File: CommandLine.cc

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/* --------------------------------------------------------------------------

   flactag -- A tagger for single album FLAC files with embedded CUE sheets
   						using data retrieved from the MusicBrainz service

   Copyright (C) 2006-2012 Andrew Hawkins
   Copyright (C) 2011-2012 Daniel Pocock

   This file is part of flactag.

   This program is free software: you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
	 the Free Software Foundation, either version 3 of the License, or
	 (at your option) any later version.

   Flactag is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   Lesser General Public License for more details.

   You should have received a copy of the GNU General Public
   License along with this library; if not, write to the Free Software
   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

     $Id$

----------------------------------------------------------------------------*/

#include "CommandLine.h"

#include <sstream>

#include <stdio.h>
#include <getopt.h>

#include "ErrorLog.h"

CCommandLine::CCommandLine(int argc, char *const argv[])
:	m_Valid(true),
	m_Check(false),
	m_Write(false),
	m_Rename(false),
	m_Version(false),
	m_DiscID(false),
	m_ForceWrite(false),
	m_SubmitURL(false),
	m_OverwriteExisting(false),
	m_OverrideDiscID("")
{
	struct option LongOptions[] =
	{
		{"force-write", no_argument, 0, 'f'},
		{"discid", no_argument, 0, 'd'},
		{"version", no_argument, 0, 'v'},
		{"rename", no_argument, 0, 'r'},
		{"write", no_argument, 0, 'w'},
		{"check", no_argument, 0, 'c'},
		{"submit-url", no_argument, 0, 's'},
		{"overwrite-existing", no_argument, 0, 'o'},
		{"override-discid", required_argument, 0, 'O'},
		{0, 0, 0, 0}
	};

	int OptionIndex=0;
	int Ret;

	opterr=1;

	do
	{
		Ret=getopt_long(argc,argv,"fdvrwcsoO:",LongOptions,&OptionIndex);
		switch (Ret)
		{
			case 's':
				m_SubmitURL=true;
				break;

			case 'f':
				m_ForceWrite=true;
				break;

			case 'd':
				m_DiscID=true;
				break;

			case 'v':
				m_Version=true;
				break;

			case 'r':
				m_Rename=true;
				break;

			case 'w':
				m_Write=true;
				break;

			case 'c':
				m_Check=true;
				break;

			case 'o':
				m_OverwriteExisting=true;
				break;

			case 'O':
				m_OverrideDiscID.assign(optarg);
				break;

			case -1:
				//Reached end of options
				break;

			default:
				m_Valid=false;
				break;
		}
	} while (m_Valid && -1!=Ret);

	if (m_Valid)
	{
		int LastArg=optind;

		while (LastArg!=argc)
		{
			m_FileNames.push_back(argv[LastArg]);
			LastArg++;
		}
	}

	if (m_FileNames.empty() && !m_Version)
		m_Valid=false;
	else if ((m_FileNames.size() > 1) && (m_OverrideDiscID.size() > 0))
		m_Valid=false;
	else if ((m_DiscID || m_SubmitURL) && (m_Check || m_Write || m_Rename || m_ForceWrite))
		m_Valid=false;
	else if (m_ForceWrite && !m_Write)
		m_Valid=false;

	if (!m_Valid)
		Usage(argv[0]);
}

bool CCommandLine::Valid() const
{
	return m_Valid;
}

bool CCommandLine::Check() const
{
	return m_Check;
}

bool CCommandLine::Write() const
{
	return m_Write;
}

bool CCommandLine::Rename() const
{
	return m_Rename;
}

bool CCommandLine::Version() const
{
	return m_Version;
}

bool CCommandLine::DiscID() const
{
	return m_DiscID;
}

bool CCommandLine::ForceWrite() const
{
	return m_ForceWrite;
}

bool CCommandLine::SubmitURL() const
{
	return m_SubmitURL;
}

bool CCommandLine::OverwriteExisting() const
{
	return m_OverwriteExisting;
}

bool CCommandLine::OverrideDiscID() const
{
        return m_OverrideDiscID.size() > 0;
}

std::string CCommandLine::OverrideDiscID_val() const
{
	return m_OverrideDiscID;
}

std::vector<std::string> CCommandLine::FileNames() const
{
	return m_FileNames;
}

void CCommandLine::Usage(const std::string& ProgName) const
{
	printf("Usage: %s [ --version | -v ] [ --submit-url | -s ] [ --discid | -d]\n"
					"\t\t[ --check | -c ] [ --write | -w ] [ --force-write | -f ]\n"
					"\t\t[ --rename | -r ] [ --overwrite-existing | -o ]\n"
					"\t\t[ --override-discid discid ]\n"
					"\t\tflacfile [ flacfile ] [ flacfile ]\n",ProgName.c_str());
}