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// Copyright 2022 The Gitea Authors. All rights reserved.
// Use of this source code is governed by a MIT-style
// license that can be found in the LICENSE file.
package vagrant
import (
"archive/tar"
"compress/gzip"
"io"
"strings"
"code.gitea.io/gitea/modules/json"
"code.gitea.io/gitea/modules/validation"
)
const (
PropertyProvider = "vagrant.provider"
)
// Metadata represents the metadata of a Vagrant package
type Metadata struct {
Author string `json:"author,omitempty"`
Description string `json:"description,omitempty"`
ProjectURL string `json:"project_url,omitempty"`
RepositoryURL string `json:"repository_url,omitempty"`
}
// ParseMetadataFromBox parses the metadata of a box file
func ParseMetadataFromBox(r io.Reader) (*Metadata, error) {
gzr, err := gzip.NewReader(r)
if err != nil {
return nil, err
}
defer gzr.Close()
tr := tar.NewReader(gzr)
for {
hd, err := tr.Next()
if err == io.EOF {
break
}
if err != nil {
return nil, err
}
if hd.Typeflag != tar.TypeReg {
continue
}
if hd.Name == "info.json" {
return ParseInfoFile(tr)
}
}
return &Metadata{}, nil
}
// ParseInfoFile parses a info.json file to retrieve the metadata of a Vagrant package
func ParseInfoFile(r io.Reader) (*Metadata, error) {
var values map[string]string
if err := json.NewDecoder(r).Decode(&values); err != nil {
return nil, err
}
m := &Metadata{}
// There is no defined format for this file, just try the common keys
for k, v := range values {
switch strings.ToLower(k) {
case "description":
fallthrough
case "short_description":
m.Description = v
case "website":
fallthrough
case "homepage":
fallthrough
case "url":
if validation.IsValidURL(v) {
m.ProjectURL = v
}
case "repository":
fallthrough
case "source":
if validation.IsValidURL(v) {
m.RepositoryURL = v
}
case "author":
fallthrough
case "authors":
m.Author = v
}
}
return m, nil
}
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