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contentcollector: Simplify child node access

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Richard Hansen 2021-01-25 01:29:08 -05:00 committed by John McLear
parent 1cb5453aeb
commit 275f041fbb
1 changed files with 8 additions and 26 deletions
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34
src/static/js/contentcollector.js
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@ -48,24 +48,9 @@ const makeContentCollector = (collectStyles, abrowser, apool, className2Author)
tagName: (n) => n.tagName && n.tagName.toLowerCase(),
// .nodeValue works with DOM and cheerio 0.22.0.
nodeValue: (n) => n.nodeValue,
// Returns the number of Node children (n.childNodes.length), not the number of Element children
// (n.children.length in DOM).
numChildNodes: (n) => {
// .childNodes.length works with DOM and cheerio 0.22.0, except in cheerio the .childNodes
// property does not exist on text nodes (and maybe other non-element nodes).
if (n.childNodes == null) return 0;
return n.childNodes.length;
},
// Returns the i'th Node child (n.childNodes[i]), not the i'th Element child (n.children[i] in
// DOM).
childNode: (n, i) => {
if (n.childNodes.item == null) {
// .childNodes[] works with DOM and cheerio 0.22.0.
return n.childNodes[i];
}
// .childNodes.item() works with DOM but not with cheerio 0.22.0.
return n.childNodes.item(i);
},
// .childNodes works with DOM and cheerio 0.22.0, except in cheerio the .childNodes property
// does not exist on text nodes (and maybe other non-element nodes).
childNodes: (n) => n.childNodes || [],
nodeProp: (n, p) => n[p],
getAttribute: (n, a) => {
// .getAttribute() works with DOM but not with cheerio 0.22.0.
@ -146,13 +131,13 @@ const makeContentCollector = (collectStyles, abrowser, apool, className2Author)
let selEnd = [-1, -1];
const _isEmpty = (node, state) => {
// consider clean blank lines pasted in IE to be empty
if (dom.numChildNodes(node) === 0) return true;
if (dom.numChildNodes(node) === 1 &&
if (dom.childNodes(node).length === 0) return true;
if (dom.childNodes(node).length === 1 &&
getAssoc(node, 'shouldBeEmpty') &&
dom.innerHTML(node) === ' ' &&
!getAssoc(node, 'unpasted')) {
if (state) {
const child = dom.childNode(node, 0);
const child = dom.childNodes(node)[0];
_reachPoint(child, 0, state);
_reachPoint(child, 1, state);
}
@ -483,8 +468,7 @@ const makeContentCollector = (collectStyles, abrowser, apool, className2Author)
// lists do not need to have a type, so before we make a wrong guess
// check if we find a better hint within the node's children
if (!rr && !type) {
for (let i = 0; i < dom.numChildNodes(node); i++) {
const child = dom.childNode(node, i);
for (const child of dom.childNodes(node)) {
if (dom.tagName(child) !== 'ul') continue;
type = dom.getAttribute(child, 'class');
if (type) break;
@ -566,9 +550,7 @@ const makeContentCollector = (collectStyles, abrowser, apool, className2Author)
}
}
const nc = dom.numChildNodes(node);
for (let i = 0; i < nc; i++) {
const c = dom.childNode(node, i);
for (const c of dom.childNodes(node)) {
cc.collectContent(c, state);
}