ProcessInfo execute()

in surefire-booter/src/main/java/org/apache/maven/surefire/booter/PpidChecker.java [343:414]
64 lines of code
16 McCabe index (conditional complexity)

        ProcessInfo execute(String... command) {
            ProcessBuilder processBuilder = new ProcessBuilder(command);
            Process process = null;
            ProcessInfo processInfo = INVALID_PROCESS_INFO;
            StringBuilder out = new StringBuilder(64);
            out.append(join(" ", command)).append(NL);
            Path stdErr = null;
            try {
                stdErr = SureFireFileManager.createTempFile("surefire", null).toPath();

                processBuilder.redirectError(stdErr.toFile());
                if (IS_OS_HP_UX) // force to run shell commands in UNIX Standard mode on HP-UX
                {
                    processBuilder.environment().put("UNIX95", "1");
                }
                process = processBuilder.start();
                destroyableCommands.add(process);
                Scanner scanner = new Scanner(process.getInputStream(), charset);
                while (scanner.hasNextLine()) {
                    String line = scanner.nextLine();
                    out.append(line).append(NL);
                    processInfo = consumeLine(line.trim(), processInfo);
                }
                checkValid(scanner);
                int exitCode = process.waitFor();
                boolean isError = Thread.interrupted() || isStopped();
                if (exitCode != 0 || isError) {
                    out.append("<<exit>> <<")
                            .append(exitCode)
                            .append(">>")
                            .append(NL)
                            .append("<<stopped>> <<")
                            .append(isStopped())
                            .append(">>");
                    DumpErrorSingleton.getSingleton().dumpText(out.toString());
                }

                return isError ? ERR_PROCESS_INFO : (exitCode == 0 ? processInfo : INVALID_PROCESS_INFO);
            } catch (Exception e) {
                if (!(e instanceof InterruptedException
                        || e instanceof InterruptedIOException
                        || e.getCause() instanceof InterruptedException)) {
                    DumpErrorSingleton.getSingleton().dumpText(out.toString());

                    DumpErrorSingleton.getSingleton().dumpException(e);
                }

                //noinspection ResultOfMethodCallIgnored
                Thread.interrupted();

                return ERR_PROCESS_INFO;
            } finally {
                if (process != null) {
                    destroyableCommands.remove(process);
                    closeQuietly(process.getInputStream());
                    closeQuietly(process.getErrorStream());
                    closeQuietly(process.getOutputStream());
                }

                if (stdErr != null) {
                    try {
                        String error = new String(readAllBytes(stdErr)).trim();
                        if (!error.isEmpty()) {
                            DumpErrorSingleton.getSingleton().dumpText(error);
                        }
                        delete(stdErr);
                    } catch (IOException e) {
                        // cannot do anything about it, the dump file writes would fail as well
                    }
                }
            }
        }