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Dpkg::Control::FieldsCore(3perl) libdpkg-perl Dpkg::Control::FieldsCore(3perl)
NAME
Dpkg::Control::FieldsCore - manage (list of official) control fields
DESCRIPTION
The modules contains a list of fieldnames with associated meta-data explaining in which
type of control information they are allowed. The types are the CTRL_* constants exported
by Dpkg::Control.
FUNCTIONS
$f = field_capitalize($field_name)
Returns the field name properly capitalized. All characters are lowercase, except the
first of each word (words are separated by a hyphen in field names).
field_is_official($fname)
Returns true if the field is official and known.
field_is_allowed_in($fname, @types)
Returns true (1) if the field $fname is allowed in all the types listed in the list.
Note that you can use type sets instead of individual types (ex: CTRL_FILE_CHANGES |
CTRL_CHANGELOG).
field_allowed_in(A|B, C) returns true only if the field is allowed in C and either A
or B.
Undef is returned for non-official fields.
field_transfer_single($from, $to, $field)
If appropriate, copy the value of the field named $field taken from the $from
Dpkg::Control object to the $to Dpkg::Control object.
Official fields are copied only if the field is allowed in both types of objects.
Custom fields are treated in a specific manner. When the target is not among
CTRL_PKG_SRC, CTRL_PKG_DEB or CTRL_FILE_CHANGES, then they are always copied as is
(the X- prefix is kept). Otherwise they are not copied except if the target object
matches the target destination encoded in the field name. The initial X denoting
custom fields can be followed by one or more letters among "S" (Source: corresponds to
CTRL_PKG_SRC), "B" (Binary: corresponds to CTRL_PKG_DEB) or "C" (Changes: corresponds
to CTRL_FILE_CHANGES).
Returns undef if nothing has been copied or the name of the new field added to $to
otherwise.
field_transfer_all($from, $to)
Transfer all appropriate fields from $from to $to. Calls field_transfer_single() on
all fields available in $from.
Returns the list of fields that have been added to $to.
field_ordered_list($type)
Returns an ordered list of fields for a given type of control information. This list
can be used to output the fields in a predictable order. The list might be empty for
types where the order does not matter much.
($source, $version) = field_parse_binary_source($ctrl)
Parse the Source field in a binary package control stanza. The field contains the
source package name where it was built from, and optionally a space and the source
version enclosed in parenthesis if it is different from the binary version.
Returns a list with the $source name, and the source $version, or undef or an empty
list when $ctrl does not contain a binary package control stanza. Neither $source nor
$version are validated, but that can be done with Dpkg::Package::pkg_name_is_illegal()
and Dpkg::Version::version_check().
field_list_src_dep()
List of fields that contains dependencies-like information in a source Debian package.
field_list_pkg_dep()
List of fields that contains dependencies-like information in a binary Debian package.
The fields that express real dependencies are sorted from the stronger to the weaker.
field_get_dep_type($field)
Return the type of the dependency expressed by the given field. Can either be "normal"
for a real dependency field (Pre-Depends, Depends, ...) or "union" for other relation
fields sharing the same syntax (Conflicts, Breaks, ...). Returns undef for fields
which are not dependencies.
field_get_sep_type($field)
Return the type of the field value separator. Can be one of FIELD_SEP_UNKNOWN,
FIELD_SEP_SPACE, FIELD_SEP_COMMA or FIELD_SEP_LINE.
field_register($field, $allowed_types, %opts)
Register a new field as being allowed in control information of specified types. %opts
is optional
field_insert_after($type, $ref, @fields)
Place field after another one ($ref) in output of control information of type $type.
field_insert_before($type, $ref, @fields)
Place field before another one ($ref) in output of control information of type $type.
CHANGES
Version 1.01 (dpkg 1.21.0)
New function: field_parse_binary_source().
Version 1.00 (dpkg 1.17.0)
Mark the module as public.
1.21.1 2024-02-23 Dpkg::Control::FieldsCore(3perl)
Generated by $Id: phpMan.php,v 4.55 2007/09/05 04:42:51 chedong Exp $ Author: Che Dong
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Under GNU General Public License
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