#define NAME		"testFHUnpack"
#define DISTRIBUTION	"(Freeware) "
#define REVISION	"1"
#define SDI_ENDCODE_NOCTRLC

/* Programmheader

	Name:		testFHUnpack
	Author:		SDI
	Distribution:	Freeware
	Description:	easy file to file unpacker using FH's
	Compileropts:	-
	Linkeropts:	-l xpkmaster amiga

 1.0   02.04.97 : first version
 1.1   28.11.97 : moved chunk-hook into include file
*/

/* NOTE: You may pass option OFFSET, when packed data does not start at
   really file start */

#include <proto/exec.h>
#include <proto/dos.h>
#include <proto/xpkmaster.h>
#include "SDI_defines.h"
#include "chunkhook.c"

struct Library		*XpkBase	= 0;
ULONG			DosVersion	= 37;
struct RDArgs		*rda		= 0;
ULONG			fhin		= 0;
ULONG			fhout		= 0;

#define PARAM "FROM/A,TO/A,OFFSET/K/N"

void main(void)
{
  ULONG err;

  struct {
    STRPTR from;
    STRPTR to;
    ULONG  *offset;
  } args = {0, 0, 0};

  if(!(rda = ReadArgs(PARAM, (LONG *) &args, 0)) ||
  !(XpkBase = OpenLibrary(XPKNAME, 4)) ||
  !(fhin = Open(args.from, MODE_OLDFILE)) ||
  !(fhout = Open(args.to, MODE_NEWFILE)) ||
  (args.offset && Seek(fhin, *args.offset, OFFSET_BEGINNING) == -1))
    End(RETURN_FAIL);

  if((err = XpkUnpackTags(XPK_InFH, fhin, XPK_OutFH, fhout,
  XPK_ChunkHook, &chunkhook, TAG_DONE)))
  {
    XpkPrintFault(err, "Can't XpkUnpack");
    End(RETURN_FAIL);
  }

  End(RETURN_OK);
}

void end(void)
{
  if(fhout)	Close(fhout);
  if(fhin)	Close(fhin);
  if(XpkBase)	CloseLibrary(XpkBase);
  if(rda)	FreeArgs(rda);
}