private void displayError()

in gshell-wisdom/gshell-wisdom-core/src/main/java/org/apache/geronimo/gshell/wisdom/shell/ConsoleErrorHandlerImpl.java [50:110]
37 lines of code
11 McCabe index (conditional complexity)

    private void displayError(final Throwable error) {
        assert error != null;

        // Decode any error notifications
        Throwable cause = error;
        if (error instanceof ErrorNotification) {
            cause = error.getCause();
        }

        IO io = ShellContextHolder.get().getIo();

        // Spit out the terse reason why we've failed
        io.err.print("@|bold,red ERROR| ");
        io.err.print(cause.getClass().getSimpleName());
        io.err.println(": @|bold,red " + cause.getMessage() + "|");

        // Determine if the stack trace flag is set
        String stackTraceProperty = System.getProperty("gshell.show.stacktrace");
        boolean stackTraceFlag = false;
        if (stackTraceProperty != null) {
        	stackTraceFlag = stackTraceProperty.trim().equals("true");
        }

        if (io.isDebug()) {
            // If we have debug enabled then skip the fancy bits below, and log the full error, don't decode shit
            log.debug(error.toString(), error);
        }
        else if (io.isVerbose() || stackTraceFlag) {
            // Render a fancy ansi colored stack trace
            StackTraceElement[] trace = cause.getStackTrace();
            StringBuilder buff = new StringBuilder();

            //
            // TODO: Move this to helper in gshell-ansi
            //

            for (StackTraceElement e : trace) {
                buff.append("        @|bold at| ").
                    append(e.getClassName()).
                    append(".").
                    append(e.getMethodName()).
                    append(" (@|bold ");

                buff.append(e.isNativeMethod() ? "Native Method" :
                        (e.getFileName() != null && e.getLineNumber() != -1 ? e.getFileName() + ":" + e.getLineNumber() :
                            (e.getFileName() != null ? e.getFileName() : "Unknown Source")));

                buff.append("|)");

                //
                // FIXME: This does not properly display the full exception detail when cause contains nested exceptions
                //

                io.err.println(buff);

                buff.setLength(0);
            }
        }

        io.err.flush();
    }