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(function(global, evalGlobal) {
/*
this is a minimal platform-specific thunk for narwhal.js
that brings the NARWHAL_PATH environment variable into the global
scope using Rhino's special access to Java.
*/
var moduleScopingEnabled = false;
/* this gets used for several fixtures */
var context = Packages.org.mozilla.javascript.Context.getCurrentContext();
var prefix = "";
if (typeof NARWHAL_HOME != "undefined") {
prefix = NARWHAL_HOME;
delete NARWHAL_HOME;
} else {
prefix = String(Packages.java.lang.System.getenv("NARWHAL_HOME") || "");
}
var packagePrefixes = [prefix];
if (typeof SEA != "undefined") {
packagePrefixes.push(SEA);
}
// TODO: enable this via a command line switch
context.setOptimizationLevel(-1);
var isFile = function (path) {
try { return new java.io.File(path).isFile(); } catch (e) {}
return false;
};
var read = function (path) {
var path = new java.io.File(path);
if (!path.isFile())
throw new Error(path + ' does not exist.');
var stream = new java.io.FileInputStream(path);
try {
var length = 1025;
var index = 0;
var total = 0;
var buffer;
var buffers = [];
do {
if (buffer === undefined)
buffer = java.lang.reflect.Array.newInstance(java.lang.Byte.TYPE, length);
var read = stream.read(buffer, index, buffer.length - index);
if (read < 0)
break;
index += read;
total += read;
if (index >= buffer.length) {
buffers.push(buffer);
buffer = undefined;
index = 0;
length *= 2;
}
//print("read="+read+" index="+index+" total="+total+" length="+length+" buffers.length="+buffers.length);
} while (read > 0);
var resultBuffer, resultLength;
if (buffers.length === 1 && index === 0) {
resultBuffer = buffers[0];
resultLength = resultBuffer.length;
} else {
resultBuffer = java.lang.reflect.Array.newInstance(java.lang.Byte.TYPE, total),
resultLength = 0;
for (var i = 0; i < buffers.length; i++) {
var buf = buffers[i];
java.lang.System.arraycopy(buf, 0, resultBuffer, resultLength, buf.length);
resultLength += buf.length;
}
if (index > 0) {
java.lang.System.arraycopy(buffer, 0, resultBuffer, resultLength, index);
resultLength += index;
}
}
if (total != resultLength || total !== resultBuffer.length)
throw new Error("IO.read sanity check failed: total="+total+" resultLength="+resultLength+" resultBuffer.length="+resultBuffer.length);
var result = String(new java.lang.String(resultBuffer, 'UTF-8'));
return result;
} finally {
stream.close();
}
};
var evaluate = function (text, name, lineNo) {
var scope;
if (moduleScopingEnabled) {
scope = new Object();
scope.__parent__ = null;
scope.__proto__ = global;
} else {
scope = global;
}
return context.compileFunction(
scope,
"function(require,exports,module,system,print){"+text+"\n// */\n}",
name,
lineNo,
null
);
};
delete global.print;
var print = function (string) {
Packages.java.lang.System.out.println(String(string));
};
var narwhal = context.evaluateReader(
global,
new Packages.java.io.FileReader(prefix + "/narwhal.js"),
"narwhal.js",
1,
null
);
var debug = +String(Packages.java.lang.System.getenv("NARWHAL_DEBUG"));
var verbose = +String(Packages.java.lang.System.getenv("NARWHAL_VERBOSE"));
narwhal({
global: global,
evalGlobal: evalGlobal,
platform: 'rhino',
platforms: ['rhino', 'default'],
print: print,
fs: {
read: read,
isFile: isFile
},
prefix: prefix,
packagePrefixes: packagePrefixes,
evaluate: evaluate,
debug: debug,
verbose: verbose
});
})(this, function () {
return eval(arguments[0]);
});
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