Imported Upstream version 1.4upstream/1.4

1 files changed, 0 insertions, 159 deletions

diff --git a/src/pkg/net/http/cookiejar/punycode.go b/src/pkg/net/http/cookiejar/punycode.go
deleted file mode 100644
index ea7ceb5ef..000000000
--- a/src/pkg/net/http/cookiejar/punycode.go
+++ /dev/null
@@ -1,159 +0,0 @@
-// 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 cookiejar
-
-// This file implements the Punycode algorithm from RFC 3492.
-
-import (
-	"fmt"
-	"strings"
-	"unicode/utf8"
-)
-
-// These parameter values are specified in section 5.
-//
-// All computation is done with int32s, so that overflow behavior is identical
-// regardless of whether int is 32-bit or 64-bit.
-const (
-	base        int32 = 36
-	damp        int32 = 700
-	initialBias int32 = 72
-	initialN    int32 = 128
-	skew        int32 = 38
-	tmax        int32 = 26
-	tmin        int32 = 1
-)
-
-// encode encodes a string as specified in section 6.3 and prepends prefix to
-// the result.
-//
-// The "while h < length(input)" line in the specification becomes "for
-// remaining != 0" in the Go code, because len(s) in Go is in bytes, not runes.
-func encode(prefix, s string) (string, error) {
-	output := make([]byte, len(prefix), len(prefix)+1+2*len(s))
-	copy(output, prefix)
-	delta, n, bias := int32(0), initialN, initialBias
-	b, remaining := int32(0), int32(0)
-	for _, r := range s {
-		if r < 0x80 {
-			b++
-			output = append(output, byte(r))
-		} else {
-			remaining++
-		}
-	}
-	h := b
-	if b > 0 {
-		output = append(output, '-')
-	}
-	for remaining != 0 {
-		m := int32(0x7fffffff)
-		for _, r := range s {
-			if m > r && r >= n {
-				m = r
-			}
-		}
-		delta += (m - n) * (h + 1)
-		if delta < 0 {
-			return "", fmt.Errorf("cookiejar: invalid label %q", s)
-		}
-		n = m
-		for _, r := range s {
-			if r < n {
-				delta++
-				if delta < 0 {
-					return "", fmt.Errorf("cookiejar: invalid label %q", s)
-				}
-				continue
-			}
-			if r > n {
-				continue
-			}
-			q := delta
-			for k := base; ; k += base {
-				t := k - bias
-				if t < tmin {
-					t = tmin
-				} else if t > tmax {
-					t = tmax
-				}
-				if q < t {
-					break
-				}
-				output = append(output, encodeDigit(t+(q-t)%(base-t)))
-				q = (q - t) / (base - t)
-			}
-			output = append(output, encodeDigit(q))
-			bias = adapt(delta, h+1, h == b)
-			delta = 0
-			h++
-			remaining--
-		}
-		delta++
-		n++
-	}
-	return string(output), nil
-}
-
-func encodeDigit(digit int32) byte {
-	switch {
-	case 0 <= digit && digit < 26:
-		return byte(digit + 'a')
-	case 26 <= digit && digit < 36:
-		return byte(digit + ('0' - 26))
-	}
-	panic("cookiejar: internal error in punycode encoding")
-}
-
-// adapt is the bias adaptation function specified in section 6.1.
-func adapt(delta, numPoints int32, firstTime bool) int32 {
-	if firstTime {
-		delta /= damp
-	} else {
-		delta /= 2
-	}
-	delta += delta / numPoints
-	k := int32(0)
-	for delta > ((base-tmin)*tmax)/2 {
-		delta /= base - tmin
-		k += base
-	}
-	return k + (base-tmin+1)*delta/(delta+skew)
-}
-
-// Strictly speaking, the remaining code below deals with IDNA (RFC 5890 and
-// friends) and not Punycode (RFC 3492) per se.
-
-// acePrefix is the ASCII Compatible Encoding prefix.
-const acePrefix = "xn--"
-
-// toASCII converts a domain or domain label to its ASCII form. For example,
-// toASCII("bücher.example.com") is "xn--bcher-kva.example.com", and
-// toASCII("golang") is "golang".
-func toASCII(s string) (string, error) {
-	if ascii(s) {
-		return s, nil
-	}
-	labels := strings.Split(s, ".")
-	for i, label := range labels {
-		if !ascii(label) {
-			a, err := encode(acePrefix, label)
-			if err != nil {
-				return "", err
-			}
-			labels[i] = a
-		}
-	}
-	return strings.Join(labels, "."), nil
-}
-
-func ascii(s string) bool {
-	for i := 0; i < len(s); i++ {
-		if s[i] >= utf8.RuneSelf {
-			return false
-		}
-	}
-	return true
-}