Use mattermost v5 module (#1192)

1 files changed, 0 insertions, 664 deletions

diff --git a/vendor/github.com/mattermost/mattermost-server/utils/markdown/inlines.go b/vendor/github.com/mattermost/mattermost-server/utils/markdown/inlines.go
deleted file mode 100644
index a3abccef..00000000
--- a/vendor/github.com/mattermost/mattermost-server/utils/markdown/inlines.go
+++ /dev/null
@@ -1,664 +0,0 @@
-// Copyright (c) 2017-present Mattermost, Inc. All Rights Reserved.
-// See License.txt for license information.
-
-package markdown
-
-import (
-	"container/list"
-	"strings"
-	"unicode"
-	"unicode/utf8"
-)
-
-type Inline interface {
-	IsInline() bool
-}
-
-type inlineBase struct{}
-
-func (inlineBase) IsInline() bool { return true }
-
-type Text struct {
-	inlineBase
-
-	Text  string
-	Range Range
-}
-
-type CodeSpan struct {
-	inlineBase
-
-	Code string
-}
-
-type HardLineBreak struct {
-	inlineBase
-}
-
-type SoftLineBreak struct {
-	inlineBase
-}
-
-type InlineLinkOrImage struct {
-	inlineBase
-
-	Children []Inline
-
-	RawDestination Range
-
-	markdown string
-	rawTitle string
-}
-
-func (i *InlineLinkOrImage) Destination() string {
-	return Unescape(i.markdown[i.RawDestination.Position:i.RawDestination.End])
-}
-
-func (i *InlineLinkOrImage) Title() string {
-	return Unescape(i.rawTitle)
-}
-
-type InlineLink struct {
-	InlineLinkOrImage
-}
-
-type InlineImage struct {
-	InlineLinkOrImage
-}
-
-type ReferenceLinkOrImage struct {
-	inlineBase
-	*ReferenceDefinition
-
-	Children []Inline
-}
-
-type ReferenceLink struct {
-	ReferenceLinkOrImage
-}
-
-type ReferenceImage struct {
-	ReferenceLinkOrImage
-}
-
-type Autolink struct {
-	inlineBase
-
-	Children []Inline
-
-	RawDestination Range
-
-	markdown string
-}
-
-func (i *Autolink) Destination() string {
-	destination := Unescape(i.markdown[i.RawDestination.Position:i.RawDestination.End])
-
-	if strings.HasPrefix(destination, "www") {
-		destination = "http://" + destination
-	}
-
-	return destination
-}
-
-type delimiterType int
-
-const (
-	linkOpeningDelimiter delimiterType = iota
-	imageOpeningDelimiter
-)
-
-type delimiter struct {
-	Type       delimiterType
-	IsInactive bool
-	TextNode   int
-	Range      Range
-}
-
-type inlineParser struct {
-	markdown             string
-	ranges               []Range
-	referenceDefinitions []*ReferenceDefinition
-
-	raw            string
-	position       int
-	inlines        []Inline
-	delimiterStack *list.List
-}
-
-func newInlineParser(markdown string, ranges []Range, referenceDefinitions []*ReferenceDefinition) *inlineParser {
-	return &inlineParser{
-		markdown:             markdown,
-		ranges:               ranges,
-		referenceDefinitions: referenceDefinitions,
-		delimiterStack:       list.New(),
-	}
-}
-
-func (p *inlineParser) parseBackticks() {
-	count := 1
-	for i := p.position + 1; i < len(p.raw) && p.raw[i] == '`'; i++ {
-		count++
-	}
-	opening := p.raw[p.position : p.position+count]
-	search := p.position + count
-	for search < len(p.raw) {
-		end := strings.Index(p.raw[search:], opening)
-		if end == -1 {
-			break
-		}
-		if search+end+count < len(p.raw) && p.raw[search+end+count] == '`' {
-			search += end + count
-			for search < len(p.raw) && p.raw[search] == '`' {
-				search++
-			}
-			continue
-		}
-		code := strings.Join(strings.Fields(p.raw[p.position+count:search+end]), " ")
-		p.position = search + end + count
-		p.inlines = append(p.inlines, &CodeSpan{
-			Code: code,
-		})
-		return
-	}
-	p.position += len(opening)
-	absPos := relativeToAbsolutePosition(p.ranges, p.position-len(opening))
-	p.inlines = append(p.inlines, &Text{
-		Text:  opening,
-		Range: Range{absPos, absPos + len(opening)},
-	})
-}
-
-func (p *inlineParser) parseLineEnding() {
-	if p.position >= 1 && p.raw[p.position-1] == '\t' {
-		p.inlines = append(p.inlines, &HardLineBreak{})
-	} else if p.position >= 2 && p.raw[p.position-1] == ' ' && (p.raw[p.position-2] == '\t' || p.raw[p.position-1] == ' ') {
-		p.inlines = append(p.inlines, &HardLineBreak{})
-	} else {
-		p.inlines = append(p.inlines, &SoftLineBreak{})
-	}
-	p.position++
-	if p.position < len(p.raw) && p.raw[p.position] == '\n' {
-		p.position++
-	}
-}
-
-func (p *inlineParser) parseEscapeCharacter() {
-	if p.position+1 < len(p.raw) && isEscapableByte(p.raw[p.position+1]) {
-		absPos := relativeToAbsolutePosition(p.ranges, p.position+1)
-		p.inlines = append(p.inlines, &Text{
-			Text:  string(p.raw[p.position+1]),
-			Range: Range{absPos, absPos + len(string(p.raw[p.position+1]))},
-		})
-		p.position += 2
-	} else {
-		absPos := relativeToAbsolutePosition(p.ranges, p.position)
-		p.inlines = append(p.inlines, &Text{
-			Text:  `\`,
-			Range: Range{absPos, absPos + 1},
-		})
-		p.position++
-	}
-}
-
-func (p *inlineParser) parseText() {
-	if next := strings.IndexAny(p.raw[p.position:], "\r\n\\`&![]wW:"); next == -1 {
-		absPos := relativeToAbsolutePosition(p.ranges, p.position)
-		p.inlines = append(p.inlines, &Text{
-			Text:  strings.TrimRightFunc(p.raw[p.position:], isWhitespace),
-			Range: Range{absPos, absPos + len(p.raw[p.position:])},
-		})
-		p.position = len(p.raw)
-	} else {
-		absPos := relativeToAbsolutePosition(p.ranges, p.position)
-		if p.raw[p.position+next] == '\r' || p.raw[p.position+next] == '\n' {
-			s := strings.TrimRightFunc(p.raw[p.position:p.position+next], isWhitespace)
-			p.inlines = append(p.inlines, &Text{
-				Text:  s,
-				Range: Range{absPos, absPos + len(s)},
-			})
-		} else {
-			if next == 0 {
-				// Always read at least one character since 'w', 'W', and ':' may not actually match another
-				// type of node
-				next = 1
-			}
-
-			p.inlines = append(p.inlines, &Text{
-				Text:  p.raw[p.position : p.position+next],
-				Range: Range{absPos, absPos + next},
-			})
-		}
-		p.position += next
-	}
-}
-
-func (p *inlineParser) parseLinkOrImageDelimiter() {
-	absPos := relativeToAbsolutePosition(p.ranges, p.position)
-	if p.raw[p.position] == '[' {
-		p.inlines = append(p.inlines, &Text{
-			Text:  "[",
-			Range: Range{absPos, absPos + 1},
-		})
-		p.delimiterStack.PushBack(&delimiter{
-			Type:     linkOpeningDelimiter,
-			TextNode: len(p.inlines) - 1,
-			Range:    Range{p.position, p.position + 1},
-		})
-		p.position++
-	} else if p.raw[p.position] == '!' && p.position+1 < len(p.raw) && p.raw[p.position+1] == '[' {
-		p.inlines = append(p.inlines, &Text{
-			Text:  "![",
-			Range: Range{absPos, absPos + 2},
-		})
-		p.delimiterStack.PushBack(&delimiter{
-			Type:     imageOpeningDelimiter,
-			TextNode: len(p.inlines) - 1,
-			Range:    Range{p.position, p.position + 2},
-		})
-		p.position += 2
-	} else {
-		p.inlines = append(p.inlines, &Text{
-			Text:  "!",
-			Range: Range{absPos, absPos + 1},
-		})
-		p.position++
-	}
-}
-
-func (p *inlineParser) peekAtInlineLinkDestinationAndTitle(position int, isImage bool) (destination, title Range, end int, ok bool) {
-	if position >= len(p.raw) || p.raw[position] != '(' {
-		return
-	}
-	position++
-
-	destinationStart := nextNonWhitespace(p.raw, position)
-	if destinationStart >= len(p.raw) {
-		return
-	} else if p.raw[destinationStart] == ')' {
-		return Range{destinationStart, destinationStart}, Range{destinationStart, destinationStart}, destinationStart + 1, true
-	}
-
-	destination, end, ok = parseLinkDestination(p.raw, destinationStart)
-	if !ok {
-		return
-	}
-	position = end
-
-	if isImage && position < len(p.raw) && isWhitespaceByte(p.raw[position]) {
-		dimensionsStart := nextNonWhitespace(p.raw, position)
-		if dimensionsStart >= len(p.raw) {
-			return
-		}
-
-		if p.raw[dimensionsStart] == '=' {
-			// Read optional image dimensions even if we don't use them
-			_, end, ok = parseImageDimensions(p.raw, dimensionsStart)
-			if !ok {
-				return
-			}
-
-			position = end
-		}
-	}
-
-	if position < len(p.raw) && isWhitespaceByte(p.raw[position]) {
-		titleStart := nextNonWhitespace(p.raw, position)
-		if titleStart >= len(p.raw) {
-			return
-		} else if p.raw[titleStart] == ')' {
-			return destination, Range{titleStart, titleStart}, titleStart + 1, true
-		}
-
-		if p.raw[titleStart] == '"' || p.raw[titleStart] == '\'' || p.raw[titleStart] == '(' {
-			title, end, ok = parseLinkTitle(p.raw, titleStart)
-			if !ok {
-				return
-			}
-			position = end
-		}
-	}
-
-	closingPosition := nextNonWhitespace(p.raw, position)
-	if closingPosition >= len(p.raw) || p.raw[closingPosition] != ')' {
-		return Range{}, Range{}, 0, false
-	}
-
-	return destination, title, closingPosition + 1, true
-}
-
-func (p *inlineParser) referenceDefinition(label string) *ReferenceDefinition {
-	clean := strings.Join(strings.Fields(label), " ")
-	for _, d := range p.referenceDefinitions {
-		if strings.EqualFold(clean, strings.Join(strings.Fields(d.Label()), " ")) {
-			return d
-		}
-	}
-	return nil
-}
-
-func (p *inlineParser) lookForLinkOrImage() {
-	for element := p.delimiterStack.Back(); element != nil; element = element.Prev() {
-		d := element.Value.(*delimiter)
-		if d.Type != imageOpeningDelimiter && d.Type != linkOpeningDelimiter {
-			continue
-		}
-		if d.IsInactive {
-			p.delimiterStack.Remove(element)
-			break
-		}
-
-		isImage := d.Type == imageOpeningDelimiter
-
-		var inline Inline
-
-		if destination, title, next, ok := p.peekAtInlineLinkDestinationAndTitle(p.position+1, isImage); ok {
-			destinationMarkdownPosition := relativeToAbsolutePosition(p.ranges, destination.Position)
-			linkOrImage := InlineLinkOrImage{
-				Children:       append([]Inline(nil), p.inlines[d.TextNode+1:]...),
-				RawDestination: Range{destinationMarkdownPosition, destinationMarkdownPosition + destination.End - destination.Position},
-				markdown:       p.markdown,
-				rawTitle:       p.raw[title.Position:title.End],
-			}
-			if d.Type == imageOpeningDelimiter {
-				inline = &InlineImage{linkOrImage}
-			} else {
-				inline = &InlineLink{linkOrImage}
-			}
-			p.position = next
-		} else {
-			referenceLabel := ""
-			label, next, hasLinkLabel := parseLinkLabel(p.raw, p.position+1)
-			if hasLinkLabel && label.End > label.Position {
-				referenceLabel = p.raw[label.Position:label.End]
-			} else {
-				referenceLabel = p.raw[d.Range.End:p.position]
-				if !hasLinkLabel {
-					next = p.position + 1
-				}
-			}
-			if referenceLabel != "" {
-				if reference := p.referenceDefinition(referenceLabel); reference != nil {
-					linkOrImage := ReferenceLinkOrImage{
-						ReferenceDefinition: reference,
-						Children:            append([]Inline(nil), p.inlines[d.TextNode+1:]...),
-					}
-					if d.Type == imageOpeningDelimiter {
-						inline = &ReferenceImage{linkOrImage}
-					} else {
-						inline = &ReferenceLink{linkOrImage}
-					}
-					p.position = next
-				}
-			}
-		}
-
-		if inline != nil {
-			if d.Type == imageOpeningDelimiter {
-				p.inlines = append(p.inlines[:d.TextNode], inline)
-			} else {
-				p.inlines = append(p.inlines[:d.TextNode], inline)
-				for element := element.Prev(); element != nil; element = element.Prev() {
-					if d := element.Value.(*delimiter); d.Type == linkOpeningDelimiter {
-						d.IsInactive = true
-					}
-				}
-			}
-			p.delimiterStack.Remove(element)
-			return
-		} else {
-			p.delimiterStack.Remove(element)
-			break
-		}
-	}
-	absPos := relativeToAbsolutePosition(p.ranges, p.position)
-	p.inlines = append(p.inlines, &Text{
-		Text:  "]",
-		Range: Range{absPos, absPos + 1},
-	})
-	p.position++
-}
-
-func CharacterReference(ref string) string {
-	if ref == "" {
-		return ""
-	}
-	if ref[0] == '#' {
-		if len(ref) < 2 {
-			return ""
-		}
-		n := 0
-		if ref[1] == 'X' || ref[1] == 'x' {
-			if len(ref) < 3 {
-				return ""
-			}
-			for i := 2; i < len(ref); i++ {
-				if i > 9 {
-					return ""
-				}
-				d := ref[i]
-				switch {
-				case d >= '0' && d <= '9':
-					n = n*16 + int(d-'0')
-				case d >= 'a' && d <= 'f':
-					n = n*16 + 10 + int(d-'a')
-				case d >= 'A' && d <= 'F':
-					n = n*16 + 10 + int(d-'A')
-				default:
-					return ""
-				}
-			}
-		} else {
-			for i := 1; i < len(ref); i++ {
-				if i > 8 || ref[i] < '0' || ref[i] > '9' {
-					return ""
-				}
-				n = n*10 + int(ref[i]-'0')
-			}
-		}
-		c := rune(n)
-		if c == '\u0000' || !utf8.ValidRune(c) {
-			return string(unicode.ReplacementChar)
-		}
-		return string(c)
-	}
-	if entity, ok := htmlEntities[ref]; ok {
-		return entity
-	}
-	return ""
-}
-
-func (p *inlineParser) parseCharacterReference() {
-	absPos := relativeToAbsolutePosition(p.ranges, p.position)
-	p.position++
-	if semicolon := strings.IndexByte(p.raw[p.position:], ';'); semicolon == -1 {
-		p.inlines = append(p.inlines, &Text{
-			Text:  "&",
-			Range: Range{absPos, absPos + 1},
-		})
-	} else if s := CharacterReference(p.raw[p.position : p.position+semicolon]); s != "" {
-		p.position += semicolon + 1
-		p.inlines = append(p.inlines, &Text{
-			Text:  s,
-			Range: Range{absPos, absPos + len(s)},
-		})
-	} else {
-		p.inlines = append(p.inlines, &Text{
-			Text:  "&",
-			Range: Range{absPos, absPos + 1},
-		})
-	}
-}
-
-func (p *inlineParser) parseAutolink(c rune) bool {
-	for element := p.delimiterStack.Back(); element != nil; element = element.Prev() {
-		d := element.Value.(*delimiter)
-		if !d.IsInactive {
-			return false
-		}
-	}
-
-	var link Range
-	if c == ':' {
-		var ok bool
-		link, ok = parseURLAutolink(p.raw, p.position)
-
-		if !ok {
-			return false
-		}
-
-		// Since the current position is at the colon, we have to rewind the parsing slightly so that
-		// we don't duplicate the URL scheme
-		rewind := strings.Index(p.raw[link.Position:link.End], ":")
-		if rewind != -1 {
-			lastInline := p.inlines[len(p.inlines)-1]
-			lastText, ok := lastInline.(*Text)
-
-			if !ok {
-				// This should never occur since parseURLAutolink will only return a non-empty value
-				// when the previous text ends in a valid URL protocol which would mean that the previous
-				// node is a Text node
-				return false
-			}
-
-			p.inlines = p.inlines[0 : len(p.inlines)-1]
-			p.inlines = append(p.inlines, &Text{
-				Text:  lastText.Text[:len(lastText.Text)-rewind],
-				Range: Range{lastText.Range.Position, lastText.Range.End - rewind},
-			})
-			p.position -= rewind
-		}
-	} else if c == 'w' || c == 'W' {
-		var ok bool
-		link, ok = parseWWWAutolink(p.raw, p.position)
-
-		if !ok {
-			return false
-		}
-	}
-
-	linkMarkdownPosition := relativeToAbsolutePosition(p.ranges, link.Position)
-	linkRange := Range{linkMarkdownPosition, linkMarkdownPosition + link.End - link.Position}
-
-	p.inlines = append(p.inlines, &Autolink{
-		Children: []Inline{
-			&Text{
-				Text:  p.raw[link.Position:link.End],
-				Range: linkRange,
-			},
-		},
-		RawDestination: linkRange,
-		markdown:       p.markdown,
-	})
-	p.position += (link.End - link.Position)
-
-	return true
-}
-
-func (p *inlineParser) Parse() []Inline {
-	for _, r := range p.ranges {
-		p.raw += p.markdown[r.Position:r.End]
-	}
-
-	for p.position < len(p.raw) {
-		c, _ := utf8.DecodeRuneInString(p.raw[p.position:])
-
-		switch c {
-		case '\r', '\n':
-			p.parseLineEnding()
-		case '\\':
-			p.parseEscapeCharacter()
-		case '`':
-			p.parseBackticks()
-		case '&':
-			p.parseCharacterReference()
-		case '!', '[':
-			p.parseLinkOrImageDelimiter()
-		case ']':
-			p.lookForLinkOrImage()
-		case 'w', 'W', ':':
-			matched := p.parseAutolink(c)
-
-			if !matched {
-				p.parseText()
-			}
-		default:
-			p.parseText()
-		}
-	}
-
-	return p.inlines
-}
-
-func ParseInlines(markdown string, ranges []Range, referenceDefinitions []*ReferenceDefinition) (inlines []Inline) {
-	return newInlineParser(markdown, ranges, referenceDefinitions).Parse()
-}
-
-func MergeInlineText(inlines []Inline) []Inline {
-	var ret []Inline
-	for i, v := range inlines {
-		// always add first node
-		if i == 0 {
-			ret = append(ret, v)
-			continue
-		}
-		// not a text node? nothing to merge
-		text, ok := v.(*Text)
-		if !ok {
-			ret = append(ret, v)
-			continue
-		}
-		// previous node is not a text node? nothing to merge
-		prevText, ok := ret[len(ret)-1].(*Text)
-		if !ok {
-			ret = append(ret, v)
-			continue
-		}
-		// previous node is not right before this one
-		if prevText.Range.End != text.Range.Position {
-			ret = append(ret, v)
-			continue
-		}
-		// we have two consecutive text nodes
-		ret[len(ret)-1] = &Text{
-			Text:  prevText.Text + text.Text,
-			Range: Range{prevText.Range.Position, text.Range.End},
-		}
-	}
-	return ret
-}
-
-func Unescape(markdown string) string {
-	ret := ""
-
-	position := 0
-	for position < len(markdown) {
-		c, cSize := utf8.DecodeRuneInString(markdown[position:])
-
-		switch c {
-		case '\\':
-			if position+1 < len(markdown) && isEscapableByte(markdown[position+1]) {
-				ret += string(markdown[position+1])
-				position += 2
-			} else {
-				ret += `\`
-				position++
-			}
-		case '&':
-			position++
-			if semicolon := strings.IndexByte(markdown[position:], ';'); semicolon == -1 {
-				ret += "&"
-			} else if s := CharacterReference(markdown[position : position+semicolon]); s != "" {
-				position += semicolon + 1
-				ret += s
-			} else {
-				ret += "&"
-			}
-		default:
-			ret += string(c)
-			position += cSize
-		}
-	}
-
-	return ret
-}