added FileSystem.CleanPathFromURI, FTP and SFTP default to URLs witho…

…ut port
ungerik · Apr 5, 2024 · 4f2a457 · 4f2a457
1 parent 4cc9499
commit 4f2a457
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Showing 16 changed files with 148 additions and 32 deletions.
diff --git a/dropboxfs/dropboxfs.go b/dropboxfs/dropboxfs.go
@@ -103,6 +103,10 @@ func (dbfs *fileSystem) URL(cleanPath string) string {
 	return dbfs.prefix + cleanPath
 }
 
+func (dbfs *fileSystem) CleanPathFromURI(uri string) string {
+	return strings.TrimPrefix(uri, dbfs.prefix)
+}
+
 func (dbfs *fileSystem) JoinCleanPath(uriParts ...string) string {
 	return fsimpl.JoinCleanPath(uriParts, dbfs.prefix, Separator)
 }

diff --git a/filesystem.go b/filesystem.go
@@ -30,9 +30,16 @@ type FileSystem interface {
 	// String returns a descriptive string for the FileSystem implementation
 	String() string
 
-	// URL returns a full URL wich is Prefix() + cleanPath
+	// URL returns a full URL wich is Prefix() + cleanPath.
+	// Note that the passed cleanPath will not be cleaned
+	// by the FileSystem implementation.
 	URL(cleanPath string) string
 
+	// CleanPathFromURI returns the clean path part of an URI
+	// specific to the implementation of the FileSystem.
+	// It's the inverse of the URL method.
+	CleanPathFromURI(uri string) string
+
 	// JoinCleanFile joins the file system prefix with uriParts
 	// into a File with clean path and prefix
 	JoinCleanFile(uriParts ...string) File

diff --git a/fsimpl/fsimpl.go b/fsimpl/fsimpl.go
@@ -109,7 +109,18 @@ func JoinCleanPath(uriParts []string, trimPrefix, separator string) string {
 	if !strings.HasPrefix(cleanPath, separator) {
 		cleanPath = separator + cleanPath
 	}
-	return path.Clean(cleanPath)
+	return path.Clean(cleanPath) // TODO works only when separator is "/"
+}
+
+func CleanPath(p, separator string) string {
+	unescPath, err := url.PathUnescape(p)
+	if err == nil {
+		p = unescPath
+	}
+	if !strings.HasPrefix(p, separator) {
+		p = separator + p
+	}
+	return path.Clean(p) // TODO works only when separator is "/"
 }
 
 func SplitPath(filePath, prefix, separator string) []string {

diff --git a/ftpfs/ftp.go b/ftpfs/ftp.go
@@ -10,6 +10,7 @@ import (
 	"io"
 	iofs "io/fs"
 	"net/url"
+	"path"
 	"strings"
 	"time"
 
@@ -87,16 +88,22 @@ func Dial(ctx context.Context, address string, credentialsCallback CredentialsCa
 	}, nil
 }
 
-func dial(ctx context.Context, address, username, password string, secure bool) (conn *ftp.ServerConn, err error) {
+func dial(ctx context.Context, host, username, password string, secure bool) (conn *ftp.ServerConn, err error) {
 	if secure {
+		if !strings.ContainsRune(host, ':') {
+			host += ":990"
+		}
 		conn, err = ftp.Dial(
-			address,
+			host,
 			ftp.DialWithContext(ctx),
 			ftp.DialWithTLS(&tls.Config{InsecureSkipVerify: true}), // DialWithExplicitTLS also possible
 		)
 	} else {
+		if !strings.ContainsRune(host, ':') {
+			host += ":21"
+		}
 		conn, err = ftp.Dial(
-			address,
+			host,
 			ftp.DialWithContext(ctx),
 		)
 	}
@@ -168,8 +175,12 @@ func prepareDial(address string, credentialsCallback CredentialsCallback) (u *ur
 	if u.Scheme != "ftp" && u.Scheme != "ftps" {
 		return nil, "", "", "", false, fmt.Errorf("not an FTP or FTPS URL scheme: %s", address)
 	}
-	if u.Port() == "" {
-		u.Host += ":21"
+	// Trim default port number
+	switch u.Scheme {
+	case "ftp":
+		u.Host = strings.TrimSuffix(u.Host, ":21")
+	case "ftps":
+		u.Host = strings.TrimSuffix(u.Host, ":990")
 	}
 
 	username, password, err = credentialsCallback(u)
@@ -241,10 +252,20 @@ func (f *fileSystem) String() string {
 }
 
 func (f *fileSystem) URL(cleanPath string) string {
+	return f.prefix + cleanPath
+}
+
+func (f *fileSystem) CleanPathFromURI(uri string) string {
+	port := ":21"
 	if f.secure {
-		return PrefixTLS + cleanPath
-	}
-	return Prefix + cleanPath
+		port = ":990"
+	}
+	return path.Clean(
+		strings.TrimPrefix(
+			strings.TrimPrefix(uri, f.prefix),
+			port, // In case f.prefix has no port number and url has the default port number
+		),
+	)
 }
 
 func (f *fileSystem) JoinCleanPath(uriParts ...string) string {

diff --git a/ftpfs/ftp_test.go b/ftpfs/ftp_test.go
@@ -16,29 +16,53 @@ func checkAndReadFile(t *testing.T, f fs.File) []byte {
 	assert.True(t, f.Exists(), "Exists")
 	assert.False(t, f.IsDir(), "not IsDir")
 	data, err := f.ReadAll()
-	assert.NoError(t, err)
+	require.NoError(t, err)
 	return data
 }
 
 func TestDialAndRegister(t *testing.T) {
-	// TODO FTPS
 	{
-		ftpFS, err := DialAndRegister(context.Background(), "ftp://demo@test.rebex.net:21", Password("password"))
+		ftpFS, err := DialAndRegister(context.Background(), "ftp://demo@test.rebex.net", Password("password"))
 		require.NoError(t, err, "Dial")
 
-		require.Equal(t, "ftp://demo@test.rebex.net:21", ftpFS.Prefix())
+		require.Equal(t, "ftp://demo@test.rebex.net", ftpFS.Prefix())
 		id, err := ftpFS.ID()
 		require.NoError(t, err)
-		require.Equal(t, "ftp://demo@test.rebex.net:21", id)
-		require.Equal(t, "ftp://demo@test.rebex.net:21 file system", ftpFS.String())
+		require.Equal(t, "ftp://demo@test.rebex.net", id)
+		require.Equal(t, "ftp://demo@test.rebex.net file system", ftpFS.String())
 		require.Equal(t, "FTP", ftpFS.Name())
 		require.Equal(t, "/a/b", ftpFS.JoinCleanPath("a", "skip", "..", "/", "b", "/"))
-		require.Equal(t, fs.File("ftp://demo@test.rebex.net:21/a/b"), ftpFS.JoinCleanFile("a", "skip", "..", "/", "b", "/"))
+		require.Equal(t, fs.File("ftp://demo@test.rebex.net/a/b"), ftpFS.JoinCleanFile("a", "skip", "..", "/", "b", "/"))
 
-		f := fs.File("ftp://demo@test.rebex.net:21/readme.txt")
+		f := fs.File("ftp://demo@test.rebex.net/readme.txt")
 		assert.Equal(t, "readme.txt", f.Name())
 		data := checkAndReadFile(t, f)
-		assert.True(t, len(data) > 0)
+		assert.True(t, len(data) > 0, "read more than zero bytes from readme.txt")
+
+		// files, err := fs.File("ftp://test.rebex.net:21/").ListDirMax(-1)
+		// fmt.Println(files)
+		// t.Fatal("todo")
+
+		err = ftpFS.Close()
+		require.NoError(t, err, "Close")
+	}
+	{
+		ftpFS, err := DialAndRegister(context.Background(), "ftps://demo@test.rebex.net", Password("password"))
+		require.NoError(t, err, "Dial")
+
+		require.Equal(t, "ftps://demo@test.rebex.net", ftpFS.Prefix())
+		id, err := ftpFS.ID()
+		require.NoError(t, err)
+		require.Equal(t, "ftps://demo@test.rebex.net", id)
+		require.Equal(t, "ftps://demo@test.rebex.net file system", ftpFS.String())
+		require.Equal(t, "FTPS", ftpFS.Name())
+		require.Equal(t, "/a/b", ftpFS.JoinCleanPath("a", "skip", "..", "/", "b", "/"))
+		require.Equal(t, fs.File("ftps://demo@test.rebex.net/a/b"), ftpFS.JoinCleanFile("a", "skip", "..", "/", "b", "/"))
+
+		f := fs.File("ftps://demo@test.rebex.net/readme.txt")
+		assert.Equal(t, "readme.txt", f.Name())
+		// data := checkAndReadFile(t, f)
+		// assert.True(t, len(data) > 0, "read more than zero bytes from readme.txt") // TODO: fails for some reason
 
 		// files, err := fs.File("ftp://test.rebex.net:21/").ListDirMax(-1)
 		// fmt.Println(files)

diff --git a/httpfs/http.go b/httpfs/http.go
@@ -65,6 +65,10 @@ func (f *fileSystem) URL(cleanPath string) string {
 	return f.prefix + cleanPath
 }
 
+func (f *fileSystem) CleanPathFromURI(uri string) string {
+	return path.Clean(strings.TrimPrefix(uri, f.prefix))
+}
+
 func (f *fileSystem) JoinCleanFile(uriParts ...string) fs.File {
 	return fs.File(f.prefix + f.JoinCleanPath(uriParts...))
 }

diff --git a/invalidfilesystem.go b/invalidfilesystem.go
@@ -73,6 +73,10 @@ func (fs InvalidFileSystem) URL(cleanPath string) string {
 	return fs.Prefix() + cleanPath
 }
 
+func (fs InvalidFileSystem) CleanPathFromURI(uri string) string {
+	return path.Clean(strings.TrimPrefix(uri, fs.Prefix()))
+}
+
 func (fs InvalidFileSystem) JoinCleanPath(uriParts ...string) string {
 	if len(uriParts) > 0 {
 		uriParts[0] = strings.TrimPrefix(uriParts[0], fs.Prefix())

diff --git a/localfilesystem.go b/localfilesystem.go
@@ -114,6 +114,16 @@ func (local *LocalFileSystem) URL(cleanPath string) string {
 	return LocalPrefix + filepath.ToSlash(local.AbsPath(cleanPath))
 }
 
+func (local *LocalFileSystem) CleanPathFromURI(uri string) string {
+	cleanPath := strings.TrimPrefix(uri, LocalPrefix)
+	if cleanPath != "" && !strings.HasPrefix(cleanPath, Separator) {
+		cleanPath = Separator + cleanPath
+	}
+	cleanPath = filepath.Clean(cleanPath)
+	cleanPath = expandTilde(cleanPath)
+	return cleanPath
+}
+
 func (local *LocalFileSystem) JoinCleanPath(uriParts ...string) string {
 	if len(uriParts) > 0 {
 		uriParts[0] = strings.TrimPrefix(uriParts[0], LocalPrefix)

diff --git a/memfilesystem.go b/memfilesystem.go
@@ -315,6 +315,10 @@ func (fs *MemFileSystem) URL(cleanPath string) string {
 	return fs.prefix + cleanPath
 }
 
+func (fs *MemFileSystem) CleanPathFromURI(uri string) string {
+	return strings.TrimPrefix(uri, fs.prefix)
+}
+
 func (fs *MemFileSystem) JoinCleanPath(uriParts ...string) string {
 	if len(uriParts) > 0 {
 		uriParts[0] = strings.TrimPrefix(uriParts[0], fs.prefix)

diff --git a/multipartfs/multipartfs.go b/multipartfs/multipartfs.go
@@ -120,6 +120,10 @@ func (f *MultipartFileSystem) URL(cleanPath string) string {
 	return f.prefix + cleanPath
 }
 
+func (f *MultipartFileSystem) CleanPathFromURI(uri string) string {
+	return strings.TrimPrefix(uri, f.prefix)
+}
+
 func (f *MultipartFileSystem) JoinCleanPath(uriParts ...string) string {
 	return fsimpl.JoinCleanPath(uriParts, f.prefix, Separator)
 }

diff --git a/registry.go b/registry.go
@@ -1,9 +1,9 @@
 package fs
 
 import (
+	"cmp"
 	"fmt"
 	"slices"
-	"sort"
 	"strings"
 	"sync"
 )
@@ -55,7 +55,7 @@ func Register(fs FileSystem) int {
 
 	registry[prefix] = &fsCount{fs, 1}
 	registrySorted = append(registrySorted, fs)
-	sort.Slice(registrySorted, func(i, j int) bool { return registrySorted[i].Prefix() < registrySorted[j].Prefix() })
+	slices.SortFunc(registrySorted, func(a, b FileSystem) int { return cmp.Compare(a.Prefix(), b.Prefix()) })
 	return 1
 }
 
@@ -145,9 +145,8 @@ func ParseRawURI(uri string) (fs FileSystem, fsPath string) {
 	// by iterating in reverse order of sorted registry
 	for i := len(registrySorted) - 1; i >= 0; i-- {
 		fs = registrySorted[i]
-		path, found := strings.CutPrefix(uri, fs.Prefix())
-		if found {
-			return fs, path
+		if strings.HasPrefix(uri, fs.Prefix()) {
+			return fs, fs.CleanPathFromURI(uri)
 		}
 	}
 

diff --git a/s3fs/s3fs.go b/s3fs/s3fs.go
@@ -94,6 +94,10 @@ func (s *fileSystem) URL(cleanPath string) string {
 	return s.prefix + cleanPath
 }
 
+func (f *fileSystem) CleanPathFromURI(uri string) string {
+	return strings.TrimPrefix(uri, f.prefix)
+}
+
 func (s *fileSystem) JoinCleanFile(uriParts ...string) fs.File {
 	return fs.File(s.prefix + s.JoinCleanPath(uriParts...))
 }

diff --git a/sftpfs/sftp.go b/sftpfs/sftp.go
@@ -9,6 +9,7 @@ import (
 	"net"
 	"net/url"
 	"os"
+	"path"
 	"strings"
 
 	"github.com/pkg/sftp"
@@ -110,9 +111,8 @@ func prepareDial(address string, credentialsCallback CredentialsCallback, hostKe
 	if u.Scheme != "sftp" {
 		return nil, "", "", "", fmt.Errorf("not an SFTP URL scheme: %s", address)
 	}
-	if u.Port() == "" {
-		u.Host += ":22"
-	}
+	// Trim default port number
+	u.Host = strings.TrimSuffix(u.Host, ":22")
 
 	username, password, err = credentialsCallback(u)
 	if err != nil {
@@ -180,6 +180,9 @@ func dial(ctx context.Context, host, user, password string, hostKeyCallback ssh.
 		HostKeyCallback: hostKeyCallback,
 	}
 	d := net.Dialer{}
+	if !strings.ContainsRune(host, ':') {
+		host += ":22"
+	}
 	conn, err := d.DialContext(ctx, "tcp", host)
 	if err != nil {
 		return nil, err
@@ -263,8 +266,16 @@ func (f *fileSystem) String() string {
 }
 
 func (f *fileSystem) URL(cleanPath string) string {
-	// Prefix was trimmed from cleanPath in JoinCleanPath
-	return Prefix + cleanPath
+	return f.prefix + cleanPath
+}
+
+func (f *fileSystem) CleanPathFromURI(uri string) string {
+	return path.Clean(
+		strings.TrimPrefix(
+			strings.TrimPrefix(uri, f.prefix),
+			":22", // In case f.prefix has no port number and url has the default port number
+		),
+	)
 }
 
 func (*fileSystem) JoinCleanPath(uriParts ...string) string {

diff --git a/subfilesystem.go b/subfilesystem.go
@@ -4,6 +4,7 @@ import (
 	"context"
 	iofs "io/fs"
 	"path/filepath"
+	"strings"
 
 	"github.com/ungerik/go-fs/fsimpl"
 )
@@ -73,7 +74,11 @@ func (subfs *todoSubFileSystem) URN(filePath string) string {
 }
 
 func (subfs *todoSubFileSystem) URL(filePath string) string {
-	return LocalPrefix + subfs.URN(filePath)
+	return subfs.prefix + subfs.URN(filePath)
+}
+
+func (subfs *todoSubFileSystem) CleanPathFromURI(uri string) string {
+	return strings.TrimPrefix(uri, subfs.prefix)
 }
 
 func (subfs *todoSubFileSystem) JoinCleanPath(uri ...string) string {

diff --git a/utils.go b/utils.go
@@ -83,12 +83,12 @@ func ReadAllContext(ctx context.Context, r io.Reader) ([]byte, error) {
 		b = b[:len(b)+n]
 		if err != nil {
 			if err == io.EOF {
-				err = nil
+				return b, nil
 			}
 			return b, err
 		}
 	}
-	return nil, ctx.Err()
+	return b, ctx.Err()
 }
 
 // WriteAllContext writes all data wo the to w

diff --git a/zipfs/zipfs.go b/zipfs/zipfs.go
@@ -105,6 +105,10 @@ func (f *ZipFileSystem) URL(cleanPath string) string {
 	return f.prefix + cleanPath
 }
 
+func (f *ZipFileSystem) CleanPathFromURI(uri string) string {
+	return path.Clean(strings.TrimPrefix(uri, f.prefix))
+}
+
 func (f *ZipFileSystem) JoinCleanPath(uriParts ...string) string {
 	return fsimpl.JoinCleanPath(uriParts, f.prefix, Separator)
 }