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authorNĂ­colas F. R. A. Prado <nfraprado@protonmail.com>2020-09-11 16:34:33 +0300
committerJonathan Corbet <corbet@lwn.net>2020-09-16 20:09:51 +0300
commit1ac4cfb2ce03e1a7382c64fe73c9e16c0acc20db (patch)
tree0225ee341d2ab983f25695ca3596de7ce80439a1 /Documentation/sphinx
parent78ff97ebd4e9d02a99ca894b643c78c8fda7df5d (diff)
downloadlinux-1ac4cfb2ce03e1a7382c64fe73c9e16c0acc20db.tar.xz
docs: Allow multiple automarkup functions
The automarkup script previously matched expressions and substituted them with markup to enable automatic cross-reference all in the same function. Split the expression matching iteration and the markup substitution into different functions to make it easier to add new regular expressions and functions to treat each of them. Signed-off-by: NĂ­colas F. R. A. Prado <nfraprado@protonmail.com> Link: https://lore.kernel.org/r/20200911133339.327721-2-nfraprado@protonmail.com Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Diffstat (limited to 'Documentation/sphinx')
-rw-r--r--Documentation/sphinx/automarkup.py97
1 files changed, 55 insertions, 42 deletions
diff --git a/Documentation/sphinx/automarkup.py b/Documentation/sphinx/automarkup.py
index 272eb2bdfab1..6c8e8475eddb 100644
--- a/Documentation/sphinx/automarkup.py
+++ b/Documentation/sphinx/automarkup.py
@@ -36,65 +36,78 @@ Skipfuncs = [ 'open', 'close', 'read', 'write', 'fcntl', 'mmap',
'select', 'poll', 'fork', 'execve', 'clone', 'ioctl',
'socket' ]
-#
-# Find all occurrences of C references (function() and struct/union/enum/typedef
-# type_name) and try to replace them with appropriate cross references.
-#
-def markup_c_refs(docname, app, node):
- class_str = {RE_function: 'c-func', RE_type: 'c-type'}
- reftype_str = {RE_function: 'function', RE_type: 'type'}
-
- cdom = app.env.domains['c']
+def markup_refs(docname, app, node):
t = node.astext()
done = 0
repl = [ ]
#
- # Sort all C references by the starting position in text
+ # Associate each regex with the function that will markup its matches
+ #
+ markup_func = {RE_type: markup_c_ref,
+ RE_function: markup_c_ref}
+ match_iterators = [regex.finditer(t) for regex in markup_func]
#
- sorted_matches = sorted(chain(RE_type.finditer(t), RE_function.finditer(t)),
- key=lambda m: m.start())
+ # 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 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(2)
- target_text = nodes.Text(m.group(0))
- xref = None
- if not (m.re == RE_function and target in Skipfuncs):
- lit_text = nodes.literal(classes=['xref', 'c', class_str[m.re]])
- lit_text += target_text
- pxref = addnodes.pending_xref('', refdomain = 'c',
- reftype = reftype_str[m.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[m.re], 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
+
def auto_markup(app, doctree, name):
#
# This loop could eventually be improved on. Someday maybe we
@@ -108,7 +121,7 @@ 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_c_refs(name, app, node))
+ node.parent.replace(node, markup_refs(name, app, node))
def setup(app):
app.connect('doctree-resolved', auto_markup)