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# Natural Language Toolkit: Documentation generation script
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# Copyright (C) 2001-2006 University of Pennsylvania
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# Author: Edward Loper <edloper@gradient.cis.upenn.edu>
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# Steven Bird (substantially cut down)
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# URL: <http://nltk.sf.net>
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# For license information, see LICENSE.TXT
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This is a customized driver for converting docutils reStructuredText
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documents into HTML and LaTeX. It customizes the standard writers in
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- Source code highlighting is added to all doctest blocks. In
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the HTML output, highlighting is performed using css classes:
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'pysrc-prompt', 'pysrc-keyword', 'pysrc-string', 'pysrc-comment',
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import re, os.path, textwrap, sys, pickle, inspect
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from optparse import OptionParser
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import docutils.core, docutils.nodes, docutils.io
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from docutils.writers import Writer
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from docutils.writers.html4css1 import HTMLTranslator, Writer as HTMLWriter
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from docutils.parsers.rst import directives, roles
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from docutils.readers.standalone import Reader as StandaloneReader
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from docutils.transforms import Transform
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import docutils.writers.html4css1
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from doctest import DocTestParser
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import docutils.statemachine
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LATEX_VALIGN_IS_BROKEN = True
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"""Set to true to compensate for a bug in the latex writer. I've
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submitted a patch to docutils, so hopefully this wil be fixed
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"""The scaling factor that should be used to display bitmapped images
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in latex/pdf output (specified in dots per inch). E.g., if a
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bitmapped image is 100 pixels wide, it will be scaled to
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100/LATEX_DPI inches wide for the latex/pdf output. (Larger
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values produce smaller images in the generated pdf.)"""
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TREE_IMAGE_DIR = 'tree_images/'
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"""The directory that tree images should be written to."""
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EXTERN_REFERENCE_FILES = []
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"""A list of .ref files, for crossrefering to external documents (used
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when building one chapter at a time)."""
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BIBTEX_FILE = '../refs.bib'
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"""The name of the bibtex file used to generate bibliographic entries."""
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BIBLIOGRAPHY_HTML = "bibliography.html"
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"""The name of the HTML file containing the bibliography (for
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hyperrefs from citations)."""
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# needs to include "../doc" so it works in /doc_contrib
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LATEX_STYLESHEET_PATH = '../../doc/definitions.sty'
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"""The name of the LaTeX style file used for generating PDF output."""
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LOCAL_BIBLIOGRAPHY = False
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"""If true, assume that this document contains the bibliography, and
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link to it locally; if false, assume that bibliographic links
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should point to L{BIBLIOGRAPHY_HTML}."""
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PYLISTING_DIR = 'pylisting/'
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"""The directory where pylisting files should be written."""
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PYLISTING_EXTENSION = ".py"
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"""Extension for pylisting files."""
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INCLUDE_DOCTESTS_IN_PYLISTING_FILES = False
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"""If true, include code from doctests in the generated pylisting
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CALLOUT_IMG = '<img src="callouts/callout%s.gif" alt="[%s]" class="callout" />'
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"""HTML code for callout images in pylisting blocks."""
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REF_EXTENSION = '.ref'
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"""File extension for reference files."""
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# needs to include "../doc" so it works in /doc_contrib
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CSS_STYLESHEET = '/dev/null' #/home/nick/exercise-ui/ivle/webapp/tutorial/media/nltkdoc.css'
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"""A global variable, set by main(), indicating the output format for
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the current file. Can be 'latex' or 'html' or 'ref'."""
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OUTPUT_BASENAME = None
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"""A global variable, set by main(), indicating the base filename
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of the current file (i.e., the filename with its extension
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stripped). This is used to generate filenames for images."""
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COPY_CLIPBOARD_JS = ''
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######################################################################
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######################################################################
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def read_ref_file(basename=None):
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if basename is None: basename = OUTPUT_BASENAME
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if not os.path.exists(basename + REF_EXTENSION):
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warning('File %r does not exist!' %
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(basename + REF_EXTENSION))
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return dict(targets=(),terms={},reference_labes={})
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f = open(basename + REF_EXTENSION)
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ref_info = pickle.load(f)
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def write_ref_file(ref_info):
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f = open(OUTPUT_BASENAME + REF_EXTENSION, 'w')
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pickle.dump(ref_info, f)
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def add_to_ref_file(**ref_info):
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if os.path.exists(OUTPUT_BASENAME + REF_EXTENSION):
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info = read_ref_file()
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info.update(ref_info)
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write_ref_file(ref_info)
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######################################################################
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######################################################################
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class example(docutils.nodes.paragraph): pass
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def example_directive(name, arguments, options, content, lineno,
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content_offset, block_text, state, state_machine):
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.. example:: John went to the store.
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To refer to examples, use::
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.. example:: John went to the store.
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In store_, John performed an action.
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text = '\n'.join(content)
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state.nested_parse(content, content_offset, node)
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example_directive.content = True
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directives.register_directive('example', example_directive)
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directives.register_directive('ex', example_directive)
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def doctest_directive(name, arguments, options, content, lineno,
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content_offset, block_text, state, state_machine):
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Used to explicitly mark as doctest blocks things that otherwise
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wouldn't look like doctest blocks.
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text = '\n'.join(content)
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if re.match(r'.*\n\s*\n', block_text):
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warning('doctest-ignore on line %d will not be ignored, '
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'because there is\na blank line between ".. doctest-ignore::"'
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' and the doctest example.' % lineno)
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return [docutils.nodes.doctest_block(text, text, codeblock=True)]
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doctest_directive.content = True
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directives.register_directive('doctest-ignore', doctest_directive)
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def tree_directive(name, arguments, options, content, lineno,
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content_offset, block_text, state, state_machine):
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text = '\n'.join(arguments) + '\n'.join(content)
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# Note: the two filenames generated by these two cases should be
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# different, to prevent conflicts.
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if OUTPUT_FORMAT == 'latex':
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density, scale = 300, 150
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scale = scale * options.get('scale', 100) / 100
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filename = '%s-tree-%s.pdf' % (OUTPUT_BASENAME, _treenum)
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align = LATEX_VALIGN_IS_BROKEN and 'bottom' or 'top'
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elif OUTPUT_FORMAT == 'html':
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density, scale = 100, 100
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density = density * options.get('scale', 100) / 100
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filename = '%s-tree-%s.png' % (OUTPUT_BASENAME, _treenum)
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elif OUTPUT_FORMAT == 'ref':
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assert 0, 'bad output format %r' % OUTPUT_FORMAT
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if not os.path.exists(TREE_IMAGE_DIR):
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os.mkdir(TREE_IMAGE_DIR)
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filename = os.path.join(TREE_IMAGE_DIR, filename)
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tree_to_image(text, filename, density)
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warning('Error parsing tree: %s\n%s\n%s' % (e, text, filename))
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return [example(text, text)]
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imagenode = docutils.nodes.image(uri=filename, scale=scale, align=align)
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tree_directive.arguments = (1,0,1)
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tree_directive.content = True
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tree_directive.options = {'scale': directives.nonnegative_int}
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directives.register_directive('tree', tree_directive)
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def avm_directive(name, arguments, options, content, lineno,
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content_offset, block_text, state, state_machine):
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text = '\n'.join(content)
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if OUTPUT_FORMAT == 'latex':
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latex_avm = parse_avm(textwrap.dedent(text)).as_latex()
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return [docutils.nodes.paragraph('','',
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docutils.nodes.raw('', latex_avm, format='latex'))]
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elif OUTPUT_FORMAT == 'html':
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return [parse_avm(textwrap.dedent(text)).as_table()]
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elif OUTPUT_FORMAT == 'ref':
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return [docutils.nodes.paragraph()]
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except ValueError, e:
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if isinstance(e.args[0], int):
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warning('Error parsing avm on line %s' % (lineno+e.args[0]))
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warning('Error parsing avm on line %s: %s' % (lineno, e))
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node = example(text, text)
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state.nested_parse(content, content_offset, node)
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avm_directive.content = True
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directives.register_directive('avm', avm_directive)
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def def_directive(name, arguments, options, content, lineno,
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content_offset, block_text, state, state_machine):
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state_machine.document.setdefault('__defs__', {})[arguments[0]] = 1
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def_directive.arguments = (1, 0, 0)
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directives.register_directive('def', def_directive)
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def ifdef_directive(name, arguments, options, content, lineno,
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content_offset, block_text, state, state_machine):
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if arguments[0] in state_machine.document.get('__defs__', ()):
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node = docutils.nodes.compound('')
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state.nested_parse(content, content_offset, node)
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ifdef_directive.arguments = (1, 0, 0)
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ifdef_directive.content = True
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directives.register_directive('ifdef', ifdef_directive)
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def ifndef_directive(name, arguments, options, content, lineno,
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content_offset, block_text, state, state_machine):
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if arguments[0] not in state_machine.document.get('__defs__', ()):
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node = docutils.nodes.compound('')
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state.nested_parse(content, content_offset, node)
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ifndef_directive.arguments = (1, 0, 0)
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ifndef_directive.content = True
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directives.register_directive('ifndef', ifndef_directive)
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######################################################################
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######################################################################
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def table_directive(name, arguments, options, content, lineno,
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content_offset, block_text, state, state_machine):
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# The identifier for this table.
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table_id = arguments[0]
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if table_id in _table_ids:
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warning("Duplicate table id %r" % table_id)
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_table_ids.add(table_id)
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# Create a target element for the table
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target = docutils.nodes.target(names=[table_id])
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state_machine.document.note_explicit_target(target)
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# Parse the contents.
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node = docutils.nodes.compound('')
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state.nested_parse(content, content_offset, node)
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if len(node) == 0 or not isinstance(node[0], docutils.nodes.table):
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return [state_machine.reporter.error(
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'Error in "%s" directive: expected table as first child' %
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# Move the caption into the table.
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caption = docutils.nodes.caption('','', *node[1:])
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table.append(caption)
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# Return the target and the table.
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return [target, table]
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table_directive.arguments = (0,1,0) # 1 optional arg, no whitespace
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table_directive.content = True
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table_directive.options = {'caption': directives.unchanged}
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directives.register_directive('table', table_directive)
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######################################################################
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######################################################################
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# We define a new attribute for doctest blocks: 'is_codeblock'. If
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# this attribute is true, then the block contains python code only
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# (i.e., don't expect to find prompts.)
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class pylisting(docutils.nodes.General, docutils.nodes.Element):
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Python source code listing.
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Children: doctest_block+ caption?
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class callout_marker(docutils.nodes.Inline, docutils.nodes.Element):
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A callout marker for doctest block. This element contains no
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children; and defines the attribute 'number'.
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DOCTEST_BLOCK_RE = re.compile('((?:[ ]*>>>.*\n?(?:.*[^ ].*\n?)+\s*)+)',
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CALLOUT_RE = re.compile(r'#[ ]+\[_([\w-]+)\][ ]*$', re.MULTILINE)
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from docutils.nodes import fully_normalize_name as normalize_name
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def pylisting_directive(name, arguments, options, content, lineno,
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content_offset, block_text, state, state_machine):
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# The identifier for this listing.
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listing_id = arguments[0]
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if listing_id in _listing_ids:
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warning("Duplicate listing id %r" % listing_id)
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_listing_ids.add(listing_id)
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# Create the pylisting element itself.
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listing = pylisting('\n'.join(content), name=listing_id, callouts={})
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# Create a target element for the pylisting.
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target = docutils.nodes.target(names=[listing_id])
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state_machine.document.note_explicit_target(target)
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# Divide the text into doctest blocks.
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for i, v in enumerate(DOCTEST_BLOCK_RE.split('\n'.join(content))):
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pysrc = re.sub(r'\A( *\n)+', '', v.rstrip())
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listing.append(docutils.nodes.doctest_block(pysrc, pysrc,
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is_codeblock=(i%2==0)))
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# Add an optional caption.
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if options.get('caption'):
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cap = options['caption'].split('\n')
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caption = docutils.nodes.compound()
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state.nested_parse(docutils.statemachine.StringList(cap),
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content_offset, caption)
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if (len(caption) == 1 and isinstance(caption[0],
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docutils.nodes.paragraph)):
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listing.append(docutils.nodes.caption('', '', *caption[0]))
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warning("Caption should be a single paragraph")
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listing.append(docutils.nodes.caption('', '', *caption))
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return [target, listing]
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pylisting_directive.arguments = (1,0,0) # 1 required arg, no whitespace
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pylisting_directive.content = True
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pylisting_directive.options = {'caption': directives.unchanged}
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directives.register_directive('pylisting', pylisting_directive)
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def callout_directive(name, arguments, options, content, lineno,
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content_offset, block_text, state, state_machine):
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prefix = '%s-' % arguments[0]
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node = docutils.nodes.compound('')
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state.nested_parse(content, content_offset, node)
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if not (len(node.children) == 1 and
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isinstance(node[0], docutils.nodes.field_list)):
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return [state_machine.reporter.error(
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'Error in "%s" directive: may contain a single defintion '
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'list only.' % (name), line=lineno)]
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node[0]['classes'] = ['callouts']
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for field in node[0]:
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if len(field[0]) != 1:
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return [state_machine.reporter.error(
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'Error in "%s" directive: bad field id' % (name), line=lineno)]
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field_name = prefix+('%s' % field[0][0])
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field[0].append(docutils.nodes.reference(field_name, field_name,
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field[0]['classes'] = ['callout']
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callout_directive.arguments = (0,1,0) # 1 optional arg, no whitespace
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callout_directive.content = True
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directives.register_directive('callouts', callout_directive)
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_OPTION_DIRECTIVE_RE = re.compile(
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r'(\n[ ]*\.\.\.[ ]*)?#\s*doctest:\s*([^\n\'"]*)$', re.MULTILINE)
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def strip_doctest_directives(text):
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return _OPTION_DIRECTIVE_RE.sub('', text)
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######################################################################
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######################################################################
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def rst_example_directive(name, arguments, options, content, lineno,
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content_offset, block_text, state, state_machine):
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raw = docutils.nodes.literal_block('', '\n'.join(content))
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out = docutils.nodes.compound('')
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state.nested_parse(content, content_offset, out)
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if OUTPUT_FORMAT == 'latex':
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docutils.nodes.definition_list('',
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docutils.nodes.definition_list_item('',
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docutils.nodes.term('','Input'),
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docutils.nodes.definition('', raw)),
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docutils.nodes.definition_list_item('',
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docutils.nodes.term('','Rendered'),
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docutils.nodes.definition('', out)))]
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docutils.nodes.table('',
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docutils.nodes.tgroup('',
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docutils.nodes.colspec(colwidth=5,classes=['rst-raw']),
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docutils.nodes.colspec(colwidth=5),
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docutils.nodes.thead('',
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docutils.nodes.row('',
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docutils.nodes.entry('',
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docutils.nodes.paragraph('','Input')),
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docutils.nodes.entry('',
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docutils.nodes.paragraph('','Rendered')))),
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docutils.nodes.tbody('',
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docutils.nodes.row('',
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docutils.nodes.entry('',raw),
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docutils.nodes.entry('',out)))),
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classes=["rst-example"])]
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rst_example_directive.arguments = (0, 0, 0)
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rst_example_directive.content = True
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directives.register_directive('rst_example', rst_example_directive)
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######################################################################
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######################################################################
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This | is | used | to | make | aligned | glosses.
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NN | BE | VB | TO | VB | JJ | NN
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class gloss(docutils.nodes.Element): "glossrow+"
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class glossrow(docutils.nodes.Element): "paragraph+"
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def gloss_directive(name, arguments, options, content, lineno,
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content_offset, block_text, state, state_machine):
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# Transform into a table.
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lines = list(content)
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maxlen = max(len(line) for line in lines)
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lines = [('|%-'+`maxlen`+'s|') % line for line in lines]
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for line in (lines+['']):
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div = ['-']*(maxlen+2)
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for m in re.finditer(r'\|', prevline):
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for m in re.finditer(r'\|', line):
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tablestr += ''.join(div) + '\n' + line + '\n'
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table_lines = tablestr.strip().split('\n')
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new_content = docutils.statemachine.StringList(table_lines)
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# [XX] DEBUG GLOSSES:
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# print 'converted to:'
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node = docutils.nodes.compound('')
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state.nested_parse(new_content, content_offset, node)
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if not (len(node.children) == 1 and
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isinstance(node[0], docutils.nodes.table)):
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error = state_machine.reporter.error(
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'Error in "%s" directive: may contain a single table '
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'only.' % (name), line=lineno)
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table['classes'] = ['gloss', 'nolines']
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for colspec in colspecs:
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colspec['colwidth'] = colspec.get('colwidth',4)/2
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return [example('', '', table)]
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gloss_directive.arguments = (0, 0, 0)
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gloss_directive.content = True
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directives.register_directive('gloss', gloss_directive)
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######################################################################
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######################################################################
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class Citations(Transform):
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default_priority = 500 # before footnotes.
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if not os.path.exists(BIBTEX_FILE):
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warning('Warning bibtex file %r not found. '
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'Not linking citations.' % BIBTEX_FILE)
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bibliography = self.read_bibinfo(BIBTEX_FILE)
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for k, citation_refs in self.document.citation_refs.items():
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for citation_ref in citation_refs[:]:
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cite = bibliography.get(citation_ref['refname'].lower())
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new_cite = self.citeref(cite, citation_ref['refname'])
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citation_ref.replace_self(new_cite)
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self.document.citation_refs[k].remove(citation_ref)
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def citeref(self, cite, key):
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if LOCAL_BIBLIOGRAPHY:
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return docutils.nodes.raw('', '\cite{%s}' % key, format='latex')
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return docutils.nodes.reference('', '', docutils.nodes.Text(cite),
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refuri='%s#%s' % (BIBLIOGRAPHY_HTML, key))
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BIB_ENTRY = re.compile(r'@\w+{.*')
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def read_bibinfo(self, filename):
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bibliography = {} # key -> authors, year
548
for line in open(filename):
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# @InProceedings{<key>,
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m = re.match(r'@\w+{([^,]+),$', line)
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key = m.group(1).strip().lower()
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bibliography[key] = [None, None]
557
# author = <authors>,
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m = re.match(r'(?i)author\s*=\s*(.*)$', line)
560
bibliography[key][0] = self.bib_authors(m.group(1))
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m = re.match(r'(?i)editor\s*=\s*(.*)$', line)
564
bibliography[key][0] = self.bib_authors(m.group(1))
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m = re.match(r'(?i)year\s*=\s*(.*)$', line)
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bibliography[key][1] = self.bib_year(m.group(1))
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for key in bibliography:
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if bibliography[key][0] is None: warning('no author found:', key)
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if bibliography[key][1] is None: warning('no year found:', key)
573
bibliography[key] = '[%s, %s]' % tuple(bibliography[key])
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#debug('%20s %s' % (key, `bibliography[key]`))
577
def bib_year(self, year):
578
return re.sub(r'["\'{},]', "", year)
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def bib_authors(self, authors):
581
# Strip trailing comma:
582
if authors[-1:] == ',': authors=authors[:-1]
583
# Strip quotes or braces:
584
authors = re.sub(r'"(.*)"$', r'\1', authors)
585
authors = re.sub(r'{(.*)}$', r'\1', authors)
586
authors = re.sub(r"'(.*)'$", r'\1', authors)
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authors = re.split(r'\s+and\s+', authors)
589
# Keep last name only:
590
authors = [a.split()[-1] for a in authors]
592
if len(authors) == 1:
594
elif len(authors) == 2:
595
return '%s & %s' % tuple(authors)
596
elif len(authors) == 3:
597
return '%s, %s, & %s' % tuple(authors)
599
return '%s et al' % authors[0]
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######################################################################
605
######################################################################
606
class termdef(docutils.nodes.Inline, docutils.nodes.TextElement): pass
607
class idxterm(docutils.nodes.Inline, docutils.nodes.TextElement): pass
608
class index(docutils.nodes.Element): pass
610
def idxterm_role(name, rawtext, text, lineno, inliner,
611
options={}, content=[]):
612
if name == 'dt': options['classes'] = ['termdef']
613
elif name == 'topic': options['classes'] = ['topic']
614
else: options['classes'] = ['term']
615
# Recursively parse the contents of the index term, in case it
616
# contains a substitiution (like |alpha|).
617
nodes, msgs = inliner.parse(text, lineno, memo=inliner,
618
parent=inliner.parent)
619
return [idxterm(rawtext, '', *nodes, **options)], []
621
roles.register_canonical_role('dt', idxterm_role)
622
roles.register_canonical_role('idx', idxterm_role)
623
roles.register_canonical_role('topic', idxterm_role)
625
def index_directive(name, arguments, options, content, lineno,
626
content_offset, block_text, state, state_machine):
627
pending = docutils.nodes.pending(ConstructIndex)
628
pending.details.update(options)
629
state_machine.document.note_pending(pending)
630
return [index('', pending)]
631
index_directive.arguments = (0, 0, 0)
632
index_directive.content = False
633
index_directive.options = {'extern': directives.flag}
634
directives.register_directive('index', index_directive)
637
class SaveIndexTerms(Transform):
638
default_priority = 810 # before NumberReferences transform
640
v = FindTermVisitor(self.document)
641
self.document.walkabout(v)
643
if OUTPUT_FORMAT == 'ref':
644
add_to_ref_file(terms=v.terms)
646
class ConstructIndex(Transform):
647
default_priority = 820 # after NumberNodes, before NumberReferences.
649
# Find any indexed terms in this document.
650
v = FindTermVisitor(self.document)
651
self.document.walkabout(v)
654
# Check the extern reference files for additional terms.
655
if 'extern' in self.startnode.details:
656
for filename in EXTERN_REFERENCE_FILES:
657
basename = os.path.splitext(filename)[0]
658
terms.update(read_ref_file(basename)['terms'])
660
# Build the index & insert it into the document.
661
index_node = self.build_index(terms)
662
self.startnode.replace_self(index_node)
664
def build_index(self, terms):
665
if not terms: return []
667
top = docutils.nodes.bullet_list('', classes=['index'])
671
for key in sorted(terms.keys()):
672
if key[:1] != start_letter:
673
top.append(docutils.nodes.list_item(
674
'', docutils.nodes.paragraph('', key[:1].upper()+'\n',
675
classes=['index-heading']),
676
docutils.nodes.bullet_list('', classes=['index-section']),
678
section = top[-1][-1]
679
section.append(self.entry(terms[key]))
680
start_letter = key[:1]
684
def entry(self, term_info):
685
entrytext, name, sectnum = term_info
686
if sectnum is not None:
687
entrytext.append(docutils.nodes.emphasis('', ' (%s)' % sectnum))
688
ref = docutils.nodes.reference('', '', refid=name,
691
para = docutils.nodes.paragraph('', '', ref)
692
return docutils.nodes.list_item('', para, classes=['index'])
694
class FindTermVisitor(docutils.nodes.SparseNodeVisitor):
695
def __init__(self, document):
697
docutils.nodes.NodeVisitor.__init__(self, document)
698
def unknown_visit(self, node): pass
699
def unknown_departure(self, node): pass
701
def visit_idxterm(self, node):
702
node['name'] = node['id'] = self.idxterm_key(node)
703
node['names'] = node['ids'] = [node['id']]
704
container = self.container_section(node)
706
entrytext = node.deepcopy()
707
if container: sectnum = container.get('sectnum')
710
self.terms[node['name']] = (entrytext, name, sectnum)
712
def idxterm_key(self, node):
713
key = re.sub('\W', '_', node.astext().lower())+'_index_term'
714
if key not in self.terms: return key
716
while '%s_%d' % (key, n) in self.terms: n += 1
717
return '%s_%d' % (key, n)
719
def container_section(self, node):
720
while not isinstance(node, docutils.nodes.section):
721
if node.parent is None: return None
722
else: node = node.parent
727
######################################################################
729
######################################################################
731
class ResolveExternalCrossrefs(Transform):
733
Using the information from EXTERN_REFERENCE_FILES, look for any
734
links to external targets, and set their `refuid` appropriately.
735
Also, if they are a figure, section, table, or example, then
736
replace the link of the text with the appropriate counter.
738
default_priority = 849 # right before dangling refs
741
ref_dict = self.build_ref_dict()
742
v = ExternalCrossrefVisitor(self.document, ref_dict)
743
self.document.walkabout(v)
745
def build_ref_dict(self):
746
"""{target -> (uri, label)}"""
748
for filename in EXTERN_REFERENCE_FILES:
749
basename = os.path.splitext(filename)[0]
750
if OUTPUT_FORMAT == 'html':
751
uri = os.path.split(basename)[-1]+'.html'
753
uri = os.path.split(basename)[-1]+'.pdf'
754
if basename == OUTPUT_BASENAME:
755
pass # don't read our own ref file.
756
elif not os.path.exists(basename+REF_EXTENSION):
757
warning('%s does not exist' % (basename+REF_EXTENSION))
759
ref_info = read_ref_file(basename)
760
for ref in ref_info['targets']:
761
label = ref_info['reference_labels'].get(ref)
762
ref_dict[ref] = (uri, label)
766
class ExternalCrossrefVisitor(docutils.nodes.NodeVisitor):
767
def __init__(self, document, ref_dict):
768
docutils.nodes.NodeVisitor.__init__(self, document)
769
self.ref_dict = ref_dict
770
def unknown_visit(self, node): pass
771
def unknown_departure(self, node): pass
773
# Don't mess with the table of contents.
774
def visit_topic(self, node):
775
if 'contents' in node.get('classes', ()):
776
raise docutils.nodes.SkipNode
778
def visit_reference(self, node):
779
if node.resolved: return
780
node_id = node.get('refid') or node.get('refname')
781
if node_id in self.ref_dict:
782
uri, label = self.ref_dict[node_id]
783
#debug('xref: %20s -> %-30s (label=%s)' % (
784
# node_id, uri+'#'+node_id, label))
785
node['refuri'] = '%s#%s' % (uri, node_id)
788
if label is not None:
789
if node.get('expanded_ref'):
790
warning('Label %s is defined both locally (%s) and '
791
'externally (%s)' % (node_id, node[0], label))
795
node.append(docutils.nodes.Text(label))
796
expand_reference_text(node)
798
######################################################################
800
######################################################################
803
.. exercise:: path.xml
806
class exercise(docutils.nodes.paragraph,docutils.nodes.Element): pass
808
def exercise_directive(name, arguments, options, content, lineno,
809
content_offset, block_text, state, state_machine):
810
return [exercise('', arguments[0])]
812
exercise_directive.arguments = (1, 0, 0)
813
exercise_directive.content = False
814
directives.register_directive('exercise', exercise_directive)
817
######################################################################
818
#{ Challenges (optional exercises; harder than usual)
819
######################################################################
822
.. challenge:: path.xml
825
class challenge(docutils.nodes.paragraph,docutils.nodes.Element): pass
827
def challenge_directive(name, arguments, options, content, lineno,
828
content_offset, block_text, state, state_machine):
829
return [challenge('', arguments[0])]
831
challenge_directive.arguments = (1, 0, 0)
832
challenge_directive.content = False
833
directives.register_directive('challenge', challenge_directive)
837
######################################################################
838
#{ Figure & Example Numbering
839
######################################################################
841
# [xx] number examples, figures, etc, relative to chapter? e.g.,
842
# figure 3.2? maybe number examples within-chapter, but then restart
845
class section_context(docutils.nodes.Invisible, docutils.nodes.Element):
846
def __init__(self, context):
847
docutils.nodes.Element.__init__(self, '', context=context)
848
assert self['context'] in ('body', 'preface', 'appendix')
850
def section_context_directive(name, arguments, options, content, lineno,
851
content_offset, block_text, state, state_machine):
852
return [section_context(name)]
853
section_context_directive.arguments = (0,0,0)
854
directives.register_directive('preface', section_context_directive)
855
directives.register_directive('body', section_context_directive)
856
directives.register_directive('appendix', section_context_directive)
858
class NumberNodes(Transform):
860
This transform adds numbers to figures, tables, and examples; and
861
converts references to the figures, tables, and examples to use
862
these numbers. For example, given the rst source::
865
.. ex:: John likes Mary.
867
See example my_example_.
869
This transform will assign a number to the example, '(1)', and
870
will replace the following text with 'see example (1)', with an
873
# dangling = 850; contents = 720.
874
default_priority = 800
876
v = NumberingVisitor(self.document)
877
self.document.walkabout(v)
878
self.document.reference_labels = v.reference_labels
879
self.document.callout_labels = v.callout_labels
881
class NumberReferences(Transform):
882
default_priority = 830
884
v = ReferenceVisitor(self.document, self.document.reference_labels,
885
self.document.callout_labels)
886
self.document.walkabout(v)
888
# Save reference info to a pickle file.
889
if OUTPUT_FORMAT == 'ref':
890
add_to_ref_file(reference_labels=self.document.reference_labels,
893
class NumberingVisitor(docutils.nodes.NodeVisitor):
895
A transforming visitor that adds figure numbers to all figures,
896
and converts any references to figures to use the text 'Figure #';
897
and adds example numbers to all examples, and converts any
898
references to examples to use the text 'Example #'.
900
LETTERS = 'abcdefghijklmnopqrstuvwxyz'
901
ROMAN = 'i ii iii iv v vi vii viii ix x'.split()
902
ROMAN += ['x%s' % r for r in ROMAN]
904
def __init__(self, document):
905
docutils.nodes.NodeVisitor.__init__(self, document)
906
self.reference_labels = {}
909
self.example_num = [0]
910
self.section_num = [0]
912
self.callout_labels = {} # name -> number
913
self.set_section_context = None
914
self.section_context = 'body' # preface, appendix, body
916
#////////////////////////////////////////////////////////////
918
#////////////////////////////////////////////////////////////
920
def visit_figure(self, node):
922
num = '%s.%s' % (self.format_section_num(1), self.figure_num)
923
for node_id in self.get_ids(node):
924
self.reference_labels[node_id] = '%s' % num
925
self.label_node(node, 'Figure %s' % num)
927
#////////////////////////////////////////////////////////////
929
#////////////////////////////////////////////////////////////
931
def visit_table(self, node):
932
if 'avm' in node['classes']: return
933
if 'gloss' in node['classes']: return
934
if 'rst-example' in node['classes']: return
935
if 'doctest-list' in node['classes']: return
937
num = '%s.%s' % (self.format_section_num(1), self.table_num)
938
for node_id in self.get_ids(node):
939
self.reference_labels[node_id] = '%s' % num
940
self.label_node(node, 'Table %s' % num)
942
#////////////////////////////////////////////////////////////
944
#////////////////////////////////////////////////////////////
946
def visit_pylisting(self, node):
947
self.listing_num += 1
948
num = '%s.%s' % (self.format_section_num(1), self.listing_num)
949
for node_id in self.get_ids(node):
950
self.reference_labels[node_id] = '%s' % num
951
pyfile = re.sub('\W', '_', node['name']) + PYLISTING_EXTENSION
952
self.label_node(node, 'Listing %s (%s)' % (num, pyfile),
953
PYLISTING_DIR + pyfile)
954
self.callout_labels.update(node['callouts'])
956
def visit_doctest_block(self, node):
957
if isinstance(node.parent, pylisting):
958
callouts = node['callouts'] = node.parent['callouts']
960
callouts = node['callouts'] = {}
962
pysrc = ''.join(('%s' % c) for c in node)
963
for callout_id in CALLOUT_RE.findall(pysrc):
964
callouts[callout_id] = len(callouts)+1
965
self.callout_labels.update(callouts)
967
#////////////////////////////////////////////////////////////
969
#////////////////////////////////////////////////////////////
970
max_section_depth = 3
971
no_section_numbers_in_preface = True
972
TOP_SECTION = 'chapter'
974
# [xx] I don't think this currently does anything..
975
def visit_document(self, node):
976
if (len(node)>0 and isinstance(node[0], docutils.nodes.title) and
977
isinstance(node[0].children[0], docutils.nodes.Text) and
978
re.match(r'(\d+(.\d+)*)\.?\s+', node[0].children[0].data)):
979
node['sectnum'] = node[0].children[0].data.split()[0]
980
for node_id in node.get('ids', []):
981
self.reference_labels[node_id] = '%s' % node['sectnum']
983
def visit_section(self, node):
986
# Check if we're entering a new context.
987
if len(self.section_num) == 1 and self.set_section_context:
988
self.start_new_context(node)
990
# Record the section's context in its title.
991
title['section_context'] = self.section_context
993
# Increment the section counter.
994
self.section_num[-1] += 1
996
# If a section number is given explicitly as part of the
997
# title, then it overrides our counter.
998
if isinstance(title.children[0], docutils.nodes.Text):
999
m = re.match(r'(\d+(.\d+)*)\.?\s+', title.children[0].data)
1001
pieces = [int(n) for n in m.group(1).split('.')]
1002
if len(pieces) == len(self.section_num):
1003
self.section_num = pieces
1004
title.children[0].data = title.children[0].data[m.end():]
1006
warning('Explicit section number (%s) does not match '
1007
'current section depth' % m.group(1))
1008
self.prepend_raw_latex(node, r'\setcounter{%s}{%d}' %
1009
(self.TOP_SECTION, self.section_num[0]-1))
1011
# Record the reference pointer for this section; and add the
1012
# section number to the section title.
1013
node['sectnum'] = self.format_section_num()
1014
for node_id in node.get('ids', []):
1015
self.reference_labels[node_id] = '%s' % node['sectnum']
1016
if (len(self.section_num) <= self.max_section_depth and
1017
(OUTPUT_FORMAT != 'latex') and
1018
not (self.section_context == 'preface' and
1019
self.no_section_numbers_in_preface)):
1020
label = docutils.nodes.generated('', node['sectnum']+u'\u00a0'*3,
1021
classes=['sectnum'])
1022
title.insert(0, label)
1025
# Record the section number.
1026
self.section_num.append(0)
1028
# If this was a top-level section, then restart the figure,
1029
# table, and listing counters
1030
if len(self.section_num) == 2:
1033
self.listing_num = 0
1035
def start_new_context(self,node):
1036
# Set the 'section_context' var.
1037
self.section_context = self.set_section_context
1038
self.set_section_context = None
1040
# Update our counter.
1041
self.section_num[0] = 0
1043
# Update latex's counter.
1044
if self.section_context == 'preface': style = 'Roman'
1045
elif self.section_context == 'body': style = 'arabic'
1046
elif self.section_context == 'appendix': style = 'Alph'
1047
raw_latex = (('\n'+r'\setcounter{%s}{0}' + '\n' +
1048
r'\renewcommand \the%s{\%s{%s}}'+'\n') %
1049
(self.TOP_SECTION, self.TOP_SECTION, style, self.TOP_SECTION))
1050
if self.section_context == 'appendix':
1051
raw_latex += '\\appendix\n'
1052
self.prepend_raw_latex(node, raw_latex)
1054
def prepend_raw_latex(self, node, raw_latex):
1055
if isinstance(node, docutils.nodes.document):
1056
node.insert(0, docutils.nodes.raw('', raw_latex, format='latex'))
1058
node_index = node.parent.children.index(node)
1059
node.parent.insert(node_index, docutils.nodes.raw('', raw_latex,
1062
def depart_section(self, node):
1063
self.section_num.pop()
1065
def format_section_num(self, depth=None):
1066
pieces = [('%s' % p) for p in self.section_num]
1067
if self.section_context == 'body':
1068
pieces[0] = ('%s' % self.section_num[0])
1069
elif self.section_context == 'preface':
1070
pieces[0] = self.ROMAN[self.section_num[0]-1].upper()
1071
elif self.section_context == 'appendix':
1072
pieces[0] = self.LETTERS[self.section_num[0]-1].upper()
1074
assert 0, 'unexpected section context'
1076
return '.'.join(pieces)
1078
return '.'.join(pieces[:depth])
1081
def visit_section_context(self, node):
1082
assert node['context'] in ('body', 'preface', 'appendix')
1083
self.set_section_context = node['context']
1084
node.replace_self([])
1086
#////////////////////////////////////////////////////////////
1088
#////////////////////////////////////////////////////////////
1089
NESTED_EXAMPLES = True
1091
def visit_example(self, node):
1092
self.example_num[-1] += 1
1093
node['num'] = self.short_example_num()
1094
for node_id in self.get_ids(node):
1095
self.reference_labels[node_id] = self.format_example_num()
1096
self.example_num.append(0)
1098
def depart_example(self, node):
1099
if not self.NESTED_EXAMPLES:
1100
if self.example_num[-1] > 0:
1101
# If the example contains a list of subexamples, then
1102
# splice them in to our parent.
1103
node.replace_self(list(node))
1104
self.example_num.pop()
1106
def short_example_num(self):
1107
if len(self.example_num) == 1:
1108
return '(%s)' % self.example_num[0]
1109
if len(self.example_num) == 2:
1110
return '%s.' % self.LETTERS[self.example_num[1]-1]
1111
if len(self.example_num) == 3:
1112
return '%s.' % self.ROMAN[self.example_num[2]-1]
1114
return '%s.' % self.example_num[-1]
1116
def format_example_num(self):
1117
""" (1), (2); (1a), (1b); (1a.i), (1a.ii)"""
1118
ex_num = ('%s' % self.example_num[0])
1119
if len(self.example_num) > 1:
1120
ex_num += self.LETTERS[self.example_num[1]-1]
1121
if len(self.example_num) > 2:
1122
ex_num += '.%s' % self.ROMAN[self.example_num[2]-1]
1123
for n in self.example_num[3:]:
1125
return '(%s)' % ex_num
1127
#////////////////////////////////////////////////////////////
1129
#////////////////////////////////////////////////////////////
1131
def unknown_visit(self, node): pass
1132
def unknown_departure(self, node): pass
1134
def get_ids(self, node):
1135
node_index = node.parent.children.index(node)
1136
if node_index>0 and isinstance(node.parent[node_index-1],
1137
docutils.nodes.target):
1138
target = node.parent[node_index-1]
1139
if target.has_key('refid'):
1140
refid = target['refid']
1141
target['ids'] = [refid]
1144
elif target.has_key('ids'):
1145
return target['ids']
1147
warning('unable to find id for %s' % target)
1151
def label_node(self, node, label, refuri=None, cls='caption-label'):
1152
if not isinstance(node[-1], docutils.nodes.caption):
1153
node.append(docutils.nodes.caption())
1156
if OUTPUT_FORMAT == 'html':
1157
cap = docutils.nodes.inline('', label, classes=[cls])
1159
cap = docutils.nodes.reference('', '', cap, refuri=refuri,
1160
mimetype='text/x-python')
1161
caption.insert(0, cap)
1162
if len(caption) > 1:
1163
caption.insert(1, docutils.nodes.Text(': '))
1165
class ReferenceVisitor(docutils.nodes.NodeVisitor):
1166
def __init__(self, document, reference_labels, callout_labels):
1167
self.reference_labels = reference_labels
1168
self.callout_labels = callout_labels
1169
self.targets = set()
1170
docutils.nodes.NodeVisitor.__init__(self, document)
1171
def unknown_visit(self, node):
1172
if isinstance(node, docutils.nodes.Element):
1173
self.targets.update(node.get('names', []))
1174
self.targets.update(node.get('ids', []))
1175
def unknown_departure(self, node): pass
1177
# Don't mess with the table of contents.
1178
def visit_topic(self, node):
1179
if 'contents' in node.get('classes', ()):
1180
raise docutils.nodes.SkipNode
1182
def visit_reference(self, node):
1183
node_id = (node.get('refid') or
1184
self.document.nameids.get(node.get('refname')) or
1185
node.get('refname'))
1186
if node_id in self.reference_labels:
1187
label = self.reference_labels[node_id]
1189
node.append(docutils.nodes.Text(label))
1190
expand_reference_text(node)
1191
elif node_id in self.callout_labels:
1192
label = self.callout_labels[node_id]
1194
node.append(callout_marker(number=label, name='ref-%s' % node_id))
1195
expand_reference_text(node)
1196
# There's no explicitly encoded target element, so manually
1197
# resolve the reference:
1198
node['refid'] = node_id
1199
node.resolved = True
1201
_EXPAND_REF_RE = re.compile(r'(?is)^(.*)(%s)\s+$' % '|'.join(
1202
['figure', 'table', 'example', 'chapter', 'section', 'appendix',
1203
'sentence', 'tree', 'listing', 'program']))
1204
def expand_reference_text(node):
1205
"""If the reference is immediately preceeded by the word 'figure'
1206
or the word 'table' or 'example', then include that word in the
1207
link (rather than just the number)."""
1208
if node.get('expanded_ref'):
1209
assert 0, ('Already expanded!! %s' % node)
1210
node_index = node.parent.children.index(node)
1212
prev_node = node.parent.children[node_index-1]
1213
if (isinstance(prev_node, docutils.nodes.Text)):
1214
m = _EXPAND_REF_RE.match(prev_node.data)
1216
prev_node.data = m.group(1)
1217
link = node.children[0]
1218
link.data = '%s %s' % (m.group(2), link.data)
1219
node['expanded_ref'] = True
1221
######################################################################
1222
#{ Feature Structures (AVMs)
1223
######################################################################
1226
def __init__(self, ident):
1230
def assign(self, key, val):
1231
if key in self.keys: raise ValueError('duplicate key')
1232
self.keys.append(key)
1233
self.vals[key] = val
1236
for key in self.keys:
1237
val = self.vals[key]
1238
if isinstance(val, AVMPointer):
1239
vals.append('%s -> %s' % (key, val.ident))
1241
vals.append('%s = %s' % (key, val))
1242
s = '{%s}' % ', '.join(vals)
1243
if self.ident: s += '[%s]' % self.ident
1247
return '\\begin{avm}\n%s\\end{avm}\n' % self._as_latex()
1249
def _as_latex(self, indent=0):
1250
if self.ident: ident = '\\@%s ' % self.ident
1252
lines = ['%s %s & %s' % (indent*' ', key,
1253
self.vals[key]._as_latex(indent+1))
1254
for key in self.keys]
1255
return ident + '\\[\n' + ' \\\\\n'.join(lines) + '\\]\n'
1257
def _entry(self, val, cls):
1258
if isinstance(val, basestring):
1259
return docutils.nodes.entry('',
1260
docutils.nodes.paragraph('', val), classes=[cls])
1262
return docutils.nodes.entry('', val, classes=[cls])
1264
def _pointer(self, ident):
1265
return docutils.nodes.paragraph('', '',
1266
docutils.nodes.inline(ident, ident,
1267
classes=['avm-pointer']))
1270
return docutils.nodes.paragraph('', '[]',
1271
classes=['avm-empty'])
1274
for key in self.keys:
1275
val = self.vals[key]
1276
key_node = self._entry(key, 'avm-key')
1277
if isinstance(val, AVMPointer):
1278
eq_node = self._entry(u'\u2192', 'avm-eq') # right arrow
1279
val_node = self._entry(self._pointer(val.ident), 'avm-val')
1280
elif isinstance(val, AVM):
1281
eq_node = self._entry('=', 'avm-eq')
1282
val_node = self._entry(val.as_table(), 'avm-val')
1284
value = ('%s' % val.val).replace(' ', u'\u00a0') # =nbsp
1285
eq_node = self._entry('=', 'avm-eq')
1286
val_node = self._entry(value, 'avm-val')
1288
rows.append(docutils.nodes.row('', key_node, eq_node, val_node))
1290
# Add left/right bracket nodes:
1291
if len(self.keys)==1: vpos = 'topbot'
1292
elif key == self.keys[0]: vpos = 'top'
1293
elif key == self.keys[-1]: vpos = 'bot'
1295
rows[-1].insert(0, self._entry(u'\u00a0', 'avm-%sleft' % vpos))
1296
rows[-1].append(self._entry(u'\u00a0', 'avm-%sright' % vpos))
1299
if key == self.keys[0] and self.ident:
1300
rows[-1].append(self._entry(self._pointer(self.ident),
1303
rows[-1].append(self._entry(u'\u00a0', 'avm-ident'))
1305
colspecs = [docutils.nodes.colspec(colwidth=1) for i in range(6)]
1307
tbody = docutils.nodes.tbody('', *rows)
1308
tgroup = docutils.nodes.tgroup('', cols=3, *(colspecs+[tbody]))
1309
table = docutils.nodes.table('', tgroup, classes=['avm'])
1313
def __init__(self, ident, val):
1317
if self.ident: return '%s[%s]' % (self.val, self.ident)
1318
else: return '%r' % self.val
1319
def _as_latex(self, indent=0):
1320
return '%s' % self.val
1323
def __init__(self, ident):
1326
return '[%s]' % self.ident
1327
def _as_latex(self, indent=0):
1328
return '\\@{%s}' % self.ident
1330
def parse_avm(s, ident=None):
1331
lines = [l.rstrip() for l in s.split('\n') if l.strip()]
1332
if not lines: raise ValueError(0)
1333
lines.append('[%s]' % (' '*(len(lines[0])-2)))
1335
# Create our new AVM.
1338
w = len(lines[0]) # Line width
1339
avmval_pos = None # (left, right, top) for nested AVMs
1340
key = None # Key for nested AVMs
1341
ident = None # Identifier for nested AVMs
1343
NESTED = re.compile(r'\[\s+(\[.*\])\s*\]$')
1344
ASSIGN = re.compile(r'\[\s*(?P<KEY>[^\[=>]+?)\s*'
1346
r'(\((?P<ID>\d+)\))?\s*'
1347
r'((?P<VAL>.+?))\s*\]$')
1348
BLANK = re.compile(r'\[\s+\]$')
1350
for lineno, line in enumerate(lines):
1351
#debug('%s %s %s %r' % (lineno, key, avmval_pos, line))
1352
if line[0] != '[' or line[-1] != ']' or len(line) != w:
1353
raise ValueError(lineno)
1355
nested_m = NESTED.match(line)
1356
assign_m = ASSIGN.match(line)
1357
blank_m = BLANK.match(line)
1358
if not (nested_m or assign_m or blank_m):
1359
raise ValueError(lineno)
1361
if nested_m or (assign_m and assign_m.group('VAL').startswith('[')):
1362
left, right = line.index('[',1), line.rindex(']', 0, -1)+1
1363
if avmval_pos is None:
1364
avmval_pos = (left, right, lineno)
1365
elif avmval_pos[:2] != (left, right):
1366
raise ValueError(lineno)
1369
if assign_m.group('VAL').startswith('['):
1370
if key is not None: raise ValueError(lineno)
1371
if assign_m.group('EQ') != '=': raise ValueError(lineno)
1372
key = assign_m.group('KEY')
1373
ident = assign_m.group('ID')
1375
if assign_m.group('EQ') == '=':
1376
avm.assign(assign_m.group('KEY'),
1377
AVMValue(assign_m.group('ID'),
1378
assign_m.group('VAL')))
1380
if assign_m.group('VAL').strip(): raise ValueError(lineno)
1381
avm.assign(assign_m.group('KEY'),
1382
AVMPointer(assign_m.group('ID')))
1384
if blank_m and avmval_pos is not None:
1385
left, right, top = avmval_pos
1386
valstr = '\n'.join(l[left:right] for l in lines[top:lineno])
1387
avm.assign(key, parse_avm(valstr, ident))
1388
key = avmval_pos = None
1394
######################################################################
1395
#{ Doctest Indentation
1396
######################################################################
1398
class UnindentDoctests(Transform):
1400
In our source text, we have indented most of the doctest blocks,
1401
for two reasons: it makes copy/pasting with the doctest script
1402
easier; and it's more readable. But we don't *actually* want them
1403
to be included in block_quote environments when we output them.
1404
So this transform looks for any doctest_block's that are the only
1405
child of a block_quote, and eliminates the block_quote.
1407
default_priority = 1000
1409
self.document.walkabout(UnindentDoctestVisitor(self.document))
1411
class UnindentDoctestVisitor(docutils.nodes.NodeVisitor):
1412
def __init__(self, document):
1413
docutils.nodes.NodeVisitor.__init__(self, document)
1414
def unknown_visit(self, node): pass
1415
def unknown_departure(self, node): pass
1416
def visit_block_quote(self, node):
1417
if (len(node) == sum([1 for c in node if
1418
isinstance(c, docutils.nodes.doctest_block)])):
1419
node.replace_self(list(node))
1420
raise docutils.nodes.SkipNode()
1422
_OPTION_DIRECTIVE_RE = re.compile(
1423
r'(\n[ ]*\.\.\.[ ]*)?#\s*doctest:\s*([^\n\'"]*)$', re.MULTILINE)
1424
def strip_doctest_directives(text):
1425
return _OPTION_DIRECTIVE_RE.sub('', text)
1427
class pylisting(docutils.nodes.General, docutils.nodes.Element):
1429
Python source code listing.
1431
Children: doctest_block+ caption?
1433
######################################################################
1435
######################################################################
1436
from epydoc.docwriter.html_colorize import PythonSourceColorizer
1437
import epydoc.docwriter.html_colorize
1438
epydoc.docwriter.html_colorize .PYSRC_EXPANDTO_JAVASCRIPT = ''
1440
class CustomizedHTMLWriter(HTMLWriter):
1441
settings_defaults = HTMLWriter.settings_defaults.copy()
1442
settings_defaults.update({
1443
'stylesheet': CSS_STYLESHEET,
1444
'stylesheet_path': None,
1445
'output_encoding': 'unicode',
1446
'output_encoding_error_handler': 'xmlcharrefreplace',
1450
HTMLWriter.__init__(self)
1451
self.translator_class = CustomizedHTMLTranslator
1453
#def translate(self):
1454
# postprocess(self.document)
1455
# HTMLWriter.translate(self)
1457
class CustomizedHTMLTranslator(HTMLTranslator):
1458
def __init__(self, document):
1459
HTMLTranslator.__init__(self, document)
1460
self.head_prefix.append(COPY_CLIPBOARD_JS)
1462
def visit_pylisting(self, node):
1463
self._write_pylisting_file(node)
1464
self.body.append(self.CODEBOX_HEADER % ('pylisting', 'pylisting'))
1466
def depart_pylisting(self, node):
1467
self.body.append(self.CODEBOX_FOOTER)
1469
def visit_doctest_block(self, node):
1470
# Collect the text content of the doctest block.
1471
text = ''.join(('%s' % c) for c in node)
1472
text = textwrap.dedent(text)
1473
text = strip_doctest_directives(text)
1474
text = text.decode('latin1')
1476
# Colorize the contents of the doctest block.
1477
if hasattr(node, 'callouts'):
1478
callouts = node['callouts']
1481
colorizer = HTMLDoctestColorizer(self.encode, callouts)
1482
if node.get('is_codeblock'):
1483
pysrc = colorizer.colorize_codeblock(text)
1486
pysrc = colorizer.colorize_doctest(text)
1493
if node.get('is_codeblock'): typ = 'codeblock'
1494
else: typ = 'doctest'
1495
pysrc = self.CODEBOX_ROW % (typ, typ, pysrc)
1497
if not isinstance(node.parent, pylisting):
1498
self.body.append(self.CODEBOX_HEADER % ('doctest', 'doctest'))
1499
self.body.append(pysrc)
1500
self.body.append(self.CODEBOX_FOOTER)
1502
self.body.append(pysrc)
1504
raise docutils.nodes.SkipNode() # Content already processed
1506
CODEBOX_HEADER = ('<div class="%s">\n'
1507
'<table border="0" cellpadding="0" cellspacing="0" '
1508
'class="%s" width="95%%">\n')
1509
CODEBOX_FOOTER = '</table></div>\n'
1510
CODEBOX_ROW = textwrap.dedent('''\
1512
<table border="0" cellpadding="0" cellspacing="0" width="100%%">
1513
<tr><td width="1" class="copybar"
1514
onclick="javascript:copy_%s_to_clipboard(this.nextSibling);"
1516
<td class="pysrc">%s</td>
1517
</tr></table></td></tr>\n''')
1519
# For generated pylisting files:
1520
_PYLISTING_FILE_HEADER = "# Natural Language Toolkit: %s\n\n"
1522
def _write_pylisting_file(self, node):
1523
if not os.path.exists(PYLISTING_DIR):
1524
os.mkdir(PYLISTING_DIR)
1526
name = re.sub('\W', '_', node['name'])
1527
filename = os.path.join(PYLISTING_DIR, name+PYLISTING_EXTENSION)
1528
out = open(filename, 'w')
1529
out.write(self._PYLISTING_FILE_HEADER % name)
1531
if not isinstance(child, docutils.nodes.doctest_block):
1533
elif child['is_codeblock']:
1534
out.write(''.join(('%s' % c) for c in child)+'\n\n')
1535
elif INCLUDE_DOCTESTS_IN_PYLISTING_FILES:
1536
lines = ''.join(('%s' % c) for c in child).split('\n')
1537
in_doctest_block = False
1539
if line.startswith('>>> '):
1540
out.write(line[4:]+'\n')
1541
in_doctest_block = True
1542
elif line.startswith('... ') and in_doctest_block:
1543
out.write(line[4:]+'\n')
1545
if in_doctest_block:
1546
out.write('# Expect:\n')
1547
out.write('# ' + line+'\n')
1548
in_doctest_block = False
1550
out.write(line+'\n')
1551
in_doctest_block = False
1554
def visit_exercise(self, node):
1555
self.body.append('<exercise weight="1" src="')
1557
def depart_exercise(self, node):
1558
self.body.append('"/>\n')
1560
def visit_challenge(self, node):
1561
self.body.append('<exercise weight="0" src="')
1563
def depart_challenge(self, node):
1564
self.body.append('"/>\n')
1566
def visit_literal(self, node):
1567
"""Process text to prevent tokens from wrapping."""
1568
text = ''.join(('%s' % c) for c in node)
1569
text = text.decode('latin1')
1570
colorizer = HTMLDoctestColorizer(self.encode)
1571
pysrc = colorizer.colorize_inline(text)#.strip()
1572
#pysrc = colorize_doctestblock(text, self._markup_pysrc, True)
1573
self.body+= [self.starttag(node, 'tt', '', CLASS='doctest'),
1574
'<span class="pre">%s</span></tt>' % pysrc]
1575
raise docutils.nodes.SkipNode() # Content already processed
1577
def _markup_pysrc(self, s, tag):
1578
return '\n'.join('<span class="pysrc-%s">%s</span>' %
1579
(tag, self.encode(line))
1580
for line in s.split('\n'))
1582
def visit_example(self, node):
1584
'<p><table border="0" cellpadding="0" cellspacing="0" '
1585
'class="example">\n '
1586
'<tr valign="top"><td width="30" align="right">'
1587
'%s</td><td width="15"></td><td>' % node['num'])
1589
def depart_example(self, node):
1590
self.body.append('</td></tr></table></p>\n')
1592
def visit_idxterm(self, node):
1593
self.body.append('<span class="%s">' % ' '.join(node['classes']))
1594
if 'topic' in node['classes']: raise docutils.nodes.SkipChildren
1596
def depart_idxterm(self, node):
1597
self.body.append('</span>')
1599
def visit_index(self, node):
1600
self.body.append('<div class="index">\n<h1>Index</h1>\n')
1602
def depart_index(self, node):
1603
self.body.append('</div>\n')
1605
_seen_callout_markers = set()
1606
def visit_callout_marker(self, node):
1607
# Only add an id to a marker the first time we see it.
1608
add_id = (node['name'] not in self._seen_callout_markers)
1609
self._seen_callout_markers.add(node['name'])
1611
self.body.append('<span id="%s">' % node['name'])
1612
self.body.append(CALLOUT_IMG % (node['number'], node['number']))
1614
self.body.append('</span>')
1615
raise docutils.nodes.SkipNode() # Done with this node.
1617
def depart_field_name(self, node):
1618
# Don't add ":" in callout field lists.
1619
if 'callout' in node['classes']:
1620
self.body.append(self.context.pop())
1622
HTMLTranslator.depart_field_name(self, node)
1624
def _striphtml_len(self, s):
1625
return len(re.sub(r'&[^;]+;', 'x', re.sub(r'<[^<]+>', '', s)))
1627
def visit_caption(self, node):
1628
if isinstance(node.parent, pylisting):
1629
self.body.append('<tr><td class="caption">')
1630
HTMLTranslator.visit_caption(self, node)
1632
def depart_caption(self, node):
1633
if isinstance(node.parent, pylisting):
1634
self.body.append('</td></tr>')
1635
HTMLTranslator.depart_caption(self, node)
1637
def starttag(self, node, tagname, suffix='\n', empty=0, **attributes):
1638
if node.get('mimetype'):
1639
attributes['type'] = node.get('mimetype')
1640
return HTMLTranslator.starttag(self, node, tagname, suffix,
1641
empty, **attributes)
1643
######################################################################
1644
#{ Source Code Highlighting
1645
######################################################################
1647
# [xx] Note: requires the very latest svn version of epydoc!
1648
from epydoc.markup.doctest import DoctestColorizer
1650
class HTMLDoctestColorizer(DoctestColorizer):
1651
PREFIX = '<pre class="doctest">\n'
1653
def __init__(self, encode_func, callouts=None):
1654
self.encode = encode_func
1655
self.callouts = callouts
1656
def markup(self, s, tag):
1658
return self.encode(s)
1659
elif (tag == 'comment' and self.callouts is not None and
1660
CALLOUT_RE.match(s)):
1661
callout_id = CALLOUT_RE.match(s).group(1)
1662
callout_num = self.callouts[callout_id]
1663
img = CALLOUT_IMG % (callout_num, callout_num)
1664
return ('<a name="%s" /><a href="#ref-%s">%s</a>' %
1665
(callout_id, callout_id, img))
1667
return ('<span class="pysrc-%s">%s</span>' %
1668
(tag, self.encode(s)))
1670
######################################################################
1671
#{ Customized Reader (register new transforms)
1672
######################################################################
1674
class CustomizedReader(StandaloneReader):
1676
UnindentDoctests, # 1000
1678
def get_transforms(self):
1679
return StandaloneReader.get_transforms(self) + self._TRANSFORMS
1682
######################################################################
1684
######################################################################
1686
_OUTPUT_RE = re.compile(r'<div class="document">\s+(.*)\s+</div>\n</body>\n</html>',
1687
re.MULTILINE | re.DOTALL)
1691
CustomizedHTMLWriter.settings_defaults.update()
1692
header = '.. include:: ' + os.path.join(
1693
os.path.dirname(inspect.getfile(rst)), 'definitions.txt') + '\n'
1694
input = header + input
1695
output = docutils.core.publish_string(input,
1696
writer=CustomizedHTMLWriter(), reader=CustomizedReader())
1697
match = _OUTPUT_RE.search(output)
1699
return "<div>" + match.group(1) + "</div>"
1701
raise ValueError('Could not process exercise definition')
1703
except docutils.utils.SystemMessage, e:
1704
print 'Fatal error encountered!', e
added
removed
ivle/worksheet/rst.py
