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only global sections are skipped if empty/comment/namespace

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This commit is contained in:
tophf 2017-05-05 17:21:17 +03:00
parent 71f4a53b41
commit d3d3a1f9b5
1 changed files with 19 additions and 18 deletions
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37
storage.js
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@ -14,7 +14,6 @@ var cachedStyles = {
filters: new Map(), // filterStyles() parameters mapped to the returned results, 10k max
regexps: new Map(), // compiled style regexps
urlDomains: new Map(), // getDomain() results for 100 last checked urls
emptyCode: new Map(), // entire code is comments/whitespace/@namespace
mutex: {
inProgress: false, // while getStyles() is reading IndexedDB all subsequent calls
onDone: [], // to getStyles() are queued and resolved when the first one finishes
@ -331,16 +330,17 @@ function getApplicableSections({style, matchUrl, strictRegexp = true, stopOnFirs
const sections = [];
for (const section of style.sections) {
const {urls, domains, urlPrefixes, regexps, code} = section;
if ((!urls.length && !urlPrefixes.length && !domains.length && !regexps.length
|| urls.length
const isGlobal = !urls.length && !urlPrefixes.length && !domains.length && !regexps.length;
const isMatching = !isGlobal && (
urls.length
&& urls.indexOf(matchUrl) >= 0
|| urlPrefixes.length
&& arraySomeIsPrefix(urlPrefixes, matchUrl)
|| domains.length
&& arraySomeIn(cachedStyles.urlDomains.get(matchUrl) || getDomains(matchUrl), domains)
|| regexps.length
&& arraySomeMatches(regexps, matchUrl, strictRegexp)
) && !styleCodeEmpty(code)) {
&& arraySomeMatches(regexps, matchUrl, strictRegexp));
if (isGlobal && !styleCodeEmpty(code) || isMatching) {
sections.push(section);
if (stopOnFirst) {
break;
@ -396,20 +396,21 @@ function getApplicableSections({style, matchUrl, strictRegexp = true, stopOnFirs
function styleCodeEmpty(code) {
// Collect the section if not empty or namespace-only.
// We don't check long code as it's slow both for emptyCode declared as Object
// and as Map in case the string is not the same reference used to add the item
let isEmpty = code !== null &&
code.length < 1000 &&
cachedStyles.emptyCode.get(code);
if (isEmpty !== undefined) {
return isEmpty;
// Collect the global section if it's not empty, not comment-only, not namespace-only.
const cmtOpen = code && code.indexOf('/*');
if (cmtOpen >= 0) {
const cmtCloseLast = code.lastIndexOf('*/');
if (cmtCloseLast < 0) {
code = code.substr(0, cmtOpen);
} else {
code = code.substr(0, cmtOpen) +
code.substring(cmtOpen, cmtCloseLast + 2).replace(RX_CSS_COMMENTS, '') +
code.substr(cmtCloseLast + 2);
}
isEmpty = !code || !code.trim()
|| code.indexOf('@namespace') >= 0
&& code.replace(RX_CSS_COMMENTS, '').replace(RX_NAMESPACE, '').trim() == '';
cachedStyles.emptyCode.set(code, isEmpty);
return isEmpty;
}
return !code
|| !code.trim()
|| code.includes('@namespace') && !code.replace(RX_NAMESPACE, '').trim();
}