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/**	@file	test-a85e.c
	Convert binary input from stdin to ASCII-85 encoded text on stdout.

	This is an example how to used the dk4_a85_enc_t type.
*/

#include "dk4conf.h"

#include <stdio.h>
#if DK4_ON_WINDOWS
#include <io.h>
#endif

#include "dk4a85e.h"
#include "dk4edstm.h"



$!trace-include



int main(int argc, char *argv[])
{
  dk4_a85_enc_t	 a85e;		/* Encoder */
  const	char	*dptr;		/* Pointer to encoder output buffer */
  size_t	 sz;		/* Size of encoder output buffer */
  size_t	 i;		/* Current output buffer index to process */
  int		 c;		/* Input character */
  int		 linepos = 0;	/* Position within output text line */
#if DK4_ON_WINDOWS
  int		 oldmode;	/* Previous file mode for stdin */
#endif

  $!trace-init test-a85e.deb
  $? "+ main"

  /*	Set file mode for standard input to binary on Windows.
  */
#if DK4_ON_WINDOWS
  oldmode = _setmode(0, _O_BINARY);
#endif

  /*	Initialize encoder.
  */
  dk4a85_enc_init(&a85e, 1, NULL);

  /*	Process contents from stdin.
  */
  while (EOF != (c = fgetc(stdin))) {
    switch (dk4a85_enc_add(&a85e, (unsigned char)c, NULL)) {
      case DK4_EDSTM_FINISHED: {
        /*	Encoder indicates that output is available.
	*/
        dptr = NULL; sz = 0;
	if (0 != dk4a85_enc_output(&dptr, &sz, &a85e, NULL)) {
	  if ((NULL != dptr) && (0 < sz)) {
	    /*	Output really found, write to stdout.
	    */
	    for (i = 0; i < sz; i++) {
	      fputc(dptr[i], stdout);
	      if (++linepos >= 75) {
	        fputc('\n', stdout);
		linepos = 0;
	      }
	    }
	  }
	}
      } break;
    }
  }

  /*	Restore previous file mode for stdin on Windows
  */
#if DK4_ON_WINDOWS
  _setmode(0, oldmode);
#endif

  /*	Check for final unprocessed sequence in encoder.
  */
  switch (dk4a85_enc_finish(&a85e, NULL)) {
    case DK4_EDSTM_FINISHED: {
      /*	Encoder indicates that output is available.
      */
      dptr = NULL; sz = 0;
      if (0 != dk4a85_enc_output(&dptr, &sz, &a85e, NULL)) {
        if ((NULL != dptr) && (0 < sz)) {
	  /*  Output really found, write to stdout.
	  */
	  for (i = 0; i < sz; i++) {
	    fputc(dptr[i], stdout);
	    if (++linepos >= 75) {
	      fputc('\n', stdout);
	      linepos = 0;
	    }
	  }
	}
      }
    } break;
  }

  /*	Write EOD marker to output.
  */
  if (74 <= linepos) {
    fputc('\n', stdout);
  }
  fputs("~>\n", stdout);

  $? "- main 0"
  $!trace-end

  exit(0); return 0;
}