Remove unused includes and apply google code style

src/zm_buffer.cpp

@@ -17,62 +17,51 @@
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 */ 
 
-#include <string.h>
-#include <fcntl.h>
-
 #include "zm.h"
 #include "zm_buffer.h"
 
-unsigned int Buffer::assign( const unsigned char *pStorage, unsigned int pSize )
-{
-  if ( mAllocation < pSize )
-  {
+unsigned int Buffer::assign(const unsigned char *pStorage, unsigned int pSize) {
+  if ( mAllocation < pSize ) {
     delete[] mStorage;
     mAllocation = pSize;
     mHead = mStorage = new unsigned char[pSize];
   }
   mSize = pSize;
-  memcpy( mStorage, pStorage, mSize );
+  memcpy(mStorage, pStorage, mSize);
   mHead = mStorage;
   mTail = mHead + mSize;
-  return( mSize );
+  return mSize;
 }
 
-unsigned int Buffer::expand( unsigned int count )
-{
+unsigned int Buffer::expand(unsigned int count) {
   int spare = mAllocation - mSize;
   int headSpace = mHead - mStorage;
   int tailSpace = spare - headSpace;
   int width = mTail - mHead;
-  if ( spare > (int)count )
-  {
-    if ( tailSpace < (int)count )
-    {
-      memmove( mStorage, mHead, mSize );
+  if ( spare > static_cast<int>count ) {
+    if ( tailSpace < static_cast<int>count ) {
+      memmove(mStorage, mHead, mSize);
       mHead = mStorage;
       mTail = mHead + width;
     }
-  }
-  else
-  {
+  } else {
     mAllocation += count;
     unsigned char *newStorage = new unsigned char[mAllocation];
-    if ( mStorage )
-    {
-      memcpy( newStorage, mHead, mSize );
+    if ( mStorage ) {
+      memcpy(newStorage, mHead, mSize);
       delete[] mStorage;
     }
     mStorage = newStorage;
     mHead = mStorage;
     mTail = mHead + width;
   }
-  return( mSize );
+  return mSize;
 }
 
-int Buffer::read_into( int sd, unsigned int bytes ) {
+int Buffer::read_into(int sd, unsigned int bytes) {
   // Make sure there is enough space
   this->expand(bytes);
-  int bytes_read = read( sd, mTail, bytes );
+  int bytes_read = read(sd, mTail, bytes);
   if ( bytes_read > 0 ) {
     mTail += bytes_read;
     mSize += bytes_read;