diff options
Diffstat (limited to 'Documentation/sphinx/automarkup.py')
| -rw-r--r-- | Documentation/sphinx/automarkup.py | 137 |
1 files changed, 99 insertions, 38 deletions
diff --git a/Documentation/sphinx/automarkup.py b/Documentation/sphinx/automarkup.py index b18236370742..a1b0f554cd82 100644 --- a/Documentation/sphinx/automarkup.py +++ b/Documentation/sphinx/automarkup.py @@ -13,6 +13,7 @@ if sphinx.version_info[0] < 2 or \ else: from sphinx.errors import NoUri import re +from itertools import chain # # Regex nastiness. Of course. @@ -21,7 +22,13 @@ import re # :c:func: block (i.e. ":c:func:`mmap()`s" flakes out), so the last # bit tries to restrict matches to things that won't create trouble. # -RE_function = re.compile(r'([\w_][\w\d_]+\(\))') +RE_function = re.compile(r'(([\w_][\w\d_]+)\(\))') +RE_type = re.compile(r'(struct|union|enum|typedef)\s+([\w_][\w\d_]+)') +# +# Detects a reference to a documentation page of the form Documentation/... with +# an optional extension +# +RE_doc = re.compile(r'Documentation(/[\w\-_/]+)(\.\w+)*') # # Many places in the docs refer to common system calls. It is @@ -34,56 +41,110 @@ Skipfuncs = [ 'open', 'close', 'read', 'write', 'fcntl', 'mmap', 'select', 'poll', 'fork', 'execve', 'clone', 'ioctl', 'socket' ] -# -# Find all occurrences of function() and try to replace them with -# appropriate cross references. -# -def markup_funcs(docname, app, node): - cdom = app.env.domains['c'] +def markup_refs(docname, app, node): t = node.astext() done = 0 repl = [ ] - for m in RE_function.finditer(t): + # + # Associate each regex with the function that will markup its matches + # + markup_func = {RE_type: markup_c_ref, + RE_function: markup_c_ref, + RE_doc: markup_doc_ref} + match_iterators = [regex.finditer(t) for regex in markup_func] + # + # Sort all references by the starting position in text + # + sorted_matches = sorted(chain(*match_iterators), key=lambda m: m.start()) + for m in sorted_matches: # - # Include any text prior to function() as a normal text node. + # Include any text prior to match as a normal text node. # if m.start() > done: repl.append(nodes.Text(t[done:m.start()])) + # - # Go through the dance of getting an xref out of the C domain - # - target = m.group(1)[:-2] - target_text = nodes.Text(target + '()') - xref = None - if target not in Skipfuncs: - lit_text = nodes.literal(classes=['xref', 'c', 'c-func']) - lit_text += target_text - pxref = addnodes.pending_xref('', refdomain = 'c', - reftype = 'function', - reftarget = target, modname = None, - classname = None) - # - # XXX The Latex builder will throw NoUri exceptions here, - # work around that by ignoring them. - # - try: - xref = cdom.resolve_xref(app.env, docname, app.builder, - 'function', target, pxref, lit_text) - except NoUri: - xref = None - # - # Toss the xref into the list if we got it; otherwise just put - # the function text. + # Call the function associated with the regex that matched this text and + # append its return to the text # - if xref: - repl.append(xref) - else: - repl.append(target_text) + repl.append(markup_func[m.re](docname, app, m)) + done = m.end() if done < len(t): repl.append(nodes.Text(t[done:])) return repl +# +# Try to replace a C reference (function() or struct/union/enum/typedef +# type_name) with an appropriate cross reference. +# +def markup_c_ref(docname, app, match): + class_str = {RE_function: 'c-func', RE_type: 'c-type'} + reftype_str = {RE_function: 'function', RE_type: 'type'} + + cdom = app.env.domains['c'] + # + # Go through the dance of getting an xref out of the C domain + # + target = match.group(2) + target_text = nodes.Text(match.group(0)) + xref = None + if not (match.re == RE_function and target in Skipfuncs): + lit_text = nodes.literal(classes=['xref', 'c', class_str[match.re]]) + lit_text += target_text + pxref = addnodes.pending_xref('', refdomain = 'c', + reftype = reftype_str[match.re], + reftarget = target, modname = None, + classname = None) + # + # XXX The Latex builder will throw NoUri exceptions here, + # work around that by ignoring them. + # + try: + xref = cdom.resolve_xref(app.env, docname, app.builder, + reftype_str[match.re], target, pxref, + lit_text) + except NoUri: + xref = None + # + # Return the xref if we got it; otherwise just return the plain text. + # + if xref: + return xref + else: + return target_text + +# +# Try to replace a documentation reference of the form Documentation/... with a +# cross reference to that page +# +def markup_doc_ref(docname, app, match): + stddom = app.env.domains['std'] + # + # Go through the dance of getting an xref out of the std domain + # + target = match.group(1) + xref = None + pxref = addnodes.pending_xref('', refdomain = 'std', reftype = 'doc', + reftarget = target, modname = None, + classname = None, refexplicit = False) + # + # XXX The Latex builder will throw NoUri exceptions here, + # work around that by ignoring them. + # + try: + xref = stddom.resolve_xref(app.env, docname, app.builder, 'doc', + target, pxref, None) + except NoUri: + xref = None + # + # Return the xref if we got it; otherwise just return the plain text. + # + if xref: + return xref + else: + return nodes.Text(match.group(0)) + def auto_markup(app, doctree, name): # # This loop could eventually be improved on. Someday maybe we @@ -97,7 +158,7 @@ def auto_markup(app, doctree, name): for para in doctree.traverse(nodes.paragraph): for node in para.traverse(nodes.Text): if not isinstance(node.parent, nodes.literal): - node.parent.replace(node, markup_funcs(name, app, node)) + node.parent.replace(node, markup_refs(name, app, node)) def setup(app): app.connect('doctree-resolved', auto_markup) |