refactor: refactor code tab split

packages/docusaurus-1.x/lib/core/Doc.js

@@ -20,16 +20,85 @@ const translateThisDoc = translate(
 );
 
 const splitTabsToTitleAndContent = content => {
- const titles = content.match(/<!--(.*?)-->/gms);
- const tabs = content.split(/<!--.*?-->/gms);
- if (!titles || !tabs || !titles.length || !tabs.length) {
- return [];
+ const lines = content.split(/\n/g);
+ let first = false;
+ let inBlock = false;
+ let whitespace = false;
+ const tc = [];
+ let current = {
+ content: [],
+ };
+ lines.forEach(line => {
+ let pos = 0;
+ const end = line.length;
+ const isToken = (cline, cpos, ...chars) => {
+ for (let i = 0; i < chars.length; i++) {
+ if (cline.charCodeAt(pos) !== chars[i]) {
+ return false;
+ }
+ pos++;
+ }
+ return true;
+ };
+ while (pos + 1 < end) {
+ for (let max = end; pos < max; pos++) {
+ if (line.charCodeAt(pos) !== 0x20 && line.charCodeAt(pos) !== 0x0a) {
+ break;
+ }
+ whitespace = true;
+ }
+ if (isToken(line, pos, 0x3c, 0x21, 0x2d, 0x2d) && !inBlock) {
+ if (current !== null && current.title !== undefined) {
+ tc.push({
+ title: current.title.trim(),
+ content: current.content.join('\n'),
+ });
+ current = {
+ content: [],
+ };
+ }
+ first = true;
+ pos += 4;
+ let b0;
+ let b1;
+ const buf = [];
+ for (let max = end; pos < max; pos++) {
+ const b = line.charCodeAt(pos);
+ if (b0 === 0x2d && b1 === 0x2d) {
+ if (b !== 0x3e) {
+ throw new Error(`Invalid comment sequence "--"`);
+ }
+ break;
+ }
+ buf.push(b);
+ b0 = b1;
+ b1 = b;
+ }
+ line = '\n';
+ current.title = String.fromCharCode(...buf).substring(
+ 0,
+ buf.length - 3,
+ );
+ }
+ if (!first) {
+ throw new Error(`Invalid code tab markdown`);
+ }
+ if (isToken(line, pos, 0x60, 0x60, 0x60) && !whitespace) {
+ pos += 3;
+ inBlock = !inBlock;
+ }
+ pos++;
+ whitespace = false;
+ }
+ current.content.push(line);
+ });
+ if (current !== null && current.title !== undefined) {
+ tc.push({
+ title: current.title.trim(),
+ content: current.content.join('\n'),
+ });
  }
- tabs.shift();
- return titles.map((title, idx) => ({
- title: title.substring(4, title.length - 3).trim(),
- content: tabs[idx],
- }));
+ return tc;
 };
 
 const cleanTheCodeTag = content => {