/*

* Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies). 

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of "Eclipse Public License v1.0"

* which accompanies this distribution, and is available

* at the URL "http://www.eclipse.org/legal/epl-v10.html".

*

* Initial Contributors:

* Nokia Corporation - initial contribution.

*

* Contributors:

*

* Description:  

*

*/

#include <f32file.h>

#include <e32cons.h>

#include "ProfilerEshell.h"

#include <piprofiler/ProfilerSession.h>

_LIT(KProfilerEngineExe, "PIProfilerEngine.exe");

/*

 *

 * Static methods for controlling the profiler

 * through command line

 *

 */

// --------------------------------------------------------------------------------------------

static void PrintUsageInfo(const TDesC& aAdditionalInfo)

    {

    _LIT(KConsoleName, "Console");

    _LIT(KLegalNote, "PIProfiler Version 2.00.0 Copyright @ 2009 Nokia\n");

    _LIT(KUsageNote, "Usage: PIProfiler [start/end/timed] settingsfile [time to run]\n");

    _LIT(KExample, "Example: PIProfiler timed C:\\data\\piprofilersettings.txt 60\n");

    TRAP_IGNORE(CConsoleBase* console = Console::NewL(KConsoleName,TSize(KConsFullScreen,KConsFullScreen));

        console->Printf(KLegalNote);

        console->Printf(KUsageNote);

        console->Printf(KExample);

        console->Write(aAdditionalInfo);

        console->Printf(_L("\n[Press any key]"));

        console->Getch();

        delete console;);

    }

// --------------------------------------------------------------------------------------------

static TInt FindProcess()

    {

    TFindProcess procName;

    procName.Find(_L("PIProfilerEngine.exe*"));

    TFullName aResult;

    // find the first appearance, i.e. "myself"...

    TInt err(procName.Next(aResult));  // the first appearance

    if(err == KErrNotFound)

        {

        // now check if old Profiler is still running on

        procName.Find(_L("BappeaProf.exe*"));

        err = procName.Next(aResult);

        // check if old profiler process found 

        if(err == KErrNone)

            {

            // return error for error handling

            return KErrAlreadyExists;

            }

        // return KErrNotFound and a new profiler engine process can be started

        return KErrNotFound;

        }

    return err;

    }

/**

 * Function for starting profiler engine in the background,

 * call profiler to load settings

 * and start sampling process

 * 

 * @param configFile name and location of settings file

 */

// --------------------------------------------------------------------------------------------

static TInt StartProfilerProcess(const TDesC& configFile, TInt aRunTimeInSeconds)

    {

    TInt err(KErrNone);

    RProcess proc;

    TRequestStatus status = KRequestPending;

    // check if process exists

    err = FindProcess();

    LOGSTRING2(_L("PIProfiler: tried to find process, response %d"), err); 

    // check if already exists and don't start a new eshell profiling

    if( err == KErrNotFound )

        {

        // try create new process

        err = proc.Create(KProfilerEngineExe, configFile);

        LOGSTRING2(_L("PIProfiler: created process, response %d"), err); 

        // check if RProcess::Create() succeeded

        if( err == KErrNone )

            {

            // kick off the engine process

            proc.Resume();

            // wait for the constructor to complete 

            proc.Rendezvous(status); // Trigger rendezvous on the supplied TRequestStatus object

            User::WaitForRequest(status); 

            // just lose the handle

            proc.Close();

            // check if command succesfull

            if( err != KErrNone )

                {

                LOGTEXT(_L("Profiler: could not connect engine"));

                return err;

                }

            // start sampling, using settings found in settings file or if not found the default settings

            err = RProfiler::StartSampling();

            // check if command succesful

            if( err != KErrNone )

                {

                _LIT(KNoteProfilerCannotStart, "PI Profiler: cannot start PI Profiler, check settings!");

                PrintUsageInfo(KNoteProfilerCannotStart);

                // check if process still alive

                if(err != KErrNotFound)

                    {

                    // exit the profiler process since process was started

                    RProfiler::ExitProfiler();

                    }

                return err;

                }

            if(aRunTimeInSeconds > 0)

                {

                RDebug::Print(_L("Profiler running for %d s... "), aRunTimeInSeconds);

                User::After(aRunTimeInSeconds*1000000);

                RDebug::Print(_L("************* Profiler process closing *********"));

                // stop sampling process

                err = RProfiler::StopSampling();

                // check if command succesfull

                if( err != KErrNone )

                    {

                    LOGTEXT(_L("Profiler: could not connect engine, stop failed"));

                    return err;

                    }

                // exit the profiler process

                err = RProfiler::ExitProfiler();

                // check if command succesfull

                if( err != KErrNone )

                    {

                    LOGTEXT(_L("Profiler: could not connect engine, exit failed"));

                    return err;

                    }

                }

            } 

        else

            {

            _LIT(KNoteCannotFindProfiler, "PI Profiler: could not find PIProfilerEngine.exe");

            PrintUsageInfo(KNoteCannotFindProfiler);

            }

        }

    // check if old Profiler is already running

    else if( err == KErrAlreadyExists )

        {

        _LIT(KNoteAlreadyRunning, "PI Profiler: old Profiler process already running, close it down before launching the new!");

        PrintUsageInfo(KNoteAlreadyRunning);

        }

    // otherwise show error note

    else

        {

        _LIT(KNoteAlreadyRunning, "PI Profiler: already running, not able to launch new one. NOTE: check if UI running!");

        PrintUsageInfo(KNoteAlreadyRunning);

        }

    return KErrNone;

    }

// --------------------------------------------------------------------------------------------

static TInt EndProfilerProcess()

    {

    LOGTEXT(_L("EndProfilerProcess() ..."));

    // call profiler to stop sampling

    TInt err = RProfiler::StopSampling();

    // check if command succesfull

    if( err != KErrNone )

        {

        LOGTEXT(_L("Profiler: could not connect engine, stop failed"));

        return err;

        }

    // exit the profiler process

    err = RProfiler::ExitProfiler();

    // check if command succesfull

    if( err != KErrNone )

        {

        LOGTEXT(_L("Profiler: could not connect engine, exit failed"));

        return err;

        }

    return KErrNone;

    }

// --------------------------------------------------------------------------------------------

static TInt TestSettingsFile(const TDesC& configFile)

    {

    RFs fs;

    RFile file;

    TInt err(KErrNone);

    // check if file server can be connected

    if (fs.Connect() != KErrNone)

        {

        // file server couldn't be connected, return false

        return KErrNotFound;

        }

    // check if config file name length is > 0

    if (configFile.Length() > 0)

        {

        // open the file with the given path and name

        err = file.Open(fs,configFile,EFileRead);

        // check if file open was succesfull 

        if(err != KErrNone)

            {

            // return false if failed

            fs.Close();

            return err;

            }

        }

    else

        {

        // configFile length 0, return false

        fs.Close();

        return KErrNotFound;

        }

    // return true if tests passed

    file.Close();

    fs.Close();

    return KErrNone;

    }

// --------------------------------------------------------------------------------------------

static TInt ParseCommandAndExecute()

    {

    // commands literals for finding the right keyword 

    _LIT(KAutomatedTestStart,"start*");

    _LIT(KAutomatedTestEnd,"end*");

    _LIT(KAutomatedTestTimed,"timed*");

    TBuf<256> c;

    TInt match(KErrNotFound);

    // copy the full command line with arguments into a buffer

    User::CommandLine(c);

    // try to match with each of the literals defined above

    // (commands in atf format)

    // check if command is "start"

    match = c.Match(KAutomatedTestStart);

    if (match != KErrNotFound)

        {

        LOGTEXT(_L("Found keyword start"));

        TBuf<256> fileName;

        fileName.Append(c.Right(c.Length()-6));

        LOGSTRING2(_L("Filename is %S"), &fileName);

        if(TestSettingsFile(fileName) != KErrNone)

            {

            _LIT(KSettingsFileFailed, "False settings file");

            PrintUsageInfo(KSettingsFileFailed);

            return -2;

            }

        // execute Profile process 

        if( StartProfilerProcess(fileName, 0) == KErrNone )

            {

            return -10;

            }

        return -2;

        }

    // check if command is "end"

    match = c.Match(KAutomatedTestEnd);

    if (match != KErrNotFound)

        {

        LOGTEXT(_L("Found keyword end"));

        // stop the profiling process

        EndProfilerProcess();

        return -10;

        }

    // check if command is "timed"

    match = c.Match(KAutomatedTestTimed);

    if (match != KErrNotFound)

        {

        // command "timed" found, need for finding settings file and run time next

        LOGTEXT(_L("Found keyword timed"));

        TBuf<256> temp;

        temp.Append(c);

        TLex lex(temp);

        TBuf<256> fileName;

        TInt seconds;

        // parse the first command line argument, the command itself

        lex.Mark();

        lex.SkipCharacters();

        if(lex.TokenLength() != 0)

            {

            #ifdef PIPROFILER_PRINTS

            TPtrC token = lex.MarkedToken();

            LOGSTRING2("Token 1 %S",&token);

            #endif

            }

        else

            {

            LOGTEXT(_L("Problem 1 in parsing command line"));

            _LIT(KSettingsFileFailed, "Failure: False argument");

            PrintUsageInfo(KSettingsFileFailed);

            return -2;

            }

        // parse the second command line argument, the settings file name

        lex.SkipSpace();

        lex.Mark();

        lex.SkipCharacters();

        if(lex.TokenLength() != 0)

            {

            TPtrC token2 = lex.MarkedToken();

            LOGSTRING2(_L("Token 2 %S"),&token2);

            fileName.Append(token2);

            LOGSTRING2(_L("Value of fileName is %S"),&fileName);

//            if(TestSettingsFile(fileName) != KErrNone)

//                {

//                _LIT(KSettingsFileFailed, "Failure: False settings file");

//                PrintUsageInfo(KSettingsFileFailed);

//                return -2;

//                }

            }

        else

            {

            LOGTEXT(_L("Problem 2 in parsing command line"));

            _LIT(KSettingsFileFailed, "Failure: No settings file specified");

            PrintUsageInfo(KSettingsFileFailed);

            return -2;

            }

        // parse the third command line argument, the run time in seconds

        lex.SkipSpace();

        lex.Mark();

        lex.SkipCharacters();

        if(lex.TokenLength() != 0)

            {

            // third token ok, try to convert into TInt value

            TPtrC token3 = lex.MarkedToken();

            LOGSTRING2(_L("Token 3 %S"),&token3);

            TLex num(token3);

            TInt err = num.Val(seconds);

            // check if given time value acceptable 

            if (err != KErrNone)

                {

                // value parsing failed, show info note to user

                _LIT(KSecondsFailed, "Failure: False time value");

                PrintUsageInfo(KSecondsFailed);

                return -2;

                }

            }

        else

            {

            LOGTEXT(_L("Problem 3 in parsing command line"));

            _LIT(KSecondsFailed, "Failure: False time value");

            PrintUsageInfo(KSecondsFailed);

            return -2;

            }           

        LOGSTRING3(_L("Filename is %S, seconds is %d"), &fileName, seconds);

        // execute Profile process 

        if( StartProfilerProcess(fileName, seconds) == KErrNone )

            {

            return -10;

            }

        return -2;

        }

    // check if space character in the middle of command line string 

    if( c.LocateReverse(' ') != KErrNotFound)

        {

        _LIT(KWrongParameters, "Failure: Check command line parameters");

        PrintUsageInfo(KWrongParameters);

        return -2;

        }

    // return -1 if no command found

    LOGTEXT(_L("No keyword found"));

    return -1;

    }

// --------------------------------------------------------------------------------------------

GLDEF_C TInt E32Main()

    {

    // parse command line arguments

    ParseCommandAndExecute();

    return KErrNone;

    }