Use compose-spec parser

Signed-off-by: CrazyMax <crazy-max@users.noreply.github.com>

vendor/github.com/compose-spec/compose-go/loader/interpolate.go

@@ -0,0 +1,84 @@
+/*
+   Copyright 2020 The Compose Specification Authors.
+
+   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.
+*/
+
+package loader
+
+import (
+	"strconv"
+	"strings"
+
+	interp "github.com/compose-spec/compose-go/interpolation"
+	"github.com/pkg/errors"
+)
+
+var interpolateTypeCastMapping = map[interp.Path]interp.Cast{
+	servicePath("configs", interp.PathMatchList, "mode"):             toInt,
+	servicePath("secrets", interp.PathMatchList, "mode"):             toInt,
+	servicePath("healthcheck", "retries"):                            toInt,
+	servicePath("healthcheck", "disable"):                            toBoolean,
+	servicePath("deploy", "replicas"):                                toInt,
+	servicePath("deploy", "update_config", "parallelism"):            toInt,
+	servicePath("deploy", "update_config", "max_failure_ratio"):      toFloat,
+	servicePath("deploy", "rollback_config", "parallelism"):          toInt,
+	servicePath("deploy", "rollback_config", "max_failure_ratio"):    toFloat,
+	servicePath("deploy", "restart_policy", "max_attempts"):          toInt,
+	servicePath("deploy", "placement", "max_replicas_per_node"):      toInt,
+	servicePath("ports", interp.PathMatchList, "target"):             toInt,
+	servicePath("ports", interp.PathMatchList, "published"):          toInt,
+	servicePath("ulimits", interp.PathMatchAll):                      toInt,
+	servicePath("ulimits", interp.PathMatchAll, "hard"):              toInt,
+	servicePath("ulimits", interp.PathMatchAll, "soft"):              toInt,
+	servicePath("privileged"):                                        toBoolean,
+	servicePath("read_only"):                                         toBoolean,
+	servicePath("stdin_open"):                                        toBoolean,
+	servicePath("tty"):                                               toBoolean,
+	servicePath("volumes", interp.PathMatchList, "read_only"):        toBoolean,
+	servicePath("volumes", interp.PathMatchList, "volume", "nocopy"): toBoolean,
+	iPath("networks", interp.PathMatchAll, "external"):               toBoolean,
+	iPath("networks", interp.PathMatchAll, "internal"):               toBoolean,
+	iPath("networks", interp.PathMatchAll, "attachable"):             toBoolean,
+	iPath("volumes", interp.PathMatchAll, "external"):                toBoolean,
+	iPath("secrets", interp.PathMatchAll, "external"):                toBoolean,
+	iPath("configs", interp.PathMatchAll, "external"):                toBoolean,
+}
+
+func iPath(parts ...string) interp.Path {
+	return interp.NewPath(parts...)
+}
+
+func servicePath(parts ...string) interp.Path {
+	return iPath(append([]string{"services", interp.PathMatchAll}, parts...)...)
+}
+
+func toInt(value string) (interface{}, error) {
+	return strconv.Atoi(value)
+}
+
+func toFloat(value string) (interface{}, error) {
+	return strconv.ParseFloat(value, 64)
+}
+
+// should match http://yaml.org/type/bool.html
+func toBoolean(value string) (interface{}, error) {
+	switch strings.ToLower(value) {
+	case "y", "yes", "true", "on":
+		return true, nil
+	case "n", "no", "false", "off":
+		return false, nil
+	default:
+		return nil, errors.Errorf("invalid boolean: %s", value)
+	}
+}