From d607ac12097afb5cb6f398a4e7b5cf4316efedc6 Mon Sep 17 00:00:00 2001 From: altaf-creator Date: Sun, 12 May 2024 12:14:02 +0700 Subject: self host --- .../markdown-it-14.1.0/lib/rules_block/table.mjs | 228 +++++++++++++++++++++ 1 file changed, 228 insertions(+) create mode 100644 packages/markdown-it-14.1.0/lib/rules_block/table.mjs (limited to 'packages/markdown-it-14.1.0/lib/rules_block/table.mjs') diff --git a/packages/markdown-it-14.1.0/lib/rules_block/table.mjs b/packages/markdown-it-14.1.0/lib/rules_block/table.mjs new file mode 100644 index 0000000..be0ba0a --- /dev/null +++ b/packages/markdown-it-14.1.0/lib/rules_block/table.mjs @@ -0,0 +1,228 @@ +// GFM table, https://github.github.com/gfm/#tables-extension- + +import { isSpace } from '../common/utils.mjs' + +// Limit the amount of empty autocompleted cells in a table, +// see https://github.com/markdown-it/markdown-it/issues/1000, +// +// Both pulldown-cmark and commonmark-hs limit the number of cells this way to ~200k. +// We set it to 65k, which can expand user input by a factor of x370 +// (256x256 square is 1.8kB expanded into 650kB). +const MAX_AUTOCOMPLETED_CELLS = 0x10000 + +function getLine (state, line) { + const pos = state.bMarks[line] + state.tShift[line] + const max = state.eMarks[line] + + return state.src.slice(pos, max) +} + +function escapedSplit (str) { + const result = [] + const max = str.length + + let pos = 0 + let ch = str.charCodeAt(pos) + let isEscaped = false + let lastPos = 0 + let current = '' + + while (pos < max) { + if (ch === 0x7c/* | */) { + if (!isEscaped) { + // pipe separating cells, '|' + result.push(current + str.substring(lastPos, pos)) + current = '' + lastPos = pos + 1 + } else { + // escaped pipe, '\|' + current += str.substring(lastPos, pos - 1) + lastPos = pos + } + } + + isEscaped = (ch === 0x5c/* \ */) + pos++ + + ch = str.charCodeAt(pos) + } + + result.push(current + str.substring(lastPos)) + + return result +} + +export default function table (state, startLine, endLine, silent) { + // should have at least two lines + if (startLine + 2 > endLine) { return false } + + let nextLine = startLine + 1 + + if (state.sCount[nextLine] < state.blkIndent) { return false } + + // if it's indented more than 3 spaces, it should be a code block + if (state.sCount[nextLine] - state.blkIndent >= 4) { return false } + + // first character of the second line should be '|', '-', ':', + // and no other characters are allowed but spaces; + // basically, this is the equivalent of /^[-:|][-:|\s]*$/ regexp + + let pos = state.bMarks[nextLine] + state.tShift[nextLine] + if (pos >= state.eMarks[nextLine]) { return false } + + const firstCh = state.src.charCodeAt(pos++) + if (firstCh !== 0x7C/* | */ && firstCh !== 0x2D/* - */ && firstCh !== 0x3A/* : */) { return false } + + if (pos >= state.eMarks[nextLine]) { return false } + + const secondCh = state.src.charCodeAt(pos++) + if (secondCh !== 0x7C/* | */ && secondCh !== 0x2D/* - */ && secondCh !== 0x3A/* : */ && !isSpace(secondCh)) { + return false + } + + // if first character is '-', then second character must not be a space + // (due to parsing ambiguity with list) + if (firstCh === 0x2D/* - */ && isSpace(secondCh)) { return false } + + while (pos < state.eMarks[nextLine]) { + const ch = state.src.charCodeAt(pos) + + if (ch !== 0x7C/* | */ && ch !== 0x2D/* - */ && ch !== 0x3A/* : */ && !isSpace(ch)) { return false } + + pos++ + } + + let lineText = getLine(state, startLine + 1) + let columns = lineText.split('|') + const aligns = [] + for (let i = 0; i < columns.length; i++) { + const t = columns[i].trim() + if (!t) { + // allow empty columns before and after table, but not in between columns; + // e.g. allow ` |---| `, disallow ` ---||--- ` + if (i === 0 || i === columns.length - 1) { + continue + } else { + return false + } + } + + if (!/^:?-+:?$/.test(t)) { return false } + if (t.charCodeAt(t.length - 1) === 0x3A/* : */) { + aligns.push(t.charCodeAt(0) === 0x3A/* : */ ? 'center' : 'right') + } else if (t.charCodeAt(0) === 0x3A/* : */) { + aligns.push('left') + } else { + aligns.push('') + } + } + + lineText = getLine(state, startLine).trim() + if (lineText.indexOf('|') === -1) { return false } + if (state.sCount[startLine] - state.blkIndent >= 4) { return false } + columns = escapedSplit(lineText) + if (columns.length && columns[0] === '') columns.shift() + if (columns.length && columns[columns.length - 1] === '') columns.pop() + + // header row will define an amount of columns in the entire table, + // and align row should be exactly the same (the rest of the rows can differ) + const columnCount = columns.length + if (columnCount === 0 || columnCount !== aligns.length) { return false } + + if (silent) { return true } + + const oldParentType = state.parentType + state.parentType = 'table' + + // use 'blockquote' lists for termination because it's + // the most similar to tables + const terminatorRules = state.md.block.ruler.getRules('blockquote') + + const token_to = state.push('table_open', 'table', 1) + const tableLines = [startLine, 0] + token_to.map = tableLines + + const token_tho = state.push('thead_open', 'thead', 1) + token_tho.map = [startLine, startLine + 1] + + const token_htro = state.push('tr_open', 'tr', 1) + token_htro.map = [startLine, startLine + 1] + + for (let i = 0; i < columns.length; i++) { + const token_ho = state.push('th_open', 'th', 1) + if (aligns[i]) { + token_ho.attrs = [['style', 'text-align:' + aligns[i]]] + } + + const token_il = state.push('inline', '', 0) + token_il.content = columns[i].trim() + token_il.children = [] + + state.push('th_close', 'th', -1) + } + + state.push('tr_close', 'tr', -1) + state.push('thead_close', 'thead', -1) + + let tbodyLines + let autocompletedCells = 0 + + for (nextLine = startLine + 2; nextLine < endLine; nextLine++) { + if (state.sCount[nextLine] < state.blkIndent) { break } + + 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) { break } + lineText = getLine(state, nextLine).trim() + if (!lineText) { break } + if (state.sCount[nextLine] - state.blkIndent >= 4) { break } + columns = escapedSplit(lineText) + if (columns.length && columns[0] === '') columns.shift() + if (columns.length && columns[columns.length - 1] === '') columns.pop() + + // note: autocomplete count can be negative if user specifies more columns than header, + // but that does not affect intended use (which is limiting expansion) + autocompletedCells += columnCount - columns.length + if (autocompletedCells > MAX_AUTOCOMPLETED_CELLS) { break } + + if (nextLine === startLine + 2) { + const token_tbo = state.push('tbody_open', 'tbody', 1) + token_tbo.map = tbodyLines = [startLine + 2, 0] + } + + const token_tro = state.push('tr_open', 'tr', 1) + token_tro.map = [nextLine, nextLine + 1] + + for (let i = 0; i < columnCount; i++) { + const token_tdo = state.push('td_open', 'td', 1) + if (aligns[i]) { + token_tdo.attrs = [['style', 'text-align:' + aligns[i]]] + } + + const token_il = state.push('inline', '', 0) + token_il.content = columns[i] ? columns[i].trim() : '' + token_il.children = [] + + state.push('td_close', 'td', -1) + } + state.push('tr_close', 'tr', -1) + } + + if (tbodyLines) { + state.push('tbody_close', 'tbody', -1) + tbodyLines[1] = nextLine + } + + state.push('table_close', 'table', -1) + tableLines[1] = nextLine + + state.parentType = oldParentType + state.line = nextLine + return true +} -- cgit v1.2.3