add basic/imcomplete windows support

node_windows.go

@@ -1,9 +1,77 @@
 package restic
 
-import "os"
+import (
+	"fmt"
+	"os"
 
-func (node *Node) fill_extra(path string, fi os.FileInfo) error {
-	return nil
+	"github.com/restic/restic/debug"
+
+	"syscall"
+	"time"
+)
+
+func (node *Node) fill_extra(path string, fi os.FileInfo) (err error) {
+	stat, ok := fi.Sys().(*syscall.Win32FileAttributeData)
+	if !ok {
+		return
+	}
+
+	//we need access to os.File filedescriptor!!!!
+
+	//syscall.ByHandleFileInformation {
+	//    FileAttributes     uint32
+	//    CreationTime       Filetime
+	//    LastAccessTime     Filetime
+	//    LastWriteTime      Filetime
+	//    VolumeSerialNumber uint32         -->   node.Device
+	//    FileSizeHigh       uint32         -->  can be used to calculate node.Size
+	//    FileSizeLow        uint32
+	//    NumberOfLinks      uint32         --> node.Links
+	//    FileIndexHigh      uint32
+	//    FileIndexLow       uint32         -->   Node.Inode= uint64(FileIndexLow) | uint64(FileIndexHigh)<<32
+	//}
+	//
+	//file,err:=os.Open(path)
+	//if err!=nil{
+	//	return err
+	//}
+	//byhandlefi := &syscall.ByHandleFileInformation{}
+	//
+	//err=syscall.GetFileInformationByHandle(syscall.Handle(file.Fd()), byhandlefi)
+	//if err!=nil{
+	//	return err
+	//}
+
+	node.ChangeTime = time.Unix(0, stat.LastWriteTime.Nanoseconds())
+	node.AccessTime = time.Unix(0, stat.LastAccessTime.Nanoseconds())
+
+	//Todo GetSecurityInfo
+	//node.UID
+	//node.GID
+	//node.User
+	//node.Inode = uint64(byhandlefi.FileIndexLow) | uint64(byhandlefi.FileIndexHigh)<<32
+
+	switch node.Type {
+	case "file":
+		node.Size = uint64(fi.Size())
+		//node.Links = uint64(byhandlefi.NumberOfLinks)
+	case "dir":
+		// nothing to do
+	case "symlink":
+		node.LinkTarget, err = os.Readlink(path)
+	case "dev":
+		// nothing to do
+	case "chardev":
+		// nothing to do
+	case "fifo":
+		// nothing to do
+	case "socket":
+		// nothing to do
+	default:
+		panic(fmt.Sprintf("invalid node type %q", node.Type))
+	}
+
+	return err
 }
 
 func (node *Node) createDevAt(path string) error {
@@ -19,5 +87,50 @@ func (node *Node) createFifoAt(path string) error {
 }
 
 func (node *Node) isNewer(path string, fi os.FileInfo) bool {
+	// if this node has a type other than "file", treat as if content has changed
+	if node.Type != "file" {
+		debug.Log("node.isNewer", "node %v is newer: not file", path)
+		return true
+	}
+
+	// if the name or type has changed, this is surely something different
+	tpe := nodeTypeFromFileInfo(path, fi)
+	if node.Name != fi.Name() || node.Type != tpe {
+		debug.Log("node.isNewer", "node %v is newer: name or type changed", path)
+		return false
+	}
+
+	stat := fi.Sys().(*syscall.Win32FileAttributeData)
+
+	changeTime := time.Unix(0, stat.LastWriteTime.Nanoseconds())
+
+	//same here
+	//file,err:=os.Open(path)
+	//if err!=nil{
+	//	return err
+	//}
+	//byhandlefi := &syscall.ByHandleFileInformation{}
+	//
+	//err=syscall.GetFileInformationByHandle(syscall.Handle(file.Fd()), byhandlefi)
+	//if err!=nil{
+	//	return err
+	//}
+
+	//inode := uint64(byhandlefi.FileIndexLow) | uint64(byhandlefi.FileIndexHigh)<<32
+
+	//we can use latter
+	size := uint64(fi.Size())
+
+	// if timestamps or inodes differ, content has changed
+	if node.ModTime != fi.ModTime() ||
+		node.ChangeTime != changeTime ||
+		//node.Inode != inode ||
+		node.Size != size {
+		debug.Log("node.isNewer", "node %v is newer: timestamp or inode changed", path)
+		return false
+	}
+
+	// otherwise the node is assumed to have the same content
+	debug.Log("node.isNewer", "node %v is not newer", path)
 	return false
 }