vendorify
diff --git a/go/vendor/golang.org/x/text/width/gen_common.go b/go/vendor/golang.org/x/text/width/gen_common.go
new file mode 100644
index 0000000..601e752
--- /dev/null
+++ b/go/vendor/golang.org/x/text/width/gen_common.go
@@ -0,0 +1,96 @@
+// Copyright 2015 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.
+
+// +build ignore
+
+package main
+
+// This code is shared between the main code generator and the test code.
+
+import (
+ "flag"
+ "log"
+ "strconv"
+ "strings"
+
+ "golang.org/x/text/internal/gen"
+ "golang.org/x/text/internal/ucd"
+)
+
+var (
+ outputFile = flag.String("out", "tables.go", "output file")
+)
+
+var typeMap = map[string]elem{
+ "A": tagAmbiguous,
+ "N": tagNeutral,
+ "Na": tagNarrow,
+ "W": tagWide,
+ "F": tagFullwidth,
+ "H": tagHalfwidth,
+}
+
+// getWidthData calls f for every entry for which it is defined.
+//
+// f may be called multiple times for the same rune. The last call to f is the
+// correct value. f is not called for all runes. The default tag type is
+// Neutral.
+func getWidthData(f func(r rune, tag elem, alt rune)) {
+ // Set the default values for Unified Ideographs. In line with Annex 11,
+ // we encode full ranges instead of the defined runes in Unified_Ideograph.
+ for _, b := range []struct{ lo, hi rune }{
+ {0x4E00, 0x9FFF}, // the CJK Unified Ideographs block,
+ {0x3400, 0x4DBF}, // the CJK Unified Ideographs Externsion A block,
+ {0xF900, 0xFAFF}, // the CJK Compatibility Ideographs block,
+ {0x20000, 0x2FFFF}, // the Supplementary Ideographic Plane,
+ {0x30000, 0x3FFFF}, // the Tertiary Ideographic Plane,
+ } {
+ for r := b.lo; r <= b.hi; r++ {
+ f(r, tagWide, 0)
+ }
+ }
+
+ inverse := map[rune]rune{}
+ maps := map[string]bool{
+ "<wide>": true,
+ "<narrow>": true,
+ }
+
+ // We cannot reuse package norm's decomposition, as we need an unexpanded
+ // decomposition. We make use of the opportunity to verify that the
+ // decomposition type is as expected.
+ ucd.Parse(gen.OpenUCDFile("UnicodeData.txt"), func(p *ucd.Parser) {
+ r := p.Rune(0)
+ s := strings.SplitN(p.String(ucd.DecompMapping), " ", 2)
+ if !maps[s[0]] {
+ return
+ }
+ x, err := strconv.ParseUint(s[1], 16, 32)
+ if err != nil {
+ log.Fatalf("Error parsing rune %q", s[1])
+ }
+ if inverse[r] != 0 || inverse[rune(x)] != 0 {
+ log.Fatalf("Circular dependency in mapping between %U and %U", r, x)
+ }
+ inverse[r] = rune(x)
+ inverse[rune(x)] = r
+ })
+
+ // <rune range>;<type>
+ ucd.Parse(gen.OpenUCDFile("EastAsianWidth.txt"), func(p *ucd.Parser) {
+ tag, ok := typeMap[p.String(1)]
+ if !ok {
+ log.Fatalf("Unknown width type %q", p.String(1))
+ }
+ r := p.Rune(0)
+ alt, ok := inverse[r]
+ if tag == tagFullwidth || tag == tagHalfwidth && r != wonSign {
+ tag |= tagNeedsFold
+ if !ok {
+ log.Fatalf("Narrow or wide rune %U has no decomposition", r)
+ }
+ }
+ f(r, tag, alt)
+ })
+}