Add vendor files for spf13/viper

vendor/github.com/pkg/sftp/request-interfaces.go

@@ -0,0 +1,46 @@
+package sftp
+
+import (
+	"io"
+	"os"
+)
+
+// Interfaces are differentiated based on required returned values.
+// All input arguments are to be pulled from Request (the only arg).
+
+// FileReader should return an io.ReaderAt for the filepath
+// Note in cases of an error, the error text will be sent to the client.
+type FileReader interface {
+	Fileread(*Request) (io.ReaderAt, error)
+}
+
+// FileWriter should return an io.WriterAt for the filepath.
+//
+// The request server code will call Close() on the returned io.WriterAt
+// ojbect if an io.Closer type assertion succeeds.
+// Note in cases of an error, the error text will be sent to the client.
+type FileWriter interface {
+	Filewrite(*Request) (io.WriterAt, error)
+}
+
+// FileCmder should return an error
+// Note in cases of an error, the error text will be sent to the client.
+type FileCmder interface {
+	Filecmd(*Request) error
+}
+
+// FileLister should return an object that fulfils the ListerAt interface
+// Note in cases of an error, the error text will be sent to the client.
+type FileLister interface {
+	Filelist(*Request) (ListerAt, error)
+}
+
+// ListerAt does for file lists what io.ReaderAt does for files.
+// ListAt should return the number of entries copied and an io.EOF
+// error if at end of list. This is testable by comparing how many you
+// copied to how many could be copied (eg. n < len(ls) below).
+// The copy() builtin is best for the copying.
+// Note in cases of an error, the error text will be sent to the client.
+type ListerAt interface {
+	ListAt([]os.FileInfo, int64) (int, error)
+}