1 files changed, 0 insertions, 276 deletions
diff --git a/libgo/go/encoding/git85/git.go b/libgo/go/encoding/git85/git.go
deleted file mode 100644
index d383213..0000000
--- a/libgo/go/encoding/git85/git.go
+++ /dev/null
@@ -1,276 +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 git85 implements the radix 85 data encoding
-// used in the Git version control system.
-package git85
-
-import (
-	"bytes"
-	"io"
-	"strconv"
-)
-
-type CorruptInputError int64
-
-func (e CorruptInputError) Error() string {
-	return "illegal git85 data at input byte " + strconv.FormatInt(int64(e), 10)
-}
-
-const encode = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz!#$%&()*+-;<=>?@^_`{|}~"
-
-// The decodings are 1+ the actual value, so that the
-// default zero value can be used to mean "not valid".
-var decode = [256]uint8{
-	'0': 1, 2, 3, 4, 5, 6, 7, 8, 9, 10,
-	'A': 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23,
-	24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36,
-	'a': 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49,
-	50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62,
-	'!': 63,
-	'#': 64, 65, 66, 67,
-	'(': 68, 69, 70, 71,
-	'-': 72,
-	';': 73,
-	'<': 74, 75, 76, 77,
-	'@': 78,
-	'^': 79, 80, 81,
-	'{': 82, 83, 84, 85,
-}
-
-// Encode encodes src into EncodedLen(len(src))
-// bytes of dst.  As a convenience, it returns the number
-// of bytes written to dst, but this value is always EncodedLen(len(src)).
-// Encode implements the radix 85 encoding used in the
-// Git version control tool.
-//
-// The encoding splits src into chunks of at most 52 bytes
-// and encodes each chunk on its own line.
-func Encode(dst, src []byte) int {
-	ndst := 0
-	for len(src) > 0 {
-		n := len(src)
-		if n > 52 {
-			n = 52
-		}
-		if n <= 27 {
-			dst[ndst] = byte('A' + n - 1)
-		} else {
-			dst[ndst] = byte('a' + n - 26 - 1)
-		}
-		ndst++
-		for i := 0; i < n; i += 4 {
-			var v uint32
-			for j := 0; j < 4 && i+j < n; j++ {
-				v |= uint32(src[i+j]) << uint(24-j*8)
-			}
-			for j := 4; j >= 0; j-- {
-				dst[ndst+j] = encode[v%85]
-				v /= 85
-			}
-			ndst += 5
-		}
-		dst[ndst] = '\n'
-		ndst++
-		src = src[n:]
-	}
-	return ndst
-}
-
-// EncodedLen returns the length of an encoding of n source bytes.
-func EncodedLen(n int) int {
-	if n == 0 {
-		return 0
-	}
-	// 5 bytes per 4 bytes of input, rounded up.
-	// 2 extra bytes for each line of 52 src bytes, rounded up.
-	return (n+3)/4*5 + (n+51)/52*2
-}
-
-var newline = []byte{'\n'}
-
-// Decode decodes src into at most MaxDecodedLen(len(src))
-// bytes, returning the actual number of bytes written to dst.
-//
-// If Decode encounters invalid input, it returns a CorruptInputError.
-//
-func Decode(dst, src []byte) (n int, err error) {
-	ndst := 0
-	nsrc := 0
-	for nsrc < len(src) {
-		var l int
-		switch ch := int(src[nsrc]); {
-		case 'A' <= ch && ch <= 'Z':
-			l = ch - 'A' + 1
-		case 'a' <= ch && ch <= 'z':
-			l = ch - 'a' + 26 + 1
-		default:
-			return ndst, CorruptInputError(nsrc)
-		}
-		if nsrc+1+l > len(src) {
-			return ndst, CorruptInputError(nsrc)
-		}
-		el := (l + 3) / 4 * 5 // encoded len
-		if nsrc+1+el+1 > len(src) || src[nsrc+1+el] != '\n' {
-			return ndst, CorruptInputError(nsrc)
-		}
-		line := src[nsrc+1 : nsrc+1+el]
-		for i := 0; i < el; i += 5 {
-			var v uint32
-			for j := 0; j < 5; j++ {
-				ch := decode[line[i+j]]
-				if ch == 0 {
-					return ndst, CorruptInputError(nsrc + 1 + i + j)
-				}
-				v = v*85 + uint32(ch-1)
-			}
-			for j := 0; j < 4; j++ {
-				dst[ndst] = byte(v >> 24)
-				v <<= 8
-				ndst++
-			}
-		}
-		// Last fragment may have run too far (but there was room in dst).
-		// Back up.
-		if l%4 != 0 {
-			ndst -= 4 - l%4
-		}
-		nsrc += 1 + el + 1
-	}
-	return ndst, nil
-}
-
-func MaxDecodedLen(n int) int { return n / 5 * 4 }
-
-// NewEncoder returns a new Git base85 stream encoder.  Data written to
-// the returned writer will be encoded and then written to w.
-// The Git encoding operates on 52-byte blocks; when finished
-// writing, the caller must Close the returned encoder to flush any
-// partially written blocks.
-func NewEncoder(w io.Writer) io.WriteCloser { return &encoder{w: w} }
-
-type encoder struct {
-	w    io.Writer
-	err  error
-	buf  [52]byte
-	nbuf int
-	out  [1024]byte
-	nout int
-}
-
-func (e *encoder) Write(p []byte) (n int, err 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 < 52; i++ {
-			e.buf[e.nbuf] = p[i]
-			e.nbuf++
-		}
-		n += i
-		p = p[i:]
-		if e.nbuf < 52 {
-			return
-		}
-		nout := Encode(e.out[0:], e.buf[0:])
-		if _, e.err = e.w.Write(e.out[0:nout]); e.err != nil {
-			return n, e.err
-		}
-		e.nbuf = 0
-	}
-
-	// Large interior chunks.
-	for len(p) >= 52 {
-		nn := len(e.out) / (1 + 52/4*5 + 1) * 52
-		if nn > len(p) {
-			nn = len(p) / 52 * 52
-		}
-		if nn > 0 {
-			nout := Encode(e.out[0:], p[0:nn])
-			if _, e.err = e.w.Write(e.out[0:nout]); 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
-}
-
-func (e *encoder) Close() error {
-	// If there's anything left in the buffer, flush it out
-	if e.err == nil && e.nbuf > 0 {
-		nout := Encode(e.out[0:], e.buf[0:e.nbuf])
-		e.nbuf = 0
-		_, e.err = e.w.Write(e.out[0:nout])
-	}
-	return e.err
-}
-
-// NewDecoder returns a new Git base85 stream decoder.
-func NewDecoder(r io.Reader) io.Reader { return &decoder{r: r} }
-
-type decoder struct {
-	r       io.Reader
-	err     error
-	readErr error
-	buf     [1024]byte
-	nbuf    int
-	out     []byte
-	outbuf  [1024]byte
-	off     int64
-}
-
-func (d *decoder) Read(p []byte) (n int, err error) {
-	if len(p) == 0 {
-		return 0, nil
-	}
-
-	for {
-		// Copy leftover output from last decode.
-		if len(d.out) > 0 {
-			n = copy(p, d.out)
-			d.out = d.out[n:]
-			return
-		}
-
-		// Out of decoded output.  Check errors.
-		if d.err != nil {
-			return 0, d.err
-		}
-		if d.readErr != nil {
-			d.err = d.readErr
-			return 0, d.err
-		}
-
-		// Read and decode more input.
-		var nn int
-		nn, d.readErr = d.r.Read(d.buf[d.nbuf:])
-		d.nbuf += nn
-
-		// Send complete lines to Decode.
-		nl := bytes.LastIndex(d.buf[0:d.nbuf], newline)
-		if nl < 0 {
-			continue
-		}
-		nn, d.err = Decode(d.outbuf[0:], d.buf[0:nl+1])
-		if e, ok := d.err.(CorruptInputError); ok {
-			d.err = CorruptInputError(int64(e) + d.off)
-		}
-		d.out = d.outbuf[0:nn]
-		d.nbuf = copy(d.buf[0:], d.buf[nl+1:d.nbuf])
-		d.off += int64(nl + 1)
-	}
-	panic("unreachable")
-}