1 files changed, 132 insertions, 0 deletions
diff --git a/meson/ghwt.py b/meson/ghwt.py
new file mode 100755
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+++ b/meson/ghwt.py
@@ -0,0 +1,132 @@
+#!/usr/bin/env python3
+
+# Copyright 2016 The Meson development team
+
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+
+#     http://www.apache.org/licenses/LICENSE-2.0
+
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+# ghwt - GitHub WrapTool
+#
+# An emergency wraptool(1) replacement downloader that downloads
+# directly from GitHub in case wrapdb.mesonbuild.com is down.
+
+import urllib.request, json, sys, os, shutil, subprocess
+import configparser, hashlib
+
+req_timeout = 600.0
+private_repos = {'meson', 'wrapweb', 'meson-ci'}
+spdir = 'subprojects'
+
+def gh_get(url):
+    r = urllib.request.urlopen(url, timeout=req_timeout)
+    jd = json.loads(r.read().decode('utf-8'))
+    return jd
+
+def list_projects():
+    jd = gh_get('https://api.github.com/orgs/mesonbuild/repos')
+    entries = [entry['name'] for entry in jd]
+    entries = [e for e in entries if e not in private_repos]
+    entries.sort()
+    for i in entries:
+        print(i)
+    return 0
+
+def unpack(sproj, branch):
+    tmpdir = os.path.join(spdir, sproj + '_ghwt')
+    shutil.rmtree(tmpdir, ignore_errors=True)
+    subprocess.check_call(['git', 'clone', '-b', branch, f'https://github.com/mesonbuild/{sproj}.git', tmpdir])
+    usfile = os.path.join(tmpdir, 'upstream.wrap')
+    assert(os.path.isfile(usfile))
+    config = configparser.ConfigParser(interpolation=None)
+    config.read(usfile)
+    outdir = os.path.join(spdir, sproj)
+    if 'directory' in config['wrap-file']:
+        outdir = os.path.join(spdir, config['wrap-file']['directory'])
+    if os.path.isdir(outdir):
+        print(f'Subproject is already there. To update, nuke the {outdir} dir and reinstall.')
+        shutil.rmtree(tmpdir)
+        return 1
+    us_url = config['wrap-file']['source_url']
+    us = urllib.request.urlopen(us_url, timeout=req_timeout).read()
+    h = hashlib.sha256()
+    h.update(us)
+    dig = h.hexdigest()
+    should = config['wrap-file']['source_hash']
+    if dig != should:
+        print('Incorrect hash on download.')
+        print(' expected:', should)
+        print(' obtained:', dig)
+        return 1
+    ofilename = os.path.join(spdir, config['wrap-file']['source_filename'])
+    with open(ofilename, 'wb') as ofile:
+        ofile.write(us)
+    if 'lead_directory_missing' in config['wrap-file']:
+        os.mkdir(outdir)
+        shutil.unpack_archive(ofilename, outdir)
+    else:
+        shutil.unpack_archive(ofilename, spdir)
+        assert(os.path.isdir(outdir))
+    shutil.move(os.path.join(tmpdir, '.git'), outdir)
+    subprocess.check_call(['git', 'reset', '--hard'], cwd=outdir)
+    shutil.rmtree(tmpdir)
+    shutil.rmtree(os.path.join(outdir, '.git'))
+    os.unlink(ofilename)
+
+def install(sproj, requested_branch=None):
+    if not os.path.isdir(spdir):
+        print('Run this in your source root and make sure there is a subprojects directory in it.')
+        return 1
+    blist = gh_get(f'https://api.github.com/repos/mesonbuild/{sproj}/branches')
+    blist = [b['name'] for b in blist]
+    blist = [b for b in blist if b != 'master']
+    blist.sort()
+    branch = blist[-1]
+    if requested_branch is not None:
+        if requested_branch in blist:
+            branch = requested_branch
+        else:
+            print('Could not find user-requested branch', requested_branch)
+            print('Available branches for', sproj, ':')
+            print(blist)
+            return 1
+    print('Using branch', branch)
+    return unpack(sproj, branch)
+
+def print_help():
+    print('Usage:')
+    print(sys.argv[0], 'list')
+    print(sys.argv[0], 'install', 'package_name', '[branch_name]')
+
+def run(args):
+    if not args or args[0] == '-h' or args[0] == '--help':
+        print_help()
+        return 1
+    command = args[0]
+    args = args[1:]
+    if command == 'list':
+        list_projects()
+        return 0
+    elif command == 'install':
+        if len(args) == 1:
+            return install(args[0])
+        elif len(args) == 2:
+            return install(args[0], args[1])
+        else:
+            print_help()
+            return 1
+    else:
+        print('Unknown command')
+        return 1
+
+if __name__ == '__main__':
+    print('This is an emergency wrap downloader. Use only when wrapdb is down.')
+    sys.exit(run(sys.argv[1:]))