From 3ad2b4924d67a3b9c551399f7938f315a069c350 Mon Sep 17 00:00:00 2001 From: aurimasv Date: Mon, 14 Oct 2013 23:51:08 -0500 Subject: [PATCH] Fix cleanISSN --- chrome/content/zotero/xpcom/utilities.js | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/chrome/content/zotero/xpcom/utilities.js b/chrome/content/zotero/xpcom/utilities.js index d00362c786..da26d7a7c6 100644 --- a/chrome/content/zotero/xpcom/utilities.js +++ b/chrome/content/zotero/xpcom/utilities.js @@ -314,18 +314,18 @@ Zotero.Utilities = { */ "cleanISSN":function(/**String*/ issn) { issn = issn.replace(/[^0-9a-z]+/ig, '').toUpperCase() //we only want to ignore punctuation, spaces - .match(/[0-9]{7}[0-9X]/); //13 digit or 10 digit + .match(/[0-9]{7}[0-9X]/); if(!issn) return false; issn = issn[0]; - // Verify ISBN-10 checksum + // Verify ISSN checksum var sum = 0; for (var i = 0; i < 7; i++) { if(issn[i] == 'X') return false; //X can only be a check digit sum += issn[i] * (8-i); } //check digit might be 'X' - sum += (issn[9] == 'X')? 10 : issn[9]*1; + sum += (issn[7] == 'X')? 10 : issn[7]*1; return (sum % 11 == 0) ? issn.substring(0,4) + '-' + issn.substring(4) : false; },