From 5349ad435b3659f2e58fec2a04d0e581456f2351 Mon Sep 17 00:00:00 2001
From: Roman Shevchenko <roman.shevchenko@jetbrains.com>
Date: Mon, 29 Sep 2014 13:15:57 +0200
Subject: [PATCH] IDEA-130478 (optimization of 6fcac6a5: less short-lived
 objects)

---
 .../java/decompiler/util/InterpreterUtil.java | 28 +++++++++----------
 1 file changed, 13 insertions(+), 15 deletions(-)

diff --git a/src/org/jetbrains/java/decompiler/util/InterpreterUtil.java b/src/org/jetbrains/java/decompiler/util/InterpreterUtil.java
index 0644b69..dfd8b75 100644
--- a/src/org/jetbrains/java/decompiler/util/InterpreterUtil.java
+++ b/src/org/jetbrains/java/decompiler/util/InterpreterUtil.java
@@ -62,29 +62,27 @@ public class InterpreterUtil {
   }
 
   public static byte[] getBytes(ZipFile archive, ZipEntry entry) throws IOException {
-    return readAndClose(archive.getInputStream(entry), entry.getSize());
+    return readAndClose(archive.getInputStream(entry), (int)entry.getSize());
   }
 
   public static byte[] getBytes(File file) throws IOException {
-    return readAndClose(new FileInputStream(file), file.length());
+    return readAndClose(new FileInputStream(file), (int)file.length());
   }
 
-  private static byte[] readAndClose(InputStream stream, long length) throws IOException {
-
+  private static byte[] readAndClose(InputStream stream, int length) throws IOException {
     try {
-      byte[] bytes = new byte[(int) length];
-      DataInputStream dataStream = new DataInputStream(stream);
-
-      try {
-        dataStream.readFully(bytes);
-      } catch (EOFException ex) {
-        throw new IOException("premature end of stream", ex);
-      } finally {
-        dataStream.close();
+      byte[] bytes = new byte[length];
+      int n = 0, off = 0;
+      while (n < length) {
+        int count = stream.read(bytes, off + n, length - n);
+        if (count < 0) {
+          throw new IOException("premature end of stream");
+        }
+        n += count;
       }
-
       return bytes;
-    } finally {
+    }
+    finally {
       stream.close();
     }
   }