diff --git a/node/utils/ImportHtml.js b/node/utils/ImportHtml.js new file mode 100644 index 000000000..0e236e9b0 --- /dev/null +++ b/node/utils/ImportHtml.js @@ -0,0 +1,92 @@ +/** + * 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').jsdom; +var log4js = require('log4js'); + +var Changeset = require("./Changeset"); +var contentcollector = require("./contentcollector"); +var map = require("../../static/js/ace2_common.js").map; + +function setPadHTML(pad, html, callback) +{ + var apiLogger = log4js.getLogger("ImportHtml"); + + // Clean the pad. This makes the rest of the code easier + // by several orders of magnitude. + pad.setText(""); + var padText = pad.text(); + + // Parse the incoming HTML with jsdom + var doc = jsdom(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); + cc.collectContent(doc.childNodes[0]); + 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 = map(result.lines, function (e) { + return e + '\n'; + }).join(''); + 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 - 1; + 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.appendRevision(theChangeset); +} + +exports.setPadHTML = setPadHTML;