修复Base64 的第四字节错误

Author: WGB5445

.gitignore

@@ -0,0 +1,2 @@
+/build
+/storage

modules/Base64.move src/modules/Base64.move

@@ -1,20 +1,20 @@
 address 0x2 {
     module Base64{
         use 0x1::Vector;
-
+        use 0x1::Debug;
         public fun encode(str:vector<u8>):vector<u8>{
             if(Vector::is_empty(&str)){
                 return Vector::empty<u8>()
             };
             let size = Vector::length(& str);
-            
             let len64  =  if(size % 3 == 0)  {
                 (size/3*4)  
             }  
             else{  
                 (size/3+1)*4
             };
             let str_buf = str;
+
             Vector::push_back(&mut str_buf,0);
             let base64_table = Vector::empty<u8>();
             let big_word = 65;
@@ -36,13 +36,15 @@ address 0x2 {
                 Vector::push_back(&mut res,0);
                 l = l + 1;
             };
+
             let m = 0 ; 
             let n = 0 ;
             while(m < len64 - 2){
-                *Vector::borrow_mut(&mut res,m) = *Vector::borrow(& base64_table,((*Vector::borrow(&str_buf,n) >> 2) as u64));
+                *Vector::borrow_mut(&mut res,m)     = *Vector::borrow(& base64_table,((*Vector::borrow(&str_buf,n) >> 2) as u64));
                 *Vector::borrow_mut(&mut res,m + 1) = *Vector::borrow(& base64_table,((((*Vector::borrow(&str_buf,n) & 3) << 4)  | (*Vector::borrow(&str_buf,n + 1) >> 4) )as u64));
                 *Vector::borrow_mut(&mut res,m + 2) = *Vector::borrow(& base64_table,((((*Vector::borrow(&str_buf,n + 1) & 15) << 2) | (*Vector::borrow(&str_buf,n + 2) >> 6))as u64));
-                *Vector::borrow_mut(&mut res,m + 3) = *Vector::borrow(& base64_table,(((*Vector::borrow(&str_buf,n + 2) & 63) << 2)as u64));
+                *Vector::borrow_mut(&mut res,m + 3) = *Vector::borrow(& base64_table,(((*Vector::borrow(&str_buf,n + 2) & 63))as u64));
+                
                 m = m + 4;
                 n = n + 3;
             };
@@ -53,6 +55,7 @@ address 0x2 {
             else if(size % 3 == 2){
                 *Vector::borrow_mut(&mut res,m - 1) = eq;
             };
+
             return res
         }
     }

modules/Hero.move src/modules/Hero.move

@@ -8,6 +8,7 @@ script {
         let str = Vector::empty<u8>();
         Vector::push_back(&mut str,66);
         Vector::push_back(&mut str,114);
+        Vector::push_back(&mut str,100);
         Debug::print(&Base64::encode(str));
     }
 }