+// Copyright (C) 2013 Andy Spencer
+//
+// This program is free software: you can redistribute it and/or modify it under
+// the terms of the GNU Affero General Public License as published by the Free
+// Software Foundation, either version 3 of the License, or (at your option) any
+// later version.
+//
+// This program is distributed in the hope that it will be useful, but WITHOUT
+// ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+// FOR A PARTICULAR PURPOSE. See the GNU Affero General Public License for more
+// details.
+
+/* Constants */
+var vpaste = 'http://vpaste.net/';
+
+var light = '#f4f4f4';
+var dark = '#111133';
+var border = '#8888dd';
+
+var styles = [
+ 'background: ' + light + ';',
+ 'border: solid 1px ' + border + ';',
+ 'padding: 0.5em;',
+ 'overflow: auto;',
+ 'display: block;',
+ 'white-space: pre;',
+ 'text-align: left;',
+];
+
+/* Globals */
+var query;
+
+/* Update Style Sheet */
+function update_styles(style, name) {
+ var text = style.innerHTML;
+ var lines = text.split(/\n/);
+ for (var i = 0; i < lines.length; i++) {
+ var line = lines[i];
+ line = line.replace(/#ffffff/, light);
+ line = line.replace(/#000000/, dark);
+ if (line.match(/^pre/))
+ line = line.replace(/^pre/, '.'+name);
+ else if (line.match(/^\./))
+ line = '.'+name+' '+line;
+ else
+ line = '';
+ lines[i] = line;
+ }
+ style.innerHTML = lines.join('\n');
+}
+
+/* Embed paste into page */
+function embed_paste(ajax, style, html, name) {
+ if (ajax.readyState != 4 && ajax.readyState != 'complete')
+ return;
+ if (!ajax.responseXML)
+ throw new Error('No response XML: ' + ajax.responseText);
+ var xml = ajax.responseXML;
+ var vstyle = xml.getElementsByTagName('style')[0];
+ var vhtml = xml.getElementsByTagName('pre')[0];
+ update_styles(vstyle, name);
+ style.innerHTML += vstyle.innerHTML;
+ html.innerHTML = vhtml.innerHTML.replace(/^\n*/, '');
+ html.style.visibility = 'visible';
+}
+
+/* Strip whitespace from a paste */
+function strip_spaces(text) {
+ var prefix = null;
+ var lines = text.replace(/^\s*\n|\n\s*$/g,'').split('\n');
+ for (i in lines) {
+ if (lines[i].match(/^\s*$/))
+ continue;
+ var white = lines[i].replace(/\S.*/, '')
+ if (prefix === null || white.length < prefix.length)
+ prefix = white;
+ }
+ for (i in lines)
+ lines[i] = lines[i].replace(prefix, '');
+ return lines.join('\n');
+}
+
+/* Start embedding a paste */
+function query_paste(method, url, body, html, name) {
+ /* Add style tag box */
+ var style = document.createElement('style');
+ style.type = "text/css";
+ style.innerHTML = '.' + name + ' { ' + styles.join(' ') + ' }';
+ document.head.insertBefore(style, document.head.firstChild);
+
+ /* Get AJAX object */
+ var ajax = null;
+ if (!ajax) ajax = new XMLHttpRequest();
+ if (!ajax) ajax = new ActiveXObject('Microsoft.XMLHTTP');
+ if (!ajax) throw new Error('Cannot get AJAX object');
+
+ /* Insert default query */
+ if (query)
+ url = url.replace(/[?]/, '?' + query + ',');
+
+ /* Run AJAX Request */
+ ajax.onreadystatechange = function() {
+ embed_paste(ajax, style, html, name) };
+ ajax.open(method, url, true);
+ ajax.setRequestHeader('Accept', 'text/html');
+ ajax.overrideMimeType('application/xhtml+xml');
+ ajax.send(body);
+}
+
+/* Start embedding a paste */
+function start_embed() {
+ /* Get current paste information */
+ var scripts = document.getElementsByTagName('script');
+ var script = scripts[scripts.length-1];
+ var text = strip_spaces(script.innerHTML);
+ var name = 'vpaste_s' + scripts.length;
+ var regex = /^[^?]*[?]?(([a-zA-Z0-9.]*)[?&, ]?(.*))$/;
+ var parts = script.src.match(regex);
+
+ /* Handle header tags */
+ if (!text && !parts[2] || !document.body)
+ return query = parts[1];
+
+ /* Add paste box */
+ var html = document.createElement('pre');
+ html.innerHTML = 'Loading..';
+ html.className = script.className + ' vpaste ' + name;
+ document.body.appendChild(html);
+
+ /* Query the paste */
+ if (text)
+ query_paste('POST', vpaste+'view?'+parts[1],
+ text, html, name);
+ else
+ query_paste('GET', vpaste+parts[2]+'?'+parts[3],
+ null, html, name);
+}
+
+/* Convert all code tags to pastes */
+function format_code(type) {
+ var tags = document.getElementsByTagName('code');
+ for (var i = 0; i < tags.length; i++) {
+ var tag = tags[i];
+ if (type && tag.className != type)
+ continue;
+ var name = 'vpaste_c' + i;
+ var text = strip_spaces(tag.innerHTML);
+ tag.className += ' ' + name;
+ query_paste('POST', vpaste+'view?'+tag.title,
+ text, tag, name);
+ }
+}
+
+start_embed();
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