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Текущая директория: /opt/BitGoJS/node_modules/markdown-it/lib/rules_block
Просмотр файла: blockquote.mjs
// Block quotes
import { isSpace } from '../common/utils.mjs'
export default function blockquote (state, startLine, endLine, silent) {
let pos = state.bMarks[startLine] + state.tShift[startLine]
let max = state.eMarks[startLine]
const oldLineMax = state.lineMax
// if it's indented more than 3 spaces, it should be a code block
if (state.sCount[startLine] - state.blkIndent >= 4) { return false }
// check the block quote marker
if (state.src.charCodeAt(pos) !== 0x3E/* > */) { return false }
// we know that it's going to be a valid blockquote,
// so no point trying to find the end of it in silent mode
if (silent) { return true }
const oldBMarks = []
const oldBSCount = []
const oldSCount = []
const oldTShift = []
const terminatorRules = state.md.block.ruler.getRules('blockquote')
const oldParentType = state.parentType
state.parentType = 'blockquote'
let lastLineEmpty = false
let nextLine
// Search the end of the block
//
// Block ends with either:
// 1. an empty line outside:
// ```
// > test
//
// ```
// 2. an empty line inside:
// ```
// >
// test
// ```
// 3. another tag:
// ```
// > test
// - - -
// ```
for (nextLine = startLine; nextLine < endLine; nextLine++) {
// check if it's outdented, i.e. it's inside list item and indented
// less than said list item:
//
// ```
// 1. anything
// > current blockquote
// 2. checking this line
// ```
const isOutdented = state.sCount[nextLine] < state.blkIndent
pos = state.bMarks[nextLine] + state.tShift[nextLine]
max = state.eMarks[nextLine]
if (pos >= max) {
// Case 1: line is not inside the blockquote, and this line is empty.
break
}
if (state.src.charCodeAt(pos++) === 0x3E/* > */ && !isOutdented) {
// This line is inside the blockquote.
// set offset past spaces and ">"
let initial = state.sCount[nextLine] + 1
let spaceAfterMarker
let adjustTab
// skip one optional space after '>'
if (state.src.charCodeAt(pos) === 0x20 /* space */) {
// ' > test '
// ^ -- position start of line here:
pos++
initial++
adjustTab = false
spaceAfterMarker = true
} else if (state.src.charCodeAt(pos) === 0x09 /* tab */) {
spaceAfterMarker = true
if ((state.bsCount[nextLine] + initial) % 4 === 3) {
// ' >\t test '
// ^ -- position start of line here (tab has width===1)
pos++
initial++
adjustTab = false
} else {
// ' >\t test '
// ^ -- position start of line here + shift bsCount slightly
// to make extra space appear
adjustTab = true
}
} else {
spaceAfterMarker = false
}
let offset = initial
oldBMarks.push(state.bMarks[nextLine])
state.bMarks[nextLine] = pos
while (pos < max) {
const ch = state.src.charCodeAt(pos)
if (isSpace(ch)) {
if (ch === 0x09) {
offset += 4 - (offset + state.bsCount[nextLine] + (adjustTab ? 1 : 0)) % 4
} else {
offset++
}
} else {
break
}
pos++
}
lastLineEmpty = pos >= max
oldBSCount.push(state.bsCount[nextLine])
state.bsCount[nextLine] = state.sCount[nextLine] + 1 + (spaceAfterMarker ? 1 : 0)
oldSCount.push(state.sCount[nextLine])
state.sCount[nextLine] = offset - initial
oldTShift.push(state.tShift[nextLine])
state.tShift[nextLine] = pos - state.bMarks[nextLine]
continue
}
// Case 2: line is not inside the blockquote, and the last line was empty.
if (lastLineEmpty) { break }
// Case 3: another tag found.
let terminate = false
for (let i = 0, l = terminatorRules.length; i < l; i++) {
if (terminatorRules[i](state, nextLine, endLine, true)) {
terminate = true
break
}
}
if (terminate) {
// Quirk to enforce "hard termination mode" for paragraphs;
// normally if you call `tokenize(state, startLine, nextLine)`,
// paragraphs will look below nextLine for paragraph continuation,
// but if blockquote is terminated by another tag, they shouldn't
state.lineMax = nextLine
if (state.blkIndent !== 0) {
// state.blkIndent was non-zero, we now set it to zero,
// so we need to re-calculate all offsets to appear as
// if indent wasn't changed
oldBMarks.push(state.bMarks[nextLine])
oldBSCount.push(state.bsCount[nextLine])
oldTShift.push(state.tShift[nextLine])
oldSCount.push(state.sCount[nextLine])
state.sCount[nextLine] -= state.blkIndent
}
break
}
oldBMarks.push(state.bMarks[nextLine])
oldBSCount.push(state.bsCount[nextLine])
oldTShift.push(state.tShift[nextLine])
oldSCount.push(state.sCount[nextLine])
// A negative indentation means that this is a paragraph continuation
//
state.sCount[nextLine] = -1
}
const oldIndent = state.blkIndent
state.blkIndent = 0
const token_o = state.push('blockquote_open', 'blockquote', 1)
token_o.markup = '>'
const lines = [startLine, 0]
token_o.map = lines
state.md.block.tokenize(state, startLine, nextLine)
const token_c = state.push('blockquote_close', 'blockquote', -1)
token_c.markup = '>'
state.lineMax = oldLineMax
state.parentType = oldParentType
lines[1] = state.line
// Restore original tShift; this might not be necessary since the parser
// has already been here, but just to make sure we can do that.
for (let i = 0; i < oldTShift.length; i++) {
state.bMarks[i + startLine] = oldBMarks[i]
state.tShift[i + startLine] = oldTShift[i]
state.sCount[i + startLine] = oldSCount[i]
state.bsCount[i + startLine] = oldBSCount[i]
}
state.blkIndent = oldIndent
return true
}
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