trezor-firmware/tools/build_protobuf

#!/bin/bash
set -e

cd "$(dirname "$0")"

GENPATH="../trezorlib/messages"
INDEX="$GENPATH/__init__.py"
PROTO_PATH="../../trezor-common/protob"
PROTO_FILES=(types messages storage)
PB2_OUT="pb2"

mkdir -p "$GENPATH"

cat > "$INDEX" << EOF
# Automatically generated by pb2py

EOF

mkdir -p "$PB2_OUT"

for file in "${PROTO_FILES[@]}"; do
    # Compile .proto files to python2 modules using google protobuf library
    protoc --python_out="$PB2_OUT" -I"$PROTO_PATH" "$file.proto"
done

for file in "${PROTO_FILES[@]}"; do
    # Convert google protobuf library to trezor's internal format
    ./pb2py -P "trezorlib.protobuf" -p "$PB2_OUT" -l "$INDEX" "$file" "$GENPATH"
done

rm -rf "$PB2_OUT"