android_logger_config.h

/* ------------------------------------------------------------------
 * Copyright (C) 2009 PacketVideo
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
 * express or implied.
 * See the License for the specific language governing permissions
 * and limitations under the License.
 * -------------------------------------------------------------------
 */

#ifndef ANDROID_LOGGER_CONFIG_H
#define ANDROID_LOGGER_CONFIG_H

#include "author/authordriver.h"
#include "android_log_appender.h"

#define MAX_STRING_LEN  255

FILE *file;

class PVLoggerConfigFile{
/*  
    To configure logging at runtime, a file pvlogger.txt must be located in the sdcard.
    The format for log level and logger tag in the file should be: "level,node".  Note that there should be no space between log level and logger tag.
    For example, pvlogger.txt can look like:
    1,PVPlayerEngine
    8,PVSocketNode
    Above example means log the message level PVLOGMSG_ALERT for PVPlayerEngine and PVLOGMSG_DEBUG for PVSocketNode.  See pvlogger.h for log level values.
*/
public:
    PVLoggerConfigFile():iLogFileRead(false)
    {
        iFileServer.Connect();
        iLogFileName[MAX_STRING_LEN] = '\0';
        oscl_strncpy(iLogFileName,"/sdcard/pvlogger.txt", MAX_STRING_LEN);
        oscl_memset(ibuffer, 0, sizeof(ibuffer));
    }

    ~PVLoggerConfigFile()
    {
        iFileServer.Close();
    }

    bool IsLoggerConfigFilePresent()
    {
        if(-1 != ReadAndParseLoggerConfigFile())
            return true;
        return false;
    }

    //Read and parse the config file
    //retval = -1 if the config file doesnt exist
    int8 ReadAndParseLoggerConfigFile()
    {
        int8 retval = 1;

        if(0 != iLogFile.Open(iLogFileName,Oscl_File::MODE_READ, iFileServer))
        {
            retval = -1;
        }
        else
        {
            if(!iLogFileRead)
            {
                int32 nCharRead = iLogFile.Read(ibuffer,1, sizeof(ibuffer));
                //Parse the buffer for \n chars
                Oscl_Vector<char*,OsclMemAllocator> LogConfigStrings;

                //Get the logger strings
                const char* const lnFd = "\n";
                const int8 lnFdLen = oscl_strlen(lnFd);
                int16 offset = 0;
                char* lastValidBffrAddr = ibuffer + oscl_strlen(ibuffer);
                const char* lnFdIndx = oscl_strstr(ibuffer, lnFd);
                while(lnFdIndx!=NULL && lnFdIndx < lastValidBffrAddr)
                {
                    oscl_memset((char*)lnFdIndx, '\0', lnFdLen);
                    LogConfigStrings.push_back(ibuffer + offset);
                    offset = (lnFdIndx + lnFdLen) - ibuffer;
                    lnFdIndx = oscl_strstr(ibuffer + offset, lnFd);
                }
                if(NULL == lnFdIndx && ((ibuffer + offset) < lastValidBffrAddr))
                {
                    LogConfigStrings.push_back(ibuffer + offset);
                }

                //Populate the  LoggerConfigElements vector
                {
                    if(!LogConfigStrings.empty())
                    {
                        Oscl_Vector<char*,OsclMemAllocator>::iterator it;
                        if(LogConfigStrings.size() > 0)
                        {
                            for (it = LogConfigStrings.begin(); it!= LogConfigStrings.end(); it++)
                            {
                                char* hashIndex = OSCL_CONST_CAST(char*, oscl_strstr(*it, "#"));
                                char* CommaIndex = OSCL_CONST_CAST(char*, oscl_strstr(*it, ","));
                                // Skip lines with hash
                                if (hashIndex == NULL)
                                {
                                    if(CommaIndex != NULL)
                                    {
                                        *CommaIndex = '\0';
                                        LoggerConfigElement obj;
                                        uint32 logLevel;
                                        PV_atoi(*it,'d',oscl_strlen(*it),logLevel);
                                        obj.iLogLevel = logLevel;
                                        obj.iLoggerString= CommaIndex +1;
                                        iLoggerConfigElements.push_back(obj);
                                    }
                                    else
                                    {
                                        //Add the config element for logging all the modules with specified log level
                                        LoggerConfigElement obj;
                                        uint32 logLevel;
                                        PV_atoi(*it,'d',oscl_strlen(*it),logLevel);
                                        obj.iLoggerString = "";
                                        obj.iLogLevel = logLevel;
                                        iLoggerConfigElements.push_back(obj);
                                    }
                                }
                            }
                        }
                    }
                    else
                    {
                        //Add the config element for complete logging for all the modules
                        LoggerConfigElement obj;
                        obj.iLoggerString = "";
                        obj.iLogLevel = 8;
                        iLoggerConfigElements.push_back(obj);
                    }
                }
                iLogFile.Close();
                iLogFileRead = true;
            }
        }
        return retval;
    }

    void SetLoggerSettings()
    {
        Oscl_Vector<LoggerConfigElement, OsclMemAllocator>::iterator it;

        PVLoggerAppender *appender=NULL;
        OsclRefCounter *refCounter=NULL;
        if(iLoggerConfigElements.empty())
        {
            return;
        }
        
        appender = new AndroidLogAppender<TimeAndIdLayout,1024>();
        OsclRefCounterSA<LogAppenderDestructDealloc<AndroidLogAppender<TimeAndIdLayout,1024> > > *appenderRefCounter =
            new OsclRefCounterSA<LogAppenderDestructDealloc<AndroidLogAppender<TimeAndIdLayout,1024> > >(appender);
        refCounter = appenderRefCounter;

        OsclSharedPtr<PVLoggerAppender> appenderPtr(appender,refCounter);

        for (it = iLoggerConfigElements.begin(); it!= iLoggerConfigElements.end(); it++)
        {
            PVLogger *node = NULL;
            node = PVLogger::GetLoggerObject(it->iLoggerString);
            node->AddAppender(appenderPtr);
            node->SetLogLevel(it->iLogLevel);
        }
    }

private:
    class LoggerConfigElement{
        public:
        LoggerConfigElement()
        {
            iLoggerString = NULL;
            iLogLevel = 8;
        }
        char *iLoggerString;
        int8 iLogLevel;
    };
    bool iLogFileRead;
    Oscl_File iLogFile;
    Oscl_FileServer iFileServer;
    char iLogFileName[MAX_STRING_LEN+1];
    char ibuffer[1024];
    Oscl_Vector<LoggerConfigElement, OsclMemAllocator> iLoggerConfigElements;
};

#endif