Added support for MString in File

File.cpp

@@ -46,9 +46,28 @@ namespace coreutils {
       this->size = size;
    }
 
-   void File::read() {
+   int File::read() {
       size = ::read(fd, buffer, size);
       setBufferSize(size);
+      return size;
+   }
+
+   int File::readLine() {
+      setBufferSize(4096);
+      size = 0;
+      int len = ::read(fd, buffer + size, 1);
+      if(len == 0)
+        mEof = true;
+      while(!mEof && (*(buffer + size) != '\n')) {
+         if(*(buffer + size) != '\r') {
+//            setBufferSize(size);
+            ++size;
+         }
+         len = ::read(fd, buffer + size, 1);
+         if(len == 0)
+           mEof = true;
+      }
+      return size;
    }
 
    void File::write(std::string data) {
@@ -68,4 +87,8 @@ namespace coreutils {
       return zstring;
    }
 
+   bool File::eof() {
+      return mEof;
+   }
+
 }