Cleanup utils

[signal-cli] / src / main / java / org / asamk / signal / manager / util / IOUtils.java

diff --git a/src/main/java/org/asamk/signal/manager/util/IOUtils.java b/src/main/java/org/asamk/signal/manager/util/IOUtils.java
new file mode 100644 (file)
index 0000000..06f8aa2
--- /dev/null
+++ b/src/main/java/org/asamk/signal/manager/util/IOUtils.java
@@ -0,0 +1,72 @@
+package org.asamk.signal.manager.util;
+
+import org.whispersystems.signalservice.internal.util.Util;
+
+import java.io.ByteArrayOutputStream;
+import java.io.File;
+import java.io.FileOutputStream;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.OutputStream;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.nio.file.attribute.PosixFilePermission;
+import java.nio.file.attribute.PosixFilePermissions;
+import java.util.EnumSet;
+import java.util.Set;
+
+import static java.nio.file.attribute.PosixFilePermission.OWNER_EXECUTE;
+import static java.nio.file.attribute.PosixFilePermission.OWNER_READ;
+import static java.nio.file.attribute.PosixFilePermission.OWNER_WRITE;
+
+public class IOUtils {
+
+    public static File createTempFile() throws IOException {
+        return File.createTempFile("signal_tmp_", ".tmp");
+    }
+
+    public static byte[] readFully(InputStream in) throws IOException {
+        ByteArrayOutputStream baos = new ByteArrayOutputStream();
+        Util.copy(in, baos);
+        return baos.toByteArray();
+    }
+
+    public static void createPrivateDirectories(File file) throws IOException {
+        if (file.exists()) {
+            return;
+        }
+
+        final Path path = file.toPath();
+        try {
+            Set<PosixFilePermission> perms = EnumSet.of(OWNER_READ, OWNER_WRITE, OWNER_EXECUTE);
+            Files.createDirectories(path, PosixFilePermissions.asFileAttribute(perms));
+        } catch (UnsupportedOperationException e) {
+            Files.createDirectories(path);
+        }
+    }
+
+    public static void createPrivateFile(File path) throws IOException {
+        final Path file = path.toPath();
+        try {
+            Set<PosixFilePermission> perms = EnumSet.of(OWNER_READ, OWNER_WRITE);
+            Files.createFile(file, PosixFilePermissions.asFileAttribute(perms));
+        } catch (UnsupportedOperationException e) {
+            Files.createFile(file);
+        }
+    }
+
+    public static void copyStreamToFile(InputStream input, File outputFile) throws IOException {
+        copyStreamToFile(input, outputFile, 8192);
+    }
+
+    public static void copyStreamToFile(InputStream input, File outputFile, int bufferSize) throws IOException {
+        try (OutputStream output = new FileOutputStream(outputFile)) {
+            byte[] buffer = new byte[bufferSize];
+            int read;
+
+            while ((read = input.read(buffer)) != -1) {
+                output.write(buffer, 0, read);
+            }
+        }
+    }
+}