/*

* Copyright (c) 2004-2009 Nokia Corporation and/or its subsidiary(-ies).

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of the License "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 <iostream>

#include "options.h"

#include "utility.h"

#include "symbiantypes.h"

#include "utility_interface.h"

void Options::DisplayError (CmdLineException err)

	{

	const char* msg;

	switch (err)

		{

		case ECmdLineUnknownOption:

			msg = "unknown option specified";

			break;

		case ECmdLineMissingSIS:

			msg = "no SIS file specified";

			break;

		case ECmdLineMultipleSIS:

			msg = "too many SIS files specified";

			break;

		case ECmdLineNoDirArgument:

			msg = "No argument supplied with the -d flag";

			break;

		case ECmdLineDirIsFile:

			msg = "Directory specified with the -d flag is a file";

			break;

		case ECmdLineNoPermission:

			msg = "Permission was denied when using directory specified with -d";

			break;

		case ECmdLineOtherDirFailure:

			msg = "Operation failed when accessing directory specified with -d";

			break;

		case ECmdLineInvalidDir:

			msg = "Directory name specified with -d could not be created, invalid name";

			break;

		default:

			msg = "unknown error";

			break;

		}

	std::cerr << CommandName () << ": Error in command: " << msg << std::endl;

	DisplayUsage ();

	}

void Options::DisplayUsage ()

	{

	std::cout << "Usage: " << CommandName () << " [-v] [-h] [-x] [-l[-y]][-d directory] filename.sis" << std::endl;

	std::cout << "Where:\t-i\tdisplays verbose output" << std::endl;

	std::cout << "\t-v\tdisplays version" << std::endl;

	std::cout << "\t-h\tdisplays this message" << std::endl;

	std::cout << "\t-x\textracts the files" << std::endl;

	std::cout << "\t-d\tspecifies where you wish to extract the files to" << std::endl; 

	std::cout << "\t-p\tpauses when finishing" << std::endl;

	std::cout << "\t-l\tlist the executable against their capablities. " << std::endl;

	std::cout << "\t\tAlso verifies capablities with executable header" << std::endl;

	std::cout << "\t-y\tlist the executable against their capablities, " << std::endl;

	std::cout << "\t\tin the format supported by DumpInstallFileStatus" << std::endl;

	std::cout << "\t\tThis option has to be given along with -l option" << std::endl;

	}

/**

*This is a new function added to provide version information

*/

void Options::DisplayVersion()

{

	std::cout << "\nDUMPSIS  Version  " << MajorVersion << '.' << MinorVersion << std::endl;

	std::cout << "A utility for decompiling Software Installation (SIS) files" << std::endl;

	std::cout <<"Copyright (c) Symbian Software Limited 2004-2008. All rights reserved.\n\n" << std::flush;

}

Options::Options (int argc, wchar_t** argv)

	: iVerboseFlag (false),

	iVersion (false),

	iHelpFlag (false),

	iExtractFilesFlag (false),

	iPauseOnExit (false),

	iList(false),

	iCreateECI(false)

	{

	while (--argc)

		{

		argv++;

		if ((**argv == '-') || (**argv == '/'))

			{

			const wchar_t* optPtr = *argv;

			while (*++optPtr)

				{

				switch (*optPtr)

					{

					case 'd':

					case 'D':

						if (argc > 1)

							{

							argc--;

							iExtractDirectory = *(++argv);

							}

						else

							{

							throw ECmdLineNoDirArgument;

							}

						break;

					case 'h':

					case 'H':

					case '?':

						iHelpFlag = true;

						break;

					case 'v':

					case 'V':

						iVersion = true;

						break;

					case 'p':

					case 'P':

						iPauseOnExit = true;

						break;

					case 'i':

					case 'I':

						iVerboseFlag = true;

						break;

					case 'x':

					case 'X':

						iExtractFilesFlag = true;

						break;

					case 'l':

					case 'L':

						iList = true;

						break;

					case 'y':

					case 'Y':

						iCreateECI = true;

						break;

					default:

						throw ECmdLineUnknownOption;

					}

				}

			}

		else

			{

			if (iSISFileName != L"")

				{

				throw ECmdLineMultipleSIS;

				}

			else

				{

				iSISFileName = *argv;

				}

			}

		}

	if (iHelpFlag)

		{

		DisplayUsage ();

		if (iSISFileName == L"")	// If we were asked for help then we shouldn't

			{				// complain that there's no SIS file specified,

			exit (0);		// just exit quietly.

			}

		}

	if (iVersion)

		{

		DisplayVersion ();

		if (iSISFileName == L"")

			{

			exit (0);		

			}

		}

	if (iSISFileName == L"")

		{

		throw ECmdLineMissingSIS;	

		}

	// Sanity check the directory argument

	// If directory name is not provided then

	// generate a directory name.

	GetExtractDir();

	}

void Options::GetExtractDir()

	{

	iExtractDirectory = FixPathDelimiters(iExtractDirectory);

	if(iExtractDirectory != L"")

		{

		return;

		}

	int pos = iSISFileName.rfind(L".sis");

	if(std::wstring::npos == pos)

		{

		pos = iSISFileName.rfind(L".ctl");

		}

	if(std::wstring::npos == pos)

		{

		iExtractDirectory = L".";

		}

	else

		{

		iExtractDirectory = FixPathDelimiters(iSISFileName);

		pos = iExtractDirectory.find_last_of(L"/");

		if (std::wstring::npos == pos)

			{

			pos = 0;

			}

		else

			{

			pos += 1; // Discard "/"

			}

		// Discard the extension

		int dirLength = iExtractDirectory.length() - 4 - pos;

		iExtractDirectory = iExtractDirectory.substr(pos, dirLength);

		}

	}