| TagLib 1.13 |  |

Public Types | Public Member Functions | List of all members
TagLib::PropertyMap Class Reference

A map for format-independent <key,valuelist> tag representations. More...

`#include <tpropertymap.h>`

Inheritance diagram for TagLib::PropertyMap:
[legend]
Collaboration diagram for TagLib::PropertyMap:
[legend]

## Public Types
typedef SimplePropertyMap::Iterator | Iterator
typedef SimplePropertyMap::ConstIterator | ConstIterator

## Public Member Functions
| PropertyMap ()
| PropertyMap (const PropertyMap &m)
| PropertyMap (const SimplePropertyMap &m)
virtual | ~PropertyMap ()
bool | insert (const String &key, const StringList &values)
bool | replace (const String &key, const StringList &values)
Iterator | find (const String &key)
ConstIterator | find (const String &key) const
bool | contains (const String &key) const
bool | contains (const PropertyMap &other) const
PropertyMap & | erase (const String &key)
PropertyMap & | erase (const PropertyMap &other)
PropertyMap & | merge (const PropertyMap &other)
const StringList | value (const String &key, const StringList &defaultValue=StringList()) const
const StringList & | operator[] (const String &key) const
StringList & | operator[] (const String &key)
bool | operator== (const PropertyMap &other) const
bool | operator!= (const PropertyMap &other) const
StringList & | unsupportedData ()
const StringList & | unsupportedData () const
void | removeEmpty ()
String | toString () const
Public Member Functions inherited from TagLib::Map< Key, T >
| Map ()
| Map (const Map< Key, T > &m)
virtual | ~Map ()
Iterator | begin ()
ConstIterator | begin () const
Iterator | end ()
ConstIterator | end () const
Map< Key, T > & | insert (const Key &key, const T &value)
Map< Key, T > & | clear ()
unsigned int | size () const
bool | isEmpty () const
Iterator | find (const Key &key)
ConstIterator | find (const Key &key) const
bool | contains (const Key &key) const
Map< Key, T > & | erase (Iterator it)
Map< Key, T > & | erase (const Key &key)
const T | value (const Key &key, const T &defaultValue=T()) const
const T & | operator[] (const Key &key) const
T & | operator[] (const Key &key)
Map< Key, T > & | operator= (const Map< Key, T > &m)
void | swap (Map< Key, T > &m)

## Additional Inherited Members
Protected Member Functions inherited from TagLib::Map< Key, T >
void | detach ()

## Detailed Description

A map for format-independent <key,valuelist> tag representations.

This map implements a generic representation of textual audio metadata ("tags") realized as pairs of a case-insensitive key and a nonempty list of corresponding values, each value being an arbitrary unicode String.

Note that most metadata formats pose additional conditions on the tag keys. The most popular ones (Vorbis, APE, ID3v2) should support all ASCII only words of length between 2 and 16.

This class can contain any tags, but here is a list of "well-known" tags that you might want to use:

Basic tags:

- TITLE
- ALBUM
- ARTIST
- ALBUMARTIST
- SUBTITLE
- TRACKNUMBER
- DISCNUMBER
- DATE
- ORIGINALDATE
- GENRE
- COMMENT

Sort names:

- TITLESORT
- ALBUMSORT
- ARTISTSORT
- ALBUMARTISTSORT
- COMPOSERSORT

Credits:

- COMPOSER
- LYRICIST
- CONDUCTOR
- REMIXER
- PERFORMER:<XXXX>

Other tags:

- ISRC
- ASIN
- BPM
- COPYRIGHT
- ENCODEDBY
- MOOD
- COMMENT
- MEDIA
- LABEL
- CATALOGNUMBER
- BARCODE
- RELEASECOUNTRY
- RELEASESTATUS
- RELEASETYPE

MusicBrainz identifiers:

- MUSICBRAINZ_TRACKID
- MUSICBRAINZ_ALBUMID
- MUSICBRAINZ_RELEASEGROUPID
- MUSICBRAINZ_RELEASETRACKID
- MUSICBRAINZ_WORKID
- MUSICBRAINZ_ARTISTID
- MUSICBRAINZ_ALBUMARTISTID
- ACOUSTID_ID
- ACOUSTID_FINGERPRINT
- MUSICIP_PUID

## Member Typedef Documentation

## ◆ ConstIterator

typedef SimplePropertyMap::ConstIterator TagLib::PropertyMap::ConstIterator

## ◆ Iterator

typedef SimplePropertyMap::Iterator TagLib::PropertyMap::Iterator

## Constructor & Destructor Documentation

## ◆ PropertyMap() [1/3]

TagLib::PropertyMap::PropertyMap | ( |  | ) |

## ◆ PropertyMap() [2/3]

TagLib::PropertyMap::PropertyMap | ( | const PropertyMap & | m | ) |

## ◆ PropertyMap() [3/3]

TagLib::PropertyMap::PropertyMap | ( | const SimplePropertyMap & | m | ) |

Creates a PropertyMap initialized from a SimplePropertyMap. Copies all entries from m that have valid keys. Invalid keys will be appended to the unsupportedData() list.

## ◆ ~PropertyMap()

virtual TagLib::PropertyMap::~PropertyMap | ( |  | ) |
| virtual

## Member Function Documentation

## ◆ contains() [1/2]

bool TagLib::PropertyMap::contains | ( | const PropertyMap & | other | ) | const

Returns true if this map contains all keys of other and the values coincide for that keys. Does not take the unsupportedData list into account.

## ◆ contains() [2/2]

bool TagLib::PropertyMap::contains | ( | const String & | key | ) | const

Returns true if the map contains values for key.

## ◆ erase() [1/2]

PropertyMap & TagLib::PropertyMap::erase | ( | const PropertyMap & | other | ) |

Erases from this map all keys that appear in other.

## ◆ erase() [2/2]

PropertyMap & TagLib::PropertyMap::erase | ( | const String & | key | ) |

Erase the key and its values from the map.

## ◆ find() [1/2]

Iterator TagLib::PropertyMap::find | ( | const String & | key | ) |

Find the first occurrence of key.

## ◆ find() [2/2]

ConstIterator TagLib::PropertyMap::find | ( | const String & | key | ) | const

Find the first occurrence of key.

## ◆ insert()

bool TagLib::PropertyMap::insert | ( | const String & | key,
|  | const StringList & | values
| ) |  |

Inserts values under key in the map. If key already exists, then values will be appended to the existing StringList. The returned value indicates success, i.e. whether key is a valid key.

## ◆ merge()

PropertyMap & TagLib::PropertyMap::merge | ( | const PropertyMap & | other | ) |

Merge the contents of other into this PropertyMap. If a key is contained in both maps, the values of the second are appended to that of the first. The unsupportedData() lists are concatenated as well.

## ◆ operator!=()

bool TagLib::PropertyMap::operator!= | ( | const PropertyMap & | other | ) | const

Returns false if and only other has the same contents as this map.

## ◆ operator==()

bool TagLib::PropertyMap::operator== | ( | const PropertyMap & | other | ) | const

Returns true if and only if other has the same contents as this map.

## ◆ operator[]() [1/2]

StringList & TagLib::PropertyMap::operator[] | ( | const String & | key | ) |

Returns a reference to the value associated with key.

Note
  : If key is not contained in the map, an empty StringList is returned. You can also directly add entries by using this function as an lvalue.

## ◆ operator[]() [2/2]

const StringList & TagLib::PropertyMap::operator[] | ( | const String & | key | ) | const

Returns a reference to the value associated with key.

Note
  : If key is not contained in the map, an empty StringList is returned without error.

## ◆ removeEmpty()

void TagLib::PropertyMap::removeEmpty | ( |  | ) |

Removes all entries which have an empty value list.

## ◆ replace()

bool TagLib::PropertyMap::replace | ( | const String & | key,
|  | const StringList & | values
| ) |  |

Replaces any existing values for key with the given values, and simply insert them if key did not exist before. The returned value indicates success, i.e. whether key is a valid key.

## ◆ toString()

String TagLib::PropertyMap::toString | ( |  | ) | const

## ◆ unsupportedData() [1/2]

StringList & TagLib::PropertyMap::unsupportedData | ( |  | ) |

If a PropertyMap is read from a File object using File::properties(), the StringList returned from this function will represent metadata that could not be parsed into the PropertyMap representation. This could be e.g. binary data, unknown ID3 frames, etc. You can remove items from the returned list, which tells TagLib to remove those unsupported elements if you call File::setProperties() with the same PropertyMap as argument.

## ◆ unsupportedData() [2/2]

const StringList & TagLib::PropertyMap::unsupportedData | ( |  | ) | const

## ◆ value()

const StringList TagLib::PropertyMap::value | ( | const String & | key,
|  | const StringList & | defaultValue = `StringList()`
| ) |  | const

Returns the value associated with key.

If the map does not contain key, it returns defaultValue. If no defaultValue is specified, it returns an empty string list.

The documentation for this class was generated from the following file:

- tpropertymap.h