// -*- c++ -*-

/*
 * Jakelib2 - General purpose C++ library
 * Copyright (C) 2001 Florian Wolff  (florian@donuz.de)
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 * $Id: FileOutputStream.jlc,v 1.9 2006-01-12 21:13:07 florian Exp $
 */


#include "jakelib2.h"
#include "jakelib2/io/FileOutputStream.h"
#include "jakelib2/io/File.h"
#include "jakelib2/lang/System.h"

#ifdef HAVE_ERRNO_H
# include <errno.h>
#endif
#ifdef HAVE_FCNTL_H
# include <fcntl.h>
#endif
#ifdef HAVE_UNISTD_H
# include <unistd.h>
#endif
#ifdef HAVE_SYS_STAT_H
# include <sys/stat.h>
#endif

using namespace jakelib::lang;
using namespace jakelib::io;

JAKELIB_IMPLEMENT_CLASS("jakelib.io.FileOutputStream", FileOutputStream, OutputStream)


/*****************************************************************************\
 * FileOutputStream                                                           |
 *****************************************************************************/
FileOutputStream::FileOutputStream(File* file, jboolean append)
{
  this->append = append;
  init(file->getPath());
}

FileOutputStream::FileOutputStream(char *filename, jboolean append)
{
  this->append = append;
  String _filename(filename);
  init(&_filename);
}

FileOutputStream::FileOutputStream(String* filename, jboolean append)
{
  this->append = append;
  init(filename);
}

FileOutputStream::~FileOutputStream()
{
  close();
}


/*****************************************************************************\
 * init                                                                       |
 *****************************************************************************/
void FileOutputStream::init(String* filename)
{
#if defined(JAKELIB_WIN32API)

  // FIXME: append
  handle = CreateFile(JAKELIB_LATIN1(filename), GENERIC_WRITE,
                      0, NULL, CREATE_ALWAYS,
                      FILE_ATTRIBUTE_NORMAL, NULL);
  
  if (handle == INVALID_HANDLE_VALUE) {
    throw new IOException(System::explainErrorCode(GetLastError())
                      .. JAKELIB_AT2("jakelib.io.FileOutputStream.init"));
  }
  
#else

  handle = open(JAKELIB_LATIN1(filename), 
                O_WRONLY | O_CREAT | (append ? O_APPEND : O_TRUNC),
		S_IRUSR | S_IWUSR | S_IRGRP);
  
  if (handle == -1) {
    throw new IOException(System::explainErrorCode(errno)
                      .. JAKELIB_AT2("jakelib.io.FileOutputStream.init"));
  }

#endif
}


/*****************************************************************************\
 * write                                                                      |
 *****************************************************************************/
void FileOutputStream::write(int b)
{
  jbyte c = (jbyte) b;
  write(&c, 0, 1);
}


/*****************************************************************************\
 * write                                                                      |
 *****************************************************************************/
void FileOutputStream::write(jbyte* b, int offset, int len)
{
  if (b == null)
    throw new NullPointerException();
  else if (len < 0)
    throw new IndexOutOfBoundsException();
  else if (len == 0)
    return;
  
#if defined(JAKELIB_WIN32API)

  DWORD written;

  if (!WriteFile(handle, &b[offset], len, &written, NULL)) {
    throw new IOException(System::explainErrorCode(GetLastError())
                      .. JAKELIB_AT2("jakelib.io.FileOutputStream.write"));
  }

#else

  if (::write(handle, &b[offset], len) == -1) {
    throw new IOException(System::explainErrorCode(errno)
                      .. JAKELIB_AT2("jakelib::io::PipeOutputStream.write"));
  }

#endif
}


/*****************************************************************************\
 * close                                                                      |
 *****************************************************************************/
void FileOutputStream::close()
{
#if defined(JAKELIB_WIN32API)

  if (handle != INVALID_HANDLE_VALUE) {
    CloseHandle(handle);
    handle = INVALID_HANDLE_VALUE;
  }

#else

  if (handle != -1) {
    ::close(handle);
    handle = -1;
  }

#endif
}