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code_ext.py
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# -*- coding: utf-8 -*-
"""
TurboGears Code Documentation Extensions
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Extensions to improve documentation management and effectiveness.
These are the features implemented (see http://tinyurl.com/38ljs55):
* Include external resources
- From local files
- From sections of local files
- From a VCS (revision or tag), Subversion, Mercurial, Git, Bazaar supported via pyvcs
* Test sample projects
* Compress sample projects
:copyright: Copyright 2008 by Bruno Melo.
:license: MIT.
"""
import re
import os
import sys
import zipfile
import string
import dulwich
from docutils import nodes, utils
from docutils.parsers.rst import directives, roles, states
from docutils.statemachine import ViewList
from dulwich.client import get_transport_and_path
from pyvcs.backends import get_backend
from sphinx import util
import nose
beginmarker_re = re.compile(r'##\{B:(?P<section>.+)}')
endmarker_re = re.compile(r'##\{E:(?P<section>.+)}')
already_pulled = False
# This is based on 'Multi-line string block formatting' recipe by Brett Levin
# http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/145672
def format_block(block):
"""Format the given block of text, trimming leading/trailing
empty lines and any leading whitespace that is common to all lines.
The purpose is to let us list a code block as a multiline,
triple-quoted Python string, taking care of indentation concerns."""
# separate block into lines
lines = str(block).split('\n')
# remove leading/trailing empty lines
while lines and not lines[0]: del lines[0]
while lines and not lines[-1]: del lines[-1]
# look at first line to see how much indentation to trim
ws = re.match(r'\s*',lines[0]).group(0)
if ws:
lines = map( lambda x: x.replace(ws,'',1), lines )
return '\n'.join(lines)+'\n'
def search(source, section):
"""Search in `source` for a section as specified in markers ##{section}
(begin marker) and ## (end marker) and extract the lines between them.
"""
lineno = 0
begin, end = 0, 0
for line in source:
if not begin:
result = beginmarker_re.search(line)
if result and result.group('section') == section:
begin = lineno + 1
elif not end:
if beginmarker_re.search(line) or endmarker_re.search(line):
end = lineno
lineno += 1
if not end:
end = len(source)
return '\n'.join([source[line] for line in xrange(begin, end) \
if not (beginmarker_re.search(source[line]) \
or endmarker_re.search(source[line])) ])
def localgitpath(state):
e = state.document.settings.env
basepath = os.sep.join(os.path.split(e.doctreedir)[:-1])
path = os.path.join(basepath, 'gitclone')
return path
def clone_and_pull(state, path=None):
"""Clone code_url to path"""
global already_pulled
if already_pulled:
return
e = state.document.settings.env
if not path:
path = localgitpath(state)
client, host_path = get_transport_and_path(e.config.code_url)
if not os.path.exists(path):
os.mkdir(path)
r=dulwich.repo.Repo.init(path)
else:
r=dulwich.repo.Repo(path)
remote_refs = client.fetch(host_path, r, determine_wants=r.object_store.determine_wants_all, progress=None)
r['HEAD'] = remote_refs['HEAD']
already_pulled = True
def get_file(state, path, revision = None, repository = None):
""" Read file from git repository. """
clone_and_pull(state)
git = get_backend('git')
repo = git.Repository(localgitpath(state))
data = repo.file_contents(path, revision).splitlines()
return data
def list_files(state, path='', repo=None):
""" list all files and folders in the repository """
if not repo:
git = get_backend('git')
repo = git.Repository(localgitpath(state))
files, folders = repo.list_directory(path)
if path:
rpath = '%s/' % (path)
else:
rpath = ''
files = ['%s%s' % (rpath, f) for f in files]
for f in folders:
if path:
rpath = '%s/%s' % (path, f)
else:
rpath = f
files.extend(list_files(state, rpath, repo))
return files
def code_directive(name, arguments, options, content, lineno,
content_offset, block_text, state, state_machine):
""" Directive to handle code sample related stuf """
clone_and_pull(state)
if not state.document.settings.file_insertion_enabled:
return [state.document.reporter.warning('File insertion disabled',
line=lineno)]
environment = state.document.settings.env
file_name = arguments[0]
try:
if options.has_key('revision'):
revision = options['revision']
else:
revision = None
data = get_file(state, file_name, revision,
environment.config.code_path)
if options.has_key('section'):
sections = [x.strip() for x in options['section'].split(',')]
res = []
for section in sections:
res.append(format_block(search(data, section)))
res.append('')
source = '\n'.join(res)
else:
source = format_block('\n'.join(data))
retnode = nodes.literal_block(source, source)
retnode.line = 1
except Exception, e:
retnode = state.document.reporter.warning(
'Reading file %r failed: %r' % (arguments[0], str(e)), line=lineno)
else:
if options.has_key('test'):
test = options['test']
if test.startswith(os.sep):
result = nose.run(argv = [__file__, test])
else:
result = nose.run(argv = [__file__
, os.path.join(environment.config.test_path
, test)])
if not result:
retnode = state.document.reporter.warning(
'Test associated to %r failed' % (file_name,),
line=lineno)
if options.has_key('language'):
retnode['language'] = options['language']
return [retnode]
def test_directive(name, arguments, options, content, lineno,
content_offset, block_text, state, state_machine):
""" Directive to test code from external files """
clone_and_pull(state)
environment = state.document.settings.env
test = arguments[0]
if not test.startswith(os.sep):
test = os.path.join(environment.config.test_path, test)
if options.has_key('options'):
opts = options['options'].split(',')
# adjust the options to nose
opts = map(lambda s: "--%s" % s.strip(), opts)
opts.append(test)
else:
opts = [test]
opts.insert(0, __file__)
result = nose.run(argv = opts)
if not result:
retnode = state.document.reporter.warning(
'Test %r failed' % (test,),
line=lineno)
return retnode
return
def archive_role(role, rawtext, text, lineno, inliner, options={}, content=[]):
archive = options['archive']
return [nodes.reference(rawtext, utils.unescape(text), refuri=archive,
**options)], []
role_name = 'arch'
def archive_directive(name, arguments, options, content, lineno,
content_offset, block_text, state, state_machine):
""" Directive to create a archive (zip) from a sample project """
clone_and_pull(state)
environment = state.document.settings.env
static_path = environment.config.html_static_path[0]
directory = arguments[0]
if options.has_key('file'):
filename = options['file']
else:
filename = os.path.basename(directory.rstrip(os.sep)) + '.zip'
archive_file = zipfile.ZipFile(os.path.dirname(os.path.abspath(__file__))
+ '%s%s%s' % (os.sep, static_path, os.sep)
+ filename, "w")
if options.has_key('root'):
base = options['root']
else:
base = ''
fnames = list_files(state, base)
for name in fnames:
archive_file.writestr(name, '\n'.join(get_file(state, name)))
archive_file.close()
archive = util.relative_uri(state_machine.document.current_source,
os.path.dirname(os.path.abspath(__file__))
+ '%s%s%s' % (os.sep, static_path, os.sep)) \
+ filename
role = roles.CustomRole(role_name, archive_role,
{'archive' : archive},
content)
roles.register_local_role(role_name, role)
return []
def setup(app):
code_options = {'section': directives.unchanged,
'language': directives.unchanged,
'test': directives.unchanged,
'revision': directives.unchanged}
test_options = {'options': directives.unchanged}
archive_options = {'file': directives.unchanged,
'root': directives.unchanged}
app.add_config_value('code_url', '', True)
app.add_config_value('code_path', '', True)
app.add_directive('code', code_directive, 1, (1, 0, 1), **code_options)
app.add_directive('test', test_directive, 1, (1, 0, 1), **test_options)
app.add_config_value('test_path', '', True)
app.add_directive('archive', archive_directive, 1, (1, 0, 1), **archive_options)