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Original file line number | Diff line number | Diff line change |
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package ast | ||
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import ( | ||
"bytes" | ||
"regexp" | ||
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astv1 "github.com/blackstork-io/fabric/plugin/ast/v1" | ||
) | ||
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// inlines | ||
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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, | ||
}, | ||
}, | ||
}}, | ||
}, | ||
}, | ||
} | ||
} | ||
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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), | ||
}, | ||
}, | ||
} | ||
} | ||
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func Link(text ...astv1.InlineContent) *astv1.LinkOrImage { | ||
return &astv1.LinkOrImage{ | ||
Base: &astv1.BaseNode{ | ||
Children: astv1.Inlines.ExtendNodes(text, nil), | ||
}, | ||
IsImage: false, | ||
} | ||
} | ||
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func Image(alt ...astv1.InlineContent) *astv1.LinkOrImage { | ||
return &astv1.LinkOrImage{ | ||
Base: &astv1.BaseNode{ | ||
Children: astv1.Inlines.ExtendNodes(alt, nil), | ||
}, | ||
IsImage: true, | ||
} | ||
} | ||
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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, | ||
}, | ||
} | ||
} | ||
} | ||
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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), | ||
}, | ||
} | ||
} | ||
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func InlineHTML(html string) *astv1.Node_RawHtml { | ||
return &astv1.Node_RawHtml{ | ||
RawHtml: &astv1.RawHTML{ | ||
Base: &astv1.BaseNode{}, | ||
Segments: [][]byte{[]byte(html)}, | ||
}, | ||
} | ||
} | ||
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func LineBreak() *astv1.Node_Text { | ||
return &astv1.Node_Text{ | ||
Text: &astv1.Text{ | ||
Base: &astv1.BaseNode{}, | ||
Segment: nil, | ||
HardLineBreak: true, | ||
}, | ||
} | ||
} | ||
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var textHardBreakRegexp = regexp.MustCompile(`( {2,}\n *|\\\n *)`) | ||
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func splitBytes(re *regexp.Regexp, s []byte, n int) [][]byte { | ||
if n == 0 { | ||
return nil | ||
} | ||
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if len(s) == 0 { | ||
return [][]byte{nil} | ||
} | ||
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matches := re.FindAllIndex(s, n) | ||
subBytes := make([][]byte, 0, len(matches)) | ||
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beg := 0 | ||
end := 0 | ||
for _, match := range matches { | ||
if n > 0 && len(subBytes) >= n-1 { | ||
break | ||
} | ||
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end = match[0] | ||
if match[1] != 0 { | ||
subBytes = append(subBytes, s[beg:end]) | ||
} | ||
beg = match[1] | ||
} | ||
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if end != len(s) { | ||
subBytes = append(subBytes, s[beg:]) | ||
} | ||
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return subBytes | ||
} | ||
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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 | ||
} | ||
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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 | ||
} | ||
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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 | ||
} | ||
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// 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), | ||
}, | ||
}, | ||
} | ||
} | ||
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type listMarker uint32 | ||
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const ( | ||
Period listMarker = '.' | ||
Paren listMarker = ')' | ||
Star listMarker = '*' | ||
Plus listMarker = '+' | ||
Hyphen listMarker = '-' | ||
) | ||
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func List(marker listMarker) *astv1.Node_List { | ||
return &astv1.Node_List{ | ||
List: &astv1.List{ | ||
Base: &astv1.BaseNode{}, | ||
Marker: uint32(marker), | ||
}, | ||
} | ||
} | ||
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func ThematicBreak() *astv1.Node_ThematicBreak { | ||
return &astv1.Node_ThematicBreak{ | ||
ThematicBreak: &astv1.ThematicBreak{ | ||
Base: &astv1.BaseNode{}, | ||
}, | ||
} | ||
} | ||
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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)), | ||
}, | ||
} | ||
} | ||
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func IndentedCodeBlock(code []byte) *astv1.Node_CodeBlock { | ||
return &astv1.Node_CodeBlock{ | ||
CodeBlock: &astv1.CodeBlock{ | ||
Base: &astv1.BaseNode{}, | ||
Lines: bytes.Split(code, []byte("\n")), | ||
}, | ||
} | ||
} | ||
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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")), | ||
}, | ||
} | ||
} | ||
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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")), | ||
}, | ||
} | ||
} | ||
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func Paragraph(children ...astv1.InlineContent) *astv1.Node_Paragraph { | ||
return &astv1.Node_Paragraph{ | ||
Paragraph: &astv1.Paragraph{ | ||
Base: &astv1.BaseNode{ | ||
Children: astv1.Inlines.ExtendNodes(children, nil), | ||
}, | ||
}, | ||
} | ||
} | ||
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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 | ||
) | ||
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func Table() *astv1.Node_Table { | ||
return &astv1.Node_Table{ | ||
Table: &astv1.Table{ | ||
Base: &astv1.BaseNode{}, | ||
}, | ||
} | ||
} |
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