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48 lines
1.4 KiB
Python
Executable file
48 lines
1.4 KiB
Python
Executable file
#!/usr/bin/env python
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"""
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gn can only run python scripts.
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Generates protobufjs code.
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"""
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import subprocess
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import sys
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import os
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# TODO(ry) Ideally protobufjs output files should be written into
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# target_gen_dir, but its difficult to get this working in a way that parcel can
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# resolve their location. (Parcel does not support NODE_PATH.) Therefore this
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# hack: write the generated msg.pb.js and msg.pb.d.ts outputs into the js/
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# folder, and we check them into the repo. Hopefully this hack can be removed at
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# some point. If msg.proto is changed, commit changes to the generated JS
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# files.
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js_path = os.path.dirname(os.path.realpath(__file__))
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pbjs_path = os.path.join(js_path, "node_modules", "protobufjs", "bin")
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pbjs_bin = os.path.join(pbjs_path, "pbjs")
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pbts_bin = os.path.join(pbjs_path, "pbts")
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msg_pbjs_out = os.path.join(js_path, "msg.pb.js")
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msg_pbts_out = os.path.join(js_path, "msg.pb.d.ts")
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assert os.path.exists(pbjs_bin)
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assert os.path.exists(pbts_bin)
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proto_in = sys.argv[1]
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stamp_file = sys.argv[2]
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def touch(fname):
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if os.path.exists(fname):
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os.utime(fname, None)
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else:
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open(fname, 'a').close()
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subprocess.check_call([
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"node", pbjs_bin, "--target=static-module", "--wrapper=commonjs",
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"--out=" + msg_pbjs_out, proto_in
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])
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assert os.path.exists(msg_pbjs_out)
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subprocess.check_call(
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["node", pbts_bin, "--out=" + msg_pbts_out, msg_pbjs_out])
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assert os.path.exists(msg_pbts_out)
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touch(stamp_file)
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