1 files changed, 0 insertions, 609 deletions
diff --git a/vendor/golang.org/x/text/unicode/norm/normalize.go b/vendor/golang.org/x/text/unicode/norm/normalize.go
deleted file mode 100644
index 95efcf2..0000000
--- a/vendor/golang.org/x/text/unicode/norm/normalize.go
+++ /dev/null
@@ -1,609 +0,0 @@
-// Copyright 2011 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.
-
-// Note: the file data_test.go that is generated should not be checked in.
-//go:generate go run maketables.go triegen.go
-//go:generate go test -tags test
-
-// Package norm contains types and functions for normalizing Unicode strings.
-package norm // import "golang.org/x/text/unicode/norm"
-
-import (
-	"unicode/utf8"
-
-	"golang.org/x/text/transform"
-)
-
-// A Form denotes a canonical representation of Unicode code points.
-// The Unicode-defined normalization and equivalence forms are:
-//
-//   NFC   Unicode Normalization Form C
-//   NFD   Unicode Normalization Form D
-//   NFKC  Unicode Normalization Form KC
-//   NFKD  Unicode Normalization Form KD
-//
-// For a Form f, this documentation uses the notation f(x) to mean
-// the bytes or string x converted to the given form.
-// A position n in x is called a boundary if conversion to the form can
-// proceed independently on both sides:
-//   f(x) == append(f(x[0:n]), f(x[n:])...)
-//
-// References: https://unicode.org/reports/tr15/ and
-// https://unicode.org/notes/tn5/.
-type Form int
-
-const (
-	NFC Form = iota
-	NFD
-	NFKC
-	NFKD
-)
-
-// Bytes returns f(b). May return b if f(b) = b.
-func (f Form) Bytes(b []byte) []byte {
-	src := inputBytes(b)
-	ft := formTable[f]
-	n, ok := ft.quickSpan(src, 0, len(b), true)
-	if ok {
-		return b
-	}
-	out := make([]byte, n, len(b))
-	copy(out, b[0:n])
-	rb := reorderBuffer{f: *ft, src: src, nsrc: len(b), out: out, flushF: appendFlush}
-	return doAppendInner(&rb, n)
-}
-
-// String returns f(s).
-func (f Form) String(s string) string {
-	src := inputString(s)
-	ft := formTable[f]
-	n, ok := ft.quickSpan(src, 0, len(s), true)
-	if ok {
-		return s
-	}
-	out := make([]byte, n, len(s))
-	copy(out, s[0:n])
-	rb := reorderBuffer{f: *ft, src: src, nsrc: len(s), out: out, flushF: appendFlush}
-	return string(doAppendInner(&rb, n))
-}
-
-// IsNormal returns true if b == f(b).
-func (f Form) IsNormal(b []byte) bool {
-	src := inputBytes(b)
-	ft := formTable[f]
-	bp, ok := ft.quickSpan(src, 0, len(b), true)
-	if ok {
-		return true
-	}
-	rb := reorderBuffer{f: *ft, src: src, nsrc: len(b)}
-	rb.setFlusher(nil, cmpNormalBytes)
-	for bp < len(b) {
-		rb.out = b[bp:]
-		if bp = decomposeSegment(&rb, bp, true); bp < 0 {
-			return false
-		}
-		bp, _ = rb.f.quickSpan(rb.src, bp, len(b), true)
-	}
-	return true
-}
-
-func cmpNormalBytes(rb *reorderBuffer) bool {
-	b := rb.out
-	for i := 0; i < rb.nrune; i++ {
-		info := rb.rune[i]
-		if int(info.size) > len(b) {
-			return false
-		}
-		p := info.pos
-		pe := p + info.size
-		for ; p < pe; p++ {
-			if b[0] != rb.byte[p] {
-				return false
-			}
-			b = b[1:]
-		}
-	}
-	return true
-}
-
-// IsNormalString returns true if s == f(s).
-func (f Form) IsNormalString(s string) bool {
-	src := inputString(s)
-	ft := formTable[f]
-	bp, ok := ft.quickSpan(src, 0, len(s), true)
-	if ok {
-		return true
-	}
-	rb := reorderBuffer{f: *ft, src: src, nsrc: len(s)}
-	rb.setFlusher(nil, func(rb *reorderBuffer) bool {
-		for i := 0; i < rb.nrune; i++ {
-			info := rb.rune[i]
-			if bp+int(info.size) > len(s) {
-				return false
-			}
-			p := info.pos
-			pe := p + info.size
-			for ; p < pe; p++ {
-				if s[bp] != rb.byte[p] {
-					return false
-				}
-				bp++
-			}
-		}
-		return true
-	})
-	for bp < len(s) {
-		if bp = decomposeSegment(&rb, bp, true); bp < 0 {
-			return false
-		}
-		bp, _ = rb.f.quickSpan(rb.src, bp, len(s), true)
-	}
-	return true
-}
-
-// patchTail fixes a case where a rune may be incorrectly normalized
-// if it is followed by illegal continuation bytes. It returns the
-// patched buffer and whether the decomposition is still in progress.
-func patchTail(rb *reorderBuffer) bool {
-	info, p := lastRuneStart(&rb.f, rb.out)
-	if p == -1 || info.size == 0 {
-		return true
-	}
-	end := p + int(info.size)
-	extra := len(rb.out) - end
-	if extra > 0 {
-		// Potentially allocating memory. However, this only
-		// happens with ill-formed UTF-8.
-		x := make([]byte, 0)
-		x = append(x, rb.out[len(rb.out)-extra:]...)
-		rb.out = rb.out[:end]
-		decomposeToLastBoundary(rb)
-		rb.doFlush()
-		rb.out = append(rb.out, x...)
-		return false
-	}
-	buf := rb.out[p:]
-	rb.out = rb.out[:p]
-	decomposeToLastBoundary(rb)
-	if s := rb.ss.next(info); s == ssStarter {
-		rb.doFlush()
-		rb.ss.first(info)
-	} else if s == ssOverflow {
-		rb.doFlush()
-		rb.insertCGJ()
-		rb.ss = 0
-	}
-	rb.insertUnsafe(inputBytes(buf), 0, info)
-	return true
-}
-
-func appendQuick(rb *reorderBuffer, i int) int {
-	if rb.nsrc == i {
-		return i
-	}
-	end, _ := rb.f.quickSpan(rb.src, i, rb.nsrc, true)
-	rb.out = rb.src.appendSlice(rb.out, i, end)
-	return end
-}
-
-// Append returns f(append(out, b...)).
-// The buffer out must be nil, empty, or equal to f(out).
-func (f Form) Append(out []byte, src ...byte) []byte {
-	return f.doAppend(out, inputBytes(src), len(src))
-}
-
-func (f Form) doAppend(out []byte, src input, n int) []byte {
-	if n == 0 {
-		return out
-	}
-	ft := formTable[f]
-	// Attempt to do a quickSpan first so we can avoid initializing the reorderBuffer.
-	if len(out) == 0 {
-		p, _ := ft.quickSpan(src, 0, n, true)
-		out = src.appendSlice(out, 0, p)
-		if p == n {
-			return out
-		}
-		rb := reorderBuffer{f: *ft, src: src, nsrc: n, out: out, flushF: appendFlush}
-		return doAppendInner(&rb, p)
-	}
-	rb := reorderBuffer{f: *ft, src: src, nsrc: n}
-	return doAppend(&rb, out, 0)
-}
-
-func doAppend(rb *reorderBuffer, out []byte, p int) []byte {
-	rb.setFlusher(out, appendFlush)
-	src, n := rb.src, rb.nsrc
-	doMerge := len(out) > 0
-	if q := src.skipContinuationBytes(p); q > p {
-		// Move leading non-starters to destination.
-		rb.out = src.appendSlice(rb.out, p, q)
-		p = q
-		doMerge = patchTail(rb)
-	}
-	fd := &rb.f
-	if doMerge {
-		var info Properties
-		if p < n {
-			info = fd.info(src, p)
-			if !info.BoundaryBefore() || info.nLeadingNonStarters() > 0 {
-				if p == 0 {
-					decomposeToLastBoundary(rb)
-				}
-				p = decomposeSegment(rb, p, true)
-			}
-		}
-		if info.size == 0 {
-			rb.doFlush()
-			// Append incomplete UTF-8 encoding.
-			return src.appendSlice(rb.out, p, n)
-		}
-		if rb.nrune > 0 {
-			return doAppendInner(rb, p)
-		}
-	}
-	p = appendQuick(rb, p)
-	return doAppendInner(rb, p)
-}
-
-func doAppendInner(rb *reorderBuffer, p int) []byte {
-	for n := rb.nsrc; p < n; {
-		p = decomposeSegment(rb, p, true)
-		p = appendQuick(rb, p)
-	}
-	return rb.out
-}
-
-// AppendString returns f(append(out, []byte(s))).
-// The buffer out must be nil, empty, or equal to f(out).
-func (f Form) AppendString(out []byte, src string) []byte {
-	return f.doAppend(out, inputString(src), len(src))
-}
-
-// QuickSpan returns a boundary n such that b[0:n] == f(b[0:n]).
-// It is not guaranteed to return the largest such n.
-func (f Form) QuickSpan(b []byte) int {
-	n, _ := formTable[f].quickSpan(inputBytes(b), 0, len(b), true)
-	return n
-}
-
-// Span implements transform.SpanningTransformer. It returns a boundary n such
-// that b[0:n] == f(b[0:n]). It is not guaranteed to return the largest such n.
-func (f Form) Span(b []byte, atEOF bool) (n int, err error) {
-	n, ok := formTable[f].quickSpan(inputBytes(b), 0, len(b), atEOF)
-	if n < len(b) {
-		if !ok {
-			err = transform.ErrEndOfSpan
-		} else {
-			err = transform.ErrShortSrc
-		}
-	}
-	return n, err
-}
-
-// SpanString returns a boundary n such that s[0:n] == f(s[0:n]).
-// It is not guaranteed to return the largest such n.
-func (f Form) SpanString(s string, atEOF bool) (n int, err error) {
-	n, ok := formTable[f].quickSpan(inputString(s), 0, len(s), atEOF)
-	if n < len(s) {
-		if !ok {
-			err = transform.ErrEndOfSpan
-		} else {
-			err = transform.ErrShortSrc
-		}
-	}
-	return n, err
-}
-
-// quickSpan returns a boundary n such that src[0:n] == f(src[0:n]) and
-// whether any non-normalized parts were found. If atEOF is false, n will
-// not point past the last segment if this segment might be become
-// non-normalized by appending other runes.
-func (f *formInfo) quickSpan(src input, i, end int, atEOF bool) (n int, ok bool) {
-	var lastCC uint8
-	ss := streamSafe(0)
-	lastSegStart := i
-	for n = end; i < n; {
-		if j := src.skipASCII(i, n); i != j {
-			i = j
-			lastSegStart = i - 1
-			lastCC = 0
-			ss = 0
-			continue
-		}
-		info := f.info(src, i)
-		if info.size == 0 {
-			if atEOF {
-				// include incomplete runes
-				return n, true
-			}
-			return lastSegStart, true
-		}
-		// This block needs to be before the next, because it is possible to
-		// have an overflow for runes that are starters (e.g. with U+FF9E).
-		switch ss.next(info) {
-		case ssStarter:
-			lastSegStart = i
-		case ssOverflow:
-			return lastSegStart, false
-		case ssSuccess:
-			if lastCC > info.ccc {
-				return lastSegStart, false
-			}
-		}
-		if f.composing {
-			if !info.isYesC() {
-				break
-			}
-		} else {
-			if !info.isYesD() {
-				break
-			}
-		}
-		lastCC = info.ccc
-		i += int(info.size)
-	}
-	if i == n {
-		if !atEOF {
-			n = lastSegStart
-		}
-		return n, true
-	}
-	return lastSegStart, false
-}
-
-// QuickSpanString returns a boundary n such that s[0:n] == f(s[0:n]).
-// It is not guaranteed to return the largest such n.
-func (f Form) QuickSpanString(s string) int {
-	n, _ := formTable[f].quickSpan(inputString(s), 0, len(s), true)
-	return n
-}
-
-// FirstBoundary returns the position i of the first boundary in b
-// or -1 if b contains no boundary.
-func (f Form) FirstBoundary(b []byte) int {
-	return f.firstBoundary(inputBytes(b), len(b))
-}
-
-func (f Form) firstBoundary(src input, nsrc int) int {
-	i := src.skipContinuationBytes(0)
-	if i >= nsrc {
-		return -1
-	}
-	fd := formTable[f]
-	ss := streamSafe(0)
-	// We should call ss.first here, but we can't as the first rune is
-	// skipped already. This means FirstBoundary can't really determine
-	// CGJ insertion points correctly. Luckily it doesn't have to.
-	for {
-		info := fd.info(src, i)
-		if info.size == 0 {
-			return -1
-		}
-		if s := ss.next(info); s != ssSuccess {
-			return i
-		}
-		i += int(info.size)
-		if i >= nsrc {
-			if !info.BoundaryAfter() && !ss.isMax() {
-				return -1
-			}
-			return nsrc
-		}
-	}
-}
-
-// FirstBoundaryInString returns the position i of the first boundary in s
-// or -1 if s contains no boundary.
-func (f Form) FirstBoundaryInString(s string) int {
-	return f.firstBoundary(inputString(s), len(s))
-}
-
-// NextBoundary reports the index of the boundary between the first and next
-// segment in b or -1 if atEOF is false and there are not enough bytes to
-// determine this boundary.
-func (f Form) NextBoundary(b []byte, atEOF bool) int {
-	return f.nextBoundary(inputBytes(b), len(b), atEOF)
-}
-
-// NextBoundaryInString reports the index of the boundary between the first and
-// next segment in b or -1 if atEOF is false and there are not enough bytes to
-// determine this boundary.
-func (f Form) NextBoundaryInString(s string, atEOF bool) int {
-	return f.nextBoundary(inputString(s), len(s), atEOF)
-}
-
-func (f Form) nextBoundary(src input, nsrc int, atEOF bool) int {
-	if nsrc == 0 {
-		if atEOF {
-			return 0
-		}
-		return -1
-	}
-	fd := formTable[f]
-	info := fd.info(src, 0)
-	if info.size == 0 {
-		if atEOF {
-			return 1
-		}
-		return -1
-	}
-	ss := streamSafe(0)
-	ss.first(info)
-
-	for i := int(info.size); i < nsrc; i += int(info.size) {
-		info = fd.info(src, i)
-		if info.size == 0 {
-			if atEOF {
-				return i
-			}
-			return -1
-		}
-		// TODO: Using streamSafe to determine the boundary isn't the same as
-		// using BoundaryBefore. Determine which should be used.
-		if s := ss.next(info); s != ssSuccess {
-			return i
-		}
-	}
-	if !atEOF && !info.BoundaryAfter() && !ss.isMax() {
-		return -1
-	}
-	return nsrc
-}
-
-// LastBoundary returns the position i of the last boundary in b
-// or -1 if b contains no boundary.
-func (f Form) LastBoundary(b []byte) int {
-	return lastBoundary(formTable[f], b)
-}
-
-func lastBoundary(fd *formInfo, b []byte) int {
-	i := len(b)
-	info, p := lastRuneStart(fd, b)
-	if p == -1 {
-		return -1
-	}
-	if info.size == 0 { // ends with incomplete rune
-		if p == 0 { // starts with incomplete rune
-			return -1
-		}
-		i = p
-		info, p = lastRuneStart(fd, b[:i])
-		if p == -1 { // incomplete UTF-8 encoding or non-starter bytes without a starter
-			return i
-		}
-	}
-	if p+int(info.size) != i { // trailing non-starter bytes: illegal UTF-8
-		return i
-	}
-	if info.BoundaryAfter() {
-		return i
-	}
-	ss := streamSafe(0)
-	v := ss.backwards(info)
-	for i = p; i >= 0 && v != ssStarter; i = p {
-		info, p = lastRuneStart(fd, b[:i])
-		if v = ss.backwards(info); v == ssOverflow {
-			break
-		}
-		if p+int(info.size) != i {
-			if p == -1 { // no boundary found
-				return -1
-			}
-			return i // boundary after an illegal UTF-8 encoding
-		}
-	}
-	return i
-}
-
-// decomposeSegment scans the first segment in src into rb. It inserts 0x034f
-// (Grapheme Joiner) when it encounters a sequence of more than 30 non-starters
-// and returns the number of bytes consumed from src or iShortDst or iShortSrc.
-func decomposeSegment(rb *reorderBuffer, sp int, atEOF bool) int {
-	// Force one character to be consumed.
-	info := rb.f.info(rb.src, sp)
-	if info.size == 0 {
-		return 0
-	}
-	if s := rb.ss.next(info); s == ssStarter {
-		// TODO: this could be removed if we don't support merging.
-		if rb.nrune > 0 {
-			goto end
-		}
-	} else if s == ssOverflow {
-		rb.insertCGJ()
-		goto end
-	}
-	if err := rb.insertFlush(rb.src, sp, info); err != iSuccess {
-		return int(err)
-	}
-	for {
-		sp += int(info.size)
-		if sp >= rb.nsrc {
-			if !atEOF && !info.BoundaryAfter() {
-				return int(iShortSrc)
-			}
-			break
-		}
-		info = rb.f.info(rb.src, sp)
-		if info.size == 0 {
-			if !atEOF {
-				return int(iShortSrc)
-			}
-			break
-		}
-		if s := rb.ss.next(info); s == ssStarter {
-			break
-		} else if s == ssOverflow {
-			rb.insertCGJ()
-			break
-		}
-		if err := rb.insertFlush(rb.src, sp, info); err != iSuccess {
-			return int(err)
-		}
-	}
-end:
-	if !rb.doFlush() {
-		return int(iShortDst)
-	}
-	return sp
-}
-
-// lastRuneStart returns the runeInfo and position of the last
-// rune in buf or the zero runeInfo and -1 if no rune was found.
-func lastRuneStart(fd *formInfo, buf []byte) (Properties, int) {
-	p := len(buf) - 1
-	for ; p >= 0 && !utf8.RuneStart(buf[p]); p-- {
-	}
-	if p < 0 {
-		return Properties{}, -1
-	}
-	return fd.info(inputBytes(buf), p), p
-}
-
-// decomposeToLastBoundary finds an open segment at the end of the buffer
-// and scans it into rb. Returns the buffer minus the last segment.
-func decomposeToLastBoundary(rb *reorderBuffer) {
-	fd := &rb.f
-	info, i := lastRuneStart(fd, rb.out)
-	if int(info.size) != len(rb.out)-i {
-		// illegal trailing continuation bytes
-		return
-	}
-	if info.BoundaryAfter() {
-		return
-	}
-	var add [maxNonStarters + 1]Properties // stores runeInfo in reverse order
-	padd := 0
-	ss := streamSafe(0)
-	p := len(rb.out)
-	for {
-		add[padd] = info
-		v := ss.backwards(info)
-		if v == ssOverflow {
-			// Note that if we have an overflow, it the string we are appending to
-			// is not correctly normalized. In this case the behavior is undefined.
-			break
-		}
-		padd++
-		p -= int(info.size)
-		if v == ssStarter || p < 0 {
-			break
-		}
-		info, i = lastRuneStart(fd, rb.out[:p])
-		if int(info.size) != p-i {
-			break
-		}
-	}
-	rb.ss = ss
-	// Copy bytes for insertion as we may need to overwrite rb.out.
-	var buf [maxBufferSize * utf8.UTFMax]byte
-	cp := buf[:copy(buf[:], rb.out[p:])]
-	rb.out = rb.out[:p]
-	for padd--; padd >= 0; padd-- {
-		info = add[padd]
-		rb.insertUnsafe(inputBytes(cp), 0, info)
-		cp = cp[info.size:]
-	}
-}