From 4bedb61aa219b0add29e1c5b8fdc445fd8f918d4 Mon Sep 17 00:00:00 2001
From: aurimasv <aurimas.dev@gmail.com>
Date: Tue, 31 Dec 2013 05:56:45 -0600
Subject: [PATCH] [Retrieve Metadata] Look for JSTOR stable URLs and convert to
 DOIs Thanks to myqlarson for the suggestion. See
 https://forums.zotero.org/discussion/29354/1/query-limit-reached/#Item_42

---
 chrome/content/zotero/recognizePDF.js | 13 ++++++++++++-
 1 file changed, 12 insertions(+), 1 deletion(-)

diff --git a/chrome/content/zotero/recognizePDF.js b/chrome/content/zotero/recognizePDF.js
index 92e7297b8e..4358c36c95 100644
--- a/chrome/content/zotero/recognizePDF.js
+++ b/chrome/content/zotero/recognizePDF.js
@@ -75,10 +75,21 @@ var Zotero_RecognizePDF = new function() {
 		return _extractText(file, MAX_PAGES).then(function(lines) {
 			// Look for DOI - Use only first 80 lines to avoid catching article references
 			var allText = lines.join("\n"),
-				doi = Zotero.Utilities.cleanDOI(lines.slice(0,80).join('\n')),
+				firstChunk = lines.slice(0,80).join('\n'),
+				doi = Zotero.Utilities.cleanDOI(firstChunk),
 				promise;
 			Zotero.debug(allText);
 			
+			if(!doi) {
+				// Look for a JSTOR stable URL, which can be converted to a DOI by prepending 10.2307
+				doi = firstChunk.match(/www.\jstor\.org\/stable\/(\S+)/i);
+				if(doi) {
+					doi = Zotero.Utilities.cleanDOI(
+						doi[1].indexOf('10.') == 0 ? doi[1] : '10.2307/' + doi[1]
+					);
+				}
+			}
+			
 			if(doi) {
 				// Look up DOI
 				Zotero.debug("RecognizePDF: Found DOI: "+doi);