kttsd/filters/xhtml2ssml/xhtml2ssml.cpp

   1
   2
   3 /****************************************************************************
   4   XHTMLToSSMLParser class
   5
   6   Parses a piece of XHTML markup and converts into SSML.
   7   -------------------
   8   Copyright:
   9   (C) 2004 by Paul Giannaros <ceruleanblaze@gmail.com>
  10   -------------------
  11   Original author: Paul Giannaros <ceruleanblaze@gmail.com>
  12 ******************************************************************************/
  13
  14 /***************************************************************************
  15  *                                                                         *
  16  *   This program is free software; you can redistribute it and/or modify  *
  17  *   it under the terms of the GNU General Public License as published by  *
  18  *   the Free Software Foundation; version 2 of the License.               *
  19  *                                                                         *
  20  ***************************************************************************/
  21
  22 #include <QtXml>
  23 #include <QtCore/QFile>
  24 #include <QtCore/QTextStream>
  25
  26 #include <iostream>
  27
  28 #include "xmlelement.h"
  29 #include "xhtml2ssml.h"
  30
  31 /// Document parsing begin. Init stuff here.
  32 bool XHTMLToSSMLParser::startDocument() {
  33     /// Read the file which maps xhtml tags -> ssml tags. Look at the file for more information.
  34     QFile file("tagmappingrc");
  35     if(!file.open(QIODevice::ReadOnly)) {
  36         std::cerr << "Could not read config file 'tagmappingrc'. Please check that it exists and is readable.\n";
  37         // Kill further parsing
  38         return false;
  39     }
  40     QTextStream stream(&file);
  41     // File parsing.
  42     bool linestatus = true;
  43     while(!stream.atEnd()) {
  44         linestatus = readFileConfigEntry(stream.readLine());
  45         // If there's some syntactical error in the file then return false.
  46         if(!linestatus)
  47             return false;
  48         /// Maybe call processEvents() to prevent GUI blockages?
  49     }
  50     return true;
  51 }
  52
  53 bool XHTMLToSSMLParser::startElement(const QString &, const QString &, const QString &qName, const QXmlAttributes &atts) {
  54     QString attributes = "";
  55     if(atts.length() > 0) {
  56         const int attsLength = atts.length();
  57         for(int i = 0; i < attsLength; ++i)
  58             attributes += " " + atts.qName(i) + "=\"" + atts.value(i) + "\"";
  59     }
  60     QString fromelement = qName + attributes;
  61     // If this element is one of the keys that was specified in the configuration file, get what it should be converted to and
  62     // append to the output string.
  63     QString toelement = m_xhtml2ssml[fromelement];
  64     if(toelement)
  65         m_output.append(XMLElement::fromQString(toelement).startTag());
  66     return true;
  67 }
  68
  69 bool XHTMLToSSMLParser::endElement(const QString &, const QString &, const QString &qName) {
  70     QString fromelement = qName;
  71     QString toelement = m_xhtml2ssml[fromelement];
  72     if(toelement)
  73         m_output.append(XMLElement::fromQString(toelement).endTag());
  74     return true;
  75 }
  76
  77 bool XHTMLToSSMLParser::characters(const QString &characters) {
  78     m_output.append(characters);
  79     return true;
  80 }
  81
  82
  83 QString XHTMLToSSMLParser::convertedText() {
  84     return m_output.simplified();
  85 }
  86
  87 /// Parse a line from the configuration file which maps xhtml : ssml equivalent.
  88 /// It makes entries in the m_xhtml2ssml map accordingly.
  89 /// @param line               A line from a file to parse
  90 /// @returns                     true if the syntax of the line was okay and the parsing succeeded - false otherwise.
  91 bool XHTMLToSSMLParser::readFileConfigEntry(const QString &line) {
  92     // comments
  93     if(line.trimmed().startsWith('#')) {
  94         return true;
  95     }
  96     // break into QStringList
  97     // the second parameter to split is the string, with all space simplified and all space around the : removed, i.e
  98     //  "something     :      somethingelse"   ->  "something:somethingelse"
  99     QStringList keyvalue = QString( ":").replace(":").split( ":", line.simplified().replace(" :", ":"));
 100     if(keyvalue.count() != 2)
 101         return false;
 102     m_xhtml2ssml[keyvalue[0]] = keyvalue[1];
 103     return true;
 104 }