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 org.whispersystems.signalservice.internal.util.Util;
   4
   5 import java.io.ByteArrayOutputStream;
   6 import java.io.File;
   7 import java.io.FileOutputStream;
   8 import java.io.IOException;
   9 import java.io.InputStream;
  10 import java.io.OutputStream;
  11 import java.io.StringWriter;
  12 import java.nio.charset.Charset;
  13 import java.nio.file.Files;
  14 import java.nio.file.Path;
  15 import java.nio.file.attribute.PosixFilePermission;
  16 import java.nio.file.attribute.PosixFilePermissions;
  17 import java.util.EnumSet;
  18 import java.util.Set;
  19
  20 import static java.nio.file.attribute.PosixFilePermission.OWNER_EXECUTE;
  21 import static java.nio.file.attribute.PosixFilePermission.OWNER_READ;
  22 import static java.nio.file.attribute.PosixFilePermission.OWNER_WRITE;
  23
  24 public class IOUtils {
  25
  26     private IOUtils() {
  27     }
  28
  29     public static File createTempFile() throws IOException {
  30         return File.createTempFile("signal_tmp_", ".tmp");
  31     }
  32
  33     public static String readAll(InputStream in, Charset charset) throws IOException {
  34         StringWriter output = new StringWriter();
  35         byte[] buffer = new byte[4096];
  36         int n;
  37         while (-1 != (n = in.read(buffer))) {
  38             output.write(new String(buffer, 0, n, charset));
  39         }
  40         return output.toString();
  41     }
  42
  43     public static byte[] readFully(InputStream in) throws IOException {
  44         ByteArrayOutputStream baos = new ByteArrayOutputStream();
  45         Util.copy(in, baos);
  46         return baos.toByteArray();
  47     }
  48
  49     public static void createPrivateDirectories(File file) throws IOException {
  50         if (file.exists()) {
  51             return;
  52         }
  53
  54         final Path path = file.toPath();
  55         try {
  56             Set<PosixFilePermission> perms = EnumSet.of(OWNER_READ, OWNER_WRITE, OWNER_EXECUTE);
  57             Files.createDirectories(path, PosixFilePermissions.asFileAttribute(perms));
  58         } catch (UnsupportedOperationException e) {
  59             Files.createDirectories(path);
  60         }
  61     }
  62
  63     public static void createPrivateFile(File path) throws IOException {
  64         final Path file = path.toPath();
  65         try {
  66             Set<PosixFilePermission> perms = EnumSet.of(OWNER_READ, OWNER_WRITE);
  67             Files.createFile(file, PosixFilePermissions.asFileAttribute(perms));
  68         } catch (UnsupportedOperationException e) {
  69             Files.createFile(file);
  70         }
  71     }
  72
  73     public static File getDataHomeDir() {
  74         String dataHome = System.getenv("XDG_DATA_HOME");
  75         if (dataHome != null) {
  76             return new File(dataHome);
  77         }
  78
  79         return new File(new File(System.getProperty("user.home"), ".local"), "share");
  80     }
  81
  82     public static void copyStreamToFile(InputStream input, File outputFile) throws IOException {
  83         copyStreamToFile(input, outputFile, 8192);
  84     }
  85
  86     public static void copyStreamToFile(InputStream input, File outputFile, int bufferSize) throws IOException {
  87         try (OutputStream output = new FileOutputStream(outputFile)) {
  88             byte[] buffer = new byte[bufferSize];
  89             int read;
  90
  91             while ((read = input.read(buffer)) != -1) {
  92                 output.write(buffer, 0, read);
  93             }
  94         }
  95     }
  96 }