From 3ca99f2b70ec9301c682e4271410b866eb4f4549 Mon Sep 17 00:00:00 2001
From: xuxiuxi <xuxiuxi@454eff88-639b-444f-9e54-f578c98de674>
Date: 星期日, 23 七月 2017 15:31:37 +0800
Subject: [PATCH] 

---
 VisitFace/DemoForBsk/app/src/main/java/cn/com/basic/face/util/FileUtil.java |   91 +++++++++++++++++++++++++++++++++++++++++++++
 1 files changed, 90 insertions(+), 1 deletions(-)

diff --git a/VisitFace/DemoForBsk/app/src/main/java/cn/com/basic/face/util/FileUtil.java b/VisitFace/DemoForBsk/app/src/main/java/cn/com/basic/face/util/FileUtil.java
index df47076..ba41c06 100644
--- a/VisitFace/DemoForBsk/app/src/main/java/cn/com/basic/face/util/FileUtil.java
+++ b/VisitFace/DemoForBsk/app/src/main/java/cn/com/basic/face/util/FileUtil.java
@@ -1,8 +1,14 @@
 package cn.com.basic.face.util;
 
 import java.io.BufferedOutputStream;
+import java.io.BufferedReader;
 import java.io.File;
+import java.io.FileInputStream;
 import java.io.FileOutputStream;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.InputStreamReader;
+import java.io.RandomAccessFile;
 
 import cn.com.basic.face.base.MainActivity;
 
@@ -11,6 +17,19 @@
 
     public static File writeToFile(String fileName, byte[] fileBytes) {
         try {
+            return writeToFile(fileName, fileBytes, 0, fileBytes.length);
+        }catch (Exception e) {
+            e.printStackTrace();
+        }
+        return null;
+    }
+
+
+    public static File writeToFile(String fileName, byte[] fileBytes, int offset, int size) {
+        try {
+            if (fileBytes == null) {
+                fileBytes = new byte[]{};
+            }
             String dir = MainActivity.getInstance().getFilesDir().getAbsolutePath();
 
             File file = new File(dir, fileName);
@@ -19,7 +38,7 @@
             }
             file.createNewFile();
             BufferedOutputStream bos = new BufferedOutputStream(new FileOutputStream(new File(dir, fileName)));
-            bos.write(fileBytes);
+            bos.write(fileBytes, offset, size);
             bos.flush();
             bos.close();
             return new File(dir, fileName);
@@ -29,4 +48,74 @@
         return null;
     }
 
+    public static File getFile(String shortFileName) {
+        String dir = MainActivity.getInstance().getFilesDir().getAbsolutePath();
+        return new File(dir, shortFileName);
+    }
+
+
+    public static byte[] readFile(File file) {
+        // Open file
+        RandomAccessFile f = null;
+        try {
+            f = new RandomAccessFile(file, "r");
+            // Get and check length
+            long longlength = f.length();
+            int length = (int) longlength;
+            if (length != longlength)
+                throw new IOException("File size >= 2 GB");
+            // Read file and return data
+            byte[] data = new byte[length];
+            f.readFully(data);
+            return data;
+        } catch (Exception e){
+            e.printStackTrace();
+        } finally {
+            try {
+                f.close();
+            }catch (Exception e) {
+                e.printStackTrace();
+            }
+        }
+        return new byte[]{};
+    }
+
+
+    public static void deleteFile(String fileName) {
+        try {
+            String dir = MainActivity.getInstance().getFilesDir().getAbsolutePath();
+
+            File file = new File(dir, fileName);
+            if (file.exists()) {
+                file.delete();
+            }
+        }catch (Exception e) {
+            e.printStackTrace();
+        }
+    }
+
+    public static String convertStreamToString(InputStream is) throws Exception {
+        BufferedReader reader = new BufferedReader(new InputStreamReader(is));
+        StringBuilder sb = new StringBuilder();
+        String line = null;
+        while ((line = reader.readLine()) != null) {
+            sb.append(line);
+        }
+        reader.close();
+        return sb.toString();
+    }
+
+    public static String getStringFromFile (String filePath) {
+        try {
+            File fl = new File(filePath);
+            FileInputStream fin = new FileInputStream(fl);
+            String ret = convertStreamToString(fin);
+            fin.close();
+            return ret;
+        } catch (Exception e) {
+            e.printStackTrace();
+        }
+        return "";
+    }
+
 }

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