// Copyright (c) 2005, Rodrigo Braz Monteiro
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
//
//   * Redistributions of source code must retain the above copyright notice,
//     this list of conditions and the following disclaimer.
//   * Redistributions in binary form must reproduce the above copyright notice,
//     this list of conditions and the following disclaimer in the documentation
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// Aegisub Project http://www.aegisub.org/
//
// $Id$

/// @file text_file_reader.h
/// @see text_file_reader.cpp
/// @ingroup utility
///

#pragma once

#include <wx/wxprec.h>
#include <wx/dynarray.h>
#include <wx/string.h>
#include <fstream>
#include <iconv.h>


/// DOCME
/// @class TextFileReader
/// @brief DOCME
///
/// DOCME
class TextFileReader {
private:

	/// DOCME
	wxString encoding;

	/// DOCME
	std::ifstream file;

	/// DOCME
	iconv_t conv;

	/// DOCME
	bool trim;

	/// DOCME
	bool readComplete;


	/// DOCME
	wchar_t outbuf[256];

	/// DOCME
	wchar_t *currout;

	/// DOCME
	wchar_t *outptr;

	/// DOCME
	size_t  outbytesleft;


	/// DOCME
	unsigned int currentLine;

	wchar_t GetWChar();

	TextFileReader(const TextFileReader&);
	TextFileReader& operator=(const TextFileReader&);

public:
	TextFileReader(wxString filename,wxString encoding=_T(""), bool trim=true);
	~TextFileReader();

	wxString ReadLineFromFile();
	bool HasMoreLines();

	static void EnsureValid(const wxString encoding);
	wxString GetCurrentEncoding();
	static wxString GetEncoding(const wxString filename);
};


