Add arXiv identifier support (#1486)

chrome/content/zotero/xpcom/translation/translate.js

@@ -2624,6 +2624,12 @@ Zotero.Translate.Search.prototype.setIdentifier = function (identifier) {
 			contextObject: "rft_id=info:pmid/" + identifier.PMID
 		};
 	}
+	else if (identifier.arXiv) {
+		search = {
+			itemType: "journalArticle",
+			arXiv: identifier.arXiv
+		};
+	}
 	else {
 		throw new Error("Unrecognized identifier");
 	}

chrome/content/zotero/xpcom/utilities_internal.js

@@ -896,6 +896,22 @@ Zotero.Utilities.Internal = {
 			}
 		}
 		
+		// Next try arXiv
+		if (!identifiers.length) {
+			// arXiv identifiers are extracted without version number
+			// i.e. 0706.0044v1 is extracted as 0706.0044,
+			// because arXiv OAI API doesn't allow to access individual versions
+			let arXiv_RE = /((?:[^A-Za-z]|^)([\-A-Za-z\.]+\/\d{7})(?:(v[0-9]+)|)(?!\d))|((?:\D|^)(\d{4}.\d{4,5})(?:(v[0-9]+)|)(?!\d))/g;
+			let m;
+			while ((m = arXiv_RE.exec(text))) {
+				let arXiv = m[2] || m[5];
+				if (arXiv && !foundIDs.has(arXiv)) {
+					identifiers.push({arXiv: arXiv});
+					foundIDs.add(arXiv);
+				}
+			}
+		}
+		
 		// Finally try for PMID
 		if (!identifiers.length) {
 			// PMID; right now, the longest PMIDs are 8 digits, so it doesn't seem like we'll

test/tests/utilities_internalTest.js

@@ -153,5 +153,18 @@ describe("Zotero.Utilities.Internal", function () {
 			assert.lengthOf(Object.keys(identifiers[0]), 1);
 			assert.propertyVal(identifiers[0], "PMID", id);
 		});
+		
+		it("should extract multiple old and new style arXivs", async function () {
+			var identifiers = ZUI.extractIdentifiers("0706.0044 arXiv:0706.00441v1,hep-ex/9809001v1, math.GT/0309135.");
+			assert.lengthOf(identifiers, 4);
+			assert.lengthOf(Object.keys(identifiers[0]), 1);
+			assert.lengthOf(Object.keys(identifiers[1]), 1);
+			assert.lengthOf(Object.keys(identifiers[2]), 1);
+			assert.lengthOf(Object.keys(identifiers[3]), 1);
+			assert.propertyVal(identifiers[0], "arXiv", "0706.0044");
+			assert.propertyVal(identifiers[1], "arXiv", "0706.00441");
+			assert.propertyVal(identifiers[2], "arXiv", "hep-ex/9809001");
+			assert.propertyVal(identifiers[3], "arXiv", "math.GT/0309135");
+		});
 	});
 })