Merge branch 'update'

Godeps/Godeps.json

@@ -5,6 +5,11 @@
 		"./..."
 	],
 	"Deps": [
+		{
+			"ImportPath": "bitbucket.org/kardianos/osext",
+			"Comment": "null-9",
+			"Rev": "364fb577de68fb646c4cb39cc0e09c887ee16376"
+		},
 		{
 			"ImportPath": "code.google.com/p/go-netrc/netrc",
 			"Comment": "null-12",
@@ -24,10 +29,14 @@
 			"ImportPath": "github.com/howeyc/gopass",
 			"Rev": "4cf66881dcc3d6f0071eb6473d95c39e460de696"
 		},
+		{
+			"ImportPath": "github.com/inconshreveable/go-update",
+			"Rev": "3f0466666779bd2143f368a207b0641f0ed536e8"
+		},
 		{
 			"ImportPath": "github.com/jingweno/go-octokit/octokit",
-			"Comment": "v0.4.0-27-g1dbe02b",
+			"Comment": "v0.4.0-41-g85bc6b5",
-			"Rev": "1dbe02be6d8bd53eaf3869d97b1746ff82e2a807"
+			"Rev": "85bc6b536f8e8cb24d4db262e4dfea3d7d2d8138"
 		},
 		{
 			"ImportPath": "github.com/jtacoma/uritemplates",

Godeps/_workspace/src/bitbucket.org/kardianos/osext/LICENSE

@@ -0,0 +1,20 @@
+Copyright (c) 2012 Daniel Theophanes
+
+This software is provided 'as-is', without any express or implied
+warranty. In no event will the authors be held liable for any damages
+arising from the use of this software.
+
+Permission is granted to anyone to use this software for any purpose,
+including commercial applications, and to alter it and redistribute it
+freely, subject to the following restrictions:
+
+   1. The origin of this software must not be misrepresented; you must not
+   claim that you wrote the original software. If you use this software
+   in a product, an acknowledgment in the product documentation would be
+   appreciated but is not required.
+
+   2. Altered source versions must be plainly marked as such, and must not be
+   misrepresented as being the original software.
+
+   3. This notice may not be removed or altered from any source
+   distribution.

Godeps/_workspace/src/bitbucket.org/kardianos/osext/osext.go

@@ -0,0 +1,32 @@
+// Copyright 2012 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.
+
+// Extensions to the standard "os" package.
+package osext
+
+import "path/filepath"
+
+// Executable returns an absolute path that can be used to
+// re-invoke the current program.
+// It may not be valid after the current program exits.
+func Executable() (string, error) {
+	p, err := executable()
+	return filepath.Clean(p), err
+}
+
+// Returns same path as Executable, returns just the folder
+// path. Excludes the executable name.
+func ExecutableFolder() (string, error) {
+	p, err := Executable()
+	if err != nil {
+		return "", err
+	}
+	folder, _ := filepath.Split(p)
+	return folder, nil
+}
+
+// Depricated. Same as Executable().
+func GetExePath() (exePath string, err error) {
+	return Executable()
+}

Godeps/_workspace/src/bitbucket.org/kardianos/osext/osext_plan9.go

@@ -0,0 +1,16 @@
+// Copyright 2012 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.
+
+package osext
+
+import "syscall"
+
+func executable() (string, error) {
+	f, err := Open("/proc/" + itoa(Getpid()) + "/text")
+	if err != nil {
+		return "", err
+	}
+	defer f.Close()
+	return syscall.Fd2path(int(f.Fd()))
+}

Godeps/_workspace/src/bitbucket.org/kardianos/osext/osext_procfs.go

@@ -0,0 +1,25 @@
+// Copyright 2012 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.
+
+// +build linux netbsd openbsd
+
+package osext
+
+import (
+	"errors"
+	"os"
+	"runtime"
+)
+
+func executable() (string, error) {
+	switch runtime.GOOS {
+	case "linux":
+		return os.Readlink("/proc/self/exe")
+	case "netbsd":
+		return os.Readlink("/proc/curproc/exe")
+	case "openbsd":
+		return os.Readlink("/proc/curproc/file")
+	}
+	return "", errors.New("ExecPath not implemented for " + runtime.GOOS)
+}

Godeps/_workspace/src/bitbucket.org/kardianos/osext/osext_sysctl.go

@@ -0,0 +1,82 @@
+// Copyright 2012 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.
+
+// +build darwin freebsd
+
+package osext
+
+import (
+	"os"
+	"path/filepath"
+	"runtime"
+	"syscall"
+	"unsafe"
+)
+
+var startUpcwd, getwdError = os.Getwd()
+
+func executable() (string, error) {
+	var mib [4]int32
+	switch runtime.GOOS {
+	case "freebsd":
+		mib = [4]int32{1 /* CTL_KERN */, 14 /* KERN_PROC */, 12 /* KERN_PROC_PATHNAME */, -1}
+	case "darwin":
+		mib = [4]int32{1 /* CTL_KERN */, 38 /* KERN_PROCARGS */, int32(os.Getpid()), -1}
+	}
+
+	n := uintptr(0)
+	// get length
+	_, _, err := syscall.Syscall6(syscall.SYS___SYSCTL, uintptr(unsafe.Pointer(&mib[0])), 4, 0, uintptr(unsafe.Pointer(&n)), 0, 0)
+	if err != 0 {
+		return "", err
+	}
+	if n == 0 { // shouldn't happen
+		return "", nil
+	}
+	buf := make([]byte, n)
+	_, _, err = syscall.Syscall6(syscall.SYS___SYSCTL, uintptr(unsafe.Pointer(&mib[0])), 4, uintptr(unsafe.Pointer(&buf[0])), uintptr(unsafe.Pointer(&n)), 0, 0)
+	if err != 0 {
+		return "", err
+	}
+	if n == 0 { // shouldn't happen
+		return "", nil
+	}
+	for i, v := range buf {
+		if v == 0 {
+			buf = buf[:i]
+			break
+		}
+	}
+	var strpath string
+	if buf[0] != '/' {
+		var e error
+		if strpath, e = getAbs(buf); e != nil {
+			return strpath, e
+		}
+	} else {
+		strpath = string(buf)
+	}
+	// darwin KERN_PROCARGS may return the path to a symlink rather than the
+	// actual executable
+	if runtime.GOOS == "darwin" {
+		if strpath, err := filepath.EvalSymlinks(strpath); err != nil {
+			return strpath, err
+		}
+	}
+	return strpath, nil
+}
+
+func getAbs(buf []byte) (string, error) {
+	if getwdError != nil {
+		return string(buf), getwdError
+	} else {
+		if buf[0] == '.' {
+			buf = buf[1:]
+		}
+		if startUpcwd[len(startUpcwd)-1] != '/' && buf[0] != '/' {
+			return startUpcwd + "/" + string(buf), nil
+		}
+		return startUpcwd + string(buf), nil
+	}
+}

Godeps/_workspace/src/bitbucket.org/kardianos/osext/osext_test.go

@@ -0,0 +1,79 @@
+// Copyright 2012 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.
+
+// +build darwin linux freebsd netbsd windows
+
+package osext
+
+import (
+	"fmt"
+	"os"
+	oexec "os/exec"
+	"path/filepath"
+	"runtime"
+	"testing"
+)
+
+const execPath_EnvVar = "OSTEST_OUTPUT_EXECPATH"
+
+func TestExecPath(t *testing.T) {
+	ep, err := Executable()
+	if err != nil {
+		t.Fatalf("ExecPath failed: %v", err)
+	}
+	// we want fn to be of the form "dir/prog"
+	dir := filepath.Dir(filepath.Dir(ep))
+	fn, err := filepath.Rel(dir, ep)
+	if err != nil {
+		t.Fatalf("filepath.Rel: %v", err)
+	}
+	cmd := &oexec.Cmd{}
+	// make child start with a relative program path
+	cmd.Dir = dir
+	cmd.Path = fn
+	// forge argv[0] for child, so that we can verify we could correctly
+	// get real path of the executable without influenced by argv[0].
+	cmd.Args = []string{"-", "-test.run=XXXX"}
+	cmd.Env = []string{fmt.Sprintf("%s=1", execPath_EnvVar)}
+	out, err := cmd.CombinedOutput()
+	if err != nil {
+		t.Fatalf("exec(self) failed: %v", err)
+	}
+	outs := string(out)
+	if !filepath.IsAbs(outs) {
+		t.Fatalf("Child returned %q, want an absolute path", out)
+	}
+	if !sameFile(outs, ep) {
+		t.Fatalf("Child returned %q, not the same file as %q", out, ep)
+	}
+}
+
+func sameFile(fn1, fn2 string) bool {
+	fi1, err := os.Stat(fn1)
+	if err != nil {
+		return false
+	}
+	fi2, err := os.Stat(fn2)
+	if err != nil {
+		return false
+	}
+	return os.SameFile(fi1, fi2)
+}
+
+func init() {
+	if e := os.Getenv(execPath_EnvVar); e != "" {
+		// first chdir to another path
+		dir := "/"
+		if runtime.GOOS == "windows" {
+			dir = filepath.VolumeName(".")
+		}
+		os.Chdir(dir)
+		if ep, err := Executable(); err != nil {
+			fmt.Fprint(os.Stderr, "ERROR: ", err)
+		} else {
+			fmt.Fprint(os.Stderr, ep)
+		}
+		os.Exit(0)
+	}
+}

Godeps/_workspace/src/bitbucket.org/kardianos/osext/osext_windows.go

@@ -0,0 +1,34 @@
+// Copyright 2012 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.
+
+package osext
+
+import (
+	"syscall"
+	"unicode/utf16"
+	"unsafe"
+)
+
+var (
+	kernel                = syscall.MustLoadDLL("kernel32.dll")
+	getModuleFileNameProc = kernel.MustFindProc("GetModuleFileNameW")
+)
+
+// GetModuleFileName() with hModule = NULL
+func executable() (exePath string, err error) {
+	return getModuleFileName()
+}
+
+func getModuleFileName() (string, error) {
+	var n uint32
+	b := make([]uint16, syscall.MAX_PATH)
+	size := uint32(len(b))
+
+	r0, _, e1 := getModuleFileNameProc.Call(0, uintptr(unsafe.Pointer(&b[0])), uintptr(size))
+	n = uint32(r0)
+	if n == 0 {
+		return "", e1
+	}
+	return string(utf16.Decode(b[0:n])), nil
+}

Godeps/_workspace/src/github.com/inconshreveable/go-update/README

@@ -0,0 +1,137 @@
+PACKAGE DOCUMENTATION
+
+package update
+    import "github.com/inconshreveable/go-update"
+
+    Package update allows a program to "self-update", replacing its
+    executable file with new bytes.
+
+    Package update provides the facility to create user experiences like
+    auto-updating or user-approved updates which manifest as user prompts in
+    commercial applications with copy similar to "Restart to being using the
+    new version of X".
+
+    Updating your program to a new version is as easy as:
+
+	err := update.FromUrl("http://release.example.com/2.0/myprogram")
+	if err != nil {
+		fmt.Printf("Update failed: %v", err)
+	}
+
+    The most low-level API is FromStream() which updates the current
+    executable with the bytes read from an io.Reader.
+
+    Additional APIs are provided for common update strategies which include
+    updating from a file with FromFile() and updating from the internet with
+    FromUrl().
+
+    Using the more advaced Download.UpdateFromUrl() API gives you the
+    ability to resume an interrupted download to enable large updates to
+    complete even over intermittent or slow connections. This API also
+    enables more fine-grained control over how the update is downloaded from
+    the internet as well as access to download progress,
+
+
+VARIABLES
+
+var (
+    // Returned when the remote server indicates that no download is available
+    UpdateUnavailable error
+)
+
+
+FUNCTIONS
+
+func FromFile(filepath string) (err error)
+    FromFile reads the contents of the given file and uses them to update
+    the current program's executable file by calling FromStream().
+
+func FromStream(newBinary io.Reader) (err error)
+    FromStream reads the contents of the supplied io.Reader newBinary and
+    uses them to update the current program's executable file.
+
+    FromStream performs the following actions to ensure a cross-platform
+    safe update:
+
+    - Renames the current program's executable file from
+    /path/to/program-name to /path/to/.program-name.old
+
+    - Opens the now-empty path /path/to/program-name with mode 0755 and
+    copies the contents of newBinary into the file.
+
+    - If the copy is successful, it erases /path/to/.program.old. If this
+    operation fails, no error is reported.
+
+    - If the copy is unsuccessful, it attempts to rename
+    /path/to/.program-name.old back to /path/to/program-name. If this
+    operation fails, the error is not reported in order to not mask the
+    error that caused the rename recovery attempt.
+
+func FromUrl(url string) error
+    FromUrl downloads the contents of the given url and uses them to update
+    the current program's executable file. It is a convenience function
+    which is equivalent to
+
+	NewDownload().UpdateFromUrl(url)
+
+    See Download.UpdateFromUrl for more details.
+
+
+TYPES
+
+type Download struct {
+    // net/http.Client to use when downloading the update.
+    // If nil, a default http.Client is used
+    HttpClient *http.Client
+
+    // Path on the file system to dowload the update to
+    // If empty, a temporary file is used.
+    // After the download begins, this path will be set
+    // so that the client can use it to resume aborted
+    // downloads
+    Path string
+
+    // Progress returns the percentage of the download
+    // completed as an integer between 0 and 100
+    Progress chan (int)
+
+    // HTTP Method to use in the download request. Default is "GET"
+    Method string
+}
+    Type Download encapsulates the necessary parameters and state needed to
+    download an update from the internet. Create an instance with the
+    NewDownload() factory function.
+
+
+func NewDownload() *Download
+    NewDownload initializes a new Download object
+
+
+func (d *Download) UpdateFromUrl(url string) (err error)
+    UpdateFromUrl downloads the given url from the internet to a file on
+    disk and then calls FromStream() to update the current program's
+    executable file with the contents of that file.
+
+    If the update is successful, the downloaded file will be erased from
+    disk. Otherwise, it will remain in d.Path to allow the download to
+    resume later or be skipped entirely.
+
+    Only HTTP/1.1 servers that implement the Range header are supported.
+
+    UpdateFromUrl() uses HTTP status codes to determine what action to take.
+
+    - The HTTP server should return 200 or 206 for the update to be
+    downloaded.
+
+    - The HTTP server should return 204 if no update is available at this
+    time. This will cause UpdateFromUrl to return the error
+    UpdateUnavailable.
+
+    - If the HTTP server returns a 3XX redirect, it will be followed
+    according to d.HttpClient's redirect policy.
+
+    - Any other HTTP status code will cause UpdateFromUrl to return an
+    error.
+
+
+

Godeps/_workspace/src/github.com/inconshreveable/go-update/update.go

@@ -0,0 +1,455 @@
+/*
+Package update allows a program to "self-update", replacing its executable file
+with new bytes.
+
+Package update provides the facility to create user experiences like auto-updating
+or user-approved updates which manifest as user prompts in commercial applications
+with copy similar to "Restart to being using the new version of X".
+
+Updating your program to a new version is as easy as:
+
+	err := update.FromUrl("http://release.example.com/2.0/myprogram")
+	if err != nil {
+		fmt.Printf("Update failed: %v", err)
+	}
+
+The most low-level API is FromStream() which updates the current executable
+with the bytes read from an io.Reader.
+
+Additional APIs are provided for common update strategies which include
+updating from a file with FromFile() and updating from the internet with
+FromUrl().
+
+Using the more advaced Download.UpdateFromUrl() API gives you the ability
+to resume an interrupted download to enable large updates to complete even
+over intermittent or slow connections. This API also enables more fine-grained
+control over how the update is downloaded from the internet as well as access to
+download progress,
+*/
+package update
+
+import (
+	"compress/gzip"
+	"fmt"
+	"bitbucket.org/kardianos/osext"
+	"io"
+	"io/ioutil"
+	"net/http"
+	"os"
+	"path/filepath"
+	"runtime"
+)
+
+type MeteredReader struct {
+	rd        io.ReadCloser
+	totalSize int64
+	progress  chan int
+	totalRead int64
+	ticks     int64
+}
+
+func (m *MeteredReader) Close() error {
+	return m.rd.Close()
+}
+
+func (m *MeteredReader) Read(b []byte) (n int, err error) {
+	chunkSize := (m.totalSize / 100) + 1
+	lenB := int64(len(b))
+
+	var nChunk int
+	for start := int64(0); start < lenB; start += int64(nChunk) {
+		end := start + chunkSize
+		if end > lenB {
+			end = lenB
+		}
+
+		nChunk, err = m.rd.Read(b[start:end])
+
+		n += nChunk
+		m.totalRead += int64(nChunk)
+
+		if m.totalRead > (m.ticks * chunkSize) {
+			m.ticks += 1
+			// try to send on channel, but don't block if it's full
+			select {
+			case m.progress <- int(m.ticks + 1):
+			default:
+			}
+
+			// give the progress channel consumer a chance to run
+			runtime.Gosched()
+		}
+
+		if err != nil {
+			return
+		}
+	}
+
+	return
+}
+
+// We wrap the round tripper when making requests
+// because we need to add headers to the requests we make
+// even when they are requests made after a redirect
+type RoundTripper struct {
+	RoundTripFn func(*http.Request) (*http.Response, error)
+}
+
+func (rt *RoundTripper) RoundTrip(r *http.Request) (*http.Response, error) {
+	return rt.RoundTripFn(r)
+}
+
+// Type Download encapsulates the necessary parameters and state
+// needed to download an update from the internet. Create an instance
+// with the NewDownload() factory function.
+//
+// You may only use a Download once,
+type Download struct {
+	// net/http.Client to use when downloading the update.
+	// If nil, a default http.Client is used
+	HttpClient *http.Client
+
+	// Path on the file system to dowload the update to
+	// If empty, a temporary file is used.
+	// After the download begins, this path will be set
+	// so that the client can use it to resume aborted
+	// downloads
+	Path string
+
+	// Progress returns the percentage of the download
+	// completed as an integer between 0 and 100
+	Progress chan (int)
+
+	// HTTP Method to use in the download request. Default is "GET"
+	Method string
+
+	// HTTP URL to issue the download request to
+	Url string
+
+	// Set to true when the server confirms a new version is available
+	// even if the updating process encounters an error later on
+	Available bool
+}
+
+// NewDownload initializes a new Download object
+func NewDownload(url string) *Download {
+	return &Download{
+		HttpClient: new(http.Client),
+		Progress:   make(chan int),
+		Method:     "GET",
+		Url: url,
+	}
+}
+
+func (d *Download) sharedHttp(offset int64) (resp *http.Response, err error) {
+	// create the download request
+	req, err := http.NewRequest(d.Method, d.Url, nil)
+	if err != nil {
+		return
+	}
+
+	// we have to add headers like this so they get used across redirects
+	trans := d.HttpClient.Transport
+	if trans == nil {
+		trans = http.DefaultTransport
+	}
+
+	d.HttpClient.Transport = &RoundTripper{
+		RoundTripFn: func(r *http.Request) (*http.Response, error) {
+			// add header for download continuation
+			if offset > 0 {
+				r.Header.Add("Range", fmt.Sprintf("%d-", offset))
+			}
+
+			// ask for gzipped content so that net/http won't unzip it for us
+			// and destroy the content length header we need for progress calculations
+			r.Header.Add("Accept-Encoding", "gzip")
+
+			return trans.RoundTrip(r)
+		},
+	}
+
+	// issue the download request
+	return d.HttpClient.Do(req)
+}
+
+func (d *Download) Check() (available bool, err error) {
+	resp, err := d.sharedHttp(0)
+	if err != nil {
+		return
+	}
+	resp.Body.Close()
+
+	switch resp.StatusCode {
+	// ok
+	case 200, 206:
+		available = true
+
+	// no update available
+	case 204:
+		available = false
+
+	// server error
+	default:
+		err = fmt.Errorf("Non 2XX response when downloading update: %s", resp.Status)
+		return
+	}
+
+	return
+}
+
+// Get() downloads the given url from the internet to a file on disk
+// and then calls FromStream() to update the current program's executable file
+// with the contents of that file.
+//
+// If the update is successful, the downloaded file will be erased from disk.
+// Otherwise, it will remain in d.Path to allow the download to resume later
+// or be skipped entirely.
+//
+// Only HTTP/1.1 servers that implement the Range header support resuming a
+// partially completed download.
+//
+// UpdateFromUrl() uses HTTP status codes to determine what action to take.
+//
+// - The HTTP server should return 200 or 206 for the update to be downloaded.
+//
+// - The HTTP server should return 204 if no update is available at this time.
+//
+// - If the HTTP server returns a 3XX redirect, it will be followed
+// according to d.HttpClient's redirect policy.
+//
+// - Any other HTTP status code will cause UpdateFromUrl to return an error.
+func (d *Download) Get() (err error) {
+	var offset int64 = 0
+	var fp *os.File
+
+	// Close the progress channel whenever this function completes
+	defer close(d.Progress)
+
+	// open a file where we will stream the downloaded update to
+	// we do this first because if the caller specified a non-empty dlpath
+	// we need to determine how large it is in order to resume the download
+	if d.Path == "" {
+		// no dlpath specified, use a random tempfile
+		fp, err = ioutil.TempFile("", "update")
+		if err != nil {
+			return
+		}
+		defer fp.Close()
+
+		// remember the path
+		d.Path = fp.Name()
+	} else {
+		fp, err = os.OpenFile(d.Path, os.O_CREATE|os.O_RDWR|os.O_APPEND, 0600)
+		if err != nil {
+			return
+		}
+		defer fp.Close()
+
+		// determine the file size so we can resume the download, if possible
+		var fi os.FileInfo
+		fi, err = fp.Stat()
+		if err != nil {
+			return
+		}
+
+		offset = fi.Size()
+	}
+
+	// start downloading the file
+	resp, err := d.sharedHttp(offset)
+	if err != nil {
+		return
+	}
+	defer resp.Body.Close()
+
+	switch resp.StatusCode {
+	// ok
+	case 200, 206:
+		d.Available = true
+
+	// no update available
+	case 204:
+		return
+
+	// server error
+	default:
+		err = fmt.Errorf("Non 2XX response when downloading update: %s", resp.Status)
+		return
+	}
+
+	// Determine how much we have to download
+	// net/http sets this to -1 when it is unknown
+	clength := resp.ContentLength
+
+	// Read the content from the response body
+	rd := resp.Body
+
+	// meter the rate at which we download content for
+	// progress reporting if we know how much to expect
+	if clength > 0 {
+		rd = &MeteredReader{rd: rd, totalSize: clength, progress: d.Progress}
+	}
+
+	// Decompress the content if necessary
+	if resp.Header.Get("Content-Encoding") == "gzip" {
+		rd, err = gzip.NewReader(rd)
+		if err != nil {
+			return
+		}
+	}
+
+	// Download the update
+	_, err = io.Copy(fp, rd)
+	if err != nil {
+		return
+	}
+
+	return
+}
+
+func (d *Download) GetAndUpdate() (err error, errRecover error) {
+	// check before we download if this will work
+	if err = SanityCheck(); err != nil {
+		// keep the contract that d.Progress will close whenever Get() terminates
+		close(d.Progress)
+		return
+	}
+
+	// download the update
+	if err = d.Get(); err != nil || !d.Available {
+		return
+	}
+
+	// apply the update
+	if err, errRecover = FromFile(d.Path); err != nil || errRecover != nil {
+		return
+	}
+
+	// remove the temporary file
+	os.Remove(d.Path)
+	return
+}
+
+// FromUrl downloads the contents of the given url and uses them to update
+// the current program's executable file. It is a convenience function which is equivalent to
+//
+// 	NewDownload(url).GetAndUpdate()
+//
+// See Download.Get() for more details.
+func FromUrl(url string) (err error, errRecover error) {
+	return NewDownload(url).GetAndUpdate()
+}
+
+// FromFile reads the contents of the given file and uses them
+// to update the current program's executable file by calling FromStream().
+func FromFile(filepath string) (err error, errRecover error) {
+	// open the new binary
+	fp, err := os.Open(filepath)
+	if err != nil {
+		return
+	}
+	defer fp.Close()
+
+	// do the update
+	return FromStream(fp)
+}
+
+// FromStream reads the contents of the supplied io.Reader newBinary
+// and uses them to update the current program's executable file.
+//
+// FromStream performs the following actions to ensure a cross-platform safe
+// update:
+//
+// - Creates a new file, /path/to/.program-name.new with mode 0755 and copies
+// the contents of newBinary into the file
+//
+// - Renames the current program's executable file from /path/to/program-name
+// to /path/to/.program-name.old
+//
+// - Renames /path/to/.program-name.new to /path/to/program-name
+//
+// - If the rename is successful, it erases /path/to/.program.old. If this operation
+// fails, no error is reported.
+//
+// - If the rename is unsuccessful, it attempts to rename /path/to/.program-name.old
+// back to /path/to/program-name. If this operation fails, the error is not reported
+// in order to not mask the error that caused the rename recovery attempt.
+func FromStream(newBinary io.Reader) (err error, errRecover error) {
+	// get the path to the executable
+	thisExecPath, err := osext.Executable()
+	if err != nil {
+		return
+	}
+
+	// get the directory the executable exists in
+	execDir := filepath.Dir(thisExecPath)
+	execName := filepath.Base(thisExecPath)
+
+	// Copy the contents of of newbinary to a the new executable file
+	newExecPath := filepath.Join(execDir, fmt.Sprintf(".%s.new", execName))
+	fp, err := os.OpenFile(newExecPath, os.O_CREATE|os.O_WRONLY|os.O_TRUNC, 0755)
+	if err != nil {
+		return
+	}
+	defer fp.Close()
+	_, err = io.Copy(fp, newBinary)
+
+	// if we don't call fp.Close(), windows won't let us move the new executable
+	// because the file will still be "in use"
+	fp.Close()
+
+	// this is where we'll move the executable to so that we can swap in the updated replacement
+	oldExecPath := filepath.Join(execDir, fmt.Sprintf(".%s.old", execName))
+
+	// delete any existing old exec file - this is necessary on Windows for two reasons:
+	// 1. after a successful update, windows can't remove the .old file because the process is still running
+	// 2. windows rename operations fail if the destination file already exists
+	_ = os.Remove(oldExecPath)
+
+	// move the existing executable to a new file in the same directory
+	err = os.Rename(thisExecPath, oldExecPath)
+	if err != nil {
+		return
+	}
+
+	// move the new exectuable in to become the new program
+	err = os.Rename(newExecPath, thisExecPath)
+
+	if err != nil {
+		// copy unsuccessful
+		errRecover = os.Rename(oldExecPath, thisExecPath)
+	} else {
+		// copy successful, remove the old binary
+		_ = os.Remove(oldExecPath)
+	}
+
+	return
+}
+
+// SanityCheck() attempts to determine whether an in-place executable update could
+// succeed by performing preliminary checks (to establish valid permissions, etc).
+// This helps avoid downloading updates when we know the update can't be successfully
+// applied later.
+func SanityCheck() (err error) {
+	// get the path to the executable
+	thisExecPath, err := osext.Executable()
+	if err != nil {
+		return
+	}
+
+	// get the directory the executable exists in
+	execDir := filepath.Dir(thisExecPath)
+	execName := filepath.Base(thisExecPath)
+
+	// attempt to open a file in the executable's directory
+	newExecPath := filepath.Join(execDir, fmt.Sprintf(".%s.new", execName))
+	fp, err := os.OpenFile(newExecPath, os.O_CREATE|os.O_WRONLY|os.O_TRUNC, 0755)
+	if err != nil {
+		return
+	}
+	fp.Close()
+
+	_ = os.Remove(newExecPath)
+	return
+}

Godeps/_workspace/src/github.com/jingweno/go-octokit/octokit/client.go

@@ -44,65 +44,49 @@ func (c *Client) NewRequest(urlStr string) (req *Request, err error) {
 }
 
 func (c *Client) head(url *url.URL, output interface{}) (result *Result) {
-	req, err := c.NewRequest(url.String())
+	return sendRequest(c, url, func(req *Request) (*Response, error) {
-	if err != nil {
+		return req.Head(output)
-		result = newResult(nil, err)
+	})
-		return
-	}
-
-	resp, err := req.Head(output)
-	result = newResult(resp, err)
-
-	return
 }
 
 func (c *Client) get(url *url.URL, output interface{}) (result *Result) {
-	req, err := c.NewRequest(url.String())
+	return sendRequest(c, url, func(req *Request) (*Response, error) {
-	if err != nil {
+		return req.Get(output)
-		result = newResult(nil, err)
+	})
-		return
-	}
-
-	resp, err := req.Get(output)
-	result = newResult(resp, err)
-
-	return
 }
 
 func (c *Client) post(url *url.URL, input interface{}, output interface{}) (result *Result) {
-	req, err := c.NewRequest(url.String())
+	return sendRequest(c, url, func(req *Request) (*Response, error) {
-	if err != nil {
+		return req.Post(input, output)
-		result = newResult(nil, err)
+	})
-		return
-	}
-
-	resp, err := req.Post(input, output)
-	result = newResult(resp, err)
-
-	return
 }
 
-func (c *Client) put(url *url.URL, input interface{}, output interface{}) (result *Result) {
+func (c *Client) put(url *url.URL, input interface{}, output interface{}) *Result {
-	req, err := c.NewRequest(url.String())
+	return sendRequest(c, url, func(req *Request) (*Response, error) {
-	if err != nil {
+		return req.Put(input, output)
-		result = newResult(nil, err)
+	})
-		return
-	}
-
-	resp, err := req.Put(input, output)
-	result = newResult(resp, err)
-
-	return
 }
 
 func (c *Client) delete(url *url.URL, output interface{}) (result *Result) {
+	return sendRequest(c, url, func(req *Request) (*Response, error) {
+		return req.Delete(output)
+	})
+}
+
+func (c *Client) patch(url *url.URL, input interface{}, output interface{}) (result *Result) {
+	return sendRequest(c, url, func(req *Request) (*Response, error) {
+		return req.Patch(input, output)
+	})
+}
+
+func sendRequest(c *Client, url *url.URL, fn func(r *Request) (*Response, error)) (result *Result) {
 	req, err := c.NewRequest(url.String())
 	if err != nil {
 		result = newResult(nil, err)
 		return
 	}
 
-	resp, err := req.Delete(output)
+	resp, err := fn(req)
 	result = newResult(resp, err)
 
 	return

Godeps/_workspace/src/github.com/jingweno/go-octokit/octokit/issues.go

@@ -31,6 +31,16 @@ func (i *IssuesService) All() (issues []Issue, result *Result) {
 	return
 }
 
+func (i *IssuesService) Create(params interface{}) (issue *Issue, result *Result) {
+	result = i.client.post(i.URL, params, &issue)
+	return
+}
+
+func (i *IssuesService) Update(params interface{}) (issue *Issue, result *Result) {
+	result = i.client.patch(i.URL, params, &issue)
+	return
+}
+
 type Issue struct {
 	*hypermedia.HALResource
 
@@ -69,3 +79,12 @@ type Issue struct {
 	ClosedAt  *time.Time `json:"closed_at,omitempty"`
 	UpdatedAt time.Time  `json:"updated_at,omitempty"`
 }
+
+type IssueParams struct {
+	Title     string   `json:"title,omitempty"`
+	Body      string   `json:"body,omitempty"`
+	Assignee  string   `json:"assignee,omitempty"`
+	State     string   `json:"state,omitempty"`
+	Milestone uint64   `json:"milestone,omitempty"`
+	Labels    []string `json:"labels,omitempty"`
+}

Godeps/_workspace/src/github.com/jingweno/go-octokit/octokit/issues_test.go

@@ -45,6 +45,52 @@ func TestIssuesService_One(t *testing.T) {
 	validateIssue(t, *issue)
 }
 
+func TestIssuesService_Create(t *testing.T) {
+	setup()
+	defer tearDown()
+
+	mux.HandleFunc("/repos/octocat/Hello-World/issues", func(w http.ResponseWriter, r *http.Request) {
+		testMethod(t, r, "POST")
+		testBody(t, r, "{\"title\":\"title\",\"body\":\"body\"}\n")
+		respondWithJSON(w, loadFixture("issue.json"))
+	})
+
+	url, err := RepoIssuesURL.Expand(M{"owner": "octocat", "repo": "Hello-World"})
+	assert.Equal(t, nil, err)
+
+	params := IssueParams{
+		Title: "title",
+		Body:  "body",
+	}
+	issue, result := client.Issues(url).Create(params)
+
+	assert.T(t, !result.HasError())
+	validateIssue(t, *issue)
+}
+
+func TestIssuesService_Update(t *testing.T) {
+	setup()
+	defer tearDown()
+
+	mux.HandleFunc("/repos/octocat/Hello-World/issues/1347", func(w http.ResponseWriter, r *http.Request) {
+		testMethod(t, r, "PATCH")
+		testBody(t, r, "{\"title\":\"title\",\"body\":\"body\"}\n")
+		respondWithJSON(w, loadFixture("issue.json"))
+	})
+
+	url, err := RepoIssuesURL.Expand(M{"owner": "octocat", "repo": "Hello-World", "number": 1347})
+	assert.Equal(t, nil, err)
+
+	params := IssueParams{
+		Title: "title",
+		Body:  "body",
+	}
+	issue, result := client.Issues(url).Update(params)
+
+	assert.T(t, !result.HasError())
+	validateIssue(t, *issue)
+}
+
 func validateIssue(t *testing.T, issue Issue) {
 
 	assert.Equal(t, "https://api.github.com/repos/octocat/Hello-World/issues/1347", issue.URL)

Godeps/_workspace/src/github.com/jingweno/go-octokit/octokit/releases.go

@@ -63,6 +63,11 @@ func (r *ReleasesService) Create(params interface{}) (release *Release, result *
 	return
 }
 
+func (r *ReleasesService) Update(params interface{}) (release *Release, result *Result) {
+	result = r.client.patch(r.URL, params, &release)
+	return
+}
+
 type ReleaseParams struct {
 	TagName         string `json:"tag_name,omitempty"`
 	TargetCommitish string `json:"target_commitish,omitempty"`

Godeps/_workspace/src/github.com/jingweno/go-octokit/octokit/releases_test.go

@@ -75,3 +75,26 @@ func TestCreateRelease(t *testing.T) {
 	assert.T(t, !result.HasError())
 	assert.Equal(t, "v1.0.0", release.TagName)
 }
+
+func TestUpdateRelease(t *testing.T) {
+	setup()
+	defer tearDown()
+
+	mux.HandleFunc("/repos/octokit/Hello-World/releases/123", func(w http.ResponseWriter, r *http.Request) {
+		testMethod(t, r, "PATCH")
+		testBody(t, r, "{\"tag_name\":\"v1.0.0\",\"target_commitish\":\"master\"}\n")
+		respondWithJSON(w, loadFixture("create_release.json"))
+	})
+
+	url, err := ReleasesURL.Expand(M{"owner": "octokit", "repo": "Hello-World", "id": "123"})
+	assert.Equal(t, nil, err)
+
+	params := Release{
+		TagName:         "v1.0.0",
+		TargetCommitish: "master",
+	}
+	release, result := client.Releases(url).Update(params)
+
+	assert.T(t, !result.HasError())
+	assert.Equal(t, "v1.0.0", release.TagName)
+}

Godeps/_workspace/src/github.com/jingweno/go-octokit/octokit/request.go

@@ -10,27 +10,32 @@ type Request struct {
 }
 
 func (r *Request) Head(output interface{}) (resp *Response, err error) {
-	resp, err = r.do("HEAD", nil, output)
+	resp, err = r.do(sawyer.HeadMethod, nil, output)
 	return
 }
 
 func (r *Request) Get(output interface{}) (resp *Response, err error) {
-	resp, err = r.do("GET", nil, output)
+	resp, err = r.do(sawyer.GetMethod, nil, output)
 	return
 }
 
 func (r *Request) Post(input interface{}, output interface{}) (resp *Response, err error) {
-	resp, err = r.do("POST", input, output)
+	resp, err = r.do(sawyer.PostMethod, input, output)
 	return
 }
 
 func (r *Request) Put(input interface{}, output interface{}) (resp *Response, err error) {
-	resp, err = r.do("PUT", input, output)
+	resp, err = r.do(sawyer.PutMethod, input, output)
 	return
 }
 
 func (r *Request) Delete(output interface{}) (resp *Response, err error) {
-	resp, err = r.do("DELETE", nil, output)
+	resp, err = r.do(sawyer.DeleteMethod, nil, output)
+	return
+}
+
+func (r *Request) Patch(input interface{}, output interface{}) (resp *Response, err error) {
+	resp, err = r.do(sawyer.PatchMethod, input, output)
 	return
 }
 
@@ -50,6 +55,8 @@ func (r *Request) do(method string, input interface{}, output interface{}) (resp
 		r.sawyerReq.SetBody(mtype, input)
 		sawyerResp = r.sawyerReq.Put()
 	case sawyer.PatchMethod:
+		mtype, _ := mediatype.Parse(defaultMediaType)
+		r.sawyerReq.SetBody(mtype, input)
 		sawyerResp = r.sawyerReq.Patch()
 	case sawyer.DeleteMethod:
 		sawyerResp = r.sawyerReq.Delete()

Godeps/_workspace/src/github.com/jingweno/go-octokit/octokit/users.go

@@ -44,6 +44,7 @@ func (u *UsersService) All() (users []User, result *Result) {
 type User struct {
 	*hypermedia.HALResource
 
+	SiteAdmin         bool       `json:"site_admin,omitempty"`
 	Login             string     `json:"login,omitempty"`
 	ID                int        `json:"id,omitempty"`
 	AvatarURL         string     `json:"avatar_url,omitempty"`
@@ -57,7 +58,6 @@ type User struct {
 	Hireable          bool       `json:"hireable,omitempty"`
 	Bio               string     `json:"bio,omitempty"`
 	PublicRepos       int        `json:"public_repos,omitempty"`
-	PublicGists       int        `json:"public_gists,omitempty"`
 	Followers         int        `json:"followers,omitempty"`
 	Following         int        `json:"following,omitempty"`
 	HTMLURL           string     `json:"html_url,omitempty"`

Godeps/_workspace/src/github.com/jingweno/go-octokit/octokit/users_test.go

@@ -25,10 +25,10 @@ func TestUsersService_GetCurrentUser(t *testing.T) {
 	assert.Equal(t, "jingweno", user.Login)
 	assert.Equal(t, "jingweno@gmail.com", user.Email)
 	assert.Equal(t, "User", user.Type)
-	assert.Equal(t, 3, user.Following)
+	assert.Equal(t, 17, user.Following)
-	assert.Equal(t, 19, user.Followers)
+	assert.Equal(t, 28, user.Followers)
-	assert.Equal(t, 80, user.PublicRepos)
+	assert.Equal(t, 90, user.PublicRepos)
-	assert.Equal(t, 25, user.PublicGists)
+	assert.Equal(t, false, user.SiteAdmin)
 	assert.Equal(t, "https://api.github.com/users/jingweno/repos", string(user.ReposURL))
 }
 

commands/commands.go

@@ -90,6 +90,7 @@ func All() []*Command {
 	all = append(all, cmdAlias)
 	all = append(all, cmdVersion)
 	all = append(all, cmdHelp)
+	all = append(all, cmdUpdate)
 
 	return all
 }

commands/help.go

@@ -86,6 +86,7 @@ GitHub Commands:
    issue          Manipulate issues (beta)
 
 See 'git help <command>' for more information on a specific command.
+Run 'git update' to update to the latest version of gh.
 `
 
 func printUsage() {

commands/update.go

@@ -0,0 +1,154 @@
+package commands
+
+import (
+	"archive/zip"
+	"fmt"
+	updater "github.com/inconshreveable/go-update"
+	"github.com/jingweno/gh/github"
+	"github.com/jingweno/gh/utils"
+	"io"
+	"io/ioutil"
+	"net/http"
+	"os"
+	"path/filepath"
+	"runtime"
+	"strings"
+)
+
+var cmdUpdate = &Command{
+	Run:   update,
+	Usage: "update",
+	Short: "Update gh",
+	Long: `Update gh to the latest version.
+
+Examples:
+  git update
+`,
+}
+
+func update(cmd *Command, args *Args) {
+	err := doUpdate()
+	utils.Check(err)
+	os.Exit(0)
+}
+
+func doUpdate() (err error) {
+	client := github.NewClient(github.GitHubHost)
+	releases, err := client.Releases(github.NewProject("jingweno", "gh", github.GitHubHost))
+	if err != nil {
+		err = fmt.Errorf("Error fetching releases: %s", err)
+		return
+	}
+
+	latestRelease := releases[0]
+	tagName := latestRelease.TagName
+	version := strings.TrimPrefix(tagName, "v")
+	if version == Version {
+		err = fmt.Errorf("You're already on the latest version: %s", Version)
+		return
+	}
+
+	fmt.Printf("Updating gh to release %s...\n", version)
+	downloadURL := fmt.Sprintf("https://github.com/jingweno/gh/releases/download/%s/gh_%s-snapshot_%s_%s.zip", tagName, version, runtime.GOOS, runtime.GOARCH)
+	path, err := downloadFile(downloadURL)
+	if err != nil {
+		err = fmt.Errorf("Can't download update from %s to %s", downloadURL, path)
+		return
+	}
+
+	exec, err := unzipExecutable(path)
+	if err != nil {
+		err = fmt.Errorf("Can't unzip gh executable: %s", err)
+		return
+	}
+
+	err, _ = updater.FromFile(exec)
+	if err == nil {
+		fmt.Println("Done!")
+	}
+
+	return
+}
+
+func unzipExecutable(path string) (exec string, err error) {
+	rc, err := zip.OpenReader(path)
+	if err != nil {
+		err = fmt.Errorf("Can't open zip file %s: %s", path, err)
+		return
+	}
+	defer rc.Close()
+
+	for _, file := range rc.File {
+		if !strings.HasPrefix(file.Name, "gh") {
+			continue
+		}
+
+		dir := filepath.Dir(path)
+		exec, err = unzipFile(file, dir)
+		break
+	}
+
+	if exec == "" && err == nil {
+		err = fmt.Errorf("No gh executable is found in %s", path)
+	}
+
+	return
+}
+
+func unzipFile(file *zip.File, to string) (exec string, err error) {
+	frc, err := file.Open()
+	if err != nil {
+		err = fmt.Errorf("Can't open zip entry %s when reading: %s", file.Name, err)
+		return
+	}
+	defer frc.Close()
+
+	dest := filepath.Join(to, filepath.Base(file.Name))
+	f, err := os.Create(dest)
+	if err != nil {
+		return
+	}
+	defer f.Close()
+
+	copied, err := io.Copy(f, frc)
+	if err != nil {
+		return
+	}
+
+	if uint32(copied) != file.UncompressedSize {
+		err = fmt.Errorf("Zip entry %s is corrupted", file.Name)
+		return
+	}
+
+	exec = f.Name()
+
+	return
+}
+
+func downloadFile(url string) (path string, err error) {
+	dir, err := ioutil.TempDir("", "gh-update")
+	if err != nil {
+		return
+	}
+
+	file, err := os.Create(filepath.Join(dir, filepath.Base(url)))
+	if err != nil {
+		return
+	}
+	defer file.Close()
+
+	resp, err := http.Get(url)
+	if err != nil {
+		return
+	}
+	defer resp.Body.Close()
+
+	_, err = io.Copy(file, resp.Body)
+	if err != nil {
+		return
+	}
+
+	path = file.Name()
+
+	return
+}

linux.goxc.json

@@ -0,0 +1,12 @@
+{
+  "ConfigVersion": "0.9",
+  "BuildConstraints": "linux",
+  "TaskSettings": {
+    "archive-tar-gz": {
+      "platforms": "!linux"
+    },
+    "archive-zip": {
+      "platforms": "linux"
+    }
+  }
+}