private static URL argumentToInput(String arg) throws MalformedURLException {
final File witnessFile = new File(arg);
if (witnessFile.exists()) {
return witnessFile.toURI().normalize().toURL();
} else {
return new URL(arg);
}
}
private static InputStream argumentToInputStream(String arg)
throws MalformedURLException, IOException {
if ("-".equals(arg)) {
return System.in;
}
final File witnessFile = new File(arg);
if (witnessFile.exists()) {
return witnessFile.toURI().normalize().toURL().openStream();
} else {
return new URL(arg).openStream();
}
}
private static PrintWriter argumentToOutput(String arg, Charset outputCharset)
throws ParseException, IOException {
if ("-".equals(arg)) {
return new PrintWriter(new OutputStreamWriter(System.out, outputCharset));
}
final File outFile = new File(arg);
try {
return new PrintWriter(Files.newBufferedWriter(outFile.toPath(), outputCharset));
} catch (FileNotFoundException e) {
throw new ParseException("Output file '" + outFile + "' not found");
}
}