-Handlebars.registerHelper('mkws-paragraphs', function(obj) {
- var acc = [];
- for (var i = 0; i < obj.length; i++) {
- acc.push('<p>', obj[i], '</p>');
- }
- return acc.join('');
+// This is intended to handle paragraphs from Wikipedia, hence the
+// rather hacky code to remove numbered references.
+//
+Handlebars.registerHelper('mkws-paragraphs', function(obj, nPara, nSent) {
+ var acc = [];
+
+ // For some reason, Handlebars provides the value
+ // {"hash":{},"data":{}} for parameters that are not provided. So we
+ // have to be prepared for actual numbers, explicitly undefined
+ // values and this dumb magic value.
+ if (nPara === undefined || nPara.hasOwnProperty('hash') || nPara == 0 || nPara > obj.length) {
+ nPara = obj.length;
+ }
+ if (nSent === undefined || nSent.hasOwnProperty('hash') || nSent == 0) {
+ nSent = Infinity;
+ }
+
+ for (var i = 0; i < nPara; i++) {
+ // Remove numbered references such as "[1,3,4]" from text
+ var text = obj[i].replace(/\[[0-9,]+\]/g, '');
+ // Next line from http://stackoverflow.com/questions/18914629/split-string-into-sentences-in-javascript
+ var sentences = text.replace(/([.?!])\s*(?=[A-Z])/g, "$1|").split("|");
+ if (sentences.length > nSent)
+ sentences.length = nSent;
+
+ acc.push('<p>', sentences.join(' '), '</p>');
+ nSent -= sentences.length;
+ if (nSent == 0)
+ break;
+ }
+
+ return acc.join('');