Merge pull request #54 from svigerske/master

eliminate use of std::make_unique, remove zstr_make_unique_polyfill.h

So that codebase does not mix GPL and MIT licenses, but is still C++11-compatible

src/zstr.hpp

@@ -16,10 +16,6 @@
 #include <memory>
 #include <iostream>
 
-#if __cplusplus == 201103L
-#include <zstr_make_unique_polyfill.h>
-#endif
-
 namespace zstr
 {
 
@@ -140,10 +136,10 @@ class istreambuf
           window_bits(_window_bits)
     {
         assert(sbuf_p);
-        in_buff = std::make_unique<char[]>(buff_size);
+        in_buff = std::unique_ptr<char[]>(new char[buff_size]);
         in_buff_start = in_buff.get();
         in_buff_end = in_buff.get();
-        out_buff = std::make_unique<char[]>(buff_size);
+        out_buff = std::unique_ptr<char[]>(new char[buff_size]);
         setg(out_buff.get(), out_buff.get(), out_buff.get());
     }
 
@@ -213,7 +209,7 @@ class istreambuf
                 else
                 {
                     // run inflate() on input
-                    if (! zstrm_p) zstrm_p = std::make_unique<detail::z_stream_wrapper>(true, Z_DEFAULT_COMPRESSION, window_bits);
+                    if (! zstrm_p) zstrm_p = std::unique_ptr<detail::z_stream_wrapper>(new detail::z_stream_wrapper(true, Z_DEFAULT_COMPRESSION, window_bits));
                     zstrm_p->next_in = reinterpret_cast< decltype(zstrm_p->next_in) >(in_buff_start);
                     zstrm_p->avail_in = uint32_t(in_buff_end - in_buff_start);
                     zstrm_p->next_out = reinterpret_cast< decltype(zstrm_p->next_out) >(out_buff_free_start);
@@ -266,12 +262,12 @@ class ostreambuf
         : sbuf_p(_sbuf_p),
           in_buff(),
           out_buff(),
-          zstrm_p(std::make_unique<detail::z_stream_wrapper>(false, _level, _window_bits)),
+          zstrm_p(new detail::z_stream_wrapper(false, _level, _window_bits)),
           buff_size(_buff_size)
     {
         assert(sbuf_p);
-        in_buff = std::make_unique<char[]>(buff_size);
-        out_buff = std::make_unique<char[]>(buff_size);
+        in_buff = std::unique_ptr<char[]>(new char[buff_size]);
+        out_buff = std::unique_ptr<char[]>(new char[buff_size]);
         setp(in_buff.get(), in_buff.get() + buff_size);
     }