| d18e47 | 2000-03-29 | Marcus Comstedt | | import com.roxen.roxen.*;
import java.util.HashMap;
import java.lang.reflect.Modifier;
import java.lang.reflect.Field;
import java.lang.reflect.Method;
import java.lang.reflect.Constructor;
public class JavaReflector extends AbstractLocationModule
{
String modifierFont = "<font color=\"red\">";
String typeFont = "<font color=\"steelblue\">";
String variableFont = "<font color=\"purple\">";
String methodFont = "<font color=\"brown\">";
String keywordFont = "<font color=\"green\">";
public String queryName()
{
return "Java Class Reflector";
}
public String info()
{
return "A location module providing an HTML interface to Java Reflection.";
}
protected RoxenResponse response(String title, String body)
{
String page = "<html><head><title>"+title+"</title>\n"+
"<body bgcolor=\"white\" text=\"black\" link=\"#6699cc\" "+
"alink=\"red\" vlink=\"#6677cc\">\n"+
body+
"</body></html>\n";
return RoxenLib.httpRXMLAnswer(page);
}
public RoxenResponse packageList(RoxenRequest id)
{
StringBuffer page = new StringBuffer();
page.append("<h1>All packages</h1>\n<ul>\n");
Package[] packages = Package.getPackages();
for(int i=0; i<packages.length; i++) {
Package p = packages[i];
page.append(" <li>");
HashMap args = new HashMap();
args.put("href", queryLocation()+p.getName());
page.append(RoxenLib.makeContainer("a", args, p.getName()));
page.append("</li>\n");
}
page.append("</ul>\n");
return response("Packages", page.toString());
}
public RoxenResponse describePackage(Package p, RoxenRequest id)
{
StringBuffer page = new StringBuffer();
page.append("<h1>Package "+p.getName()+"</h1>\n");
page.append("<table border=1>\n<tr><td></td><th>Title</th>"+
"<th>Vendor</th><th>Version</th></tr>\n");
page.append("<tr><th>Specification</th><td>");
page.append(RoxenLib.htmlEncodeString(p.getSpecificationTitle()+""));
page.append("</td><td>");
page.append(RoxenLib.htmlEncodeString(p.getSpecificationVendor()+""));
page.append("</td><td>");
page.append(RoxenLib.htmlEncodeString(p.getSpecificationVersion()+""));
page.append("</td></tr>\n<tr><th>Implementation</th><td>");
page.append(RoxenLib.htmlEncodeString(p.getImplementationTitle()+""));
page.append("</td><td>");
page.append(RoxenLib.htmlEncodeString(p.getImplementationVendor()+""));
page.append("</td><td>");
page.append(RoxenLib.htmlEncodeString(p.getImplementationVersion()+""));
page.append("</td></tr></table>\n");
return response("Package "+p.getName(), page.toString());
}
static protected void indentedLine(StringBuffer buf, String txt, int indent)
{
while(indent-->0) buf.append(" ");
buf.append(txt);
buf.append("<br>\n");
}
protected String describe(int modifiers)
{
if((modifiers&Modifier.INTERFACE)>0)
modifiers &= ~(Modifier.ABSTRACT | Modifier.STATIC | Modifier.INTERFACE);
return (modifiers==0? "" :
modifierFont+Modifier.toString(modifiers)+"</font> ");
}
protected String simpleClassName(String name)
{
int i = name.lastIndexOf('$');
if(i<0)
i = name.lastIndexOf('.');
return (i<0? name : name.substring(i+1));
}
protected String classLink(Class c)
{
if(c.isArray())
return classLink(c.getComponentType())+"[]";
String n = c.getName();
String t = typeFont+n.replace('$', '.')+"</font>";
if(c.isPrimitive())
return t;
int i = n.lastIndexOf('$');
HashMap args = new HashMap();
args.put("href", queryLocation()+(i<0? n : n.substring(0, i)));
return RoxenLib.makeContainer("a", args, t);
}
protected String classLink(Class[] c)
{
StringBuffer buf = new StringBuffer();
for(int i=0; i<c.length; i++) {
if(i>0)
buf.append(", ");
buf.append(classLink(c[i]));
}
return buf.toString();
}
protected void describe(StringBuffer page, Field f, RoxenRequest id,
int indent)
{
indentedLine(page, describe(f.getModifiers())+
classLink(f.getType())+" "+variableFont+
f.getName()+"</font>;", indent);
}
protected void describe(StringBuffer page, Method m, RoxenRequest id,
int indent)
{
Class[] th = m.getExceptionTypes();
indentedLine(page, describe(m.getModifiers())+
classLink(m.getReturnType())+" "+methodFont+
m.getName()+"</font>("+classLink(m.getParameterTypes())+
")"+(th.length>0? " "+keywordFont+"throws</font> "+
classLink(th):"")+";", indent);
}
protected void describe(StringBuffer page, Constructor c, RoxenRequest id,
int indent)
{
Class[] th = c.getExceptionTypes();
indentedLine(page, describe(c.getModifiers())+
methodFont+simpleClassName(c.getName())+
"</font>("+classLink(c.getParameterTypes())+
")"+(th.length>0? " "+keywordFont+"throws</font> "+
classLink(th):"")+";", indent);
}
protected void describe(StringBuffer page, Class c, RoxenRequest id,
int indent)
{
Class[] ifcs = c.getInterfaces();
if(c.isInterface())
indentedLine(page, describe(c.getModifiers())+
keywordFont+"interface</font> "+
methodFont+simpleClassName(c.getName())+"</font> "+
(ifcs.length>0? keywordFont+"extends</font> "+
classLink(ifcs)+" ":"")+
"{", indent);
else {
Class s = c.getSuperclass();
indentedLine(page, describe(c.getModifiers())+
keywordFont+"class</font> "+
methodFont+simpleClassName(c.getName())+"</font> "+
(s!=null? keywordFont+"extends</font> "+
classLink(s)+" ":"")+
(ifcs.length>0? keywordFont+"implements</font> "+
classLink(ifcs)+" ":"")+
"{", indent);
}
indent += 2;
Class[] dclasses = c.getDeclaredClasses();
for(int i=0; i<dclasses.length; i++) {
indentedLine(page, "", indent);
describe(page, dclasses[i], id, indent);
}
Field[] fields = c.getDeclaredFields();
if(fields.length>0)
indentedLine(page, "", indent);
for(int i=0; i<fields.length; i++)
describe(page, fields[i], id, indent);
Method[] methods = c.getDeclaredMethods();
if(methods.length>0)
indentedLine(page, "", indent);
for(int i=0; i<methods.length; i++)
describe(page, methods[i], id, indent);
Constructor[] constructors = c.getDeclaredConstructors();
if(constructors.length>0)
indentedLine(page, "", indent);
for(int i=0; i<constructors.length; i++)
describe(page, constructors[i], id, indent);
indentedLine(page, "", indent);
indent -= 2;
indentedLine(page, "}", indent);
}
public RoxenResponse describeClass(Class c, RoxenRequest id)
{
StringBuffer page = new StringBuffer();
String ci = (c.isInterface()? "Interface":"Class");
page.append("<h1>"+ci+" "+c.getName()+"</h1>\n");
page.append("\n<tt>\n");
Package p = c.getPackage();
if(p != null) {
page.append(keywordFont+"package</font> ");
HashMap args = new HashMap();
args.put("href", queryLocation()+p.getName());
page.append(RoxenLib.makeContainer("a", args,
modifierFont+p.getName()+"</font>"));
page.append(";<br><br>\n");
}
describe(page, c, id, 0);
page.append("</tt>\n");
return response(ci+" "+c.getName(), page.toString());
}
public RoxenResponse findFile(String f, RoxenRequest id)
{
if("".equals(f))
return packageList(id);
try {
Class c = Class.forName(f);
if(c != null && c.getDeclaringClass() == null &&
!c.isArray() && !c.isPrimitive())
return describeClass(c, id);
} catch (ClassNotFoundException e) { }
Package p = Package.getPackage(f);
if(p != null)
return describePackage(p, id);
return null;
}
protected void start()
{
modifierFont = "<font color=\""+queryString("modifier_color")+"\">";
typeFont = "<font color=\""+queryString("type_color")+"\">";
variableFont = "<font color=\""+queryString("variable_color")+"\">";
methodFont = "<font color=\""+queryString("method_color")+"\">";
keywordFont = "<font color=\""+queryString("keyword_color")+"\">";
}
public JavaReflector()
{
defvar("location", "/reflector/", "Mount point", TYPE_LOCATION,
"This is where the module will be inserted in the "+
"namespace of your server.");
defvar("modifier_color", "red", "Modifier font color", TYPE_STRING,
"Color to use for names of modifiers.");
defvar("type_color", "steelblue", "Type font color", TYPE_STRING,
"Color to use for names of types.");
defvar("variable_color", "purple", "Variable font color", TYPE_STRING,
"Color to use for names of variables and fields.");
defvar("method_color", "brown", "Method font color", TYPE_STRING,
"Color to use for names of methods and constructors.");
defvar("keyword_color", "green", "Keyword font color", TYPE_STRING,
"Color to use for names of keywords.");
}
}
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