Work in progress
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parent
7b620031e8
commit
7890987d99
79
vimdoc.go
79
vimdoc.go
@ -34,6 +34,7 @@ import (
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const (
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DEFAULT_NUM_COLUMNS = 80
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DEFAULT_TAB_SIZE = 4
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)
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type list struct {
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@ -50,12 +51,14 @@ type vimDoc struct {
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rootHead *header
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lastHead *header
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title string
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cols int
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tabs int
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tocPos int
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lists []*list
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}
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func VimDocRenderer() blackfriday.Renderer {
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return &vimDoc{title: "test", tocPos: -1}
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func VimDocRenderer(cols, tabs int) blackfriday.Renderer {
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return &vimDoc{title: "test", cols: cols, tabs: tabs, tocPos: -1}
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}
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func (v *vimDoc) pushl() {
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@ -64,7 +67,7 @@ func (v *vimDoc) pushl() {
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func (v *vimDoc) popl() {
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if len(v.lists) == 0 {
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log.Fatal("invalid list operation")
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log.Fatal("error: invalid list operation")
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}
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v.lists = v.lists[:len(v.lists)-1]
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@ -72,7 +75,7 @@ func (v *vimDoc) popl() {
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func (v *vimDoc) getl() *list {
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if len(v.lists) == 0 {
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log.Fatal("invalid list operation")
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log.Fatal("error: invalid list operation")
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}
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return v.lists[len(v.lists)-1]
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@ -88,20 +91,30 @@ func (v *vimDoc) fixupHeader(header []byte) []byte {
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}
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func (v *vimDoc) buildTag(header []byte) []byte {
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return []byte(fmt.Sprintf("%s-%s", v.title, string(bytes.ToLower(header))))
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return []byte(fmt.Sprintf("%s-%s", v.title, bytes.ToLower(header)))
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}
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func (*vimDoc) writeRule(out *bytes.Buffer, repeat string) {
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out.WriteString(strings.Repeat(repeat, DEFAULT_NUM_COLUMNS))
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func (v *vimDoc) writeStraddle(out *bytes.Buffer, left, right []byte, trim int) {
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padding := v.cols - (len(left) + len(right)) + trim
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out.Write(left)
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if padding > 0 {
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out.WriteString(strings.Repeat(" ", padding))
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}
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out.Write(right)
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out.WriteString("\n")
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}
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func (v *vimDoc) writeRule(out *bytes.Buffer, repeat string) {
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out.WriteString(strings.Repeat(repeat, v.cols))
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out.WriteString("\n")
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}
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func (v *vimDoc) writeToc(out *bytes.Buffer, h *header, depth int) {
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out.WriteString(fmt.Sprintf(
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"%s%s: |%s|\n",
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strings.Repeat(" ", depth*blackfriday.TAB_SIZE_DEFAULT),
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string(h.text),
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v.buildTag(h.text)))
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title := fmt.Sprintf("%s%s:", strings.Repeat(" ", depth*v.tabs), h.text)
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link := fmt.Sprintf("|%s|", v.buildTag(h.text))
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v.writeStraddle(out, []byte(title), []byte(link), 2)
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for _, c := range h.children {
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v.writeToc(out, c, depth+1)
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}
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@ -111,18 +124,16 @@ func (v *vimDoc) format(out *bytes.Buffer, text string, trim int) {
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lines := strings.Split(text, "\n")
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for index, line := range lines {
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width := blackfriday.TAB_SIZE_DEFAULT
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width := v.tabs
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if width >= trim && index == 0 {
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width -= trim
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}
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if len(line) == 0 {
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continue
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if len(line) > 0 {
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out.WriteString(strings.Repeat(" ", width))
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out.WriteString(line)
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out.WriteString("\n")
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}
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out.WriteString(strings.Repeat(" ", width))
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out.WriteString(line)
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out.WriteString("\n")
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}
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}
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@ -190,7 +201,9 @@ func (v *vimDoc) Header(out *bytes.Buffer, text func() bool, level int, id strin
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}
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out.Truncate(headerPos)
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out.WriteString(fmt.Sprintf("%s\t\t*%s*\n\n", v.fixupHeader(header.text), v.buildTag(header.text)))
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tag := fmt.Sprintf("*%s*", v.buildTag(header.text))
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v.writeStraddle(out, v.fixupHeader(header.text), []byte(tag), 2)
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out.WriteString("\n")
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}
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func (v *vimDoc) HRule(out *bytes.Buffer) {
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@ -216,53 +229,55 @@ func (v *vimDoc) ListItem(out *bytes.Buffer, text []byte, flags int) {
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v.format(out, string(text), out.Len()-marker)
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if flags&blackfriday.LIST_ITEM_END_OF_LIST == blackfriday.LIST_ITEM_END_OF_LIST {
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if flags&blackfriday.LIST_ITEM_END_OF_LIST != 0 {
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out.WriteString("\n")
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}
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}
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func (*vimDoc) Paragraph(out *bytes.Buffer, text func() bool) {
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marker := out.Len()
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if !text() {
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out.Truncate(marker)
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return
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}
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out.WriteString("\n\n")
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}
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func (*vimDoc) Table(out *bytes.Buffer, header []byte, body []byte, columnData []int) {
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// unimplemented
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log.Println("Table is a stub")
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log.Println("warning: Table is a stub")
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}
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func (*vimDoc) TableRow(out *bytes.Buffer, text []byte) {
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// unimplemented
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log.Println("TableRow is a stub")
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log.Println("warning: TableRow is a stub")
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}
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func (*vimDoc) TableHeaderCell(out *bytes.Buffer, text []byte, flags int) {
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// unimplemented
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log.Println("TableHeaderCell is a stub")
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log.Println("warning: TableHeaderCell is a stub")
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}
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func (*vimDoc) TableCell(out *bytes.Buffer, text []byte, flags int) {
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// unimplemented
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log.Println("TableCell is a stub")
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log.Println("warning: TableCell is a stub")
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}
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func (*vimDoc) Footnotes(out *bytes.Buffer, text func() bool) {
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// unimplemented
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log.Println("Footnotes is a stub")
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log.Println("warning: Footnotes is a stub")
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}
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func (*vimDoc) FootnoteItem(out *bytes.Buffer, name, text []byte, flags int) {
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// unimplemented
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log.Println("FootnoteItem is a stub")
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log.Println("warning: FootnoteItem is a stub")
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}
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func (*vimDoc) TitleBlock(out *bytes.Buffer, text []byte) {
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// unimplemented
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log.Println("TitleBlock is a stub")
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log.Println("warning: TitleBlock is a stub")
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}
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// Span-level callbacks
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@ -273,7 +288,7 @@ func (*vimDoc) AutoLink(out *bytes.Buffer, link []byte, kind int) {
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func (*vimDoc) CodeSpan(out *bytes.Buffer, text []byte) {
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r := regexp.MustCompile(`\s`)
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// vim does not properly highlight spaces in code spans
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// vim does not correctly highlight space-delimited words in code spans
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if !r.Match(text) {
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out.WriteString("`")
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out.Write(text)
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@ -303,7 +318,7 @@ func (*vimDoc) Link(out *bytes.Buffer, link []byte, title []byte, content []byte
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func (*vimDoc) RawHtmlTag(out *bytes.Buffer, tag []byte) {
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// unimplemented
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log.Println("StrikeThrough is a stub")
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log.Println("warning: StrikeThrough is a stub")
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}
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func (*vimDoc) TripleEmphasis(out *bytes.Buffer, text []byte) {
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@ -312,12 +327,12 @@ func (*vimDoc) TripleEmphasis(out *bytes.Buffer, text []byte) {
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func (*vimDoc) StrikeThrough(out *bytes.Buffer, text []byte) {
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// unimplemented
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log.Println("StrikeThrough is a stub")
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log.Println("warning: StrikeThrough is a stub")
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}
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func (*vimDoc) FootnoteRef(out *bytes.Buffer, ref []byte, id int) {
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// unimplemented
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log.Println("FootnoteRef is a stub")
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log.Println("warning: FootnoteRef is a stub")
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}
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// Low-level callbacks
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@ -40,6 +40,8 @@ func usage() {
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}
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func main() {
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cols := flag.Int("cols", 80, "number of columns to use for alignment and rules")
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tabs := flag.Int("tabs", 4, "size of the tab to use specified as number of spaces")
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flag.Usage = usage
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flag.Parse()
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@ -61,7 +63,7 @@ func main() {
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os.Exit(-1)
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}
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renderer := VimDocRenderer()
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renderer := VimDocRenderer(*cols, *tabs)
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extensions := blackfriday.EXTENSION_FENCED_CODE | blackfriday.EXTENSION_NO_INTRA_EMPHASIS | blackfriday.EXTENSION_SPACE_HEADERS
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output := blackfriday.Markdown(input, renderer, extensions)
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