Dpkg::Index.3perl - Man Page

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

$index = Dpkg::Index->new(%opts)

Creates a new empty index. See set_options() for more details.

$index->set_options(%opts)

Change the value of some options.

Options:

type

Set the deb822 control type, used to setup default values for other options.

item_opts

Set a hash reference that will be passed to the item constructor in the $index->new_item() method. The index can only contain one item with a given key.

unique_tuple_key

Set a boolean requesting whether the default key should be the unique tuple (default to true).

get_key_func

Set a function returning a key for the item passed in parameters.

The default depends on the type:

• for CTRL_TMPL_SRC, it is the Source field;
• for CTRL_REPO_SRC and CTRL_DSC it is the Package and Version fields (concatenated with "_") when unique_tuple_key is true (the default), or otherwise the Package field;
• for CTRL_TMPL_PKG it is simply the Package field;
• for CTRL_REPO_PKG and CTRL_DEB it is the Package, Version and Architecture fields (concatenated with "_") when unique_tuple_key is true (the default) or otherwise the Package field;
• for CTRL_CHANGELOG it is the Source and the Version fields (concatenated with an intermediary "_");
• for CTRL_TESTS is an integer index (0-based) corresponding to the Tests or Test-Command field stanza;
• for CTRL_FILE_CHANGES it is the Source, Version and Architecture fields (concatenated with "_");
• for CTRL_FILE_VENDOR it is the Vendor field;
• for CTRL_FILE_STATUS it is the Package and Architecture fields (concatenated with "_");
• otherwise it is the Package field by default.

$index->get_type()

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).

$index->parse($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.

$index->load($file)

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

$index->remove_by_key($key)

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. It's your responsibility to ensure that they have been computed with the same function.

Options:

keep_keys

Set whether to re-compute the keys from the other index. Defaults to 1.

$index->sort(\&sortfunc)

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 keys.

$str = $index->output([$fh])

"$index"

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 if $fh has been passed.

$index->save($file)

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