标签：
1.概述
在大型软件系统中，为了监测软件运行状况及排查软件故障，一般都会要求软件程序在运行的过程中产生日志文件。在日志文件中存放程序流程中的一些重要信息，包括：变量名称及其值、消息结构定义、函数返回值及其执行情况、脚本执行及调用情况等。通过阅读日志文件，我们能够较快地跟踪程序流程，并发现程序问题。因此，熟练掌握日志系统的编写方法并快速地阅读日志文件，是对一个软件开发工程师的基本要求。
本文详细地介绍了Linux下一个简单的日志系统的设计方法，并给出了其C代码实现。本文为相关开发项目Linux下软件日志系统的编写提供了有益的参考。
2.日志系统的框架结构
一个完整的日志系统包括三大部分：配置文件、软件程序和日志文件，它们之间的关系如图1所示。
图1 一个完整的日志系统的框架结构
从图1可以看出，软件程序处于主导地位，它会从配置文件中读取相关的配置信息(这些配置信息用于控制每条日志信息的生成样式)，经过处理之后将相关信息输出到日志文件中。
3.生成日志文件的程序流程
基于日志系统的框架结构，生成日志文件的程序流程如图2所示。
图2 生成日志文件的程序流程
在实际的软件程序中，为了在程序的不同地方打印不同的日志，要将生成日志的代码封装为函数，作为API供程序调用。
如果软件没有成功生成日志，那么就不要让其继续执行后续流程，而是要查找问题的原因，直到日志生成正常为止。
4.日志文件命名及日志信息格式
对于日志文件的命名，不同的软件开发项目有不同的规定。一般说来，日志文件都是以log作为后缀，如本文中的日志文件命名为：WriteLog.log。
对于每条日志信息的格式，对于不同的软件来说，也会有所不同。在本文中，日志信息的格式有以下两种(具体使用哪一种通过配置项决定)：
第一种：[日志生成时间][文件名][函数名][代码行][日志等级]日志具体信息
第二种：[日志生成时间][日志等级]日志具体信息
5.配置文件说明
本文中使用的配置文件为Config.ini，它包括了两部分信息，如下所示：
<code class="hljs ini has-numbering" style="display: block; padding: 0px; color: inherit; box-sizing: border-box; font-family: 'Source Code Pro', monospace;font-size:undefined; white-space: pre; border-radius: 0px; word-wrap: normal; background: transparent;"><span class="hljs-title" style="box-sizing: border-box; color: rgb(0, 102, 102);">[EMPLOYEEINFO]</span> <span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">;the name of employee</span> <span class="hljs-setting" style="box-sizing: border-box;">EmployeeName=<span class="hljs-value" style="box-sizing: border-box;"></span></span> <span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">;the age of employee</span> <span class="hljs-setting" style="box-sizing: border-box;">EmployeeAge=<span class="hljs-value" style="box-sizing: border-box;"></span></span> <span class="hljs-title" style="box-sizing: border-box; color: rgb(0, 102, 102);">[LOG]</span> <span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">;LogLevel, 0-Fatal 1-Error 2-Warn 3-Info 4-Trace 5-Debug 6-All</span> <span class="hljs-setting" style="box-sizing: border-box;">LogLevel=<span class="hljs-value" style="box-sizing: border-box;"></span></span> <span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">;If output position info(filename/functionname/linenum), 1-Yes 0-No</span> <span class="hljs-setting" style="box-sizing: border-box;">LogPosition=<span class="hljs-value" style="box-sizing: border-box;"></span></span> <span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">;Log dir</span> <span class="hljs-setting" style="box-sizing: border-box;">LogDir=<span class="hljs-value" style="box-sizing: border-box;"></span></span> </code><ul class="pre-numbering" style="box-sizing: border-box; position: absolute; width: 50px; top: 0px; left: 0px; margin: 0px; padding: 6px 0px 40px; border-right-width: 1px; border-right-style: solid; border-right-color: rgb(221, 221, 221); list-style: none; text-align: right; background-color: rgb(238, 238, 238);"><li style="box-sizing: border-box; padding: 0px 5px;">1</li><li style="box-sizing: border-box; padding: 0px 5px;">2</li><li style="box-sizing: border-box; padding: 0px 5px;">3</li><li style="box-sizing: border-box; padding: 0px 5px;">4</li><li style="box-sizing: border-box; padding: 0px 5px;">5</li><li style="box-sizing: border-box; padding: 0px 5px;">6</li><li style="box-sizing: border-box; padding: 0px 5px;">7</li><li style="box-sizing: border-box; padding: 0px 5px;">8</li><li style="box-sizing: border-box; padding: 0px 5px;">9</li><li style="box-sizing: border-box; padding: 0px 5px;">10</li><li style="box-sizing: border-box; padding: 0px 5px;">11</li><li style="box-sizing: border-box; padding: 0px 5px;">12</li><li style="box-sizing: border-box; padding: 0px 5px;">13</li><li style="box-sizing: border-box; padding: 0px 5px;">14</li></ul>
其中，“EMPLOYEEINFO”段是指员工信息，包含员工姓名和员工年龄两个配置项。程序会将员工姓名和员工年龄读入，并输出到日志文件中。
“LOG”段是指日志信息，包含日志等级、日志代码位置标识和输出日志文件的目录三个配置项。对于“LogLevel”配置项，只有代码中日志等级不低于配置值的日志信息才会被输出到日志文件中(例如，LogLevel=4，那么只有Fatal、Error、Warn、Info和Trace等级的日志会被输出到日志文件中)。“LogPosition”配置项的值用于控制是否在日志文件中显示“文件名/函数名/代码行数”信息，1则显示，0则不显示。“LogDir”配置项的值表示生成的日志文件存放的目录。
6.重要程序流程
(1) 从配置文件中读取各个配置项的值
该操作的流程如图3所示，具体请参见《Linux下配置文件读取操作流程及其C代码实现》(http://blog.csdn.net/zhouzhaoxiong1227/article/details/45563263)一文。
图3 配置文件读取操作程序流程
(2) 向日志文件中写入日志信息
该操作的流程如图4所示。
图4 向日志文件中写入日志信息程序流程
该流程的具体代码请参考本文附录中的完整程序代码中的WriteLogFile函数。
7.程序测试设计及文件上传
为了测试本日志系统的功能是否正确，在main函数中设计了以下三类日志信息：
第一类：打印程序的版本号及编译时间。
第二类：打印Fatal、Error、Warn、Info、Trace、Debug、All这七个等级的日志各一条。
第三类：调用GetEmployeeInfo函数打印读取到的员工姓名和年龄。
将本程序“WriteLog.c”上传到Linux的“/home/zhou/zhouzx/test”目录下，并在该目录下建立“etc”和“log”目录，将配置文件“Config.ini”上传到“etc”下。文件及目录布局如图5所示。
图5 文件及目录布局
8.代码编译及运行
在Linux下使用“gcc -g -o WriteLog WriteLog.c”命令对程序进行编译，生成“WriteLog”文件。
下面来运行程序。
(1) 将配置文件中的各个配置项的值设置如下：
<code class="hljs ini has-numbering" style="display: block; padding: 0px; color: inherit; box-sizing: border-box; font-family: 'Source Code Pro', monospace;font-size:undefined; white-space: pre; border-radius: 0px; word-wrap: normal; background: transparent;"><span class="hljs-title" style="box-sizing: border-box; color: rgb(0, 102, 102);">[EMPLOYEEINFO]</span> <span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">;the name of employee</span> <span class="hljs-setting" style="box-sizing: border-box;">EmployeeName=<span class="hljs-value" style="box-sizing: border-box;">wang</span></span> <span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">;the age of employee</span> <span class="hljs-setting" style="box-sizing: border-box;">EmployeeAge=<span class="hljs-value" style="box-sizing: border-box;"><span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">25</span></span></span> <span class="hljs-title" style="box-sizing: border-box; color: rgb(0, 102, 102);">[LOG]</span> <span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">;LogLevel, 0-Fatal 1-Error 2-Warn 3-Info 4-Trace 5-Debug 6-All</span> <span class="hljs-setting" style="box-sizing: border-box;">LogLevel=<span class="hljs-value" style="box-sizing: border-box;"><span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">5</span></span></span> <span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">;If output position info(filename/linenum), 1-Yes 0-No</span> <span class="hljs-setting" style="box-sizing: border-box;">LogPosition=<span class="hljs-value" style="box-sizing: border-box;"><span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">1</span></span></span> <span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">;Log dir</span> <span class="hljs-setting" style="box-sizing: border-box;">LogDir=<span class="hljs-value" style="box-sizing: border-box;">/home/zhou/zhouzx/test/log</span></span> </code><ul class="pre-numbering" style="box-sizing: border-box; position: absolute; width: 50px; top: 0px; left: 0px; margin: 0px; padding: 6px 0px 40px; border-right-width: 1px; border-right-style: solid; border-right-color: rgb(221, 221, 221); list-style: none; text-align: right; background-color: rgb(238, 238, 238);"><li style="box-sizing: border-box; padding: 0px 5px;">1</li><li style="box-sizing: border-box; padding: 0px 5px;">2</li><li style="box-sizing: border-box; padding: 0px 5px;">3</li><li style="box-sizing: border-box; padding: 0px 5px;">4</li><li style="box-sizing: border-box; padding: 0px 5px;">5</li><li style="box-sizing: border-box; padding: 0px 5px;">6</li><li style="box-sizing: border-box; padding: 0px 5px;">7</li><li style="box-sizing: border-box; padding: 0px 5px;">8</li><li style="box-sizing: border-box; padding: 0px 5px;">9</li><li style="box-sizing: border-box; padding: 0px 5px;">10</li><li style="box-sizing: border-box; padding: 0px 5px;">11</li><li style="box-sizing: border-box; padding: 0px 5px;">12</li><li style="box-sizing: border-box; padding: 0px 5px;">13</li><li style="box-sizing: border-box; padding: 0px 5px;">14</li></ul>
则生成的日志文件“WriteLog.log”的内容为：
<code class="hljs markdown has-numbering" style="display: block; padding: 0px; color: inherit; box-sizing: border-box; font-family: 'Source Code Pro', monospace;font-size:undefined; white-space: pre; border-radius: 0px; word-wrap: normal; background: transparent;">[<span class="hljs-link_label" style="box-sizing: border-box;">2015.05.22 11:12:29.402</span>][<span class="hljs-link_reference" style="box-sizing: border-box;">WriteLog.c</span>][<span class="hljs-link_label" style="box-sizing: border-box;">main</span>][<span class="hljs-link_reference" style="box-sizing: border-box;">0077</span>][<span class="hljs-link_label" style="box-sizing: border-box;">INFO</span>]Version [1.0], Build time[May 22 2015 11:11:51]. [<span class="hljs-link_label" style="box-sizing: border-box;">2015.05.22 11:12:29.402</span>][<span class="hljs-link_reference" style="box-sizing: border-box;">WriteLog.c</span>][<span class="hljs-link_label" style="box-sizing: border-box;">main</span>][<span class="hljs-link_reference" style="box-sizing: border-box;">0081</span>][<span class="hljs-link_label" style="box-sizing: border-box;">FATAL</span>]The Fatal log info! [<span class="hljs-link_label" style="box-sizing: border-box;">2015.05.22 11:12:29.402</span>][<span class="hljs-link_reference" style="box-sizing: border-box;">WriteLog.c</span>][<span class="hljs-link_label" style="box-sizing: border-box;">main</span>][<span class="hljs-link_reference" style="box-sizing: border-box;">0085</span>][<span class="hljs-link_label" style="box-sizing: border-box;">ERROR</span>]The Error log info! [<span class="hljs-link_label" style="box-sizing: border-box;">2015.05.22 11:12:29.403</span>][<span class="hljs-link_reference" style="box-sizing: border-box;">WriteLog.c</span>][<span class="hljs-link_label" style="box-sizing: border-box;">main</span>][<span class="hljs-link_reference" style="box-sizing: border-box;">0089</span>][<span class="hljs-link_label" style="box-sizing: border-box;">WARN</span>]The Warn log info! [<span class="hljs-link_label" style="box-sizing: border-box;">2015.05.22 11:12:29.403</span>][<span class="hljs-link_reference" style="box-sizing: border-box;">WriteLog.c</span>][<span class="hljs-link_label" style="box-sizing: border-box;">main</span>][<span class="hljs-link_reference" style="box-sizing: border-box;">0093</span>][<span class="hljs-link_label" style="box-sizing: border-box;">INFO</span>]The Info log info! [<span class="hljs-link_label" style="box-sizing: border-box;">2015.05.22 11:12:29.403</span>][<span class="hljs-link_reference" style="box-sizing: border-box;">WriteLog.c</span>][<span class="hljs-link_label" style="box-sizing: border-box;">main</span>][<span class="hljs-link_reference" style="box-sizing: border-box;">0097</span>][<span class="hljs-link_label" style="box-sizing: border-box;">TRACE</span>]The Trace log info! [<span class="hljs-link_label" style="box-sizing: border-box;">2015.05.22 11:12:29.403</span>][<span class="hljs-link_reference" style="box-sizing: border-box;">WriteLog.c</span>][<span class="hljs-link_label" style="box-sizing: border-box;">main</span>][<span class="hljs-link_reference" style="box-sizing: border-box;">0101</span>][<span class="hljs-link_label" style="box-sizing: border-box;">DEBUG</span>]The Debug log info! [<span class="hljs-link_label" style="box-sizing: border-box;">2015.05.22 11:12:29.403</span>][<span class="hljs-link_reference" style="box-sizing: border-box;">WriteLog.c</span>][<span class="hljs-link_label" style="box-sizing: border-box;">GetEmployeeInfo</span>][<span class="hljs-link_reference" style="box-sizing: border-box;">0144</span>][<span class="hljs-link_label" style="box-sizing: border-box;">INFO</span>]EmployeeName is wang, EmployeeAge is 25 </code><ul class="pre-numbering" style="box-sizing: border-box; position: absolute; width: 50px; top: 0px; left: 0px; margin: 0px; padding: 6px 0px 40px; border-right-width: 1px; border-right-style: solid; border-right-color: rgb(221, 221, 221); list-style: none; text-align: right; background-color: rgb(238, 238, 238);"><li style="box-sizing: border-box; padding: 0px 5px;">1</li><li style="box-sizing: border-box; padding: 0px 5px;">2</li><li style="box-sizing: border-box; padding: 0px 5px;">3</li><li style="box-sizing: border-box; padding: 0px 5px;">4</li><li style="box-sizing: border-box; padding: 0px 5px;">5</li><li style="box-sizing: border-box; padding: 0px 5px;">6</li><li style="box-sizing: border-box; padding: 0px 5px;">7</li><li style="box-sizing: border-box; padding: 0px 5px;">8</li><li style="box-sizing: border-box; padding: 0px 5px;">9</li></ul>
对照配置文件和日志文件，我们可以看到，“LogLevel”设置的是为5，因此只有日志等级不低于5的日志被输出到了日志文件中；“LogPosition”设置的是为1，因此在日志文件中显示了“文件名/函数名/代码行数”的信息。
(2) 将配置文件中的各个配置项的值设置如下：
<code class="hljs ini has-numbering" style="display: block; padding: 0px; color: inherit; box-sizing: border-box; font-family: 'Source Code Pro', monospace;font-size:undefined; white-space: pre; border-radius: 0px; word-wrap: normal; background: transparent;"><span class="hljs-title" style="box-sizing: border-box; color: rgb(0, 102, 102);">[EMPLOYEEINFO]</span> <span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">;the name of employee</span> <span class="hljs-setting" style="box-sizing: border-box;">EmployeeName=<span class="hljs-value" style="box-sizing: border-box;">Li</span></span> <span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">;the age of employee</span> <span class="hljs-setting" style="box-sizing: border-box;">EmployeeAge=<span class="hljs-value" style="box-sizing: border-box;"><span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">28</span></span></span> <span class="hljs-title" style="box-sizing: border-box; color: rgb(0, 102, 102);">[LOG]</span> <span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">;LogLevel, 0-Fatal 1-Error 2-Warn 3-Info 4-Trace 5-Debug 6-All</span> <span class="hljs-setting" style="box-sizing: border-box;">LogLevel=<span class="hljs-value" style="box-sizing: border-box;"><span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">4</span></span></span> <span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">;If output position info(filename/functionname/linenum), 1-Yes 0-No</span> <span class="hljs-setting" style="box-sizing: border-box;">LogPosition=<span class="hljs-value" style="box-sizing: border-box;"><span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0</span></span></span> <span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">;Log dir</span> <span class="hljs-setting" style="box-sizing: border-box;">LogDir=<span class="hljs-value" style="box-sizing: border-box;">/home/zhou/zhouzx/test/log</span></span> </code><ul class="pre-numbering" style="box-sizing: border-box; position: absolute; width: 50px; top: 0px; left: 0px; margin: 0px; padding: 6px 0px 40px; border-right-width: 1px; border-right-style: solid; border-right-color: rgb(221, 221, 221); list-style: none; text-align: right; background-color: rgb(238, 238, 238);"><li style="box-sizing: border-box; padding: 0px 5px;">1</li><li style="box-sizing: border-box; padding: 0px 5px;">2</li><li style="box-sizing: border-box; padding: 0px 5px;">3</li><li style="box-sizing: border-box; padding: 0px 5px;">4</li><li style="box-sizing: border-box; padding: 0px 5px;">5</li><li style="box-sizing: border-box; padding: 0px 5px;">6</li><li style="box-sizing: border-box; padding: 0px 5px;">7</li><li style="box-sizing: border-box; padding: 0px 5px;">8</li><li style="box-sizing: border-box; padding: 0px 5px;">9</li><li style="box-sizing: border-box; padding: 0px 5px;">10</li><li style="box-sizing: border-box; padding: 0px 5px;">11</li><li style="box-sizing: border-box; padding: 0px 5px;">12</li><li style="box-sizing: border-box; padding: 0px 5px;">13</li><li style="box-sizing: border-box; padding: 0px 5px;">14</li></ul>
则生成的日志文件“WriteLog.log”的内容为：
<code class="hljs markdown has-numbering" style="display: block; padding: 0px; color: inherit; box-sizing: border-box; font-family: 'Source Code Pro', monospace;font-size:undefined; white-space: pre; border-radius: 0px; word-wrap: normal; background: transparent;">[<span class="hljs-link_label" style="box-sizing: border-box;">2015.05.22 11:16:53.104</span>][<span class="hljs-link_reference" style="box-sizing: border-box;">INFO</span>]Version [1.0], Build time[May 22 2015 11:11:51]. [<span class="hljs-link_label" style="box-sizing: border-box;">2015.05.22 11:16:53.104</span>][<span class="hljs-link_reference" style="box-sizing: border-box;">FATAL</span>]The Fatal log info! [<span class="hljs-link_label" style="box-sizing: border-box;">2015.05.22 11:16:53.104</span>][<span class="hljs-link_reference" style="box-sizing: border-box;">ERROR</span>]The Error log info! [<span class="hljs-link_label" style="box-sizing: border-box;">2015.05.22 11:16:53.104</span>][<span class="hljs-link_reference" style="box-sizing: border-box;">WARN</span>]The Warn log info! [<span class="hljs-link_label" style="box-sizing: border-box;">2015.05.22 11:16:53.104</span>][<span class="hljs-link_reference" style="box-sizing: border-box;">INFO</span>]The Info log info! [<span class="hljs-link_label" style="box-sizing: border-box;">2015.05.22 11:16:53.104</span>][<span class="hljs-link_reference" style="box-sizing: border-box;">TRACE</span>]The Trace log info! [<span class="hljs-link_label" style="box-sizing: border-box;">2015.05.22 11:16:53.104</span>][<span class="hljs-link_reference" style="box-sizing: border-box;">INFO</span>]EmployeeName is Li, EmployeeAge is 28 </code><ul class="pre-numbering" style="box-sizing: border-box; position: absolute; width: 50px; top: 0px; left: 0px; margin: 0px; padding: 6px 0px 40px; border-right-width: 1px; border-right-style: solid; border-right-color: rgb(221, 221, 221); list-style: none; text-align: right; background-color: rgb(238, 238, 238);"><li style="box-sizing: border-box; padding: 0px 5px;">1</li><li style="box-sizing: border-box; padding: 0px 5px;">2</li><li style="box-sizing: border-box; padding: 0px 5px;">3</li><li style="box-sizing: border-box; padding: 0px 5px;">4</li><li style="box-sizing: border-box; padding: 0px 5px;">5</li><li style="box-sizing: border-box; padding: 0px 5px;">6</li><li style="box-sizing: border-box; padding: 0px 5px;">7</li><li style="box-sizing: border-box; padding: 0px 5px;">8</li></ul>
对照配置文件和日志文件，我们可以看到，“LogLevel”设置的是为4，因此只有日志等级不低于4的日志被输出到了日志文件中；“LogPosition”设置的是为0，因此在日志文件中不显示“文件名/函数名/代码行数”的信息。
为了验证本日志系统功能的正常与否，要对程序进行多组测试，
9.总结
本文对Linux下一个简单的日志系统的设计方法进行了详细的介绍(其C代码实现请见附录)，代码中的写日志相关函数可作为API供其它需要进行类似操作的程序调用。在使用本日志系统的过程中，有以下注意事项：
第一，配置文件中“LOG”段只包括了日志等级、日志代码位置标识和输出日志文件的目录三个配置项。在实际的软件开发项目中，还会有更多的配置参数，像存放的日志文件的最大个数、每个日志文件的大小阈值、每个已写入完成的日志文件的命名等。可以在本程序的基础上进一步扩展来实现复杂的日志功能。
第二，本文中对日志信息的写入采用的是直接在日志文件后面追加的方式，因此每次测试之前，要在“log”目录下删除上一次产生的“WriteLog.log”文件，否则新的日志信息会写入旧的日志文件中。
第三，由于写日志函数WriteLogFile的入参较多，每次调用的时候编写代码较为繁琐，因此使用一个宏WRITELOGFILE来代替，且只需要带上日志等级和日志消息两个参数即可，其它的如代码文件名、函数名和代码行数直接使用系统自定义的宏即可。
附录：完整的程序代码
<code class="hljs markdown has-numbering" style="display: block; padding: 0px; color: inherit; box-sizing: border-box; font-family: 'Source Code Pro', monospace;font-size:undefined; white-space: pre; border-radius: 0px; word-wrap: normal; background: transparent;">/<span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span>
<span class="hljs-bullet" style="box-sizing: border-box;">* </span>版权所有 (C)2015, Zhou Zhaoxiong。
<span class="hljs-bullet" style="box-sizing: border-box;">*
</span><span class="hljs-bullet" style="box-sizing: border-box;">* </span>文件名称：WriteLog.c
<span class="hljs-bullet" style="box-sizing: border-box;">* </span>文件标识：无
<span class="hljs-bullet" style="box-sizing: border-box;">* </span>内容摘要：演示日志信息的打印方法
<span class="hljs-bullet" style="box-sizing: border-box;">* </span>其它说明：无
<span class="hljs-bullet" style="box-sizing: border-box;">* </span>当前版本：V1.0
<span class="hljs-bullet" style="box-sizing: border-box;">* </span>作 者：Zhou Zhaoxiong
<span class="hljs-bullet" style="box-sizing: border-box;">* </span>完成日期：20150522
<span class="hljs-bullet" style="box-sizing: border-box;">*
</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span>/
<span class="hljs-header" style="box-sizing: border-box;">#include <stdio.h></span>
<span class="hljs-header" style="box-sizing: border-box;">#include <time.h></span>
<span class="hljs-header" style="box-sizing: border-box;">#include <sys/time.h></span>
// 重定义数据类型
typedef signed int INT32;
typedef unsigned int UINT32;
typedef unsigned char UINT8;
// 函数宏定义
<span class="hljs-header" style="box-sizing: border-box;">#define WRITELOGFILE(level, msg) WriteLogFile(__FILE__, __FUNCTION__, __LINE__, level, msg)</span>
// 全局变量
UINT32 g_iLogLevel = 0; // 日志等级
UINT32 g_iLogPosition = 0; // 日志位置
UINT8 g_szLogFile[100] = {0}; // 带路径的日志文件名
// 日志级别定义
<span class="hljs-header" style="box-sizing: border-box;">#define LOG_FATAL 0 // 严重错误</span>
<span class="hljs-header" style="box-sizing: border-box;">#define LOG_ERROR 1 // 一般错误</span>
<span class="hljs-header" style="box-sizing: border-box;">#define LOG_WARN 2 // 警告</span>
<span class="hljs-header" style="box-sizing: border-box;">#define LOG_INFO 3 // 一般信息</span>
<span class="hljs-header" style="box-sizing: border-box;">#define LOG_TRACE 4 // 跟踪信息</span>
<span class="hljs-header" style="box-sizing: border-box;">#define LOG_DEBUG 5 // 调试信息</span>
<span class="hljs-header" style="box-sizing: border-box;">#define LOG_ALL 6 // 所有信息</span>
// 员工信息结构体定义
typedef struct
{
<span class="hljs-code" style="box-sizing: border-box;"> UINT8 szEmployeeName[128]; // 员工姓名</span>
<span class="hljs-code" style="box-sizing: border-box;"> INT32 iEmployeeAge; // 员工年龄</span>
} T_EmployeeInfo;
// 函数声明
void WriteLogFile(UINT8 <span class="hljs-emphasis" style="box-sizing: border-box;">*pszFileName, UINT8 *</span>pszFunctionName, UINT32 iCodeLine, UINT32 iLogLevel, UINT8 *pszContent);
UINT8 *LogLevel(UINT32 iLogLevel);
void GetTime(UINT8 *pszTimeStr);
void GetConfigValue();
void GetStringContentValue(FILE <span class="hljs-emphasis" style="box-sizing: border-box;">*fp, UINT8 *</span>pszSectionName, UINT8 <span class="hljs-emphasis" style="box-sizing: border-box;">*pszKeyName, UINT8 *</span>pszOutput, UINT32 iOutputLen);
void GetConfigFileStringValue(UINT8 <span class="hljs-emphasis" style="box-sizing: border-box;">*pszSectionName, UINT8 *</span>pszKeyName, UINT8 <span class="hljs-emphasis" style="box-sizing: border-box;">*pDefaultVal, UINT8 *</span>pszOutput, UINT32 iOutputLen, UINT8 *pszConfigFileName);
INT32 GetConfigFileIntValue(UINT8 <span class="hljs-emphasis" style="box-sizing: border-box;">*pszSectionName, UINT8 *</span>pszKeyName, UINT32 iDefaultVal, UINT8 *pszConfigFileName);
void GetEmployeeInfo();
INT32 main();
/<span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span>
<span class="hljs-bullet" style="box-sizing: border-box;">* </span>功能描述：主函数
<span class="hljs-bullet" style="box-sizing: border-box;">* </span>输入参数：无
<span class="hljs-bullet" style="box-sizing: border-box;">* </span>输出参数：无
<span class="hljs-bullet" style="box-sizing: border-box;">* </span>返 回 值：无
<span class="hljs-bullet" style="box-sizing: border-box;">* </span>其它说明：无
<span class="hljs-bullet" style="box-sizing: border-box;">* </span>修改日期 版本号 修改人 修改内容
<span class="hljs-bullet" style="box-sizing: border-box;">* </span>-------------------------------------------------------------------
<span class="hljs-bullet" style="box-sizing: border-box;">* </span>20150522 V1.0 Zhou Zhaoxiong 创建
<span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span>*/
INT32 main()
{
<span class="hljs-code" style="box-sizing: border-box;"> UINT8 szLogContent[1024] = {0};</span>
<span class="hljs-code" style="box-sizing: border-box;"> // 获取配置文件中各个配置项的值</span>
<span class="hljs-code" style="box-sizing: border-box;"> GetConfigValue();</span>
<span class="hljs-code" style="box-sizing: border-box;"> // 先打印版本相关信息</span>
<span class="hljs-code" style="box-sizing: border-box;"> snprintf(szLogContent, sizeof(szLogContent)-1, "Version [1.0], Build time[%s %s].", __DATE__, __TIME__);</span>
<span class="hljs-code" style="box-sizing: border-box;"> WRITELOGFILE(LOG_INFO, szLogContent);</span>
<span class="hljs-code" style="box-sizing: border-box;"> // 打印第一条日志</span>
<span class="hljs-code" style="box-sizing: border-box;"> snprintf(szLogContent, sizeof(szLogContent)-1, "The Fatal log info!");</span>
<span class="hljs-code" style="box-sizing: border-box;"> WRITELOGFILE(LOG_FATAL, szLogContent);</span>
<span class="hljs-code" style="box-sizing: border-box;"> // 打印第二条日志</span>
<span class="hljs-code" style="box-sizing: border-box;"> snprintf(szLogContent, sizeof(szLogContent)-1, "The Error log info!");</span>
<span class="hljs-code" style="box-sizing: border-box;"> WRITELOGFILE(LOG_ERROR, szLogContent);</span>
<span class="hljs-code" style="box-sizing: border-box;"> // 打印第三条日志</span>
<span class="hljs-code" style="box-sizing: border-box;"> snprintf(szLogContent, sizeof(szLogContent)-1, "The Warn log info!");</span>
<span class="hljs-code" style="box-sizing: border-box;"> WRITELOGFILE(LOG_WARN, szLogContent);</span>
<span class="hljs-code" style="box-sizing: border-box;"> // 打印第四条日志</span>
<span class="hljs-code" style="box-sizing: border-box;"> snprintf(szLogContent, sizeof(szLogContent)-1, "The Info log info!");</span>
<span class="hljs-code" style="box-sizing: border-box;"> WRITELOGFILE(LOG_INFO, szLogContent);</span>
<span class="hljs-code" style="box-sizing: border-box;"> // 打印第五条日志</span>
<span class="hljs-code" style="box-sizing: border-box;"> snprintf(szLogContent, sizeof(szLogContent)-1, "The Trace log info!");</span>
<span class="hljs-code" style="box-sizing: border-box;"> WRITELOGFILE(LOG_TRACE, szLogContent);</span>
<span class="hljs-code" style="box-sizing: border-box;"> // 打印第六条日志</span>
<span class="hljs-code" style="box-sizing: border-box;"> snprintf(szLogContent, sizeof(szLogContent)-1, "The Debug log info!");</span>
<span class="hljs-code" style="box-sizing: border-box;"> WRITELOGFILE(LOG_DEBUG, szLogContent);</span>
<span class="hljs-code" style="box-sizing: border-box;"> // 打印第七条日志</span>
<span class="hljs-code" style="box-sizing: border-box;"> snprintf(szLogContent, sizeof(szLogContent)-1, "The All log info!");</span>
<span class="hljs-code" style="box-sizing: border-box;"> WRITELOGFILE(LOG_ALL, szLogContent);</span>
<span class="hljs-code" style="box-sizing: border-box;"> GetEmployeeInfo(); // 获取并打印员工信息</span>
<span class="hljs-code" style="box-sizing: border-box;"> return 0; </span>
}
/<span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span>
* 功能描述： 获取并打印员工信息
* 输入参数： 无
* 输出参数： 无
* 返 回 值： 无
* 其它说明： 无
* 修改日期 版本号 修改人 修改内容
* -------------------------------------------------------------------
* 20150522 V1.0 Zhou Zhaoxiong 创建
<span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-emphasis" style="box-sizing: border-box;">***</span>/
void GetEmployeeInfo()
{
<span class="hljs-code" style="box-sizing: border-box;"> UINT8 szLogContent[1024] = {0};</span>
<span class="hljs-code" style="box-sizing: border-box;"> T_EmployeeInfo tEmployeeInfo = {0};</span>
<span class="hljs-code" style="box-sizing: border-box;"> // 获取并打印员工信息</span>
<span class="hljs-code" style="box-sizing: border-box;"> // 获取员工姓名</span>
<span class="hljs-code" style="box-sizing: border-box;"> GetConfigFileStringValue("EMPLOYEEINFO", "EmployeeName", "", tEmployeeInfo.szEmployeeName, sizeof(tEmployeeInfo.szEmployeeName), "Config.ini");</span>
<span class="hljs-code" style="box-sizing: border-box;"> // 获取员工年龄</span>
<span class="hljs-code" style="box-sizing: border-box;"> tEmployeeInfo.iEmployeeAge = GetConfigFileIntValue("EMPLOYEEINFO", "EmployeeAge", 0, "Config.ini");</span>
<span class="hljs-code" style="box-sizing: border-box;"> if (tEmployeeInfo.iEmployeeAge == -1) // 判断获取到的年龄是否正确</span>
<span class="hljs-code" style="box-sizing: border-box;"> {</span>
<span class="hljs-code" style="box-sizing: border-box;"> snprintf(szLogContent, sizeof(szLogContent)-1, "GetEmployeeInfo: Get EmployeeAge failed!");</span>
<span class="hljs-code" style="box-sizing: border-box;"> WRITELOGFILE(LOG_ERROR, szLogContent);</span>
<span class="hljs-code" style="box-sizing: border-box;"> return;</span>
<span class="hljs-code" style="box-sizing: border-box;"> }</span>
<span class="hljs-code" style="box-sizing: border-box;"> // 打印读取到的员工姓名和年龄</span>
<span class="hljs-code" style="box-sizing: border-box;"> snprintf(szLogContent, sizeof(szLogContent)-1, "EmployeeName is %s, EmployeeAge is %d", tEmployeeInfo.szEmployeeName, tEmployeeInfo.iEmployeeAge);</span>
<span class="hljs-code" style="box-sizing: border-box;"> WRITELOGFILE(LOG_INFO, szLogContent);</span>
}
/<span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span>
* 功能描述： 将内容写到日志文件中
* 输入参数： pszFileName-代码文件名
<span class="hljs-code" style="box-sizing: border-box;"> pszFunctionName-代码所在函数名</span>
<span class="hljs-code" style="box-sizing: border-box;"> iCodeLine-代码行</span>
<span class="hljs-code" style="box-sizing: border-box;"> iLogLevel-日志等级</span>
<span class="hljs-code" style="box-sizing: border-box;"> pszContent-每条日志的具体内容</span>
* 输出参数： 无
* 返 回 值： 无
* 其它说明： 无
* 修改日期 版本号 修改人 修改内容
* -------------------------------------------------------------------
* 20150522 V1.0 Zhou Zhaoxiong 创建
<span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-emphasis" style="box-sizing: border-box;">***</span>/
void WriteLogFile(UINT8 <span class="hljs-emphasis" style="box-sizing: border-box;">*pszFileName, UINT8 *</span>pszFunctionName, UINT32 iCodeLine, UINT32 iLogLevel, UINT8 *pszContent)
{
<span class="hljs-code" style="box-sizing: border-box;"> FILE *fp = NULL;</span>
<span class="hljs-code" style="box-sizing: border-box;"> UINT8 szLogContent[2048] = {0};</span>
<span class="hljs-code" style="box-sizing: border-box;"> UINT8 szTimeStr[128] = {0};</span>
<span class="hljs-code" style="box-sizing: border-box;"> if (pszFileName == NULL || pszContent == NULL)</span>
<span class="hljs-code" style="box-sizing: border-box;"> {</span>
<span class="hljs-code" style="box-sizing: border-box;"> return;</span>
<span class="hljs-code" style="box-sizing: border-box;"> }</span>
<span class="hljs-code" style="box-sizing: border-box;"> // 过滤日志等级</span>
<span class="hljs-code" style="box-sizing: border-box;"> if (iLogLevel > g_iLogLevel)</span>
<span class="hljs-code" style="box-sizing: border-box;"> {</span>
<span class="hljs-code" style="box-sizing: border-box;"> return;</span>
<span class="hljs-code" style="box-sizing: border-box;"> }</span>
<span class="hljs-code" style="box-sizing: border-box;"> fp = fopen(g_szLogFile, "at+"); // 打开文件, 每次写入的时候在后面追加</span>
<span class="hljs-code" style="box-sizing: border-box;"> if (fp == NULL)</span>
<span class="hljs-code" style="box-sizing: border-box;"> {</span>
<span class="hljs-code" style="box-sizing: border-box;"> return;</span>
<span class="hljs-code" style="box-sizing: border-box;"> }</span>
<span class="hljs-code" style="box-sizing: border-box;"> // 写入日志时间</span>
<span class="hljs-code" style="box-sizing: border-box;"> GetTime(szTimeStr);</span>
<span class="hljs-code" style="box-sizing: border-box;"> fputs(szTimeStr, fp);</span>
<span class="hljs-code" style="box-sizing: border-box;"> // 写入日志内容</span>
<span class="hljs-code" style="box-sizing: border-box;"> if (g_iLogPosition == 1) // 在日志信息中显示"文件名/函数名/代码行数"信息</span>
<span class="hljs-code" style="box-sizing: border-box;"> {</span>
<span class="hljs-code" style="box-sizing: border-box;"> snprintf(szLogContent, sizeof(szLogContent)-1, "[%s][%s][%04d][%s]%s\n", pszFileName, pszFunctionName, iCodeLine, LogLevel(iLogLevel), pszContent);</span>
<span class="hljs-code" style="box-sizing: border-box;"> }</span>
<span class="hljs-code" style="box-sizing: border-box;"> else // 不用在日志信息中显示"文件名/代码行数"信息</span>
<span class="hljs-code" style="box-sizing: border-box;"> {</span>
<span class="hljs-code" style="box-sizing: border-box;"> snprintf(szLogContent, sizeof(szLogContent)-1, "[%s]%s\n", LogLevel(iLogLevel), pszContent);</span>
<span class="hljs-code" style="box-sizing: border-box;"> }</span>
<span class="hljs-code" style="box-sizing: border-box;"> fputs(szLogContent, fp);</span>
<span class="hljs-code" style="box-sizing: border-box;"> fflush(fp); // 刷新文件</span>
<span class="hljs-code" style="box-sizing: border-box;"> fclose(fp); // 关闭文件</span>
<span class="hljs-code" style="box-sizing: border-box;"> fp = NULL; // 将文件指针置为空</span>
<span class="hljs-code" style="box-sizing: border-box;"> return;</span>
}
/<span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span>
* 功能描述： 获取对应的日志等级
* 输入参数： iLogLevel-日志等级
* 输出参数： 无
* 返 回 值： 日志等级信息字符串
* 其它说明： 无
* 修改日期 版本号 修改人 修改内容
* -------------------------------------------------------------------
* 20150522 V1.0 Zhou Zhaoxiong 创建
<span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-emphasis" style="box-sizing: border-box;">***</span>/
UINT8 *LogLevel(UINT32 iLogLevel)
{
<span class="hljs-code" style="box-sizing: border-box;"> switch (iLogLevel)</span>
<span class="hljs-code" style="box-sizing: border-box;"> {</span>
<span class="hljs-code" style="box-sizing: border-box;"> case LOG_FATAL:</span>
<span class="hljs-code" style="box-sizing: border-box;"> {</span>
<span class="hljs-code" style="box-sizing: border-box;"> return "FATAL";</span>
<span class="hljs-code" style="box-sizing: border-box;"> }</span>
<span class="hljs-code" style="box-sizing: border-box;"> case LOG_ERROR: </span>
<span class="hljs-code" style="box-sizing: border-box;"> {</span>
<span class="hljs-code" style="box-sizing: border-box;"> return "ERROR";</span>
<span class="hljs-code" style="box-sizing: border-box;"> }</span>
<span class="hljs-code" style="box-sizing: border-box;"> case LOG_WARN :</span>
<span class="hljs-code" style="box-sizing: border-box;"> {</span>
<span class="hljs-code" style="box-sizing: border-box;"> return "WARN";</span>
<span class="hljs-code" style="box-sizing: border-box;"> }</span>
<span class="hljs-code" style="box-sizing: border-box;"> case LOG_INFO :</span>
<span class="hljs-code" style="box-sizing: border-box;"> {</span>
<span class="hljs-code" style="box-sizing: border-box;"> return "INFO";</span>
<span class="hljs-code" style="box-sizing: border-box;"> }</span>
<span class="hljs-code" style="box-sizing: border-box;"> case LOG_TRACE: </span>
<span class="hljs-code" style="box-sizing: border-box;"> {</span>
<span class="hljs-code" style="box-sizing: border-box;"> return "TRACE";</span>
<span class="hljs-code" style="box-sizing: border-box;"> }</span>
<span class="hljs-code" style="box-sizing: border-box;"> case LOG_DEBUG: </span>
<span class="hljs-code" style="box-sizing: border-box;"> {</span>
<span class="hljs-code" style="box-sizing: border-box;"> return "DEBUG";</span>
<span class="hljs-code" style="box-sizing: border-box;"> }</span>
<span class="hljs-code" style="box-sizing: border-box;"> case LOG_ALL: </span>
<span class="hljs-code" style="box-sizing: border-box;"> {</span>
<span class="hljs-code" style="box-sizing: border-box;"> return "ALL";</span>
<span class="hljs-code" style="box-sizing: border-box;"> }</span>
<span class="hljs-code" style="box-sizing: border-box;"> default: </span>
<span class="hljs-code" style="box-sizing: border-box;"> {</span>
<span class="hljs-code" style="box-sizing: border-box;"> return "OTHER";</span>
<span class="hljs-code" style="box-sizing: border-box;"> }</span>
<span class="hljs-code" style="box-sizing: border-box;"> }</span>
}
/<span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span>
* 功能描述： 获取时间串
* 输入参数： pszTimeStr-时间串
* 输出参数： pszTimeStr-时间串
* 返 回 值： 无
* 其它说明： 时间串样式: YYYY.MM.DD HH:MIN:SS.Usec
* 修改日期 版本号 修改人 修改内容
* -------------------------------------------------------------------
* 20150522 V1.0 Zhou Zhaoxiong 创建
<span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-emphasis" style="box-sizing: border-box;">***</span>/
void GetTime(UINT8 *pszTimeStr)
{
<span class="hljs-code" style="box-sizing: border-box;"> struct tm tSysTime = {0};</span>
<span class="hljs-code" style="box-sizing: border-box;"> struct timeval tTimeVal = {0};</span>
<span class="hljs-code" style="box-sizing: border-box;"> time_t tCurrentTime = {0};</span>
<span class="hljs-code" style="box-sizing: border-box;"> UINT8 szUsec[20] = {0}; // 微秒</span>
<span class="hljs-code" style="box-sizing: border-box;"> UINT8 szMsec[20] = {0}; // 毫秒</span>
<span class="hljs-code" style="box-sizing: border-box;"> if (pszTimeStr == NULL)</span>
<span class="hljs-code" style="box-sizing: border-box;"> {</span>
<span class="hljs-code" style="box-sizing: border-box;"> return;</span>
<span class="hljs-code" style="box-sizing: border-box;"> }</span>
<span class="hljs-code" style="box-sizing: border-box;"> tCurrentTime = time(NULL);</span>
<span class="hljs-code" style="box-sizing: border-box;"> localtime_r(&tCurrentTime, &tSysTime); // localtime_r是线程安全的</span>
<span class="hljs-code" style="box-sizing: border-box;"> gettimeofday(&tTimeVal, NULL); </span>
<span class="hljs-code" style="box-sizing: border-box;"> sprintf(szUsec, "%06d", tTimeVal.tv_usec); // 获取微秒</span>
<span class="hljs-code" style="box-sizing: border-box;"> strncpy(szMsec, szUsec, 3); // 微秒的前3位为毫秒(1毫秒=1000微秒)</span>
<span class="hljs-code" style="box-sizing: border-box;"> sprintf(pszTimeStr, "[%04d.%02d.%02d %02d:%02d:%02d.%3.3s]", </span>
<span class="hljs-code" style="box-sizing: border-box;"> tSysTime.tm_year+1900, tSysTime.tm_mon+1, tSysTime.tm_mday,</span>
<span class="hljs-code" style="box-sizing: border-box;"> tSysTime.tm_hour, tSysTime.tm_min, tSysTime.tm_sec, szMsec);</span>
}
/<span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span>
<span class="hljs-bullet" style="box-sizing: border-box;">* </span>功能描述： 获取配置文件完整路径(包含文件名)
<span class="hljs-bullet" style="box-sizing: border-box;">* </span>输入参数： pszConfigFileName-配置文件名
<span class="hljs-code" style="box-sizing: border-box;"> pszWholePath-配置文件完整路径(包含文件名)</span>
<span class="hljs-bullet" style="box-sizing: border-box;">* </span>输出参数： 无
<span class="hljs-bullet" style="box-sizing: border-box;">* </span>返 回 值： 无
<span class="hljs-bullet" style="box-sizing: border-box;">* </span>其它说明： 无
<span class="hljs-bullet" style="box-sizing: border-box;">* </span>修改日期 版本号 修改人 修改内容
<span class="hljs-bullet" style="box-sizing: border-box;">* </span>------------------------------------------------------------------
<span class="hljs-bullet" style="box-sizing: border-box;">* </span>20150522 V1.0 Zhou Zhaoxiong 创建
<span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-emphasis" style="box-sizing: border-box;">***</span>/
void GetCompletePath(UINT8 <span class="hljs-emphasis" style="box-sizing: border-box;">*pszConfigFileName, UINT8 *</span>pszWholePath)
{
<span class="hljs-code" style="box-sizing: border-box;"> UINT8 *pszHomePath = NULL;</span>
<span class="hljs-code" style="box-sizing: border-box;"> UINT8 szWholePath[256] = {0};</span>
<span class="hljs-code" style="box-sizing: border-box;"> // 先对输入参数进行异常判断</span>
<span class="hljs-code" style="box-sizing: border-box;"> if (pszConfigFileName == NULL || pszWholePath == NULL)</span>
<span class="hljs-code" style="box-sizing: border-box;"> {</span>
<span class="hljs-code" style="box-sizing: border-box;"> return;</span>
<span class="hljs-code" style="box-sizing: border-box;"> }</span>
<span class="hljs-code" style="box-sizing: border-box;"> pszHomePath = (UINT8 *)getenv("HOME"); // 获取当前用户所在的路径</span>
<span class="hljs-code" style="box-sizing: border-box;"> if (pszHomePath == NULL)</span>
<span class="hljs-code" style="box-sizing: border-box;"> {</span>
<span class="hljs-code" style="box-sizing: border-box;"> return;</span>
<span class="hljs-code" style="box-sizing: border-box;"> }</span>
<span class="hljs-code" style="box-sizing: border-box;"> // 拼装配置文件路径</span>
<span class="hljs-code" style="box-sizing: border-box;"> snprintf(szWholePath, sizeof(szWholePath)-1, "%s/zhouzx/test/etc/%s", pszHomePath, pszConfigFileName);</span>
<span class="hljs-code" style="box-sizing: border-box;"> strncpy(pszWholePath, szWholePath, strlen(szWholePath));</span>
}
/<span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span>
* 功能描述： 获取日志配置项的值
* 输入参数： 无
* 输出参数： 无
* 返 回 值： 无
* 其它说明： 无
* 修改日期 版本号 修改人 修改内容
* -------------------------------------------------------------------
* 20150522 V1.0 Zhou Zhaoxiong 创建
<span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-emphasis" style="box-sizing: border-box;">***</span>/
void GetConfigValue()
{
<span class="hljs-code" style="box-sizing: border-box;"> UINT8 szLogDir[256] = {0};</span>
<span class="hljs-code" style="box-sizing: border-box;"> // 日志等级</span>
<span class="hljs-code" style="box-sizing: border-box;"> g_iLogLevel = GetConfigFileIntValue("LOG", "LogLevel", 5, "Config.ini");</span>
<span class="hljs-code" style="box-sizing: border-box;"> // 日志位置</span>
<span class="hljs-code" style="box-sizing: border-box;"> g_iLogPosition = GetConfigFileIntValue("LOG", "LogPosition", 0, "Config.ini");</span>
<span class="hljs-code" style="box-sizing: border-box;"> // 日志文件存放目录</span>
<span class="hljs-code" style="box-sizing: border-box;"> GetConfigFileStringValue("LOG", "LogDir", "", szLogDir, sizeof(szLogDir), "Config.ini");</span>
<span class="hljs-code" style="box-sizing: border-box;"> snprintf(g_szLogFile, sizeof(g_szLogFile)-1, "%s/WriteLog.log", szLogDir);</span>
}
/<span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span>
<span class="hljs-bullet" style="box-sizing: border-box;">* </span>功能描述： 获取具体的字符串值
<span class="hljs-bullet" style="box-sizing: border-box;">* </span>输入参数： fp-配置文件指针
<span class="hljs-code" style="box-sizing: border-box;"> pszSectionName-段名, 如: GENERAL</span>
<span class="hljs-code" style="box-sizing: border-box;"> pszKeyName-配置项名, 如: EmployeeName</span>
<span class="hljs-code" style="box-sizing: border-box;"> iOutputLen-输出缓存长度</span>
<span class="hljs-bullet" style="box-sizing: border-box;">* </span>输出参数： pszOutput-输出缓存
<span class="hljs-bullet" style="box-sizing: border-box;">* </span>返 回 值： 无
<span class="hljs-bullet" style="box-sizing: border-box;">* </span>其它说明： 无
<span class="hljs-bullet" style="box-sizing: border-box;">* </span>修改日期 版本号 修改人 修改内容
<span class="hljs-bullet" style="box-sizing: border-box;">* </span>------------------------------------------------------------------
<span class="hljs-bullet" style="box-sizing: border-box;">* </span>20150522 V1.0 Zhou Zhaoxiong 创建
<span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-emphasis" style="box-sizing: border-box;">***</span>/
void GetStringContentValue(FILE <span class="hljs-emphasis" style="box-sizing: border-box;">*fp, UINT8 *</span>pszSectionName, UINT8 <span class="hljs-emphasis" style="box-sizing: border-box;">*pszKeyName, UINT8 *</span>pszOutput, UINT32 iOutputLen)
{
<span class="hljs-code" style="box-sizing: border-box;"> UINT8 szSectionName[100] = {0};</span>
<span class="hljs-code" style="box-sizing: border-box;"> UINT8 szKeyName[100] = {0};</span>
<span class="hljs-code" style="box-sizing: border-box;"> UINT8 szContentLine[256] = {0};</span>
<span class="hljs-code" style="box-sizing: border-box;"> UINT8 szContentLineBak[256] = {0};</span>
<span class="hljs-code" style="box-sizing: border-box;"> UINT32 iContentLineLen = 0;</span>
<span class="hljs-code" style="box-sizing: border-box;"> UINT32 iPositionFlag = 0;</span>
<span class="hljs-code" style="box-sizing: border-box;"> // 先对输入参数进行异常判断</span>
<span class="hljs-code" style="box-sizing: border-box;"> if (fp == NULL || pszSectionName == NULL || pszKeyName == NULL || pszOutput == NULL)</span>
<span class="hljs-code" style="box-sizing: border-box;"> {</span>
<span class="hljs-code" style="box-sizing: border-box;"> printf("GetStringContentValue: input parameter(s) is NULL!\n");</span>
<span class="hljs-code" style="box-sizing: border-box;"> return;</span>
<span class="hljs-code" style="box-sizing: border-box;"> }</span>
<span class="hljs-code" style="box-sizing: border-box;"> sprintf(szSectionName, "[%s]", pszSectionName);</span>
<span class="hljs-code" style="box-sizing: border-box;"> strcpy(szKeyName, pszKeyName);</span>
<span class="hljs-code" style="box-sizing: border-box;"> while (feof(fp) == 0)</span>
<span class="hljs-code" style="box-sizing: border-box;"> {</span>
<span class="hljs-code" style="box-sizing: border-box;"> memset(szContentLine, 0x00, sizeof(szContentLine));</span>
<span class="hljs-code" style="box-sizing: border-box;"> fgets(szContentLine, sizeof(szContentLine), fp); // 获取段名</span>
<span class="hljs-code" style="box-sizing: border-box;"> // 判断是否是注释行(以;开头的行就是注释行)或以其他特殊字符开头的行</span>
<span class="hljs-code" style="box-sizing: border-box;"> if (szContentLine[0] == ';' || szContentLine[0] == '\r' || szContentLine[0] == '\n' || szContentLine[0] == '\0')</span>
<span class="hljs-code" style="box-sizing: border-box;"> {</span>
<span class="hljs-code" style="box-sizing: border-box;"> continue;</span>
<span class="hljs-code" style="box-sizing: border-box;"> }</span>
<span class="hljs-code" style="box-sizing: border-box;"> // 匹配段名</span>
<span class="hljs-code" style="box-sizing: border-box;"> if (strncasecmp(szSectionName, szContentLine, strlen(szSectionName)) == 0) </span>
<span class="hljs-code" style="box-sizing: border-box;"> {</span>
<span class="hljs-code" style="box-sizing: border-box;"> while (feof(fp) == 0)</span>
<span class="hljs-code" style="box-sizing: border-box;"> {</span>
<span class="hljs-code" style="box-sizing: border-box;"> memset(szContentLine, 0x00, sizeof(szContentLine));</span>
<span class="hljs-code" style="box-sizing: border-box;"> memset(szContentLineBak, 0x00, sizeof(szContentLineBak));</span>
<span class="hljs-code" style="box-sizing: border-box;"> fgets(szContentLine, sizeof(szContentLine), fp); // 获取字段值</span>
<span class="hljs-code" style="box-sizing: border-box;"> // 判断是否是注释行(以;开头的行就是注释行)</span>
<span class="hljs-code" style="box-sizing: border-box;"> if (szContentLine[0] == ';')</span>
<span class="hljs-code" style="box-sizing: border-box;"> {</span>
<span class="hljs-code" style="box-sizing: border-box;"> continue;</span>
<span class="hljs-code" style="box-sizing: border-box;"> }</span>
<span class="hljs-code" style="box-sizing: border-box;"> memcpy(szContentLineBak, szContentLine, strlen(szContentLine));</span>
<span class="hljs-code" style="box-sizing: border-box;"> // 匹配配置项名</span>
<span class="hljs-code" style="box-sizing: border-box;"> if (strncasecmp(szKeyName, szContentLineBak, strlen(szKeyName)) == 0) </span>
<span class="hljs-code" style="box-sizing: border-box;"> {</span>
<span class="hljs-code" style="box-sizing: border-box;"> iContentLineLen = strlen(szContentLine);</span>
<span class="hljs-code" style="box-sizing: border-box;"> for (iPositionFlag = strlen(szKeyName); iPositionFlag <= iContentLineLen; iPositionFlag ++)</span>
<span class="hljs-code" style="box-sizing: border-box;"> {</span>
<span class="hljs-code" style="box-sizing: border-box;"> if (szContentLine[iPositionFlag] == ' ')</span>
<span class="hljs-code" style="box-sizing: border-box;"> {</span>
<span class="hljs-code" style="box-sizing: border-box;"> continue;</span>
<span class="hljs-code" style="box-sizing: border-box;"> }</span>
<span class="hljs-code" style="box-sizing: border-box;"> if (szContentLine[iPositionFlag] == '=')</span>
<span class="hljs-code" style="box-sizing: border-box;"> {</span>
<span class="hljs-code" style="box-sizing: border-box;"> break;</span>
<span class="hljs-code" style="box-sizing: border-box;"> }</span>
<span class="hljs-code" style="box-sizing: border-box;"> iPositionFlag = iContentLineLen + 1;</span>
<span class="hljs-code" style="box-sizing: border-box;"> break;</span>
<span class="hljs-code" style="box-sizing: border-box;"> }</span>
<span class="hljs-code" style="box-sizing: border-box;"> iPositionFlag = iPositionFlag + 1; // 跳过=的位置</span>
<span class="hljs-code" style="box-sizing: border-box;"> if (iPositionFlag > iContentLineLen)</span>
<span class="hljs-code" style="box-sizing: border-box;"> {</span>
<span class="hljs-code" style="box-sizing: border-box;"> continue;</span>
<span class="hljs-code" style="box-sizing: border-box;"> }</span>
<span class="hljs-code" style="box-sizing: border-box;"> memset(szContentLine, 0x00, sizeof(szContentLine));</span>
<span class="hljs-code" style="box-sizing: border-box;"> strcpy(szContentLine, szContentLineBak + iPositionFlag);</span>
<span class="hljs-code" style="box-sizing: border-box;"> // 去掉内容中的无关字符</span>
<span class="hljs-code" style="box-sizing: border-box;"> for (iPositionFlag = 0; iPositionFlag < strlen(szContentLine); iPositionFlag ++)</span>
<span class="hljs-code" style="box-sizing: border-box;"> {</span>
<span class="hljs-code" style="box-sizing: border-box;"> if (szContentLine[iPositionFlag] == '\r' || szContentLine[iPositionFlag] == '\n' || szContentLine[iPositionFlag] == '\0')</span>
<span class="hljs-code" style="box-sizing: border-box;"> {</span>
<span class="hljs-code" style="box-sizing: border-box;"> szContentLine[iPositionFlag] = '\0';</span>
<span class="hljs-code" style="box-sizing: border-box;"> break;</span>
<span class="hljs-code" style="box-sizing: border-box;"> }</span>
<span class="hljs-code" style="box-sizing: border-box;"> }</span>
<span class="hljs-code" style="box-sizing: border-box;"> // 将配置项内容拷贝到输出缓存中</span>
<span class="hljs-code" style="box-sizing: border-box;"> strncpy(pszOutput, szContentLine, iOutputLen-1);</span>
<span class="hljs-code" style="box-sizing: border-box;"> break;</span>
<span class="hljs-code" style="box-sizing: border-box;"> }</span>
<span class="hljs-code" style="box-sizing: border-box;"> else if (szContentLine[0] == '[')</span>
<span class="hljs-code" style="box-sizing: border-box;"> {</span>
<span class="hljs-code" style="box-sizing: border-box;"> break;</span>
<span class="hljs-code" style="box-sizing: border-box;"> }</span>
<span class="hljs-code" style="box-sizing: border-box;"> }</span>
<span class="hljs-code" style="box-sizing: border-box;"> break;</span>
<span class="hljs-code" style="box-sizing: border-box;"> }</span>
<span class="hljs-code" style="box-sizing: border-box;"> }</span>
}
/<span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span>
<span class="hljs-bullet" style="box-sizing: border-box;">* </span>功能描述： 从配置文件中获取字符串
<span class="hljs-bullet" style="box-sizing: border-box;">* </span>输入参数： pszSectionName-段名, 如: GENERAL
<span class="hljs-code" style="box-sizing: border-box;"> pszKeyName-配置项名, 如: EmployeeName</span>
<span class="hljs-code" style="box-sizing: border-box;"> pDefaultVal-默认值</span>
<span class="hljs-code" style="box-sizing: border-box;"> iOutputLen-输出缓存长度</span>
<span class="hljs-code" style="box-sizing: border-box;"> pszConfigFileName-配置文件名</span>
<span class="hljs-bullet" style="box-sizing: border-box;">* </span>输出参数： pszOutput-输出缓存
<span class="hljs-bullet" style="box-sizing: border-box;">* </span>返 回 值： 无
<span class="hljs-bullet" style="box-sizing: border-box;">* </span>其它说明： 无
<span class="hljs-bullet" style="box-sizing: border-box;">* </span>修改日期 版本号 修改人 修改内容
<span class="hljs-bullet" style="box-sizing: border-box;">* </span>------------------------------------------------------------------
<span class="hljs-bullet" style="box-sizing: border-box;">* </span>20150522 V1.0 Zhou Zhaoxiong 创建
<span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-emphasis" style="box-sizing: border-box;">***</span>/
void GetConfigFileStringValue(UINT8 <span class="hljs-emphasis" style="box-sizing: border-box;">*pszSectionName, UINT8 *</span>pszKeyName, UINT8 <span class="hljs-emphasis" style="box-sizing: border-box;">*pDefaultVal, UINT8 *</span>pszOutput, UINT32 iOutputLen, UINT8 *pszConfigFileName)
{
<span class="hljs-code" style="box-sizing: border-box;"> FILE *fp = NULL;</span>
<span class="hljs-code" style="box-sizing: border-box;"> UINT8 szWholePath[256] = {0};</span>
<span class="hljs-code" style="box-sizing: border-box;"> // 先对输入参数进行异常判断</span>
<span class="hljs-code" style="box-sizing: border-box;"> if (pszSectionName == NULL || pszKeyName == NULL || pszOutput == NULL || pszConfigFileName == NULL)</span>
<span class="hljs-code" style="box-sizing: border-box;"> {</span>
<span class="hljs-code" style="box-sizing: border-box;"> printf("GetConfigFileStringValue: input parameter(s) is NULL!\n");</span>
<span class="hljs-code" style="box-sizing: border-box;"> return;</span>
<span class="hljs-code" style="box-sizing: border-box;"> }</span>
<span class="hljs-code" style="box-sizing: border-box;"> // 获取默认值</span>
<span class="hljs-code" style="box-sizing: border-box;"> if (pDefaultVal == NULL)</span>
<span class="hljs-code" style="box-sizing: border-box;"> {</span>
<span class="hljs-code" style="box-sizing: border-box;"> strcpy(pszOutput, "");</span>
<span class="hljs-code" style="box-sizing: border-box;"> }</span>
<span class="hljs-code" style="box-sizing: border-box;"> else</span>
<span class="hljs-code" style="box-sizing: border-box;"> {</span>
<span class="hljs-code" style="box-sizing: border-box;"> strcpy(pszOutput, pDefaultVal);</span>
<span class="hljs-code" style="box-sizing: border-box;"> }</span>
<span class="hljs-code" style="box-sizing: border-box;"> // 打开配置文件</span>
<span class="hljs-code" style="box-sizing: border-box;"> GetCompletePath(pszConfigFileName, szWholePath);</span>
<span class="hljs-code" style="box-sizing: border-box;"> fp = fopen(szWholePath, "r");</span>
<span class="hljs-code" style="box-sizing: border-box;"> if (fp == NULL)</span>
<span class="hljs-code" style="box-sizing: border-box;"> {</span>
<span class="hljs-code" style="box-sizing: border-box;"> printf("GetConfigFileStringValue: open %s failed!\n", szWholePath);</span>
<span class="hljs-code" style="box-sizing: border-box;"> return;</span>
<span class="hljs-code" style="box-sizing: border-box;"> }</span>
<span class="hljs-code" style="box-sizing: border-box;"> // 调用函数用于获取具体配置项的值</span>
<span class="hljs-code" style="box-sizing: border-box;"> GetStringContentValue(fp, pszSectionName, pszKeyName, pszOutput, iOutputLen);</span>
<span class="hljs-code" style="box-sizing: border-box;"> // 关闭文件</span>
<span class="hljs-code" style="box-sizing: border-box;"> fclose(fp);</span>
<span class="hljs-code" style="box-sizing: border-box;"> fp = NULL;</span>
}
/<span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span>
<span class="hljs-bullet" style="box-sizing: border-box;">* </span>功能描述： 从配置文件中获取整型变量
<span class="hljs-bullet" style="box-sizing: border-box;">* </span>输入参数： pszSectionName-段名, 如: GENERAL
<span class="hljs-code" style="box-sizing: border-box;"> pszKeyName-配置项名, 如: EmployeeName</span>
<span class="hljs-code" style="box-sizing: border-box;"> iDefaultVal-默认值</span>
<span class="hljs-code" style="box-sizing: border-box;"> pszConfigFileName-配置文件名</span>
<span class="hljs-bullet" style="box-sizing: border-box;">* </span>输出参数： 无
<span class="hljs-bullet" style="box-sizing: border-box;">* </span>返 回 值： iGetValue-获取到的整数值 -1-获取失败
<span class="hljs-bullet" style="box-sizing: border-box;">* </span>其它说明： 无
<span class="hljs-bullet" style="box-sizing: border-box;">* </span>修改日期 版本号 修改人 修改内容
<span class="hljs-bullet" style="box-sizing: border-box;">* </span>------------------------------------------------------------------
<span class="hljs-bullet" style="box-sizing: border-box;">* </span>20150522 V1.0 Zhou Zhaoxiong 创建
<span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-strong" style="box-sizing: border-box;">*****</span><span class="hljs-emphasis" style="box-sizing: border-box;">***</span>/
INT32 GetConfigFileIntValue(UINT8 <span class="hljs-emphasis" style="box-sizing: border-box;">*pszSectionName, UINT8 *</span>pszKeyName, UINT32 iDefaultVal, UINT8 *pszConfigFileName)
{
<span class="hljs-code" style="box-sizing: border-box;"> UINT8 szGetValue[512] = {0};</span>
<span class="hljs-code" style="box-sizing: border-box;"> INT32 iGetValue = 0;</span>
<span class="hljs-code" style="box-sizing: border-box;"> // 先对输入参数进行异常判断</span>
<span class="hljs-code" style="box-sizing: border-box;"> if (pszSectionName == NULL || pszKeyName == NULL || pszConfigFileName == NULL)</span>
<span class="hljs-code" style="box-sizing: border-box;"> {</span>
<span class="hljs-code" style="box-sizing: border-box;"> printf("GetConfigFileIntValue: input parameter(s) is NULL!\n");</span>
<span class="hljs-code" style="box-sizing: border-box;"> return -1;</span>
<span class="hljs-code" style="box-sizing: border-box;"> }</span>
<span class="hljs-code" style="box-sizing: border-box;"> GetConfigFileStringValue(pszSectionName, pszKeyName, NULL, szGetValue, 512-1, pszConfigFileName); // 先将获取的值存放在字符型缓存中</span>
<span class="hljs-code" style="box-sizing: border-box;"> if (szGetValue[0] == '\0' || szGetValue[0] == ';') // 如果是结束符或分号, 则使用默认值</span>
<span class="hljs-code" style="box-sizing: border-box;"> {</span>
<span class="hljs-code" style="box-sizing: border-box;"> iGetValue = iDefaultVal;</span>
<span class="hljs-code" style="box-sizing: border-box;"> }</span>
<span class="hljs-code" style="box-sizing: border-box;"> else</span>
<span class="hljs-code" style="box-sizing: border-box;"> {</span>
<span class="hljs-code" style="box-sizing: border-box;"> iGetValue = atoi(szGetValue);</span>
<span class="hljs-code" style="box-sizing: border-box;"> }</span>
<span class="hljs-code" style="box-sizing: border-box;"> return iGetValue;</span>
}</code>标签：
原文地址：http://blog.csdn.net/g__hk/article/details/46225769
