NAME
    Citeproc::Markdown

  DESCRIPTION
    Package for handling human readable Author/Date citations in markdown
    format. Designed to be good enough for common use cases, not perfect.
    Code is also a good start to a more general Zotero/Perl gateway.

  SYNOPSIS
    Will scan a plain text document paragraph by paragraph for citations
    using a human readable format to key citations. Conversion will warn if
    there are ambiguous citation keys (maybe it should die, not sure).

    Requires mozrepl
    (<https://addons.mozilla.org/en-us/firefox/addon/mozrepl/>) installed
    and running to the same Firefox, or XULRunner that your Zotero library
    is stored in. Other than that, and a working modern perl ( >= 5.10.0) no
    other extensions, firefox or otherwise are required.

    Examples of the format are

     (c|Fletcher 2003 Mapping stakeholder perceptions)
     (c|Law 2008 On sociology)
     (s|Law 2008 On sociology)

    The final example is to supress author (not yet implemented, but
    supported in the regex). The code will warn if more than one keys are
    found (maybe it should die ...)

  TODO
    1. Tests work on my local machine but not elsewhere due to citation
    library differences and zotero setup. 2. Tests only work with a running
    zotero and mozrepl. 3. Need to write the pandoc integration (need to
    write some markdown with citations). 4. Supress author citations not yet
    supported (but stubbed (s| form of citation to support this at a later
    stage. 5. Consider adding compatible zot4rst citation keys.

    However, this module provides the basis for having decent
    markdown/zotero integration without the need for intermediate files. In
    the final implementation I suppose there will be two different versions
    of the script run "markdown_cite --draft" that will keep the author cite
    keys untouched, and dump the references to a file, and "markdown_cite
    --final" that will replace them with the final CSL generated citations.

  BUILD
    Loads the citeproc javascript required for this code to work.

  json_encoder
    JSON::Any object used in data transfer between repl and perl

  js_dir
    sharedir where we keep the javascript required for mozrepl

  add_citation
    takes a list of citation ids, and adds them to the csl processor through
    the repl.

  search
    Takes a citation string, parses it returns the item id. Warns if > 1
    result is returned.

  citations
    hashref of citations seen during document processing, keyed by the
    citation text provided by the user. Used to store citations for
    publication indexed by writer's citation keys.

  repl
    MozRepl object for internal use. Run script with env var DEBUG=1 for
    verbose info, otherwise only warnings and fatals are emitted. DEBUG=1
    will also catch JSON encoding problems.

  run
    sends javascript commands to the repl and returns the result of the last
    command.

  run_file
    Reads in javascript source code, and sends it to the repl paragraph by
    paragraph(delimited by \n\n). WARNING - be sure to ensure that each
    paragraph compiles as a standalone entity. If not the repl will hang
    then time out.

  parse_citation
    parses the citation to author title and year hashref

  citation_regex
    Simple regex for parsing the text string. TODO. consider making a proper
    parser. TODO. consider optional doi support.

  available_styles
    Lazy accessor for the available zotero styles. Returns a hashref: key:
    name val: url.

  set_style
    Uses instantiateCiteProc in citeproc.js to set the current style.

  extract_citation_list
    Takes a list of cites (c|Whatever 1999 Title fragment)(c|Someone 2002
    Stuff) etc and splits into an array for further processing.

  make_bibliography
    Create the bibliography after all citations have been processed.

  process_citation
    Given an in-text citation (could be one or more ([cs]| ... form
    citations, append the final_cite key to its hashref to give the in final
    (publisher) citation for that chunk of text.

  ACKNOWLEDGEMENTS
    Erik Hetzner for the javascript code in zot4rst, which is also used in
    this project (with very minor documentation and naming changes).

    Frank Bennett for the very useful citeproc documentation
    <http://gsl-nagoya-u.net/http/pub/citeproc-doc.html>, which with Erik's
    code enabled me get something that was usable running.