# vim: encoding=utf-8 :

from docutils import nodes
from docutils.parsers.rst import directives
from pygments import highlight
from pygments.lexers import get_lexer_by_name
from pygments.formatters import HtmlFormatter

from django.template import Library
from django.conf import settings


register = Library()
PYGMENTS_FORMATTER = HtmlFormatter()

def pygments_directive(name, arguments, options, content, lineno,
                      content_offset, block_text, state, state_machine):
    try:
        lexer = get_lexer_by_name(arguments[0])
    except ValueError:
        # no lexer found
        lexer = get_lexer_by_name('text')
    parsed = highlight(u'\n'.join(content), lexer, PYGMENTS_FORMATTER)
    return [nodes.raw('', parsed, format='html')]
pygments_directive.arguments = (1, 0, 1)
pygments_directive.content = 1
directives.register_directive('sourcecode', pygments_directive)