Error with Rhino CLI

[nzakas]

When I try to run the current build of the Rhino CLI, I get the following error:

org.mozilla.javascript.WrappedException: Wrapped java.util.regex.PatternSyntaxEx
ception: Unexpected internal error near index 1

^
at org.mozilla.javascript.Context.throwAsScriptRuntimeEx(Context.java:17
57)
at org.mozilla.javascript.MemberBox.invoke(MemberBox.java:170)
at org.mozilla.javascript.NativeJavaMethod.call(NativeJavaMethod.java:24
3)
at org.mozilla.javascript.optimizer.OptRuntime.call1(OptRuntime.java:66)

    at org.mozilla.javascript.gen.c1._c285(Unknown Source)
    at org.mozilla.javascript.gen.c1.call(Unknown Source)
    at org.mozilla.javascript.optimizer.OptRuntime.callName(OptRuntime.java:

97. at org.mozilla.javascript.gen.c1._c284(Unknown Source)
    at org.mozilla.javascript.gen.c1.call(Unknown Source)
    at org.mozilla.javascript.optimizer.OptRuntime.callName(OptRuntime.java:
    

98. at org.mozilla.javascript.gen.c1._c288(Unknown Source)
    at org.mozilla.javascript.gen.c1.call(Unknown Source)
    at org.mozilla.javascript.NativeArray.iterativeMethod(NativeArray.java:1
    

99. at org.mozilla.javascript.NativeArray.execIdCall(NativeArray.java:249)
    at org.mozilla.javascript.IdFunctionObject.call(IdFunctionObject.java:12

100.  at org.mozilla.javascript.optimizer.OptRuntime.call1(OptRuntime.java:66)
     

    at org.mozilla.javascript.gen.c1._c287(Unknown Source)
    at org.mozilla.javascript.gen.c1.call(Unknown Source)
    at org.mozilla.javascript.optimizer.OptRuntime.callName(OptRuntime.java:

97. at org.mozilla.javascript.gen.c1._c277(Unknown Source)
    at org.mozilla.javascript.gen.c1.call(Unknown Source)
    at org.mozilla.javascript.optimizer.OptRuntime.callName(OptRuntime.java:
    

98. at org.mozilla.javascript.gen.c1._c0(Unknown Source)
    at org.mozilla.javascript.gen.c1.call(Unknown Source)
    at org.mozilla.javascript.ContextFactory.doTopCall(ContextFactory.java:3
    

99. at org.mozilla.javascript.ScriptRuntime.doTopCall(ScriptRuntime.java:283
    

100.  at org.mozilla.javascript.gen.c1.call(Unknown Source)
      at org.mozilla.javascript.gen.c1.exec(Unknown Source)
      at org.mozilla.javascript.tools.shell.Main.evaluateScript(Main.java:524)
     

    at org.mozilla.javascript.tools.shell.Main.processFileSecure(Main.java:4

46. at org.mozilla.javascript.tools.shell.Main.processFile(Main.java:412)
    at org.mozilla.javascript.tools.shell.Main.processSource(Main.java:403)
    at org.mozilla.javascript.tools.shell.Main.processFiles(Main.java:179)
    at org.mozilla.javascript.tools.shell.Main$IProxy.run(Main.java:100)
    at org.mozilla.javascript.Context.call(Context.java:577)
    at org.mozilla.javascript.ContextFactory.call(ContextFactory.java:503)
    at org.mozilla.javascript.tools.shell.Main.exec(Main.java:162)
    at org.mozilla.javascript.tools.shell.Main.main(Main.java:140)
    

Caused by: java.util.regex.PatternSyntaxException: Unexpected internal error nea
r index 1

^
at java.util.regex.Pattern.error(Unknown Source)
at java.util.regex.Pattern.compile(Unknown Source)
at java.util.regex.Pattern.(Unknown Source)
at java.util.regex.Pattern.compile(Unknown Source)
at java.lang.String.split(Unknown Source)
at java.lang.String.split(Unknown Source)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.mozilla.javascript.MemberBox.invoke(MemberBox.java:155)
... 36 more

Verified that this did not happen with the 1.6.1 release. Must be one of the changes since then.

[nzakas]

Tracked it down to this function, which was added recently:

function getRelativePath(source, target) {
    var sep = (source.indexOf("/") !== -1) ? "/" : "\\",
        targetArr = target.split(sep),
        sourceArr = source.split(sep),
        file = targetArr.pop(),
        targetPath = targetArr.join(sep),
        relativePath = "";

    while (targetPath.indexOf(sourceArr.join(sep)) === -1) {
        sourceArr.pop();
        relativePath += ".." + sep;
    }

    var relPathArr = targetArr.slice(sourceArr.length);
    relPathArr.length && (relativePath += relPathArr.join(sep) + sep);

    return relativePath + file;
}

Apparently, Rhino doesn't like the string "/" being passed into split().