endif */

#define  FALSE    (0)
#define  TRUE     (!FALSE)
#define  ERROR    (-1)
#define  HID      "+AR0.0+"
#define  HIDSIZ   7
#define  SUF      ".ar"
#define  SUFSIZ   3
#define  FNSIZ    65
#define  MAXLINE  256

#define  PLAIN    0                         /* plain text or object */
#define  SQ       1                      /* old fashion CPM squeeze */
#define  COMP1    2                        /* LZ compression type 1 */
#define  COMP2    3                        /* LZ comperssion type 2 */

/* possible problem with dir_addr */

typedef struct {
      char     dir_name[28];
      long     dir_addr;          /* assumes that 29th char is null */
      } DIRENT;


typedef struct {                             /* obvious definitions */
      char     fd_att;
      char     fd_own[2];
      char     fd_date[5];
      char     fd_link;
      char     fd_fsize[4];
      char     fd_dcr[3];
      } FILDES;

/* going to be some problems reading longs on 808X  CWW */

/* NOTE that a_size is on an even byte boundary */

typedef struct {
      char     a_hid[HIDSIZ+1];   /* header id string */
      char     a_name[FNSIZ+1];   /* name of the archived file */
      long     a_size;            /* size of archive (not virgin) file */
      char     a_type;            /* archive type - virg, packed, etc */
      char     a_stat;            /* status of file - good, deleted, .. */
      FILDES   a_attr;            /* attributes of the archived file */
      } HEADER;


typedef struct fn {
      struct fn *fn_link;                 /* link to next file name */
      char     fn_name[1];                       /* the name itself */
      } FN;