michael@0: const charset = "EUC-JP";
michael@0: const ScriptableUnicodeConverter =
michael@0: 	Components.Constructor("@mozilla.org/intl/scriptableunicodeconverter",
michael@0: 			       "nsIScriptableUnicodeConverter");
michael@0: var gConverter;
michael@0: 
michael@0: function error(inString, outString, msg){
michael@0:     var dispIn = "";
michael@0:     var dispOut = "";
michael@0:     var i;
michael@0:     for (i = 0; i < inString.length; ++i) {
michael@0: 	dispIn += " x" + inString.charCodeAt(i).toString(16);
michael@0:     }
michael@0:     if (outString.length == 0) {
michael@0: 	dispOut = "<empty>";
michael@0:     } else {
michael@0: 	for (i = 0; i < outString.length; ++i) {
michael@0: 	    dispOut += " x" + outString.charCodeAt(i).toString(16);
michael@0: 	}
michael@0:     }
michael@0:     dump("\"" + dispIn + "\" ==> \"" + dispOut + "\"\n");
michael@0:     do_throw("security risk: " + msg);
michael@0: }
michael@0: 
michael@0: function test(inString) {
michael@0:     var outString = gConverter.ConvertToUnicode(inString) +
michael@0: 	            gConverter.Finish();
michael@0: 
michael@0:     switch (outString.length) {
michael@0:         case 0:
michael@0:         case 1:
michael@0:         case 2:
michael@0: 	    error(inString, outString, "Unexpected error");
michael@0: 	    break;
michael@0:         case 3:
michael@0: 	    error(inString, outString, "3 byte sequence eaten");
michael@0: 	    break;
michael@0:         case 4:
michael@0: 	    if (outString.charCodeAt(0) < 0x80 &&
michael@0: 		outString.charCodeAt(1) < 0x80 &&
michael@0: 		outString.charCodeAt(2) < 0x80 &&
michael@0: 		outString.charCodeAt(3) < 0x80) {
michael@0: 		error(inString, outString,
michael@0: 		      "3 byte sequence converted to 1 ASCII");
michael@0: 	    }
michael@0: 	    break;
michael@0:         case 5:
michael@0: 	    if (outString != inString &&
michael@0: 		outString.charCodeAt(0) < 0x80 &&
michael@0: 		outString.charCodeAt(1) < 0x80 &&
michael@0: 		outString.charCodeAt(2) < 0x80 &&
michael@0: 		outString.charCodeAt(3) < 0x80 &&
michael@0: 		outString.charCodeAt(4) < 0x80) {
michael@0: 		error(inString, outString,
michael@0: 		      "3 byte sequence converted to 2 ASCII");
michael@0: 	    }
michael@0: 	    break;
michael@0:         case 6:
michael@0: 	    if (outString != inString &&
michael@0: 		outString.charCodeAt(0) < 0x80 &&
michael@0: 		outString.charCodeAt(1) < 0x80 &&
michael@0: 		outString.charCodeAt(2) < 0x80 &&
michael@0: 		outString.charCodeAt(3) < 0x80 &&
michael@0: 		outString.charCodeAt(4) < 0x80 &&
michael@0: 		outString.charCodeAt(5) < 0x80) {
michael@0: 		error(inString, outString,
michael@0: 		      "3 byte sequence converted to 3 ASCII");
michael@0: 	    }
michael@0: 	    break;
michael@0:     }
michael@0: }
michael@0: 
michael@0: function run_test() {
michael@0:     gConverter = new ScriptableUnicodeConverter();
michael@0:     gConverter.charset = charset;
michael@0: 
michael@0:     var byte1, byte2, byte3;
michael@0:     for (byte1 = 1; byte1 < 0x100; ++byte1) {
michael@0: 	for (byte2 = 1; byte2 < 0x100; ++byte2) {
michael@0: 	    if (byte1 == 0x8f) {
michael@0: 		for (byte3 = 1; byte3 < 0x100; ++byte3) {
michael@0: 		    test(String.fromCharCode(byte1, byte2, byte3) + "foo");
michael@0: 		}
michael@0: 	    } else {
michael@0: 		test(String.fromCharCode(byte1, byte2) + " foo");
michael@0: 	    }
michael@0: 	}
michael@0:     }
michael@0: }