stream.h
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/*
GNU Mailutils -- a suite of utilities for electronic mail
Copyright (C) 2004 Free Software Foundation, Inc.
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 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
*/
#ifndef _STREAM_H
#define _STREAM_H
#include <iostream>
#include <string>
#include <cstdio>
#include <mailutils/stream.h>
#include <mailutils/cpp/error.h>
namespace mailutils
{
class Stream
{
protected:
stream_t stm;
size_t readn;
size_t writen;
int wflags;
bool opened;
size_t reference_count;
// Inlines
void reference () {
reference_count++;
}
bool dereference () {
return --reference_count == 0;
}
// Friends
friend class FilterStream;
friend class FilterProgStream;
friend class Mailcap;
friend class Pop3;
public:
Stream ();
Stream (Stream& s);
Stream (const stream_t);
~Stream ();
void Open ();
void Close ();
void SetWaitFlags (int);
void Wait (); // timeval is missing
void Wait (int); // timeval is missing
void Read (char*, size_t, off_t);
void Write (const std::string&, size_t, off_t);
void ReadLine (char*, size_t, off_t);
void SequentialReadLine (char*, size_t);
void SequentialWrite (const std::string&, size_t);
void Flush ();
// Inlines
size_t GetReadn () const {
return readn;
};
size_t GetWriten () const {
return writen;
};
friend Stream& operator << (Stream&, const std::string&);
friend Stream& operator >> (Stream&, std::string&);
// Stream Exceptions
class EAgain : public Exception {
public:
EAgain (const std::string& m, int s) : Exception (m, s) {}
};
};
class TcpStream : public Stream
{
public:
TcpStream (const std::string&, int, int);
};
class FileStream : public Stream
{
public:
FileStream (const std::string&, int);
};
class StdioStream : public Stream
{
public:
StdioStream (FILE*, int);
};
class ProgStream : public Stream
{
public:
ProgStream (const std::string&, int);
};
class FilterProgStream : public Stream
{
private:
Stream *input;
public:
FilterProgStream (const std::string&, Stream&);
FilterProgStream (const std::string&, Stream*);
};
}
#endif // not _STREAM_H