1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
|
/* -*- Mode: C++ -*-
* Worldvisions Weaver Software:
* Copyright (C) 1997-2002 Net Integration Technologies, Inc.
*
* Enhanced "Log Receiver" classes for WvLog.
*
* WvLogRcv-derived classes support automatic formatting of log lines with
* a prefix, removing control characters, and so on.
*
* WvLogRcv supports partial- and multiple-line log messages. For example,
* log.print("test ");
* log.print("string\nfoo");
* will print:
* appname(lvl): test string
* appname(lvl): foo
*/
#ifndef __WVLOGRCV_H
#define __WVLOGRCV_H
#include "wvlog.h"
#include "wvfdstream.h"
#include "wvscatterhash.h"
/**
* WvLogRcv adds some intelligence to WvLogRcvBase, to keep
* track of line-prefix-printing and other formatting information.
*/
class WvLogRcv : public WvLogRcvBase
{
protected:
const WvLog *last_source;
WvLog::LogLevel max_level, last_level;
bool at_newline;
WvString prefix;
size_t prelen;
class Src_Lvl
{
public:
WvString src;
WvLog::LogLevel lvl;
Src_Lvl(WvString _src, int _lvl) : src(_src),
lvl((WvLog::LogLevel)_lvl) {};
};
DeclareWvScatterDict(Src_Lvl, WvString, src);
Src_LvlDict custom_levels;
virtual void log(const WvLog *source, int loglevel,
const char *_buf, size_t len);
/** Set the Prefix and Prefix Length (size_t prelen) */
virtual void _make_prefix();
/** Start a new log line (print prefix) */
virtual void _begin_line();
/** End this (Guaranteed NonEmpty) log line */
virtual void _end_line();
/**
* add text to the current log line. 'str' may contain only
* one '\n' optional character at str[len-1] (the end); if it does,
* end_line will be called immediately after this function.
*/
virtual void _mid_line(const char *str, size_t len) = 0;
private:
void begin_line()
{ if (!at_newline) return; _begin_line(); at_newline = false; }
void mid_line(const char *str, size_t len)
{ _mid_line(str, len);
if (len>0 && str[len-1] == '\n') at_newline = true; }
public:
static char *loglevels[WvLog::NUM_LOGLEVELS];
WvLogRcv(WvLog::LogLevel _max_level = WvLog::NUM_LOGLEVELS);
virtual ~WvLogRcv();
void end_line()
{ if (at_newline) return;
_mid_line("\n", 1); _end_line(); at_newline = true; };
WvLog::LogLevel level() const
{ return max_level; }
void level(WvLog::LogLevel lvl)
{ max_level = lvl; }
/*
* Allows you to override debug levels for specific sources
* example: mysql=9,Service Manager=9
* will get all the debug output from all the sources that
* contain (case insensitively) "mysql" or "Service Manager"
* in the source name regardless of the current debug level.
*/
bool set_custom_levels(WvString descr);
};
/**
* Captures formatted log messages and outputs them to the
* specified file descriptor.
*/
class WvLogConsole : public WvFDStream, public WvLogRcv
{
public:
WvLogConsole(int _fd,
WvLog::LogLevel _max_level = WvLog::NUM_LOGLEVELS);
virtual ~WvLogConsole();
protected:
virtual void _mid_line(const char *str, size_t len);
};
#endif // __WVLOGRCV_H
|
