frag2text 0.0.6
Select and reverse-Markdown (html2text) web page fragments.
License: MIT

frag2text
=========

.. image:: https://img.shields.io/pypi/v/frag2text.svg
        :target: https://pypi.python.org/pypi/frag2text/

Markdown_ gives you HTML from plain text and html2text_ reverses the
process. If you want the plain text version of *a specific section* of
a web page (an HTML fragment), you would normally do the selecting
(parsing) first, then generate the Markdown text to preserve some
formatting.

I made *frag2text* to:

* easily select a web page fragment by CSS selector or XPath
  expression
* get the plain text of the fragment with some formatting intact for
  later use with Markdown
* not shell out to a another program (like lynx -dump)
* not parse HTML or text directly
* use html5lib for robust parsing
* have a simple python module that is easy to maintain (encapsulating
  the tricky business of subclassing parsers, treebuilders and
  serializers, by keeping it simple – this shouldn't require
  BeautifulSoup) 

This is a problem I've tinkered with for some time and solved in many
different ways. It seems trivial but gets ridiculous quickly. If you
have any suggestions or want to share your experiences with other
tools, please let me know.


Install
=======

.. code-block:: shell

    $ pip install frag2text


Usage
=====

python
------

.. code-block:: python

    >>> from frag2text import frag2text
    >>> help(frag2text)
    Help on function frag2text in module frag2text:

    frag2text(endpoint, stype, selector, clean=False, raw=False, verbose=False)
        returns Markdown text of selected fragment.

        Args:
            endpoint: URL, file, or HTML string
            stype: { 'css' | 'xpath' }
            selector: CSS selector or XPath expression
        Returns:
            Markdown text
        Options:
            clean: cleans fragment (lxml.html.clean defaults)
            raw: returns raw HTML fragment
            verbose: show http status, encoding, headers

shell
-----

.. code-block:: shell

    $ frag2text.py -h
    usage: frag2text.py [-h] [-c] [-r] [-v] endpoint {css,xpath} selector

    reverse Markdown (html2text) HTML fragments.

    positional arguments:
      endpoint       URL, file, or HTML string
      {css,xpath}    fragment selector type
      selector       CSS select statement or XPath expression

    optional arguments:
      -h, --help     show this help message and exit
      -c, --clean    clean fragment (lxml.html.clean defaults)
      -r, --raw      output raw fragment
      -v, --verbose  print status, encoding, headers


Examples
========

python
------

.. code-block:: python

    from frag2text import frag2text

    info = frag2text('http://wikipedia.org/wiki/Amanita', 'css', '.infobox')


shell
-----

.. code-block:: shell

    $ frag2text.py "<ht?+><borkt><h1>hello" xpath //h1
    ...
    # hello


CSS select
----------

.. code-block:: shell

    $ frag2text.py http://wikipedia.org/wiki/Amanita css .infobox
    _Amanita_
    ---
    ![Fliegenpilz-1.jpg](//upload.wikimedia.org/wikipedia/commons/thumb/d/d1
    /Fliegenpilz-1.jpg/230px-Fliegenpilz-1.jpg)
    _[Amanita muscaria](/wiki/Amanita_muscaria)_
    Albin Schmalfuß, 1897
    [Scientific classification](/wiki/Biological_classification)
    Kingdom: | [Fungi](/wiki/Fungi)
    Division: | [Basidiomycota](/wiki/Basidiomycota)
    Class: | [Agaricomycetes](/wiki/Agaricomycetes)
    Order: | [Agaricales](/wiki/Agaricales)
    Family: | [Amanitaceae](/wiki/Amanitaceae)
    Genus: | _**Amanita**_
    [Pers.](/wiki/Christian_Hendrik_Persoon) (1794)
    [Type species](/wiki/Type_species)
    _[Amanita muscaria](/wiki/Amanita_muscaria)_
    ([L.](/wiki/Linnaeus)) [Lam.](/wiki/Lam.) (1783)
    [Diversity](/wiki/Biodiversity)
    [c.600 species](/wiki/List_of_Amanita_species)


XPath expression
----------------

.. code-block:: shell

    $ frag2text.py http://en.wikipedia.org/wiki/Amanita xpath '//p[1]'

    The [genus](/wiki/Genus) _**Amanita**_ contains about 600 [species](/wik
    i/Species) of [agarics](/wiki/Agarics) including some of the most [toxic
    ](/wiki/Toxic) known [mushrooms](/wiki/Mushrooms) found worldwide, as we
    ll as some well-regarded edible species. This genus is responsible for a
    pproximately 95% of the fatalities resulting from [mushroom poisoning](/
    wiki/Mushroom_poisoning), with the [death cap](/wiki/Death_cap) accounti
    ng for about 50% on its own. The most potent toxin present in these mush
    rooms is α[-amanitin](/wiki/%CE%91-amanitin).


.. _Markdown: https://github.com/waylan/Python-Markdown
.. _html2text: https://github.com/Alir3z4/html2text/


.. :changelog:

Release History
---------------

0.0.5 (2015-02-18)
++++++++++++++++++

* handle XPathEvalError, SelectorSyntaxError and Nothing found.
* join list of selected fragments, was only returning first.
* do not exit early on error.

0.0.1 (2015-01-14)
++++++++++++++++++

* It seems to work!