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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,306 @@ | ||
| package ast | ||
|
|
||
| import ( | ||
| "bytes" | ||
| "regexp" | ||
|
|
||
| astv1 "github.com/blackstork-io/fabric/plugin/ast/v1" | ||
| ) | ||
|
|
||
| // inlines | ||
|
|
||
| func CodeSpan(code []byte) *astv1.Node_CodeSpan { | ||
| return &astv1.Node_CodeSpan{ | ||
| CodeSpan: &astv1.CodeSpan{ | ||
| Base: &astv1.BaseNode{ | ||
| Children: []*astv1.Node{{ | ||
| Kind: &astv1.Node_Text{ | ||
| Text: &astv1.Text{ | ||
| Base: &astv1.BaseNode{}, | ||
| Segment: code, | ||
| Raw: true, | ||
| }, | ||
| }, | ||
| }}, | ||
| }, | ||
| }, | ||
| } | ||
| } | ||
|
|
||
| func emphasis(level int64, children []astv1.InlineContent) *astv1.Node_Emphasis { | ||
| return &astv1.Node_Emphasis{ | ||
| Emphasis: &astv1.Emphasis{ | ||
| Base: &astv1.BaseNode{ | ||
| Children: astv1.Inlines.ExtendNodes(children, nil), | ||
| }, | ||
| Level: level, | ||
| }, | ||
| } | ||
| } | ||
|
|
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| func Emphasis(children ...astv1.InlineContent) *astv1.Node_Emphasis { | ||
| return emphasis(1, children) | ||
| } | ||
|
|
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| var Italic = Emphasis | ||
|
|
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| func StrongEmphasis(children ...astv1.InlineContent) *astv1.Node_Emphasis { | ||
| return emphasis(2, children) | ||
| } | ||
|
|
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| var Bold = StrongEmphasis | ||
|
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| func Strikethrough(children ...astv1.InlineContent) *astv1.Node_Strikethrough { | ||
| return &astv1.Node_Strikethrough{ | ||
| Strikethrough: &astv1.Strikethrough{ | ||
| Base: &astv1.BaseNode{ | ||
| Children: astv1.Inlines.ExtendNodes(children, nil), | ||
| }, | ||
| }, | ||
| } | ||
| } | ||
|
|
||
| func Link(text ...astv1.InlineContent) *astv1.LinkOrImage { | ||
| return &astv1.LinkOrImage{ | ||
| Base: &astv1.BaseNode{ | ||
| Children: astv1.Inlines.ExtendNodes(text, nil), | ||
| }, | ||
| IsImage: false, | ||
| } | ||
| } | ||
|
|
||
| func Image(alt ...astv1.InlineContent) *astv1.LinkOrImage { | ||
| return &astv1.LinkOrImage{ | ||
| Base: &astv1.BaseNode{ | ||
| Children: astv1.Inlines.ExtendNodes(alt, nil), | ||
| }, | ||
| IsImage: true, | ||
| } | ||
| } | ||
|
|
||
| func AutoLink(url string) *astv1.Node_AutoLink { | ||
| before, after, found := bytes.Cut([]byte(url), []byte("://")) | ||
| if found { | ||
| return &astv1.Node_AutoLink{ | ||
| AutoLink: &astv1.AutoLink{ | ||
| Base: &astv1.BaseNode{}, | ||
| Type: astv1.AutoLinkType_AUTO_LINK_TYPE_URL, | ||
| Protocol: before, | ||
| Value: after, | ||
| }, | ||
| } | ||
| } else { | ||
| return &astv1.Node_AutoLink{ | ||
| AutoLink: &astv1.AutoLink{ | ||
| Base: &astv1.BaseNode{}, | ||
| Type: astv1.AutoLinkType_AUTO_LINK_TYPE_EMAIL, | ||
| Value: before, | ||
| }, | ||
| } | ||
| } | ||
| } | ||
|
|
||
| func AutoLinkEmail(email string) *astv1.Node_AutoLink { | ||
| return &astv1.Node_AutoLink{ | ||
| AutoLink: &astv1.AutoLink{ | ||
| Base: &astv1.BaseNode{}, | ||
| Type: astv1.AutoLinkType_AUTO_LINK_TYPE_EMAIL, | ||
| Value: []byte(email), | ||
| }, | ||
| } | ||
| } | ||
|
|
||
| func InlineHTML(html string) *astv1.Node_RawHtml { | ||
| return &astv1.Node_RawHtml{ | ||
| RawHtml: &astv1.RawHTML{ | ||
| Base: &astv1.BaseNode{}, | ||
| Segments: [][]byte{[]byte(html)}, | ||
| }, | ||
| } | ||
| } | ||
|
|
||
| func LineBreak() *astv1.Node_Text { | ||
| return &astv1.Node_Text{ | ||
| Text: &astv1.Text{ | ||
| Base: &astv1.BaseNode{}, | ||
| Segment: nil, | ||
| HardLineBreak: true, | ||
| }, | ||
| } | ||
| } | ||
|
|
||
| var textHardBreakRegexp = regexp.MustCompile(`( {2,}\n *|\\\n *)`) | ||
|
|
||
| func splitBytes(re *regexp.Regexp, s []byte, n int) [][]byte { | ||
| if n == 0 { | ||
| return nil | ||
| } | ||
|
|
||
| if len(s) == 0 { | ||
| return [][]byte{nil} | ||
| } | ||
|
|
||
| matches := re.FindAllIndex(s, n) | ||
| subBytes := make([][]byte, 0, len(matches)) | ||
|
|
||
| beg := 0 | ||
| end := 0 | ||
| for _, match := range matches { | ||
| if n > 0 && len(subBytes) >= n-1 { | ||
| break | ||
| } | ||
|
|
||
| end = match[0] | ||
| if match[1] != 0 { | ||
| subBytes = append(subBytes, s[beg:end]) | ||
| } | ||
| beg = match[1] | ||
| } | ||
|
|
||
| if end != len(s) { | ||
| subBytes = append(subBytes, s[beg:]) | ||
| } | ||
|
|
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| return subBytes | ||
| } | ||
|
|
||
| func convertSoftBreaks(txt []byte) (res []*astv1.Text) { | ||
| split := bytes.Split(txt, []byte("\n")) | ||
| res = make([]*astv1.Text, 0, len(split)) | ||
| res = append(res, &astv1.Text{ | ||
| Segment: split[0], | ||
| }) | ||
| for i, s := range split[1:] { | ||
| res[i].SoftLineBreak = true | ||
| res = append(res, &astv1.Text{ | ||
| Segment: s, | ||
| }) | ||
| } | ||
| return | ||
| } | ||
|
|
||
| func convertHardBreaks(txt []byte) (res []*astv1.Text) { | ||
| split := splitBytes(textHardBreakRegexp, txt, -1) | ||
| res = make([]*astv1.Text, 0, len(split)) | ||
| res = append(res, convertSoftBreaks(split[0])...) | ||
| for i, s := range split[1:] { | ||
| res[i].HardLineBreak = true | ||
| res = append(res, convertSoftBreaks(s)...) | ||
| } | ||
| return | ||
| } | ||
|
|
||
| func Text(text string) (res astv1.Inlines) { | ||
| txt := convertHardBreaks([]byte(text)) | ||
| res = make(astv1.Inlines, len(txt)) | ||
| for i, t := range txt { | ||
| res[i] = &astv1.Node_Text{ | ||
| Text: t, | ||
| } | ||
| } | ||
| return | ||
| } | ||
|
|
||
| // container blocks | ||
| func Blockquote(children ...astv1.BlockContent) *astv1.Node_Blockquote { | ||
| return &astv1.Node_Blockquote{ | ||
| Blockquote: &astv1.Blockquote{ | ||
| Base: &astv1.BaseNode{ | ||
| Children: astv1.Blocks.ExtendNodes(children, nil), | ||
| }, | ||
| }, | ||
| } | ||
| } | ||
|
|
||
| type listMarker uint32 | ||
|
|
||
| const ( | ||
| Period listMarker = '.' | ||
| Paren listMarker = ')' | ||
| Star listMarker = '*' | ||
| Plus listMarker = '+' | ||
| Hyphen listMarker = '-' | ||
| ) | ||
|
|
||
| func List(marker listMarker) *astv1.Node_List { | ||
| return &astv1.Node_List{ | ||
| List: &astv1.List{ | ||
| Base: &astv1.BaseNode{}, | ||
| Marker: uint32(marker), | ||
| }, | ||
| } | ||
| } | ||
|
|
||
| func ThematicBreak() *astv1.Node_ThematicBreak { | ||
| return &astv1.Node_ThematicBreak{ | ||
| ThematicBreak: &astv1.ThematicBreak{ | ||
| Base: &astv1.BaseNode{}, | ||
| }, | ||
| } | ||
| } | ||
|
|
||
| func Header(level uint32, children ...astv1.InlineContent) *astv1.Node_Heading { | ||
| return &astv1.Node_Heading{ | ||
| Heading: &astv1.Heading{ | ||
| Base: &astv1.BaseNode{ | ||
| Children: astv1.Inlines.ExtendNodes(children, nil), | ||
| }, | ||
| Level: max(1, min(level, 6)), | ||
| }, | ||
| } | ||
| } | ||
|
|
||
| func IndentedCodeBlock(code []byte) *astv1.Node_CodeBlock { | ||
| return &astv1.Node_CodeBlock{ | ||
| CodeBlock: &astv1.CodeBlock{ | ||
| Base: &astv1.BaseNode{}, | ||
| Lines: bytes.Split(code, []byte("\n")), | ||
| }, | ||
| } | ||
| } | ||
|
|
||
| func FencedCodeBlock(code []byte) *astv1.Node_FencedCodeBlock { | ||
| return &astv1.Node_FencedCodeBlock{ | ||
| FencedCodeBlock: &astv1.FencedCodeBlock{ | ||
| Base: &astv1.BaseNode{}, | ||
| Info: nil, | ||
| Lines: bytes.Split(code, []byte("\n")), | ||
| }, | ||
| } | ||
| } | ||
|
|
||
| func HTMLBlock(html []byte) *astv1.Node_HtmlBlock { | ||
| return &astv1.Node_HtmlBlock{ | ||
| HtmlBlock: &astv1.HTMLBlock{ | ||
| Base: &astv1.BaseNode{}, | ||
| // setting the value to most general type, hopefully renderers don't care | ||
| Type: astv1.HTMLBlockType_HTML_BLOCK_TYPE_7, | ||
| Lines: bytes.Split(html, []byte("\n")), | ||
| }, | ||
| } | ||
| } | ||
|
|
||
| func Paragraph(children ...astv1.InlineContent) *astv1.Node_Paragraph { | ||
| return &astv1.Node_Paragraph{ | ||
| Paragraph: &astv1.Paragraph{ | ||
| Base: &astv1.BaseNode{ | ||
| Children: astv1.Inlines.ExtendNodes(children, nil), | ||
| }, | ||
| }, | ||
| } | ||
| } | ||
|
|
||
| var ( | ||
| AlignLeft = astv1.CellAlignment_CELL_ALIGNMENT_LEFT | ||
| AlignRight = astv1.CellAlignment_CELL_ALIGNMENT_RIGHT | ||
| AlignCenter = astv1.CellAlignment_CELL_ALIGNMENT_CENTER | ||
| AlignNone = astv1.CellAlignment_CELL_ALIGNMENT_NONE | ||
| ) | ||
|
|
||
| func Table() *astv1.Node_Table { | ||
| return &astv1.Node_Table{ | ||
| Table: &astv1.Table{ | ||
| Base: &astv1.BaseNode{}, | ||
| }, | ||
| } | ||
| } |
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