Method processReader

src/main/java/groovy/ui/GroovyMain.java:664–699

Process a script against a single input file. @param s script to execute. @param reader input file. @param pw output sink.

(Script s, BufferedReader reader, PrintWriter pw)

     * @param pw     output sink.
     */
    private void processReader(Script s, BufferedReader reader, PrintWriter pw) throws IOException {
        String line;
        String lineCountName = "count";
        s.setProperty(lineCountName, BigInteger.ZERO);
        String autoSplitName = "split";
        s.setProperty("out", pw);

        try {
            InvokerHelper.invokeMethod(s, "begin", null);
        } catch (MissingMethodException mme) {
            // ignore the missing method exception
            // as it means no begin() method is present
        }

        while ((line = reader.readLine()) != null) {
            s.setProperty("line", line);
            s.setProperty(lineCountName, ((BigInteger)s.getProperty(lineCountName)).add(BigInteger.ONE));

            if(autoSplit) {
                s.setProperty(autoSplitName, line.split(splitPattern));
            }

            Object o = s.run();

            if (autoOutput && o != null) {
                pw.println(o);
            }
        }

        try {
            InvokerHelper.invokeMethod(s, "end", null);
        } catch (MissingMethodException mme) {
            // ignore the missing method exception
            // as it means no end() method is present
        }
    }

    /**
     * Process the standard, single script with args.