From 9d56eec131c38937048a985325b9e7b433ee1b21 Mon Sep 17 00:00:00 2001
From: muqing153 <103228194+muqing153@users.noreply.github.com>
Date: Tue, 31 Jan 2023 16:26:12 +0800
Subject: [PATCH] =?UTF-8?q?=E9=87=8D=E5=86=99=E4=BA=86=E5=8A=A9=E6=89=8B?=
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---
 .../java/com/coldmint/rust/pro/FileSort.java  | 131 ++++++++++++++++++
 1 file changed, 131 insertions(+)
 create mode 100644 app/src/main/java/com/coldmint/rust/pro/FileSort.java

diff --git a/app/src/main/java/com/coldmint/rust/pro/FileSort.java b/app/src/main/java/com/coldmint/rust/pro/FileSort.java
new file mode 100644
index 0000000..563a1c9
--- /dev/null
+++ b/app/src/main/java/com/coldmint/rust/pro/FileSort.java
@@ -0,0 +1,131 @@
+import java.io.File;
+import java.util.Collections;
+import java.util.Comparator;
+import java.util.List;
+
+public class FileSort {
+    final int name=0,time=1,size=2,type=3;
+    public static String[] type_list;
+    public FileSort(List<File> a,int manner){
+        switch (manner){
+            case name:
+                sort_name(a);
+                break;
+            case time:
+                sort_time(a);
+                break;
+            case size:
+                sort_size(a);
+                break;
+            case type:
+                sort_type(a);
+                break;
+            default:
+        }
+    }
+    public static void sort_front(List<File> a){
+        Collections.sort(a, new Comparator<File>() {
+            @Override
+            public int compare(File o1, File o2) {
+                if (o1.isDirectory() && o2.isFile())
+                    return -1;
+                if (o1.isFile() && o2.isDirectory())
+                    return 1;
+                return 0;
+            }
+        });
+    }
+
+    public static void sort_name(List<File> a){
+        Collections.sort(a,new Comparator<File>() {
+            @Override
+            public int compare(File o1, File o2) {
+                if (o1.isDirectory() && o2.isFile())
+                    return -1;
+                if (o1.isFile() && o2.isDirectory())
+                    return 1;
+                return o1.getName().compareTo(o2.getName());
+            }
+        });
+        sort_front(a);
+    }
+    public static void sort_time(List<File> a){
+        Collections.sort(a,new Comparator<File>() {
+            @Override
+            public int compare(File f1, File f2) {
+                long diff = f1.lastModified() - f2.lastModified();
+                if (diff > 0)
+                    return 1;
+                else if (diff == 0)
+                    return 0;
+                else
+                    return -1;
+                //如果 if 中修改为 返回-1 同时此处修改为返回 1  排序就会是递减
+            }
+        });
+        sort_front(a);
+    }
+
+    public void sort_size(List<File> a){
+
+        Collections.sort(a, new Comparator<File>() {
+            @Override
+            public int compare(File o1, File o2) {
+                long diff = o1.length() - o2.length();
+                if (diff > 0)
+                    return 1;
+                else if (diff == 0)
+                    return 0;
+                else
+                    return -1;
+            }
+        });
+        sort_front(a);
+    }
+    public static void sort_type(List<File> a){
+        //文件类型排序 按照后缀优先级
+//        System.out.println(type_list[0]);
+        Collections.sort(a, new Comparator<File>() {
+            @Override
+            public int compare(File o1, File o2) {
+                if (o1.isFile()) {
+                  String name_a = o1.getName();
+                  String o_z = name_a.substring(name_a.lastIndexOf("."));
+//                  System.out.println(o_z);
+                  //获取 name_a文件名字的后缀
+                  int length=length(type_list,o_z);
+                  System.out.println(length);
+                  //查找后缀是不是存在于 type_list数据中 如果存在返回存在位置 如果不存在则返回<0的值
+                  if (length>=0)
+                      return -1;
+                } else if (o2.isFile()) {
+                    String name_a = o2.getName();
+//                    System.out.println(name_a);
+                    String o_z = name_a.substring(name_a.lastIndexOf("."));
+
+                    //获取 name_a文件名字的后缀
+                    int length=length(type_list,o_z);
+                    if (length>=0)
+                        return 1;
+                }
+                return 0;
+            }
+        });
+    }
+    private static int length(String a){
+        for (int i=0;i<type_list.length;i++){
+            if (type_list[i].equals(a)){
+                return i;
+            }
+        }
+        return -1;
+    }
+    private static int length(String[] sz,String a){
+        for (int i=0;i<sz.length;i++){
+            if (sz[i].equals(a)) {
+                return i;
+            }
+        }
+        return -1;
+    }
+}