system_specific_win32.c

/*************************************************************************/
/*                                                                       */
/*                Centre for Speech Technology Research                  */
/*                     University of Edinburgh, UK                       */
/*                    Copyright (c) 1994,1995,1996                       */
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/*                                                                       */
/*************************************************************************/
/* functions which mimic unix system calls                               */

#include <stdlib.h>
#include <stdio.h>
#include "EST_unix.h"
#include "EST_socket.h"

int unix_access(const char *file, int mode)
{
  DWORD flags = GetFileAttributes(file);

  if (flags == 0xffffffff)
  {
      if (ERROR_FILE_NOT_FOUND == GetLastError())
      return -1;
      else return 1;
  }

  if (mode==F_OK)
    return 0;

  if (mode==R_OK)
    return 0;

  if (mode==W_OK)
  {
   /* When referring to a directory, FILE_ATTRIBUTE_READONLY means the directory can't be
      deleted.  It does not mean a file can't be written to the directory.
   */
    if (flags|FILE_ATTRIBUTE_DIRECTORY)
      return 0;
    else 
      return (flags|FILE_ATTRIBUTE_READONLY) != 0;
  }

  return 1;
}


int unix_read(HANDLE fd, char *buffer, int n)
{
  int howmany;

  if (ReadFile(fd, buffer, n, &howmany, NULL))
    return howmany;

  return -1;
}

char *unix_getcwd(char *buffer, int maxlength)
{
  static char lbuffer[1024];

  if (buffer==NULL)
    {
    buffer = lbuffer;
    maxlength=1023;
    }

  if (GetCurrentDirectory(maxlength, buffer) >=0)
    return buffer;
  return NULL;
}

int unix_waitpid(int pid, int *statusp, int flags)
{
  fprintf(stderr, "waitpid not yet implemented\n");
  return 0;
}

int unix_fork(void)
{
  fprintf(stderr," FORK NOT YET IMPLEMENTED\n");
  return -1;
}

static int sockets_initialised =0;

int socket_initialise(void)
{
  WORD wVersionRequested;
  WSADATA wsaData;
  int err;

  if (sockets_initialised)
    return 1;
  
  wVersionRequested = MAKEWORD( 2, 0 );
 
  err = WSAStartup( wVersionRequested, &wsaData );
  if ( err != 0 ) 
    {
      printf("Socket Initialisation failed\n");
      return 0;
    }

  sockets_initialised=1;
  return 1;
}