move vendor to repo root

6 files changed, 707 insertions, 0 deletions

diff --git a/vendor/layeh.com/asar/builder.go b/vendor/layeh.com/asar/builder.go
new file mode 100644
index 0000000..8f926af
--- /dev/null
+++ b/vendor/layeh.com/asar/builder.go
@@ -0,0 +1,80 @@
+package asar // import "layeh.com/asar"
+
+import (
+	"io"
+	"strings"
+)
+
+// Builder helps construct an Entry.
+//
+// A builder keeps track of the root Entry and the active Entry. When entries
+// are added using the Add* methods, they are added as children to the active
+// Entry.
+type Builder struct {
+	root, current *Entry
+}
+
+// Root returns the root Entry.
+func (b *Builder) Root() *Entry {
+	return b.root
+}
+
+func (b *Builder) init() {
+	if b.root == nil {
+		b.root = &Entry{
+			Flags: FlagDir,
+		}
+		b.current = b.root
+	}
+}
+
+// Parent sets the active entry to the parent of the active Entry (i.e. moves up
+// a level).
+//
+// The function panics if called on the root Entry.
+func (b *Builder) Parent() *Builder {
+	if b.current == b.root {
+		panic("root has no parent")
+	}
+	b.current = b.current.Parent
+	return b
+}
+
+// AddString adds a new file Entry whose contents are the given string.
+func (b *Builder) AddString(name, contents string, flags Flag) *Builder {
+	return b.Add(name, strings.NewReader(contents), int64(len(contents)), flags)
+}
+
+// Add adds a new file Entry.
+func (b *Builder) Add(name string, ra io.ReaderAt, size int64, flags Flag) *Builder {
+	b.init()
+
+	child := &Entry{
+		Name:   name,
+		Size:   size,
+		Flags:  flags,
+		Parent: b.current,
+
+		r: ra,
+	}
+	b.current.Children = append(b.current.Children, child)
+
+	return b
+}
+
+// AddDir adds a new directory Entry. The active Entry is switched to this newly
+// added Entry.
+func (b *Builder) AddDir(name string, flags Flag) *Builder {
+	b.init()
+
+	child := &Entry{
+		Name:   name,
+		Flags:  flags | FlagDir,
+		Parent: b.current,
+	}
+
+	b.current.Children = append(b.current.Children, child)
+	b.current = child
+
+	return b
+}
diff --git a/vendor/layeh.com/asar/decoder.go b/vendor/layeh.com/asar/decoder.go
new file mode 100644
index 0000000..bd037de
--- /dev/null
+++ b/vendor/layeh.com/asar/decoder.go
@@ -0,0 +1,64 @@
+package asar // import "layeh.com/asar"
+
+import (
+	"encoding/binary"
+	"errors"
+	"io"
+)
+
+var (
+	errMalformed = errors.New("asar: malformed archive")
+)
+
+// Decode decodes the ASAR archive in ra.
+//
+// Returns the root element and nil on success. nil and an error is returned on
+// failure.
+func Decode(ra io.ReaderAt) (*Entry, error) {
+	headerSize := uint32(0)
+	headerStringSize := uint32(0)
+
+	// [pickle object header (4 bytes) == 4]
+	// [pickle uint32 = $header_object_size]
+	{
+		var buff [8]byte
+		if n, _ := ra.ReadAt(buff[:], 0); n != 8 {
+			return nil, errMalformed
+		}
+
+		dataSize := binary.LittleEndian.Uint32(buff[:4])
+		if dataSize != 4 {
+			return nil, errMalformed
+		}
+		headerSize = binary.LittleEndian.Uint32(buff[4:8])
+	}
+
+	// [pickle object header (4 bytes)]
+	// [pickle data header (4 bytes) == $string_size]
+	// [pickle string ($string_size bytes)]
+	{
+		var buff [8]byte
+		if n, _ := ra.ReadAt(buff[:], 8); n != 8 {
+			return nil, errMalformed
+		}
+
+		headerObjectSize := binary.LittleEndian.Uint32(buff[:4])
+		if headerObjectSize != headerSize-4 {
+			return nil, errMalformed
+		}
+
+		headerStringSize = binary.LittleEndian.Uint32(buff[4:8])
+	}
+
+	// read header string
+	headerSection := io.NewSectionReader(ra, 8+8, int64(headerStringSize))
+	baseOffset := 8 + 8 + int64(headerStringSize)
+	baseOffset += baseOffset % 4 // pickle objects are uint32 aligned
+
+	root, err := decodeHeader(ra, headerSection, baseOffset)
+	if err != nil {
+		return nil, err
+	}
+
+	return root, nil
+}
diff --git a/vendor/layeh.com/asar/doc.go b/vendor/layeh.com/asar/doc.go
new file mode 100644
index 0000000..199c7a6
--- /dev/null
+++ b/vendor/layeh.com/asar/doc.go
@@ -0,0 +1,2 @@
+// Package asar reads and writes ASAR (Atom-Shell Archive) archives.
+package asar // import "layeh.com/asar"
diff --git a/vendor/layeh.com/asar/encoder.go b/vendor/layeh.com/asar/encoder.go
new file mode 100644
index 0000000..70024a9
--- /dev/null
+++ b/vendor/layeh.com/asar/encoder.go
@@ -0,0 +1,122 @@
+package asar // import "layeh.com/asar"
+
+import (
+	"bytes"
+	"encoding/binary"
+	"encoding/json"
+	"io"
+	"strconv"
+)
+
+type entryEncoder struct {
+	Contents      []io.Reader
+	CurrentOffset int64
+	Header        bytes.Buffer
+	Encoder       *json.Encoder
+}
+
+func (enc *entryEncoder) Write(v interface{}) {
+	enc.Encoder.Encode(v)
+	enc.Header.Truncate(enc.Header.Len() - 1) // cut off trailing new line
+}
+
+func (enc *entryEncoder) WriteField(key string, v interface{}) {
+	enc.Write(key)
+	enc.Header.WriteByte(':')
+	enc.Write(v)
+}
+
+func (enc *entryEncoder) Encode(e *Entry) error {
+	enc.Header.WriteByte('{')
+	if e.Flags&FlagDir != 0 {
+		enc.Write("files")
+		enc.Header.WriteString(":{")
+		for i, child := range e.Children {
+			if i > 0 {
+				enc.Header.WriteByte(',')
+			}
+			if !validFilename(child.Name) {
+				panic(errHeader)
+			}
+			enc.Write(child.Name)
+			enc.Header.WriteByte(':')
+			if err := enc.Encode(child); err != nil {
+				return err
+			}
+		}
+		enc.Header.WriteByte('}')
+	} else {
+		enc.Write("size")
+		enc.Header.WriteByte(':')
+		enc.Write(e.Size)
+
+		if e.Flags&FlagExecutable != 0 {
+			enc.Header.WriteByte(',')
+			enc.WriteField("executable", true)
+		}
+
+		enc.Header.WriteByte(',')
+		if e.Flags&FlagUnpacked == 0 {
+			enc.WriteField("offset", strconv.FormatInt(enc.CurrentOffset, 10))
+			enc.CurrentOffset += e.Size
+			enc.Contents = append(enc.Contents, io.NewSectionReader(e.r, e.baseOffset, e.Size))
+		} else {
+			enc.WriteField("unpacked", true)
+		}
+	}
+	enc.Header.WriteByte('}')
+	return nil
+}
+
+// EncodeTo writes an ASAR archive containing Entry's descendants. This function
+// is usally called on the root entry.
+func (e *Entry) EncodeTo(w io.Writer) (n int64, err error) {
+
+	defer func() {
+		if r := recover(); r != nil {
+			if e := r.(error); e != nil {
+				err = e
+			} else {
+				panic(r)
+			}
+		}
+
+	}()
+
+	encoder := entryEncoder{}
+	{
+		var reserve [16]byte
+		encoder.Header.Write(reserve[:])
+	}
+	encoder.Encoder = json.NewEncoder(&encoder.Header)
+	if err = encoder.Encode(e); err != nil {
+		return
+	}
+
+	{
+		var padding [3]byte
+		encoder.Header.Write(padding[:encoder.Header.Len()%4])
+	}
+
+	header := encoder.Header.Bytes()
+	binary.LittleEndian.PutUint32(header[:4], 4)
+	binary.LittleEndian.PutUint32(header[4:8], 8+uint32(encoder.Header.Len()))
+	binary.LittleEndian.PutUint32(header[8:12], 4+uint32(encoder.Header.Len()))
+	binary.LittleEndian.PutUint32(header[12:16], uint32(encoder.Header.Len()))
+
+	n, err = encoder.Header.WriteTo(w)
+	if err != nil {
+		return
+	}
+
+	for _, chunk := range encoder.Contents {
+		var written int64
+		written, err = io.Copy(w, chunk)
+		n += written
+		if err != nil {
+			return
+		}
+	}
+
+	return
+}
diff --git a/vendor/layeh.com/asar/entry.go b/vendor/layeh.com/asar/entry.go
new file mode 100644
index 0000000..05f32ed
--- /dev/null
+++ b/vendor/layeh.com/asar/entry.go
@@ -0,0 +1,227 @@
+package asar // import "layeh.com/asar"
+
+import (
+	"errors"
+	"io"
+	"io/ioutil"
+	"os"
+	"path/filepath"
+	"strings"
+	"time"
+)
+
+// Flag is a bit field of Entry flags.
+type Flag uint32
+
+const (
+	// FlagNone denotes an entry with no flags.
+	FlagNone Flag = 0
+	// FlagDir denotes a directory entry.
+	FlagDir Flag = 1 << iota
+	// FlagExecutable denotes a file with the executable bit set.
+	FlagExecutable
+	// FlagUnpacked denotes that the entry's contents are not included in
+	// the archive.
+	FlagUnpacked
+)
+
+// Entry is a file or a folder in an ASAR archive.
+type Entry struct {
+	Name     string
+	Size     int64
+	Offset   int64
+	Flags    Flag
+	Parent   *Entry
+	Children []*Entry
+
+	r          io.ReaderAt
+	baseOffset int64
+}
+
+// New creates a new Entry.
+func New(name string, ra io.ReaderAt, size, offset int64, flags Flag) *Entry {
+	return &Entry{
+		Name:   name,
+		Size:   size,
+		Offset: offset,
+		Flags:  flags,
+
+		r: ra,
+	}
+}
+
+// FileInfo returns the os.FileInfo information about the entry.
+func (e *Entry) FileInfo() os.FileInfo {
+	return fileInfo{e}
+}
+
+type fileInfo struct {
+	e *Entry
+}
+
+func (f fileInfo) Name() string {
+	return f.e.Name
+}
+
+func (f fileInfo) Size() int64 {
+	return f.e.Size
+}
+
+func (f fileInfo) Mode() os.FileMode {
+	if f.e.Flags&FlagDir != 0 {
+		return 0555 | os.ModeDir
+	}
+
+	if f.e.Flags&FlagExecutable != 0 {
+		return 0555
+	}
+
+	return 0444
+}
+
+func (f fileInfo) ModTime() time.Time {
+	return time.Time{}
+}
+
+func (f fileInfo) IsDir() bool {
+	return f.e.Flags&FlagDir != 0
+}
+
+func (f fileInfo) Sys() interface{} {
+	return f.e
+}
+
+// Path returns the file path to the entry.
+//
+// For example, given the following tree structure:
+//  root
+//   - sub1
+//   - sub2
+//     - file2.jpg
+//
+// file2.jpg's path would be:
+//  sub2/file2.jpg
+func (e *Entry) Path() string {
+	if e.Parent == nil {
+		return ""
+	}
+
+	var p []string
+
+	for e != nil && e.Parent != nil {
+		p = append(p, e.Name)
+		e = e.Parent
+	}
+
+	l := len(p) / 2
+	for i := 0; i < l; i++ {
+		j := len(p) - i - 1
+		p[i], p[j] = p[j], p[i]
+	}
+
+	return strings.Join(p, "/")
+}
+
+// Open returns an *io.SectionReader of the entry's contents. nil is returned if
+// the entry cannot be opened (e.g. because it is a directory).
+func (e *Entry) Open() *io.SectionReader {
+	if e.Flags&FlagDir != 0 || e.Flags&FlagUnpacked != 0 {
+		return nil
+	}
+	return io.NewSectionReader(e.r, e.baseOffset+e.Offset, e.Size)
+}
+
+// WriteTo writes the entry's contents to the given writer. If the entry cannot
+// be opened (e.g. if the entry is a directory).
+func (e *Entry) WriteTo(w io.Writer) (n int64, err error) {
+	r := e.Open()
+	if r == nil {
+		return 0, errors.New("asar: entry cannot be opened")
+	}
+	return io.Copy(w, r)
+}
+
+// Bytes returns the entry's contents as a byte slice. nil is returned if the
+// entry cannot be read.
+func (e *Entry) Bytes() []byte {
+	body := e.Open()
+	if body == nil {
+		return nil
+	}
+	b, err := ioutil.ReadAll(body)
+	if err != nil {
+		return nil
+	}
+	return b
+}
+
+// Bytes returns the entry's contents as a string. nil is returned if the entry
+// cannot be read.
+func (e *Entry) String() string {
+	body := e.Bytes()
+	if body == nil {
+		return ""
+	}
+	return string(body)
+}
+
+// Find searches for a sub-entry of the current entry. nil is returned if the
+// requested sub-entry cannot be found.
+//
+// For example, given the following tree structure:
+//  root
+//   - sub1
+//   - sub2
+//     - sub2.1
+//       - file2.jpg
+//
+// The following expression would return the .jpg *Entry:
+//  root.Find("sub2", "sub2.1", "file2.jpg")
+func (e *Entry) Find(path ...string) *Entry {
+pathLoop:
+	for _, name := range path {
+		for _, child := range e.Children {
+			if child.Name == name {
+				e = child
+				continue pathLoop
+			}
+		}
+		return nil
+	}
+	return e
+}
+
+// Walk recursively walks over the entry's children. See filepath.Walk and
+// filepath.WalkFunc for more information.
+func (e *Entry) Walk(walkFn filepath.WalkFunc) error {
+	return walk(e, "", walkFn)
+}
+
+func walk(e *Entry, parentPath string, walkFn filepath.WalkFunc) error {
+	for i := 0; i < len(e.Children); i++ {
+		child := e.Children[i]
+		childPath := parentPath + child.Name
+
+		err := walkFn(childPath, child.FileInfo(), nil)
+		if err == filepath.SkipDir {
+			continue
+		}
+		if err != nil {
+			return err
+		}
+		if child.Flags&FlagDir == 0 {
+			continue
+		}
+		if err := walk(child, childPath+"/", walkFn); err != nil {
+			return err
+		}
+	}
+	return nil
+}
+
+func validFilename(filename string) bool {
+	if filename == "." || filename == ".." {
+		return false
+	}
+	return strings.IndexAny(filename, "\x00\\/") == -1
+}
diff --git a/vendor/layeh.com/asar/header.go b/vendor/layeh.com/asar/header.go
new file mode 100644
index 0000000..905656e
--- /dev/null
+++ b/vendor/layeh.com/asar/header.go
@@ -0,0 +1,212 @@
+package asar // import "layeh.com/asar"
+
+import (
+	"encoding/json"
+	"errors"
+	"io"
+)
+
+var (
+	errHeader = errors.New("asar: invalid file header")
+)
+
+type jsonReader struct {
+	ASAR       io.ReaderAt
+	BaseOffset int64
+	D          *json.Decoder
+	Token      json.Token
+}
+
+func (j *jsonReader) Peek() json.Token {
+	if j.Token != nil {
+		return j.Token
+	}
+	tkn, err := j.D.Token()
+	if err != nil {
+		if err == io.EOF {
+			return nil
+		}
+		panic(err)
+	}
+	j.Token = tkn
+	return tkn
+}
+
+func (j *jsonReader) HasDelimRune(r rune) bool {
+	peek := j.Peek()
+	ru, ok := peek.(json.Delim)
+	if !ok {
+		return false
+	}
+	if rune(ru) != r {
+		return false
+	}
+	return true
+}
+
+func (j *jsonReader) Next() json.Token {
+	if j.Token != nil {
+		t := j.Token
+		j.Token = nil
+		return t
+	}
+
+	tkn, err := j.D.Token()
+	if err != nil {
+		if err == io.EOF {
+			return nil
+		}
+		panic(err)
+	}
+	return tkn
+}
+
+func (j *jsonReader) NextDelimRune() rune {
+	tkn := j.Next()
+	r, ok := tkn.(json.Delim)
+	if !ok {
+		panic(errHeader)
+	}
+	return rune(r)
+}
+
+func (j *jsonReader) ExpectDelim(r rune) {
+	next := j.NextDelimRune()
+	if next != r {
+		panic(errHeader)
+	}
+}
+
+func (j *jsonReader) ExpectBool() bool {
+	tkn := j.Next()
+	b, ok := tkn.(bool)
+	if !ok {
+		panic(errHeader)
+	}
+	return b
+}
+
+func (j *jsonReader) ExpectString() string {
+	next := j.Next()
+	str, ok := next.(string)
+	if !ok {
+		panic(errHeader)
+	}
+	return str
+}
+
+func (j *jsonReader) ExpectStringVal(val string) {
+	str := j.ExpectString()
+	if str != val {
+		panic(errHeader)
+	}
+}
+
+func (j *jsonReader) ExpectInt64() int64 {
+	var number json.Number
+	switch j.Peek().(type) {
+	case string:
+		number = json.Number(j.ExpectString())
+	case json.Number:
+		number = j.Next().(json.Number)
+	default:
+		panic(errHeader)
+	}
+	val, err := number.Int64()
+	if err != nil {
+		panic(errHeader)
+	}
+	return val
+}
+
+func parseRoot(r *jsonReader) *Entry {
+	entry := &Entry{
+		Flags: FlagDir,
+	}
+
+	r.ExpectDelim('{')
+	r.ExpectStringVal("files")
+	parseFiles(r, entry)
+	r.ExpectDelim('}')
+	if r.Next() != nil {
+		panic(errHeader)
+	}
+	return entry
+}
+
+func parseFiles(r *jsonReader, parent *Entry) {
+	r.ExpectDelim('{')
+	for !r.HasDelimRune('}') {
+		parseEntry(r, parent)
+	}
+	r.ExpectDelim('}')
+}
+
+func parseEntry(r *jsonReader, parent *Entry) {
+	name := r.ExpectString()
+	if name == "" {
+		panic(errHeader)
+	}
+	if !validFilename(name) {
+		panic(errHeader)
+	}
+
+	r.ExpectDelim('{')
+
+	child := &Entry{
+		Name:   name,
+		Parent: parent,
+	}
+
+	for !r.HasDelimRune('}') {
+		switch r.ExpectString() {
+		case "files":
+			child.Flags |= FlagDir
+			parseFiles(r, child)
+		case "size":
+			child.Size = r.ExpectInt64()
+		case "offset":
+			child.Offset = r.ExpectInt64()
+		case "unpacked":
+			if r.ExpectBool() {
+				child.Flags |= FlagUnpacked
+			}
+		case "executable":
+			if r.ExpectBool() {
+				child.Flags |= FlagExecutable
+			}
+		default:
+			panic(errHeader)
+		}
+	}
+
+	if child.Flags&FlagDir == 0 {
+		child.r = r.ASAR
+		child.baseOffset = r.BaseOffset
+	}
+
+	parent.Children = append(parent.Children, child)
+	r.ExpectDelim('}')
+}
+
+func decodeHeader(asar io.ReaderAt, header *io.SectionReader, offset int64) (entry *Entry, err error) {
+	decoder := json.NewDecoder(header)
+	decoder.UseNumber()
+	reader := jsonReader{
+		ASAR:       asar,
+		BaseOffset: offset,
+		D:          decoder,
+	}
+	defer func() {
+		if r := recover(); r != nil {
+			if e := r.(error); e != nil {
+				err = e
+			} else {
+				panic(r)
+			}
+		}
+
+	}()
+	entry = parseRoot(&reader)
+	return
+}