Kent Fredric

NAME

String::Sections - Extract labeled groups of sub-strings from a string.

VERSION

version 0.3.2

SYNOPSIS

  use String::Sections;

  my $sections = String::Sections->new();
  my $result = $sections->load_list( @lines );
  # TODO
  # $sections->load_string( $string );
  # $sections->load_filehandle( $fh );
  #
  # $sections->merge( $other_sections_object );

  my @section_names = $result->section_names();
  if ( $result->has_section( 'section_label' ) ) {
    my $string_ref = $result->section( 'section_label' );
    ...
  }

DESCRIPTION

Data Section sports the following default data markup

  __[ somename ]__
  Data
  __[ anothername ]__
  More data

This module is designed to behave as a work-alike, except on already extracted string data.

METHODS

new

new( %args )

  my $object = String::Sections->new();

  my $object = String::Sections->new( attribute_name => 'value' );

load_list ( @strings )

  my @strings = <$fh>;

  my $result = $string_section->load_list( @strings );

This method handles data as if it had been slopped in unchomped from a filehandle.

Ideally, each entry in @strings will be terminated with $/ , as the collated data from each section is concatenated into a large singular string, e.g.:

  $result = $string_section->load_list("__[ Foo ]__\n", "bar\n", "baz\n" );
  $section_foo = $result->section('Foo')
  # bar
  # baz

  $result = $s_s->load_list("__[ Foo ]__\n", "bar", "baz" );
  $result->section('Foo');
  # barbaz

  $object->load_list("__[ Foo ]__", "bar", "baz" ) # will not work by default.

This behaviour may change in the future, but this is how it is with the least effort for now.

load_string

TODO

load_filehandle( $fh )

  my $result = $object->load_filehandle( $fh )

header_regex

empty_line_regex

document_end_regex

line_escape_regex

default_name

stop_at_end

ignore_empty_prelude

enable_escapes

ATTRIBUTES

header_regex

empty_line_regex

document_end_regex

line_escape_regex

default_name

stop_at_end

ignore_empty_prelude

enable_escapes

PRIVATE METHODS

__add_line

_default_header_regex

_default_empty_line_regex

_default_document_end_regex

_default_line_escape_regex

_default_default_name

_default_stop_at_end

_default_ignore_empty_prelude

_default_enable_escapes

PRIVATE FUNCTIONS

_croak

_regex_type

_string_type

_boolean_type

DEVELOPMENT

This code is still new and under development.

All the below facets are likely to change at some point, but don't largely contribute to the API or usage of this module.

  • Needs Perl 5.10.1

    To make some of the development features easier.

Recommended Use with Data::Handle

This modules primary inspiration is Data::Section, but intending to split and decouple many of the internal parts to add leverage to the various behaviors it contains.

Data::Handle solves part of a problem with Perl by providing a more reliable interface to the __DATA__ section in a file that is not impeded by various things that occur if its attempted to be read more than once.

In future, I plan on this being the syntax for connecting Data::Handle with this module to emulate Data::Section:

  my $dh = Data::Handle->new( __PACKAGE__ );
  my $ss = String::Sections->new( stop_at_end => 1 );
  my $result = $ss->load_filehandle( $dh );

This doesn't implicitly perform any of the inheritance tree magic Data::Section does, but its also planned on making that easy to do when you want it with ->merge( $section )

For now, the recommended code is not so different:

  my $dh = Data::Handle->new( __PACKAGE__ );
  my $ss = String::Sections->new( stop_at_end => 1 );
  my $result  = $ss->load_list( <$dh> );

Its just somewhat less efficient.

SIGNIFICANT CHANGES

Since 0.1.x

API

In 0.1.x, API was

    my $section = String::Sections->new();
    $section->load_*( $source );
    $section->section_names

This was inherently fragile, and allowed weird things to occur when people tried to get data from it without it being populated yet.

So starting with 0.2.0, the API is

    my $section = String::Sections->new();
    my $result  = $section->load_*( $source );
    $result->section_names;

And the main class is a factory for String::Sections::Result objects.

AUTHOR

Kent Fredric <kentnl@cpan.org>

COPYRIGHT AND LICENSE

This software is copyright (c) 2013 by Kent Fredric <kentnl@cpan.org>.

This is free software; you can redistribute it and/or modify it under the same terms as the Perl 5 programming language system itself.




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