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# -*- coding: utf-8 -*-
"""
sphinx.directives.code
~~~~~~~~~~~~~~~~~~~~~~
:copyright: Copyright 2007-2010 by the Sphinx team, see AUTHORS.
:license: BSD, see LICENSE for details.
"""
import os
import sys
import codecs
from os import path
from docutils import nodes
from docutils.parsers.rst import Directive, directives
from sphinx import addnodes
from sphinx.util import parselinenos
class Highlight(Directive):
"""
Directive to set the highlighting language for code blocks, as well
as the threshold for line numbers.
"""
has_content = False
required_arguments = 1
optional_arguments = 0
final_argument_whitespace = False
option_spec = {
'linenothreshold': directives.unchanged,
}
def run(self):
if 'linenothreshold' in self.options:
try:
linenothreshold = int(self.options['linenothreshold'])
except Exception:
linenothreshold = 10
else:
linenothreshold = sys.maxint
return [addnodes.highlightlang(lang=self.arguments[0].strip(),
linenothreshold=linenothreshold)]
class CodeBlock(Directive):
"""
Directive for a code block with special highlighting or line numbering
settings.
"""
has_content = True
required_arguments = 1
optional_arguments = 0
final_argument_whitespace = False
option_spec = {
'linenos': directives.flag,
}
def run(self):
code = u'\n'.join(self.content)
literal = nodes.literal_block(code, code)
literal['language'] = self.arguments[0]
literal['linenos'] = 'linenos' in self.options
return [literal]
class LiteralInclude(Directive):
"""
Like ``.. include:: :literal:``, but only warns if the include file is
not found, and does not raise errors. Also has several options for
selecting what to include.
"""
has_content = False
required_arguments = 1
optional_arguments = 0
final_argument_whitespace = False
option_spec = {
'linenos': directives.flag,
'tab-width': int,
'language': directives.unchanged_required,
'encoding': directives.encoding,
'pyobject': directives.unchanged_required,
'lines': directives.unchanged_required,
'start-after': directives.unchanged_required,
'end-before': directives.unchanged_required,
'prepend': directives.unchanged_required,
'append': directives.unchanged_required,
}
def run(self):
document = self.state.document
filename = self.arguments[0]
if not document.settings.file_insertion_enabled:
return [document.reporter.warning('File insertion disabled',
line=self.lineno)]
env = document.settings.env
if filename.startswith('/') or filename.startswith(os.sep):
rel_fn = filename[1:]
else:
docdir = path.dirname(env.doc2path(env.docname, base=None))
rel_fn = path.join(docdir, filename)
try:
fn = path.join(env.srcdir, rel_fn)
except UnicodeDecodeError:
# the source directory is a bytestring with non-ASCII characters;
# let's try to encode the rel_fn in the file system encoding
rel_fn = rel_fn.encode(sys.getfilesystemencoding())
fn = path.join(env.srcdir, rel_fn)
if 'pyobject' in self.options and 'lines' in self.options:
return [document.reporter.warning(
'Cannot use both "pyobject" and "lines" options',
line=self.lineno)]
encoding = self.options.get('encoding', env.config.source_encoding)
codec_info = codecs.lookup(encoding)
try:
f = codecs.StreamReaderWriter(open(fn, 'rb'),
codec_info[2], codec_info[3], 'strict')
lines = f.readlines()
f.close()
except (IOError, OSError):
return [document.reporter.warning(
'Include file %r not found or reading it failed' % filename,
line=self.lineno)]
except UnicodeError:
return [document.reporter.warning(
'Encoding %r used for reading included file %r seems to '
'be wrong, try giving an :encoding: option' %
(encoding, filename))]
objectname = self.options.get('pyobject')
if objectname is not None:
from sphinx.pycode import ModuleAnalyzer
analyzer = ModuleAnalyzer.for_file(fn, '')
tags = analyzer.find_tags()
if objectname not in tags:
return [document.reporter.warning(
'Object named %r not found in include file %r' %
(objectname, filename), line=self.lineno)]
else:
lines = lines[tags[objectname][1]-1 : tags[objectname][2]-1]
linespec = self.options.get('lines')
if linespec is not None:
try:
linelist = parselinenos(linespec, len(lines))
except ValueError, err:
return [document.reporter.warning(str(err), line=self.lineno)]
lines = [lines[i] for i in linelist]
startafter = self.options.get('start-after')
endbefore = self.options.get('end-before')
prepend = self.options.get('prepend')
append = self.options.get('append')
if startafter is not None or endbefore is not None:
use = not startafter
res = []
for line in lines:
if not use and startafter and startafter in line:
use = True
elif use and endbefore and endbefore in line:
use = False
break
elif use:
res.append(line)
lines = res
if prepend:
lines.insert(0, prepend + '\n')
if append:
lines.append(append + '\n')
text = ''.join(lines)
if self.options.get('tab-width'):
text = text.expandtabs(self.options['tab-width'])
retnode = nodes.literal_block(text, text, source=fn)
retnode.line = 1
if self.options.get('language', ''):
retnode['language'] = self.options['language']
if 'linenos' in self.options:
retnode['linenos'] = True
document.settings.env.note_dependency(rel_fn)
return [retnode]
directives.register_directive('highlight', Highlight)
directives.register_directive('highlightlang', Highlight) # old
directives.register_directive('code-block', CodeBlock)
directives.register_directive('sourcecode', CodeBlock)
directives.register_directive('literalinclude', LiteralInclude)
|
