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Dpkg::Index(3)			 libdpkg-perl			Dpkg::Index(3)

       Dpkg::Index - generic index of control information

       This object represent a set of Dpkg::Control objects.

       $index =	Dpkg::Index->new(%opts)
	   Creates a new empty index. See set_options()	for more details.

	   The "type" option is	checked	first to define	default	values for
	   other options. Here are the relevant	options: "get_key_func"	is a
	   function returning a	key for	the item passed	in parameters. The
	   index can only contain one item with	a given	key. The function used
	   depends on the type:	for CTRL_INFO_PKG, CTRL_INDEX_SRC,
	   CTRL_INDEX_PKG and CTRL_PKG_DEB it's	simply the Package field; for
	   CTRL_PKG_SRC	and CTRL_INFO_SRC, it's	the Source field; for
	   CTRL_CHANGELOG it's the Source and the Version fields (concatenated
	   with	an intermediary	"_"); for CTRL_TESTS is	either the Tests or
	   Test-Command	fields;	for CTRL_FILE_CHANGES it's the Source, Version
	   and Architecture fields (concatenated with "_"); for
	   CTRL_FILE_VENDOR it's the Vendor field; for CTRL_FILE_STATUS	it's
	   the Package and Architecture	fields (concatenated with "_").
	   Otherwise it's the Package field by default.

	   Returns the type of control information stored. See the type
	   parameter set during	new().

       $index->add($item, [$key])
	   Add a new item in the index.	If the $key parameter is omitted, the
	   key will be generated with the get_key_func function	(see
	   set_options() for details).

	   Reads the file and creates all items	parsed.	Returns	the number of
	   items parsed. Handles compressed files transparently	based on their

       $index->parse($fh, $desc)
	   Reads the filehandle	and creates all	items parsed. When called
	   multiple times, the parsed stanzas are accumulated.

	   Returns the number of items parsed.

	   Writes the content of the index in a	file. Auto-compresses files
	   based on their extensions.

       $item = $index->new_item()
	   Creates a new item. Mainly useful for derived objects that would
	   want	to override this method	to return something else than a
	   Dpkg::Control object.

       $item = $index->get_by_key($key)
	   Returns the item identified by $key or undef.

       @keys = $index->get_keys(%criteria)
	   Returns the keys of items that matches all the criteria. The	key of
	   the %criteria hash is a field name and the value is either a	regex
	   that	needs to match the field value,	or a reference to a function
	   that	must return true and that receives the field value as single
	   parameter, or a scalar that must be equal to	the field value.

       @items =	$index->get(%criteria)
	   Returns all the items that matches all the criteria.

	   Remove the item identified by the given key.

       @items =	$index->remove(%criteria)
	   Returns and removes all the items that matches all the criteria.

       $index->merge($other_index, %opts)
	   Merge the entries of	the other index. While merging,	the keys of
	   the merged index are	used, they are not re-computed (unless you
	   have	set the	options	"keep_keys" to "0"). It's your responsibility
	   to ensure that they have been computed with the same	function.

	   Sort	the index with the given sort function.	If no function is
	   given, an alphabetic	sort is	done based on the keys.	The sort
	   function receives the items themselves as parameters	and not	the

       $str = $index->output()
	   Get a string	representation of the index. The Dpkg::Control objects
	   are output in the order which they have been	read or	added except
	   if the order	have been changed with sort().

	   Print the string representation of the index	to a filehandle.

   Version 1.00	(dpkg 1.15.6)
       Mark the	module as public.

1.18.24				  2017-05-17			Dpkg::Index(3)


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