kvoctrain/kvoctrain/kvt-core/kvt-xml/XmlWriter.cpp

   1 /* -*- C++ -*-
   2
   3   $Id$
   4
   5   This file is part of KIllustrator.
   6   Copyright (C) 1998 Kai-Uwe Sattler (kus@iti.cs.uni-magdeburg.de)
   7
   8   modified for kvoctrain by Ewald Arnold kvoctrain@ewald-arnold.dein April ´99
   9
  10   -----------------------------------------------------------------------
  11
  12   This program is free software; you can redistribute it and/or modify
  13   it under the terms of the GNU Library General Public License as
  14   published by
  15   the Free Software Foundation; either version 2 of the License, or
  16   (at your option) any later version.
  17
  18   This program is distributed in the hope that it will be useful,
  19   but WITHOUT ANY WARRANTY; without even the implied warranty of
  20   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  21   GNU General Public License for more details.
  22
  23   You should have received a copy of the GNU Library General Public License
  24   along with this program; if not, write to the Free Software
  25   Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  26 */
  27
  28 #include "XmlWriter.h"
  29
  30 XmlWriter::XmlWriter (KOXML_OSTREAM& os)
  31   : strm (os)
  32 {
  33   autoendl = true;
  34   isapo = false;
  35   apo = 0;
  36   strm << "<?xml version=\"1.0\"?>" << endl; // "encoding=UTF8"
  37 }
  38
  39
  40 XmlWriter::~XmlWriter () {
  41   flush ();
  42 }
  43
  44
  45 void XmlWriter::startTag (KOXML_STRING id, bool closeIt, bool empty, bool eol)
  46 {
  47   if (!id) return;
  48
  49   strm << "<" << id;
  50   if (!empty) {
  51     lastTags.push (id);
  52   }
  53
  54   if (closeIt) {
  55     if (empty)
  56       strm << "/";
  57     strm << ">";
  58     if (eol || autoendl) {
  59       isapo = false;
  60       apo = 0;
  61       strm << endl;
  62     }
  63   }
  64 }
  65
  66
  67 void XmlWriter::endTag (KOXML_STRING id, bool eol)
  68 {
  69   strm << "</";
  70   if (id.length() != 0)
  71     strm << id;
  72   else {
  73     KOXML_STRING tag = lastTags.top ();
  74     lastTags.pop ();
  75     strm << tag;
  76   }
  77   strm << ">";
  78   if (eol || autoendl) {
  79     isapo = false;
  80     apo = 0;
  81     strm << endl;
  82   }
  83 }
  84
  85 void XmlWriter::closeTag (bool empty, bool eol)
  86 {
  87   if (empty) {
  88     strm << "/";
  89     lastTags.pop ();
  90   }
  91   strm << ">";
  92   if (eol || autoendl) {
  93     isapo = false;
  94     apo = 0;
  95     strm << endl;
  96   }
  97 }
  98
  99
 100 void XmlWriter::setAutoEndl (const bool flag)
 101 {
 102   autoendl = flag;
 103 }
 104
 105
 106 void XmlWriter::endline()
 107 {
 108   isapo = false;
 109   apo = 0;
 110   strm << endl;
 111 }
 112
 113
 114 void XmlWriter::addAttribute (KOXML_STRING name, const KOXML_STRING& value)
 115 {
 116   if (!name) return;
 117
 118   KOXML_STRING val = value;
 119   // escape dangerous characters in sgml-style
 120   int pos = 0;
 121   while ((pos = val.find ('&', pos)) >= 0) {
 122     KOXML_STRING_INSERT( val, pos+1, "amp;");
 123     pos += 5; // skip &amp;
 124   }
 125   pos = 0;
 126   while ((pos = val.find ('<', pos)) >= 0) {
 127     KOXML_STRING_REMOVE( val, pos, 1);
 128     KOXML_STRING_INSERT( val, pos, "&lt;");
 129     pos += 4; // skip &nl;
 130   }
 131   pos = 0;
 132   while ((pos = val.find ('\n', pos)) >= 0) {
 133     KOXML_STRING_REMOVE( val, pos, 1);
 134     KOXML_STRING_INSERT( val, pos, "&nl;");
 135     pos += 4; // skip &nl;
 136   }
 137   pos = 0;
 138   while ((pos = val.find ('\r', pos)) >= 0) {
 139     KOXML_STRING_REMOVE( val, pos, 1);
 140     KOXML_STRING_INSERT( val, pos+1, "lf;");
 141     pos += 4; // skip &lf;
 142   }
 143   pos = 0;
 144   while ((pos = val.find ('\"', pos)) >= 0) {
 145     KOXML_STRING_REMOVE( val, pos, 1);
 146     KOXML_STRING_INSERT( val, pos, "&quot;");
 147     pos += 6; // skip &qout;
 148   }
 149
 150   strm << " ";
 151   strm << name << "=\"";
 152   strm << val;
 153   strm << "\"";
 154 }
 155
 156
 157 void XmlWriter::addAttribute (KOXML_STRING name, int value)
 158 {
 159   if (name.length() == 0)
 160     return;
 161
 162   strm << " ";
 163   strm << name << "=\"";
 164   strm << value;
 165   strm << "\"";
 166 }
 167
 168
 169 void XmlWriter::addAttribute (KOXML_STRING name, float value)
 170 {
 171   if (name.length() == 0)
 172     return;
 173
 174   strm << " ";
 175   strm << name << "=\"";
 176   strm << value;
 177   strm << "\"";
 178 }
 179
 180
 181 void XmlWriter::addAttribute (KOXML_STRING name, double value)
 182 {
 183   if (name.length() == 0)
 184     return;
 185
 186   strm << " ";
 187   strm << name << "=\"";
 188   strm << value;
 189   strm << "\"";
 190 }
 191
 192
 193 void XmlWriter::writeText (KOXML_STRING c)
 194 {
 195   int i = 0;
 196   while (i < (int) c.length()) {
 197     if (c[i] == '<')
 198       strm << "&lt;";
 199     else if (c[i] == '&')
 200       strm << "&amp;";
 201     else if (c[i] == '>')
 202       strm << "&gt;";
 203     else if (c[i] == '\"' || c[i] == '\'' || c[i] == '`') {
 204       strm << c[i];
 205       if (isapo) {
 206         if (apo == c[i])
 207           isapo = false;
 208       }
 209       else {
 210         isapo = true;
 211         apo = c[i];
 212       }
 213     }
 214     else if (c[i] == '\n') {
 215       if (isapo)
 216         strm << "&nl;";
 217       else
 218         strm << c[i];
 219     }
 220     else if (c[i] == '\r') {
 221       if (isapo)
 222          strm << "&lf;";
 223       else
 224         strm << c[i];
 225     }
 226     else
 227       strm << c[i];
 228     i++;
 229   }
 230 }
 231
 232
 233 void XmlWriter::indent (int i)
 234 {
 235   for (; i > 0; i--)
 236     strm << " ";
 237 }
 238
 239
 240 void XmlWriter::writeTag (KOXML_STRING s)
 241 {
 242   strm << "<"
 243        << s
 244        << ">";
 245 }
 246
 247
 248 void XmlWriter::flush ()
 249 {
 250 #ifndef KOXML_USE_STL
 251   stream()->flush ();
 252 #else
 253   strm.flush();
 254 #endif
 255 }