char upcase(char letter)
 {
  switch(letter)
   {
   case '�':return '�';  /* ASCII 129 nach 154 */
   case '�':return '�';  /* ASCII 130 nach 144 */
   case '�':return 'A';  /* ASCII 131 nach 65  */
   case '�':return '�';  /* ASCII 132 nach 142 */
   case '�':return 'A';  /* ASCII 133 nach 65  */
   case '�':return '�';  /* ASCII 134 nach 143 */
   case '�':return '�';  /* ASCII 135 nach 128 */
   case '�':return 'E';  /* ASCII 136 nach 69  */
   case '�':return 'E';  /* ASCII 137 nach 69  */
   case '�':return 'E';  /* ASCII 138 nach 69  */
   case '�':return 'I';  /* ASCII 139 nach 73  */
   case '�':return 'I';  /* ASCII 140 nach 73  */
   case '�':return 'I';  /* ASCII 141 nach 73  */
   case '�':return '�';  /* ASCII 145 nach 146 */
   case '�':return 'O';  /* ASCII 147 nach 79  */
   case '�':return '�';  /* ASCII 148 nach 153 */
   case '�':return 'O';  /* ASCII 149 nach 153 */
   case '�':return 'U';  /* ASCII 150 nach 85  */
   case '�':return 'U';  /* ASCII 151 nach 85  */
   case '�':return 'Y';  /* ASCII 152 nach 89  */
   case '�':return 'A';  /* ASCII 160 nach 65  */
   case '�':return 'I';  /* ASCII 161 nach 73  */
   case '�':return 'O';  /* ASCII 162 nach 79  */
   case '�':return 'U';  /* ASCII 163 nach 85  */
   case '�':return '�';  /* ASCII 164 nach 165 */
   default:
    if(letter>='a' && letter<='z') return letter-('a'-'A');
    return letter;
   }
 }

char dncase(char letter)
 {
  switch(letter)
   {
   case '�':return '�';
   case '�':return '�';
   case '�':return '�';
   default:
    if(letter>='A' && letter<='Z') return letter+('a'-'A');
    return letter;
   }
 }

void upstring(char *s)
 {
  for(;*s!=0; s++) *s=upcase(*s);
 }

void dnstring(char *s)
 {
  for(;*s!=0; s++) *s=dncase(*s);
 }

void num2str(dword num, char *str, byte letters)
 {
  byte i;
  char ch;

  str[letters]=0;
  for(i=0; i<letters; i++)
   {
    ch=num%36;
    if(ch<10) ch+='0'; else ch+='A'-10;
    str[letters-i-1]=ch;
    num/=36;
   }
 }

dword crc_32_tab[]= /* CRC polynomial 0xedb88320 */
 {
  0x00000000L, 0x77073096L, 0xee0e612cL, 0x990951baL,
  0x076dc419L, 0x706af48fL, 0xe963a535L, 0x9e6495a3L,
  0x0edb8832L, 0x79dcb8a4L, 0xe0d5e91eL, 0x97d2d988L,
  0x09b64c2bL, 0x7eb17cbdL, 0xe7b82d07L, 0x90bf1d91L,
  0x1db71064L, 0x6ab020f2L, 0xf3b97148L, 0x84be41deL,
  0x1adad47dL, 0x6ddde4ebL, 0xf4d4b551L, 0x83d385c7L,
  0x136c9856L, 0x646ba8c0L, 0xfd62f97aL, 0x8a65c9ecL,
  0x14015c4fL, 0x63066cd9L, 0xfa0f3d63L, 0x8d080df5L,
  0x3b6e20c8L, 0x4c69105eL, 0xd56041e4L, 0xa2677172L,
  0x3c03e4d1L, 0x4b04d447L, 0xd20d85fdL, 0xa50ab56bL,
  0x35b5a8faL, 0x42b2986cL, 0xdbbbc9d6L, 0xacbcf940L,
  0x32d86ce3L, 0x45df5c75L, 0xdcd60dcfL, 0xabd13d59L,
  0x26d930acL, 0x51de003aL, 0xc8d75180L, 0xbfd06116L,
  0x21b4f4b5L, 0x56b3c423L, 0xcfba9599L, 0xb8bda50fL,
  0x2802b89eL, 0x5f058808L, 0xc60cd9b2L, 0xb10be924L,
  0x2f6f7c87L, 0x58684c11L, 0xc1611dabL, 0xb6662d3dL,
  0x76dc4190L, 0x01db7106L, 0x98d220bcL, 0xefd5102aL,
  0x71b18589L, 0x06b6b51fL, 0x9fbfe4a5L, 0xe8b8d433L,
  0x7807c9a2L, 0x0f00f934L, 0x9609a88eL, 0xe10e9818L,
  0x7f6a0dbbL, 0x086d3d2dL, 0x91646c97L, 0xe6635c01L,
  0x6b6b51f4L, 0x1c6c6162L, 0x856530d8L, 0xf262004eL,
  0x6c0695edL, 0x1b01a57bL, 0x8208f4c1L, 0xf50fc457L,
  0x65b0d9c6L, 0x12b7e950L, 0x8bbeb8eaL, 0xfcb9887cL,
  0x62dd1ddfL, 0x15da2d49L, 0x8cd37cf3L, 0xfbd44c65L,
  0x4db26158L, 0x3ab551ceL, 0xa3bc0074L, 0xd4bb30e2L,
  0x4adfa541L, 0x3dd895d7L, 0xa4d1c46dL, 0xd3d6f4fbL,
  0x4369e96aL, 0x346ed9fcL, 0xad678846L, 0xda60b8d0L,
  0x44042d73L, 0x33031de5L, 0xaa0a4c5fL, 0xdd0d7cc9L,
  0x5005713cL, 0x270241aaL, 0xbe0b1010L, 0xc90c2086L,
  0x5768b525L, 0x206f85b3L, 0xb966d409L, 0xce61e49fL,
  0x5edef90eL, 0x29d9c998L, 0xb0d09822L, 0xc7d7a8b4L,
  0x59b33d17L, 0x2eb40d81L, 0xb7bd5c3bL, 0xc0ba6cadL,
  0xedb88320L, 0x9abfb3b6L, 0x03b6e20cL, 0x74b1d29aL,
  0xead54739L, 0x9dd277afL, 0x04db2615L, 0x73dc1683L,
  0xe3630b12L, 0x94643b84L, 0x0d6d6a3eL, 0x7a6a5aa8L,
  0xe40ecf0bL, 0x9309ff9dL, 0x0a00ae27L, 0x7d079eb1L,
  0xf00f9344L, 0x8708a3d2L, 0x1e01f268L, 0x6906c2feL,
  0xf762575dL, 0x806567cbL, 0x196c3671L, 0x6e6b06e7L,
  0xfed41b76L, 0x89d32be0L, 0x10da7a5aL, 0x67dd4accL,
  0xf9b9df6fL, 0x8ebeeff9L, 0x17b7be43L, 0x60b08ed5L,
  0xd6d6a3e8L, 0xa1d1937eL, 0x38d8c2c4L, 0x4fdff252L,
  0xd1bb67f1L, 0xa6bc5767L, 0x3fb506ddL, 0x48b2364bL,
  0xd80d2bdaL, 0xaf0a1b4cL, 0x36034af6L, 0x41047a60L,
  0xdf60efc3L, 0xa867df55L, 0x316e8eefL, 0x4669be79L,
  0xcb61b38cL, 0xbc66831aL, 0x256fd2a0L, 0x5268e236L,
  0xcc0c7795L, 0xbb0b4703L, 0x220216b9L, 0x5505262fL,
  0xc5ba3bbeL, 0xb2bd0b28L, 0x2bb45a92L, 0x5cb36a04L,
  0xc2d7ffa7L, 0xb5d0cf31L, 0x2cd99e8bL, 0x5bdeae1dL,
  0x9b64c2b0L, 0xec63f226L, 0x756aa39cL, 0x026d930aL,
  0x9c0906a9L, 0xeb0e363fL, 0x72076785L, 0x05005713L,
  0x95bf4a82L, 0xe2b87a14L, 0x7bb12baeL, 0x0cb61b38L,
  0x92d28e9bL, 0xe5d5be0dL, 0x7cdcefb7L, 0x0bdbdf21L,
  0x86d3d2d4L, 0xf1d4e242L, 0x68ddb3f8L, 0x1fda836eL,
  0x81be16cdL, 0xf6b9265bL, 0x6fb077e1L, 0x18b74777L,
  0x88085ae6L, 0xff0f6a70L, 0x66063bcaL, 0x11010b5cL,
  0x8f659effL, 0xf862ae69L, 0x616bffd3L, 0x166ccf45L,
  0xa00ae278L, 0xd70dd2eeL, 0x4e048354L, 0x3903b3c2L,
  0xa7672661L, 0xd06016f7L, 0x4969474dL, 0x3e6e77dbL,
  0xaed16a4aL, 0xd9d65adcL, 0x40df0b66L, 0x37d83bf0L,
  0xa9bcae53L, 0xdebb9ec5L, 0x47b2cf7fL, 0x30b5ffe9L,
  0xbdbdf21cL, 0xcabac28aL, 0x53b39330L, 0x24b4a3a6L,
  0xbad03605L, 0xcdd70693L, 0x54de5729L, 0x23d967bfL,
  0xb3667a2eL, 0xc4614ab8L, 0x5d681b02L, 0x2a6f2b94L,
  0xb40bbe37L, 0xc30c8ea1L, 0x5a05df1bL, 0x2d02ef8dL
 };

#define UPDC32(octet, crc) (crc_32_tab[(unsigned)((((dword)crc)^((dword)octet))&0xff)]^(((dword)crc)>>8))

dword str2crc(const char *s)
 {
  dword crc=0xffffffff;
  while(*s!=0) crc=UPDC32(*(s++), crc);
  return crc^0xffffffff;
 }

dword str2icrc(const char *s)
 {
  dword crc=0xffffffff;
  while(*s!=0) crc=UPDC32(dncase(*(s++)), crc);
  return crc^0xffffffff;
 }

byte checkjoker(const char *mask, const char *filename, bool casei)
 {
  while(TRUE)
   {
    switch(*mask)
     {
      case '?':
        if(*filename==0)
          return FALSE;
        mask++;
        filename++;
        break;

      case '*':
        mask++;
        if(*mask==0) return TRUE;
        while(*filename!=0)
         {
          if(checkjoker(mask, filename, casei))
            return TRUE;
          filename++;
         }
        return FALSE;

      default:
        if(casei)
         {
          if(upcase(*mask)!=upcase(*filename))
            return FALSE;
         }
        else
         {
          if(*mask!=*filename)
            return FALSE;
         }

        if(*mask==0)
          return TRUE;
        mask++;
        filename++;
        break;
     }
   }
 }

void stripendingblanks(char *s)
 {
  char *tptr;

  if(s[0]==0) return;

  tptr=s+strlen(s)-1;
  while((*tptr==' ' || *tptr=='\t') && tptr>=s)
   {
    *tptr=0;
    tptr--;
   }
 }

void memsetw(void *s, word c, size_t n)
 {
  #ifdef __TURBOC__
  asm mov bx, di
  asm les di, s
  asm mov ax, c
  asm mov cx, n
  asm cld
  asm rep stosw
  asm mov di, bx
  #else
  word *p;

  p=(word *)s;
  while((n--)!=0) *(p++)=c;

  #endif
 }

void memcpyw(void *dest, const void *src, size_t n)
 {
  #ifdef __TURBOC__
  asm push ds
  asm push si
  asm push di

  asm lds si, src
  asm les di, dest
  asm mov cx, n
  asm cld
  asm rep movsw

  asm pop di
  asm pop si
  asm pop ds
  #else
  memcpy(dest, src, n*2);
  #endif
 }

int readconfigline(FILE *infile, char *line1, char *line2, word maxlen)
 {
  char tempstr[1000], *tptr, *tptr2;

  line1[0]=line2[0]=0;

 schleife:
  if(fgets(tempstr, 900, infile)==NULL)
    return 1;

  tptr=strchr(tempstr, '\n'); if(tptr!=NULL) *tptr=0;
  tptr=strchr(tempstr, '\r'); if(tptr!=NULL) *tptr=0;

  tptr=tempstr;
  while(*tptr==' ' || *tptr=='\t') tptr++;

  if(*tptr==0 || *tptr==';' || *tptr=='#') goto schleife;

  tptr2=tptr;
  while(*tptr2!=0 && *tptr2!='=' && *tptr2!=':')
    tptr2++;

  if(*tptr2==0) return 2;

  *(tptr2++)=0;
  while(*tptr2==' ' || *tptr2=='\t') tptr2++;

  strmaxcpy(line1, tptr, maxlen);
  strmaxcpy(line2, tptr2, maxlen);

  tptr=line1+strlen(line1);
  while(tptr>line1 && (*(tptr-1)==' ' || *(tptr-1)=='\t')) tptr--;
  *tptr=0;

  tptr=line2+strlen(line2);
  while(tptr>line2 && (*(tptr-1)==' ' || *(tptr-1)=='\t')) tptr--;
  *tptr=0;

  return 0;
 }

bool filecopy(FILE *file, FILE *target, dword size)
 {
  dword buffersize, bytestocopy, bytestocopy2;
  long int bytesread;
  void *buffer;

  buffersize=64000l;
  if((buffer=malloc(buffersize))==NULL) return TRUE;
  bytestocopy=size;

  while(bytestocopy!=0)
   {
    bytestocopy2=bytestocopy>buffersize?buffersize:bytestocopy;

    bytesread=fread(buffer, 1, bytestocopy2, file);
    fwrite(buffer, 1, bytesread, target);

    bytestocopy-=bytesread;
   }
  free(buffer);
  return FALSE;
 }

bool filecopy(int file, int target, dword size)
 {
  dword buffersize, bytestocopy, bytestocopy2;
  long int bytesread;
  void *buffer;

  buffersize=64000l;
  if((buffer=malloc(buffersize))==NULL) return TRUE;
  bytestocopy=size;

  while(bytestocopy!=0)
   {
    bytestocopy2=bytestocopy>buffersize?buffersize:bytestocopy;

    bytesread=read(file, buffer, bytestocopy2);
    if(bytesread<0)
     {
      free(buffer);
      return TRUE;
     }

    if(write(target, buffer, bytesread)!=bytesread)
     {
      free(buffer);
      return TRUE;
     }

    bytestocopy-=bytesread;
   }
  free(buffer);
  return FALSE;
 }

byte decodehex(char hex)
 {
  if(isdigit(hex)) return hex-'0';
  return tolower(hex)-'a'+10;
 }

byte decodehex(char hex1, char hex2)
 {
  return (decodehex(hex1)<<4)|decodehex(hex2);
 }