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/* -*- Mode: C++ -*-
* Worldvisions Weaver Software:
* Copyright (C) 1997-2002 Net Integration Technologies, Inc.
*
*/
#ifndef __WVLOGBUFFER_H
#define __WVLOGBUFFER_H
#include "wvlogrcv.h"
#include "wvhashtable.h"
/**
* WvLogBuffer is a descendant of WvLogRcv that buffers log messages for
* later use. It only keeps up to max_lines log entries for every
* source/debug level, s.t. debug level <= max_level
*/
class WvLogBuffer : public WvLogRcv
{
public:
// An actual message
class Msg
{
public:
time_t timestamp;
WvLog::LogLevel level;
WvString source, message;
Msg(WvLog::LogLevel _level, WvStringParm _source, WvString _message);
};
DeclareWvList(Msg);
/*
* Maps a string describing msg type of the form "source:level"
* to a list of pointers to all messages of this type
*/
class MsgCounter
{
public:
MsgCounter(WvString _src_lvl) : src_lvl(_src_lvl) {};
Msg* add(Msg* msg, int max);
WvString src_lvl;
private:
MsgList list;
};
DeclareWvDict(MsgCounter, WvString, src_lvl);
protected:
/*
* "Owns" all the msges
*/
MsgList msgs;
/*
* Used for keeping track of how many messages from a given source/level
* there are. Just stores the pointers.
*/
MsgCounterDict counters;
WvDynBuf current;
int max_lines;
void handle_msg(Msg *lastmsg);
virtual void _begin_line() {};
virtual void _mid_line(const char *str, size_t len);
virtual void _end_line();
public:
WvLogBuffer(int _max_lines,
WvLog::LogLevel _max_level = WvLog::NUM_LOGLEVELS);
virtual ~WvLogBuffer();
MsgList &messages()
{ end_line(); return msgs; }
void dump(WvStream &s);
};
#endif // __WVLOGBUFFER_H
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