Added all required dependencies

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

@@ -0,0 +1,108 @@
+// 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 cae implements PHP-like Compression and Archive Extensions.
+package cae
+
+import (
+	"io"
+	"os"
+	"strings"
+)
+
+// A Streamer describes an streamable archive object.
+type Streamer interface {
+	StreamFile(string, os.FileInfo, []byte) error
+	StreamReader(string, os.FileInfo, io.Reader) error
+	Close() error
+}
+
+// A HookFunc represents a middleware for packing and extracting archive.
+type HookFunc func(string, os.FileInfo) error
+
+// HasPrefix returns true if name has any string in given slice as prefix.
+func HasPrefix(name string, prefixes []string) bool {
+	for _, prefix := range prefixes {
+		if strings.HasPrefix(name, prefix) {
+			return true
+		}
+	}
+	return false
+}
+
+// IsEntry returns true if name equals to any string in given slice.
+func IsEntry(name string, entries []string) bool {
+	for _, e := range entries {
+		if e == name {
+			return true
+		}
+	}
+	return false
+}
+
+// IsFilter returns true if given name matches any of global filter rule.
+func IsFilter(name string) bool {
+	if strings.Contains(name, ".DS_Store") {
+		return true
+	}
+	return false
+}
+
+// IsExist returns true if given path is a file or directory.
+func IsExist(path string) bool {
+	_, err := os.Stat(path)
+	return err == nil || os.IsExist(err)
+}
+
+// Copy copies file from source to target path.
+func Copy(dest, src string) error {
+	// Gather file information to set back later.
+	si, err := os.Lstat(src)
+	if err != nil {
+		return err
+	}
+
+	// Handle symbolic link.
+	if si.Mode()&os.ModeSymlink != 0 {
+		target, err := os.Readlink(src)
+		if err != nil {
+			return err
+		}
+		// NOTE: os.Chmod and os.Chtimes don't recoganize symbolic link,
+		// which will lead "no such file or directory" error.
+		return os.Symlink(target, dest)
+	}
+
+	sr, err := os.Open(src)
+	if err != nil {
+		return err
+	}
+	defer sr.Close()
+
+	dw, err := os.Create(dest)
+	if err != nil {
+		return err
+	}
+	defer dw.Close()
+
+	if _, err = io.Copy(dw, sr); err != nil {
+		return err
+	}
+
+	// Set back file information.
+	if err = os.Chtimes(dest, si.ModTime(), si.ModTime()); err != nil {
+		return err
+	}
+	return os.Chmod(dest, si.Mode())
+}