138 lines
4.8 KiB
C++
138 lines
4.8 KiB
C++
/*
|
|
* CDE - Common Desktop Environment
|
|
*
|
|
* Copyright (c) 1993-2012, The Open Group. All rights reserved.
|
|
*
|
|
* These libraries and programs are free software; you can
|
|
* redistribute them and/or modify them under the terms of the GNU
|
|
* Lesser General Public License as published by the Free Software
|
|
* Foundation; either version 2 of the License, or (at your option)
|
|
* any later version.
|
|
*
|
|
* These libraries and programs are distributed in the hope that
|
|
* they 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 these libraries and programs; if not, write
|
|
* to the Free Software Foundation, Inc., 51 Franklin Street, Fifth
|
|
* Floor, Boston, MA 02110-1301 USA
|
|
*/
|
|
/*
|
|
* $XConsortium: buffer.h /main/6 1996/08/15 14:21:05 cde-hal $
|
|
*
|
|
* Copyright (c) 1993 HAL Computer Systems International, Ltd.
|
|
* All rights reserved. Unpublished -- rights reserved under
|
|
* the Copyright Laws of the United States. USE OF A COPYRIGHT
|
|
* NOTICE IS PRECAUTIONARY ONLY AND DOES NOT IMPLY PUBLICATION
|
|
* OR DISCLOSURE.
|
|
*
|
|
* THIS SOFTWARE CONTAINS CONFIDENTIAL INFORMATION AND TRADE
|
|
* SECRETS OF HAL COMPUTER SYSTEMS INTERNATIONAL, LTD. USE,
|
|
* DISCLOSURE, OR REPRODUCTION IS PROHIBITED WITHOUT THE
|
|
* PRIOR EXPRESS WRITTEN PERMISSION OF HAL COMPUTER SYSTEMS
|
|
* INTERNATIONAL, LTD.
|
|
*
|
|
* RESTRICTED RIGHTS LEGEND
|
|
* Use, duplication, or disclosure by the Government is subject
|
|
* to the restrictions as set forth in subparagraph (c)(l)(ii)
|
|
* of the Rights in Technical Data and Computer Software clause
|
|
* at DFARS 252.227-7013.
|
|
*
|
|
* HAL COMPUTER SYSTEMS INTERNATIONAL, LTD.
|
|
* 1315 Dell Avenue
|
|
* Campbell, CA 95008
|
|
*
|
|
*/
|
|
|
|
|
|
#ifndef _buffer_h
|
|
#define _buffer_h 1
|
|
|
|
#include <ctype.h>
|
|
#include <iomanip>
|
|
#include "utility/funcs.h"
|
|
|
|
class buffer
|
|
{
|
|
|
|
public:
|
|
buffer(const int sz = 1024) : v_swap_order(false) { _alloc(sz); };
|
|
buffer(buffer&);
|
|
virtual ~buffer();
|
|
|
|
// buffer management functions
|
|
virtual void reset(); // clean the buffer
|
|
int expand_chunk(const int); // expand buffer chunk
|
|
void set_chunk(char* ptr, const int sz) {
|
|
v_bufsz = sz;
|
|
v_eptr = v_aptr = v_base = ptr;
|
|
v_allocated = 0;
|
|
}; // set buffer chunk
|
|
void set_content_sz(const int sz) {v_eptr = v_base + sz;} ;
|
|
|
|
// buffer status functions
|
|
int buf_sz() const { return v_bufsz; }; // chunk length
|
|
int content_sz() const { return v_eptr - v_aptr; }; // content length
|
|
int remaining_sz() const { return v_bufsz - int(v_eptr - v_aptr); }; // remaining space
|
|
char* get_base() const { return v_base; }; // get 'base'
|
|
|
|
// get items
|
|
buffer& get(char& y); // get current char
|
|
buffer& get(unsigned short& y); // get a short
|
|
buffer& get(unsigned int& y); // get a unsigned int
|
|
buffer& get(int& y); // get an int
|
|
buffer& get(long& y); // get a long
|
|
buffer& get(float & y); // get a float
|
|
buffer& get(char*, int) ; // get a string
|
|
|
|
buffer& getusc(int& y); // get unsigned char to intr.
|
|
// no boundary checking
|
|
|
|
// put items
|
|
buffer& put(const char content, Boolean exp_buf = false) ; // append char
|
|
buffer& put(const unsigned char, Boolean exp_buf = false) ; //append unsigned char
|
|
buffer& put(const int, Boolean exp_buf = false) ; // append an int
|
|
buffer& put(const unsigned int, Boolean exp_buf = false) ; // append a unsigned int
|
|
buffer& put(const long, Boolean exp_buf = false) ; // append a long
|
|
buffer& put(const unsigned short, Boolean exp_buf = false) ; //append a short
|
|
buffer& put(const float y, Boolean exp_buf = false); // put a float
|
|
buffer& put(const char*, int, Boolean exp_buf = false) ; // append a string
|
|
|
|
buffer& skip(int i) ; // skip i chars
|
|
|
|
// set and get byte order
|
|
void set_swap_order(Boolean x) { v_swap_order = x; };
|
|
Boolean get_swap_order() { return v_swap_order; };
|
|
|
|
friend Boolean operator ==(buffer&, buffer&);
|
|
|
|
// show the buffer
|
|
friend ostream& operator <<(ostream&, buffer&);
|
|
|
|
friend class abs_storage;
|
|
friend class unixf_storage;
|
|
friend class page_storage;
|
|
friend class mem_storage;
|
|
friend class page_cache_global_part;
|
|
|
|
protected:
|
|
char v_allocated;
|
|
unsigned int v_bufsz ; // allocated chunk size
|
|
char *v_base ; // base address of the chunk
|
|
char *v_eptr ; // end address of the buf content
|
|
char *v_aptr ; // beginning address of the buf content
|
|
int v_align_offset; // memory align offset
|
|
|
|
Boolean v_swap_order;
|
|
|
|
protected:
|
|
void _alloc(const int sz);
|
|
};
|
|
|
|
typedef buffer* bufferPtr;
|
|
|
|
#endif
|