Author: sebb
Date: Sun Aug 2 18:25:01 2009
New Revision: 800124
URL: http://svn.apache.org/viewvc?rev=800124&view=rev
Log:
Update test engine for 3.0
Add -show option to display details of factories and engine
Modified:
jakarta/bsf/trunk/bsf3/bsf-utils/src/main/java/org/apache/bsf/Main.java
Modified:
jakarta/bsf/trunk/bsf3/bsf-utils/src/main/java/org/apache/bsf/Main.java
URL:
http://svn.apache.org/viewvc/jakarta/bsf/trunk/bsf3/bsf-utils/src/main/java/org/apache/bsf/Main.java?rev=800124&r1=800123&r2=800124&view=diff
==============================================================================
--- jakarta/bsf/trunk/bsf3/bsf-utils/src/main/java/org/apache/bsf/Main.java
(original)
+++ jakarta/bsf/trunk/bsf3/bsf-utils/src/main/java/org/apache/bsf/Main.java Sun
Aug 2 18:25:01 2009
@@ -23,28 +23,34 @@
import java.io.InputStreamReader;
import java.io.Reader;
import java.util.Hashtable;
+import java.util.Iterator;
import java.util.List;
import javax.script.Bindings;
+import javax.script.Compilable;
+import javax.script.Invocable;
import javax.script.ScriptContext;
import javax.script.ScriptEngine;
+import javax.script.ScriptEngineFactory;
import javax.script.ScriptEngineManager;
import javax.script.ScriptException;
/**
* This is the main driver for BSF to be run on the command line
- * to eval/exec/compile scripts directly.
+ * to eval scripts directly.
*
* @author Sanjiva Weerawarana
* @author Matthew J. Duftler
* @author Sam Ruby
*/
public class Main {
+ private static final String SHOW_ENGINE = "engine";
+ private static final String SHOW_FACTORIES = "factories";
private static final String ARG_IN = "-in";
private static final String ARG_LANG = "-lang";
- private static final String ARG_OUT = "-out";
+ private static final String ARG_EXT = "-ext";
+ private static final String ARG_SHOW = "-show";
private static final String DEFAULT_IN_FILE_NAME = "<STDIN>";
- private static final String DEFAULT_CLASS_NAME = "Test";
/**
* Static driver to be able to run BSF scripts from the command line.
@@ -59,30 +65,39 @@
Hashtable argsTable = new Hashtable();
- argsTable.put(ARG_OUT, DEFAULT_CLASS_NAME);
-
for (int i = 0; i < args.length; i += 2) {
argsTable.put(args[i], args[i + 1]);
}
String inFileName = (String) argsTable.get(ARG_IN);
+ String extension = (String) argsTable.get(ARG_EXT);
String language = (String) argsTable.get(ARG_LANG);
+ String show = (String) argsTable.get(ARG_SHOW);
+ ScriptEngineManager mgr = new ScriptEngineManager();
+ final List engineFactories = mgr.getEngineFactories();
+ if (engineFactories.isEmpty()){
+ throw new RuntimeException("Could not find any engine factories");
+ }
+
+ final int engineCount = engineFactories.size();
+ if (SHOW_FACTORIES.equalsIgnoreCase(show)) {
+ System.err.println("Found "+engineCount+ " engine factories");
+ for (Iterator iter = engineFactories.iterator(); iter.hasNext();){
+ ScriptEngineFactory fac = (ScriptEngineFactory) iter.next();
+ showFactory(fac, false);
+ }
+ return;
+ }
- if (language == null && inFileName != null) {
+ if (language == null && extension == null && inFileName != null) {
int i = inFileName.lastIndexOf('.');
if (i > 0) {
- language = inFileName.substring(i+1);
- }
- if (language == null) {
- throw new IllegalArgumentException("unable to determine
language");
+ extension = inFileName.substring(i+1);
}
}
-
- ScriptEngineManager mgr = new ScriptEngineManager();
- final List engineFactories = mgr.getEngineFactories();
- if (engineFactories.isEmpty()){
- throw new RuntimeException("Could not find any engine factories");
+ if (extension == null && language == null) {
+ throw new IllegalArgumentException("unable to determine language");
}
Reader in;
@@ -95,9 +110,29 @@
}
try {
- ScriptEngine engine = mgr.getEngineByExtension(language);
- if (engine == null){
- throw new IllegalArgumentException("unable to find engine
using Extension: "+language);
+ ScriptEngine engine;
+ if (language != null) {
+ engine = mgr.getEngineByName(language);
+ if (engine == null){
+ throw new IllegalArgumentException("unable to find engine
using Language: "+language);
+ }
+ } else {
+ engine = mgr.getEngineByExtension(extension);
+ if (engine == null){
+ throw new IllegalArgumentException("unable to find engine
using Extension: "+extension);
+ }
+ }
+ if (SHOW_ENGINE.equalsIgnoreCase(show)){
+ ScriptEngineFactory fac = engine.getFactory();
+ showFactory(fac, true);
+ System.err.println("Engine="+engine.getClass().getName());
+ if (engine instanceof Compilable){
+ System.err.println("Engine supports Compilable
interface.");
+ }
+ if (engine instanceof Invocable){
+ System.err.println("Engine supports Invocable interface.");
+ }
+ System.err.println();
}
Bindings bindings = engine.getBindings(ScriptContext.ENGINE_SCOPE);
bindings.put("args", args);
@@ -108,32 +143,124 @@
}
}
+ private static void showFactory(ScriptEngineFactory fac, boolean full) {
+ StringBuffer sb = new StringBuffer();
+ sb.append('[');
+ sb.append(fac.getClass().getName());
+ sb.append("]\n");
+
+ try {
+ sb.append(fac.getEngineName());
+ sb.append(" ");
+ try {
+ sb.append(fac.getEngineVersion());
+ } catch (NoClassDefFoundError e) {
+ sb.append("N/A");
+ }
+ sb.append(" for ");
+ sb.append(fac.getLanguageName());
+ sb.append(" ");
+ try {
+ sb.append(fac.getLanguageVersion());
+ } catch (NoClassDefFoundError e) {
+ sb.append("N/A");
+ }
+ sb.append("\n");
+
+ Iterator iter=fac.getNames().iterator();
+ char sep = '{';
+ while(iter.hasNext()){
+ sb.append(sep);
+ sb.append(iter.next());
+ sep=',';
+ }
+ if (sep == ','){
+ sb.append("} ");
+ }
+ iter=fac.getExtensions().iterator();
+ sep='[';
+ while(iter.hasNext()){
+ sb.append(sep);
+ sb.append('.');
+ sb.append(iter.next());
+ sep=',';
+ }
+ if (sep == ','){
+ sb.append("] ");
+ }
+ iter=fac.getMimeTypes().iterator();
+ sep='(';
+ while(iter.hasNext()){
+ sb.append(sep);
+ sb.append(iter.next());
+ sep=',';
+ }
+ if (sep == ','){
+ sb.append(")");
+ }
+ sb.append("\n");
+ if (full){
+ sb.append("OutputStatement: ");
+ try {
+ sb.append(fac.getOutputStatement("String"));
+ } catch (Exception e) {
+ sb.append(e.toString());
+ }
+ sb.append("\n");
+ sb.append("Program: ");
+ try {
+ sb.append(fac.getProgram(new String[]{"Line1","Line2"}));
+ } catch (Exception e) {
+ sb.append(e.toString());
+ }
+ sb.append("\n");
+ sb.append("Method call: ");
+ try {
+ sb.append(fac.getMethodCallSyntax("object", "method", new
String[]{"Arg1","Arg2"}));
+ } catch (Exception e) {
+ sb.append(e.toString());
+ }
+ sb.append("\n");
+ }
+ } catch (Throwable t) {
+ sb.append(t.toString());
+ } finally {
+ System.err.println(sb.toString());
+ }
+ }
+
private static void printHelp() {
System.err.println("Usage:");
System.err.println();
- System.err.println(" java " + Main.class.getName() + " [args]");
+ System.err.println(" java " + Main.class.getName() + " [opts]
[args]");
System.err.println();
- System.err.println(" args:");
+ System.err.println(" opts:");
System.err.println();
System.err.println(
- " [-in fileName] default: " +
DEFAULT_IN_FILE_NAME);
+ " [-lang shortname] (e.g. jexl, jython) Overrides
-ext.");
System.err.println(
- " [-lang languageName] default: "
- + "<If -in is specified and -lang");
+ " [-in fileName] default: " + DEFAULT_IN_FILE_NAME);
System.err.println(
- " "
- + " is not, attempt to determine");
+ " [-ext extension] default: "
+ + "<If -in is specified and neither -ext nor -lang");
System.err.println(
- " "
- + " language from file extension;");
+ " "
+ + " are, attempt to determine");
System.err.println(
- " "
- + " otherwise, -lang is required.>");
- System.err.println();
+ " "
+ + " extension from file extension;");
System.err.println(
- " Additional args used only if -mode is " + "set to
\"compile\":");
+ " "
+ + " otherwise, -ext or -lang is required.>");
+ System.err.println(
+ " [-show item]");
+ System.err.println(
+ " " + SHOW_FACTORIES + " - list all engine
factories and exit");
+ System.err.println(
+ " " +SHOW_ENGINE + " - list details of selected
factory and engine");
+ System.err.println();
System.err.println();
System.err.println(
- " [-out className] default: " +
DEFAULT_CLASS_NAME);
+ " The command-line arguments are stored in the array 'args'");
}
}
\ No newline at end of file
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