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Viewing changes to src/plugin/Evernote/utils/html2enmlconverter.cpp

  • Committer: Tarmac
  • Author(s): Michael Zanetti
  • Date: 2013-11-26 13:20:39 UTC
  • mfrom: (7.1.6 reminders-app-html2evml)
  • Revision ID: tarmac-20131126132039-3zmyobkekgqi3ckm
"properly" convert html back to enml. Loses images and tables but works quite well for all the rest.

Approved by David Planella, Ubuntu Phone Apps Jenkins Bot.

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src/plugin/Evernote/utils/html2enmlconverter.cpp
 
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#include "html2enmlconverter.h"
 
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#include <QXmlStreamReader>
 
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#include <QXmlStreamWriter>
 
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#include <QStringList>
 
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// Taken from http://xml.evernote.com/pub/enml2.dtd
 
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QStringList supportedTags = QStringList() << "a" << "abbr" << "acronym" << "address" << "area" << "b" << "bdo" << "big" <<
 
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                                             "blockquote" << "br" << "caption" << "center" << "cite" << "code" << "col" <<
 
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                                             "colgroup" << "dd" << "del" << "dfn" << "div" << "dl" << "dt" << "em" <<
 
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                                             "en-crypt" << "en-media" << "en-todo" << "font" << "h1" << "h2" << "h3" <<
 
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                                             "h4" << "h5" << "h6" << "hr" << "i" << "img" << "ins" << "kbd" << "li" <<
 
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                                             "map" << "ol" << "p" << "pre" << "q" << "s" << "samp" << "small" << "span" <<
 
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                                             "strike" << "strong" << "sub" << "sup" << "table" << "tbody" << "td" <<
 
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                                             "tfoot" << "th" << "thead" << "tr" << "tt" << "u" << "ul" << "var";
 
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Html2EnmlConverter::Html2EnmlConverter()
 
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{
 
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}
 
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QString Html2EnmlConverter::html2enml(const QString &html)
 
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{
 
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    // output
 
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    QString evml;
 
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    QXmlStreamWriter writer(&evml);
 
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    writer.writeStartDocument();
 
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    writer.writeDTD("<!DOCTYPE en-note SYSTEM \"http://xml.evernote.com/pub/enml2.dtd\">");
 
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    // input
 
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    QXmlStreamReader reader(html);
 
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    // state
 
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    bool isBody = false;
 
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    while (!reader.atEnd() && !reader.hasError()) {
 
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        QXmlStreamReader::TokenType token = reader.readNext();
 
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        if(token == QXmlStreamReader::StartDocument) {
 
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            continue;
 
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        }
 
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        // Handle start elements
 
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        if(token == QXmlStreamReader::StartElement) {
 
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            // skip everything if body hasn't started yet
 
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            if (!isBody) {
 
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                if (reader.name() == "body") {
 
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                    writer.writeStartElement("en-note");
 
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                    isBody = true;
 
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                }
 
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                continue;
 
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            }
 
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            // Write supported start elements to output (including attributes)
 
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            if (supportedTags.contains(reader.name().toString())) {
 
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                writer.writeStartElement(reader.name().toString());
 
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                writer.writeAttributes(reader.attributes());
 
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            }
 
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        }
 
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        // Write *all* normal text inside <body> </body> to output
 
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        if (isBody && token == QXmlStreamReader::Characters) {
 
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            writer.writeCharacters(reader.text().toString());
 
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        }
 
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        // handle end elements
 
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        if (token == QXmlStreamReader::EndElement) {
 
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            // skip everything after body
 
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            if (reader.name() == "body") {
 
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                writer.writeEndElement();
 
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                isBody = false;
 
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                break;
 
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            }
 
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            // Write closing tags for supported elements
 
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            if (supportedTags.contains(reader.name().toString())) {
 
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                writer.writeEndElement();
 
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            }
 
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        }
 
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    }
 
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    writer.writeEndDocument();
 
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    return evml;
 
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}