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authorDaniel J Walsh <dwalsh@redhat.com>2018-03-26 18:26:55 -0400
committerAtomic Bot <atomic-devel@projectatomic.io>2018-03-27 18:09:12 +0000
commitaf64e10400f8533a0c48ecdf5ab9b7fbf329e14e (patch)
tree59160e3841b440dd35189c724bbb4375a7be173b /vendor/golang.org/x/text/width/width.go
parent26d7e3c7b85e28c4e42998c90fdcc14079f13eef (diff)
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Vendor in lots of kubernetes stuff to shrink image size
Signed-off-by: Daniel J Walsh <dwalsh@redhat.com> Closes: #554 Approved by: mheon
Diffstat (limited to 'vendor/golang.org/x/text/width/width.go')
-rw-r--r--vendor/golang.org/x/text/width/width.go206
1 files changed, 0 insertions, 206 deletions
diff --git a/vendor/golang.org/x/text/width/width.go b/vendor/golang.org/x/text/width/width.go
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index f1639ca68..000000000
--- a/vendor/golang.org/x/text/width/width.go
+++ /dev/null
@@ -1,206 +0,0 @@
-// 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.
-
-//go:generate stringer -type=Kind
-//go:generate go run gen.go gen_common.go gen_trieval.go
-
-// Package width provides functionality for handling different widths in text.
-//
-// Wide characters behave like ideographs; they tend to allow line breaks after
-// each character and remain upright in vertical text layout. Narrow characters
-// are kept together in words or runs that are rotated sideways in vertical text
-// layout.
-//
-// For more information, see http://unicode.org/reports/tr11/.
-package width // import "golang.org/x/text/width"
-
-import (
- "unicode/utf8"
-
- "golang.org/x/text/transform"
-)
-
-// TODO
-// 1) Reduce table size by compressing blocks.
-// 2) API proposition for computing display length
-// (approximation, fixed pitch only).
-// 3) Implement display length.
-
-// Kind indicates the type of width property as defined in http://unicode.org/reports/tr11/.
-type Kind int
-
-const (
- // Neutral characters do not occur in legacy East Asian character sets.
- Neutral Kind = iota
-
- // EastAsianAmbiguous characters that can be sometimes wide and sometimes
- // narrow and require additional information not contained in the character
- // code to further resolve their width.
- EastAsianAmbiguous
-
- // EastAsianWide characters are wide in its usual form. They occur only in
- // the context of East Asian typography. These runes may have explicit
- // halfwidth counterparts.
- EastAsianWide
-
- // EastAsianNarrow characters are narrow in its usual form. They often have
- // fullwidth counterparts.
- EastAsianNarrow
-
- // Note: there exist Narrow runes that do not have fullwidth or wide
- // counterparts, despite what the definition says (e.g. U+27E6).
-
- // EastAsianFullwidth characters have a compatibility decompositions of type
- // wide that map to a narrow counterpart.
- EastAsianFullwidth
-
- // EastAsianHalfwidth characters have a compatibility decomposition of type
- // narrow that map to a wide or ambiguous counterpart, plus U+20A9 ₩ WON
- // SIGN.
- EastAsianHalfwidth
-
- // Note: there exist runes that have a halfwidth counterparts but that are
- // classified as Ambiguous, rather than wide (e.g. U+2190).
-)
-
-// TODO: the generated tries need to return size 1 for invalid runes for the
-// width to be computed correctly (each byte should render width 1)
-
-var trie = newWidthTrie(0)
-
-// Lookup reports the Properties of the first rune in b and the number of bytes
-// of its UTF-8 encoding.
-func Lookup(b []byte) (p Properties, size int) {
- v, sz := trie.lookup(b)
- return Properties{elem(v), b[sz-1]}, sz
-}
-
-// LookupString reports the Properties of the first rune in s and the number of
-// bytes of its UTF-8 encoding.
-func LookupString(s string) (p Properties, size int) {
- v, sz := trie.lookupString(s)
- return Properties{elem(v), s[sz-1]}, sz
-}
-
-// LookupRune reports the Properties of rune r.
-func LookupRune(r rune) Properties {
- var buf [4]byte
- n := utf8.EncodeRune(buf[:], r)
- v, _ := trie.lookup(buf[:n])
- last := byte(r)
- if r >= utf8.RuneSelf {
- last = 0x80 + byte(r&0x3f)
- }
- return Properties{elem(v), last}
-}
-
-// Properties provides access to width properties of a rune.
-type Properties struct {
- elem elem
- last byte
-}
-
-func (e elem) kind() Kind {
- return Kind(e >> typeShift)
-}
-
-// Kind returns the Kind of a rune as defined in Unicode TR #11.
-// See http://unicode.org/reports/tr11/ for more details.
-func (p Properties) Kind() Kind {
- return p.elem.kind()
-}
-
-// Folded returns the folded variant of a rune or 0 if the rune is canonical.
-func (p Properties) Folded() rune {
- if p.elem&tagNeedsFold != 0 {
- buf := inverseData[byte(p.elem)]
- buf[buf[0]] ^= p.last
- r, _ := utf8.DecodeRune(buf[1 : 1+buf[0]])
- return r
- }
- return 0
-}
-
-// Narrow returns the narrow variant of a rune or 0 if the rune is already
-// narrow or doesn't have a narrow variant.
-func (p Properties) Narrow() rune {
- if k := p.elem.kind(); byte(p.elem) != 0 && (k == EastAsianFullwidth || k == EastAsianWide || k == EastAsianAmbiguous) {
- buf := inverseData[byte(p.elem)]
- buf[buf[0]] ^= p.last
- r, _ := utf8.DecodeRune(buf[1 : 1+buf[0]])
- return r
- }
- return 0
-}
-
-// Wide returns the wide variant of a rune or 0 if the rune is already
-// wide or doesn't have a wide variant.
-func (p Properties) Wide() rune {
- if k := p.elem.kind(); byte(p.elem) != 0 && (k == EastAsianHalfwidth || k == EastAsianNarrow) {
- buf := inverseData[byte(p.elem)]
- buf[buf[0]] ^= p.last
- r, _ := utf8.DecodeRune(buf[1 : 1+buf[0]])
- return r
- }
- return 0
-}
-
-// TODO for Properties:
-// - Add Fullwidth/Halfwidth or Inverted methods for computing variants
-// mapping.
-// - Add width information (including information on non-spacing runes).
-
-// Transformer implements the transform.Transformer interface.
-type Transformer struct {
- t transform.SpanningTransformer
-}
-
-// Reset implements the transform.Transformer interface.
-func (t Transformer) Reset() { t.t.Reset() }
-
-// Transform implements the transform.Transformer interface.
-func (t Transformer) Transform(dst, src []byte, atEOF bool) (nDst, nSrc int, err error) {
- return t.t.Transform(dst, src, atEOF)
-}
-
-// Span implements the transform.SpanningTransformer interface.
-func (t Transformer) Span(src []byte, atEOF bool) (n int, err error) {
- return t.t.Span(src, atEOF)
-}
-
-// Bytes returns a new byte slice with the result of applying t to b.
-func (t Transformer) Bytes(b []byte) []byte {
- b, _, _ = transform.Bytes(t, b)
- return b
-}
-
-// String returns a string with the result of applying t to s.
-func (t Transformer) String(s string) string {
- s, _, _ = transform.String(t, s)
- return s
-}
-
-var (
- // Fold is a transform that maps all runes to their canonical width.
- //
- // Note that the NFKC and NFKD transforms in golang.org/x/text/unicode/norm
- // provide a more generic folding mechanism.
- Fold Transformer = Transformer{foldTransform{}}
-
- // Widen is a transform that maps runes to their wide variant, if
- // available.
- Widen Transformer = Transformer{wideTransform{}}
-
- // Narrow is a transform that maps runes to their narrow variant, if
- // available.
- Narrow Transformer = Transformer{narrowTransform{}}
-)
-
-// TODO: Consider the following options:
-// - Treat Ambiguous runes that have a halfwidth counterpart as wide, or some
-// generalized variant of this.
-// - Consider a wide Won character to be the default width (or some generalized
-// variant of this).
-// - Filter the set of characters that gets converted (the preferred approach is
-// to allow applying filters to transforms).