1 /*
2  * Copyright (C) 2018 The Android Open Source Project
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  *      http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 
17 package util.build;
18 
19 import java.io.File;
20 import java.io.FileInputStream;
21 import java.io.IOException;
22 
23 public class FileUtil {
24 
readFile(File f)25     public static String readFile(File f) {
26         if (f.length() > Integer.MAX_VALUE) {
27             throw new IllegalArgumentException(f.toString());
28         }
29         byte tmp[] = new byte[(int)f.length()];
30         try (FileInputStream fis = new FileInputStream(f)) {
31             int pos = 0;
32             while (pos != tmp.length) {
33                 int read = fis.read(tmp, pos, tmp.length - pos);
34                 if (read == -1) {
35                     throw new IOException("Unexpected EOF");
36                 }
37                 pos += read;
38             }
39             return new String(tmp);
40         } catch (Exception e) {
41             throw new RuntimeException(e);
42         }
43     }
44 
45 }
46