/** The logger. */
private static final Logger logger = Logger.getLogger(ExternalFilter.class.getName());
- /** The binary to execute. */
- private final String binary;
-
- /** The parameters for the binary. */
- private final Iterable<String> parameters;
-
/** The format of the source. */
private Format format;
/** The input stream that will hold the converted source. */
private PipedInputStream pipedInputStream;
- /**
- * Creates a new external filter.
- *
- * @param binary
- * The binary to execute
- * @param parameters
- * The parameter for the binary
- */
- public ExternalFilter(String binary, Iterable<String> parameters) {
- this.binary = binary;
- this.parameters = parameters;
- }
-
//
// FILTER METHODS
format = source.format();
try {
- Process process = Runtime.getRuntime().exec(Iterables.toArray(ImmutableList.<String>builder().add(binary).addAll(parameters).build(), String.class));
+ final Process process = Runtime.getRuntime().exec(Iterables.toArray(ImmutableList.<String>builder().add(binary(format)).addAll(parameters(format)).build(), String.class));
final InputStream processOutput = process.getInputStream();
final OutputStream processInput = process.getOutputStream();
final InputStream processError = process.getErrorStream();
protected void feed(byte[] buffer) throws IOException {
processInput.write(buffer);
}
+
+ @Override
+ protected void finish() throws IOException {
+ processInput.close();
+ processOutput.close();
+ processError.close();
+ }
}).start();
} catch (IOException ioe1) {
}
//
+ // SUBCLASS METHODS
+ //
+
+ /**
+ * Returns the location of the binary to execute.
+ *
+ * @param format
+ * The format being processed
+ * @return The location of the binary to execute
+ */
+ protected abstract String binary(Format format);
+
+ /**
+ * Returns the parameters for the binary.
+ *
+ * @param format
+ * The format being processed
+ * @return The parameters for the binary
+ */
+ protected abstract Iterable<String> parameters(Format format);
+
+ //
// STATIC METHODS
//