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