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-rw-r--r--src/pkg/encoding/base64/Makefile11
-rw-r--r--src/pkg/encoding/base64/base64.go343
-rw-r--r--src/pkg/encoding/base64/base64_test.go199
3 files changed, 0 insertions, 553 deletions
diff --git a/src/pkg/encoding/base64/Makefile b/src/pkg/encoding/base64/Makefile
deleted file mode 100644
index 2f54ed839..000000000
--- a/src/pkg/encoding/base64/Makefile
+++ /dev/null
@@ -1,11 +0,0 @@
-# Copyright 2009 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.
-
-include ../../../Make.inc
-
-TARG=encoding/base64
-GOFILES=\
- base64.go\
-
-include ../../../Make.pkg
diff --git a/src/pkg/encoding/base64/base64.go b/src/pkg/encoding/base64/base64.go
deleted file mode 100644
index c6b2a13e4..000000000
--- a/src/pkg/encoding/base64/base64.go
+++ /dev/null
@@ -1,343 +0,0 @@
-// Copyright 2009 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 base64 implements base64 encoding as specified by RFC 4648.
-package base64
-
-import (
- "io"
- "os"
- "strconv"
-)
-
-/*
- * Encodings
- */
-
-// An Encoding is a radix 64 encoding/decoding scheme, defined by a
-// 64-character alphabet. The most common encoding is the "base64"
-// encoding defined in RFC 4648 and used in MIME (RFC 2045) and PEM
-// (RFC 1421). RFC 4648 also defines an alternate encoding, which is
-// the standard encoding with - and _ substituted for + and /.
-type Encoding struct {
- encode string
- decodeMap [256]byte
-}
-
-const encodeStd = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/"
-const encodeURL = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789-_"
-
-// NewEncoding returns a new Encoding defined by the given alphabet,
-// which must be a 64-byte string.
-func NewEncoding(encoder string) *Encoding {
- e := new(Encoding)
- e.encode = encoder
- for i := 0; i < len(e.decodeMap); i++ {
- e.decodeMap[i] = 0xFF
- }
- for i := 0; i < len(encoder); i++ {
- e.decodeMap[encoder[i]] = byte(i)
- }
- return e
-}
-
-// StdEncoding is the standard base64 encoding, as defined in
-// RFC 4648.
-var StdEncoding = NewEncoding(encodeStd)
-
-// URLEncoding is the alternate base64 encoding defined in RFC 4648.
-// It is typically used in URLs and file names.
-var URLEncoding = NewEncoding(encodeURL)
-
-/*
- * Encoder
- */
-
-// Encode encodes src using the encoding enc, writing
-// EncodedLen(len(src)) bytes to dst.
-//
-// The encoding pads the output to a multiple of 4 bytes,
-// so Encode is not appropriate for use on individual blocks
-// of a large data stream. Use NewEncoder() instead.
-func (enc *Encoding) Encode(dst, src []byte) {
- if len(src) == 0 {
- return
- }
-
- for len(src) > 0 {
- dst[0] = 0
- dst[1] = 0
- dst[2] = 0
- dst[3] = 0
-
- // Unpack 4x 6-bit source blocks into a 4 byte
- // destination quantum
- switch len(src) {
- default:
- dst[3] |= src[2] & 0x3F
- dst[2] |= src[2] >> 6
- fallthrough
- case 2:
- dst[2] |= (src[1] << 2) & 0x3F
- dst[1] |= src[1] >> 4
- fallthrough
- case 1:
- dst[1] |= (src[0] << 4) & 0x3F
- dst[0] |= src[0] >> 2
- }
-
- // Encode 6-bit blocks using the base64 alphabet
- for j := 0; j < 4; j++ {
- dst[j] = enc.encode[dst[j]]
- }
-
- // Pad the final quantum
- if len(src) < 3 {
- dst[3] = '='
- if len(src) < 2 {
- dst[2] = '='
- }
- break
- }
-
- src = src[3:]
- dst = dst[4:]
- }
-}
-
-// EncodeToString returns the base64 encoding of src.
-func (enc *Encoding) EncodeToString(src []byte) string {
- buf := make([]byte, enc.EncodedLen(len(src)))
- enc.Encode(buf, src)
- return string(buf)
-}
-
-type encoder struct {
- err os.Error
- enc *Encoding
- w io.Writer
- buf [3]byte // buffered data waiting to be encoded
- nbuf int // number of bytes in buf
- out [1024]byte // output buffer
-}
-
-func (e *encoder) Write(p []byte) (n int, err os.Error) {
- if e.err != nil {
- return 0, e.err
- }
-
- // Leading fringe.
- if e.nbuf > 0 {
- var i int
- for i = 0; i < len(p) && e.nbuf < 3; i++ {
- e.buf[e.nbuf] = p[i]
- e.nbuf++
- }
- n += i
- p = p[i:]
- if e.nbuf < 3 {
- return
- }
- e.enc.Encode(e.out[0:], e.buf[0:])
- if _, e.err = e.w.Write(e.out[0:4]); e.err != nil {
- return n, e.err
- }
- e.nbuf = 0
- }
-
- // Large interior chunks.
- for len(p) >= 3 {
- nn := len(e.out) / 4 * 3
- if nn > len(p) {
- nn = len(p)
- }
- nn -= nn % 3
- if nn > 0 {
- e.enc.Encode(e.out[0:], p[0:nn])
- if _, e.err = e.w.Write(e.out[0 : nn/3*4]); e.err != nil {
- return n, e.err
- }
- }
- n += nn
- p = p[nn:]
- }
-
- // Trailing fringe.
- for i := 0; i < len(p); i++ {
- e.buf[i] = p[i]
- }
- e.nbuf = len(p)
- n += len(p)
- return
-}
-
-// Close flushes any pending output from the encoder.
-// It is an error to call Write after calling Close.
-func (e *encoder) Close() os.Error {
- // If there's anything left in the buffer, flush it out
- if e.err == nil && e.nbuf > 0 {
- e.enc.Encode(e.out[0:], e.buf[0:e.nbuf])
- e.nbuf = 0
- _, e.err = e.w.Write(e.out[0:4])
- }
- return e.err
-}
-
-// NewEncoder returns a new base64 stream encoder. Data written to
-// the returned writer will be encoded using enc and then written to w.
-// Base64 encodings operate in 4-byte blocks; when finished
-// writing, the caller must Close the returned encoder to flush any
-// partially written blocks.
-func NewEncoder(enc *Encoding, w io.Writer) io.WriteCloser {
- return &encoder{enc: enc, w: w}
-}
-
-// EncodedLen returns the length in bytes of the base64 encoding
-// of an input buffer of length n.
-func (enc *Encoding) EncodedLen(n int) int { return (n + 2) / 3 * 4 }
-
-/*
- * Decoder
- */
-
-type CorruptInputError int64
-
-func (e CorruptInputError) String() string {
- return "illegal base64 data at input byte " + strconv.Itoa64(int64(e))
-}
-
-// decode is like Decode but returns an additional 'end' value, which
-// indicates if end-of-message padding was encountered and thus any
-// additional data is an error. decode also assumes len(src)%4==0,
-// since it is meant for internal use.
-func (enc *Encoding) decode(dst, src []byte) (n int, end bool, err os.Error) {
- for i := 0; i < len(src)/4 && !end; i++ {
- // Decode quantum using the base64 alphabet
- var dbuf [4]byte
- dlen := 4
-
- dbufloop:
- for j := 0; j < 4; j++ {
- in := src[i*4+j]
- if in == '=' && j >= 2 && i == len(src)/4-1 {
- // We've reached the end and there's
- // padding
- if src[i*4+3] != '=' {
- return n, false, CorruptInputError(i*4 + 2)
- }
- dlen = j
- end = true
- break dbufloop
- }
- dbuf[j] = enc.decodeMap[in]
- if dbuf[j] == 0xFF {
- return n, false, CorruptInputError(i*4 + j)
- }
- }
-
- // Pack 4x 6-bit source blocks into 3 byte destination
- // quantum
- switch dlen {
- case 4:
- dst[i*3+2] = dbuf[2]<<6 | dbuf[3]
- fallthrough
- case 3:
- dst[i*3+1] = dbuf[1]<<4 | dbuf[2]>>2
- fallthrough
- case 2:
- dst[i*3+0] = dbuf[0]<<2 | dbuf[1]>>4
- }
- n += dlen - 1
- }
-
- return n, end, nil
-}
-
-// Decode decodes src using the encoding enc. It writes at most
-// DecodedLen(len(src)) bytes to dst and returns the number of bytes
-// written. If src contains invalid base64 data, it will return the
-// number of bytes successfully written and CorruptInputError.
-func (enc *Encoding) Decode(dst, src []byte) (n int, err os.Error) {
- if len(src)%4 != 0 {
- return 0, CorruptInputError(len(src) / 4 * 4)
- }
-
- n, _, err = enc.decode(dst, src)
- return
-}
-
-// DecodeString returns the bytes represented by the base64 string s.
-func (enc *Encoding) DecodeString(s string) ([]byte, os.Error) {
- dbuf := make([]byte, enc.DecodedLen(len(s)))
- n, err := enc.Decode(dbuf, []byte(s))
- return dbuf[:n], err
-}
-
-type decoder struct {
- err os.Error
- enc *Encoding
- r io.Reader
- end bool // saw end of message
- buf [1024]byte // leftover input
- nbuf int
- out []byte // leftover decoded output
- outbuf [1024 / 4 * 3]byte
-}
-
-func (d *decoder) Read(p []byte) (n int, err os.Error) {
- if d.err != nil {
- return 0, d.err
- }
-
- // Use leftover decoded output from last read.
- if len(d.out) > 0 {
- n = copy(p, d.out)
- d.out = d.out[n:]
- return n, nil
- }
-
- // Read a chunk.
- nn := len(p) / 3 * 4
- if nn < 4 {
- nn = 4
- }
- if nn > len(d.buf) {
- nn = len(d.buf)
- }
- nn, d.err = io.ReadAtLeast(d.r, d.buf[d.nbuf:nn], 4-d.nbuf)
- d.nbuf += nn
- if d.nbuf < 4 {
- return 0, d.err
- }
-
- // Decode chunk into p, or d.out and then p if p is too small.
- nr := d.nbuf / 4 * 4
- nw := d.nbuf / 4 * 3
- if nw > len(p) {
- nw, d.end, d.err = d.enc.decode(d.outbuf[0:], d.buf[0:nr])
- d.out = d.outbuf[0:nw]
- n = copy(p, d.out)
- d.out = d.out[n:]
- } else {
- n, d.end, d.err = d.enc.decode(p, d.buf[0:nr])
- }
- d.nbuf -= nr
- for i := 0; i < d.nbuf; i++ {
- d.buf[i] = d.buf[i+nr]
- }
-
- if d.err == nil {
- d.err = err
- }
- return n, d.err
-}
-
-// NewDecoder constructs a new base64 stream decoder.
-func NewDecoder(enc *Encoding, r io.Reader) io.Reader {
- return &decoder{enc: enc, r: r}
-}
-
-// DecodedLen returns the maximum length in bytes of the decoded data
-// corresponding to n bytes of base64-encoded data.
-func (enc *Encoding) DecodedLen(n int) int { return n / 4 * 3 }
diff --git a/src/pkg/encoding/base64/base64_test.go b/src/pkg/encoding/base64/base64_test.go
deleted file mode 100644
index c163dae84..000000000
--- a/src/pkg/encoding/base64/base64_test.go
+++ /dev/null
@@ -1,199 +0,0 @@
-// Copyright 2009 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 base64
-
-import (
- "bytes"
- "io/ioutil"
- "os"
- "testing"
-)
-
-type testpair struct {
- decoded, encoded string
-}
-
-var pairs = []testpair{
- // RFC 3548 examples
- {"\x14\xfb\x9c\x03\xd9\x7e", "FPucA9l+"},
- {"\x14\xfb\x9c\x03\xd9", "FPucA9k="},
- {"\x14\xfb\x9c\x03", "FPucAw=="},
-
- // RFC 4648 examples
- {"", ""},
- {"f", "Zg=="},
- {"fo", "Zm8="},
- {"foo", "Zm9v"},
- {"foob", "Zm9vYg=="},
- {"fooba", "Zm9vYmE="},
- {"foobar", "Zm9vYmFy"},
-
- // Wikipedia examples
- {"sure.", "c3VyZS4="},
- {"sure", "c3VyZQ=="},
- {"sur", "c3Vy"},
- {"su", "c3U="},
- {"leasure.", "bGVhc3VyZS4="},
- {"easure.", "ZWFzdXJlLg=="},
- {"asure.", "YXN1cmUu"},
- {"sure.", "c3VyZS4="},
-}
-
-var bigtest = testpair{
- "Twas brillig, and the slithy toves",
- "VHdhcyBicmlsbGlnLCBhbmQgdGhlIHNsaXRoeSB0b3Zlcw==",
-}
-
-func testEqual(t *testing.T, msg string, args ...interface{}) bool {
- if args[len(args)-2] != args[len(args)-1] {
- t.Errorf(msg, args...)
- return false
- }
- return true
-}
-
-func TestEncode(t *testing.T) {
- for _, p := range pairs {
- got := StdEncoding.EncodeToString([]byte(p.decoded))
- testEqual(t, "Encode(%q) = %q, want %q", p.decoded, got, p.encoded)
- }
-}
-
-func TestEncoder(t *testing.T) {
- for _, p := range pairs {
- bb := &bytes.Buffer{}
- encoder := NewEncoder(StdEncoding, bb)
- encoder.Write([]byte(p.decoded))
- encoder.Close()
- testEqual(t, "Encode(%q) = %q, want %q", p.decoded, bb.String(), p.encoded)
- }
-}
-
-func TestEncoderBuffering(t *testing.T) {
- input := []byte(bigtest.decoded)
- for bs := 1; bs <= 12; bs++ {
- bb := &bytes.Buffer{}
- encoder := NewEncoder(StdEncoding, bb)
- for pos := 0; pos < len(input); pos += bs {
- end := pos + bs
- if end > len(input) {
- end = len(input)
- }
- n, err := encoder.Write(input[pos:end])
- testEqual(t, "Write(%q) gave error %v, want %v", input[pos:end], err, os.Error(nil))
- testEqual(t, "Write(%q) gave length %v, want %v", input[pos:end], n, end-pos)
- }
- err := encoder.Close()
- testEqual(t, "Close gave error %v, want %v", err, os.Error(nil))
- testEqual(t, "Encoding/%d of %q = %q, want %q", bs, bigtest.decoded, bb.String(), bigtest.encoded)
- }
-}
-
-func TestDecode(t *testing.T) {
- for _, p := range pairs {
- dbuf := make([]byte, StdEncoding.DecodedLen(len(p.encoded)))
- count, end, err := StdEncoding.decode(dbuf, []byte(p.encoded))
- testEqual(t, "Decode(%q) = error %v, want %v", p.encoded, err, os.Error(nil))
- testEqual(t, "Decode(%q) = length %v, want %v", p.encoded, count, len(p.decoded))
- if len(p.encoded) > 0 {
- testEqual(t, "Decode(%q) = end %v, want %v", p.encoded, end, (p.encoded[len(p.encoded)-1] == '='))
- }
- testEqual(t, "Decode(%q) = %q, want %q", p.encoded, string(dbuf[0:count]), p.decoded)
-
- dbuf, err = StdEncoding.DecodeString(p.encoded)
- testEqual(t, "DecodeString(%q) = error %v, want %v", p.encoded, err, os.Error(nil))
- testEqual(t, "DecodeString(%q) = %q, want %q", string(dbuf), p.decoded)
- }
-}
-
-func TestDecoder(t *testing.T) {
- for _, p := range pairs {
- decoder := NewDecoder(StdEncoding, bytes.NewBufferString(p.encoded))
- dbuf := make([]byte, StdEncoding.DecodedLen(len(p.encoded)))
- count, err := decoder.Read(dbuf)
- if err != nil && err != os.EOF {
- t.Fatal("Read failed", err)
- }
- testEqual(t, "Read from %q = length %v, want %v", p.encoded, count, len(p.decoded))
- testEqual(t, "Decoding of %q = %q, want %q", p.encoded, string(dbuf[0:count]), p.decoded)
- if err != os.EOF {
- count, err = decoder.Read(dbuf)
- }
- testEqual(t, "Read from %q = %v, want %v", p.encoded, err, os.EOF)
- }
-}
-
-func TestDecoderBuffering(t *testing.T) {
- for bs := 1; bs <= 12; bs++ {
- decoder := NewDecoder(StdEncoding, bytes.NewBufferString(bigtest.encoded))
- buf := make([]byte, len(bigtest.decoded)+12)
- var total int
- for total = 0; total < len(bigtest.decoded); {
- n, err := decoder.Read(buf[total : total+bs])
- testEqual(t, "Read from %q at pos %d = %d, %v, want _, %v", bigtest.encoded, total, n, err, os.Error(nil))
- total += n
- }
- testEqual(t, "Decoding/%d of %q = %q, want %q", bs, bigtest.encoded, string(buf[0:total]), bigtest.decoded)
- }
-}
-
-func TestDecodeCorrupt(t *testing.T) {
- type corrupt struct {
- e string
- p int
- }
- examples := []corrupt{
- {"!!!!", 0},
- {"x===", 1},
- {"AA=A", 2},
- {"AAA=AAAA", 3},
- {"AAAAA", 4},
- {"AAAAAA", 4},
- }
-
- for _, e := range examples {
- dbuf := make([]byte, StdEncoding.DecodedLen(len(e.e)))
- _, err := StdEncoding.Decode(dbuf, []byte(e.e))
- switch err := err.(type) {
- case CorruptInputError:
- testEqual(t, "Corruption in %q at offset %v, want %v", e.e, int(err), e.p)
- default:
- t.Error("Decoder failed to detect corruption in", e)
- }
- }
-}
-
-func TestBig(t *testing.T) {
- n := 3*1000 + 1
- raw := make([]byte, n)
- const alpha = "0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ"
- for i := 0; i < n; i++ {
- raw[i] = alpha[i%len(alpha)]
- }
- encoded := new(bytes.Buffer)
- w := NewEncoder(StdEncoding, encoded)
- nn, err := w.Write(raw)
- if nn != n || err != nil {
- t.Fatalf("Encoder.Write(raw) = %d, %v want %d, nil", nn, err, n)
- }
- err = w.Close()
- if err != nil {
- t.Fatalf("Encoder.Close() = %v want nil", err)
- }
- decoded, err := ioutil.ReadAll(NewDecoder(StdEncoding, encoded))
- if err != nil {
- t.Fatalf("ioutil.ReadAll(NewDecoder(...)): %v", err)
- }
-
- if !bytes.Equal(raw, decoded) {
- var i int
- for i = 0; i < len(decoded) && i < len(raw); i++ {
- if decoded[i] != raw[i] {
- break
- }
- }
- t.Errorf("Decode(Encode(%d-byte string)) failed at offset %d", n, i)
- }
-}