[hmath-commits] org.hmath.server/WEB-INF/src/org/hartmath/server/taglib BrowserTag.java,NONE,1.1 EvalTag.java,NONE,1.1 MathMLTag.java,NONE,1.1 WikiTag.java,NONE,1.1

[<js...@us...>]

Update of /cvsroot/hmath/org.hmath.server/WEB-INF/src/org/hartmath/server/taglib
In directory sc8-pr-cvs1.sourceforge.net:/tmp/cvs-serv21210/WEB-INF/src/org/hartmath/server/taglib

Added Files:
	BrowserTag.java EvalTag.java MathMLTag.java WikiTag.java 
Log Message:
initial version


--- NEW FILE: BrowserTag.java ---
package org.hartmath.server.taglib;

import java.io.IOException;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.jsp.JspException;
import javax.servlet.jsp.JspWriter;
import javax.servlet.jsp.tagext.BodyContent;
import javax.servlet.jsp.tagext.BodyTagSupport;

import org.snipsnap.app.Application;

/**
 *  Java JSP taglib interface to detect the clients browser type
 *
 */
public class BrowserTag extends BodyTagSupport {
  private String fType;
  private String fContent = null;
  public static String MSIE = "msie"; 
  public static String NETSCAPE = "netscape"; 
  
  /**
   * Returns "msie" for Internet Explorer; "netscape" otherwise
   * 
   * @param request
   * @return
   */
  public static String getBrowserType(HttpServletRequest request) {
    String userAgentString = request.getHeader("User-Agent");
    String browser = new String("");
    if (userAgentString != null) {
      if ((userAgentString.indexOf("MSIE") == -1) && (userAgentString.indexOf("msie") == -1)) {
        browser = NETSCAPE;
      } else {
        browser = MSIE;
      }

    }
    return browser;
  }

  private String getBrowserVersion(HttpServletRequest request) {
    String userAgentString = request.getHeader("User-Agent");
    String version = new String("");
    if (userAgentString != null) {
      if ((userAgentString.indexOf("MSIE") == -1) && (userAgentString.indexOf("msie") == -1)) {
        int verPos = userAgentString.indexOf("/");
        if (verPos != -1)
          version = userAgentString.substring(verPos + 1, verPos + 5);
      } else {
        String tempStr = userAgentString.substring(userAgentString.indexOf("MSIE"), userAgentString.length());
        version = tempStr.substring(4, tempStr.indexOf(";"));
      }
    }

    return version;
  }

  public int doAfterBody() throws JspException {
    //   log("doPost");
    BodyContent body = getBodyContent();
    JspWriter out = body.getEnclosingWriter();
    String bodyData = body.getString();
    HttpServletRequest request = (HttpServletRequest) pageContext.getRequest();
    //    HttpSession session = request.getSession(true);

    String browserType = getBrowserType(request);
    //    System.out.println(browserType);
    //    System.out.println(fType);
    if (browserType.equalsIgnoreCase(fType)) {
      if (fContent != null) {
        pageContext.getResponse().setContentType(fContent+"; "+Application.get().getConfiguration().getEncoding());
      }
      try {
        out.print(bodyData);
      } catch (IOException e) {

      }
    }
    return SKIP_BODY;
  }

  /**
   * @return
   */
  public String getType() {
    return fType;
  }

  /**
   * @param string
   */
  public void setType(String string) {
    fType = string;
  }

  /**
   * @return
   */
  public String getContent() {
    return fContent;
  }

  /**
   * @param string
   */
  public void setContent(String string) {
    fContent = string;
  }

}

--- NEW FILE: EvalTag.java ---
package org.hartmath.server.taglib;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpSession;
import javax.servlet.jsp.JspException;
import javax.servlet.jsp.JspWriter;
import javax.servlet.jsp.tagext.BodyContent;
import javax.servlet.jsp.tagext.BodyTagSupport;

import org.hartmath.core.eval.EvalUtilities;

/**
 *  Java JSP taglib interface for evaluating HartMath expressions
 *
 */
public class EvalTag extends BodyTagSupport {

  private static final String EVAL_UTILITY_KEY = "eval_utility_taglib";

  public int doAfterBody() throws JspException {
    //   log("doPost");
    BodyContent body = getBodyContent();
    JspWriter out = body.getEnclosingWriter();
    String inputExpression = body.getString();
    HttpServletRequest request = (HttpServletRequest) pageContext.getRequest();
    HttpSession session = request.getSession(true);

    if (inputExpression != null && !inputExpression.equals("")) {
      EvalUtilities evalUtility;
      if (session.isNew()) {
        //log("new session "+session.toString());
        evalUtility = new EvalUtilities(session.getId(), true);
        session.setAttribute(EVAL_UTILITY_KEY, evalUtility);
      } else {
        //log("old session "+session.toString());
        evalUtility = (EvalUtilities) session.getAttribute(EVAL_UTILITY_KEY);
        if (evalUtility == null) {
          evalUtility = new EvalUtilities(session.getId(), true);
          session.setAttribute(EVAL_UTILITY_KEY, evalUtility);
        }
      }

      evalUtility.toMathML(inputExpression, out);
    }
    return SKIP_BODY;
  }

}

--- NEW FILE: MathMLTag.java ---
package org.hartmath.server.taglib;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpSession;
import javax.servlet.jsp.JspException;
import javax.servlet.jsp.JspWriter;
import javax.servlet.jsp.tagext.BodyContent;
import javax.servlet.jsp.tagext.BodyTagSupport;

import org.hartmath.core.eval.MathMLUtilities;

/**
 *  Java JSP taglib interface for the HartMath MathML converter 
 *
 */
public class MathMLTag extends BodyTagSupport {

  private static final String MATHML_UTILITY_KEY = "mathml_utility_taglib";

  public int doAfterBody() throws JspException {
    //   log("doPost");
    BodyContent body = getBodyContent();
    JspWriter out = body.getEnclosingWriter();
    String inputExpression = body.getString();
    HttpServletRequest request = (HttpServletRequest) pageContext.getRequest();
    HttpSession session = request.getSession(true);

    if (inputExpression != null && !inputExpression.equals("")) {
      MathMLUtilities mathmlUtility;
      if (session.isNew()) {
        //log("new session "+session.toString());
        mathmlUtility = new MathMLUtilities(session.getId(), true);
        session.setAttribute(MATHML_UTILITY_KEY, mathmlUtility);
      } else {
        //log("old session "+session.toString());
        mathmlUtility = (MathMLUtilities) session.getAttribute(MATHML_UTILITY_KEY);
        if (mathmlUtility == null) {
          mathmlUtility = new MathMLUtilities(session.getId(), true);
          session.setAttribute(MATHML_UTILITY_KEY, mathmlUtility);
        }
      }

      mathmlUtility.toMathML(inputExpression, out);
    }
    return SKIP_BODY;
  }

}

--- NEW FILE: WikiTag.java ---
package org.hartmath.server.taglib;

import java.io.IOException;

import javax.servlet.jsp.JspException;
import javax.servlet.jsp.JspWriter;
import javax.servlet.jsp.tagext.BodyContent;
import javax.servlet.jsp.tagext.BodyTagSupport;

import org.radeox.api.engine.RenderEngine;
import org.radeox.engine.BaseRenderEngine;
import org.radeox.engine.context.BaseRenderContext;

/**
 *  Java JSP taglib interface for using Wiki syntax
 *  
 */
public class WikiTag extends BodyTagSupport {

  private final static RenderEngine RADEOX_RENDER_ENGINE = new BaseRenderEngine();
  private final static BaseRenderContext RADEOX_CONTEXT_ENGINE = new BaseRenderContext();

  public int doAfterBody() throws JspException {
    //   log("doPost");
    BodyContent body = getBodyContent();
    JspWriter out = body.getEnclosingWriter();
    String inputExpression = body.getString();

    if (inputExpression != null && !inputExpression.equals("")) {
      try {
        RADEOX_RENDER_ENGINE.render(out, inputExpression, RADEOX_CONTEXT_ENGINE);
      } catch (IOException e) {
        throw new JspException("IOException in JSP Wiki tag", e);
      }
    }
    return SKIP_BODY;
  }

}