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author | Corey Hulen <corey@hulen.com> | 2017-03-24 23:31:34 -0700 |
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committer | enahum <nahumhbl@gmail.com> | 2017-03-25 03:31:34 -0300 |
commit | 54d3d47daf9190275bbdaf8703b84969a4593451 (patch) | |
tree | 05899b296d0186c1a0da8a540bc486e34ad8eec9 /vendor/golang.org/x/text/internal/export/idna/trie.go | |
parent | 7460302dec7796e01c98264e84bece8169cb6ed9 (diff) | |
download | chat-54d3d47daf9190275bbdaf8703b84969a4593451.tar.gz chat-54d3d47daf9190275bbdaf8703b84969a4593451.tar.bz2 chat-54d3d47daf9190275bbdaf8703b84969a4593451.zip |
PLT-6076 Adding viper libs for config file changes (#5871)
* Adding viper libs for config file changes
* Removing the old fsnotify lib
* updating some missing libs
Diffstat (limited to 'vendor/golang.org/x/text/internal/export/idna/trie.go')
-rw-r--r-- | vendor/golang.org/x/text/internal/export/idna/trie.go | 70 |
1 files changed, 70 insertions, 0 deletions
diff --git a/vendor/golang.org/x/text/internal/export/idna/trie.go b/vendor/golang.org/x/text/internal/export/idna/trie.go new file mode 100644 index 000000000..d90996886 --- /dev/null +++ b/vendor/golang.org/x/text/internal/export/idna/trie.go @@ -0,0 +1,70 @@ +// 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 +} |