/*
 * This file is part of uudeview, the simple and friendly multi-part multi-
 * file uudecoder  program  (c) 1994-2001 by Frank Pilhofer. The author may
 * be contacted at fp@fpx.de
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 */

#ifdef HAVE_CONFIG_H
#include "config.h"
#endif

#ifdef SYSTEM_WINDLL
#include <windows.h>
#endif
#ifdef SYSTEM_OS2
#include <os2.h>
#endif

#include <sys/types.h>
#include <sys/stat.h>
#include <ctype.h>
#include <stdio.h>
#include <time.h>
#include <math.h>

#include <stdlib.h>
#include <string.h>
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#ifdef HAVE_ERRNO_H
#include <errno.h>
#endif

#include <uudeview.h>
#include <uuint.h>
#include <fptools.h>
#include <uustring.h>
#include <crc32.h>
#include <zlib.h>

/* for braindead systems */
#ifndef SEEK_SET
#ifdef L_BEGIN
#define SEEK_SET L_BEGIN
#else
#define SEEK_SET 0
#endif
#endif

char * uuencode_id = "$Id: uuencode.c,v 1.22 2002/04/02 10:04:52 fp Exp $";

#if 0
/*
 * the End-Of-Line string. MIME enforces CRLF, so that's what we use. Some
 * implementations of uudecode will complain about a missing end line, since
 * they look for "end^J" but find "end^J^M". We don't care - especially be-
 * cause they still decode the file properly despite this complaint.
 */

#ifndef EOLSTRING
#define EOLSTRING	"\015\012"
#endif

#else

/*
 * Argh. Some delivery software (inews) has problems with the CRLF
 * line termination. Let's try native EOL and see if we run into
 * any problems.
 * This involves opening output files in text mode instead of binary
 */

#ifndef EOLSTRING
#define EOLSTRING	"\n"
#endif

#endif


/*
 * =========================================================================
 * User-configurable settings end here. Don't spy below unless you know what
 * you're doing.
 * =========================================================================
 */

/*
 * Define End-Of-Line sequence
 */

#ifdef EOLSTRING
static unsigned char *eolstring = (unsigned char *) EOLSTRING;
#else
static unsigned char *eolstring = (unsigned char *) "\012";
#endif

/*
 * Content-Transfer-Encoding types for non-MIME encodings
 */

#define CTE_UUENC	"x-uuencode"
#define CTE_XXENC	"x-xxencode"
#define CTE_BINHEX	"x-binhex"
#define CTE_YENC	"x-yenc"

#define CTE_TYPE(y)	(((y)==B64ENCODED) ? "Base64"  : \
			 ((y)==UU_ENCODED) ? CTE_UUENC : \
			 ((y)==XX_ENCODED) ? CTE_XXENC : \
                         ((y)==PT_ENCODED) ? "8bit" : \
                         ((y)==QP_ENCODED) ? "quoted-printable" : \
			 ((y)==BH_ENCODED) ? CTE_BINHEX : \
			 ((y)==YENC_ENCODED) ? CTE_YENC : "x-oops")

/*
 * encoding tables
 */

unsigned char UUEncodeTable[64] =
{
  '`', '!', '"', '#', '$', '%', '&', '\'',
  '(', ')', '*', '+', ',', '-', '.', '/',
  '0', '1', '2', '3', '4', '5', '6', '7',
  '8', '9', ':', ';', '<', '=', '>', '?',
  '@', 'A', 'B', 'C', 'D', 'E', 'F', 'G',
  'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O',
  'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W',
  'X', 'Y', 'Z', '[', '\\',']', '^', '_'
};


unsigned char B64EncodeTable[64] =
{
  'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H',
  'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P',
  'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X',
  'Y', 'Z', 'a', 'b', 'c', 'd', 'e', 'f',
  'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n',
  'o', 'p', 'q', 'r', 's', 't', 'u', 'v',
  'w', 'x', 'y', 'z', '0', '1', '2', '3',
  '4', '5', '6', '7', '8', '9', '+', '/'
};

unsigned char XXEncodeTable[64] =
{
  '+', '-', '0', '1', '2', '3', '4', '5',
  '6', '7', '8', '9', 'A', 'B', 'C', 'D',
  'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L',
  'M', 'N', 'O', 'P', 'Q', 'R', 'S', 'T',
  'U', 'V', 'W', 'X', 'Y', 'Z', 'a', 'b',
  'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j',
  'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r',
  's', 't', 'u', 'v', 'w', 'x', 'y', 'z'
};

unsigned char BHEncodeTable[64] =
{
  '!', '"', '#', '$', '%', '&', '\'', '(',
  ')', '*', '+', ',', '-', '0', '1', '2',
  '3', '4', '5', '6', '8', '9', '@', 'A',
  'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I',
  'J', 'K', 'L', 'M', 'N', 'P', 'Q', 'R',
  'S', 'T', 'U', 'V', 'X', 'Y', 'Z', '[',
  '`', 'a', 'b', 'c', 'd', 'e', 'f', 'h',
  'i', 'j', 'k', 'l', 'm', 'p', 'q', 'r'
};

unsigned char HexEncodeTable[16] =
{
  '0', '1', '2', '3', '4', '5', '6', '7',
  '8', '9', 'A', 'B', 'C', 'D', 'E', 'F'
};

typedef struct
{
  char *extension;
  char *mimetype;
} mimemap;

/*
 * This table maps a file's extension into a Content-Type. The current
 * official list can be downloaded as
 *   ftp://ftp.isi.edu/in-notes/iana/assignments/media-type
 * I haven't listed any text types since it doesn't make sense to encode
 * them. Everything not on the list gets mapped to application/octet-stream
 */

static mimemap mimetable[] =
{
  { "gif",  "image/gif"        }, /* Grafics Interchange Format  */
  { "jpg",  "image/jpeg"       }, /* JFIF encoded files          */
  { "jpeg", "image/jpeg"       },
  { "tif",  "image/tiff"       }, /* Tag Image File Format       */
  { "tiff", "image/tiff"       },
  { "cgm",  "image/cgm"        }, /* Computer Graphics Metafile  */
  { "au",   "audio/basic"      }, /* 8kHz ulaw audio data        */
  { "mov",  "video/quicktime"  }, /* Apple Quicktime             */
  { "qt",   "video/quicktime"  }, /* Also infrequently used      */
  { "mpeg", "video/mpeg"       }, /* Motion Picture Expert Group */
  { "mpg",  "video/mpeg"       },
  { "mp2",  "video/mpeg"       }, /* dito, MPEG-2 encoded files  */
  { "mp3",  "audio/mpeg"       }, /* dito, MPEG-3 encoded files  */
  { "ps",   "application/postscript" }, /* Postscript Language   */
  { "zip",  "application/zip"  }, /* ZIP archive                 */
  { "doc",  "application/msword"},/* assume Microsoft Word       */
  { NULL,   NULL               }
};

/*
 * the order of the following two tables must match the
 * Encoding Types definition in uudeview.h
 */

/*
 * encoded bytes per line
 */

static int bpl[8] = { 0, 45, 57, 45, 45, 0, 0, 128 };

/*
 * tables
 */

static unsigned char *etables[5] =
{
  NULL,
  UUEncodeTable,
  B64EncodeTable,
  XXEncodeTable,
  BHEncodeTable
};

/*
 * variables to malloc upon initialization
 */

char *uuestr_itemp;
char *uuestr_otemp;

/*
 * Encode one part of the data stream
 */

static int
UUEncodeStream (FILE *outfile, FILE *infile, int encoding, long linperfile, crc32_t *crc, crc32_t *pcrc)
{
  unsigned char *itemp = (char *) uuestr_itemp;
  unsigned char *otemp = (char *) uuestr_otemp;
  unsigned char *optr, *table, *tptr;
  int index, count;
  long line=0;
  size_t llen;

  if (outfile==NULL || infile==NULL ||
      (encoding!=UU_ENCODED&&encoding!=XX_ENCODED&&encoding!=B64ENCODED&&
       encoding!=PT_ENCODED&&encoding!=QP_ENCODED&&encoding!=YENC_ENCODED))
    {
      UUMessage (uuencode_id, __LINE__, UUMSG_ERROR,
                 uustring (S_PARM_CHECK), "UUEncodeStream()");
      return UURET_ILLVAL;
    }

  /*
   * Special handling for plain text and quoted printable. Text is
   * read line oriented.
   */

  if (encoding == PT_ENCODED || encoding == QP_ENCODED)
    {
      while (!feof (infile) && (linperfile <= 0 || line < linperfile))
        {
          if (_FP_fgets (itemp, 255, infile) == NULL)
            {
              break;
            }

          itemp[255] = '\0';
          count = strlen (itemp);

          llen = 0;
          optr = otemp;

          /*
           * Busy Callback
           */

          if (UUBUSYPOLL(ftell(infile)-progress.foffset,progress.fsize))
            {
              UUMessage (uuencode_id, __LINE__, UUMSG_NOTE,
                         uustring (S_ENCODE_CANCEL));
              return UURET_CANCEL;
            }

          if (encoding == PT_ENCODED)
            {
              /*
               * If there is a line feed, replace by eolstring
               */
              if (count > 0 && itemp[count-1] == '\n')
                {
                  itemp[--count] = '\0';
                  if (fwrite (itemp, 1, count, outfile) != count ||
                      fwrite ((char *) eolstring, 1,
                              strlen(eolstring), outfile) != strlen (eolstring))
                    {
                      return UURET_IOERR;
                    }
                }
              else
                {
                  if (fwrite (itemp, 1, count, outfile) != llen)
                    {
                      return UURET_IOERR;
                    }
                }
            }
          else if (encoding == QP_ENCODED)
            {
              for (index=0; index<count; index++)
                {
                  if (llen == 0 && itemp[index] == '.')
                    {
                      /*
                       * Special rule: encode '.' at the beginning of a line, so
                       * that some mailers aren't confused.
                       */
                      *optr++ = '=';
                      *optr++ = HexEncodeTable[itemp[index] >> 4];
                      *optr++ = HexEncodeTable[itemp[index] & 0x0f];
                      llen += 3;
                    }
                  else if ((itemp[index] >= 33 && itemp[index] <= 60) ||
                           (itemp[index] >= 62 && itemp[index] <= 126) ||
                           itemp[index] == 9 || itemp[index] == 32)
                    {
                      *optr++ = itemp[index];
                      llen++;
                    }
                  else if (itemp[index] == '\n')
                    {
                      /*
                       * If the last character before EOL was a space or tab,
                       * we must encode it. If llen > 74, there's no space to do
                       * that, so generate a soft line break instead.
                       */

                      if (index>0 && (itemp[index-1] == 9 || itemp[index-1] == 32))
                        {
                          *(optr-1) = '=';
                          if (llen <= 74)
                            {
                              *optr++ = HexEncodeTable[itemp[index-1] >> 4];
                              *optr++ = HexEncodeTable[itemp[index-1] & 0x0f];
                              llen += 2;
                            }
                        }

                      if (fwrite (otemp, 1, llen, outfile) != llen ||
                          fwrite ((char *) eolstring, 1,
                                  strlen(eolstring), outfile) != strlen (eolstring))
                        {
                          return UURET_IOERR;
                        }

                      /*
                       * Fix the soft line break condition from above
                       */

                      if (index>0 && (itemp[index-1] == 9 || itemp[index-1] == 32) &&
                          *(optr-1) == '=')
                        {
                          otemp[0] = '=';
                          otemp[1] = HexEncodeTable[itemp[index-1] >> 4];
                          otemp[2] = HexEncodeTable[itemp[index-1] & 0x0f];

                          if (fwrite (otemp, 1, 3, outfile) != 3 ||
                              fwrite ((char *) eolstring, 1,
                                      strlen(eolstring), outfile) != strlen (eolstring))
                            {
                              return UURET_IOERR;
                            }
                        }

                      optr = otemp;
                      llen = 0;
                    }
                  else
                    {
                      *optr++ = '=';
                      *optr++ = HexEncodeTable[itemp[index] >> 4];
                      *optr++ = HexEncodeTable[itemp[index] & 0x0f];
                      llen += 3;
                    }

                  /*
                   * Lines must be shorter than 76 characters (not counting CRLF).
                   * If the line grows longer than that, we must include a soft
                   * line break.
                   */

                  if (itemp[index+1] != 0 && itemp[index+1] != '\n' &&
                      (llen >= 75 ||
                       (!((itemp[index+1] >= 33 && itemp[index+1] <= 60) ||
                          (itemp[index+1] >= 62 && itemp[index+1] <= 126)) &&
                        llen >= 73)))
                    {

                      *optr++ = '=';
                      llen++;

                      if (fwrite (otemp, 1, llen, outfile) != llen ||
                          fwrite ((char *) eolstring, 1,
                                  strlen(eolstring), outfile) != strlen (eolstring))
                        {
                          return UURET_IOERR;
                        }

                      optr = otemp;
                      llen = 0;
                    }
                }
            }

          line++;
        }

      return UURET_OK;
    }

  /*
   * Special handling for yEnc
   */

  if (encoding == YENC_ENCODED)
    {
      llen = 0;
      optr = otemp;

      while (!feof (infile) && (linperfile <= 0 || line < linperfile))
        {
          if ((count = fread (itemp, 1, 128, infile)) != 128)
            {
              if (count == 0)
                {
                  break;
                }
              else if (ferror (infile))
                {
                  return UURET_IOERR;
                }
            }

          if (pcrc)
            *pcrc = crc32(*pcrc, itemp, count);
          if (crc)
            *crc = crc32(*crc, itemp, count);

          line++;

          /*
           * Busy Callback
           */

          if (UUBUSYPOLL(ftell(infile)-progress.foffset,progress.fsize))
            {
              UUMessage (uuencode_id, __LINE__, UUMSG_NOTE,
                         uustring (S_ENCODE_CANCEL));
              return UURET_CANCEL;
            }

          for (index=0; index<count; index++)
            {
              if (llen > 127)
                {
                  if (fwrite (otemp, 1, llen, outfile) != llen ||
                      fwrite ((char *) eolstring, 1,
                              strlen(eolstring), outfile) != strlen (eolstring))
                    {
                      return UURET_IOERR;
                    }
                  llen = 0;
                  optr = otemp;
                }

              switch ((char) ((int) itemp[index] + 42))
                {
                case '\0':
//                case '\t':  yEnc 1.3 draft
                case '\n':
                case '\r':
                case '=':
                case '\033':
                  *optr++ = '=';
                  *optr++ = (char) ((int) itemp[index] + 42 + 64);
                  llen += 2;
                  break;

                case '.':
                  if (llen == 0)
                    {
                      *optr++ = '=';
                      *optr++ = (char) ((int) itemp[index] + 42 + 64);
                      llen += 2;
                    }
                  else
                    {
                      *optr++ = (char) ((int) itemp[index] + 42);
                      llen++;
                    }
                  break;

                default:
                  *optr++ = (char) ((int) itemp[index] + 42);
                  llen++;
                  break;
                }
            }
        }

      /*
       * write last line
       */

      if (llen)
        {
          if (fwrite (otemp, 1, llen, outfile) != llen ||
              fwrite ((char *) eolstring, 1,
                      strlen(eolstring), outfile) != strlen (eolstring))
            {
              return UURET_IOERR;
            }
        }

      return UURET_OK;
    }

  /*
   * Handling for binary encodings
   */

  /*
   * select charset
   */

  table = etables[encoding];

  if (table==NULL || bpl[encoding]==0)
    {
      UUMessage (uuencode_id, __LINE__, UUMSG_ERROR,
                 uustring (S_PARM_CHECK), "UUEncodeStream()");
      return UURET_ILLVAL;
    }

  while (!feof (infile) && (linperfile <= 0 || line < linperfile))
    {
      if ((count = fread (itemp, 1, bpl[encoding], infile)) != bpl[encoding])
        {
          if (count == 0)
            break;
          else if (ferror (infile))
            return UURET_IOERR;
        }

      optr = otemp;
      llen = 0;

      /*
       * Busy Callback
       */

      if (UUBUSYPOLL(ftell(infile)-progress.foffset,progress.fsize))
        {
          UUMessage (uuencode_id, __LINE__, UUMSG_NOTE,
                     uustring (S_ENCODE_CANCEL));
          return UURET_CANCEL;
        }

      /*
       * for UU and XX, encode the number of bytes as first character
       */

      if (encoding == UU_ENCODED || encoding == XX_ENCODED)
        {
          *optr++ = table[count];
          llen++;
        }

      /*
       * Main encoding
       */

      for (index=0; index<=count-3; index+=3, llen+=4)
        {
          *optr++ = table[itemp[index] >> 2];
          *optr++ = table[((itemp[index  ] & 0x03) << 4)|(itemp[index+1] >> 4)];
          *optr++ = table[((itemp[index+1] & 0x0f) << 2)|(itemp[index+2] >> 6)];
          *optr++ = table[  itemp[index+2] & 0x3f];
        }

      /*
       * Special handling for incomplete lines
       */

      if (index != count)
        {
          if (encoding == B64ENCODED)
            {
              if (count - index == 2)
                {
                  *optr++ = table[itemp[index] >> 2];
                  *optr++ = table[((itemp[index  ] & 0x03) << 4) |
                                  ((itemp[index+1] & 0xf0) >> 4)];
                  *optr++ = table[((itemp[index+1] & 0x0f) << 2)];
                  *optr++ = '=';
                }
              else if (count - index == 1)
                {
                  *optr++ = table[ itemp[index] >> 2];
                  *optr++ = table[(itemp[index] & 0x03) << 4];
                  *optr++ = '=';
                  *optr++ = '=';
                }
              llen += 4;
            }
          else if (encoding == UU_ENCODED || encoding == XX_ENCODED)
            {
              if (count - index == 2)
                {
                  *optr++ = table[itemp[index] >> 2];
                  *optr++ = table[((itemp[index  ] & 0x03) << 4) |
                                  ( itemp[index+1] >> 4)];
                  *optr++ = table[((itemp[index+1] & 0x0f) << 2)];
                  *optr++ = table[0];
                }
              else if (count - index == 1)
                {
                  *optr++ = table[ itemp[index] >> 2];
                  *optr++ = table[(itemp[index] & 0x03) << 4];
                  *optr++ = table[0];
                  *optr++ = table[0];
                }
              llen += 4;
            }
        }

      /*
       * end of line
       */

      tptr = eolstring;

      while (*tptr)
        *optr++ = *tptr++;

      *optr++ = '\0';
      llen   += strlen ((char *) eolstring);

      if (fwrite (otemp, 1, llen, outfile) != llen)
        return UURET_IOERR;

      line++;
    }
  return UURET_OK;
}

static int
UUEncodeStream_byFSize (FILE *outfile, FILE *infile, int encoding, long bpf, crc32_t *crc, crc32_t *pcrc)
{
  unsigned char *itemp = (char *) uuestr_itemp;
  unsigned char *otemp = (char *) uuestr_otemp;
  unsigned char *optr, *table, *tptr;
  int index, count;
  long offset=0;
  long line = 0;
  size_t llen;

  if (outfile==NULL || infile==NULL ||
      (encoding!=UU_ENCODED&&encoding!=XX_ENCODED&&encoding!=B64ENCODED&&
       encoding!=PT_ENCODED&&encoding!=QP_ENCODED&&encoding!=YENC_ENCODED))
    {
      return UURET_ILLVAL;
    }

  /*
   * Special handling for plain text and quoted printable. Text is
   * read line oriented.
   */

  long rest = bpf;
  long current = 0;

  ///FIXME

  if (encoding == PT_ENCODED || encoding == QP_ENCODED)
    {
      while (!feof (infile) && rest > 0 )
      {
        current = rest > 255 ? 255 : rest;

      if ((count = fread (itemp, sizeof(unsigned char), current, infile)) != 255)
      {
        if (count == 0)
          break;
        else if (ferror (infile))
          return UURET_IOERR;
      }

      rest -= count;
      itemp[count] = '\0';

      llen = 0;
      optr = otemp;

        /*
         * Busy Callback
         */

      if (UUBUSYPOLL(ftell(infile)-progress.foffset,progress.fsize))
          return UURET_CANCEL;

      if (encoding == PT_ENCODED)
      {
        size_t res;
        if ((res=fwrite (itemp, sizeof(unsigned char), count, outfile)) != count)
            return UURET_IOERR;
      }
          else if (encoding == QP_ENCODED)
          {
            for (index=0; index<count; index++)
              {
                if (llen == 0 && itemp[index] == '.')
                  {
                    /*
                     * Special rule: encode '.' at the beginning of a line, so
                     * that some mailers aren't confused.
                     */
                    *optr++ = '=';
                    *optr++ = HexEncodeTable[itemp[index] >> 4];
                    *optr++ = HexEncodeTable[itemp[index] & 0x0f];
                    llen += 3;
                  }
                else if ((itemp[index] >= 33 && itemp[index] <= 60) ||
                         (itemp[index] >= 62 && itemp[index] <= 126) ||
                         itemp[index] == 9 || itemp[index] == 32)
                  {
                    *optr++ = itemp[index];
                    llen++;
                  }
                else if (itemp[index] == '\n')
                  {
                    /*
                     * If the last character before EOL was a space or tab,
                     * we must encode it. If llen > 74, there's no space to do
                     * that, so generate a soft line break instead.
                     */

                    if (index>0 && (itemp[index-1] == 9 || itemp[index-1] == 32))
                      {
                        *(optr-1) = '=';
                        if (llen <= 74)
                          {
                            *optr++ = HexEncodeTable[itemp[index-1] >> 4];
                            *optr++ = HexEncodeTable[itemp[index-1] & 0x0f];
                            llen += 2;
                          }
                      }

                    if (fwrite (otemp, 1, llen, outfile) != llen ||
                        fwrite ((char *) eolstring, 1,
                                strlen(eolstring), outfile) != strlen (eolstring))
                      {
                        return UURET_IOERR;
                      }

                    /*
                     * Fix the soft line break condition from above
                     */

                    if (index>0 && (itemp[index-1] == 9 || itemp[index-1] == 32) &&
                        *(optr-1) == '=')
                      {
                        otemp[0] = '=';
                        otemp[1] = HexEncodeTable[itemp[index-1] >> 4];
                        otemp[2] = HexEncodeTable[itemp[index-1] & 0x0f];

                        if (fwrite (otemp, 1, 3, outfile) != 3 ||
                            fwrite ((char *) eolstring, 1,
                                    strlen(eolstring), outfile) != strlen (eolstring))
                          {
                            return UURET_IOERR;
                          }
                      }

                    optr = otemp;
                    llen = 0;
                  }
                else
                  {
                    *optr++ = '=';
                    *optr++ = HexEncodeTable[itemp[index] >> 4];
                    *optr++ = HexEncodeTable[itemp[index] & 0x0f];
                    llen += 3;
                  }

                /*
                 * Lines must be shorter than 76 characters (not counting CRLF).
                 * If the line grows longer than that, we must include a soft
                 * line break.
                 */

                if (itemp[index+1] != 0 && itemp[index+1] != '\n' &&
                    (llen >= 75 ||
                     (!((itemp[index+1] >= 33 && itemp[index+1] <= 60) ||
                        (itemp[index+1] >= 62 && itemp[index+1] <= 126)) &&
                      llen >= 73)))
                  {

                    *optr++ = '=';
                    llen++;

                    if (fwrite (otemp, 1, llen, outfile) != llen ||
                        fwrite ((char *) eolstring, 1,
                                strlen(eolstring), outfile) != strlen (eolstring))
                      {
                        return UURET_IOERR;
                      }

                    optr = otemp;
                    llen = 0;
                  }
              }
          }
        line++;
      }

      return UURET_OK;
    }

  /*
   * Special handling for yEnc
   */

  if (encoding == YENC_ENCODED)
  {
    llen = 0;
    optr = otemp;
    long rest = bpf;
    long current = 0;

    while (rest > 0)
    {
      current = rest > 128 ? 128 : rest;

      if ((count = fread (itemp, sizeof(unsigned char), current, infile)) != 128)
      {
        if (count == 0)
        {
          break;
        }
        else if (ferror (infile))
        {
          return UURET_IOERR;
        }

      }

      if (pcrc)
        *pcrc = crc32(*pcrc, itemp, count);
      if (crc)
        *crc = crc32(*crc, itemp, count);

      line++;

      /*
       * Busy Callback
       */

      if (UUBUSYPOLL(ftell(infile)-progress.foffset,progress.fsize))
        {
          UUMessage (uuencode_id, __LINE__, UUMSG_NOTE,
                     uustring (S_ENCODE_CANCEL));
          return UURET_CANCEL;
        }

      for (index=0; index<count; index++)
        {
          if (llen > 127 )
            {
              if (fwrite (otemp, sizeof(unsigned char), llen, outfile) != llen ||
                  fwrite ((char *) eolstring, sizeof(unsigned char),
                          strlen(eolstring), outfile) != strlen (eolstring))
                {
                  return UURET_IOERR;
                }
              llen = 0;
              optr = otemp;
            }

          char tmp = (char) ((int) itemp[index] + 42);

          switch ((char) ((int) itemp[index] + 42))
                          {
                          case '\0':
          //                case '\t':  yEnc 1.3 draft
                          case '\n':
                          case '\r':
                          case '=':
                          case '\033':
                            *optr++ = '=';
                            *optr++ = (char) ((int) itemp[index] + 42 + 64);
                            llen += 2;
                            break;

                          case '.':
                            if (llen == 0)
                              {
                                *optr++ = '=';
                                *optr++ = (char) ((int) itemp[index] + 42 + 64);
                                llen += 2;
                              }
                            else
                              {
                                *optr++ = (char) ((int) itemp[index] + 42);
                                llen++;
                              }
                            break;

                          default:
                            *optr++ = (char) ((int) itemp[index] + 42);
                            llen++;
                            break;
                          }

        }

        rest -= count;
    }


    /*
     * write last line
     */

    if (llen)
    {
      if (fwrite (otemp, 1, llen, outfile) != llen ||
          fwrite ((char *) eolstring, 1,
                  strlen(eolstring), outfile) != strlen (eolstring))
        {
          return UURET_IOERR;
        }
    }

    return UURET_OK;
  }

  /*
   * Handling for binary encodings
   */

  /*
   * select charset
   */

  table = etables[encoding];

  if (table==NULL || bpl[encoding]==0)
  {
    return UURET_ILLVAL;
  }

  while (!feof (infile) && rest > 0)
  {
    current = rest >  bpl[encoding] ?  bpl[encoding] : rest;
    if ((count = fread (itemp, 1, current, infile)) != bpl[encoding])
    {
      if (count == 0)
        break;
      else if (ferror (infile))
        return UURET_IOERR;
    }

    rest -= count;

    optr = otemp;
    llen = 0;

    /*
     * Busy Callback
     */

    if (UUBUSYPOLL(ftell(infile)-progress.foffset,progress.fsize))
      {
        UUMessage (uuencode_id, __LINE__, UUMSG_NOTE,
                   uustring (S_ENCODE_CANCEL));
        return UURET_CANCEL;
      }

    /*
     * for UU and XX, encode the number of bytes as first character
     */

    if (encoding == UU_ENCODED || encoding == XX_ENCODED)
      {
        *optr++ = table[count];
        llen++;
      }

    /*
     * Main encoding
     */

    for (index=0; index<=count-3; index+=3, llen+=4)
      {
        *optr++ = table[itemp[index] >> 2];
        *optr++ = table[((itemp[index  ] & 0x03) << 4)|(itemp[index+1] >> 4)];
        *optr++ = table[((itemp[index+1] & 0x0f) << 2)|(itemp[index+2] >> 6)];
        *optr++ = table[  itemp[index+2] & 0x3f];
      }

    /*
     * Special handling for incomplete lines
     */

    if (index != count)
      {
        if (encoding == B64ENCODED)
          {
            if (count - index == 2)
              {
                *optr++ = table[itemp[index] >> 2];
                *optr++ = table[((itemp[index  ] & 0x03) << 4) |
                                ((itemp[index+1] & 0xf0) >> 4)];
                *optr++ = table[((itemp[index+1] & 0x0f) << 2)];
                *optr++ = '=';
              }
            else if (count - index == 1)
              {
                *optr++ = table[ itemp[index] >> 2];
                *optr++ = table[(itemp[index] & 0x03) << 4];
                *optr++ = '=';
                *optr++ = '=';
              }
            llen += 4;
          }
        else if (encoding == UU_ENCODED || encoding == XX_ENCODED)
          {
            if (count - index == 2)
              {
                *optr++ = table[itemp[index] >> 2];
                *optr++ = table[((itemp[index  ] & 0x03) << 4) |
                                ( itemp[index+1] >> 4)];
                *optr++ = table[((itemp[index+1] & 0x0f) << 2)];
                *optr++ = table[0];
              }
            else if (count - index == 1)
              {
                *optr++ = table[ itemp[index] >> 2];
                *optr++ = table[(itemp[index] & 0x03) << 4];
                *optr++ = table[0];
                *optr++ = table[0];
              }
            llen += 4;
          }
      }

    /*
     * end of line
     */

    tptr = eolstring;

    while (*tptr)
      *optr++ = *tptr++;

    *optr++ = '\0';
    llen   += strlen ((char *) eolstring);

    if (fwrite (otemp, 1, llen, outfile) != llen)
      return UURET_IOERR;

    line++;
  }
  return UURET_OK;
}

/*
 * Encode as MIME multipart/mixed sub-message.
 */

int UUEXPORT
UUEncodeMulti (FILE *outfile, FILE *infile, char *infname, int encoding,
               char *outfname, char *mimetype, int filemode)
{
  mimemap *miter=mimetable;
  struct stat finfo;
  int res, themode;
  FILE *theifile;
  char *ptr;
  crc32_t crc;
  crc32_t *crcptr=NULL;

  if (outfile==NULL ||
      (infile == NULL && infname==NULL) ||
      (outfname==NULL && infname==NULL) ||
      (encoding!=UU_ENCODED&&encoding!=XX_ENCODED&&encoding!=B64ENCODED&&
       encoding!=PT_ENCODED&&encoding!=QP_ENCODED&&encoding!=YENC_ENCODED))
    {
      UUMessage (uuencode_id, __LINE__, UUMSG_ERROR,
                 uustring (S_PARM_CHECK), "UUEncodeMulti()");
      return UURET_ILLVAL;
    }

  progress.action = 0;

  if (infile==NULL)
    {
      if (stat (infname, &finfo) == -1)
        {
          UUMessage (uuencode_id, __LINE__, UUMSG_ERROR,
                     uustring (S_NOT_STAT_FILE),
                     infname, strerror (uu_errno=errno));
          return UURET_IOERR;
        }
      if ((theifile = fopen (infname, "rb")) == NULL)
        {
          UUMessage (uuencode_id, __LINE__, UUMSG_ERROR,
                     uustring (S_NOT_OPEN_FILE),
                     infname, strerror (uu_errno=errno));
          return UURET_IOERR;
        }
      themode = (filemode) ? filemode : ((int) finfo.st_mode & 0777);
      progress.fsize = (long) finfo.st_size;
    }
  else
    {
      if (fstat (fileno (infile), &finfo) != 0)
        {
          themode  = (filemode)?filemode:0644;
          progress.fsize = -1;
        }
      else
        {
          themode = (int) finfo.st_mode & 0777;
          progress.fsize = (long) finfo.st_size;
        }
      theifile = infile;
    }

  if (progress.fsize < 0)
    progress.fsize = -1;

  _FP_strncpy (progress.curfile, (outfname)?outfname:infname, 2048);

  progress.partno   = 1;
  progress.numparts = 1;
  progress.percent  = 0;
  progress.foffset  = 0;
  progress.action   = UUACT_ENCODING;

  /*
   * If not given from outside, select an appropriate Content-Type by
   * looking at the file's extension. If it is unknown, default to
   * Application/Octet-Stream
   */

  if (mimetype == NULL)
    {
      if ((ptr = _FP_strrchr ((outfname)?outfname:infname, '.')))
        {
          while (miter->extension && _FP_stricmp (ptr+1, miter->extension) != 0)
            miter++;
          mimetype = miter->mimetype;
        }
    }

  if (mimetype == NULL && (encoding == PT_ENCODED || encoding == QP_ENCODED))
    {
      mimetype = "text/plain";
    }

  /*
   * print sub-header
   */

  if (encoding != YENC_ENCODED)
    {
      fprintf (outfile, "Content-Type: %s%s",
               (mimetype)?mimetype:"Application/Octet-Stream",
               eolstring);
      fprintf (outfile, "Content-Transfer-Encoding: %s%s",
               CTE_TYPE(encoding), eolstring);
      fprintf (outfile, "Content-Disposition: attachment; filename=\"%s\"%s",
               UUFNameFilter ((outfname)?outfname:infname), eolstring);
      fprintf (outfile, "%s", eolstring);
    }

  if (encoding == UU_ENCODED || encoding == XX_ENCODED)
    {
      fprintf (outfile, "begin %o %s%s",
               (themode) ? themode : 0644,
               UUFNameFilter ((outfname)?outfname:infname),
               eolstring);
    }
  else if (encoding == YENC_ENCODED)
    {
      crc = crc32(0L, Z_NULL, 0);
      crcptr = &crc;
      if (progress.fsize == -1)
        {
          fprintf (outfile, "=ybegin line=128 name=%s%s",
                   UUFNameFilter ((outfname)?outfname:infname),
                   eolstring);
        }
      else
        {
          fprintf (outfile, "=ybegin line=128 size=%ld name=%s%s",
                   progress.fsize,
                   UUFNameFilter ((outfname)?outfname:infname),
                   eolstring);
        }
    }

  if ((res = UUEncodeStream (outfile, theifile, encoding, 0, crcptr, NULL)) != UURET_OK)
    {
      if (res != UURET_CANCEL)
        {
          UUMessage (uuencode_id, __LINE__, UUMSG_ERROR,
                     uustring (S_ERR_ENCODING),
                     UUFNameFilter ((infname)?infname:outfname),
                     (res==UURET_IOERR)?strerror(uu_errno):UUstrerror(res));
        }
      progress.action = 0;
      return res;
    }

  if (encoding == UU_ENCODED || encoding == XX_ENCODED)
    {
      fprintf (outfile, "%c%s",
               (encoding==UU_ENCODED) ? UUEncodeTable[0] : XXEncodeTable[0],
               eolstring);
      fprintf (outfile, "end%s", eolstring);
    }
  else if (encoding == YENC_ENCODED)
    {
      if (progress.fsize == -1)
        {
          fprintf (outfile, "=yend crc32=%08lx%s",
                   crc,
                   eolstring);
        }
      else
        {
          fprintf (outfile, "=yend size=%ld crc32=%08lx%s",
                   progress.fsize,
                   crc,
                   eolstring);
        }
    }

  /*
   * empty line at end does no harm
   */

  fprintf (outfile, "%s", eolstring);

  if (infile==NULL)
    fclose (theifile);

  progress.action = 0;
  return UURET_OK;
}

/*
 * Encode as MIME message/partial
 */

int UUEXPORT
UUEncodePartial (FILE *outfile, FILE *infile,
                 char *infname, int encoding,
                 char *outfname, char *mimetype,
                 int filemode, int partno, long linperfile, unsigned long* crcptr)
{
  mimemap *miter=mimetable;
  static FILE *theifile;
  static int numparts;
  int themode;
  struct stat finfo;
  long thesize;
  char *ptr;
  int res;
  crc32_t pcrc;
  crc32_t *pcrcptr=NULL;

  if ((outfname==NULL&&infname==NULL) || partno<=0 ||
      (infile == NULL&&infname==NULL) || outfile==NULL ||
      (encoding!=UU_ENCODED&&encoding!=XX_ENCODED&&encoding!=B64ENCODED&&
       encoding!=PT_ENCODED&&encoding!=QP_ENCODED&&encoding!=YENC_ENCODED))
    {
//    UUMessage (uuencode_id, __LINE__, UUMSG_ERROR,
//	       uustring (S_PARM_CHECK), "UUEncodePartial()");
      return UURET_ILLVAL;
    }

  /*
   * The first part needs a set of headers
   */

  progress.action = 0;

  if (partno == 1)
    {
      *crcptr = crc32(0L, Z_NULL, 0);

      if (infile==NULL)
        {
          if (stat (infname, &finfo) == -1)
            {
              UUMessage (uuencode_id, __LINE__, UUMSG_ERROR,
                         uustring (S_NOT_STAT_FILE),
                         infname, strerror (uu_errno=errno));
              return UURET_IOERR;
            }
          if ((theifile = fopen (infname, "rb")) == NULL)
            {
              UUMessage (uuencode_id, __LINE__, UUMSG_ERROR,
                         uustring (S_NOT_OPEN_FILE),
                         infname, strerror (uu_errno=errno));
              return UURET_IOERR;
            }
          if (linperfile <= 0)
            numparts = 1;
          else
            numparts = (int) (((long)finfo.st_size+(linperfile*bpl[encoding]-1))/
                              (linperfile*bpl[encoding]));

          themode  = (filemode) ? filemode : ((int) finfo.st_mode & 0777);
          thesize  = (long) finfo.st_size;
        }
      else
        {
          if (fstat (fileno (infile), &finfo) != 0)
            {
              UUMessage (uuencode_id, __LINE__, UUMSG_WARNING,
                         uustring (S_STAT_ONE_PART));
              numparts = 1;
              themode  = (filemode)?filemode:0644;
              thesize  = -1;
            }
          else
            {
              if (linperfile <= 0)
                numparts = 1;
              else
                numparts = (int) (((long)finfo.st_size+(linperfile*bpl[encoding]-1))/
                                  (linperfile*bpl[encoding]));

              themode =  (int) finfo.st_mode & 0777;
              thesize = (long) finfo.st_size;
            }
          theifile = infile;
        }

      _FP_strncpy (progress.curfile, (outfname)?outfname:infname, 2048);

      progress.totsize  = (thesize>=0) ? thesize : -1;
      progress.partno   = 1;
      progress.numparts = numparts;
      progress.percent  = 0;
      progress.foffset  = 0;

      /*
       * If not given from outside, select an appropriate Content-Type by
       * looking at the file's extension. If it is unknown, default to
       * Application/Octet-Stream
       */

      if (mimetype == NULL)
        {
          if ((ptr = _FP_strrchr ((outfname)?outfname:infname, '.')))
            {
              while (miter->extension && _FP_stricmp (ptr+1, miter->extension) != 0)
                miter++;
              mimetype = miter->mimetype;
            }
        }

      if (mimetype == NULL && (encoding==PT_ENCODED || encoding==QP_ENCODED))
        {
          mimetype = "text/plain";
        }

      /*
       * print sub-header
       */

      if (encoding != YENC_ENCODED)
        {
          fprintf (outfile, "MIME-Version: 1.0%s", eolstring);
          fprintf (outfile, "Content-Type: %s%s",
                   (mimetype)?mimetype:"Application/Octet-Stream",
                   eolstring);
          fprintf (outfile, "Content-Transfer-Encoding: %s%s",
                   CTE_TYPE(encoding), eolstring);
          fprintf (outfile, "Content-Disposition: attachment; filename=\"%s\"%s",
                   UUFNameFilter ((outfname)?outfname:infname), eolstring);
        }

      fprintf (outfile, "%s", eolstring);

      /*
       * for the first part of UU or XX messages, print a begin line
       */

      if (encoding == UU_ENCODED || encoding == XX_ENCODED)
        {
          fprintf (outfile, "begin %o %s%s",
                   (themode) ? themode : ((filemode)?filemode:0644),
                   UUFNameFilter ((outfname)?outfname:infname), eolstring);
        }
    }
  if (encoding == YENC_ENCODED)
    {
      pcrc = crc32(0L, Z_NULL, 0);
      pcrcptr = &pcrc;
      if (numparts != 1)
        {
          if (progress.totsize == -1)
            {
              fprintf (outfile, "=ybegin part=%d line=128 name=%s%s",
                       partno,
                       UUFNameFilter ((outfname)?outfname:infname),
                       eolstring);
            }
          else
            {
              fprintf (outfile, "=ybegin part=%d line=128 size=%ld name=%s%s",
                       partno,
                       progress.totsize,
                       UUFNameFilter ((outfname)?outfname:infname),
                       eolstring);
            }

          fprintf (outfile, "=ypart begin=%ld end=%ld%s",
                   (partno-1)*linperfile*128+1,
                   (partno*linperfile*128) < progress.totsize ?
                   (partno*linperfile*128) : progress.totsize,
                   eolstring);
        }
      else
        {
          if (progress.totsize == -1)
            {
              fprintf (outfile, "=ybegin line=128 name=%s%s",
                       UUFNameFilter ((outfname)?outfname:infname),
                       eolstring);
            }
          else
            {
              fprintf (outfile, "=ybegin line=128 size=%ld name=%s%s",
                       progress.totsize,
                       UUFNameFilter ((outfname)?outfname:infname),
                       eolstring);
            }
        }
    }

  /*
   * update progress information
   */

  progress.partno  = partno;
  progress.percent = 0;
  progress.foffset = ftell (theifile);

  if (progress.totsize <= 0)
    progress.fsize = -1;
  else if (linperfile <= 0)
    progress.fsize = progress.totsize;
  else if (progress.foffset+linperfile*bpl[encoding] > progress.totsize)
    progress.fsize = progress.totsize - progress.foffset;
  else
    progress.fsize = linperfile*bpl[encoding];

  progress.action  = UUACT_ENCODING;

  if ((res = UUEncodeStream (outfile, theifile, encoding, linperfile,
                             crcptr, pcrcptr)) != UURET_OK)
    {
      if (infile==NULL) fclose (theifile);
      if (res != UURET_CANCEL)
        {
          UUMessage (uuencode_id, __LINE__, UUMSG_ERROR,
                     uustring (S_ERR_ENCODING),
                     UUFNameFilter ((outfname)?outfname:infname),
                     (res==UURET_IOERR)?strerror(uu_errno):UUstrerror (res));
        }
      progress.action = 0;
      return res;
    }

  /*
   * print end line
   */

  if (feof (theifile) &&
      (encoding == UU_ENCODED || encoding == XX_ENCODED))
    {
      fprintf (outfile, "%c%s",
               (encoding==UU_ENCODED) ? UUEncodeTable[0] : XXEncodeTable[0],
               eolstring);
      fprintf (outfile, "end%s", eolstring);
    }
  else if (encoding == YENC_ENCODED)
    {
      if (numparts != 1)
        {
          fprintf (outfile, "=yend size=%ld part=%d pcrc32=%08lx",
                   (partno*linperfile*128) < progress.totsize ?
                   linperfile*128 : (progress.totsize-(partno-1)*linperfile*128),
                   partno,
                   pcrc);
        }
      else
        {
          fprintf (outfile, "=yend size=%ld",
                   progress.totsize);
        }
      if (feof (theifile))
        fprintf (outfile, " crc32=%08lx", *crcptr);
      fprintf (outfile, "%s", eolstring);
    }

  /*
   * empty line at end does no harm
   */

  if (encoding != PT_ENCODED && encoding != QP_ENCODED)
    {
      fprintf (outfile, "%s", eolstring);
    }

  if (infile==NULL)
    {
      if (res != UURET_OK)
        {
          progress.action = 0;
          fclose (theifile);
          return res;
        }
      if (feof (theifile))
        {
          progress.action = 0;
          fclose (theifile);
          return UURET_OK;
        }
      return UURET_CONT;
    }

  /*
   * leave progress.action as-is
   */

  return UURET_OK;
}

int UUEXPORT
UUEncodePartial_byFSize (FILE *outfile, FILE *infile,
                         char *infname, int encoding,
                         char *outfname, char *mimetype,
                         int filemode, int partno, long bpf, unsigned long* crcptr)
{
  mimemap *miter=mimetable;
  static FILE *theifile;
  int themode, numparts;
  struct stat finfo;
  long thesize;
  char *ptr;
  int res;
  crc32_t pcrc;
  crc32_t *pcrcptr=NULL;

  if ((outfname==NULL&&infname==NULL) || partno<=0 ||
      (infile == NULL&&infname==NULL) || outfile==NULL ||
      (encoding!=UU_ENCODED&&encoding!=XX_ENCODED&&encoding!=B64ENCODED&&
       encoding!=PT_ENCODED&&encoding!=QP_ENCODED&&encoding!=YENC_ENCODED))
    {
      return UURET_ILLVAL;
    }

  /*
   * The first part needs a set of headers
   */

  progress.action = 0;

  if (partno == 1)
    {
      *crcptr = crc32(0L, Z_NULL, 0);

      if (infile==NULL)
        {
          if (stat (infname, &finfo) == -1)
          {
            UUMessage (uuencode_id, __LINE__, UUMSG_ERROR,
                       uustring (S_NOT_STAT_FILE),
                       infname, strerror (uu_errno=errno));
            return UURET_IOERR;
          }
          if ((theifile = fopen (infname, "rb")) == NULL)
          {
            UUMessage (uuencode_id, __LINE__, UUMSG_ERROR,
                       uustring (S_NOT_OPEN_FILE),
                       infname, strerror (uu_errno=errno));
            return UURET_IOERR;
          }

          if (finfo.st_size <= bpf)
            numparts = 1;
          else
            numparts = (int) (ceil((double)finfo.st_size / (double)bpf));

          themode  = (filemode) ? filemode : ((int) finfo.st_mode & 0777);
          thesize  = (long) finfo.st_size;
        }
      else
        {
          if (fstat (fileno (infile), &finfo) != 0)
            {
              UUMessage (uuencode_id, __LINE__, UUMSG_WARNING,
                         uustring (S_STAT_ONE_PART));
              numparts = 1;
              themode  = (filemode)?filemode:0644;
              thesize  = -1;
            }
          else
            {
              themode =  (int) finfo.st_mode & 0777;
              thesize = (long) finfo.st_size;

              if (finfo.st_size <= bpf)
                numparts = 1;
              else
                numparts = (int) (ceill(thesize / bpf));


            }
          theifile = infile;
        }

      _FP_strncpy (progress.curfile, (outfname)?outfname:infname, 2048);

      progress.totsize  = (thesize>=0) ? thesize : -1;
      progress.partno   = 1;
      progress.numparts = numparts;
      progress.percent  = 0;
      progress.foffset  = 0;

      /*
       * If not given from outside, select an appropriate Content-Type by
       * looking at the file's extension. If it is unknown, default to
       * Application/Octet-Stream
       */

      if (mimetype == NULL)
        {
          if ((ptr = _FP_strrchr ((outfname)?outfname:infname, '.')))
            {
              while (miter->extension && _FP_stricmp (ptr+1, miter->extension) != 0)
                miter++;
              mimetype = miter->mimetype;
            }
        }

      if (mimetype == NULL && (encoding==PT_ENCODED || encoding==QP_ENCODED))
        {
          mimetype = "text/plain";
        }


      /*
       * print sub-header
       */

//      if (encoding != YENC_ENCODED)
//      {
//        fprintf (outfile, "MIME-Version: 1.0%s", eolstring);
//        fprintf (outfile, "Content-Type: Message/Partial; number=%d; total=%d;%s",
//               partno, numparts, eolstring);
//        fprintf (outfile, "Content-Transfer-Encoding: %s%s",
//                 CTE_TYPE(encoding), eolstring);
//        fprintf (outfile, "Content-Disposition: attachment; filename=\"%s\"%s",
//                 UUFNameFilter ((outfname)?outfname:infname), eolstring);
//      }
//      fprintf (outfile, "%s", eolstring);

      /*
       * for the first part of UU or XX messages, print a begin line
       */

      if (encoding == UU_ENCODED || encoding == XX_ENCODED)
        {
          fprintf (outfile, "begin %o %s%s",
                   (themode) ? themode : ((filemode)?filemode:0644),
                   UUFNameFilter ((outfname)?outfname:infname), eolstring);
        }
    }

  if (encoding == YENC_ENCODED)
    {
      pcrc = crc32(0L, Z_NULL, 0);
      pcrcptr = &pcrc;
      if (numparts != 1)
        {
          if (progress.totsize == -1)
            {
              fprintf (outfile, "=ybegin part=%d line=128 name=%s%s",
                       partno,
                       UUFNameFilter ((outfname)?outfname:infname),
                       eolstring);
            }
          else
            {
              fprintf (outfile, "=ybegin part=%d line=128 size=%ld name=%s%s",
                       partno,
                       progress.totsize,
                       UUFNameFilter ((outfname)?outfname:infname),
                       eolstring);
            }

          fprintf (outfile, "=ypart begin=%ld end=%ld%s",
                   (partno-1)*bpf+1,
                   (partno*bpf) < progress.totsize ?
                   (partno*bpf) : progress.totsize,
                   eolstring);
        }
      else
        {

          if (progress.totsize == -1)
            {
              fprintf (outfile, "=ybegin line=128 name=%s%s",
                       UUFNameFilter ((outfname)?outfname:infname),
                       eolstring);
            }
          else
            {
              fprintf (outfile, "=ybegin line=128 size=%ld name=%s%s",
                       progress.totsize,
                       UUFNameFilter ((outfname)?outfname:infname),
                       eolstring);
            }
        }
    }

  /*
   * update progress information
   */

  progress.partno  = partno;
  progress.percent = 0;
  progress.foffset = ftell (theifile);

  if (progress.totsize <= 0)
    progress.fsize = -1;
  else if (bpf <= 0)
    progress.fsize = progress.totsize;
  else if (progress.foffset+ bpf > progress.totsize)
    progress.fsize = progress.totsize - progress.foffset;
  else
    progress.fsize = bpf;

  progress.action  = UUACT_ENCODING;

  if ((res = UUEncodeStream_byFSize (outfile, theifile, encoding, bpf,
                             crcptr, pcrcptr)) != UURET_OK)
  {
    if (infile==NULL) fclose (theifile);
    if (res != UURET_CANCEL)
      {
        UUMessage (uuencode_id, __LINE__, UUMSG_ERROR,
                   uustring (S_ERR_ENCODING),
                   UUFNameFilter ((outfname)?outfname:infname),
                   (res==UURET_IOERR)?strerror(uu_errno):UUstrerror (res));
      }
    progress.action = 0;
    return res;
  }

  /*
   * print end line
   */

  if (feof (theifile) &&
      (encoding == UU_ENCODED || encoding == XX_ENCODED))
    {
      fprintf (outfile, "%c%s",
               (encoding==UU_ENCODED) ? UUEncodeTable[0] : XXEncodeTable[0],
               eolstring);
      fprintf (outfile, "end%s", eolstring);
    }
  else if (encoding == YENC_ENCODED)
  {
    if (numparts != 1)
      {
        fprintf (outfile, "=yend size=%ld part=%d pcrc32=%08lx",
                 (partno*bpf) < progress.totsize ?
                 bpf : (progress.totsize-(partno-1)*bpf),
                 partno,
                 pcrc);
      }
    else
      {
        fprintf (outfile, "=yend size=%ld",
                 progress.totsize);
      }
    if (feof (theifile))
      fprintf (outfile, " crc32=%08lx", *crcptr);
    fprintf (outfile, "%s", eolstring);
  }

  /*
   * empty line at end does no harm
   */

  if (encoding != PT_ENCODED && encoding != QP_ENCODED)
  {
    fprintf (outfile, "%s", eolstring);
  }

  if (infile==NULL)
  {
    if (res != UURET_OK)
      {
        progress.action = 0;
        fclose (theifile);
        return res;
      }
    if (feof (theifile))
      {
        progress.action = 0;
        fclose (theifile);
        return UURET_OK;
      }
    return UURET_CONT;
  }

  /*
   * leave progress.action as-is
   */

  return UURET_OK;
}

/*
 * send output to a stream, don't do any headers at all
 */

int UUEXPORT
UUEncodeToStream (FILE *outfile, FILE *infile,
                  char *infname, int encoding,
                  char *outfname, int filemode)
{
  struct stat finfo;
  FILE *theifile;
  int themode;
  int res;
  crc32_t crc;
  crc32_t *crcptr=NULL;

  if (outfile==NULL ||
      (infile == NULL&&infname==NULL) ||
      (outfname==NULL&&infname==NULL) ||
      (encoding!=UU_ENCODED&&encoding!=XX_ENCODED&&encoding!=B64ENCODED&&
       encoding!=PT_ENCODED&&encoding!=QP_ENCODED&&encoding!=YENC_ENCODED))
    {
      UUMessage (uuencode_id, __LINE__, UUMSG_ERROR,
                 uustring (S_PARM_CHECK), "UUEncodeToStream()");
      return UURET_ILLVAL;
    }

  progress.action = 0;

  if (infile==NULL)
    {
      if (stat (infname, &finfo) == -1)
        {
          UUMessage (uuencode_id, __LINE__, UUMSG_ERROR,
                     uustring (S_NOT_STAT_FILE),
                     infname, strerror (uu_errno=errno));
          return UURET_IOERR;
        }
      if ((theifile = fopen (infname, "rb")) == NULL)
        {
          UUMessage (uuencode_id, __LINE__, UUMSG_ERROR,
                     uustring (S_NOT_OPEN_FILE),
                     infname, strerror (uu_errno=errno));
          return UURET_IOERR;
        }
      themode = (filemode) ? filemode : ((int) finfo.st_mode & 0777);
      progress.fsize = (long) finfo.st_size;
    }
  else
    {
      if (fstat (fileno (infile), &finfo) == -1)
        {
          /* gotta live with it */
          themode = 0644;
          progress.fsize = -1;
        }
      else
        {
          themode = (filemode) ? filemode : ((int) finfo.st_mode & 0777);
          progress.fsize = (long) finfo.st_size;
        }
      theifile = infile;
    }

  if (progress.fsize < 0)
    progress.fsize = -1;

  _FP_strncpy (progress.curfile, (outfname)?outfname:infname, 2048);

  progress.partno   = 1;
  progress.numparts = 1;
  progress.percent  = 0;
  progress.foffset  = 0;
  progress.action   = UUACT_ENCODING;

  if (encoding == UU_ENCODED || encoding == XX_ENCODED)
    {
      fprintf (outfile, "begin %o %s%s",
               (themode) ? themode : 0644,
               UUFNameFilter ((outfname)?outfname:infname),
               eolstring);
    }
  else if (encoding == YENC_ENCODED)
    {
      crc = crc32(0L, Z_NULL, 0);
      crcptr = &crc;
      if (progress.fsize == -1)
        {
          fprintf (outfile, "=ybegin line=128 name=%s%s",
                   UUFNameFilter ((outfname)?outfname:infname),
                   eolstring);
        }
      else
        {
          fprintf (outfile, "=ybegin line=128 size=%ld name=%s%s",
                   progress.fsize,
                   UUFNameFilter ((outfname)?outfname:infname),
                   eolstring);
        }
    }

  if ((res = UUEncodeStream (outfile, theifile, encoding, 0, crcptr, NULL)) != UURET_OK)
    {
      if (res != UURET_CANCEL)
        {
          UUMessage (uuencode_id, __LINE__, UUMSG_ERROR,
                     uustring (S_ERR_ENCODING),
                     UUFNameFilter ((infname)?infname:outfname),
                     (res==UURET_IOERR)?strerror(uu_errno):UUstrerror (res));
        }
      progress.action = 0;
      return res;
    }

  if (encoding == UU_ENCODED || encoding == XX_ENCODED)
    {
      fprintf (outfile, "%c%s",
               (encoding==UU_ENCODED) ? UUEncodeTable[0] : XXEncodeTable[0],
               eolstring);
      fprintf (outfile, "end%s", eolstring);
    }
  else if (encoding == YENC_ENCODED)
    {
      if (progress.fsize == -1)
        {
          fprintf (outfile, "=yend crc32=%08lx%s",
                   crc,
                   eolstring);
        }
      else
        {
          fprintf (outfile, "=yend size=%ld crc32=%08lx%s",
                   progress.fsize,
                   crc,
                   eolstring);
        }
    }

  /*
   * empty line at end does no harm
   */

  fprintf (outfile, "%s", eolstring);

  if (infile==NULL) fclose (theifile);
  progress.action = 0;

  return UURET_OK;
}

/*
 * Encode to files on disk, don't generate any headers
 */

int UUEXPORT
UUEncodeToFile (FILE *infile, char *infname, int encoding,
                char *outfname, char *diskname, long linperfile)
{
  int part, numparts, len, filemode, res;
  char *oname=NULL, *optr, *ptr;
  FILE *theifile, *outfile;
  struct stat finfo;
  crc32_t pcrc, crc;
  crc32_t *pcrcptr=NULL, *crcptr=NULL;

  if ((diskname==NULL&&infname==NULL) ||
      (outfname==NULL&&infname==NULL) || (infile==NULL&&infname==NULL) ||
      (encoding!=UU_ENCODED&&encoding!=XX_ENCODED&&encoding!=B64ENCODED&&
       encoding!=PT_ENCODED&&encoding!=QP_ENCODED&&encoding!=YENC_ENCODED))
    {
      UUMessage (uuencode_id, __LINE__, UUMSG_ERROR,
                 uustring (S_PARM_CHECK), "UUEncodeToFile()");
      return UURET_ILLVAL;
    }

  if (diskname)
    {
      if ((ptr = strchr (diskname, '/')) == NULL)
        ptr = strchr (diskname, '\\');
      if (ptr)
        {
          len = strlen (diskname) + ((uuencodeext)?strlen(uuencodeext):3) + 5;

          if ((oname = malloc (len)) == NULL)
            {
              UUMessage (uuencode_id, __LINE__, UUMSG_ERROR,
                         uustring (S_OUT_OF_MEMORY), len);
              return UURET_NOMEM;
            }
          sprintf (oname, "%s", diskname);
        }
      else
        {
          len = ((uusavepath)?strlen(uusavepath):0) + strlen (diskname)
                + ((uuencodeext)?strlen(uuencodeext):0) + 5;

          if ((oname = malloc (len)) == NULL)
            {
              UUMessage (uuencode_id, __LINE__, UUMSG_ERROR,
                         uustring (S_OUT_OF_MEMORY), len);
              return UURET_NOMEM;
            }
          sprintf (oname, "%s%s", (uusavepath)?uusavepath:"", diskname);
        }
    }
  else
    {
      len = ((uusavepath) ? strlen (uusavepath) : 0) +
            strlen(UUFNameFilter(infname)) +
            ((uuencodeext)?strlen(uuencodeext):0) + 5;

      if ((oname = malloc (len)) == NULL)
        {
          UUMessage (uuencode_id, __LINE__, UUMSG_ERROR,
                     uustring (S_OUT_OF_MEMORY), len);
          return UURET_NOMEM;
        }
      optr = UUFNameFilter (infname);
      sprintf (oname, "%s%s",
               (uusavepath)?uusavepath:"",
               (*optr=='.')?optr+1:optr);
    }

  /*
   * optr points after the last dot, so that we can print the part number
   * there.
   */

  optr = _FP_strrchr (oname, '.');
  if (optr==NULL || strchr (optr, '/')!=NULL || strchr (optr, '\\')!=NULL)
    {
      optr = oname + strlen (oname);
      *optr++ = '.';
    }
  else if (optr==oname || *(optr-1)=='/' || *(optr-1)=='\\')
    {
      optr = oname + strlen (oname);
      *optr++ = '.';
    }
  else
    optr++;

  progress.action = 0;

  if (infile==NULL)
    {
      if (stat (infname, &finfo) == -1)
        {
          UUMessage (uuencode_id, __LINE__, UUMSG_ERROR,
                     uustring (S_NOT_STAT_FILE),
                     infname, strerror (uu_errno=errno));
          _FP_free (oname);
          return UURET_IOERR;
        }
      if ((theifile = fopen (infname, "rb")) == NULL)
        {
          UUMessage (uuencode_id, __LINE__, UUMSG_ERROR,
                     uustring (S_NOT_OPEN_FILE),
                     infname, strerror (uu_errno=errno));
          _FP_free (oname);
          return UURET_IOERR;
        }
      if (linperfile <= 0)
        numparts = 1;
      else
        numparts = (int) (((long)finfo.st_size + (linperfile*bpl[encoding]-1)) /
                          (linperfile*bpl[encoding]));

      filemode = (int) finfo.st_mode & 0777;
      progress.totsize = (long) finfo.st_size;
    }
  else
    {
      if (fstat (fileno (infile), &finfo) == -1)
        {
          /* gotta live with it */
          filemode = 0644;
          numparts = -1;
          progress.totsize = -1;
        }
      else
        {
          if (linperfile <= 0)
            numparts = 1;
          else
            numparts = (int) (((long)finfo.st_size+(linperfile*bpl[encoding]-1))/
                              (linperfile*bpl[encoding]));

          filemode = (int) finfo.st_mode & 0777;
          progress.totsize = -1;
        }
      theifile = infile;
    }

  _FP_strncpy (progress.curfile, (outfname)?outfname:infname, 2048);

  progress.totsize  = (progress.totsize<0) ? -1 : progress.totsize;
  progress.numparts = numparts;

  for (part=1; !feof (theifile); part++)
    {
      /*
       * Attach extension
       */
      if (progress.numparts==1 && progress.totsize!=-1 && uuencodeext!=NULL)
        strcpy  (optr, uuencodeext);
      else
        sprintf (optr, "%03d", part);

      /*
       * check if target file exists
       */

      if (!uu_overwrite)
        {
          if (stat (oname, &finfo) == 0)
            {
              UUMessage (uuencode_id, __LINE__, UUMSG_ERROR,
                         uustring (S_TARGET_EXISTS), oname);
              if (infile==NULL) fclose (theifile);
              progress.action = 0;
              free (oname);
              return UURET_EXISTS;
            }
        }

      /*
       * update progress information
       */

      progress.action  = 0;
      progress.partno  = part;
      progress.percent = 0;
      progress.foffset = ftell (theifile);

      if (progress.totsize == -1)
        progress.fsize = -1;
      else if (linperfile <= 0)
        progress.fsize = progress.totsize;
      else if (progress.foffset+linperfile*bpl[encoding] > progress.totsize)
        progress.fsize = progress.totsize - progress.foffset;
      else
        progress.fsize = linperfile*bpl[encoding];

      progress.action  = UUACT_ENCODING;

      if ((outfile = fopen (oname, "w")) == NULL)
        {
          UUMessage (uuencode_id, __LINE__, UUMSG_ERROR,
                     uustring (S_NOT_OPEN_TARGET),
                     oname, strerror (uu_errno = errno));
          if (infile==NULL) fclose (theifile);
          progress.action = 0;
          free (oname);
          return UURET_IOERR;
        }

      if (encoding != YENC_ENCODED)
        {
          fprintf (outfile, "%s", eolstring);
          fprintf (outfile, "_=_ %s", eolstring);
          if (numparts == -1)
            fprintf (outfile, "_=_ Part %03d of file %s%s",
                     part, UUFNameFilter ((outfname)?outfname:infname),
                     eolstring);
          else
            fprintf (outfile, "_=_ Part %03d of %03d of file %s%s",
                     part, numparts,
                     UUFNameFilter ((outfname)?outfname:infname),
                     eolstring);
          fprintf (outfile, "_=_ %s", eolstring);
          fprintf (outfile, "%s", eolstring);
        }

      if (part==1 && (encoding == UU_ENCODED || encoding == XX_ENCODED))
        {
          fprintf (outfile, "begin %o %s%s",
                   (filemode)?filemode : 0644,
                   UUFNameFilter ((outfname)?outfname:infname),
                   eolstring);
        }
      else if (encoding == YENC_ENCODED)
        {
          if (!crcptr)
            {
              crc = crc32(0L, Z_NULL, 0);
              crcptr = &crc;
            }
          pcrc = crc32(0L, Z_NULL, 0);
          pcrcptr = &pcrc;
          if (numparts != 1)
            {
              if (progress.totsize == -1)
                {
                  fprintf (outfile, "=ybegin part=%d line=128 name=%s%s",
                           part,
                           UUFNameFilter ((outfname)?outfname:infname),
                           eolstring);
                }
              else
                {
                  fprintf (outfile, "=ybegin part=%d line=128 size=%ld name=%s%s",
                           part,
                           progress.totsize,
                           UUFNameFilter ((outfname)?outfname:infname),
                           eolstring);
                }

              fprintf (outfile, "=ypart begin=%ld end=%ld%s",
                       (part-1)*linperfile*128+1,
                       (part*linperfile*128) < progress.totsize ?
                       (part*linperfile*128) : progress.totsize,
                       eolstring);
            }
          else
            {
              if (progress.totsize == -1)
                {
                  fprintf (outfile, "=ybegin line=128 name=%s%s",
                           UUFNameFilter ((outfname)?outfname:infname),
                           eolstring);
                }
              else
                {
                  fprintf (outfile, "=ybegin line=128 size=%ld name=%s%s",
                           progress.totsize,
                           UUFNameFilter ((outfname)?outfname:infname),
                           eolstring);
                }
            }
        }

      if ((res = UUEncodeStream (outfile, theifile,
                                 encoding, linperfile, crcptr, pcrcptr)) != UURET_OK)
        {
          if (res != UURET_CANCEL)
            {
              UUMessage (uuencode_id, __LINE__, UUMSG_ERROR,
                         uustring (S_ERR_ENCODING),
                         UUFNameFilter ((infname)?infname:outfname),
                         (res==UURET_IOERR)?strerror(uu_errno):UUstrerror (res));
            }
          if (infile==NULL) fclose (theifile);
          progress.action = 0;
          fclose (outfile);
          unlink (oname);
          _FP_free (oname);
          return res;
        }

      if (feof (theifile) &&
          (encoding == UU_ENCODED || encoding == XX_ENCODED))
        {
          fprintf (outfile, "%c%s",
                   (encoding==UU_ENCODED) ? UUEncodeTable[0] : XXEncodeTable[0],
                   eolstring);
          fprintf (outfile, "end%s", eolstring);
        }
      else if (encoding == YENC_ENCODED)
        {
          if (numparts != 1)
            {
              fprintf (outfile, "=yend size=%ld part=%d pcrc32=%08lx",
                       (part*linperfile*128) < progress.totsize ?
                       linperfile*128 : (progress.totsize-(part-1)*linperfile*128),
                       part,
                       pcrc);
            }
          else
            {
              fprintf (outfile, "=yend size=%ld",
                       progress.totsize);
            }
          if (feof (theifile))
            fprintf (outfile, " crc32=%08lx", crc);
          fprintf (outfile, "%s", eolstring);
        }

      /*
       * empty line at end does no harm
       */

      fprintf (outfile, "%s", eolstring);
      fclose  (outfile);
    }

  if (infile==NULL) fclose (theifile);
  progress.action = 0;
  _FP_free (oname);
  return UURET_OK;
}

/*
 * Encode a MIME Mail message or Newsgroup posting and send to a
 * stream. Still needs a somewhat smart MDA, since we only gene-
 * rate a minimum set of headers.
 */

int UUEXPORT
UUE_PrepSingle (FILE *outfile, FILE *infile,
                char *infname, int encoding,
                char *outfname, int filemode,
                char *destination, char *from,
                char *subject, int isemail)
{
  return UUE_PrepSingleExt (outfile, infile,
                            infname, encoding,
                            outfname, filemode,
                            destination, from,
                            subject, NULL,
                            isemail);
}

int UUEXPORT
UUE_PrepSingleExt (FILE *outfile, FILE *infile,
                   char *infname, int encoding,
                   char *outfname, int filemode,
                   char *destination, char *from,
                   char *subject, char *replyto,
                   int isemail)
{
  mimemap *miter=mimetable;
  char *subline, *oname;
  char *mimetype, *ptr;
  int res, len;

  if ((outfname==NULL&&infname==NULL) || (infile==NULL&&infname==NULL) ||
      (encoding!=UU_ENCODED&&encoding!=XX_ENCODED&&encoding!=B64ENCODED&&
       encoding!=PT_ENCODED&&encoding!=QP_ENCODED&&encoding!=YENC_ENCODED))
    {
      UUMessage (uuencode_id, __LINE__, UUMSG_ERROR,
                 uustring (S_PARM_CHECK), "UUE_PrepSingle()");
      return UURET_ILLVAL;
    }

  oname = UUFNameFilter ((outfname)?outfname:infname);
  len   = ((subject)?strlen(subject):0) + strlen(oname) + 40;

  if ((ptr = _FP_strrchr (oname, '.')))
    {
      while (miter->extension && _FP_stricmp (ptr+1, miter->extension) != 0)
        miter++;
      mimetype = miter->mimetype;
    }
  else
    mimetype = NULL;

  if (mimetype == NULL && (encoding == PT_ENCODED || encoding == QP_ENCODED))
    {
      mimetype = "text/plain";
    }

  if ((subline = (char *) malloc (len)) == NULL)
    {
      UUMessage (uuencode_id, __LINE__, UUMSG_ERROR,
                 uustring (S_OUT_OF_MEMORY), len);
      return UURET_NOMEM;
    }

  if (encoding == YENC_ENCODED)
    {
      if (subject)
        sprintf (subline, "- %s - %s (001/001)", oname, subject);
      else
        sprintf (subline, "- %s - (001/001)", oname);
    }
  else
    {
      if (subject)
        sprintf (subline, "%s (001/001) - [ %s ]", subject, oname);
      else
        sprintf (subline, "[ %s ] (001/001)", oname);
    }

  if (from)
    {
      fprintf (outfile, "From: %s%s", from, eolstring);
    }
  if (destination)
    {
      fprintf (outfile, "%s: %s%s",
               (isemail)?"To":"Newsgroups",
               destination, eolstring);
    }

  fprintf (outfile, "Subject: %s%s", subline, eolstring);

  if (replyto)
    {
      fprintf (outfile, "Reply-To: %s%s", replyto, eolstring);
    }

  if (encoding != YENC_ENCODED)
    {
      fprintf (outfile, "MIME-Version: 1.0%s", eolstring);
      fprintf (outfile, "Content-Type: %s; name=\"%s\"%s",
               (mimetype)?mimetype:"Application/Octet-Stream",
               UUFNameFilter ((outfname)?outfname:infname),
               eolstring);
      fprintf (outfile, "Content-Transfer-Encoding: %s%s",
               CTE_TYPE(encoding), eolstring);
    }

  fprintf (outfile, "%s", eolstring);

  res = UUEncodeToStream (outfile, infile, infname, encoding,
                          outfname, filemode);

  _FP_free (subline);
  return res;
}

int UUEXPORT
UUE_PrepPartial (FILE *outfile, FILE *infile,
                 char *infname, int encoding,
                 char *outfname, int filemode,
                 int partno, long linperfile, long filesize,
                 char *destination, char *from, char *subject,
                 int isemail)
{
  return UUE_PrepPartialExt (outfile, infile,
                             infname, encoding,
                             outfname, filemode,
                             partno, linperfile, filesize,
                             destination,
                             from, subject, NULL,
                             isemail);
}

int UUEXPORT
UUE_PrepPartialExt (FILE *outfile, FILE *infile,
                    char *infname, int encoding,
                    char *outfname, int filemode,
                    int partno, long linperfile, long filesize,
                    char *destination,
                    char *from, char *subject, char *replyto,
                    int isemail)
{
  static int numparts, themode;
  static char mimeid[64];
  static FILE *theifile;
  struct stat finfo;
  char *subline, *oname;
  long thesize;
  int res, len;
  static crc32_t crc;
  crc32_t *crcptr=NULL;

  if ((outfname==NULL&&infname==NULL) || (infile==NULL&&infname==NULL) ||
      (encoding!=UU_ENCODED&&encoding!=XX_ENCODED&&encoding!=B64ENCODED&&
       encoding!=PT_ENCODED&&encoding!=QP_ENCODED&&encoding!=YENC_ENCODED))
    {
      UUMessage (uuencode_id, __LINE__, UUMSG_ERROR,
                 uustring (S_PARM_CHECK), "UUE_PrepPartial()");
      return UURET_ILLVAL;
    }

  oname = UUFNameFilter ((outfname)?outfname:infname);
  len   = ((subject)?strlen(subject):0) + strlen (oname) + 40;

  /*
   * if first part, get information about the file
   */

  if (partno == 1)
    {
      if (infile==NULL)
        {
          if (stat (infname, &finfo) == -1)
            {
              UUMessage (uuencode_id, __LINE__, UUMSG_ERROR,
                         uustring (S_NOT_STAT_FILE),
                         infname, strerror (uu_errno=errno));
              return UURET_IOERR;
            }
          if ((theifile = fopen (infname, "rb")) == NULL)
            {
              UUMessage (uuencode_id, __LINE__, UUMSG_ERROR,
                         uustring (S_NOT_OPEN_FILE),
                         infname, strerror (uu_errno=errno));
              return UURET_IOERR;
            }
          if (linperfile <= 0)
            numparts = 1;
          else
            numparts = (int) (((long)finfo.st_size+(linperfile*bpl[encoding]-1))/
                              (linperfile*bpl[encoding]));

          themode  = (filemode) ? filemode : ((int) finfo.st_mode & 0777);
          thesize  = (long) finfo.st_size;
        }
      else
        {
          if (fstat (fileno (infile), &finfo) != 0)
            {
              if (filesize <= 0)
                {
                  UUMessage (uuencode_id, __LINE__, UUMSG_WARNING,
                             uustring (S_STAT_ONE_PART));
                  numparts = 1;
                  themode  = (filemode)?filemode:0644;
                  thesize  = -1;
                }
              else
                {
                  if (linperfile <= 0)
                    numparts = 1;
                  else
                    numparts = (int) ((filesize+(linperfile*bpl[encoding]-1))/
                                      (linperfile*bpl[encoding]));

                  themode  = (filemode)?filemode:0644;
                  thesize  = filesize;
                }
            }
          else
            {
              if (linperfile <= 0)
                numparts = 1;
              else
                numparts = (int) (((long)finfo.st_size+(linperfile*bpl[encoding]-1))/
                                  (linperfile*bpl[encoding]));

              filemode = (int) finfo.st_mode & 0777;
              thesize  = (long) finfo.st_size;
            }
          theifile = infile;
        }

      /*
       * if there's one part only, don't use Message/Partial
       */

      if (numparts == 1)
        {
          if (infile==NULL) fclose (theifile);
          return UUE_PrepSingleExt (outfile, infile, infname, encoding,
                                    outfname, filemode, destination,
                                    from, subject, replyto, isemail);
        }

      /*
       * we also need a unique ID
       */

      sprintf (mimeid, "UUDV-%ld.%ld.%s",
               (long) time(NULL), thesize,
               (strlen(oname)>16)?"oops":oname);
    }

  if ((subline = (char *) malloc (len)) == NULL)
    {
      UUMessage (uuencode_id, __LINE__, UUMSG_ERROR,
                 uustring (S_OUT_OF_MEMORY), len);
      if (infile==NULL) fclose (theifile);
      return UURET_NOMEM;
    }


  if (encoding == YENC_ENCODED)
    {
      if (partno == 1)
        crc = crc32(0L, Z_NULL, 0);
      crcptr = &crc;
      if (subject)
        sprintf (subline, "- %s - %s (%03d/%03d)", oname, subject,
                 partno, numparts);
      else
        sprintf (subline, "- %s - (%03d/%03d)", oname,
                 partno, numparts);
    }
  else
    {
      if (subject)
        sprintf (subline, "%s (%03d/%03d) - [ %s ]",
                 subject, partno, numparts, oname);
      else
        sprintf (subline, "[ %s ] (%03d/%03d)",
                 oname, partno, numparts);
    }

  if (from)
    {
      fprintf (outfile, "From: %s%s", from, eolstring);
    }

  if (destination)
    {
      fprintf (outfile, "%s: %s%s",
               (isemail)?"To":"Newsgroups",
               destination, eolstring);
    }

  fprintf (outfile, "Subject: %s%s", subline, eolstring);

  if (replyto)
    {
      fprintf (outfile, "Reply-To: %s%s", replyto, eolstring);
    }

  if (encoding != YENC_ENCODED)
    {
      fprintf (outfile, "MIME-Version: 1.0%s", eolstring);
      fprintf (outfile, "Content-Type: Message/Partial; number=%d; total=%d;%s",
               partno, numparts, eolstring);
      fprintf (outfile, "\tid=\"%s\"%s",
               mimeid, eolstring);
    }

  fprintf (outfile, "%s", eolstring);

  res = UUEncodePartial (outfile, theifile,
                         infname, encoding,
                         (outfname)?outfname:infname, NULL,
                         themode, partno, linperfile, crcptr);

  _FP_free (subline);

  if (infile==NULL)
    {
      if (res != UURET_OK)
        {
          fclose (theifile);
          return res;
        }
      if (feof (theifile))
        {
          fclose (theifile);
          return UURET_OK;
        }
      return UURET_CONT;
    }

  return res;
}
