first commit

src/Streams/BufferedStream.cpp

@@ -0,0 +1,65 @@
+#include "TessesFramework/Streams/BufferedStream.hpp"
+namespace Tesses::Framework::Streams {
+    BufferedStream::BufferedStream(Stream* strm, bool owns, size_t bufferSize)
+    {
+        this->strm = strm;
+        this->owns = owns;
+        this->bufferSize = bufferSize;
+        this->buffer = new uint8_t[bufferSize];
+        this->read = 0;
+        this->offset = 0;
+    }
+    BufferedStream::BufferedStream(Stream& strm, size_t bufferSize) : BufferedStream(&strm,false, bufferSize)
+    {
+
+    }
+    bool BufferedStream::EndOfStream()
+    {
+        if(this->offset < this->read) return false;
+        return this->strm->EndOfStream();
+    }
+    bool BufferedStream::CanRead()
+    {
+        if(this->offset < this->read) return true;
+        return this->strm->CanRead();
+    }
+    bool BufferedStream::CanWrite()
+    {
+        return this->strm->CanWrite();
+    }
+    size_t BufferedStream::Read(uint8_t* buff, size_t sz)
+    {
+        if(this->offset < this->read)
+        {
+            sz = std::min(sz,this->read-this->offset);
+            memcpy(buff, this->buffer+this->offset, sz);
+            this->offset+=sz;
+            return sz;
+        }
+        if(sz < this->bufferSize)
+        {
+            this->read = this->strm->Read(this->buffer, this->bufferSize);
+            this->offset=0;
+
+            sz = std::min(sz,this->read-this->offset);
+            memcpy(buff, this->buffer+this->offset, sz);
+            this->offset+=sz;
+            return sz;
+        }
+        else
+        {
+            return this->strm->Read(buff, sz);
+        }
+    }
+    size_t BufferedStream::Write(const uint8_t* buff, size_t sz)
+    {
+        return this->strm->Write(buff,sz);
+    }   
+
+    BufferedStream::~BufferedStream()
+    {
+        if(this->owns)
+            delete this->strm;
+        delete buffer;
+    }
+}