Design Pattern Examples
Overview of object-oriented design patterns
Bridge_ILogger.c
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1
5
6#include <stdlib.h>
7
8#include "Bridge_FileLogger.h"
9#include "Bridge_ConsoleLogger.h"
10#include "Bridge_NullLogger.h"
11
12#include "Bridge_ILogger.h"
13
14
15
17// CreateLogger()
19ILogger* CreateLogger(LoggerTypes loggerType, const char* filename)
20{
21 ILogger* logger = NULL;
22
23 switch (loggerType)
24 {
25 case LoggerType_ToConsole:
26 logger = CreateConsoleLogger();
27 break;
28
29 case LoggerType_ToNull:
30 logger = CreateNullLogger();
31 break;
32
33 case LoggerType_ToFile:
34 logger = CreateFileLogger(filename);
35 break;
36
37 default:
38 break;
39 }
40
41 if (logger != NULL)
42 {
43 logger->loggerType = loggerType;
44 }
45
46 return logger;
47}
48
50// DestroyLogger()
52void DestroyLogger(ILogger* logger)
53{
54 if (logger != NULL)
55 {
56 switch (logger->loggerType)
57 {
58 case LoggerType_ToConsole:
59 DestroyConsoleLogger(logger);
60 break;
61
62 case LoggerType_ToNull:
63 DestroyNullLogger(logger);
64 break;
65
66 case LoggerType_ToFile:
67 DestroyFileLogger(logger);
68 break;
69
70 default:
71 break;
72 }
73 }
74}
DestroyConsoleLogger
void DestroyConsoleLogger(ILogger *logger)
Destroy the given instance of an ILogger for outputting to a console.
Definition: Bridge_ConsoleLogger.c:96
CreateConsoleLogger
ILogger * CreateConsoleLogger(void)
Create an instance of an ILogger that outputs to a console.
Definition: Bridge_ConsoleLogger.c:79
CreateFileLogger
ILogger * CreateFileLogger(const char *filename)
Create an instance of an ILogger that outputs to a file.
Definition: Bridge_FileLogger.c:96
DestroyFileLogger
void DestroyFileLogger(ILogger *logger)
Destroy the given instance of an ILogger for outputting to a file.
Definition: Bridge_FileLogger.c:127
CreateLogger
ILogger * CreateLogger(LoggerTypes loggerType, const char *filename)
Return an interface for the specified logger.
Definition: Bridge_ILogger.c:19
DestroyLogger
void DestroyLogger(ILogger *logger)
Release any resources associated with the given logger. The given ILogger instance is no longer valid...
Definition: Bridge_ILogger.c:52
Bridge_ILogger.h
Declaration of the ILogger interface, along with the CreateLogger() and DestroyLogger() functions use...
LoggerTypes
LoggerTypes
A value passed to CreateLogger() to specify the type of logger to create.
Definition: Bridge_ILogger.h:15
LoggerType_ToFile
@ LoggerType_ToFile
Log to a file. One additional parameter: the name of the file to log to.
Definition: Bridge_ILogger.h:24
LoggerType_ToNull
@ LoggerType_ToNull
Log to nowhere, that is, throw out all logging. No additional parameters.
Definition: Bridge_ILogger.h:19
LoggerType_ToConsole
@ LoggerType_ToConsole
Log to the console. No additional parameters.
Definition: Bridge_ILogger.h:29
DestroyNullLogger
void DestroyNullLogger(ILogger *logger)
Destroy the given instance of an ILogger for outputting to a console.
Definition: Bridge_NullLogger.c:77
CreateNullLogger
ILogger * CreateNullLogger(void)
Create an instance of an ILogger that outputs to a console.
Definition: Bridge_NullLogger.c:60
Bridge_ConsoleLogger.h
Declaration of the ConsoleLogger class used in the Bridge Pattern.
Bridge_FileLogger.h
Declaration of the FileLogger class used in the Bridge Pattern.
Bridge_NullLogger.h
Declaration of the NullLogger class used in the Bridge Pattern.
ILogger::loggerType
LoggerTypes loggerType
The type of this logger, as identified by a value from the LoggerTypes enumeration.
Definition: Bridge_ILogger.h:56