@Override
public synchronized Object call(Context cx, Scriptable scope, Scriptable thisObj, Object[] args) {
Transaction previousTransaction = Transaction.currentTransaction();
Transaction.startTransaction();
String filename = (String) args[0];
if (filename.startsWith(".")) filename = currentJslibPath + filename;
filename = Pattern.compile("\\.\\./[^.]*/").matcher(filename).replaceAll("/");
filename = filename.replace("./", "");
InputStream inStream;
ScriptableObject exportObject;
String oldJsLibPath = currentJslibPath;
try {
File jslibFile = jslibFiles.get(filename);
if (jslibFile == null && !filename.endsWith(".js")) {
filename += ".js";
jslibFile = jslibFiles.get(filename);
}
if (jslibFile == null)
throw ScriptRuntime.constructError("Error", "File not found " + filename);
exportObject = exports.get(filename);
Long lastTimeStamp = lastTimeStamps.get(filename);
if (lastTimeStamp == null || lastTimeStamp < jslibFile.lastModified()) {
lastTimeStamps.put(filename, jslibFile.lastModified());
inStream = new FileInputStream(jslibFile);
exportObject = new NativeObject();
ScriptRuntime.setObjectProtoAndParent((ScriptableObject) exportObject, global);
// setup the module scope
ScriptableObject moduleScope = new NativeObject();
moduleScope.setParentScope(global);
int lastSlash = filename.lastIndexOf('/');
currentJslibPath = lastSlash == -1 ? "" : filename.substring(0, lastSlash + 1);
moduleScope.put("exports", moduleScope, exportObject);
// memoize
exports.put(filename, exportObject);
// evaluate the script
try {
cx.evaluateString(moduleScope, IOUtils.toString(inStream, "UTF-8"), filename, 1, null);
} catch (RuntimeException e) {
// revert
exports.remove(filename);
jslibFiles.put(filename, jslibFile);
throw e;
}
// re-retrieve it in case the library changed it
exportObject = (ScriptableObject) moduleScope.get("exports", moduleScope);
exports.put(filename, exportObject);
if ("jsgi-app.js".equals(filename)) {
// handle jackconfig.js, setting up the app if it is there
global.put("app", global, exportObject.get("app", exportObject));
}
// freeze it
// exportObject.sealObject();
}
Transaction.currentTransaction().commit();
} catch (IOException e) {
throw ScriptRuntime.constructError("Error", e.getMessage());
} finally {
currentJslibPath = oldJsLibPath;
previousTransaction.enterTransaction();
}
return exportObject;
}
