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/**
* Copyright Yaco Sistemas S.L. 2011.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS-IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
var jsdom = require('jsdom-nocontextifiy').jsdom;
var log4js = require('log4js');
var Changeset = require("ep_etherpad-lite/static/js/Changeset");
var contentcollector = require("ep_etherpad-lite/static/js/contentcollector");
function setPadHTML(pad, html, callback)
{
var apiLogger = log4js.getLogger("ImportHtml");
// Parse the incoming HTML with jsdom
try{
var doc = jsdom(html.replace(/>\n+</g, '><'));
}catch(e){
apiLogger.warn("Error importing, possibly caused by malformed HTML");
var doc = jsdom("<html><body><div>Error during import, possibly malformed HTML</div></body></html>");
}
apiLogger.debug('html:');
apiLogger.debug(html);
// Convert a dom tree into a list of lines and attribute liens
// using the content collector object
var cc = contentcollector.makeContentCollector(true, null, pad.pool);
try{ // we use a try here because if the HTML is bad it will blow up
cc.collectContent(doc.childNodes[0]);
}catch(e){
apiLogger.warn("HTML was not properly formed", e);
return; // We don't process the HTML because it was bad..
}
var result = cc.finish();
apiLogger.debug('Lines:');
var i;
for (i = 0; i < result.lines.length; i += 1)
{
apiLogger.debug('Line ' + (i + 1) + ' text: ' + result.lines[i]);
apiLogger.debug('Line ' + (i + 1) + ' attributes: ' + result.lineAttribs[i]);
}
// Get the new plain text and its attributes
var newText = result.lines.join('\n');
apiLogger.debug('newText:');
apiLogger.debug(newText);
var newAttribs = result.lineAttribs.join('|1+1') + '|1+1';
function eachAttribRun(attribs, func /*(startInNewText, endInNewText, attribs)*/ )
{
var attribsIter = Changeset.opIterator(attribs);
var textIndex = 0;
var newTextStart = 0;
var newTextEnd = newText.length;
while (attribsIter.hasNext())
{
var op = attribsIter.next();
var nextIndex = textIndex + op.chars;
if (!(nextIndex <= newTextStart || textIndex >= newTextEnd))
{
func(Math.max(newTextStart, textIndex), Math.min(newTextEnd, nextIndex), op.attribs);
}
textIndex = nextIndex;
}
}
// create a new changeset with a helper builder object
var builder = Changeset.builder(1);
// assemble each line into the builder
eachAttribRun(newAttribs, function(start, end, attribs)
{
builder.insert(newText.substring(start, end), attribs);
});
// the changeset is ready!
var theChangeset = builder.toString();
apiLogger.debug('The changeset: ' + theChangeset);
pad.setText("");
pad.appendRevision(theChangeset);
}
exports.setPadHTML = setPadHTML;
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