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27757714d0
* Move to goldmark Markdown rendering moved from blackfriday to the goldmark. Multiple subtle changes required to the goldmark extensions to keep current rendering and defaults. Can go further with goldmark linkify and have this work within markdown rendering making the link processor unnecessary. Need to think about how to go about allowing extensions - at present it seems that these would be hard to do without recompilation. * linter fixes Co-authored-by: Lauris BH <lauris@nix.lv>
79 lines
1.9 KiB
Go
79 lines
1.9 KiB
Go
package parser
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import (
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"github.com/yuin/goldmark/ast"
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"github.com/yuin/goldmark/text"
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"github.com/yuin/goldmark/util"
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)
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type codeBlockParser struct {
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}
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// CodeBlockParser is a BlockParser implementation that parses indented code blocks.
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var defaultCodeBlockParser = &codeBlockParser{}
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// NewCodeBlockParser returns a new BlockParser that
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// parses code blocks.
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func NewCodeBlockParser() BlockParser {
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return defaultCodeBlockParser
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}
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func (b *codeBlockParser) Trigger() []byte {
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return nil
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}
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func (b *codeBlockParser) Open(parent ast.Node, reader text.Reader, pc Context) (ast.Node, State) {
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line, segment := reader.PeekLine()
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pos, padding := util.IndentPosition(line, reader.LineOffset(), 4)
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if pos < 0 || util.IsBlank(line) {
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return nil, NoChildren
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}
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node := ast.NewCodeBlock()
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reader.AdvanceAndSetPadding(pos, padding)
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_, segment = reader.PeekLine()
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node.Lines().Append(segment)
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reader.Advance(segment.Len() - 1)
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return node, NoChildren
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}
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func (b *codeBlockParser) Continue(node ast.Node, reader text.Reader, pc Context) State {
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line, segment := reader.PeekLine()
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if util.IsBlank(line) {
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node.Lines().Append(segment.TrimLeftSpaceWidth(4, reader.Source()))
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return Continue | NoChildren
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}
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pos, padding := util.IndentPosition(line, reader.LineOffset(), 4)
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if pos < 0 {
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return Close
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}
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reader.AdvanceAndSetPadding(pos, padding)
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_, segment = reader.PeekLine()
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node.Lines().Append(segment)
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reader.Advance(segment.Len() - 1)
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return Continue | NoChildren
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}
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func (b *codeBlockParser) Close(node ast.Node, reader text.Reader, pc Context) {
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// trim trailing blank lines
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lines := node.Lines()
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length := lines.Len() - 1
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source := reader.Source()
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for length >= 0 {
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line := lines.At(length)
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if util.IsBlank(line.Value(source)) {
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length--
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} else {
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break
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}
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}
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lines.SetSliced(0, length+1)
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}
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func (b *codeBlockParser) CanInterruptParagraph() bool {
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return false
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}
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func (b *codeBlockParser) CanAcceptIndentedLine() bool {
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return true
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}
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