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https://github.com/TECHNOFAB11/jsonnet-bundler.git
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6e3e7b2fdd
Packages are unique anyways so it makes sense to use a map to avoid having duplicates. For compatibility reasons custom json (un)marshallers hide this change from the end user
86 lines
1.8 KiB
Go
86 lines
1.8 KiB
Go
// Copyright 2018 jsonnet-bundler authors
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package jsonnetfile
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import (
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"encoding/json"
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"io/ioutil"
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"os"
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"path/filepath"
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"github.com/pkg/errors"
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"github.com/jsonnet-bundler/jsonnet-bundler/spec"
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)
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const (
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File = "jsonnetfile.json"
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LockFile = "jsonnetfile.lock.json"
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)
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var ErrNoFile = errors.New("no jsonnetfile")
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func Choose(dir string) (string, bool, error) {
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jsonnetfileLock := filepath.Join(dir, LockFile)
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jsonnetfile := filepath.Join(dir, File)
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lockExists, err := Exists(jsonnetfileLock)
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if err != nil {
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return "", false, err
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}
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if lockExists {
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return jsonnetfileLock, true, nil
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}
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fileExists, err := Exists(jsonnetfile)
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if err != nil {
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return "", false, err
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}
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if fileExists {
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return jsonnetfile, false, nil
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}
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return "", false, ErrNoFile
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}
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func Load(filepath string) (spec.JsonnetFile, error) {
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m := spec.JsonnetFile{}
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bytes, err := ioutil.ReadFile(filepath)
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if err != nil {
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return m, err
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}
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if err := json.Unmarshal(bytes, &m); err != nil {
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return m, errors.Wrap(err, "failed to unmarshal file")
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}
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if m.Dependencies == nil {
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m.Dependencies = make(map[string]spec.Dependency)
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}
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return m, nil
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}
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func Exists(path string) (bool, error) {
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_, err := os.Stat(path)
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if os.IsNotExist(err) {
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return false, nil
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}
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if err != nil {
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return false, err
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}
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return true, nil
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}
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