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#!/bin/bash -e
#
# This script fetches and rebuilds the "well-known types" protocol buffers.
# To run this you will need protoc and goprotobuf installed;
# see https://github.com/golang/protobuf for instructions.
# You also need Go and Git installed.
PKG=github.com/golang/protobuf/ptypes
UPSTREAM=https://github.com/google/protobuf
UPSTREAM_SUBDIR=src/google/protobuf
PROTO_FILES='
any.proto
duration.proto
empty.proto
struct.proto
timestamp.proto
wrappers.proto
'
function die() {
echo 1>&2 $*
exit 1
}
# Sanity check that the right tools are accessible.
for tool in go git protoc protoc-gen-go; do
q=$(which $tool) || die "didn't find $tool"
echo 1>&2 "$tool: $q"
done
tmpdir=$(mktemp -d -t regen-wkt.XXXXXX)
trap 'rm -rf $tmpdir' EXIT
echo -n 1>&2 "finding package dir... "
pkgdir=$(go list -f '{{.Dir}}' $PKG)
echo 1>&2 $pkgdir
base=$(echo $pkgdir | sed "s,/$PKG\$,,")
echo 1>&2 "base: $base"
cd $base
echo 1>&2 "fetching latest protos... "
git clone -q $UPSTREAM $tmpdir
# Pass 1: build mapping from upstream filename to our filename.
declare -A filename_map
for f in $(cd $PKG && find * -name '*.proto'); do
echo -n 1>&2 "looking for latest version of $f... "
up=$(cd $tmpdir/$UPSTREAM_SUBDIR && find * -name $(basename $f) | grep -v /testdata/)
echo 1>&2 $up
if [ $(echo $up | wc -w) != "1" ]; then
die "not exactly one match"
fi
filename_map[$up]=$f
done
# Pass 2: copy files
for up in "${!filename_map[@]}"; do
f=${filename_map[$up]}
shortname=$(basename $f | sed 's,\.proto$,,')
cp $tmpdir/$UPSTREAM_SUBDIR/$up $PKG/$f
done
# Run protoc once per package.
for dir in $(find $PKG -name '*.proto' | xargs dirname | sort | uniq); do
echo 1>&2 "* $dir"
protoc --go_out=. $dir/*.proto
done
echo 1>&2 "All OK"
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