Pod::ParseUtils

NAME

Pod::ParseUtils - helpers for POD parsing and conversion

SYNOPSIS

use Pod::ParseUtils;

my $list = new Pod::List;
my $link = Pod::Hyperlink->new('Pod::Parser');

DESCRIPTION

NOTE: This module is considered legacy; modern Perl releases (5.18 and higher) are going to remove Pod-Parser from core and use Pod-Simple for all things POD.

Pod::ParseUtils contains a few object-oriented helper packages for POD parsing and processing (i.e. in POD formatters and translators).

Pod::List

Pod::List can be used to hold information about POD lists (written as =over ... =item ... =back) for further processing. The following methods are available:

  • Pod::List->new()

    Create a new list object. Properties may be specified through a hash reference like this:

    my $list = Pod::List->new({ -start => $., -indent => 4 });
    

    See the individual methods/properties for details.

  • $list->file()

    Without argument, retrieves the file name the list is in. This must have been set before by either specifying -file in the new() method or by calling the file() method with a scalar argument.

  • $list->start()

    Without argument, retrieves the line number where the list started. This must have been set before by either specifying -start in the new() method or by calling the start() method with a scalar argument.

  • $list->indent()

    Without argument, retrieves the indent level of the list as specified in =over n . This must have been set before by either specifying -indent in the new() method or by calling the indent() method with a scalar argument.

  • $list->type()

    Without argument, retrieves the list type, which can be an arbitrary value, e.g. OL , UL , ... when thinking the HTML way. This must have been set before by either specifying -type in the new() method or by calling the type() method with a scalar argument.

  • $list->rx()

    Without argument, retrieves a regular expression for simplifying the individual item strings once the list type has been determined. Usage: E.g. when converting to HTML, one might strip the leading number in an ordered list as <OL> already prints numbers itself. This must have been set before by either specifying -rx in the new() method or by calling the rx() method with a scalar argument.

  • $list->item()

    Without argument, retrieves the array of the items in this list. The items may be represented by any scalar. If an argument has been given, it is pushed on the list of items.

  • $list->parent()

    Without argument, retrieves information about the parent holding this list, which is represented as an arbitrary scalar. This must have been set before by either specifying -parent in the new() method or by calling the parent() method with a scalar argument.

  • $list->tag()

    Without argument, retrieves information about the list tag, which can be any scalar. This must have been set before by either specifying -tag in the new() method or by calling the tag() method with a scalar argument.

Pod::Hyperlink is a class for manipulation of POD hyperlinks. Usage:

my $link = Pod::Hyperlink->new('alternative text|page/"section in page"');

The Pod::Hyperlink class is mainly designed to parse the contents of the L<...> sequence, providing a simple interface for accessing the different parts of a POD hyperlink for further processing. It can also be used to construct hyperlinks.

Pod::Cache

Pod::Cache holds information about a set of POD documents, especially the nodes for hyperlinks. The following methods are available:

  • Pod::Cache->new()

    Create a new cache object. This object can hold an arbitrary number of POD documents of class Pod::Cache::Item.

  • $cache->item()

    Add a new item to the cache. Without arguments, this method returns a list of all cache elements.

  • $cache->find_page($name)

    Look for a POD document named $name in the cache. Returns the reference to the corresponding Pod::Cache::Item object or undef if not found.

Pod::Cache::Item

Pod::Cache::Item holds information about individual POD documents, that can be grouped in a Pod::Cache object. It is intended to hold information about the hyperlink nodes of POD documents. The following methods are available:

  • Pod::Cache::Item->new()

    Create a new object.

  • $cacheitem->page()

    Set/retrieve the POD document name (e.g. "Pod::Parser").

  • $cacheitem->description()

    Set/retrieve the POD short description as found in the =head1 NAME section.

  • $cacheitem->path()

    Set/retrieve the POD file storage path.

  • $cacheitem->file()

    Set/retrieve the POD file name.

  • $cacheitem->nodes()

    Add a node (or a list of nodes) to the document's node list. Note that the order is kept, i.e. start with the first node and end with the last. If no argument is given, the current list of nodes is returned in the same order the nodes have been added. A node can be any scalar, but usually is a pair of node string and unique id for the find_node method to work correctly.

  • $cacheitem->find_node($name)

    Look for a node or index entry named $name in the object. Returns the unique id of the node (i.e. the second element of the array stored in the node array) or undef if not found.

  • $cacheitem->idx()

    Add an index entry (or a list of them) to the document's index list. Note that the order is kept, i.e. start with the first node and end with the last. If no argument is given, the current list of index entries is returned in the same order the entries have been added. An index entry can be any scalar, but usually is a pair of string and unique id.

AUTHOR

Please report bugs using http://rt.cpan.org.

Marek Rouchal <[email protected]>, borrowing a lot of things from pod2man and pod2roff as well as other POD processing tools by Tom Christiansen, Brad Appleton and Russ Allbery.

Pod::ParseUtils is part of the Pod::Parser distribution.

SEE ALSO

pod2man, pod2roff, Pod::Parser, Pod::Checker, pod2html

© 1993–2016 Larry Wall and others
Licensed under the GNU General Public License version 1 or later, or the Artistic License.
The Perl logo is a trademark of the Perl Foundation.
https://perldoc.perl.org/5.26.0/Pod/ParseUtils.html