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| -rw-r--r-- | tools/moztreedocs/__init__.py | 230 |
1 files changed, 230 insertions, 0 deletions
diff --git a/tools/moztreedocs/__init__.py b/tools/moztreedocs/__init__.py new file mode 100644 index 0000000000..7d13b4b635 --- /dev/null +++ b/tools/moztreedocs/__init__.py @@ -0,0 +1,230 @@ +# This Source Code Form is subject to the terms of the Mozilla Public +# License, v. 2.0. If a copy of the MPL was not distributed with this +# file, # You can obtain one at http://mozilla.org/MPL/2.0/. + +import os +import tempfile +from pathlib import PurePath + +import frontmatter +import sphinx +import sphinx.ext.apidoc +import yaml +from mozbuild.base import MozbuildObject +from mozbuild.frontend.reader import BuildReader +from mozbuild.util import memoize +from mozpack.copier import FileCopier +from mozpack.files import FileFinder +from mozpack.manifests import InstallManifest + +here = os.path.abspath(os.path.dirname(__file__)) +build = MozbuildObject.from_environment(cwd=here) + +MAIN_DOC_PATH = os.path.normpath(os.path.join(build.topsrcdir, "docs")) + +logger = sphinx.util.logging.getLogger(__name__) + + +@memoize +def read_build_config(docdir): + """Read the active build config and return the relevant doc paths. + + The return value is cached so re-generating with the same docdir won't + invoke the build system a second time.""" + trees = {} + python_package_dirs = set() + + is_main = docdir == MAIN_DOC_PATH + relevant_mozbuild_path = None if is_main else docdir + + # Reading the Sphinx variables doesn't require a full build context. + # Only define the parts we need. + class fakeconfig(object): + topsrcdir = build.topsrcdir + + variables = ("SPHINX_TREES", "SPHINX_PYTHON_PACKAGE_DIRS") + reader = BuildReader(fakeconfig()) + result = reader.find_variables_from_ast(variables, path=relevant_mozbuild_path) + for path, name, key, value in result: + reldir = os.path.dirname(path) + + if name == "SPHINX_TREES": + # If we're building a subtree, only process that specific subtree. + # topsrcdir always uses POSIX-style path, normalize it for proper comparison. + absdir = os.path.normpath(os.path.join(build.topsrcdir, reldir, value)) + if not is_main and absdir not in (docdir, MAIN_DOC_PATH): + continue + + assert key + if key.startswith("/"): + key = key[1:] + else: + key = os.path.normpath(os.path.join(reldir, key)) + + if key in trees: + raise Exception( + "%s has already been registered as a destination." % key + ) + trees[key] = os.path.join(reldir, value) + + if name == "SPHINX_PYTHON_PACKAGE_DIRS": + python_package_dirs.add(os.path.join(reldir, value)) + + return trees, python_package_dirs + + +class _SphinxManager(object): + """Manages the generation of Sphinx documentation for the tree.""" + + def __init__(self, topsrcdir, main_path): + self.topsrcdir = topsrcdir + self.conf_py_path = os.path.join(main_path, "conf.py") + self.index_path = os.path.join(main_path, "index.rst") + + # Instance variables that get set in self.generate_docs() + self.staging_dir = None + self.trees = None + self.python_package_dirs = None + + def generate_docs(self, app): + """Generate/stage documentation.""" + self.staging_dir = os.path.join(app.outdir, "_staging") + + logger.info("Reading Sphinx metadata from build configuration") + self.trees, self.python_package_dirs = read_build_config(app.srcdir) + + logger.info("Staging static documentation") + self._synchronize_docs(app) + + logger.info("Generating Python API documentation") + self._generate_python_api_docs() + + def _generate_python_api_docs(self): + """Generate Python API doc files.""" + out_dir = os.path.join(self.staging_dir, "python") + base_args = ["--no-toc", "-o", out_dir] + + for p in sorted(self.python_package_dirs): + full = os.path.join(self.topsrcdir, p) + + finder = FileFinder(full) + dirs = {os.path.dirname(f[0]) for f in finder.find("**")} + + test_dirs = {"test", "tests"} + excludes = {d for d in dirs if set(PurePath(d).parts) & test_dirs} + + args = list(base_args) + args.append(full) + args.extend(excludes) + + sphinx.ext.apidoc.main(argv=args) + + def _process_markdown(self, m, markdown_file, dest): + """ + When dealing with a markdown file, we check if we have a front matter. + If this is the case, we read the information, create a temporary file, + reuse the front matter info into the md file + """ + with open(markdown_file, "r", encoding="utf_8") as f: + # Load the front matter header + post = frontmatter.load(f) + if len(post.keys()) > 0: + # Has a front matter, use it + with tempfile.NamedTemporaryFile("w", delete=False) as fh: + # Use the frontmatter title + fh.write(post["title"] + "\n") + # Add the md syntax for the title + fh.write("=" * len(post["title"]) + "\n") + # If there is a summary, add it + if "summary" in post: + fh.write(post["summary"] + "\n") + # Write the content + fh.write(post.__str__()) + fh.close() + # Instead of a symlink, we copy the file + m.add_copy(fh.name, dest) + else: + # No front matter, create the symlink like for rst + # as it will be the the same file + m.add_link(markdown_file, dest) + + def _synchronize_docs(self, app): + m = InstallManifest() + + with open(os.path.join(MAIN_DOC_PATH, "config.yml"), "r") as fh: + tree_config = yaml.safe_load(fh)["categories"] + + m.add_link(self.conf_py_path, "conf.py") + + for dest, source in sorted(self.trees.items()): + source_dir = os.path.join(self.topsrcdir, source) + for root, _, files in os.walk(source_dir): + for f in files: + source_path = os.path.normpath(os.path.join(root, f)) + rel_source = source_path[len(source_dir) + 1 :] + target = os.path.normpath(os.path.join(dest, rel_source)) + if source_path.endswith(".md"): + self._process_markdown( + m, source_path, os.path.join(".", target) + ) + else: + m.add_link(source_path, target) + + copier = FileCopier() + m.populate_registry(copier) + copier.copy(self.staging_dir, remove_empty_directories=False) + + with open(self.index_path, "r") as fh: + data = fh.read() + + def is_toplevel(key): + """Whether the tree is nested under the toplevel index, or is + nested under another tree's index. + """ + for k in self.trees: + if k == key: + continue + if key.startswith(k): + return False + return True + + def format_paths(paths): + source_doc = ["%s/index" % p for p in paths] + return "\n ".join(source_doc) + + toplevel_trees = {k: v for k, v in self.trees.items() if is_toplevel(k)} + + CATEGORIES = {} + # generate the datastructure to deal with the tree + for t in tree_config: + CATEGORIES[t] = format_paths(tree_config[t]) + + # During livereload, we don't correctly rebuild the full document + # tree (Bug 1557020). The page is no longer referenced within the index + # tree, thus we shall check categorisation only if complete tree is being rebuilt. + if app.srcdir == self.topsrcdir: + indexes = set( + [ + os.path.normpath(os.path.join(p, "index")) + for p in toplevel_trees.keys() + ] + ) + # Format categories like indexes + cats = "\n".join(CATEGORIES.values()).split("\n") + # Remove heading spaces + cats = [os.path.normpath(x.strip()) for x in cats] + indexes = tuple(set(indexes) - set(cats)) + if indexes: + # In case a new doc isn't categorized + print(indexes) + raise Exception( + "Uncategorized documentation. Please add it in docs/config.yml" + ) + + data = data.format(**CATEGORIES) + + with open(os.path.join(self.staging_dir, "index.rst"), "w") as fh: + fh.write(data) + + +manager = _SphinxManager(build.topsrcdir, MAIN_DOC_PATH) |