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importer.go
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/
importer.go
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// Copyright 2017 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package godep
import (
"encoding/json"
"io/ioutil"
"log"
"os"
"path/filepath"
"github.com/golang/dep"
"github.com/golang/dep/internal/gps"
"github.com/golang/dep/internal/importers/base"
"github.com/pkg/errors"
)
const godepPath = "Godeps" + string(os.PathSeparator) + "Godeps.json"
// Importer imports godep configuration into the dep configuration format.
type Importer struct {
*base.Importer
json godepJSON
}
// NewImporter for godep.
func NewImporter(logger *log.Logger, verbose bool, sm gps.SourceManager) *Importer {
return &Importer{Importer: base.NewImporter(logger, verbose, sm)}
}
type godepJSON struct {
Imports []godepPackage `json:"Deps"`
}
type godepPackage struct {
ImportPath string `json:"ImportPath"`
Rev string `json:"Rev"`
Comment string `json:"Comment"`
}
// Name of the importer.
func (g *Importer) Name() string {
return "godep"
}
// HasDepMetadata checks if a directory contains config that the importer can handle.
func (g *Importer) HasDepMetadata(dir string) bool {
y := filepath.Join(dir, godepPath)
if _, err := os.Stat(y); err != nil {
return false
}
return true
}
// Import the config found in the directory.
func (g *Importer) Import(dir string, pr gps.ProjectRoot) (*dep.Manifest, *dep.Lock, error) {
err := g.load(dir)
if err != nil {
return nil, nil, err
}
return g.convert(pr)
}
func (g *Importer) load(projectDir string) error {
g.Logger.Println("Detected godep configuration files...")
j := filepath.Join(projectDir, godepPath)
if g.Verbose {
g.Logger.Printf(" Loading %s", j)
}
jb, err := ioutil.ReadFile(j)
if err != nil {
return errors.Wrapf(err, "unable to read %s", j)
}
err = json.Unmarshal(jb, &g.json)
if err != nil {
return errors.Wrapf(err, "unable to parse %s", j)
}
return nil
}
func (g *Importer) convert(pr gps.ProjectRoot) (*dep.Manifest, *dep.Lock, error) {
g.Logger.Println("Converting from Godeps.json ...")
packages := make([]base.ImportedPackage, 0, len(g.json.Imports))
for _, pkg := range g.json.Imports {
// Validate
if pkg.ImportPath == "" {
err := errors.New("invalid godep configuration, ImportPath is required")
return nil, nil, err
}
if pkg.Rev == "" {
err := errors.New("invalid godep configuration, Rev is required")
return nil, nil, err
}
ip := base.ImportedPackage{
Name: pkg.ImportPath,
LockHint: pkg.Rev,
ConstraintHint: pkg.Comment,
}
packages = append(packages, ip)
}
err := g.ImportPackages(packages, true)
if err != nil {
return nil, nil, err
}
return g.Manifest, g.Lock, nil
}