nmode's Git Repositories - signal-cli/blob - src/main/java/org/asamk/signal/util/IOUtils.java

   1 package org.asamk.signal.util;
   2
   3 import java.io.File;
   4 import java.io.IOException;
   5 import java.io.InputStream;
   6 import java.io.StringWriter;
   7 import java.nio.charset.Charset;
   8 import java.nio.file.Files;
   9 import java.nio.file.Path;
  10 import java.nio.file.attribute.PosixFilePermission;
  11 import java.nio.file.attribute.PosixFilePermissions;
  12 import java.util.EnumSet;
  13 import java.util.Set;
  14
  15 import static java.nio.file.attribute.PosixFilePermission.OWNER_EXECUTE;
  16 import static java.nio.file.attribute.PosixFilePermission.OWNER_READ;
  17 import static java.nio.file.attribute.PosixFilePermission.OWNER_WRITE;
  18
  19 public class IOUtils {
  20
  21     private IOUtils() {
  22     }
  23
  24     public static File createTempFile() throws IOException {
  25         return File.createTempFile("signal_tmp_", ".tmp");
  26     }
  27
  28     public static String readAll(InputStream in, Charset charset) throws IOException {
  29         StringWriter output = new StringWriter();
  30         byte[] buffer = new byte[4096];
  31         int n;
  32         while (-1 != (n = in.read(buffer))) {
  33             output.write(new String(buffer, 0, n, charset));
  34         }
  35         return output.toString();
  36     }
  37
  38     public static void createPrivateDirectories(String directoryPath) throws IOException {
  39         final File file = new File(directoryPath);
  40         if (file.exists()) {
  41             return;
  42         }
  43
  44         final Path path = file.toPath();
  45         try {
  46             Set<PosixFilePermission> perms = EnumSet.of(OWNER_READ, OWNER_WRITE, OWNER_EXECUTE);
  47             Files.createDirectories(path, PosixFilePermissions.asFileAttribute(perms));
  48         } catch (UnsupportedOperationException e) {
  49             Files.createDirectories(path);
  50         }
  51     }
  52
  53     public static void createPrivateFile(String path) throws IOException {
  54         final Path file = new File(path).toPath();
  55         try {
  56             Set<PosixFilePermission> perms = EnumSet.of(OWNER_READ, OWNER_WRITE);
  57             Files.createFile(file, PosixFilePermissions.asFileAttribute(perms));
  58         } catch (UnsupportedOperationException e) {
  59             Files.createFile(file);
  60         }
  61     }
  62
  63     public static String getDataHomeDir() {
  64         String dataHome = System.getenv("XDG_DATA_HOME");
  65         if (dataHome != null) {
  66             return dataHome;
  67         }
  68
  69         return System.getProperty("user.home") + "/.local/share";
  70     }
  71 }