|
1 package org.openlaszlo.iv.flash.js;
2
3 import java.io.*;
4 import java.net.URL  ;
5 import java.net.MalformedURLException ;
6 import java.util.*;
7 import java.lang.reflect.*;
8 import org.mozilla.javascript.*;
9 import org.mozilla.javascript.tools.ToolErrorReporter;
10
11
12 import org.openlaszlo.iv.flash.util.*;
13
14
17 public class JSHelper {
18
19 private static Context init( String args[], PrintStream out, org.openlaszlo.iv.flash.context.Context genContext ) {
20 Context cx = Context.enter();
21 global = getGlobal(genContext);
23 global.setOut(out);
24 errorReporter = new IVErrorReporter(false);
25 cx.setErrorReporter(errorReporter);
26 cx.setLanguageVersion(Context.VERSION_1_5);
27 cx.setOptimizationLevel(-1);
28
29 if( args == null ) args = new String [0];
31 Object [] array = args;
32 Scriptable argsObj = cx.newArray(global, args);
33 global.defineProperty("arguments", argsObj,
34 ScriptableObject.DONTENUM);
35 return cx;
36 }
37
38
41 public static int execFile(String fileName, String args[], PrintStream out) {
42
43 Context cx = init(args, out, null);
44
45 processFile(cx, global, fileName);
46
47 cx.exit();
48
49 return exitCode;
50 }
51
52
55 public static int execFile(String fileName, String args[], PrintStream out, org.openlaszlo.iv.flash.context.Context genContext) {
56
57 Context cx = init(args, out, genContext);
58
59 processFile(cx, global, fileName);
60
61 cx.exit();
62
63 return exitCode;
64 }
65
66
69 public static int execString( String js_text, String args[],
70 PrintStream out, org.openlaszlo.iv.flash.context.Context genContext )
71 {
72 Context cx = init(args, out, genContext);
73
74 StringReader in = new StringReader(js_text);
75 String source = js_text.length()>20? js_text.substring(0,20)+"...": js_text;
76 evaluateReader(cx, global, in, source, 1);
77
78 cx.exit();
79 return exitCode;
80 }
81
82 public static Global getGlobal() {
83 return getGlobal(null);
84 }
85
86 public static Global getGlobal(org.openlaszlo.iv.flash.context.Context genContext) {
87 if (global == null) {
88 try {
89 global = new Global(Context.enter(), genContext);
90 } finally {
91 Context.exit();
92 }
93 }
94 if( global != null ) {
95 global.genContext = genContext;
96 }
97 return global;
98 }
99
100 public static void processFile(Context cx, Scriptable scope,
101 String filename)
102 {
103 Reader in = null;
104 try {
106 URL url = new URL (filename);
107 InputStream is = url.openStream();
108 in = new BufferedReader(new InputStreamReader(is));
109 } catch (MalformedURLException mfex) {
110 in = null;
112 } catch (IOException ioex) {
113 Context.reportError(IVErrorReporter.getMessage(
114 "msg.couldnt.open.url", filename, ioex.toString()));
115 exitCode = EXITCODE_FILE_NOT_FOUND;
116 return;
117 }
118
119 if (in == null) {
120 try {
122 in = new FileReader(filename);
123 filename = new java.io.File (filename).getCanonicalPath();
124 } catch (FileNotFoundException ex) {
125 Context.reportError(IVErrorReporter.getMessage(
126 "msg.couldnt.open",
127 filename));
128 exitCode = EXITCODE_FILE_NOT_FOUND;
129 return;
130 } catch (IOException ioe) {
131 Log.logRB(Resource.JSERROR, ioe);
132 }
133 }
134 evaluateReader(cx, scope, in, filename, 1);
138 }
139
140 public static Object evaluateReader(Context cx, Scriptable scope,
141 Reader in, String sourceName,
142 int lineno)
143 {
144 Object result = cx.getUndefinedValue();
145 try {
146 result = cx.evaluateReader(scope, in, sourceName, lineno, null);
147 } catch (WrappedException we) {
148 Log.logRB(Resource.JSERROR, we);
149 } catch (EcmaError ee) {
150 String msg = IVErrorReporter.getMessage(
151 "msg.uncaughtJSException", ee.toString());
152 exitCode = EXITCODE_RUNTIME_ERROR;
153 if (ee.getSourceName() != null) {
154 Context.reportError(msg, ee.getSourceName(),
155 ee.getLineNumber(),
156 ee.getLineSource(),
157 ee.getColumnNumber());
158 } else {
159 Context.reportError(msg);
160 }
161 } catch (EvaluatorException ee) {
162 exitCode = EXITCODE_RUNTIME_ERROR;
164 } catch (JavaScriptException jse) {
165 Object value = jse.getValue();
167 if (value instanceof ThreadDeath )
168 throw (ThreadDeath ) value;
169 exitCode = EXITCODE_RUNTIME_ERROR;
170 Context.reportError(IVErrorReporter.getMessage(
171 "msg.uncaughtJSException",
172 jse.getMessage()));
173 } catch (IOException ioe) {
174 Log.logRB(Resource.JSERROR, ioe);
175 } finally {
176 try {
177 in.close();
178 } catch (IOException ioe) {
179 Log.logRB(Resource.JSERROR, ioe);
180 }
181 }
182 return result;
183 }
184
185
231 public static ScriptableObject getScope() {
232 return global;
233 }
234
235 public static InputStream getIn() {
236 return Global.getInstance(getGlobal()).getIn();
237 }
238
239 public static void setIn(InputStream in) {
240 Global.getInstance(getGlobal()).setIn(in);
241 }
242
243 public static PrintStream getOut() {
244 return Global.getInstance(getGlobal()).getOut();
245 }
246
247 public static void setOut(PrintStream out) {
248 Global.getInstance(getGlobal()).setOut(out);
249 }
250
251 public static PrintStream getErr() {
252 return Global.getInstance(getGlobal()).getErr();
253 }
254
255 public static void setErr(PrintStream err) {
256 Global.getInstance(getGlobal()).setErr(err);
257 }
258
259 static protected IVErrorReporter errorReporter;
260 static protected Global global;
261 static protected int exitCode = 0;
262 static private final int EXITCODE_RUNTIME_ERROR = 3;
263 static private final int EXITCODE_FILE_NOT_FOUND = 4;
264 }
266
267 |
Popular Tags |
Java API By Example, From Geeks To Geeks.