Add scripts/genny.sh

Signed-off-by: Vladimir Popov <vladimir.popov@xored.com>

pkg/tools/metadatahelper/README.md

@@ -10,7 +10,7 @@ gen.go:
 ```go
 package connect
 
-//go:generate genny -in=../../../tools/metadatahelper/meta_data.template.go -out=client_meta_data.gen.go -pkg=connect gen "prefix=client valueType=networkservice.NetworkServiceClient"
+//go:generate bash ../../../../scripts/genny.sh -in=github.com/networkservicemesh/sdk/pkg/tools/metadatahelper/meta_data.template.go -out=client_meta_data.gen.go gen "prefix=client valueType=networkservice.NetworkServiceClient"
 ```
 client_meta_data.gen.go:
 ```go

pkg/tools/metadatahelper/gen.go

@@ -16,4 +16,4 @@
 
 package metadatahelper
 
-//go:generate genny -in=meta_data.template.go -out=int_meta_data.gen.go gen "prefix=Int valueType=int"
+//go:generate bash ../../../scripts/genny.sh -in=github.com/networkservicemesh/sdk/pkg/tools/metadatahelper/meta_data.template.go -out=int_meta_data.gen.go gen "prefix=Int valueType=int"

scripts/genny.sh

@@ -0,0 +1,65 @@
+#!/bin/bash
+
+# Copyright (c) 2020 Doc.ai and/or its affiliates.
+#
+# SPDX-License-Identifier: Apache-2.0
+#
+# 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.
+
+PRG_NAME="$0"
+
+function usage() {
+  echo "${PRG_NAME} -in=package/file.template.go -out=file.gen.go gen \"KeyType=string,int ValueType=string,int\""
+}
+
+######################
+# Parse args
+######################
+
+template=
+out=
+gen=
+
+while [[ $# -ne 0 ]]; do
+  if [[ "$1" == -in=* ]]; then
+    template="${1#"-in="}"
+    shift
+  elif [[ "$1" == -out=* ]]; then
+    out="${1#"-out="}"
+    shift
+  elif [[ "$1" == "gen" ]]; then
+    gen="$2"
+    shift 2
+    if [[ $# -ne 0 ]]; then
+      usage && exit 1
+    fi
+  else
+    usage && exit 1
+  fi
+done
+
+######################
+# Find template file
+######################
+
+package="$(echo "${template}" | sed -E "s/(.*)\/.*/\1/g")"
+root="$(go list -f "{{.Root}}" "${package}")"
+
+module="$(go list -f "{{.Module}}" "${package}" | sed -E "s/([.]*) .*/\1/g")"
+path="${template#${module}}"
+
+######################
+# Call genny
+######################
+
+genny "-in=${root}/${path}" "-out=${out}" "-pkg=${GOPACKAGE}" gen "${gen}"