D-Modem/pjproject-2.11.1/pjlib/include/pj++/file.hpp

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/* $Id$ */
/*
* Copyright (C) 2008-2009 Teluu Inc. (http://www.teluu.com)
* Copyright (C) 2003-2008 Benny Prijono <benny@prijono.org>
*
* 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.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#ifndef __PJPP_FILE_HPP__
#define __PJPP_FILE_HPP__
#include <pj/file_io.h>
#include <pj/file_access.h>
#include <pj++/types.hpp>
#include <pj++/pool.hpp>
//
// File API.
//
class Pj_File_API
{
public:
//
// Check file existance.
//
static bool file_exists(const char *filename)
{
return pj_file_exists(filename) != 0;
}
//
// Get file size.
//
static pj_off_t file_size(const char *filename)
{
return pj_file_size(filename);
}
//
// Delete file.
//
static pj_status_t file_delete(const char *filename)
{
return pj_file_delete(filename);
}
//
// Move/rename file.
//
static pj_status_t file_move(const char *oldname, const char *newname)
{
return pj_file_move(oldname, newname);
}
//
// Get stat.
//
static pj_status_t file_stat(const char *filename, pj_file_stat *buf)
{
return pj_file_getstat(filename, buf);
}
};
//
// File.
//
class Pj_File : public Pj_Object
{
public:
//
// Offset type to be used in setpos.
//
enum Offset_Type
{
PJ_SEEK_SET = PJ_SEEK_SET,
PJ_SEEK_CUR = PJ_SEEK_CUR,
PJ_SEEK_END = PJ_SEEK_END,
};
//
// Default constructor.
//
Pj_File()
: hnd_(0)
{
}
//
// Construct and open a file.
//
Pj_File(Pj_Pool *pool, const char *filename,
unsigned access = PJ_O_RDONLY)
: hnd_(NULL)
{
open(pool, filename, access);
}
//
// Destructor closes the file.
//
~Pj_File()
{
close();
}
//
// Open a file.
//
pj_status_t open(Pj_Pool *pool, const char *filename,
unsigned access = PJ_O_RDONLY )
{
close();
return pj_file_open(pool->pool_(), filename, access, &hnd_);
}
//
// Close a file.
//
void close()
{
if (hnd_ != 0) {
pj_file_close(hnd_);
hnd_ = 0;
}
}
//
// Write data.
//
pj_ssize_t write(const void *buff, pj_size_t size)
{
pj_ssize_t bytes = size;
if (pj_file_write(hnd_, buff, &bytes) != PJ_SUCCESS)
return -1;
return bytes;
}
//
// Read data.
//
pj_ssize_t read(void *buf, pj_size_t size)
{
pj_ssize_t bytes = size;
if (pj_file_read(hnd_, buf, &bytes) != PJ_SUCCESS)
return -1;
return bytes;
}
//
// Set file position.
//
pj_status_t setpos(pj_off_t offset, Offset_Type whence)
{
return pj_file_setpos(hnd_, offset,
(enum pj_file_seek_type)whence);
}
//
// Get file position.
//
pj_off_t getpos()
{
pj_off_t pos;
if (pj_file_getpos(hnd_, &pos) != PJ_SUCCESS)
return -1;
return pos;
}
private:
pj_oshandle_t hnd_;
};
#endif /* __PJPP_FILE_HPP__ */