Extract files

command.go

@@ -4,6 +4,7 @@ import(
   "log"
   "os"
   "io"
+  "path/filepath"
 )
 
 func cmdHead(config *configCollect) {
@@ -53,6 +54,7 @@ func cmdCpFile(config *configCollect) {
 
   file, err := os.Create(config.Dest)
   if err != nil { log.Fatal(err) }
+  defer file.Close()
   written, err := io.Copy(file, en)
   if err != nil { log.Fatal(err) }
   if uint64(written) != en.Elem.FileSize {
@@ -60,6 +62,25 @@ func cmdCpFile(config *configCollect) {
   }
 }
 
-func cmdCpDir(config *configCollect) {
+type CopyWalker struct { }
-
+func (cw* CopyWalker) onDir(dn *DirNode) {
+  err := os.MkdirAll(filepath.Join(dn.Config.Dest, dn.AbsolutePath), os.ModePerm)
+  if err != nil { log.Fatal(err) }
+  log.Println(dn.String())
+}
+func (cw* CopyWalker) onFile(fn *FileNode) {
+  fn.Parse()
+  file, err := os.Create(filepath.Join(fn.Config.Dest, fn.AbsolutePath))
+  if err != nil { log.Fatal(err) }
+  defer file.Close()
+  written, err := io.Copy(file, fn)
+  if err != nil { log.Fatal(err) }
+  if uint64(written) != fn.Elem.FileSize {
+    log.Fatal(written, "bytes written,", fn.Elem.FileSize, "bytes expected")
+  }
+  log.Println(fn.String())
+}
+func cmdCpDir(config *configCollect) {
+  en := NewEntryNode(config)
+  en.Walk(new(CopyWalker))
 }