NAME

       BibTeX::Parser::Entry - Contains a single entry of a BibTeX document.

SYNOPSIS

       This class ist a wrapper for a single BibTeX entry. It is usually created by a
       BibTeX::Parser.

           use BibTeX::Parser::Entry;

           my $entry = BibTeX::Parser::Entry->new($type, $key, $parse_ok, \%fields);

           if ($entry->parse_ok) {
                   my $type    = $entry->type;
                   my $key     = $enty->key;
                   print $entry->field("title");
                   my @authors = $entry->author;
                   my @editors = $entry->editor;

                   ...

                   print $entry->to_string;
           }

FUNCTIONS

   new
       Create new entry.

   parse_ok
       If the entry was correctly parsed, this method returns a true value, false otherwise.

   error
       Return the error message, if the entry could not be parsed or undef otherwise.

   type
       Get or set the type of the entry, eg. 'ARTICLE' or 'BOOK'. Return value is always
       uppercase.

   key
       Get or set the reference key of the entry.

   field($name [, $value])
       Get or set the contents of a field. The first parameter is the name of the field, the
       second (optional) value is the new value.

   cleaned_field($name)
       Retrieve the contents of a field in a format that is cleaned of TeX markup.

   cleaned_author
       Get an array of BibTeX::Parser::Author objects for the authors of this entry. Each name
       has been cleaned of accents and braces.

   cleaned_editor
       Get an array of BibTeX::Parser::Author objects for the editors of this entry. Each name
       has been cleaned of accents and braces.

   author([@authors])
       Get or set the authors. Returns an array of BibTeX::Author objects. The parameters can
       either be BibTeX::Author objects or strings.

       Note: You can also change the authors with $entry->field('author', $authors_string)

   editor([@editors])
       Get or set the editors. Returns an array of BibTeX::Author objects. The parameters can
       either be BibTeX::Author objects or strings.

       Note: You can also change the authors with $entry->field('editor', $editors_string)

   fieldlist ()
       Returns a list of all the fields used in this entry.

   has($fieldname)
       Returns a true value if this entry has a value for $fieldname.

   pre ()
       Return the text in BibTeX file before the entry

   raw_bibtex ()
       Return raw BibTeX entry (if available).

   to_string ([options])
       Returns a text of the BibTeX entry in BibTeX format.  Options are a hash.

       "canonize_names"
           If true (the default), authors' and editors' names are translated into canonical
           bibtex form.  The command "$entry->to_string(canonize_names=>0)" overrides this
           behavior.

       "field_capitalization"
           Capitalization of the field names.  Can take values 'Uppercase', 'Lowercase' (the
           default) or 'Titlecase'

       "print_pre"
           False by default.  If true, the text in the Bib file before the entry is printed.
           Note that at present we assume the text before the entry NEVER has the @ symbol inside

       "type_capitalization"
           Capitalization of the type names.  Can take values 'Uppercase' (the default),
           'Lowercase' or 'Titlecase'

VERSION

       version 1.02

AUTHOR

       Gerhard Gossen <gerhard.gossen@googlemail.com> and Boris Veytsman <boris@varphi.com>

COPYRIGHT AND LICENSE

       This software is copyright (c) 2013-2016 by Gerhard Gossen and Boris Veytsman

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