slimish-jinja2: A Python repository from ThoughtNirvana

Slim templates syntax for Jinja2.

This release breaks compatibility. Parsing = for Jinja Output is complex. I dropped it in favor of directly using {{ jinja_output }}.

This release(1.0) onwards, the backward syntax compatibility will be maintained.

Installation

pip install slimish_jinja

Examples of using it as Jinja2 extension(jinja_demo.py), with Flask(flask_demo.py) and standalone(convert.py and demo.py) are bundled.

If you want to use it for any other purpose, the lexer - lexer.py and parser - parser.py are simple enough. lexer reads the input by lines and generates tokens. parser implements a hand rolled recursive descent parser.

For quick reference, this slim::

!5
html
head
    / Inline static content.
    title
    - block title
        |Slimish-Jinja Example
    / Self closing tag with attributes.
    meta name="keywords" content="template language"
    %script type="text/javascript" src="{{ ASSET_URL }}"
    script
    / Empty jinja tag.
    @block script

/ 'id' and 'class' shortcut.
body#home.fluid.liquid
    / Nested static content.
    h1
    |This is my header.
    / 'div' with 'id' and 'class' shortcut.
    #contents.main
    / Empty html tag.
    %div
    p Dynamic {{ content }}
    p
        |Nested dyanmic  {{ content }}
        Left indent is preserved in text blocks.
    p
        |<a href="http://www.google.com">Google</a>
    / Dynamic attributes.
    ul class="{{ user_class }}"
    / Jinja tag.
    - for user in users
        li {{ user.name }}
        - if user.last_name
        li {{ user.last_name }}
        - elif user.middle_name
        li {{ user.middle_name }}
    - else
        li No user found.

converts to::

<!doctype html>
<html>
<head>
    <title>
    {% block title %}
        Slimish-Jinja Example
    {% endblock %}
    </title>
    <meta  content="template language" name="keywords"/>
    <script>
    {% block script %}{% endblock %}
    </script>
</head>
<body id="home" class="fluid liquid">
    <h1>
    This is my header.
    </h1>
    <div id="contents" class="main">
    <div></div>
    <p>Dynamic {{ content }}</p>
    <p>
        Nested dyanmic {{ content }}        Left indent is preserved in text blocks.
    </p>
    <p>
        <a href="http://www.thoughtnirvana.com">ThoughtNirvana</a>
    </p>
    </div>
    <ul  class="{{ user_class }}">
    {% for user in users %}
        <li>{{ user.name }}</li>
        {% if user.last_name %}
        <li>{{ user.last_name }}</li>
        {% elif user.middle_name %}
        <li>{{ user.middle_name }}</li>
        {% endif %}
    {% else %}
        <li>No user found.</li>
    {% endfor %}
    </ul>
</body>
</html>

Doctype delcarations.

!html      
<!DOCTYPE html>

!5         
<!DOCTYPE html>

!1.1       
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">

!strict
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">

!frameset
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Frameset//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-frameset.dtd">

!mobile
<!DOCTYPE html PUBLIC "-//WAPFORUM//DTD XHTML Mobile 1.2//EN" "http://www.openmobilealliance.org/tech/DTD/xhtml-mobile12.dtd">

!basic
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML Basic 1.1//EN" "http://www.w3.org/TR/xhtml-basic/xhtml-basic11.dtd">

!transitional
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">


!strict
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">

!frameset
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Frameset//EN" "http://www.w3.org/TR/html4/frameset.dtd">

!transitional
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">

Static content

/ Inline static content.
h1 This is my header

/ Nested static content.
h1
  |This is my header

/ Multiline static content.
p
  |Span mutliple lines.
     Left indent preserved in the output.

Dynamic content

/ Inline
h1 {{ user.title }}

/ Nested
h1
  {{ user.title }}

/ Mixed with text.
h1
  |The user name is {{ user.name }}

Jinja tags

- for user in users
  li {{ user.name }}
  - if {{ user.lastname }}
    li {{ user.lastname }}
- else
  li No users found

Dynamic contents in attribute

  a href="{{ user.url  }}" {{ user.name }}

id and classname shortcuts

#contents.main.liquid => <div id="contents" class="main liquid">

body#home.left => <body id="home" class="left">

Code comments.

/ Single slash comments.
/ Not part of the output.
p This is content.

Empty html tags

%div => <div></div>

Empty jinja tags.

@block title => {%block title %}{% endblock %}

thoughtnirvana/slimish-jinja2