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112 lines
3.3 KiB
112 lines
3.3 KiB
15 years ago
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/*
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* Copyright (c) 2003, 2004 Michael Pyne <michael.pyne@kdemail.net>
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*
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* This software is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This software is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public
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* License along with this library; see the file COPYING.
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* If not, write to the Free Software Foundation, Inc.,
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* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#ifndef _BINT_H
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#define _BINT_H
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#include <qcstring.h>
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#include "bbase.h"
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#include "bytetape.h"
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/**
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* Class to represent a b-encoded integer.
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*
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* @author Michael Pyne <mpyne@grammarian.homelinux.net>
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* @see BBase
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*/
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class BInt : public BBase
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{
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public:
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/**
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* Constructs a BInt by reading a b-encoded integer from @p dict.
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* You can start reading from a position other than the beginning
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* by passing that position to the constructor.
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*
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* @param dict the buffer to read from
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* @param start the position within the buffer of the beginning
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* of the b-encoded integer.
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*/
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BInt (QByteArray &dict, int start = 0);
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/**
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* Constructs a BInt by reading a b-encoded integer from @p tape.
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*
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* @param tape the ByteTape to read from. It should already be
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* positioned at the beginning of the b-encoded integer data.
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* After construction, @p tape will point to the byte after
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* the b-encoded integer on success. If construction was
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* not successful, @p tape will have an undefined position.
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*/
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BInt (ByteTape &tape);
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/**
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* Destructor for this class. No special action is taken.
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*/
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virtual ~BInt ();
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/**
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* Returns the integer value of the data used to construct this
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* object.
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*
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* @return this object's integer value
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*/
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Q_LLONG get_value () const { return m_value; }
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/**
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* Returns the type of this class.
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*
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* @return bInt. This value is only returned by this class.
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*/
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virtual classID type_id() const { return bInt; }
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/**
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* This function should be called to determine whether the
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* integer was successfully created, since no exceptions
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* are thrown.
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*
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* @return true if this is a valid integer, false otherwise
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*/
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virtual bool isValid() const { return m_valid; }
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/**
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* Outputs the b-encoded representation of the object to the given
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* QIODevice.
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* @param device the QIODevice to write to
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* @return true on a successful write, false otherwise
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*/
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virtual bool writeToDevice (QIODevice &device);
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private:
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/**
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* Initialization function for the class, called to handle the
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* actual work of reading the b-encoded data from @p tape.
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*
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* @param tape the ByteTape to read from
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*/
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void init(ByteTape &tape);
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Q_LLONG m_value;
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bool m_valid;
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};
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#endif /* _BINT_H */
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// vim: set et ts=4 sw=4:
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