/**
* Calls the Unix sort command with the options <code>$filesNames -o
* $outputfile -T WaybackSettings#WAYBACK_AGGREGATOR_TEMP_DIR.
*
* Sets the LC_ALL environment variable before making the call.
*
* @param files The files to merge and sort
* @param outputFile The resulting sorted file
* @param additionalArgs A list af extra arguments, which (if different from
* null) are added to the sort call.<p> Note: If any
* of the args contain a whitespace the call will
* fail.
*/
private void processFiles(File[] files, File outputFile, List<String> additionalArgs) {
if (files.length == 0) {
// Empty file list will cause sort to wait for further input,
// and the call will therefore never return
return;
}
Process p = null;
try {
List<String> inputFileList = new LinkedList<String>();
for (int i = 0; i < files.length; i++) {
if (files[i].exists() && files[i].isFile()) {
inputFileList.add(files[i].getCanonicalPath());
} else {
log.warn(
"File "
+ files[i]
+ " doesn't exist or isn't a regular file, "
+ "dropping from list of files to "
+ "sort and merge");
}
}
List<String> cmd = new LinkedList<String>();
// Prepare to run the unix sort command, see sort manual page for
// details
cmd.add("sort");
cmd.addAll(inputFileList);
cmd.add("-o");
cmd.add(outputFile.getCanonicalPath());
cmd.add("-T");
cmd.add(Settings.get(WaybackSettings.WAYBACK_AGGREGATOR_TEMP_DIR));
if (additionalArgs != null && !additionalArgs.isEmpty()) {
for (String argument : additionalArgs) {
ArgumentNotValid.checkTrue(
argument.indexOf(' ') == -1,
"The argument '" + argument + "' contains spaces, this isn't allowed ");
}
cmd.addAll(additionalArgs);
}
ProcessBuilder pb = new ProcessBuilder(cmd);
// Reset all locale definitions
pb.environment().put("LC_ALL", "C");
// Run the command in the user.dir directory
pb.directory(new File(System.getProperty("user.dir")));
p = pb.start();
p.waitFor();
if (p.exitValue() != 0) {
log.error("Failed to sort index files, sort exited with " + "return code " + p.exitValue());
}
} catch (Exception e) {
log.error("Failed to aggregate indexes ", e);
}
}
/**
* Set the axis range.
*
* @param axis a numberAxis
* @param range a range
*/
private void setAxisRange(NumberAxis axis, double[] range) {
if (range == null || range.length != 2) {
axis.setAutoRange(true);
} else {
double lower = range[0];
double upper = range[1];
ArgumentNotValid.checkTrue(lower < upper, "Incorrect range");
axis.setAutoRange(false);
axis.setRange(new Range(lower, upper));
}
}