CMake/Utilities/Sphinx/cmake.py
Brad King 86578eccf2 Simplify CMake per-source license notices
Per-source copyright/license notice headers that spell out copyright holder
names and years are hard to maintain and often out-of-date or plain wrong.
Precise contributor information is already maintained automatically by the
version control tool.  Ultimately it is the receiver of a file who is
responsible for determining its licensing status, and per-source notices are
merely a convenience.  Therefore it is simpler and more accurate for
each source to have a generic notice of the license name and references to
more detailed information on copyright holders and full license terms.

Our `Copyright.txt` file now contains a list of Contributors whose names
appeared source-level copyright notices.  It also references version control
history for more precise information.  Therefore we no longer need to spell
out the list of Contributors in each source file notice.

Replace CMake per-source copyright/license notice headers with a short
description of the license and links to `Copyright.txt` and online information
available from "https://cmake.org/licensing".  The online URL also handles
cases of modules being copied out of our source into other projects, so we
can drop our notices about replacing links with full license text.

Run the `Utilities/Scripts/filter-notices.bash` script to perform the majority
of the replacements mechanically.  Manually fix up shebang lines and trailing
newlines in a few files.  Manually update the notices in a few files that the
script does not handle.
2016-09-27 15:14:44 -04:00

385 lines
15 KiB
Python

# Distributed under the OSI-approved BSD 3-Clause License. See accompanying
# file Copyright.txt or https://cmake.org/licensing for details.
import os
import re
# Monkey patch for pygments reporting an error when generator expressions are
# used.
# https://bitbucket.org/birkenfeld/pygments-main/issue/942/cmake-generator-expressions-not-handled
from pygments.lexers import CMakeLexer
from pygments.token import Name, Operator
from pygments.lexer import bygroups
CMakeLexer.tokens["args"].append(('(\\$<)(.+?)(>)',
bygroups(Operator, Name.Variable, Operator)))
# Monkey patch for sphinx generating invalid content for qcollectiongenerator
# https://bitbucket.org/birkenfeld/sphinx/issue/1435/qthelp-builder-should-htmlescape-keywords
from sphinx.util.pycompat import htmlescape
from sphinx.builders.qthelp import QtHelpBuilder
old_build_keywords = QtHelpBuilder.build_keywords
def new_build_keywords(self, title, refs, subitems):
old_items = old_build_keywords(self, title, refs, subitems)
new_items = []
for item in old_items:
before, rest = item.split("ref=\"", 1)
ref, after = rest.split("\"")
if ("<" in ref and ">" in ref):
new_items.append(before + "ref=\"" + htmlescape(ref) + "\"" + after)
else:
new_items.append(item)
return new_items
QtHelpBuilder.build_keywords = new_build_keywords
from docutils.parsers.rst import Directive, directives
from docutils.transforms import Transform
try:
from docutils.utils.error_reporting import SafeString, ErrorString
except ImportError:
# error_reporting was not in utils before version 0.11:
from docutils.error_reporting import SafeString, ErrorString
from docutils import io, nodes
from sphinx.directives import ObjectDescription
from sphinx.domains import Domain, ObjType
from sphinx.roles import XRefRole
from sphinx.util.nodes import make_refnode
from sphinx import addnodes
class CMakeModule(Directive):
required_arguments = 1
optional_arguments = 0
final_argument_whitespace = True
option_spec = {'encoding': directives.encoding}
def __init__(self, *args, **keys):
self.re_start = re.compile(r'^#\[(?P<eq>=*)\[\.rst:$')
Directive.__init__(self, *args, **keys)
def run(self):
settings = self.state.document.settings
if not settings.file_insertion_enabled:
raise self.warning('"%s" directive disabled.' % self.name)
env = self.state.document.settings.env
rel_path, path = env.relfn2path(self.arguments[0])
path = os.path.normpath(path)
encoding = self.options.get('encoding', settings.input_encoding)
e_handler = settings.input_encoding_error_handler
try:
settings.record_dependencies.add(path)
f = io.FileInput(source_path=path, encoding=encoding,
error_handler=e_handler)
except UnicodeEncodeError as error:
raise self.severe('Problems with "%s" directive path:\n'
'Cannot encode input file path "%s" '
'(wrong locale?).' %
(self.name, SafeString(path)))
except IOError as error:
raise self.severe('Problems with "%s" directive path:\n%s.' %
(self.name, ErrorString(error)))
raw_lines = f.read().splitlines()
f.close()
rst = None
lines = []
for line in raw_lines:
if rst is not None and rst != '#':
# Bracket mode: check for end bracket
pos = line.find(rst)
if pos >= 0:
if line[0] == '#':
line = ''
else:
line = line[0:pos]
rst = None
else:
# Line mode: check for .rst start (bracket or line)
m = self.re_start.match(line)
if m:
rst = ']%s]' % m.group('eq')
line = ''
elif line == '#.rst:':
rst = '#'
line = ''
elif rst == '#':
if line == '#' or line[:2] == '# ':
line = line[2:]
else:
rst = None
line = ''
elif rst is None:
line = ''
lines.append(line)
if rst is not None and rst != '#':
raise self.warning('"%s" found unclosed bracket "#[%s[.rst:" in %s' %
(self.name, rst[1:-1], path))
self.state_machine.insert_input(lines, path)
return []
class _cmake_index_entry:
def __init__(self, desc):
self.desc = desc
def __call__(self, title, targetid, main = 'main'):
return ('pair', u'%s ; %s' % (self.desc, title), targetid, main)
_cmake_index_objs = {
'command': _cmake_index_entry('command'),
'generator': _cmake_index_entry('generator'),
'manual': _cmake_index_entry('manual'),
'module': _cmake_index_entry('module'),
'policy': _cmake_index_entry('policy'),
'prop_cache': _cmake_index_entry('cache property'),
'prop_dir': _cmake_index_entry('directory property'),
'prop_gbl': _cmake_index_entry('global property'),
'prop_inst': _cmake_index_entry('installed file property'),
'prop_sf': _cmake_index_entry('source file property'),
'prop_test': _cmake_index_entry('test property'),
'prop_tgt': _cmake_index_entry('target property'),
'variable': _cmake_index_entry('variable'),
}
def _cmake_object_inventory(env, document, line, objtype, targetid):
inv = env.domaindata['cmake']['objects']
if targetid in inv:
document.reporter.warning(
'CMake object "%s" also described in "%s".' %
(targetid, env.doc2path(inv[targetid][0])), line=line)
inv[targetid] = (env.docname, objtype)
class CMakeTransform(Transform):
# Run this transform early since we insert nodes we want
# treated as if they were written in the documents.
default_priority = 210
def __init__(self, document, startnode):
Transform.__init__(self, document, startnode)
self.titles = {}
def parse_title(self, docname):
"""Parse a document title as the first line starting in [A-Za-z0-9<]
or fall back to the document basename if no such line exists.
The cmake --help-*-list commands also depend on this convention.
Return the title or False if the document file does not exist.
"""
env = self.document.settings.env
title = self.titles.get(docname)
if title is None:
fname = os.path.join(env.srcdir, docname+'.rst')
try:
f = open(fname, 'r')
except IOError:
title = False
else:
for line in f:
if len(line) > 0 and (line[0].isalnum() or line[0] == '<'):
title = line.rstrip()
break
f.close()
if title is None:
title = os.path.basename(docname)
self.titles[docname] = title
return title
def apply(self):
env = self.document.settings.env
# Treat some documents as cmake domain objects.
objtype, sep, tail = env.docname.rpartition('/')
make_index_entry = _cmake_index_objs.get(objtype)
if make_index_entry:
title = self.parse_title(env.docname)
# Insert the object link target.
if objtype == 'command':
targetname = title.lower()
else:
targetname = title
targetid = '%s:%s' % (objtype, targetname)
targetnode = nodes.target('', '', ids=[targetid])
self.document.note_explicit_target(targetnode)
self.document.insert(0, targetnode)
# Insert the object index entry.
indexnode = addnodes.index()
indexnode['entries'] = [make_index_entry(title, targetid)]
self.document.insert(0, indexnode)
# Add to cmake domain object inventory
_cmake_object_inventory(env, self.document, 1, objtype, targetid)
class CMakeObject(ObjectDescription):
def handle_signature(self, sig, signode):
# called from sphinx.directives.ObjectDescription.run()
signode += addnodes.desc_name(sig, sig)
return sig
def add_target_and_index(self, name, sig, signode):
if self.objtype == 'command':
targetname = name.lower()
else:
targetname = name
targetid = '%s:%s' % (self.objtype, targetname)
if targetid not in self.state.document.ids:
signode['names'].append(targetid)
signode['ids'].append(targetid)
signode['first'] = (not self.names)
self.state.document.note_explicit_target(signode)
_cmake_object_inventory(self.env, self.state.document,
self.lineno, self.objtype, targetid)
make_index_entry = _cmake_index_objs.get(self.objtype)
if make_index_entry:
self.indexnode['entries'].append(make_index_entry(name, targetid))
class CMakeXRefRole(XRefRole):
# See sphinx.util.nodes.explicit_title_re; \x00 escapes '<'.
_re = re.compile(r'^(.+?)(\s*)(?<!\x00)<(.*?)>$', re.DOTALL)
_re_sub = re.compile(r'^([^()\s]+)\s*\(([^()]*)\)$', re.DOTALL)
def __call__(self, typ, rawtext, text, *args, **keys):
# Translate CMake command cross-references of the form:
# `command_name(SUB_COMMAND)`
# to have an explicit target:
# `command_name(SUB_COMMAND) <command_name>`
if typ == 'cmake:command':
m = CMakeXRefRole._re_sub.match(text)
if m:
text = '%s <%s>' % (text, m.group(1))
# CMake cross-reference targets frequently contain '<' so escape
# any explicit `<target>` with '<' not preceded by whitespace.
while True:
m = CMakeXRefRole._re.match(text)
if m and len(m.group(2)) == 0:
text = '%s\x00<%s>' % (m.group(1), m.group(3))
else:
break
return XRefRole.__call__(self, typ, rawtext, text, *args, **keys)
# We cannot insert index nodes using the result_nodes method
# because CMakeXRefRole is processed before substitution_reference
# nodes are evaluated so target nodes (with 'ids' fields) would be
# duplicated in each evaluted substitution replacement. The
# docutils substitution transform does not allow this. Instead we
# use our own CMakeXRefTransform below to add index entries after
# substitutions are completed.
#
# def result_nodes(self, document, env, node, is_ref):
# pass
class CMakeXRefTransform(Transform):
# Run this transform early since we insert nodes we want
# treated as if they were written in the documents, but
# after the sphinx (210) and docutils (220) substitutions.
default_priority = 221
def apply(self):
env = self.document.settings.env
# Find CMake cross-reference nodes and add index and target
# nodes for them.
for ref in self.document.traverse(addnodes.pending_xref):
if not ref['refdomain'] == 'cmake':
continue
objtype = ref['reftype']
make_index_entry = _cmake_index_objs.get(objtype)
if not make_index_entry:
continue
objname = ref['reftarget']
targetnum = env.new_serialno('index-%s:%s' % (objtype, objname))
targetid = 'index-%s-%s:%s' % (targetnum, objtype, objname)
targetnode = nodes.target('', '', ids=[targetid])
self.document.note_explicit_target(targetnode)
indexnode = addnodes.index()
indexnode['entries'] = [make_index_entry(objname, targetid, '')]
ref.replace_self([indexnode, targetnode, ref])
class CMakeDomain(Domain):
"""CMake domain."""
name = 'cmake'
label = 'CMake'
object_types = {
'command': ObjType('command', 'command'),
'generator': ObjType('generator', 'generator'),
'variable': ObjType('variable', 'variable'),
'module': ObjType('module', 'module'),
'policy': ObjType('policy', 'policy'),
'prop_cache': ObjType('prop_cache', 'prop_cache'),
'prop_dir': ObjType('prop_dir', 'prop_dir'),
'prop_gbl': ObjType('prop_gbl', 'prop_gbl'),
'prop_inst': ObjType('prop_inst', 'prop_inst'),
'prop_sf': ObjType('prop_sf', 'prop_sf'),
'prop_test': ObjType('prop_test', 'prop_test'),
'prop_tgt': ObjType('prop_tgt', 'prop_tgt'),
'manual': ObjType('manual', 'manual'),
}
directives = {
'command': CMakeObject,
'variable': CMakeObject,
# Other object types cannot be created except by the CMakeTransform
# 'generator': CMakeObject,
# 'module': CMakeObject,
# 'policy': CMakeObject,
# 'prop_cache': CMakeObject,
# 'prop_dir': CMakeObject,
# 'prop_gbl': CMakeObject,
# 'prop_inst': CMakeObject,
# 'prop_sf': CMakeObject,
# 'prop_test': CMakeObject,
# 'prop_tgt': CMakeObject,
# 'manual': CMakeObject,
}
roles = {
'command': CMakeXRefRole(fix_parens = True, lowercase = True),
'generator': CMakeXRefRole(),
'variable': CMakeXRefRole(),
'module': CMakeXRefRole(),
'policy': CMakeXRefRole(),
'prop_cache': CMakeXRefRole(),
'prop_dir': CMakeXRefRole(),
'prop_gbl': CMakeXRefRole(),
'prop_inst': CMakeXRefRole(),
'prop_sf': CMakeXRefRole(),
'prop_test': CMakeXRefRole(),
'prop_tgt': CMakeXRefRole(),
'manual': CMakeXRefRole(),
}
initial_data = {
'objects': {}, # fullname -> docname, objtype
}
def clear_doc(self, docname):
to_clear = set()
for fullname, (fn, _) in self.data['objects'].items():
if fn == docname:
to_clear.add(fullname)
for fullname in to_clear:
del self.data['objects'][fullname]
def resolve_xref(self, env, fromdocname, builder,
typ, target, node, contnode):
targetid = '%s:%s' % (typ, target)
obj = self.data['objects'].get(targetid)
if obj is None:
# TODO: warn somehow?
return None
return make_refnode(builder, fromdocname, obj[0], targetid,
contnode, target)
def get_objects(self):
for refname, (docname, type) in self.data['objects'].items():
yield (refname, refname, type, docname, refname, 1)
def setup(app):
app.add_directive('cmake-module', CMakeModule)
app.add_transform(CMakeTransform)
app.add_transform(CMakeXRefTransform)
app.add_domain(CMakeDomain)