Cupt::Cache(3) store info about available packages

FLAGS

o_memoize

This flag determines whether it worth trade space for time in time-consuming functions. On by default. By now, it affects ``get_satisfying_versions'' method. If it's on, it stores references, so don't modify results of these functions, use them in read-only mode. It it's on, these functions are not thread-safe.

METHODS

new

creates a new Cupt::Cache object

Parameters:

config - reference to Cupt::Config

Next params are treated as hash-style param list:

'-source': read Sources

'-binary': read Packages

'-installed': read dpkg status file

'-allow-reinstall': list of globs of package names which are allowed to reinstall

Example: 

  my $cache = new Cupt::Cache($config, '-source' => 0, '-binary' => 1);

set_config

method, sets new Cupt::Config for the cache

Parameters:

config - reference to Cupt::Config

get_binary_package_names

method, returns an array of binary package names

get_source_package_names

method, returns an array of source package names

get_system_state

method, returns reference to Cupt::System::State

get_extended_info

method, returns info about extended package statuses in format: 

  {
    'automatically_installed' => { I<package_name> => 1 },
  }

is_automatically_installed

method, returns boolean value - is the package automatically installed or not

Parameters:

package_name - package name

get_original_apt_pin

method, returns pin value for the supplied version as described in apt_preferences(5)

Parameters:

version - reference to Cupt::Cache::BinaryVersion

get_pin

method, returns Cupt pin value for the supplied version

Parameters:

version - reference to Cupt::Cache::BinaryVersion

get_binary_package

method, returns reference to appropriate Cupt::Cache::Package for package name. Returns undef if there is no such package in cache.

Parameters:

package_name - package name to find

get_source_package

method, returns reference to appropriate Cupt::Cache::Package for package name. Returns undef if there is no such package in cache.

Parameters:

package_name - package name to find

get_sorted_pinned_versions

method to get sorted by ``candidatness'' versions in descending order

Parameters:

package - reference to Cupt::Cache::Package

Returns: [ { 'version' => version, 'pin' => pin }... ]

where:

version - reference to Cupt::Cache::BinaryVersion

pin - pin value

get_policy_version

method, returns reference to Cupt::Cache::BinaryVersion, this is the version of package, which to be installed by cupt policy; or undef if there is no valid versions for this package

Parameters:

package - reference to Cupt::Cache::Package, package to select versions from

get_satisfying_versions

method, returns reference to array of Cupt::Cache::BinaryVersion that satisfy relation, if no version can satisfy the relation, returns an empty array

Parameters:

relation_expression - see Relation expression in Cupt::Cache::Relation

get_index_entries

method, returns reference to list of ``index_entry'''s

get_path_of_index_list

method, returns path of Packages/Sources file for index_entry

Parameters:

``index_entry''

get_download_entries_of_index_list

method, returns the download entries of Packages/Sources file for index_entry

Parameters:

``index_entry''

path to accompanying Release file

Returns:

[ download_entry... ]

where

download_entry is 

  {
    'uri' => {
               'size' => file size
               'md5sum' => MD5 hash sum
               'sha1sum' => SHA1 hash sum
               'sha256sum' => SHA256 hash sum
             }
  }

get_path_of_release_list

method, returns path of Release file for index_entry

Parameters:

``index_entry''

get_download_uri_of_release_list

method, returns the remote URI of Release file for index_entry

Parameters:

``index_entry''

get_download_entries_of_localized_descriptions

method, returns the remote URIs and corresponding download places of possible Translation files for index_entry

Parameters:

``index_entry''

Returns:

[ [ download URI, local path to place ]... ]

get_path_of_extended_states

returns path of file containing extended states for packages

get_binary_release_data

method, returns reference to array of available releases of binary packages in form [ ``release_info'' ... ]

get_source_release_data

method, returns reference to array of available releases of source packages in form [ ``release_info'' ... ]

FREE SUBROUTINES

verify_signature

Checks signature of supplied file via GPG.

Parameters:

config - reference to Cupt::Config

file - path to file

Returns:

non-zero on success, zero on fail

verify_hash_sums

verifies MD5, SHA1 and SHA256 hash sums of file

Parameters:

hash sums - { 'md5sum' => $md5sum, 'sha1sum' => $sha1sum', 'sha256sum' => $sha256sum }

You should specify at least one hash sum in this parameter.

path - path to file

Returns: zero on failure, non-zero on success

get_path_of_debian_changelog

free subroutine, returns string path of Debian changelog for version when version is installed, undef otherwise

Parameters:

version - reference to Cupt::Cache::BinaryVersion

get_path_of_debian_copyright

free subroutine, returns string path of Debian copyright for version when version is installed, undef otherwise

Parameters:

version - reference to Cupt::Cache::BinaryVersion

DATA SPECIFICATION

release_info

This is a hash: 

  {
    'signed' => boolean, whether release signed or not
    'version' => version of released distribution (can be undef)
    'description' => description string
    'vendor' => vendor string
    'label' => label string
    'archive' => archive name string
    'codename' => codename string
    'date' => date of release (can be undef)
    'valid-until' => time string when to forget about this release
    'architectures' => reference to array of available architectures
    'base_uri' => base URI (origin), empty string in case of "installed" distribution
        'not_automatic' => true if packages from this release shouldn't be considered for automatic upgrades
  }

index_entry

This is a hash: 

  {
    'type' => { 'deb' | 'deb-src' }
    'uri' => URI string
    'distribution' => distribution path
    'component' => component string
  }

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