/**
* Executes the ffmpeg process with the previous given arguments.
*
* @return The standard output of the child process.
* @throws IOException If the process call fails.
*/
public String execute() throws IOException {
CommandLine cmdLine = new CommandLine(ffmpegExecutablePath);
int fileNumber = 0;
Map<String, File> map = new HashMap<String, File>();
for (int i = 0; i < args.size(); i++) {
final String arg = args.get(i);
final Boolean isFile = argIsFile.get(i);
if (isFile) {
String key = "file" + fileNumber;
map.put(key, new File(arg));
cmdLine.addArgument("${" + key + "}", false);
fileNumber++;
} else {
cmdLine.addArgument(arg);
}
}
cmdLine.setSubstitutionMap(map);
LOG.fine("Execute: " + cmdLine);
DefaultExecutor executor = new DefaultExecutor();
// 5minutes wait
ExecuteWatchdog watchdog = new ExecuteWatchdog(60 * 1000 * 5);
executor.setWatchdog(watchdog);
ByteArrayOutputStream out = new ByteArrayOutputStream();
executor.setStreamHandler(new PumpStreamHandler(out));
int[] exitValues = {0, 1};
executor.setExitValues(exitValues);
executor.execute(cmdLine);
return out.toString();
}
public int retrievePageCount(File source) {
File target =
new File(
System.getProperty("java.io.tmpdir"),
FilenameUtils.removeExtension(source.getName()) + ".pdf");
Map<String, Object> args = newHashMap();
args.put("source", source);
args.put("targetDir", target.getParentFile());
CommandLine cmd = new CommandLine("loffice");
cmd.addArgument("--headless");
cmd.addArgument("--convert-to");
cmd.addArgument("pdf");
cmd.addArgument("--outdir");
cmd.addArgument("${targetDir}");
cmd.addArgument("${source}");
cmd.setSubstitutionMap(args);
try {
DefaultExecuteResultHandler resultHandler = new DefaultExecuteResultHandler();
ExecuteWatchdog watchdog = new ExecuteWatchdog(10L * 1000L);
executor.setWatchdog(watchdog);
logger.trace("About to execute command {}", cmd.toString());
executor.execute(cmd, resultHandler);
resultHandler.waitFor();
final int exitValue = resultHandler.getExitValue();
if (exitValue != 0) {
logger.error(
"Unable to convert Microsoft Word file {} to PDF. Exit code = {}",
source.getAbsolutePath(),
exitValue);
return -1;
}
final int pageCount = pdfDocumentInspector.retrievePageCount(target);
deleteFileIfNeeded(target);
return pageCount;
} catch (IOException | InterruptedException e) {
logger.error("Unable to create a PDF from {}", source.getAbsolutePath(), e);
deleteFileIfNeeded(target);
return -1;
}
}
public String toString() {
CommandLine cmdLine = new CommandLine(ffmpegExecutablePath);
int fileNumber = 0;
Map<String, File> map = new HashMap<String, File>();
for (int i = 0; i < args.size(); i++) {
final String arg = args.get(i);
final Boolean isFile = argIsFile.get(i);
if (isFile) {
String key = "file" + fileNumber;
map.put(key, new File(arg));
cmdLine.addArgument("${" + key + "}", false);
fileNumber++;
} else {
cmdLine.addArgument(arg);
}
}
cmdLine.setSubstitutionMap(map);
return cmdLine.toString();
}