42dc70e7ad
list items only contain content that is indented to their respective level. Except when that content is inside a block. To allow for this we have to ignore the parentStop when parsing a block and just include everything until the end of that block. Can't think of any problems with this right now. Let's see if this comes back to bite me.
61 lines
1.7 KiB
Go
61 lines
1.7 KiB
Go
package org
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import (
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"regexp"
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"strings"
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"unicode"
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)
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type Block struct {
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Name string
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Parameters []string
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Children []Node
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}
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var beginBlockRegexp = regexp.MustCompile(`(?i)^(\s*)#\+BEGIN_(\w+)(.*)`)
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var endBlockRegexp = regexp.MustCompile(`(?i)^(\s*)#\+END_(\w+)`)
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func lexBlock(line string) (token, bool) {
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if m := beginBlockRegexp.FindStringSubmatch(line); m != nil {
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return token{"beginBlock", len(m[1]), strings.ToUpper(m[2]), m}, true
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} else if m := endBlockRegexp.FindStringSubmatch(line); m != nil {
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return token{"endBlock", len(m[1]), strings.ToUpper(m[2]), m}, true
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}
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return nilToken, false
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}
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func isRawTextBlock(name string) bool { return name == "SRC" || name == "EXAMPLE" || name == "EXPORT" }
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func (d *Document) parseBlock(i int, parentStop stopFn) (int, Node) {
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t, start := d.tokens[i], i
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name, parameters := t.content, strings.Fields(t.matches[3])
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trim := trimIndentUpTo(d.tokens[i].lvl)
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stop := func(d *Document, i int) bool {
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return i >= len(d.tokens) || (d.tokens[i].kind == "endBlock" && d.tokens[i].content == name)
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}
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block, i := Block{name, parameters, nil}, i+1
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if isRawTextBlock(name) {
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rawText := ""
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for ; !stop(d, i); i++ {
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rawText += trim(d.tokens[i].matches[0]) + "\n"
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}
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block.Children = d.parseRawInline(rawText)
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} else {
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consumed, nodes := d.parseMany(i, stop)
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block.Children = nodes
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i += consumed
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}
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if i < len(d.tokens) && d.tokens[i].kind == "endBlock" && d.tokens[i].content == name {
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return i + 1 - start, block
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}
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return 0, nil
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}
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func trimIndentUpTo(max int) func(string) string {
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return func(line string) string {
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i := 0
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for ; i < len(line) && i < max && unicode.IsSpace(rune(line[i])); i++ {
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}
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return line[i:]
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}
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}
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