From f895b3c3b08a4cb7abd3b2b8ca49faa9c8512f5a Mon Sep 17 00:00:00 2001
From: hyzboy <hyzboy@gmail.com>
Date: Mon, 13 Jan 2020 20:12:15 +0800
Subject: [PATCH] add new Construct function of BaseString from InputStream

---
 inc/hgl/io/OutputStream.h |  2 +-
 inc/hgl/type/BaseString.h | 19 +++++++++++++++++++
 2 files changed, 20 insertions(+), 1 deletion(-)

diff --git a/inc/hgl/io/OutputStream.h b/inc/hgl/io/OutputStream.h
index 624f6cf..db686e8 100644
--- a/inc/hgl/io/OutputStream.h
+++ b/inc/hgl/io/OutputStream.h
@@ -26,7 +26,7 @@ namespace hgl
             virtual bool    CanSize()const=0;                                                       ///<是否可以取得尺寸
 
             virtual bool    Restart()=0;                                                            ///<复位访问指针
-            virtual int64   Seek(int64,SeekOrigin=SeekOrigin::Begin)=0;                                       ///<移动访问指针
+            virtual int64   Seek(int64,SeekOrigin=SeekOrigin::Begin)=0;                             ///<移动访问指针
             virtual int64   Tell()const=0;                                                          ///<返回当前访问位置
             virtual int64   GetSize()const=0;                                                       ///<取得流长度
             virtual int64   Available()const=0;                                                     ///<剩下的可以不受阻塞写入的字节数
diff --git a/inc/hgl/type/BaseString.h b/inc/hgl/type/BaseString.h
index 2934b5a..9f004ee 100644
--- a/inc/hgl/type/BaseString.h
+++ b/inc/hgl/type/BaseString.h
@@ -2,6 +2,7 @@
 #define HGL_TYPE_BASE_STRING_INCLUDE
 
 #include<hgl/type/StringInstance.h>
+#include<hgl/io/InputStream.h>
 #include<hgl/CompOperator.h>
 #include<hgl/type/Smart.h>
 
@@ -29,6 +30,24 @@ namespace hgl
             Set(str);
         }
 
+        BaseString(io::InputStream *is,int len=0)
+        {
+            if(len<=0)
+                len=is->Available();
+
+            if(len<=0)
+                return;
+
+            len/=sizeof(T);
+
+            T *str=new T[len+1];
+
+            len=is->Read(str,len*sizeof(T));
+
+            str[len]=0;
+            Set(str,len,true);
+        }
+
         explicit BaseString(const T);
 
         static BaseString<T> charOf(const T &ch)