Merge pull request #17 from nsheridan/vendor

update dependencies

3 files changed, 530 insertions, 0 deletions

diff --git a/vendor/go4.org/LICENSE b/vendor/go4.org/LICENSE
new file mode 100644
index 0000000..8f71f43
--- /dev/null
+++ b/vendor/go4.org/LICENSE
@@ -0,0 +1,202 @@
+                                 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 Derivative Works in Source or Object form.
+
+   3. Grant of Patent 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
+      (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 of their Contribution(s)
+      with the Work to which such Contribution(s) was submitted. If You
+      institute patent litigation against any entity (including a
+      cross-claim or counterclaim in a lawsuit) alleging that the Work
+      or a Contribution incorporated within the Work constitutes direct
+      or contributory 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.
+
+   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:
+
+      (a) You must give any other recipients of the Work or
+          Derivative Works a copy of this License; and
+
+      (b) You must cause any modified files to carry prominent notices
+          stating that You changed the files; and
+
+      (c) 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 of the Work,
+          excluding those notices that do not pertain to any part of
+          the Derivative Works; and
+
+      (d) 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.
+
+   9. Accepting Warranty or Additional Liability. 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.
+
diff --git a/vendor/go4.org/wkfs/gcs/gcs.go b/vendor/go4.org/wkfs/gcs/gcs.go
new file mode 100644
index 0000000..21f2551
--- /dev/null
+++ b/vendor/go4.org/wkfs/gcs/gcs.go
@@ -0,0 +1,196 @@
+/*
+Copyright 2014 The Camlistore Authors
+
+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 gcs registers a Google Cloud Storage filesystem at the
+// well-known /gcs/ filesystem path if the current machine is running
+// on Google Compute Engine.
+//
+// It was initially only meant for small files, and as such, it can only
+// read files smaller than 1MB for now.
+package gcs // import "go4.org/wkfs/gcs"
+
+import (
+	"bytes"
+	"fmt"
+	"io"
+	"io/ioutil"
+	"os"
+	"path"
+	"strings"
+	"time"
+
+	"go4.org/wkfs"
+	"golang.org/x/net/context"
+	"golang.org/x/oauth2"
+	"golang.org/x/oauth2/google"
+	"google.golang.org/cloud"
+	"google.golang.org/cloud/compute/metadata"
+	"google.golang.org/cloud/storage"
+)
+
+// Max size for all files read, because we use a bytes.Reader as our file
+// reader, instead of storage.NewReader. This is because we get all wkfs.File
+// methods for free by embedding a bytes.Reader. This filesystem was only supposed
+// to be for configuration data only, so this is ok for now.
+const maxSize = 1 << 20
+
+func init() {
+	if !metadata.OnGCE() {
+		return
+	}
+	hc, err := google.DefaultClient(oauth2.NoContext)
+	if err != nil {
+		registerBrokenFS(fmt.Errorf("could not get http client for context: %v", err))
+		return
+	}
+	projID, err := metadata.ProjectID()
+	if projID == "" || err != nil {
+		registerBrokenFS(fmt.Errorf("could not get GCE project ID: %v", err))
+		return
+	}
+	ctx := cloud.NewContext(projID, hc)
+	sc, err := storage.NewClient(ctx)
+	if err != nil {
+		registerBrokenFS(fmt.Errorf("could not get cloud storage client: %v", err))
+		return
+	}
+	wkfs.RegisterFS("/gcs/", &gcsFS{
+		ctx: ctx,
+		sc:  sc,
+	})
+}
+
+type gcsFS struct {
+	ctx context.Context
+	sc  *storage.Client
+	err error // sticky error
+}
+
+func registerBrokenFS(err error) {
+	wkfs.RegisterFS("/gcs/", &gcsFS{
+		err: err,
+	})
+}
+
+func (fs *gcsFS) parseName(name string) (bucket, fileName string, err error) {
+	if fs.err != nil {
+		return "", "", fs.err
+	}
+	name = strings.TrimPrefix(name, "/gcs/")
+	i := strings.Index(name, "/")
+	if i < 0 {
+		return name, "", nil
+	}
+	return name[:i], name[i+1:], nil
+}
+
+// Open opens the named file for reading. It returns an error if the file size
+// is larger than 1 << 20.
+func (fs *gcsFS) Open(name string) (wkfs.File, error) {
+	bucket, fileName, err := fs.parseName(name)
+	if err != nil {
+		return nil, err
+	}
+	obj := fs.sc.Bucket(bucket).Object(fileName)
+	attrs, err := obj.Attrs(fs.ctx)
+	if err != nil {
+		return nil, err
+	}
+	size := attrs.Size
+	if size > maxSize {
+		return nil, fmt.Errorf("file %s too large (%d bytes) for /gcs/ filesystem", name, size)
+	}
+	rc, err := obj.NewReader(fs.ctx)
+	if err != nil {
+		return nil, err
+	}
+	defer rc.Close()
+
+	slurp, err := ioutil.ReadAll(io.LimitReader(rc, size))
+	if err != nil {
+		return nil, err
+	}
+	return &file{
+		name:   name,
+		Reader: bytes.NewReader(slurp),
+	}, nil
+}
+
+func (fs *gcsFS) Stat(name string) (os.FileInfo, error) { return fs.Lstat(name) }
+func (fs *gcsFS) Lstat(name string) (os.FileInfo, error) {
+	bucket, fileName, err := fs.parseName(name)
+	if err != nil {
+		return nil, err
+	}
+	attrs, err := fs.sc.Bucket(bucket).Object(fileName).Attrs(fs.ctx)
+	if err == storage.ErrObjectNotExist {
+		return nil, os.ErrNotExist
+	}
+	if err != nil {
+		return nil, err
+	}
+	return &statInfo{
+		name: attrs.Name,
+		size: attrs.Size,
+	}, nil
+}
+
+func (fs *gcsFS) MkdirAll(path string, perm os.FileMode) error { return nil }
+
+func (fs *gcsFS) OpenFile(name string, flag int, perm os.FileMode) (wkfs.FileWriter, error) {
+	bucket, fileName, err := fs.parseName(name)
+	if err != nil {
+		return nil, err
+	}
+	switch flag {
+	case os.O_WRONLY | os.O_CREATE | os.O_EXCL:
+	case os.O_WRONLY | os.O_CREATE | os.O_TRUNC:
+	default:
+		return nil, fmt.Errorf("Unsupported OpenFlag flag mode %d on Google Cloud Storage", flag)
+	}
+	if flag&os.O_EXCL != 0 {
+		if _, err := fs.Stat(name); err == nil {
+			return nil, os.ErrExist
+		}
+	}
+	// TODO(mpl): consider adding perm to the object's ObjectAttrs.Metadata
+	return fs.sc.Bucket(bucket).Object(fileName).NewWriter(fs.ctx), nil
+}
+
+type statInfo struct {
+	name    string
+	size    int64
+	isDir   bool
+	modtime time.Time
+}
+
+func (si *statInfo) IsDir() bool        { return si.isDir }
+func (si *statInfo) ModTime() time.Time { return si.modtime }
+func (si *statInfo) Mode() os.FileMode  { return 0644 }
+func (si *statInfo) Name() string       { return path.Base(si.name) }
+func (si *statInfo) Size() int64        { return si.size }
+func (si *statInfo) Sys() interface{}   { return nil }
+
+type file struct {
+	name string
+	*bytes.Reader
+}
+
+func (*file) Close() error   { return nil }
+func (f *file) Name() string { return path.Base(f.name) }
+func (f *file) Stat() (os.FileInfo, error) {
+	panic("Stat not implemented on /gcs/ files yet")
+}
diff --git a/vendor/go4.org/wkfs/wkfs.go b/vendor/go4.org/wkfs/wkfs.go
new file mode 100644
index 0000000..f4df062
--- /dev/null
+++ b/vendor/go4.org/wkfs/wkfs.go
@@ -0,0 +1,132 @@
+/*
+Copyright 2014 The Camlistore Authors
+
+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 wkfs implements the pluggable "well-known filesystem" abstraction layer.
+//
+// Instead of accessing files directly through the operating system
+// using os.Open or os.Stat, code should use wkfs.Open or wkfs.Stat,
+// which first try to intercept paths at well-known top-level
+// directories representing previously-registered mount types,
+// otherwise fall through to the operating system paths.
+//
+// Example of top-level well-known directories that might be
+// registered include /gcs/bucket/object for Google Cloud Storage or
+// /s3/bucket/object for AWS S3.
+package wkfs // import "go4.org/wkfs"
+
+import (
+	"io"
+	"io/ioutil"
+	"os"
+	"strings"
+)
+
+type File interface {
+	io.Reader
+	io.ReaderAt
+	io.Closer
+	io.Seeker
+	Name() string
+	Stat() (os.FileInfo, error)
+}
+
+type FileWriter interface {
+	io.Writer
+	io.Closer
+}
+
+func Open(name string) (File, error)               { return fs(name).Open(name) }
+func Stat(name string) (os.FileInfo, error)        { return fs(name).Stat(name) }
+func Lstat(name string) (os.FileInfo, error)       { return fs(name).Lstat(name) }
+func MkdirAll(path string, perm os.FileMode) error { return fs(path).MkdirAll(path, perm) }
+func OpenFile(name string, flag int, perm os.FileMode) (FileWriter, error) {
+	return fs(name).OpenFile(name, flag, perm)
+}
+func Create(name string) (FileWriter, error) {
+	// like os.Create but WRONLY instead of RDWR because we don't
+	// expose a Reader here.
+	return OpenFile(name, os.O_WRONLY|os.O_CREATE|os.O_TRUNC, 0666)
+}
+
+func fs(name string) FileSystem {
+	for pfx, fs := range wkFS {
+		if strings.HasPrefix(name, pfx) {
+			return fs
+		}
+	}
+	return osFS{}
+}
+
+type osFS struct{}
+
+func (osFS) Open(name string) (File, error)               { return os.Open(name) }
+func (osFS) Stat(name string) (os.FileInfo, error)        { return os.Stat(name) }
+func (osFS) Lstat(name string) (os.FileInfo, error)       { return os.Lstat(name) }
+func (osFS) MkdirAll(path string, perm os.FileMode) error { return os.MkdirAll(path, perm) }
+func (osFS) OpenFile(name string, flag int, perm os.FileMode) (FileWriter, error) {
+	return os.OpenFile(name, flag, perm)
+}
+
+type FileSystem interface {
+	Open(name string) (File, error)
+	OpenFile(name string, flag int, perm os.FileMode) (FileWriter, error)
+	Stat(name string) (os.FileInfo, error)
+	Lstat(name string) (os.FileInfo, error)
+	MkdirAll(path string, perm os.FileMode) error
+}
+
+// well-known filesystems
+var wkFS = map[string]FileSystem{}
+
+// RegisterFS registers a well-known filesystem. It intercepts
+// anything beginning with prefix (which must start and end with a
+// forward slash) and forwards it to fs.
+func RegisterFS(prefix string, fs FileSystem) {
+	if !strings.HasPrefix(prefix, "/") || !strings.HasSuffix(prefix, "/") {
+		panic("bogus prefix: " + prefix)
+	}
+	if _, dup := wkFS[prefix]; dup {
+		panic("duplication registration of " + prefix)
+	}
+	wkFS[prefix] = fs
+}
+
+// WriteFile writes data to a file named by filename.
+// If the file does not exist, WriteFile creates it with permissions perm;
+// otherwise WriteFile truncates it before writing.
+func WriteFile(filename string, data []byte, perm os.FileMode) error {
+	f, err := OpenFile(filename, os.O_WRONLY|os.O_CREATE|os.O_TRUNC, perm)
+	if err != nil {
+		return err
+	}
+	n, err := f.Write(data)
+	if err == nil && n < len(data) {
+		err = io.ErrShortWrite
+	}
+	if err1 := f.Close(); err == nil {
+		err = err1
+	}
+	return err
+}
+
+func ReadFile(filename string) ([]byte, error) {
+	f, err := Open(filename)
+	if err != nil {
+		return nil, err
+	}
+	defer f.Close()
+	return ioutil.ReadAll(f)
+}