1 files changed, 117 insertions, 0 deletions
diff --git a/tools/docs/mach_commands.py b/tools/docs/mach_commands.py
new file mode 100644
index 000000000..825e5ec38
--- /dev/null
+++ b/tools/docs/mach_commands.py
@@ -0,0 +1,117 @@
+# 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/.
+
+from __future__ import absolute_import, print_function, unicode_literals
+
+import os
+import sys
+
+from mach.decorators import (
+    Command,
+    CommandArgument,
+    CommandProvider,
+)
+
+import mozhttpd
+
+from mozbuild.base import MachCommandBase
+
+
+@CommandProvider
+class Documentation(MachCommandBase):
+    """Helps manage in-tree documentation."""
+
+    @Command('doc', category='devenv',
+        description='Generate and display documentation from the tree.')
+    @CommandArgument('what', nargs='*', metavar='DIRECTORY [, DIRECTORY]',
+        help='Path(s) to documentation to build and display.')
+    @CommandArgument('--format', default='html',
+        help='Documentation format to write.')
+    @CommandArgument('--outdir', default=None, metavar='DESTINATION',
+        help='Where to write output.')
+    @CommandArgument('--no-open', dest='auto_open', default=True, action='store_false',
+        help="Don't automatically open HTML docs in a browser.")
+    @CommandArgument('--http', const=':6666', metavar='ADDRESS', nargs='?',
+        help='Serve documentation on an HTTP server, e.g. ":6666".')
+    def build_docs(self, what=None, format=None, outdir=None, auto_open=True, http=None):
+        self._activate_virtualenv()
+        self.virtualenv_manager.install_pip_package('sphinx_rtd_theme==0.1.6')
+
+        import sphinx
+        import webbrowser
+
+        if not outdir:
+            outdir = os.path.join(self.topobjdir, 'docs')
+        if not what:
+            what = [os.path.join(self.topsrcdir, 'tools')]
+        outdir = os.path.join(outdir, format)
+
+        generated = []
+        failed = []
+        for path in what:
+            path = os.path.normpath(os.path.abspath(path))
+            docdir = self._find_doc_dir(path)
+
+            if not docdir:
+                failed.append((path, 'could not find docs at this location'))
+                continue
+
+            # find project name to use as a namespace within `outdir`
+            project = self._find_project_name(docdir)
+            savedir = os.path.join(outdir, project)
+
+            args = [
+                'sphinx',
+                '-b', format,
+                docdir,
+                savedir,
+            ]
+            result = sphinx.build_main(args)
+            if result != 0:
+                failed.append((path, 'sphinx return code %d' % result))
+            else:
+                generated.append(savedir)
+
+            index_path = os.path.join(savedir, 'index.html')
+            if not http and auto_open and os.path.isfile(index_path):
+                webbrowser.open(index_path)
+
+        if generated:
+            print('\nGenerated documentation:\n%s\n' % '\n'.join(generated))
+
+        if failed:
+            failed = ['%s: %s' % (f[0], f[1]) for f in failed]
+            return die('failed to generate documentation:\n%s' % '\n'.join(failed))
+
+        if http is not None:
+            host, port = http.split(':', 1)
+            addr = (host, int(port))
+            if len(addr) != 2:
+                return die('invalid address: %s' % http)
+
+            httpd = mozhttpd.MozHttpd(host=addr[0], port=addr[1], docroot=outdir)
+            print('listening on %s:%d' % addr)
+            httpd.start(block=True)
+
+    def _find_project_name(self, path):
+        import imp
+        path = os.path.join(path, 'conf.py')
+        with open(path, 'r') as fh:
+            conf = imp.load_module('doc_conf', fh, path,
+                                   ('.py', 'r', imp.PY_SOURCE))
+
+        return conf.project.replace(' ', '_')
+
+    def _find_doc_dir(self, path):
+        search_dirs = ('doc', 'docs')
+        for d in search_dirs:
+            p = os.path.join(path, d)
+            if os.path.isfile(os.path.join(p, 'conf.py')):
+                return p
+
+
+def die(msg, exit_code=1):
+    msg = '%s: %s' % (sys.argv[0], msg)
+    print(msg, file=sys.stderr)
+    return exit_code