177 lines
5.4 KiB
C++
177 lines
5.4 KiB
C++
/***************************************************************************
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copyright : (C) 2002 - 2008 by Scott Wheeler
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email : wheeler@kde.org
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***************************************************************************/
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/***************************************************************************
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* This library is free software; you can redistribute it and/or modify *
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* it under the terms of the GNU Lesser General Public License version *
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* 2.1 as published by the Free Software Foundation. *
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* *
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* This library is distributed in the hope that it will be useful, but *
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* WITHOUT ANY WARRANTY; without even the implied warranty of *
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU *
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* Lesser General Public License for more details. *
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* *
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* You should have received a copy of the GNU Lesser General Public *
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* License along with this library; if not, write to the Free Software *
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA *
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* 02110-1301 USA *
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* *
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* Alternatively, this file is available under the Mozilla Public *
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* License Version 1.1. You may obtain a copy of the License at *
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* http://www.mozilla.org/MPL/ *
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***************************************************************************/
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#ifndef TAGLIB_COMMENTSFRAME_H
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#define TAGLIB_COMMENTSFRAME_H
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#include "id3v2frame.h"
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#include "taglib_export.h"
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namespace Strawberry_TagLib {
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namespace TagLib {
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namespace ID3v2 {
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//! An implementation of ID3v2 comments
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/*!
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* This implements the ID3v2 comment format. An ID3v2 comment consists of
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* a language encoding, a description and a single text field.
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*/
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class TAGLIB_EXPORT CommentsFrame : public Frame {
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friend class FrameFactory;
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public:
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/*!
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* Construct an empty comment frame that will use the text encoding \a encoding.
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*/
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explicit CommentsFrame(String::Type encoding = String::Latin1);
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/*!
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* Construct a comment based on the data in \a data.
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*/
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explicit CommentsFrame(const ByteVector &data);
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/*!
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* Destroys this CommentFrame instance.
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*/
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~CommentsFrame() override;
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/*!
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* Returns the text of this comment.
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*
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* \see text()
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*/
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String toString() const override;
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/*!
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* Returns the language encoding as a 3 byte encoding as specified by
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* <a href="http://en.wikipedia.org/wiki/ISO_639">ISO-639-2</a>.
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*
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* \note Most taggers simply ignore this value.
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*
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* \see setLanguage()
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*/
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ByteVector language() const;
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/*!
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* Returns the description of this comment.
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*
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* \note Most taggers simply ignore this value.
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*
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* \see setDescription()
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*/
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String description() const;
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/*!
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* Returns the text of this comment.
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*
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* \see setText()
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*/
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String text() const;
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/*!
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* Set the language using the 3 byte language code from
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* <a href="http://en.wikipedia.org/wiki/ISO_639">ISO-639-2</a> to \a languageCode.
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*
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* \see language()
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*/
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void setLanguage(const ByteVector &languageEncoding);
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/*!
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* Sets the description of the comment to \a s.
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*
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* \see description()
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*/
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void setDescription(const String &s);
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/*!
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* Sets the text portion of the comment to \a s.
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*
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* \see text()
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*/
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void setText(const String &s) override;
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/*!
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* Returns the text encoding that will be used in rendering this frame.
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* This defaults to the type that was either specified in the constructor or read from the frame when parsed.
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*
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* \see setTextEncoding()
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* \see render()
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*/
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String::Type textEncoding() const;
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/*!
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* Sets the text encoding to be used when rendering this frame to \a encoding.
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*
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* \see textEncoding()
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* \see render()
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*/
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void setTextEncoding(String::Type encoding);
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/*!
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* Parses this frame as PropertyMap with a single key.
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* - if description() is empty or "COMMENT", the key will be "COMMENT"
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* - if description() is not a valid PropertyMap key, the frame will be
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* marked unsupported by an entry "COMM/<description>" in the unsupportedData()
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* attribute of the returned map.
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* - otherwise, the key will be "COMMENT:<description>"
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* - The single value will be the frame's text().
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*/
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PropertyMap asProperties() const override;
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/*!
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* Comments each have a unique description.
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* This searches for a comment frame with the description \a d and returns a pointer to it.
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* If no frame is found that matches the given description null is returned.
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*
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* \see description()
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*/
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static CommentsFrame *findByDescription(const Tag *tag, const String &d);
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protected:
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// Reimplementations.
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void parseFields(const ByteVector &data) override;
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ByteVector renderFields() const override;
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private:
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/*!
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* The constructor used by the FrameFactory.
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*/
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explicit CommentsFrame(const ByteVector &data, Header *h);
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CommentsFrame(const CommentsFrame &);
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CommentsFrame &operator=(const CommentsFrame &);
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class CommentsFramePrivate;
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CommentsFramePrivate *d;
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};
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} // namespace ID3v2
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} // namespace TagLib
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} // namespace Strawberry_TagLib
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#endif
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