Major rewrite

* use dep for vendoring
* lets encrypt
* moved web to transfer.sh-web repo
* single command install
* added first tests

vendor/github.com/golang/gddo/gosrc/launchpad.go

@@ -0,0 +1,135 @@
+// Copyright 2013 The Go Authors. All rights reserved.
+//
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file or at
+// https://developers.google.com/open-source/licenses/bsd.
+
+package gosrc
+
+import (
+	"archive/tar"
+	"bytes"
+	"compress/gzip"
+	"crypto/md5"
+	"encoding/hex"
+	"io"
+	"net/http"
+	"path"
+	"regexp"
+	"sort"
+	"strings"
+)
+
+func init() {
+	addService(&service{
+		pattern: regexp.MustCompile(`^launchpad\.net/(?P<repo>(?P<project>[a-z0-9A-Z_.\-]+)(?P<series>/[a-z0-9A-Z_.\-]+)?|~[a-z0-9A-Z_.\-]+/(\+junk|[a-z0-9A-Z_.\-]+)/[a-z0-9A-Z_.\-]+)(?P<dir>/[a-z0-9A-Z_.\-/]+)*$`),
+		prefix:  "launchpad.net/",
+		get:     getLaunchpadDir,
+	})
+}
+
+type byHash []byte
+
+func (p byHash) Len() int { return len(p) / md5.Size }
+func (p byHash) Less(i, j int) bool {
+	return -1 == bytes.Compare(p[i*md5.Size:(i+1)*md5.Size], p[j*md5.Size:(j+1)*md5.Size])
+}
+func (p byHash) Swap(i, j int) {
+	var temp [md5.Size]byte
+	copy(temp[:], p[i*md5.Size:])
+	copy(p[i*md5.Size:(i+1)*md5.Size], p[j*md5.Size:])
+	copy(p[j*md5.Size:], temp[:])
+}
+
+func getLaunchpadDir(client *http.Client, match map[string]string, savedEtag string) (*Directory, error) {
+	c := &httpClient{client: client}
+
+	if match["project"] != "" && match["series"] != "" {
+		rc, err := c.getReader(expand("https://code.launchpad.net/{project}{series}/.bzr/branch-format", match))
+		switch {
+		case err == nil:
+			rc.Close()
+			// The structure of the import path is launchpad.net/{root}/{dir}.
+		case IsNotFound(err):
+			// The structure of the import path is is launchpad.net/{project}/{dir}.
+			match["repo"] = match["project"]
+			match["dir"] = expand("{series}{dir}", match)
+		default:
+			return nil, err
+		}
+	}
+
+	p, err := c.getBytes(expand("https://bazaar.launchpad.net/+branch/{repo}/tarball", match))
+	if err != nil {
+		return nil, err
+	}
+
+	gzr, err := gzip.NewReader(bytes.NewReader(p))
+	if err != nil {
+		return nil, err
+	}
+	defer gzr.Close()
+
+	tr := tar.NewReader(gzr)
+
+	var hash []byte
+	inTree := false
+	dirPrefix := expand("+branch/{repo}{dir}/", match)
+	var files []*File
+	for {
+		h, err := tr.Next()
+		if err == io.EOF {
+			break
+		}
+		if err != nil {
+			return nil, err
+		}
+		d, f := path.Split(h.Name)
+		if !isDocFile(f) {
+			continue
+		}
+		b := make([]byte, h.Size)
+		if _, err := io.ReadFull(tr, b); err != nil {
+			return nil, err
+		}
+
+		m := md5.New()
+		m.Write(b)
+		hash = m.Sum(hash)
+
+		if !strings.HasPrefix(h.Name, dirPrefix) {
+			continue
+		}
+		inTree = true
+		if d == dirPrefix {
+			files = append(files, &File{
+				Name:      f,
+				BrowseURL: expand("http://bazaar.launchpad.net/+branch/{repo}/view/head:{dir}/{0}", match, f),
+				Data:      b})
+		}
+	}
+
+	if !inTree {
+		return nil, NotFoundError{Message: "Directory tree does not contain Go files."}
+	}
+
+	sort.Sort(byHash(hash))
+	m := md5.New()
+	m.Write(hash)
+	hash = m.Sum(hash[:0])
+	etag := hex.EncodeToString(hash)
+	if etag == savedEtag {
+		return nil, NotModifiedError{}
+	}
+
+	return &Directory{
+		BrowseURL:   expand("http://bazaar.launchpad.net/+branch/{repo}/view/head:{dir}/", match),
+		Etag:        etag,
+		Files:       files,
+		LineFmt:     "%s#L%d",
+		ProjectName: match["repo"],
+		ProjectRoot: expand("launchpad.net/{repo}", match),
+		ProjectURL:  expand("https://launchpad.net/{repo}/", match),
+		VCS:         "bzr",
+	}, nil
+}