File: FileNameBuilder.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 "FileNameBuilder.h"

#include <stdio.h>
#include <stdlib.h>

#include <unac.h>

#include "ErrorLog.h"

CFileNameBuilder::CFileNameBuilder(const tTagMap& Tags, const std::string& BasePath, const std::string& SingleDiskFileName, const std::string& MultiDiskFileName)
:	m_Tags(Tags),
	m_BasePath(BasePath),
	m_SingleDiskFileName(SingleDiskFileName),
	m_MultiDiskFileName(MultiDiskFileName),
	m_Extension("flac")
{
	BuildPath();
}

CFileNameBuilder::CFileNameBuilder(const tTagMap& Tags, const std::string& BasePath, const std::string& SingleDiskFileName, const std::string& MultiDiskFileName, const std::string& Extension)
:       m_Tags(Tags),
        m_BasePath(BasePath),
        m_SingleDiskFileName(SingleDiskFileName),
        m_MultiDiskFileName(MultiDiskFileName),
        m_Extension(Extension)
{
        BuildPath();
}


std::string CFileNameBuilder::FileName() const
{
	return m_FileName;
}

void CFileNameBuilder::BuildPath()
{
	std::string Template;

	if (m_Tags[CTagName("DISCNUMBER")].empty())
		Template=m_SingleDiskFileName;
	else
		Template=m_MultiDiskFileName;

	m_FileName=m_BasePath;
	if (m_FileName[m_FileName.length()-1]!='/')
		m_FileName+="/";

	m_FileName+=Template;

	ReplaceStringFromTag("%A","ARTIST",false);
	ReplaceStringFromTag("%S","ARTISTSORT",false);
	ReplaceStringFromTag("%T","ALBUM",false);
	ReplaceStringFromTag("%D","DISCNUMBER",false);
	ReplaceStringFromTag("%Y","YEAR",false);
	ReplaceStringFromTag("%G","GENRE",false);
	ReplaceStringFromTag("%1","ARTISTSORT",true);

	ReplaceString("%E",m_Extension);
}

void CFileNameBuilder::ReplaceStringFromTag(const std::string& Search, const std::string& ReplaceTag, bool FirstOnly)
{
	std::string Replace="NO"+ReplaceTag;

	tTagMapConstIterator ThisTag=m_Tags.find(CTagName(ReplaceTag));
	if (m_Tags.end()!=ThisTag)
	{
		CUTF8Tag Value=(*ThisTag).second;
		if (!Value.empty())
			Replace=FixString(Value.UTF8Value());
	}

	if (FirstOnly)
	{
		bool Found=false;

		for (std::string::size_type count=0;count<Replace.length();count++)
		{
			if (isalnum(Replace[count]))
			{
				Replace=std::toupper(Replace[count]);
				Found=true;
				break;
			}
		}

		if (!Found)
			Replace="extended";
	}
	ReplaceString(Search, Replace);
}

void CFileNameBuilder::ReplaceString(const std::string& Search, const std::string& Replace)
{
	std::string::size_type SearchPos=m_FileName.find(Search);
	while(std::string::npos!=SearchPos)
	{
		m_FileName=m_FileName.substr(0,SearchPos)+Replace+m_FileName.substr(SearchPos+Search.length());
		SearchPos=m_FileName.find(Search);
	}
}

std::string CFileNameBuilder::FixString(const std::string& String) const
{
	char *out=0;
	size_t out_length=0;
	std::string Fixed=String;

	if (0==unac_string("UTF-8",String.c_str(),String.length(),&out,&out_length))
		Fixed=out;
	else
		perror("unac_string");

	if (out)
		free(out);

	std::string BadChars="/:\"'`;?&,.!";

	for (std::string::size_type count=0;count<Fixed.length();count++)
	{
		if (BadChars.find(Fixed[count])!=std::string::npos)
			Fixed.replace(count,1,"-");
	}

	return Fixed;
}