/* 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 transform import ( "fmt" "strings" "github.com/compose-spec/compose-go/v2/tree" ) func transformDeviceMapping(data any, p tree.Path, ignoreParseError bool) (any, error) { switch v := data.(type) { case map[string]any: return v, nil case string: src := "" dst := "" permissions := "rwm" arr := strings.Split(v, ":") switch len(arr) { case 3: permissions = arr[2] fallthrough case 2: dst = arr[1] fallthrough case 1: src = arr[0] default: if !ignoreParseError { return nil, fmt.Errorf("confusing device mapping, please use long syntax: %s", v) } } if dst == "" { dst = src } return map[string]any{ "source": src, "target": dst, "permissions": permissions, }, nil default: return data, fmt.Errorf("%s: invalid type %T for service volume mount", p, v) } }