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Article.java

/* {{{ License.
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 */ //}}}

// :indentSize=4:lineSeparator=\n:noTabs=false:tabSize=4:folding=explicit:collapseFolds=0:

package org.mathpiper.ui.gui.applets.storage;

public class Article
{
      public String iArticle;
      public String testCode = "";
      public String codeBody = "";
      public String articleBody = "";
      public String[] examples = new String[100];
      public int nrExamples = 0;
      int currentExample = 0;

      public Article(String aArticle)
      {
            setArticle(aArticle);
      }
      public void setArticle(String aArticle)
      {
            iArticle = aArticle;
            testCode = "";
            codeBody = "";
            articleBody = "";
            nrExamples = 0;
            processBody(aArticle);
      }

      public String getExample()
      {
            String result = "\"No example defined\"";
            if (nrExamples>0)
            {
                  result = examples[currentExample];
                  currentExample++;
                  if (currentExample == nrExamples)
                  {
                        currentExample = 0;
                  }
            }
            return result;
      }

      public String getTestcode()
      {
            return testCode;
      }

      public String getNrExamples()
      {
            return ""+nrExamples;
      }

      void processText(String aString)
      {
            int pos = aString.indexOf("\n\n");
            if (pos == -1)
            {
                  pos = aString.indexOf("\r\n\r\n");
            }
            if (pos == -1)
            {
                  articleBody = articleBody + aString;
                  return;
            }
            else
            {
                  articleBody = articleBody + aString.substring(0, pos) + "\n<br /><br />\n";
                  processText(aString.substring(pos + 2));
            }
      }
      void processBody(String aString)
      {
            int maxNrEntries = 10;
            String keys[] = new String[maxNrEntries];
            String values[] = new String[maxNrEntries];
            int nrEntries = 0;
            while (aString.length() > 0)
            {
                  int pos = aString.indexOf("{{");
                  if (pos == -1)
                  {
                        processText(aString);
                        return;
                  }
                  processText(aString.substring(0, pos));
                  aString = aString.substring(pos + 2);
                  pos = aString.indexOf(":");
                  String name = aString.substring(0, pos);
                  aString = aString.substring(pos + 1);

                  String toProcess = null;
                  pos = name.indexOf(",");
                  if (pos > -1)
                  {
                        toProcess = name.substring(pos+1);
                        name = name.substring(0,pos);
                  }

                  String close = ":" + name + "}}";
                  pos = aString.indexOf(close);
                  String data = aString.substring(0, pos);
                  aString = aString.substring(pos + close.length());

                  nrEntries = 0;
                  if (toProcess != null)
                  {
                        int pos3 = toProcess.indexOf(",");
                        if (pos3 == -1)
                              pos3 = toProcess.length();
                        while (pos3>=0)
                        {
                              int pos2 = toProcess.indexOf(".");
                              if (pos2 != -1)
                              {
                                    keys[nrEntries] = toProcess.substring(0,pos2);
                                    values[nrEntries] = toProcess.substring(pos2+1,pos3);
                                    nrEntries++;
                                    if (nrEntries == maxNrEntries)
                                          break;
                              }
                              if (pos3 < toProcess.length())
                              {
                                    toProcess = toProcess.substring(pos3+1);
                                    pos3 = toProcess.indexOf(",");
                                    if (pos3 == -1)
                                          pos3 = toProcess.length();
                              }
                              else
                              {
                                    toProcess = "";
                                    pos3 = -1;
                              }
                        }
                  }

                  if (name.equals("title"))
                  {
                        articleBody = articleBody + "<h1>" + data + "</h1>";
                  }
                  else if (name.equals("code"))
                  {
                        boolean addToArticle = true;

                        int i;
                        for (i=0;i<nrEntries;i++)
                        {
                              if (keys[i].equals("article"))
                              {
                                    addToArticle = values[i].equals("true");
                              }
                        }

                        codeBody = codeBody + data;
                        if (addToArticle)
                        {
                              articleBody = articleBody + "<table width=\"100%\"><tr><td width=\"100%\" bgcolor=\"#DDDDEE\"><pre>" + data + "</pre></tr></table>";
                        }
                  }
                  else if (name.equals("test"))
                  {
                        testCode = testCode + data;
                  }
                  else if (name.equals("expr"))
                  {
                        articleBody = articleBody + "<tt><b>" + data + "</b></tt>";
                  }
                  else if (name.equals("math"))
                  {
                        // Example:
                        // {{math,heightPixels.120,widthPixels.700: ... :math}}
                        int height=70;
                        int i;
                        for (i=0;i<nrEntries;i++)
                        {
                              if (keys[i].equals("heightPixels"))
                              {
                                    height = Integer.parseInt(values[i]);
                              }
                        }
                        articleBody = articleBody + "<applet code=org.mathpiper.FormulaViewApplet archive=\"piper.jar\" width=600 height="+height+"><param name=\"expression\" value=\""+data+"\" /></applet><br />";
                  }
                  else if (name.equals("example"))
                  {
                        if (nrExamples < 100)
                        {
                              examples[nrExamples] = data;
                              nrExamples++;
                        }
                  }
            }
      }
}


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