Andreas/markdownlint
1
0
Fork 0
mirror of https://github.com/DavidAnson/markdownlint.git synced 2025-12-16 22:10:13 +01:00
Code Issues Projects Releases Packages Wiki Activity Actions 2

Refactor MD051/link-fragments slightly to reduce dependencies.

Browse source
This commit is contained in:
David Anson 2022-04-20 21:27:04 -07:00
parent bd92ec3fea
commit 8c5f28c2f0
2 changed files with 47 additions and 56 deletions
Download patch file Download diff file Expand all files Collapse all files

55
lib/md051.js
View file

@ -2,9 +2,8 @@
"use strict";
const { addError, escapeForRegExp, filterTokens, forEachLine, forEachHeading,
htmlElementRe, overlapsAnyRange } = require("../helpers");
const { codeBlockAndSpanRanges, lineMetadata } = require("./cache");
const { addError, escapeForRegExp, filterTokens, forEachInlineChild,
forEachHeading, htmlElementRe } = require("../helpers");
// Regular expression for identifying HTML anchor names
const identifierRe = /(?:id|name)\s*=\s*['"]?([^'"\s>]+)/iu;
@ -39,45 +38,41 @@ module.exports = {
"tags": [ "links" ],
"function": function MD051(params, onError) {
const fragments = new Set();
// Process headings
forEachHeading(params, (heading, content, inline) => {
fragments.add(convertHeadingToHTMLFragment(inline));
});
const exclusions = codeBlockAndSpanRanges();
forEachLine(lineMetadata(), (line, lineIndex, inCode) => {
// Process HTML anchors
const processHtmlToken = (token) => {
let match = null;
// eslint-disable-next-line no-unmodified-loop-condition
while (!inCode && ((match = htmlElementRe.exec(line)) !== null)) {
while ((match = htmlElementRe.exec(token.content)) !== null) {
const [ tag, , element ] = match;
if (
(element.toLowerCase() === "a") &&
!overlapsAnyRange(exclusions, lineIndex, match.index, match[0].length)
) {
if (element.toLowerCase() === "a") {
const idMatch = identifierRe.exec(tag);
if (idMatch) {
fragments.add(`#${idMatch[1]}`);
}
}
}
});
filterTokens(params, "inline", (token) => {
for (const child of token.children) {
const { attrs, lineNumber, line, type } = child;
if (type === "link_open") {
const href = attrs.find((attr) => attr[0] === "href");
const id = href && href[1];
if (id && (id.length > 1) && (id[0] === "#") && !fragments.has(id)) {
let context = id;
let range = null;
const match = line.match(
new RegExp(`\\[.*?\\]\\(${escapeForRegExp(context)}\\)`)
);
if (match) {
context = match[0];
range = [ match.index + 1, match[0].length ];
}
addError(onError, lineNumber, null, context, range);
}
};
filterTokens(params, "html_block", processHtmlToken);
forEachInlineChild(params, "html_inline", processHtmlToken);
// Process link fragments
forEachInlineChild(params, "link_open", (token) => {
const { attrs, lineNumber, line } = token;
const href = attrs.find((attr) => attr[0] === "href");
const id = href && href[1];
if (id && (id.length > 1) && (id[0] === "#") && !fragments.has(id)) {
let context = id;
let range = null;
const match = line.match(
new RegExp(`\\[.*?\\]\\(${escapeForRegExp(context)}\\)`)
);
if (match) {
context = match[0];
range = [ match.index + 1, match[0].length ];
}
addError(onError, lineNumber, null, context, range);
}
});
}