@Override
public Collection<Throwable> call() throws Exception {
if (this.formatString != null) {
try {
this.format = FORMAT.valueOf(this.formatString.toUpperCase());
} catch (Exception e) {
return wrapException(e);
}
}
try {
this.script = super.compileJavascript();
} catch (Exception err) {
return wrapException(err);
}
final List<String> args = getInputFiles();
try {
this.bindings = this.script.getEngine().createBindings();
if (getOutputFile() == null) {
this.writer = new PrintWriter(stdout());
} else {
this.writer = new PrintWriter(getOutputFile());
}
this.bindings.put("out", this.writer);
if (args.isEmpty()) {
if (this.format == null) {
return wrapException("Format must be specified when reading from stdin");
}
return execute(this.format, null);
}
for (String filename : IOUtils.unrollFiles(args)) {
this.bindings.put("FILENAME", filename);
FORMAT fmt = this.format;
if (fmt == null) {
for (FORMAT t : FORMAT.values()) {
if (t.canAs(filename)) {
fmt = t;
break;
}
}
}
if (fmt == null) {
return wrapException("Cannot get file format for " + filename);
}
Collection<Throwable> errors = execute(fmt, filename);
if (!errors.isEmpty()) {
return errors;
}
}
this.writer.flush();
return RETURN_OK;
} catch (Exception err) {
return wrapException(err);
} finally {
if (this.writer != null) this.writer.flush();
if (getOutputFile() != null) {
CloserUtil.close(this.writer);
}
this.writer = null;
bindings = null;
this.bindings = null;
this.format = null;
}
}
