git-svn-id: https://profuse.googlecode.com/svn/branches/v2@218 aa027e90-d47c-11dd-86d7-074df07e0730

Endian/IOBuffer.cpp.h

@@ -0,0 +1,103 @@
+   class IOBuffer {
+        public:
+        
+        IOBuffer(void *vp, unsigned size)
+        {
+            _buffer = vp;
+            _size = size;
+            _offset = 0;
+        }
+        
+        void write8(uint8_t value)
+        {
+            Write8(_buffer, _offset, value);
+            _offset += 1;
+        }
+        void write16(uint16_t value)
+        {
+            Write16(_buffer, _offset, value);
+            _offset += 2;
+        }
+                
+        void write24(uint32_t value)
+        {
+            Write24(_buffer, _offset, value);
+            _offset += 3;
+        }
+        void write32(uint32_t value)
+        {
+            Write32(_buffer, _offset, value);
+            _offset += 4;
+        }
+        
+        void writeBytes(const void *src, unsigned count)
+        {
+            std::memcpy(_offset + (uint8_t *)_buffer, src, count);
+            _offset += count; 
+        }
+        
+        void writeZero(unsigned count)
+        {
+            std::memset(_offset + (uint8_t *)_buffer, 0, count);
+
+            _offset += count;
+        }
+        
+       
+       uint8_t read8()
+       {
+           uint8_t x = Read8(_buffer, _offset);
+           _offset += 1;
+           return x;
+       }
+
+       uint16_t read16()
+       {
+           uint16_t x = Read16(_buffer, _offset);
+           _offset += 2;
+           return x;
+       }
+       
+       uint32_t read24()
+       {
+           uint32_t x = Read24(_buffer, _offset);
+           _offset += 3;
+           return x;
+       }
+       
+       uint32_t read32()
+       {
+           uint32_t x = Read32(_buffer, _offset);
+           _offset += 4;
+           return x;
+       }
+       
+       void readBytes(void *dest, unsigned count)
+       {
+           std::memcpy(dest, _offset + (uint8_t *)_buffer, count);
+           _offset += count;    
+       }
+       
+       
+        unsigned offset() const { return _offset; }
+        void setOffset(unsigned offset) { _offset = offset; }
+        
+        void setOffset(unsigned offset, bool zero)
+        {
+            if (zero && offset > _offset)
+            {
+                writeZero(offset - _offset);
+            }
+            else setOffset(offset);
+        }
+        
+        unsigned size() const { return _size; }
+        
+        void *buffer() const { return _buffer; }
+        
+        private:
+        void *_buffer;
+        unsigned _size;
+        unsigned _offset;
+    
+    };