Hulk did something

[bytom/vapor.git] / vendor / golang.org / x / text / unicode / runenames / runenames.go

diff --git a/vendor/golang.org/x/text/unicode/runenames/runenames.go b/vendor/golang.org/x/text/unicode/runenames/runenames.go
new file mode 100644 (file)
index 0000000..3154a22
--- /dev/null
+++ b/vendor/golang.org/x/text/unicode/runenames/runenames.go
@@ -0,0 +1,48 @@
+// 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.
+
+//go:generate go run gen.go gen_bits.go
+
+// Package runenames provides rune names from the Unicode Character Database.
+// For example, the name for '\u0100' is "LATIN CAPITAL LETTER A WITH MACRON".
+//
+// See http://www.unicode.org/Public/UCD/latest/ucd/UnicodeData.txt
+package runenames
+
+import (
+       "sort"
+)
+
+// Name returns the name for r.
+func Name(r rune) string {
+       i := sort.Search(len(table0), func(j int) bool {
+               e := table0[j]
+               rOffset := rune(e >> shiftRuneOffset)
+               return r < rOffset
+       })
+       if i == 0 {
+               return ""
+       }
+
+       e := table0[i-1]
+       rOffset := rune(e >> shiftRuneOffset)
+       rLength := rune(e>>shiftRuneLength) & maskRuneLength
+       if r >= rOffset+rLength {
+               return ""
+       }
+
+       if (e>>shiftDirect)&maskDirect != 0 {
+               o := int(e>>shiftDataOffset) & maskDataOffset
+               n := int(e>>shiftDataLength) & maskDataLength
+               return data[o : o+n]
+       }
+
+       base := uint32(e>>shiftDataBase) & maskDataBase
+       base <<= dataBaseUnit
+       j := rune(e>>shiftTable1Offset) & maskTable1Offset
+       j += r - rOffset
+       d0 := base + uint32(table1[j-1]) // dataOffset
+       d1 := base + uint32(table1[j-0]) // dataOffset + dataLength
+       return data[d0:d1]
+}