feat(vendordep): add vendordep management

- Add vendordep add
- Add vendordep remove
- Add vendordep list
- Refactor downloading

cmd/vendordep/artifactory/artifactory.go

@@ -0,0 +1,3 @@
+package artifactory
+
+const DefaultVendorDepArtifactoryUrl = "https://frcmaven.wpi.edu/artifactory"

cmd/vendordep/artifactory/artifactoryFs.go

@@ -0,0 +1,202 @@
+package artifactory
+
+import (
+	"bytes"
+	"encoding/json"
+	"errors"
+	"io"
+	"io/fs"
+	"net/http"
+	"path"
+	"strings"
+	"time"
+)
+
+type ArtifactoryFS struct {
+	BaseURL string
+	Client *http.Client
+}
+
+func New(baseURL string) ArtifactoryFS {
+	return ArtifactoryFS{
+		BaseURL: strings.TrimRight(baseURL, "/") + "/",
+		Client: &http.Client{Timeout: 10 * time.Second},
+	}
+}
+
+func (afs ArtifactoryFS) GetUrl(name string) string {
+	cleanName := path.Clean(name)
+	return afs.BaseURL + cleanName
+}
+
+func (afs ArtifactoryFS) Open(name string) (fs.File, error) {
+	cleanName := path.Clean(name)
+	url := afs.BaseURL + cleanName
+
+	// Fetch metadata via storage API
+	metaURL := afs.BaseURL + "api/storage/" + cleanName
+	if cleanName == "." {
+		metaURL = afs.BaseURL + "api/storage/"
+	}
+
+	resp, err := afs.Client.Get(metaURL)
+	if err != nil {
+		return nil, err
+	}
+	defer resp.Body.Close()
+
+	if resp.StatusCode == 404 {
+		return nil, fs.ErrNotExist
+	} else if resp.StatusCode != 200 {
+		return nil, errors.New("unexpected status: " + resp.Status)
+	}
+
+	var meta struct {
+		Repo string `json:"repo"`
+		Path string `json:"path"`
+		Children []struct {
+			URI string `json:"uri"`
+			Folder bool `json:"folder"`
+		} `json:"children"`
+		Size string `json:"size"`
+	}
+
+	if err := json.NewDecoder(resp.Body).Decode(&meta); err != nil {
+		return nil, err
+	}
+
+	// It's a directory
+	if len(meta.Children) > 0 {
+		return &artifactoryDir{
+			entries: meta.Children,
+			pos: 0,
+			name: cleanName,
+		}, nil
+	}
+
+	// It's a file
+	contentResp, err := afs.Client.Get(url)
+	if err != nil {
+		return nil, err
+	}
+
+	if contentResp.StatusCode == 404 {
+		return nil, fs.ErrNotExist
+	} else if contentResp.StatusCode != 200 {
+		return nil, errors.New("unexpected status: " + contentResp.Status)
+	}
+
+	data, err := io.ReadAll(contentResp.Body)
+	contentResp.Body.Close()
+	if err != nil {
+		return nil, err
+	}
+
+	return &artifactoryFile{
+		data: bytes.NewReader(data),
+		name: cleanName,
+		size: int64(len(data)),
+	}, nil
+}
+
+type artifactoryFile struct {
+	data *bytes.Reader
+	name string
+	size int64
+}
+
+func (f *artifactoryFile) Stat() (fs.FileInfo, error) {
+	return &fileInfo{
+		name: path.Base(f.name),
+		size: f.size,
+		mode: 0444,
+	}, nil
+}
+
+func (f *artifactoryFile) Read(p []byte) (int, error) {
+	return f.data.Read(p)
+}
+
+func (f *artifactoryFile) Close() error {
+	return nil
+}
+
+type artifactoryDir struct {
+	entries []struct {
+		URI    string `json:"uri"`
+		Folder bool   `json:"folder"`
+	}
+	pos  int
+	name string
+}
+
+func (d *artifactoryDir) Stat() (fs.FileInfo, error) {
+	return &fileInfo{
+		name: path.Base(d.name),
+		mode: fs.ModeDir | 0555,
+	}, nil
+}
+
+func (d *artifactoryDir) Read([]byte) (int, error) {
+	return 0, errors.New("cannot read directory")
+}
+
+func (d *artifactoryDir) Close() error {
+	return nil
+}
+
+func (d *artifactoryDir) ReadDir(n int) ([]fs.DirEntry, error) {
+	if d.pos >= len(d.entries) && n > 0 {
+		return nil, io.EOF
+	}
+
+	var entries []fs.DirEntry
+	max := len(d.entries)
+	if n > 0 && d.pos+n < max {
+		max = d.pos + n
+	}
+
+	for ; d.pos < max; d.pos++ {
+		e := d.entries[d.pos]
+		entries = append(entries, &dirEntry{
+			name: strings.TrimPrefix(e.URI, "/"),
+			isDir: e.Folder,
+		})
+	}
+
+	return entries, nil
+}
+
+type fileInfo struct {
+	name string
+	size int64
+	mode fs.FileMode
+}
+
+func (fi *fileInfo) Name() string { return fi.name }
+func (fi *fileInfo) Size() int64 { return fi.size }
+func (fi *fileInfo) Mode() fs.FileMode { return fi.mode }
+func (fi *fileInfo) ModTime() time.Time { return time.Time{} }
+func (fi *fileInfo) IsDir() bool { return fi.mode.IsDir() }
+func (fi *fileInfo) Sys() any { return nil }
+
+type dirEntry struct {
+	name  string
+	isDir bool
+}
+
+func (de *dirEntry) Name() string { return de.name }
+func (de *dirEntry) IsDir() bool { return de.isDir }
+func (de *dirEntry) Type() fs.FileMode {
+	if de.isDir {
+		return fs.ModeDir
+	} else {
+		return 0
+	}
+}
+func (de *dirEntry) Info() (fs.FileInfo, error) {
+	return &fileInfo{
+		name: de.name,
+		mode: de.Type(),
+	}, nil
+}