** characters are converted to '/'.  No conversions are needed on
** unix.
**
** Store the value of the CWD in zBuf which is nBuf bytes in size.
** or if zBuf==0, allocate space to hold the result using fossil_malloc().
*/
char *file_getcwd(char *zBuf, int nBuf){
  char zTemp[2000];
  if( zBuf==0 ){
    zBuf = zTemp;
    nBuf = sizeof(zTemp);
    char zTemp[2000];
    return fossil_strdup(file_getcwd(zTemp, sizeof(zTemp)));
  }
#ifdef _WIN32
  win32_getcwd(zBuf, nBuf);
#else
  if( getcwd(zBuf, nBuf-1)==0 ){
    if( errno==ERANGE ){
      fossil_fatal("pwd too big: max %d", nBuf-1);
    }else{
      fossil_fatal("cannot find current working directory; %s",
                   strerror(errno));
    }
  }
#endif
  return zBuf==zTemp ? fossil_strdup(zBuf) : zBuf;
  return zBuf;
}

/*
** Return true if zPath is an absolute pathname.  Return false
** if it is relative.
*/
int file_is_absolute_path(const char *zPath){