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Filename : doctools.py
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# -*- coding: utf-8 -*-
#
# Copyright (C) 2007 Edgewall Software
# All rights reserved.
#
# This software is licensed as described in the file COPYING, which
# you should have received as part of this distribution. The terms
# are also available at http://babel.edgewall.org/wiki/License.
#
# This software consists of voluntary contributions made by many
# individuals. For the exact contribution history, see the revision
# history and logs, available at http://babel.edgewall.org/log/.

from distutils.cmd import Command
import doctest
from glob import glob
import os
import sys

TOOLS_DIR = os.path.dirname(__file__)


class build_doc(Command):
    description = 'generate the documentation'
    user_options = [
        ('force', None,
         "force regeneration even if no reStructuredText files have changed"),
        ('without-apidocs', None,
         "whether to skip the generation of API documentaton"),
    ]
    boolean_options = ['force', 'without-apidocs']

    def initialize_options(self):
        self.force = False
        self.without_apidocs = False

    def finalize_options(self):
        pass

    def run(self):
        from docutils.core import publish_cmdline
        from docutils.nodes import raw
        from docutils.parsers import rst
        from genshi.input import HTMLParser
        from genshi.template import TemplateLoader

        docutils_conf = os.path.join(TOOLS_DIR, 'conf', 'docutils.ini')
        epydoc_conf = os.path.join(TOOLS_DIR, 'conf', 'epydoc.ini')

        try:
            from pygments import highlight
            from pygments.lexers import get_lexer_by_name
            from pygments.formatters import HtmlFormatter

            def code_block(name, arguments, options, content, lineno,
                           content_offset, block_text, state, state_machine):
                lexer = get_lexer_by_name(arguments[0])
                html = highlight('\n'.join(content), lexer, HtmlFormatter())
                return [raw('', html, format='html')]
            code_block.arguments = (1, 0, 0)
            code_block.options = {'language' : rst.directives.unchanged}
            code_block.content = 1
            rst.directives.register_directive('code-block', code_block)
        except ImportError:
            print('Pygments not installed, syntax highlighting disabled')

        loader = TemplateLoader(['doc', 'doc/common'], variable_lookup='strict')
        for source in glob('doc/*.txt'):
            dest = os.path.splitext(source)[0] + '.html'
            if self.force or not os.path.exists(dest) or \
                    os.path.getmtime(dest) < os.path.getmtime(source):
                print('building documentation file %s' % dest)
                publish_cmdline(writer_name='html',
                                argv=['--config=%s' % docutils_conf, source,
                                      dest])
                fileobj = open(dest)
                try:
                    html = HTMLParser(fileobj, encoding='utf-8')
                    template = loader.load('template.html')
                    output = template.generate(
                        html=html,
                        project=self.distribution
                    ).render('html', encoding='utf-8')
                finally:
                    fileobj.close()
                fileobj = open(dest, 'w')
                try:
                    fileobj.write(output)
                finally:
                    fileobj.close()

        if not self.without_apidocs:
            try:
                from epydoc import cli
                old_argv = sys.argv[1:]
                sys.argv[1:] = [
                    '--config=%s' % epydoc_conf,
                    '--top=%s' % self.distribution.packages[0],
                    '--no-private', # epydoc bug, not read from config
                    '--simple-term',
                    '--verbose'
                ] + self.distribution.packages
                cli.cli()
                sys.argv[1:] = old_argv

            except ImportError:
                print('epydoc not installed, skipping API documentation.')


class test_doc(Command):
    description = 'test the code examples in the documentation'
    user_options = []

    def initialize_options(self):
        pass

    def finalize_options(self):
        pass

    def run(self):
        for filename in glob('doc/*.txt'):
            print('testing documentation file %s' % filename)
            doctest.testfile(filename, False, optionflags=doctest.ELLIPSIS)