forked from github/multus-cni
ac21a96804
gomodule is still in progress to migrate for now, hence multus team decide to keep vendor directory to support build without gomodule.
73 lines
1.8 KiB
Go
73 lines
1.8 KiB
Go
// Code generated by running "go generate" in golang.org/x/text. DO NOT EDIT.
|
|
|
|
// Copyright 2016 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 idna
|
|
|
|
// appendMapping appends the mapping for the respective rune. isMapped must be
|
|
// true. A mapping is a categorization of a rune as defined in UTS #46.
|
|
func (c info) appendMapping(b []byte, s string) []byte {
|
|
index := int(c >> indexShift)
|
|
if c&xorBit == 0 {
|
|
s := mappings[index:]
|
|
return append(b, s[1:s[0]+1]...)
|
|
}
|
|
b = append(b, s...)
|
|
if c&inlineXOR == inlineXOR {
|
|
// TODO: support and handle two-byte inline masks
|
|
b[len(b)-1] ^= byte(index)
|
|
} else {
|
|
for p := len(b) - int(xorData[index]); p < len(b); p++ {
|
|
index++
|
|
b[p] ^= xorData[index]
|
|
}
|
|
}
|
|
return b
|
|
}
|
|
|
|
// Sparse block handling code.
|
|
|
|
type valueRange struct {
|
|
value uint16 // header: value:stride
|
|
lo, hi byte // header: lo:n
|
|
}
|
|
|
|
type sparseBlocks struct {
|
|
values []valueRange
|
|
offset []uint16
|
|
}
|
|
|
|
var idnaSparse = sparseBlocks{
|
|
values: idnaSparseValues[:],
|
|
offset: idnaSparseOffset[:],
|
|
}
|
|
|
|
// Don't use newIdnaTrie to avoid unconditional linking in of the table.
|
|
var trie = &idnaTrie{}
|
|
|
|
// lookup determines the type of block n and looks up the value for b.
|
|
// For n < t.cutoff, the block is a simple lookup table. Otherwise, the block
|
|
// is a list of ranges with an accompanying value. Given a matching range r,
|
|
// the value for b is by r.value + (b - r.lo) * stride.
|
|
func (t *sparseBlocks) lookup(n uint32, b byte) uint16 {
|
|
offset := t.offset[n]
|
|
header := t.values[offset]
|
|
lo := offset + 1
|
|
hi := lo + uint16(header.lo)
|
|
for lo < hi {
|
|
m := lo + (hi-lo)/2
|
|
r := t.values[m]
|
|
if r.lo <= b && b <= r.hi {
|
|
return r.value + uint16(b-r.lo)*header.value
|
|
}
|
|
if b < r.lo {
|
|
hi = m
|
|
} else {
|
|
lo = m + 1
|
|
}
|
|
}
|
|
return 0
|
|
}
|