The Package is a service that provides access to a set of
files and folders contained within a Package. One instance of the
Package service exists for each Package file to be manipulated.
Each instance is created with an argument which specifies the URL of
the Package file to which the user requires access. If the instance is
created without arguments, it must be initialised with the
::com::sun::star::lang::XInitialization service methods
before it is a valid instance of the service.
A Package can be initialised with one of the following:
1. A file URL referring to a package.
2. An XInputStream referring to a package (it must also
support an XSeekable interface).
3. An XStream referring to a package. The XInputStream must support
an XSeekable interface, and the XOutputStream must support an
XTruncate interface.
It will throw a css::uno::Exception if initialised with bad data or
if the package has an invalid format (for example, a corrupt central d
irectory record if the file is a ZIP file).
This interface is used to get access to any entry within the package
For example:
getByHierarchicalName ("folder/subfolder/file1.txt");
This will return a PackageStream which refers to the specified stream.
This is also used to get access to a particular folder within the
Package. For example:
getByHierarchicalName ("folder/subfolder/");
This will return a PackageFolder which describes the contents of the specified
folder.
Calls to methods of XHierarchicalNameAccess must NOT have a leading slash.
This interface is used to create new PackageStream or PackageFolder
implementation objects for addition to the Package.
createInstance - creates a new stream implementation object (when first
created, the new object is not part of the Package). It must be added
to the PackageFolder in which it will reside using the methods in the
PackageFolder service.
createInstanceWithArguments - This accepts one boolean value as an
argument. If it set to true, a PackageFolder implementation is created,
if it is set to false, a PackageStream implementation is created.
Creating and inserting a new stream would be done as follows:
1. xNewStream = package->createInstanceWithArguments( false );
2. xDataStream = new MyStreamImpl(). (wherever the data comes from)
3. xNewStream->setInputStream( xDataStream );
4. parentFolder->insertByName( "image.png", xNewStream );
Replacing an existing stream would be very similar, except that the
call ->insertByName would be replaced by ->replaceByName.
This interface is used to commit any changes to the Package. A new
Package file will be written with any new or changed streams/folders and
omitting any PackageStream or PackageFolder that has been removed.
A Package can be initialised with one of the following:
1. A file URL referring to a package.
2. An XInputStream referring to a package (it must also
support an XSeekable interface).
3. An XStream referring to a package. The XInputStream must support
an XSeekable interface, and the XOutputStream must support an
XTruncate interface.
It will throw a css::uno::Exception if initialised with bad data or
if the package has an invalid format (for example, a corrupt central d
irectory record if the file is a ZIP file).
This interface is used to get access to any entry within the package
For example:
getByHierarchicalName ("folder/subfolder/file1.txt");
This will return a PackageStream which refers to the specified stream.
This is also used to get access to a particular folder within the
Package. For example:
getByHierarchicalName ("folder/subfolder/");
This will return a PackageFolder which describes the contents of the specified
folder.
Calls to methods of XHierarchicalNameAccess must NOT have a leading slash.
This interface is used to create new PackageStream or PackageFolder
implementation objects for addition to the Package.
createInstance - creates a new stream implementation object (when first
created, the new object is not part of the Package). It must be added
to the PackageFolder in which it will reside using the methods in the
PackageFolder service.
createInstanceWithArguments - This accepts one boolean value as an
argument. If it set to true, a PackageFolder implementation is created,
if it is set to false, a PackageStream implementation is created.
Creating and inserting a new stream would be done as follows:
1. xNewStream = package->createInstanceWithArguments( false );
2. xDataStream = new MyStreamImpl(). (wherever the data comes from)
3. xNewStream->setInputStream( xDataStream );
4. parentFolder->insertByName( "image.png", xNewStream );
Replacing an existing stream would be very similar, except that the
call ->insertByName would be replaced by ->replaceByName.
This interface is used to commit any changes to the Package. A new
Package file will be written with any new or changed streams/folders and
omitting any PackageStream or PackageFolder that has been removed.
