Added all required dependencies

vendor/github.com/Unknwon/cae/zip/read.go

@@ -0,0 +1,67 @@
+// Copyright 2013 Unknown
+//
+// Licensed under the Apache License, Version 2.0 (the "License"): you may
+// not use this file except in compliance with the License. You may obtain
+// a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+// License for the specific language governing permissions and limitations
+// under the License.
+
+package zip
+
+import (
+	"archive/zip"
+	"os"
+	"strings"
+)
+
+// OpenFile is the generalized open call; most users will use Open
+// instead. It opens the named zip file with specified flag
+// (O_RDONLY etc.) if applicable. If successful,
+// methods on the returned ZipArchive can be used for I/O.
+// If there is an error, it will be of type *PathError.
+func (z *ZipArchive) Open(name string, flag int, perm os.FileMode) error {
+	// Create a new archive if it's specified and not exist.
+	if flag&os.O_CREATE != 0 {
+		f, err := os.Create(name)
+		if err != nil {
+			return err
+		}
+		zw := zip.NewWriter(f)
+		if err = zw.Close(); err != nil {
+			return err
+		}
+	}
+
+	rc, err := zip.OpenReader(name)
+	if err != nil {
+		return err
+	}
+
+	z.ReadCloser = rc
+	z.FileName = name
+	z.Comment = rc.Comment
+	z.NumFiles = len(rc.File)
+	z.Flag = flag
+	z.Permission = perm
+	z.isHasChanged = false
+
+	z.files = make([]*File, z.NumFiles)
+	for i, f := range rc.File {
+		z.files[i] = &File{}
+		z.files[i].FileHeader, err = zip.FileInfoHeader(f.FileInfo())
+		if err != nil {
+			return err
+		}
+		z.files[i].Name = strings.Replace(f.Name, "\\", "/", -1)
+		if f.FileInfo().IsDir() && !strings.HasSuffix(z.files[i].Name, "/") {
+			z.files[i].Name += "/"
+		}
+	}
+	return nil
+}