Dump: add output format tar and output to stdout (#10376)

* Dump: Use mholt/archive/v3 to support tar including many compressions

Signed-off-by: Philipp Homann <homann.philipp@googlemail.com>

* Dump: Allow dump output to stdout

Signed-off-by: Philipp Homann <homann.philipp@googlemail.com>

* Dump: Fixed bug present since #6677 where SessionConfig.Provider is never "file"

Signed-off-by: Philipp Homann <homann.philipp@googlemail.com>

* Dump: never pack RepoRootPath, LFS.ContentPath and LogRootPath when they are below AppDataPath

Signed-off-by: Philipp Homann <homann.philipp@googlemail.com>

* Dump: also dump LFS (fixes #10058)

Signed-off-by: Philipp Homann <homann.philipp@googlemail.com>

* Dump: never dump CustomPath if CustomPath is a subdir of or equal to AppDataPath (fixes #10365)

Signed-off-by: Philipp Homann <homann.philipp@googlemail.com>

* Use log.Info instead of fmt.Fprintf

Signed-off-by: Philipp Homann <homann.philipp@googlemail.com>

* import ordering

* make fmt

Co-authored-by: zeripath <art27@cantab.net>
Co-authored-by: techknowlogick <techknowlogick@gitea.io>
Co-authored-by: Matti R <matti@mdranta.net>

9 files changed, 0 insertions, 1136 deletions

diff --git a/vendor/github.com/unknwon/cae/.gitignore b/vendor/github.com/unknwon/cae/.gitignore
deleted file mode 100644
index b6c97b1593..0000000000
--- a/vendor/github.com/unknwon/cae/.gitignore
+++ /dev/null
@@ -1,25 +0,0 @@
-# Compiled Object files, Static and Dynamic libs (Shared Objects)
-*.o
-*.a
-*.so
-
-# Folders
-_obj
-_test
-.idea
-
-# Architecture specific extensions/prefixes
-*.[568vq]
-[568vq].out
-
-*.cgo1.go
-*.cgo2.c
-_cgo_defun.c
-_cgo_gotypes.go
-_cgo_export.*
-
-_testmain.go
-
-cae.iml
-*.exe
-.DS_Store
diff --git a/vendor/github.com/unknwon/cae/LICENSE b/vendor/github.com/unknwon/cae/LICENSE
deleted file mode 100644
index 8405e89a0b..0000000000
--- a/vendor/github.com/unknwon/cae/LICENSE
+++ /dev/null
@@ -1,191 +0,0 @@
-Apache License
-Version 2.0, January 2004
-http://www.apache.org/licenses/
-
-TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
-
-1. Definitions.
-
-"License" shall mean the terms and conditions for use, reproduction, and
-distribution as defined by Sections 1 through 9 of this document.
-
-"Licensor" shall mean the copyright owner or entity authorized by the copyright
-owner that is granting the License.
-
-"Legal Entity" shall mean the union of the acting entity and all other entities
-that control, are controlled by, or are under common control with that entity.
-For the purposes of this definition, "control" means (i) the power, direct or
-indirect, to cause the direction or management of such entity, whether by
-contract or otherwise, or (ii) ownership of fifty percent (50%) or more of the
-outstanding shares, or (iii) beneficial ownership of such entity.
-
-"You" (or "Your") shall mean an individual or Legal Entity exercising
-permissions granted by this License.
-
-"Source" form shall mean the preferred form for making modifications, including
-but not limited to software source code, documentation source, and configuration
-files.
-
-"Object" form shall mean any form resulting from mechanical transformation or
-translation of a Source form, including but not limited to compiled object code,
-generated documentation, and conversions to other media types.
-
-"Work" shall mean the work of authorship, whether in Source or Object form, made
-available under the License, as indicated by a copyright notice that is included
-in or attached to the work (an example is provided in the Appendix below).
-
-"Derivative Works" shall mean any work, whether in Source or Object form, that
-is based on (or derived from) the Work and for which the editorial revisions,
-annotations, elaborations, or other modifications represent, as a whole, an
-original work of authorship. For the purposes of this License, Derivative Works
-shall not include works that remain separable from, or merely link (or bind by
-name) to the interfaces of, the Work and Derivative Works thereof.
-
-"Contribution" shall mean any work of authorship, including the original version
-of the Work and any modifications or additions to that Work or Derivative Works
-thereof, that is intentionally submitted to Licensor for inclusion in the Work
-by the copyright owner or by an individual or Legal Entity authorized to submit
-on behalf of the copyright owner. For the purposes of this definition,
-"submitted" means any form of electronic, verbal, or written communication sent
-to the Licensor or its representatives, including but not limited to
-communication on electronic mailing lists, source code control systems, and
-issue tracking systems that are managed by, or on behalf of, the Licensor for
-the purpose of discussing and improving the Work, but excluding communication
-that is conspicuously marked or otherwise designated in writing by the copyright
-owner as "Not a Contribution."
-
-"Contributor" shall mean Licensor and any individual or Legal Entity on behalf
-of whom a Contribution has been received by Licensor and subsequently
-incorporated within the Work.
-
-2. Grant of Copyright License.
-
-Subject to the terms and conditions of this License, each Contributor hereby
-grants to You a perpetual, worldwide, non-exclusive, no-charge, royalty-free,
-irrevocable copyright license to reproduce, prepare Derivative Works of,
-publicly display, publicly perform, sublicense, and distribute the Work and such
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-grants to You a perpetual, worldwide, non-exclusive, no-charge, royalty-free,
-irrevocable (except as stated in this section) patent license to make, have
-made, use, offer to sell, sell, import, and otherwise transfer the Work, where
-such license applies only to those patent claims licensable by such Contributor
-that are necessarily infringed by their Contribution(s) alone or by combination
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-submitted. If You institute patent litigation against any entity (including a
-cross-claim or counterclaim in a lawsuit) alleging that the Work or a
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-patent infringement, then any patent licenses granted to You under this License
-for that Work shall terminate as of the date such litigation is filed.
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-4. Redistribution.
-
-You may reproduce and distribute copies of the Work or Derivative Works thereof
-in any medium, with or without modifications, and in Source or Object form,
-provided that You meet the following conditions:
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-this License; and
-You must cause any modified files to carry prominent notices stating that You
-changed the files; and
-You must retain, in the Source form of any Derivative Works that You distribute,
-all copyright, patent, trademark, and attribution notices from the Source form
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-Derivative Works; and
-If the Work includes a "NOTICE" text file as part of its distribution, then any
-Derivative Works that You distribute must include a readable copy of the
-attribution notices contained within such NOTICE file, excluding those notices
-that do not pertain to any part of the Derivative Works, in at least one of the
-following places: within a NOTICE text file distributed as part of the
-Derivative Works; within the Source form or documentation, if provided along
-with the Derivative Works; or, within a display generated by the Derivative
-Works, if and wherever such third-party notices normally appear. The contents of
-the NOTICE file are for informational purposes only and do not modify the
-License. You may add Your own attribution notices within Derivative Works that
-You distribute, alongside or as an addendum to the NOTICE text from the Work,
-provided that such additional attribution notices cannot be construed as
-modifying the License.
-You may add Your own copyright statement to Your modifications and may provide
-additional or different license terms and conditions for use, reproduction, or
-distribution of Your modifications, or for any such Derivative Works as a whole,
-provided Your use, reproduction, and distribution of the Work otherwise complies
-with the conditions stated in this License.
-
-5. Submission of Contributions.
-
-Unless You explicitly state otherwise, any Contribution intentionally submitted
-for inclusion in the Work by You to the Licensor shall be under the terms and
-conditions of this License, without any additional terms or conditions.
-Notwithstanding the above, nothing herein shall supersede or modify the terms of
-any separate license agreement you may have executed with Licensor regarding
-such Contributions.
-
-6. Trademarks.
-
-This License does not grant permission to use the trade names, trademarks,
-service marks, or product names of the Licensor, except as required for
-reasonable and customary use in describing the origin of the Work and
-reproducing the content of the NOTICE file.
-
-7. Disclaimer of Warranty.
-
-Unless required by applicable law or agreed to in writing, Licensor provides the
-Work (and each Contributor provides its Contributions) on an "AS IS" BASIS,
-WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied,
-including, without limitation, any warranties or conditions of TITLE,
-NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A PARTICULAR PURPOSE. You are
-solely responsible for determining the appropriateness of using or
-redistributing the Work and assume any risks associated with Your exercise of
-permissions under this License.
-
-8. Limitation of Liability.
-
-In no event and under no legal theory, whether in tort (including negligence),
-contract, or otherwise, unless required by applicable law (such as deliberate
-and grossly negligent acts) or agreed to in writing, shall any Contributor be
-liable to You for damages, including any direct, indirect, special, incidental,
-or consequential damages of any character arising as a result of this License or
-out of the use or inability to use the Work (including but not limited to
-damages for loss of goodwill, work stoppage, computer failure or malfunction, or
-any and all other commercial damages or losses), even if such Contributor has
-been advised of the possibility of such damages.
-
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-
-While redistributing the Work or Derivative Works thereof, You may choose to
-offer, and charge a fee for, acceptance of support, warranty, indemnity, or
-other liability obligations and/or rights consistent with this License. However,
-in accepting such obligations, You may act only on Your own behalf and on Your
-sole responsibility, not on behalf of any other Contributor, and only if You
-agree to indemnify, defend, and hold each Contributor harmless for any liability
-incurred by, or claims asserted against, such Contributor by reason of your
-accepting any such warranty or additional liability.
-
-END OF TERMS AND CONDITIONS
-
-APPENDIX: How to apply the Apache License to your work
-
-To apply the Apache License to your work, attach the following boilerplate
-notice, with the fields enclosed by brackets "[]" replaced with your own
-identifying information. (Don't include the brackets!) The text should be
-enclosed in the appropriate comment syntax for the file format. We also
-recommend that a file or class name and description of purpose be included on
-the same "printed page" as the copyright notice for easier identification within
-third-party archives.
-
-   Copyright [yyyy] [name of copyright owner]
-
-   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.
\ No newline at end of file
diff --git a/vendor/github.com/unknwon/cae/README.md b/vendor/github.com/unknwon/cae/README.md
deleted file mode 100644
index ff6f97ec15..0000000000
--- a/vendor/github.com/unknwon/cae/README.md
+++ /dev/null
@@ -1,37 +0,0 @@
-Compression and Archive Extensions
-==================================
-
-[![Go Walker](http://gowalker.org/api/v1/badge)](http://gowalker.org/github.com/unknwon/cae)
-
-[中文文档](README_ZH.md)
-
-Package cae implements PHP-like Compression and Archive Extensions.
-
-But this package has some modifications depends on Go-style.
-
-Reference: [PHP:Compression and Archive Extensions](http://www.php.net/manual/en/refs.compression.php).
-
-Code Convention: based on [Go Code Convention](https://github.com/unknwon/go-code-convention).
-
-### Implementations
-
-Package `zip`([Go Walker](http://gowalker.org/github.com/unknwon/cae/zip)) and `tz`([Go Walker](http://gowalker.org/github.com/unknwon/cae/tz)) both enable you to transparently read or write ZIP/TAR.GZ compressed archives and the files inside them.
-
-- Features:
-	- Add file or directory from everywhere to archive, no one-to-one limitation.
-	- Extract part of entries, not all at once. 
-	- Stream data directly into `io.Writer` without any file system storage.
-
-### Test cases and Coverage
-
-All subpackages use [GoConvey](http://goconvey.co/) to write test cases, and coverage is more than 80 percent.
-
-### Use cases
-
-- [Gogs](https://github.com/gogits/gogs): self hosted Git service in the Go Programming Language.
-- [GoBlog](https://github.com/fuxiaohei/GoBlog): personal blogging application.
-- [GoBuild](https://github.com/shxsun/gobuild/): online Go cross-platform compilation and download service.
-
-## License
-
-This project is under Apache v2 License. See the [LICENSE](LICENSE) file for the full license text.
\ No newline at end of file
diff --git a/vendor/github.com/unknwon/cae/README_ZH.md b/vendor/github.com/unknwon/cae/README_ZH.md
deleted file mode 100644
index d5c361e3dc..0000000000
--- a/vendor/github.com/unknwon/cae/README_ZH.md
+++ /dev/null
@@ -1,29 +0,0 @@
-压缩与打包扩展
-=============
-
-[![Go Walker](http://gowalker.org/api/v1/badge)](http://gowalker.org/github.com/unknwon/cae)
-
-包 cae 实现了 PHP 风格的压缩与打包扩展。
-
-但本包依据 Go 语言的风格进行了一些修改。
-
-引用：[PHP:Compression and Archive Extensions](http://www.php.net/manual/en/refs.compression.php)
-
-编码规范：基于 [Go 编码规范](https://github.com/unknwon/go-code-convention)
-
-### 实现
-
-包 `zip`([Go Walker](http://gowalker.org/github.com/unknwon/cae/zip)) 和 `tz`([Go Walker](http://gowalker.org/github.com/unknwon/cae/tz)) 都允许你轻易的读取或写入 ZIP/TAR.GZ 压缩档案和其内部文件。
-
-- 特性：
-	- 将任意位置的文件或目录加入档案，没有一对一的操作限制。
-	- 只解压部分文件，而非一次性解压全部。 
-	- 将数据以流的形式直接写入 `io.Writer` 而不需经过文件系统的存储。
-
-### 测试用例与覆盖率
-
-所有子包均采用 [GoConvey](http://goconvey.co/) 来书写测试用例，覆盖率均超过 80%。
-
-## 授权许可
-
-本项目采用 Apache v2 开源授权许可证，完整的授权说明已放置在 [LICENSE](LICENSE) 文件中。
\ No newline at end of file
diff --git a/vendor/github.com/unknwon/cae/cae.go b/vendor/github.com/unknwon/cae/cae.go
deleted file mode 100644
index 60e295a9cb..0000000000
--- a/vendor/github.com/unknwon/cae/cae.go
+++ /dev/null
@@ -1,108 +0,0 @@
-// 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())
-}
diff --git a/vendor/github.com/unknwon/cae/zip/read.go b/vendor/github.com/unknwon/cae/zip/read.go
deleted file mode 100644
index c4825ef6d5..0000000000
--- a/vendor/github.com/unknwon/cae/zip/read.go
+++ /dev/null
@@ -1,67 +0,0 @@
-// 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
-}
diff --git a/vendor/github.com/unknwon/cae/zip/stream.go b/vendor/github.com/unknwon/cae/zip/stream.go
deleted file mode 100644
index 18d8cc2250..0000000000
--- a/vendor/github.com/unknwon/cae/zip/stream.go
+++ /dev/null
@@ -1,77 +0,0 @@
-// Copyright 2014 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"
-	"io"
-	"os"
-	"path/filepath"
-)
-
-// A StreamArchive represents a streamable archive.
-type StreamArchive struct {
-	*zip.Writer
-}
-
-// NewStreamArachive returns a new streamable archive with given io.Writer.
-// It's caller's responsibility to close io.Writer and streamer after operation.
-func NewStreamArachive(w io.Writer) *StreamArchive {
-	return &StreamArchive{zip.NewWriter(w)}
-}
-
-// StreamFile streams a file or directory entry into StreamArchive.
-func (s *StreamArchive) StreamFile(relPath string, fi os.FileInfo, data []byte) error {
-	if fi.IsDir() {
-		fh, err := zip.FileInfoHeader(fi)
-		if err != nil {
-			return err
-		}
-		fh.Name = relPath + "/"
-		if _, err = s.Writer.CreateHeader(fh); err != nil {
-			return err
-		}
-	} else {
-		fh, err := zip.FileInfoHeader(fi)
-		if err != nil {
-			return err
-		}
-		fh.Name = filepath.Join(relPath, fi.Name())
-		fh.Method = zip.Deflate
-		fw, err := s.Writer.CreateHeader(fh)
-		if err != nil {
-			return err
-		} else if _, err = fw.Write(data); err != nil {
-			return err
-		}
-	}
-	return nil
-}
-
-// StreamReader streams data from io.Reader to StreamArchive.
-func (s *StreamArchive) StreamReader(relPath string, fi os.FileInfo, r io.Reader) (err error) {
-	fh, err := zip.FileInfoHeader(fi)
-	if err != nil {
-		return err
-	}
-	fh.Name = filepath.Join(relPath, fi.Name())
-
-	fw, err := s.Writer.CreateHeader(fh)
-	if err != nil {
-		return err
-	}
-	_, err = io.Copy(fw, r)
-	return err
-}
diff --git a/vendor/github.com/unknwon/cae/zip/write.go b/vendor/github.com/unknwon/cae/zip/write.go
deleted file mode 100644
index 5d4679602c..0000000000
--- a/vendor/github.com/unknwon/cae/zip/write.go
+++ /dev/null
@@ -1,364 +0,0 @@
-// 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"
-	"fmt"
-	"io"
-	"os"
-	"path"
-	"path/filepath"
-	"strings"
-
-	"github.com/unknwon/cae"
-)
-
-// Switcher of printing trace information when pack and extract.
-var Verbose = true
-
-// extractFile extracts zip.File to file system.
-func extractFile(f *zip.File, destPath string) error {
-	filePath := path.Join(destPath, f.Name)
-	os.MkdirAll(path.Dir(filePath), os.ModePerm)
-
-	rc, err := f.Open()
-	if err != nil {
-		return err
-	}
-	defer rc.Close()
-
-	fw, err := os.Create(filePath)
-	if err != nil {
-		return err
-	}
-	defer fw.Close()
-
-	if _, err = io.Copy(fw, rc); err != nil {
-		return err
-	}
-
-	// Skip symbolic links.
-	if f.FileInfo().Mode()&os.ModeSymlink != 0 {
-		return nil
-	}
-	// Set back file information.
-	if err = os.Chtimes(filePath, f.ModTime(), f.ModTime()); err != nil {
-		return err
-	}
-	return os.Chmod(filePath, f.FileInfo().Mode())
-}
-
-var defaultExtractFunc = func(fullName string, fi os.FileInfo) error {
-	if !Verbose {
-		return nil
-	}
-
-	fmt.Println("Extracting file..." + fullName)
-	return nil
-}
-
-// ExtractToFunc extracts the whole archive or the given files to the
-// specified destination.
-// It accepts a function as a middleware for custom operations.
-func (z *ZipArchive) ExtractToFunc(destPath string, fn cae.HookFunc, entries ...string) (err error) {
-	destPath = strings.Replace(destPath, "\\", "/", -1)
-	isHasEntry := len(entries) > 0
-	if Verbose {
-		fmt.Println("Unzipping " + z.FileName + "...")
-	}
-	os.MkdirAll(destPath, os.ModePerm)
-	for _, f := range z.File {
-		f.Name = strings.Replace(f.Name, "\\", "/", -1)
-
-		// Directory.
-		if strings.HasSuffix(f.Name, "/") {
-			if isHasEntry {
-				if cae.IsEntry(f.Name, entries) {
-					if err = fn(f.Name, f.FileInfo()); err != nil {
-						continue
-					}
-					os.MkdirAll(path.Join(destPath, f.Name), os.ModePerm)
-				}
-				continue
-			}
-			if err = fn(f.Name, f.FileInfo()); err != nil {
-				continue
-			}
-			os.MkdirAll(path.Join(destPath, f.Name), os.ModePerm)
-			continue
-		}
-
-		// File.
-		if isHasEntry {
-			if cae.IsEntry(f.Name, entries) {
-				if err = fn(f.Name, f.FileInfo()); err != nil {
-					continue
-				}
-				err = extractFile(f, destPath)
-			}
-		} else {
-			if err = fn(f.Name, f.FileInfo()); err != nil {
-				continue
-			}
-			err = extractFile(f, destPath)
-		}
-		if err != nil {
-			return err
-		}
-	}
-	return nil
-}
-
-// ExtractToFunc extracts the whole archive or the given files to the
-// specified destination.
-// It accepts a function as a middleware for custom operations.
-func ExtractToFunc(srcPath, destPath string, fn cae.HookFunc, entries ...string) (err error) {
-	z, err := Open(srcPath)
-	if err != nil {
-		return err
-	}
-	defer z.Close()
-	return z.ExtractToFunc(destPath, fn, entries...)
-}
-
-// ExtractTo extracts the whole archive or the given files to the
-// specified destination.
-// Call Flush() to apply changes before this.
-func (z *ZipArchive) ExtractTo(destPath string, entries ...string) (err error) {
-	return z.ExtractToFunc(destPath, defaultExtractFunc, entries...)
-}
-
-// ExtractTo extracts given archive or the given files to the
-// specified destination.
-func ExtractTo(srcPath, destPath string, entries ...string) (err error) {
-	return ExtractToFunc(srcPath, destPath, defaultExtractFunc, entries...)
-}
-
-// extractFile extracts file from ZipArchive to file system.
-func (z *ZipArchive) extractFile(f *File) error {
-	if !z.isHasWriter {
-		for _, zf := range z.ReadCloser.File {
-			if f.Name == zf.Name {
-				return extractFile(zf, path.Dir(f.tmpPath))
-			}
-		}
-	}
-	return cae.Copy(f.tmpPath, f.absPath)
-}
-
-// Flush saves changes to original zip file if any.
-func (z *ZipArchive) Flush() error {
-	if !z.isHasChanged || (z.ReadCloser == nil && !z.isHasWriter) {
-		return nil
-	}
-
-	// Extract to tmp path and pack back.
-	tmpPath := path.Join(os.TempDir(), "cae", path.Base(z.FileName))
-	os.RemoveAll(tmpPath)
-	defer os.RemoveAll(tmpPath)
-
-	for _, f := range z.files {
-		if strings.HasSuffix(f.Name, "/") {
-			os.MkdirAll(path.Join(tmpPath, f.Name), os.ModePerm)
-			continue
-		}
-
-		// Relative path inside zip temporary changed.
-		f.tmpPath = path.Join(tmpPath, f.Name)
-		if err := z.extractFile(f); err != nil {
-			return err
-		}
-	}
-
-	if z.isHasWriter {
-		return packToWriter(tmpPath, z.writer, defaultPackFunc, true)
-	}
-
-	if err := PackTo(tmpPath, z.FileName); err != nil {
-		return err
-	}
-	return z.Open(z.FileName, os.O_RDWR|os.O_TRUNC, z.Permission)
-}
-
-// packFile packs a file or directory to zip.Writer.
-func packFile(srcFile string, recPath string, zw *zip.Writer, fi os.FileInfo) error {
-	if fi.IsDir() {
-		fh, err := zip.FileInfoHeader(fi)
-		if err != nil {
-			return err
-		}
-		fh.Name = recPath + "/"
-		if _, err = zw.CreateHeader(fh); err != nil {
-			return err
-		}
-	} else {
-		fh, err := zip.FileInfoHeader(fi)
-		if err != nil {
-			return err
-		}
-		fh.Name = recPath
-		fh.Method = zip.Deflate
-
-		fw, err := zw.CreateHeader(fh)
-		if err != nil {
-			return err
-		}
-
-		if fi.Mode()&os.ModeSymlink != 0 {
-			target, err := os.Readlink(srcFile)
-			if err != nil {
-				return err
-			}
-			if _, err = fw.Write([]byte(target)); err != nil {
-				return err
-			}
-		} else {
-			f, err := os.Open(srcFile)
-			if err != nil {
-				return err
-			}
-			defer f.Close()
-
-			if _, err = io.Copy(fw, f); err != nil {
-				return err
-			}
-		}
-	}
-	return nil
-}
-
-// packDir packs a directory and its subdirectories and files
-// recursively to zip.Writer.
-func packDir(srcPath string, recPath string, zw *zip.Writer, fn cae.HookFunc) error {
-	dir, err := os.Open(srcPath)
-	if err != nil {
-		return err
-	}
-	defer dir.Close()
-
-	fis, err := dir.Readdir(0)
-	if err != nil {
-		return err
-	}
-	for _, fi := range fis {
-		if cae.IsFilter(fi.Name()) {
-			continue
-		}
-		curPath := srcPath + "/" + fi.Name()
-		tmpRecPath := filepath.Join(recPath, fi.Name())
-		if err = fn(curPath, fi); err != nil {
-			continue
-		}
-
-		if fi.IsDir() {
-			if err = packFile(srcPath, tmpRecPath, zw, fi); err != nil {
-				return err
-			}
-			err = packDir(curPath, tmpRecPath, zw, fn)
-		} else {
-			err = packFile(curPath, tmpRecPath, zw, fi)
-		}
-		if err != nil {
-			return err
-		}
-	}
-	return nil
-}
-
-// packToWriter packs given path object to io.Writer.
-func packToWriter(srcPath string, w io.Writer, fn func(fullName string, fi os.FileInfo) error, includeDir bool) error {
-	zw := zip.NewWriter(w)
-	defer zw.Close()
-
-	f, err := os.Open(srcPath)
-	if err != nil {
-		return err
-	}
-	defer f.Close()
-
-	fi, err := f.Stat()
-	if err != nil {
-		return err
-	}
-
-	basePath := path.Base(srcPath)
-	if fi.IsDir() {
-		if includeDir {
-			if err = packFile(srcPath, basePath, zw, fi); err != nil {
-				return err
-			}
-		} else {
-			basePath = ""
-		}
-		return packDir(srcPath, basePath, zw, fn)
-	}
-	return packFile(srcPath, basePath, zw, fi)
-}
-
-// packTo packs given source path object to target path.
-func packTo(srcPath, destPath string, fn cae.HookFunc, includeDir bool) error {
-	fw, err := os.Create(destPath)
-	if err != nil {
-		return err
-	}
-	defer fw.Close()
-
-	return packToWriter(srcPath, fw, fn, includeDir)
-}
-
-// PackToFunc packs the complete archive to the specified destination.
-// It accepts a function as a middleware for custom operations.
-func PackToFunc(srcPath, destPath string, fn func(fullName string, fi os.FileInfo) error, includeDir ...bool) error {
-	isIncludeDir := false
-	if len(includeDir) > 0 && includeDir[0] {
-		isIncludeDir = true
-	}
-	return packTo(srcPath, destPath, fn, isIncludeDir)
-}
-
-var defaultPackFunc = func(fullName string, fi os.FileInfo) error {
-	if !Verbose {
-		return nil
-	}
-
-	if fi.IsDir() {
-		fmt.Printf("Adding dir...%s\n", fullName)
-	} else {
-		fmt.Printf("Adding file...%s\n", fullName)
-	}
-	return nil
-}
-
-// PackTo packs the whole archive to the specified destination.
-// Call Flush() will automatically call this in the end.
-func PackTo(srcPath, destPath string, includeDir ...bool) error {
-	return PackToFunc(srcPath, destPath, defaultPackFunc, includeDir...)
-}
-
-// Close opens or creates archive and save changes.
-func (z *ZipArchive) Close() (err error) {
-	if err = z.Flush(); err != nil {
-		return err
-	}
-
-	if z.ReadCloser != nil {
-		if err = z.ReadCloser.Close(); err != nil {
-			return err
-		}
-		z.ReadCloser = nil
-	}
-	return nil
-}
diff --git a/vendor/github.com/unknwon/cae/zip/zip.go b/vendor/github.com/unknwon/cae/zip/zip.go
deleted file mode 100644
index b5d7d1071c..0000000000
--- a/vendor/github.com/unknwon/cae/zip/zip.go
+++ /dev/null
@@ -1,238 +0,0 @@
-// 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 enables you to transparently read or write ZIP compressed archives and the files inside them.
-package zip
-
-import (
-	"archive/zip"
-	"errors"
-	"io"
-	"os"
-	"path"
-	"strings"
-
-	"github.com/unknwon/cae"
-)
-
-// A File represents a file or directory entry in archive.
-type File struct {
-	*zip.FileHeader
-	oldName    string // NOTE: unused, for future change name feature.
-	oldComment string // NOTE: unused, for future change comment feature.
-	absPath    string // Absolute path of local file system.
-	tmpPath    string
-}
-
-// A ZipArchive represents a file archive, compressed with Zip.
-type ZipArchive struct {
-	*zip.ReadCloser
-	FileName   string
-	Comment    string
-	NumFiles   int
-	Flag       int
-	Permission os.FileMode
-
-	files        []*File
-	isHasChanged bool
-
-	// For supporting flushing to io.Writer.
-	writer      io.Writer
-	isHasWriter bool
-}
-
-// 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 OpenFile(name string, flag int, perm os.FileMode) (*ZipArchive, error) {
-	z := new(ZipArchive)
-	err := z.Open(name, flag, perm)
-	return z, err
-}
-
-// Create creates the named zip file, truncating
-// it if it already exists. If successful, methods on the returned
-// ZipArchive can be used for I/O; the associated file descriptor has mode
-// O_RDWR.
-// If there is an error, it will be of type *PathError.
-func Create(name string) (*ZipArchive, error) {
-	os.MkdirAll(path.Dir(name), os.ModePerm)
-	return OpenFile(name, os.O_RDWR|os.O_CREATE|os.O_TRUNC, 0666)
-}
-
-// Open opens the named zip file for reading. If successful, methods on
-// the returned ZipArchive can be used for reading; the associated file
-// descriptor has mode O_RDONLY.
-// If there is an error, it will be of type *PathError.
-func Open(name string) (*ZipArchive, error) {
-	return OpenFile(name, os.O_RDONLY, 0)
-}
-
-// New accepts a variable that implemented interface io.Writer
-// for write-only purpose operations.
-func New(w io.Writer) *ZipArchive {
-	return &ZipArchive{
-		writer:      w,
-		isHasWriter: true,
-	}
-}
-
-// List returns a string slice of files' name in ZipArchive.
-// Specify prefixes will be used as filters.
-func (z *ZipArchive) List(prefixes ...string) []string {
-	isHasPrefix := len(prefixes) > 0
-	names := make([]string, 0, z.NumFiles)
-	for _, f := range z.files {
-		if isHasPrefix && !cae.HasPrefix(f.Name, prefixes) {
-			continue
-		}
-		names = append(names, f.Name)
-	}
-	return names
-}
-
-// AddEmptyDir adds a raw directory entry to ZipArchive,
-// it returns false if same directory enry already existed.
-func (z *ZipArchive) AddEmptyDir(dirPath string) bool {
-	dirPath = strings.Replace(dirPath, "\\", "/", -1)
-
-	if !strings.HasSuffix(dirPath, "/") {
-		dirPath += "/"
-	}
-
-	for _, f := range z.files {
-		if dirPath == f.Name {
-			return false
-		}
-	}
-
-	dirPath = strings.TrimSuffix(dirPath, "/")
-	if strings.Contains(dirPath, "/") {
-		// Auto add all upper level directories.
-		z.AddEmptyDir(path.Dir(dirPath))
-	}
-	z.files = append(z.files, &File{
-		FileHeader: &zip.FileHeader{
-			Name:             dirPath + "/",
-			UncompressedSize: 0,
-		},
-	})
-	z.updateStat()
-	return true
-}
-
-// AddDir adds a directory and subdirectories entries to ZipArchive.
-func (z *ZipArchive) AddDir(dirPath, absPath string) error {
-	dir, err := os.Open(absPath)
-	if err != nil {
-		return err
-	}
-	defer dir.Close()
-
-	// Make sure we have all upper level directories.
-	z.AddEmptyDir(dirPath)
-
-	fis, err := dir.Readdir(0)
-	if err != nil {
-		return err
-	}
-	for _, fi := range fis {
-		curPath := absPath + "/" + fi.Name()
-		tmpRecPath := path.Join(dirPath, fi.Name())
-		if fi.IsDir() {
-			if err = z.AddDir(tmpRecPath, curPath); err != nil {
-				return err
-			}
-		} else {
-			if err = z.AddFile(tmpRecPath, curPath); err != nil {
-				return err
-			}
-		}
-	}
-	return nil
-}
-
-// updateStat should be called after every change for rebuilding statistic.
-func (z *ZipArchive) updateStat() {
-	z.NumFiles = len(z.files)
-	z.isHasChanged = true
-}
-
-// AddFile adds a file entry to ZipArchive.
-func (z *ZipArchive) AddFile(fileName, absPath string) error {
-	fileName = strings.Replace(fileName, "\\", "/", -1)
-	absPath = strings.Replace(absPath, "\\", "/", -1)
-
-	if cae.IsFilter(absPath) {
-		return nil
-	}
-
-	f, err := os.Open(absPath)
-	if err != nil {
-		return err
-	}
-	defer f.Close()
-
-	fi, err := f.Stat()
-	if err != nil {
-		return err
-	}
-
-	file := new(File)
-	file.FileHeader, err = zip.FileInfoHeader(fi)
-	if err != nil {
-		return err
-	}
-	file.Name = fileName
-	file.absPath = absPath
-
-	z.AddEmptyDir(path.Dir(fileName))
-
-	isExist := false
-	for _, f := range z.files {
-		if fileName == f.Name {
-			f = file
-			isExist = true
-			break
-		}
-	}
-	if !isExist {
-		z.files = append(z.files, file)
-	}
-
-	z.updateStat()
-	return nil
-}
-
-// DeleteIndex deletes an entry in the archive by its index.
-func (z *ZipArchive) DeleteIndex(idx int) error {
-	if idx >= z.NumFiles {
-		return errors.New("index out of range of number of files")
-	}
-
-	z.files = append(z.files[:idx], z.files[idx+1:]...)
-	return nil
-}
-
-// DeleteName deletes an entry in the archive by its name.
-func (z *ZipArchive) DeleteName(name string) error {
-	for i, f := range z.files {
-		if f.Name == name {
-			return z.DeleteIndex(i)
-		}
-	}
-	return errors.New("entry with given name not found")
-}