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don't let DOI translator hang some page loads

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This commit is contained in:
Simon Kornblith 2009-05-04 20:58:58 +00:00
parent 0f649d6608
commit 227e393922
1 changed files with 37 additions and 20 deletions
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57
translators/DOI.js
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@ -11,19 +11,46 @@
"lastUpdated":"2009-04-07 15:48:00"
}
var DOIre = /(?:doi:)?\s*(10\.[\w.]+\/[^\/\s]+)/igm;
var items = {};
var selectArray = {};
function detectWeb(doc, url) {
var m1 = DOIre.exec(doc.documentElement.textContent);
var m2 = DOIre.exec(doc.documentElement.textContent);
if(m1 && m2) {
return "multiple";
} else if(m1) {
return "journalArticle";
// builds a list of DOIs
function getDOIs(doc) {
const DOIre = /\b(10\.[\w.]+\/[^\/\s]+)\.?\b/igm;
const DOIXPath = "//text()[contains(., '10.')]";
DOIre.lastMatch = 0;
var DOIs = [];
var node, m;
var results = doc.evaluate(DOIXPath, doc, null, XPathResult.ANY_TYPE, null);
while(node = results.iterateNext()) {
while(m = DOIre.exec(node.nodeValue)) {
var DOI = m[1];
if(DOI.substr(-1) == ")" && DOI.indexOf("(") == -1) {
DOI = DOI.substr(0, DOI.length-1);
}
// only add new DOIs
if(DOIs.indexOf(DOI) == -1) {
DOIs.push(DOI);
}
}
}
return DOIs;
}
function detectWeb(doc, url) {
const blacklistRe = /^https?:\/\/[^/]*google\.com/i;
if(!blacklistRe.test(url)) {
var DOIs = getDOIs(doc);
Zotero.debug(DOIs);
if(DOIs.length) {
return DOIs.length == 1 ? "journalArticle" : "multiple";
}
}
return false;
}
function retrieveNextDOI(DOIs, doc) {
@ -70,17 +97,7 @@ function retrieveNextDOI(DOIs, doc) {
}
function doWeb(doc, url) {
// build a list of DOIs
DOIre.lastMatch = 0;
DOIs = [];
while((m = DOIre.exec(doc.documentElement.textContent))) {
var DOI = m[1];
if(DOI.substr(-1) == ")" && DOI.indexOf("(") == -1) {
DOI = DOI.substr(0, DOI.length-1);
}
DOIs.push(DOI);
}
var DOIs = getDOIs(doc);
// retrieve full items asynchronously
Zotero.wait();
retrieveNextDOI(DOIs, doc);