76 lines
1.9 KiB
Go
76 lines
1.9 KiB
Go
// Copyright (c) 2017-present Mattermost, Inc. All Rights Reserved.
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// See License.txt for license information.
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package markdown
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type ReferenceDefinition struct {
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RawDestination Range
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markdown string
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rawLabel string
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rawTitle string
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}
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func (d *ReferenceDefinition) Destination() string {
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return Unescape(d.markdown[d.RawDestination.Position:d.RawDestination.End])
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}
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func (d *ReferenceDefinition) Label() string {
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return d.rawLabel
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}
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func (d *ReferenceDefinition) Title() string {
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return Unescape(d.rawTitle)
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}
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func parseReferenceDefinition(markdown string, ranges []Range) (*ReferenceDefinition, []Range) {
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raw := ""
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for _, r := range ranges {
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raw += markdown[r.Position:r.End]
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}
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label, next, ok := parseLinkLabel(raw, 0)
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if !ok {
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return nil, nil
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}
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position := next
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if position >= len(raw) || raw[position] != ':' {
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return nil, nil
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}
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position++
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destination, next, ok := parseLinkDestination(raw, nextNonWhitespace(raw, position))
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if !ok {
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return nil, nil
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}
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position = next
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absoluteDestination := relativeToAbsolutePosition(ranges, destination.Position)
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ret := &ReferenceDefinition{
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RawDestination: Range{absoluteDestination, absoluteDestination + destination.End - destination.Position},
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markdown: markdown,
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rawLabel: raw[label.Position:label.End],
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}
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if position < len(raw) && isWhitespaceByte(raw[position]) {
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title, next, ok := parseLinkTitle(raw, nextNonWhitespace(raw, position))
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if !ok {
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if nextLine, skippedNonWhitespace := nextLine(raw, position); !skippedNonWhitespace {
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return ret, trimBytesFromRanges(ranges, nextLine)
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}
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return nil, nil
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}
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if nextLine, skippedNonWhitespace := nextLine(raw, next); !skippedNonWhitespace {
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ret.rawTitle = raw[title.Position:title.End]
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return ret, trimBytesFromRanges(ranges, nextLine)
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}
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}
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if nextLine, skippedNonWhitespace := nextLine(raw, position); !skippedNonWhitespace {
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return ret, trimBytesFromRanges(ranges, nextLine)
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}
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return nil, nil
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}
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