mirror of
https://github.com/superseriousbusiness/gotosocial.git
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[chore/bugfix] Switch markdown from blackfriday to goldmark (#1267)
Co-authored-by: Autumn! <autumnull@posteo.net>
This commit is contained in:
Autumn!
GitHub
parent
2b0342b231
commit
eb08529f35
71 changed files with 16261 additions and 8358 deletions
556
vendor/github.com/yuin/goldmark/extension/table.go
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vendored
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556
vendor/github.com/yuin/goldmark/extension/table.go
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package extension
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import (
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"bytes"
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"fmt"
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"regexp"
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"github.com/yuin/goldmark"
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gast "github.com/yuin/goldmark/ast"
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"github.com/yuin/goldmark/extension/ast"
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"github.com/yuin/goldmark/parser"
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"github.com/yuin/goldmark/renderer"
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"github.com/yuin/goldmark/renderer/html"
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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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var escapedPipeCellListKey = parser.NewContextKey()
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type escapedPipeCell struct {
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Cell *ast.TableCell
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Pos []int
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Transformed bool
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}
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// TableCellAlignMethod indicates how are table cells aligned in HTML format.indicates how are table cells aligned in HTML format.
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type TableCellAlignMethod int
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const (
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// TableCellAlignDefault renders alignments by default method.
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// With XHTML, alignments are rendered as an align attribute.
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// With HTML5, alignments are rendered as a style attribute.
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TableCellAlignDefault TableCellAlignMethod = iota
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// TableCellAlignAttribute renders alignments as an align attribute.
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TableCellAlignAttribute
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// TableCellAlignStyle renders alignments as a style attribute.
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TableCellAlignStyle
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// TableCellAlignNone does not care about alignments.
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// If you using classes or other styles, you can add these attributes
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// in an ASTTransformer.
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TableCellAlignNone
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)
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// TableConfig struct holds options for the extension.
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type TableConfig struct {
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html.Config
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// TableCellAlignMethod indicates how are table celss aligned.
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TableCellAlignMethod TableCellAlignMethod
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}
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// TableOption interface is a functional option interface for the extension.
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type TableOption interface {
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renderer.Option
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// SetTableOption sets given option to the extension.
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SetTableOption(*TableConfig)
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}
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// NewTableConfig returns a new Config with defaults.
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func NewTableConfig() TableConfig {
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return TableConfig{
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Config: html.NewConfig(),
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TableCellAlignMethod: TableCellAlignDefault,
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}
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}
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// SetOption implements renderer.SetOptioner.
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func (c *TableConfig) SetOption(name renderer.OptionName, value interface{}) {
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switch name {
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case optTableCellAlignMethod:
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c.TableCellAlignMethod = value.(TableCellAlignMethod)
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default:
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c.Config.SetOption(name, value)
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}
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}
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type withTableHTMLOptions struct {
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value []html.Option
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}
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func (o *withTableHTMLOptions) SetConfig(c *renderer.Config) {
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if o.value != nil {
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for _, v := range o.value {
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v.(renderer.Option).SetConfig(c)
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}
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}
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}
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func (o *withTableHTMLOptions) SetTableOption(c *TableConfig) {
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if o.value != nil {
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for _, v := range o.value {
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v.SetHTMLOption(&c.Config)
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}
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}
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}
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// WithTableHTMLOptions is functional option that wraps goldmark HTMLRenderer options.
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func WithTableHTMLOptions(opts ...html.Option) TableOption {
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return &withTableHTMLOptions{opts}
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}
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const optTableCellAlignMethod renderer.OptionName = "TableTableCellAlignMethod"
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type withTableCellAlignMethod struct {
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value TableCellAlignMethod
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}
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func (o *withTableCellAlignMethod) SetConfig(c *renderer.Config) {
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c.Options[optTableCellAlignMethod] = o.value
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}
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func (o *withTableCellAlignMethod) SetTableOption(c *TableConfig) {
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c.TableCellAlignMethod = o.value
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}
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// WithTableCellAlignMethod is a functional option that indicates how are table cells aligned in HTML format.
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func WithTableCellAlignMethod(a TableCellAlignMethod) TableOption {
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return &withTableCellAlignMethod{a}
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}
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func isTableDelim(bs []byte) bool {
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if w, _ := util.IndentWidth(bs, 0); w > 3 {
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return false
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}
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for _, b := range bs {
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if !(util.IsSpace(b) || b == '-' || b == '|' || b == ':') {
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return false
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}
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}
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return true
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}
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var tableDelimLeft = regexp.MustCompile(`^\s*\:\-+\s*$`)
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var tableDelimRight = regexp.MustCompile(`^\s*\-+\:\s*$`)
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var tableDelimCenter = regexp.MustCompile(`^\s*\:\-+\:\s*$`)
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var tableDelimNone = regexp.MustCompile(`^\s*\-+\s*$`)
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type tableParagraphTransformer struct {
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}
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var defaultTableParagraphTransformer = &tableParagraphTransformer{}
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// NewTableParagraphTransformer returns a new ParagraphTransformer
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// that can transform paragraphs into tables.
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func NewTableParagraphTransformer() parser.ParagraphTransformer {
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return defaultTableParagraphTransformer
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}
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func (b *tableParagraphTransformer) Transform(node *gast.Paragraph, reader text.Reader, pc parser.Context) {
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lines := node.Lines()
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if lines.Len() < 2 {
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return
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}
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for i := 1; i < lines.Len(); i++ {
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alignments := b.parseDelimiter(lines.At(i), reader)
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if alignments == nil {
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continue
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}
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header := b.parseRow(lines.At(i-1), alignments, true, reader, pc)
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if header == nil || len(alignments) != header.ChildCount() {
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return
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}
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table := ast.NewTable()
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table.Alignments = alignments
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table.AppendChild(table, ast.NewTableHeader(header))
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for j := i + 1; j < lines.Len(); j++ {
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table.AppendChild(table, b.parseRow(lines.At(j), alignments, false, reader, pc))
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}
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node.Lines().SetSliced(0, i-1)
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node.Parent().InsertAfter(node.Parent(), node, table)
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if node.Lines().Len() == 0 {
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node.Parent().RemoveChild(node.Parent(), node)
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} else {
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last := node.Lines().At(i - 2)
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last.Stop = last.Stop - 1 // trim last newline(\n)
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node.Lines().Set(i-2, last)
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}
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}
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}
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func (b *tableParagraphTransformer) parseRow(segment text.Segment, alignments []ast.Alignment, isHeader bool, reader text.Reader, pc parser.Context) *ast.TableRow {
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source := reader.Source()
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line := segment.Value(source)
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pos := 0
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pos += util.TrimLeftSpaceLength(line)
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limit := len(line)
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limit -= util.TrimRightSpaceLength(line)
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row := ast.NewTableRow(alignments)
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if len(line) > 0 && line[pos] == '|' {
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pos++
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}
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if len(line) > 0 && line[limit-1] == '|' {
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limit--
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}
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i := 0
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for ; pos < limit; i++ {
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alignment := ast.AlignNone
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if i >= len(alignments) {
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if !isHeader {
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return row
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}
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} else {
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alignment = alignments[i]
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}
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var escapedCell *escapedPipeCell
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node := ast.NewTableCell()
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node.Alignment = alignment
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hasBacktick := false
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closure := pos
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for ; closure < limit; closure++ {
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if line[closure] == '`' {
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hasBacktick = true
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}
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if line[closure] == '|' {
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if closure == 0 || line[closure-1] != '\\' {
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break
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} else if hasBacktick {
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if escapedCell == nil {
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escapedCell = &escapedPipeCell{node, []int{}, false}
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escapedList := pc.ComputeIfAbsent(escapedPipeCellListKey,
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func() interface{} {
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return []*escapedPipeCell{}
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}).([]*escapedPipeCell)
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escapedList = append(escapedList, escapedCell)
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pc.Set(escapedPipeCellListKey, escapedList)
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}
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escapedCell.Pos = append(escapedCell.Pos, segment.Start+closure-1)
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}
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}
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}
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seg := text.NewSegment(segment.Start+pos, segment.Start+closure)
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seg = seg.TrimLeftSpace(source)
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seg = seg.TrimRightSpace(source)
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node.Lines().Append(seg)
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row.AppendChild(row, node)
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pos = closure + 1
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}
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for ; i < len(alignments); i++ {
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row.AppendChild(row, ast.NewTableCell())
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}
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return row
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}
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func (b *tableParagraphTransformer) parseDelimiter(segment text.Segment, reader text.Reader) []ast.Alignment {
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line := segment.Value(reader.Source())
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if !isTableDelim(line) {
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return nil
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}
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cols := bytes.Split(line, []byte{'|'})
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if util.IsBlank(cols[0]) {
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cols = cols[1:]
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}
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if len(cols) > 0 && util.IsBlank(cols[len(cols)-1]) {
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cols = cols[:len(cols)-1]
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}
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var alignments []ast.Alignment
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for _, col := range cols {
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if tableDelimLeft.Match(col) {
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alignments = append(alignments, ast.AlignLeft)
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} else if tableDelimRight.Match(col) {
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alignments = append(alignments, ast.AlignRight)
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} else if tableDelimCenter.Match(col) {
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alignments = append(alignments, ast.AlignCenter)
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} else if tableDelimNone.Match(col) {
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alignments = append(alignments, ast.AlignNone)
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} else {
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return nil
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}
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}
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return alignments
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}
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type tableASTTransformer struct {
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}
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var defaultTableASTTransformer = &tableASTTransformer{}
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// NewTableASTTransformer returns a parser.ASTTransformer for tables.
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func NewTableASTTransformer() parser.ASTTransformer {
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return defaultTableASTTransformer
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}
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func (a *tableASTTransformer) Transform(node *gast.Document, reader text.Reader, pc parser.Context) {
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lst := pc.Get(escapedPipeCellListKey)
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if lst == nil {
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return
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}
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pc.Set(escapedPipeCellListKey, nil)
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for _, v := range lst.([]*escapedPipeCell) {
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if v.Transformed {
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continue
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}
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_ = gast.Walk(v.Cell, func(n gast.Node, entering bool) (gast.WalkStatus, error) {
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if !entering || n.Kind() != gast.KindCodeSpan {
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return gast.WalkContinue, nil
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}
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for c := n.FirstChild(); c != nil; {
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next := c.NextSibling()
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if c.Kind() != gast.KindText {
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c = next
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continue
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}
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parent := c.Parent()
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ts := &c.(*gast.Text).Segment
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n := c
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for _, v := range lst.([]*escapedPipeCell) {
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for _, pos := range v.Pos {
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if ts.Start <= pos && pos < ts.Stop {
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segment := n.(*gast.Text).Segment
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n1 := gast.NewRawTextSegment(segment.WithStop(pos))
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n2 := gast.NewRawTextSegment(segment.WithStart(pos + 1))
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parent.InsertAfter(parent, n, n1)
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parent.InsertAfter(parent, n1, n2)
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parent.RemoveChild(parent, n)
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n = n2
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v.Transformed = true
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}
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}
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}
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c = next
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}
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return gast.WalkContinue, nil
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})
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}
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}
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// TableHTMLRenderer is a renderer.NodeRenderer implementation that
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// renders Table nodes.
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type TableHTMLRenderer struct {
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TableConfig
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}
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// NewTableHTMLRenderer returns a new TableHTMLRenderer.
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func NewTableHTMLRenderer(opts ...TableOption) renderer.NodeRenderer {
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r := &TableHTMLRenderer{
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TableConfig: NewTableConfig(),
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}
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for _, opt := range opts {
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opt.SetTableOption(&r.TableConfig)
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}
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return r
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}
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// RegisterFuncs implements renderer.NodeRenderer.RegisterFuncs.
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func (r *TableHTMLRenderer) RegisterFuncs(reg renderer.NodeRendererFuncRegisterer) {
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reg.Register(ast.KindTable, r.renderTable)
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reg.Register(ast.KindTableHeader, r.renderTableHeader)
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reg.Register(ast.KindTableRow, r.renderTableRow)
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reg.Register(ast.KindTableCell, r.renderTableCell)
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}
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// TableAttributeFilter defines attribute names which table elements can have.
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var TableAttributeFilter = html.GlobalAttributeFilter.Extend(
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[]byte("align"), // [Deprecated]
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[]byte("bgcolor"), // [Deprecated]
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[]byte("border"), // [Deprecated]
|
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[]byte("cellpadding"), // [Deprecated]
|
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[]byte("cellspacing"), // [Deprecated]
|
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[]byte("frame"), // [Deprecated]
|
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[]byte("rules"), // [Deprecated]
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[]byte("summary"), // [Deprecated]
|
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[]byte("width"), // [Deprecated]
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)
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func (r *TableHTMLRenderer) renderTable(w util.BufWriter, source []byte, n gast.Node, entering bool) (gast.WalkStatus, error) {
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if entering {
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_, _ = w.WriteString("<table")
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if n.Attributes() != nil {
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html.RenderAttributes(w, n, TableAttributeFilter)
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}
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_, _ = w.WriteString(">\n")
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} else {
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_, _ = w.WriteString("</table>\n")
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}
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return gast.WalkContinue, nil
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}
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// TableHeaderAttributeFilter defines attribute names which <thead> elements can have.
|
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var TableHeaderAttributeFilter = html.GlobalAttributeFilter.Extend(
|
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[]byte("align"), // [Deprecated since HTML4] [Obsolete since HTML5]
|
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[]byte("bgcolor"), // [Not Standardized]
|
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[]byte("char"), // [Deprecated since HTML4] [Obsolete since HTML5]
|
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[]byte("charoff"), // [Deprecated since HTML4] [Obsolete since HTML5]
|
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[]byte("valign"), // [Deprecated since HTML4] [Obsolete since HTML5]
|
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)
|
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|
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func (r *TableHTMLRenderer) renderTableHeader(w util.BufWriter, source []byte, n gast.Node, entering bool) (gast.WalkStatus, error) {
|
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if entering {
|
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_, _ = w.WriteString("<thead")
|
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if n.Attributes() != nil {
|
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html.RenderAttributes(w, n, TableHeaderAttributeFilter)
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}
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_, _ = w.WriteString(">\n")
|
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_, _ = w.WriteString("<tr>\n") // Header <tr> has no separate handle
|
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} else {
|
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_, _ = w.WriteString("</tr>\n")
|
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_, _ = w.WriteString("</thead>\n")
|
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if n.NextSibling() != nil {
|
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_, _ = w.WriteString("<tbody>\n")
|
||||
}
|
||||
}
|
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return gast.WalkContinue, nil
|
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}
|
||||
|
||||
// TableRowAttributeFilter defines attribute names which <tr> elements can have.
|
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var TableRowAttributeFilter = html.GlobalAttributeFilter.Extend(
|
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[]byte("align"), // [Obsolete since HTML5]
|
||||
[]byte("bgcolor"), // [Obsolete since HTML5]
|
||||
[]byte("char"), // [Obsolete since HTML5]
|
||||
[]byte("charoff"), // [Obsolete since HTML5]
|
||||
[]byte("valign"), // [Obsolete since HTML5]
|
||||
)
|
||||
|
||||
func (r *TableHTMLRenderer) renderTableRow(w util.BufWriter, source []byte, n gast.Node, entering bool) (gast.WalkStatus, error) {
|
||||
if entering {
|
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_, _ = w.WriteString("<tr")
|
||||
if n.Attributes() != nil {
|
||||
html.RenderAttributes(w, n, TableRowAttributeFilter)
|
||||
}
|
||||
_, _ = w.WriteString(">\n")
|
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} else {
|
||||
_, _ = w.WriteString("</tr>\n")
|
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if n.Parent().LastChild() == n {
|
||||
_, _ = w.WriteString("</tbody>\n")
|
||||
}
|
||||
}
|
||||
return gast.WalkContinue, nil
|
||||
}
|
||||
|
||||
// TableThCellAttributeFilter defines attribute names which table <th> cells can have.
|
||||
var TableThCellAttributeFilter = html.GlobalAttributeFilter.Extend(
|
||||
[]byte("abbr"), // [OK] Contains a short abbreviated description of the cell's content [NOT OK in <td>]
|
||||
|
||||
[]byte("align"), // [Obsolete since HTML5]
|
||||
[]byte("axis"), // [Obsolete since HTML5]
|
||||
[]byte("bgcolor"), // [Not Standardized]
|
||||
[]byte("char"), // [Obsolete since HTML5]
|
||||
[]byte("charoff"), // [Obsolete since HTML5]
|
||||
|
||||
[]byte("colspan"), // [OK] Number of columns that the cell is to span
|
||||
[]byte("headers"), // [OK] This attribute contains a list of space-separated strings, each corresponding to the id attribute of the <th> elements that apply to this element
|
||||
|
||||
[]byte("height"), // [Deprecated since HTML4] [Obsolete since HTML5]
|
||||
|
||||
[]byte("rowspan"), // [OK] Number of rows that the cell is to span
|
||||
[]byte("scope"), // [OK] This enumerated attribute defines the cells that the header (defined in the <th>) element relates to [NOT OK in <td>]
|
||||
|
||||
[]byte("valign"), // [Obsolete since HTML5]
|
||||
[]byte("width"), // [Deprecated since HTML4] [Obsolete since HTML5]
|
||||
)
|
||||
|
||||
// TableTdCellAttributeFilter defines attribute names which table <td> cells can have.
|
||||
var TableTdCellAttributeFilter = html.GlobalAttributeFilter.Extend(
|
||||
[]byte("abbr"), // [Obsolete since HTML5] [OK in <th>]
|
||||
[]byte("align"), // [Obsolete since HTML5]
|
||||
[]byte("axis"), // [Obsolete since HTML5]
|
||||
[]byte("bgcolor"), // [Not Standardized]
|
||||
[]byte("char"), // [Obsolete since HTML5]
|
||||
[]byte("charoff"), // [Obsolete since HTML5]
|
||||
|
||||
[]byte("colspan"), // [OK] Number of columns that the cell is to span
|
||||
[]byte("headers"), // [OK] This attribute contains a list of space-separated strings, each corresponding to the id attribute of the <th> elements that apply to this element
|
||||
|
||||
[]byte("height"), // [Deprecated since HTML4] [Obsolete since HTML5]
|
||||
|
||||
[]byte("rowspan"), // [OK] Number of rows that the cell is to span
|
||||
|
||||
[]byte("scope"), // [Obsolete since HTML5] [OK in <th>]
|
||||
[]byte("valign"), // [Obsolete since HTML5]
|
||||
[]byte("width"), // [Deprecated since HTML4] [Obsolete since HTML5]
|
||||
)
|
||||
|
||||
func (r *TableHTMLRenderer) renderTableCell(w util.BufWriter, source []byte, node gast.Node, entering bool) (gast.WalkStatus, error) {
|
||||
n := node.(*ast.TableCell)
|
||||
tag := "td"
|
||||
if n.Parent().Kind() == ast.KindTableHeader {
|
||||
tag = "th"
|
||||
}
|
||||
if entering {
|
||||
fmt.Fprintf(w, "<%s", tag)
|
||||
if n.Alignment != ast.AlignNone {
|
||||
amethod := r.TableConfig.TableCellAlignMethod
|
||||
if amethod == TableCellAlignDefault {
|
||||
if r.Config.XHTML {
|
||||
amethod = TableCellAlignAttribute
|
||||
} else {
|
||||
amethod = TableCellAlignStyle
|
||||
}
|
||||
}
|
||||
switch amethod {
|
||||
case TableCellAlignAttribute:
|
||||
if _, ok := n.AttributeString("align"); !ok { // Skip align render if overridden
|
||||
fmt.Fprintf(w, ` align="%s"`, n.Alignment.String())
|
||||
}
|
||||
case TableCellAlignStyle:
|
||||
v, ok := n.AttributeString("style")
|
||||
var cob util.CopyOnWriteBuffer
|
||||
if ok {
|
||||
cob = util.NewCopyOnWriteBuffer(v.([]byte))
|
||||
cob.AppendByte(';')
|
||||
}
|
||||
style := fmt.Sprintf("text-align:%s", n.Alignment.String())
|
||||
cob.AppendString(style)
|
||||
n.SetAttributeString("style", cob.Bytes())
|
||||
}
|
||||
}
|
||||
if n.Attributes() != nil {
|
||||
if tag == "td" {
|
||||
html.RenderAttributes(w, n, TableTdCellAttributeFilter) // <td>
|
||||
} else {
|
||||
html.RenderAttributes(w, n, TableThCellAttributeFilter) // <th>
|
||||
}
|
||||
}
|
||||
_ = w.WriteByte('>')
|
||||
} else {
|
||||
fmt.Fprintf(w, "</%s>\n", tag)
|
||||
}
|
||||
return gast.WalkContinue, nil
|
||||
}
|
||||
|
||||
type table struct {
|
||||
options []TableOption
|
||||
}
|
||||
|
||||
// Table is an extension that allow you to use GFM tables .
|
||||
var Table = &table{
|
||||
options: []TableOption{},
|
||||
}
|
||||
|
||||
// NewTable returns a new extension with given options.
|
||||
func NewTable(opts ...TableOption) goldmark.Extender {
|
||||
return &table{
|
||||
options: opts,
|
||||
}
|
||||
}
|
||||
|
||||
func (e *table) Extend(m goldmark.Markdown) {
|
||||
m.Parser().AddOptions(
|
||||
parser.WithParagraphTransformers(
|
||||
util.Prioritized(NewTableParagraphTransformer(), 200),
|
||||
),
|
||||
parser.WithASTTransformers(
|
||||
util.Prioritized(defaultTableASTTransformer, 0),
|
||||
),
|
||||
)
|
||||
m.Renderer().AddOptions(renderer.WithNodeRenderers(
|
||||
util.Prioritized(NewTableHTMLRenderer(e.options...), 500),
|
||||
))
|
||||
}
|
||||
Loading…
Add table
Add a link
Reference in a new issue