风之谷

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http://jnn.blogbus.com/logs/1879308.html

代码部分

 void

log4cplus::PropertyConfigurator::replaceEnvironVariables()

{

std::vector<log4cplus::tstring> keys = properties.propertyNames();

// 解析属性文件中的内容, 需要定义什么是主属性,什么次属性

-- 注意 propertyName 以及 substEnvironVars

    std::vector<log4cplus::tstring>::iterator it = keys.begin();

    for(; it!=keys.end(); ++it) {

        log4cplus::tstring key = *it;

        log4cplus::tstring val = properties.getProperty(key);

        log4cplus::tstring subKey = substEnvironVars(key, getLogLog());

        if(subKey != key) {

            properties.removeProperty(key);

            properties.setProperty(subKey, val);

        }

        log4cplus::tstring subVal = substEnvironVars(val, getLogLog());

        if(subVal != val) {

            properties.setProperty(subKey, subVal);

        }

    }

}

void

log4cplus::PropertyConfigurator::configureLoggers()

{

    // 定义属性文件的属性项

    if(properties.exists( LOG4CPLUS_TEXT("rootLogger") )) {

        Logger root = h.getRoot();

        // 加载有关根log模块的信息

        configureLogger(root,

        properties.getProperty(LOG4CPLUS_TEXT("rootLogger")));

    }

    // 获取子属性部件

    Properties loggerProperties =

            properties.getPropertySubset(LOG4CPLUS_TEXT("logger."));

vector<tstring> loggers = loggerProperties.propertyNames();

// 注意ConfigureLogger部分的内容,获取有关属性值的描述

    for(vector<tstring>::iterator it=loggers.begin(); it!=loggers.end(); ++it) {

        Logger log = getLogger(*it);

        configureLogger(log, loggerProperties.getProperty(*it));

    }

}

void

log4cplus::PropertyConfigurator::configureLogger(log4cplus::Logger logger,

                                                 const log4cplus::tstring& config)

{

    // Remove all spaces from config

tstring configString;

//如何实现trim的功能，实现一个范型的方法调用

    remove_copy_if(config.begin(), config.end(),

                   string_append_iterator<tstring>(configString),

                   bind1st(equal_to<tchar>(), ' '));

// "Tokenize" configString

// 分离字符部分的内容,按照  “,”进行分隔

    vector<tstring> tokens;

    tokenize(configString, ',',

             back_insert_iterator<vector<tstring> >(tokens));

    if(tokens.size() == 0) {

        getLogLog().error(  LOG4CPLUS_TEXT("PropertyConfigurator::configureLogger()- Invalid config string(Logger = ")

                          + logger.getName()

                          + LOG4CPLUS_TEXT("): \"")

                          + config 

                          + LOG4CPLUS_TEXT("\""));

        return;

    }