ndnboost: Include boost::iostreams for internal use.
diff --git a/include/ndnboost/iostreams/filter/zlib.hpp b/include/ndnboost/iostreams/filter/zlib.hpp
new file mode 100644
index 0000000..6c5ed39
--- /dev/null
+++ b/include/ndnboost/iostreams/filter/zlib.hpp
@@ -0,0 +1,427 @@
+// (C) Copyright 2008 CodeRage, LLC (turkanis at coderage dot com)
+// (C) Copyright 2003-2007 Jonathan Turkanis
+// Distributed under the Boost Software License, Version 1.0. (See accompanying
+// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt.)
+
+// See http://www.boost.org/libs/iostreams for documentation.
+
+// Note: custom allocators are not supported on VC6, since that compiler
+// had trouble finding the function zlib_base::do_init.
+
+#ifndef NDNBOOST_IOSTREAMS_ZLIB_HPP_INCLUDED
+#define NDNBOOST_IOSTREAMS_ZLIB_HPP_INCLUDED
+
+#if defined(_MSC_VER) && (_MSC_VER >= 1020)
+# pragma once
+#endif
+
+#include <cassert>
+#include <iosfwd> // streamsize.
+#include <memory> // allocator, bad_alloc.
+#include <new>
+#include <ndnboost/config.hpp> // MSVC, STATIC_CONSTANT, DEDUCED_TYPENAME, DINKUM.
+#include <ndnboost/cstdint.hpp> // uint*_t
+#include <ndnboost/detail/workaround.hpp>
+#include <ndnboost/iostreams/constants.hpp> // buffer size.
+#include <ndnboost/iostreams/detail/config/auto_link.hpp>
+#include <ndnboost/iostreams/detail/config/dyn_link.hpp>
+#include <ndnboost/iostreams/detail/config/wide_streams.hpp>
+#include <ndnboost/iostreams/detail/config/zlib.hpp>
+#include <ndnboost/iostreams/detail/ios.hpp> // failure, streamsize.
+#include <ndnboost/iostreams/filter/symmetric.hpp>
+#include <ndnboost/iostreams/pipeline.hpp>
+#include <ndnboost/type_traits/is_same.hpp>
+
+// Must come last.
+#ifdef NDNBOOST_MSVC
+# pragma warning(push)
+# pragma warning(disable:4251 4231 4660) // Dependencies not exported.
+#endif
+#include <ndnboost/config/abi_prefix.hpp>
+
+namespace ndnboost { namespace iostreams {
+
+namespace zlib {
+ // Typedefs
+
+typedef uint32_t uint;
+typedef uint8_t byte;
+typedef uint32_t ulong;
+
+// Prefix 'x' prevents symbols from being redefined when Z_PREFIX is defined
+typedef void* (*xalloc_func)(void*, zlib::uint, zlib::uint);
+typedef void (*xfree_func)(void*, void*);
+
+ // Compression levels
+
+NDNBOOST_IOSTREAMS_DECL extern const int no_compression;
+NDNBOOST_IOSTREAMS_DECL extern const int best_speed;
+NDNBOOST_IOSTREAMS_DECL extern const int best_compression;
+NDNBOOST_IOSTREAMS_DECL extern const int default_compression;
+
+ // Compression methods
+
+NDNBOOST_IOSTREAMS_DECL extern const int deflated;
+
+ // Compression strategies
+
+NDNBOOST_IOSTREAMS_DECL extern const int default_strategy;
+NDNBOOST_IOSTREAMS_DECL extern const int filtered;
+NDNBOOST_IOSTREAMS_DECL extern const int huffman_only;
+
+ // Status codes
+
+NDNBOOST_IOSTREAMS_DECL extern const int okay;
+NDNBOOST_IOSTREAMS_DECL extern const int stream_end;
+NDNBOOST_IOSTREAMS_DECL extern const int stream_error;
+NDNBOOST_IOSTREAMS_DECL extern const int version_error;
+NDNBOOST_IOSTREAMS_DECL extern const int data_error;
+NDNBOOST_IOSTREAMS_DECL extern const int mem_error;
+NDNBOOST_IOSTREAMS_DECL extern const int buf_error;
+
+ // Flush codes
+
+NDNBOOST_IOSTREAMS_DECL extern const int finish;
+NDNBOOST_IOSTREAMS_DECL extern const int no_flush;
+NDNBOOST_IOSTREAMS_DECL extern const int sync_flush;
+
+ // Code for current OS
+
+//NDNBOOST_IOSTREAMS_DECL extern const int os_code;
+
+ // Null pointer constant.
+
+const int null = 0;
+
+ // Default values
+
+const int default_window_bits = 15;
+const int default_mem_level = 8;
+const bool default_crc = false;
+const bool default_noheader = false;
+
+} // End namespace zlib.
+
+//
+// Class name: zlib_params.
+// Description: Encapsulates the parameters passed to deflateInit2
+// and inflateInit2 to customize compression and decompression.
+//
+struct zlib_params {
+
+ // Non-explicit constructor.
+ zlib_params( int level = zlib::default_compression,
+ int method = zlib::deflated,
+ int window_bits = zlib::default_window_bits,
+ int mem_level = zlib::default_mem_level,
+ int strategy = zlib::default_strategy,
+ bool noheader = zlib::default_noheader,
+ bool calculate_crc = zlib::default_crc )
+ : level(level), method(method), window_bits(window_bits),
+ mem_level(mem_level), strategy(strategy),
+ noheader(noheader), calculate_crc(calculate_crc)
+ { }
+ int level;
+ int method;
+ int window_bits;
+ int mem_level;
+ int strategy;
+ bool noheader;
+ bool calculate_crc;
+};
+
+//
+// Class name: zlib_error.
+// Description: Subclass of std::ios::failure thrown to indicate
+// zlib errors other than out-of-memory conditions.
+//
+class NDNBOOST_IOSTREAMS_DECL zlib_error : public NDNBOOST_IOSTREAMS_FAILURE {
+public:
+ explicit zlib_error(int error);
+ int error() const { return error_; }
+ static void check NDNBOOST_PREVENT_MACRO_SUBSTITUTION(int error);
+private:
+ int error_;
+};
+
+namespace detail {
+
+template<typename Alloc>
+struct zlib_allocator_traits {
+#ifndef NDNBOOST_NO_STD_ALLOCATOR
+ typedef typename Alloc::template rebind<char>::other type;
+#else
+ typedef std::allocator<char> type;
+#endif
+};
+
+template< typename Alloc,
+ typename Base = // VC6 workaround (C2516)
+ NDNBOOST_DEDUCED_TYPENAME zlib_allocator_traits<Alloc>::type >
+struct zlib_allocator : private Base {
+private:
+ typedef typename Base::size_type size_type;
+public:
+ NDNBOOST_STATIC_CONSTANT(bool, custom =
+ (!is_same<std::allocator<char>, Base>::value));
+ typedef typename zlib_allocator_traits<Alloc>::type allocator_type;
+ static void* allocate(void* self, zlib::uint items, zlib::uint size);
+ static void deallocate(void* self, void* address);
+};
+
+class NDNBOOST_IOSTREAMS_DECL zlib_base {
+public:
+ typedef char char_type;
+protected:
+ zlib_base();
+ ~zlib_base();
+ void* stream() { return stream_; }
+ template<typename Alloc>
+ void init( const zlib_params& p,
+ bool compress,
+ zlib_allocator<Alloc>& zalloc )
+ {
+ bool custom = zlib_allocator<Alloc>::custom;
+ do_init( p, compress,
+ #if !NDNBOOST_WORKAROUND(NDNBOOST_MSVC, < 1300)
+ custom ? zlib_allocator<Alloc>::allocate : 0,
+ custom ? zlib_allocator<Alloc>::deallocate : 0,
+ #endif
+ &zalloc );
+ }
+ void before( const char*& src_begin, const char* src_end,
+ char*& dest_begin, char* dest_end );
+ void after( const char*& src_begin, char*& dest_begin,
+ bool compress );
+ int xdeflate(int flush); // Prefix 'x' prevents symbols from being
+ int xinflate(int flush); // redefined when Z_PREFIX is defined
+ void reset(bool compress, bool realloc);
+public:
+ zlib::ulong crc() const { return crc_; }
+ int total_in() const { return total_in_; }
+ int total_out() const { return total_out_; }
+private:
+ void do_init( const zlib_params& p, bool compress,
+ #if !NDNBOOST_WORKAROUND(NDNBOOST_MSVC, < 1300)
+ zlib::xalloc_func,
+ zlib::xfree_func,
+ #endif
+ void* derived );
+ void* stream_; // Actual type: z_stream*.
+ bool calculate_crc_;
+ zlib::ulong crc_;
+ zlib::ulong crc_imp_;
+ int total_in_;
+ int total_out_;
+};
+
+//
+// Template name: zlib_compressor_impl
+// Description: Model of C-Style Filte implementing compression by
+// delegating to the zlib function deflate.
+//
+template<typename Alloc = std::allocator<char> >
+class zlib_compressor_impl : public zlib_base, public zlib_allocator<Alloc> {
+public:
+ zlib_compressor_impl(const zlib_params& = zlib::default_compression);
+ ~zlib_compressor_impl();
+ bool filter( const char*& src_begin, const char* src_end,
+ char*& dest_begin, char* dest_end, bool flush );
+ void close();
+};
+
+//
+// Template name: zlib_compressor
+// Description: Model of C-Style Filte implementing decompression by
+// delegating to the zlib function inflate.
+//
+template<typename Alloc = std::allocator<char> >
+class zlib_decompressor_impl : public zlib_base, public zlib_allocator<Alloc> {
+public:
+ zlib_decompressor_impl(const zlib_params&);
+ zlib_decompressor_impl(int window_bits = zlib::default_window_bits);
+ ~zlib_decompressor_impl();
+ bool filter( const char*& begin_in, const char* end_in,
+ char*& begin_out, char* end_out, bool flush );
+ void close();
+ bool eof() const { return eof_; }
+private:
+ bool eof_;
+};
+
+} // End namespace detail.
+
+//
+// Template name: zlib_compressor
+// Description: Model of InputFilter and OutputFilter implementing
+// compression using zlib.
+//
+template<typename Alloc = std::allocator<char> >
+struct basic_zlib_compressor
+ : symmetric_filter<detail::zlib_compressor_impl<Alloc>, Alloc>
+{
+private:
+ typedef detail::zlib_compressor_impl<Alloc> impl_type;
+ typedef symmetric_filter<impl_type, Alloc> base_type;
+public:
+ typedef typename base_type::char_type char_type;
+ typedef typename base_type::category category;
+ basic_zlib_compressor( const zlib_params& = zlib::default_compression,
+ int buffer_size = default_device_buffer_size );
+ zlib::ulong crc() { return this->filter().crc(); }
+ int total_in() { return this->filter().total_in(); }
+};
+NDNBOOST_IOSTREAMS_PIPABLE(basic_zlib_compressor, 1)
+
+typedef basic_zlib_compressor<> zlib_compressor;
+
+//
+// Template name: zlib_decompressor
+// Description: Model of InputFilter and OutputFilter implementing
+// decompression using zlib.
+//
+template<typename Alloc = std::allocator<char> >
+struct basic_zlib_decompressor
+ : symmetric_filter<detail::zlib_decompressor_impl<Alloc>, Alloc>
+{
+private:
+ typedef detail::zlib_decompressor_impl<Alloc> impl_type;
+ typedef symmetric_filter<impl_type, Alloc> base_type;
+public:
+ typedef typename base_type::char_type char_type;
+ typedef typename base_type::category category;
+ basic_zlib_decompressor( int window_bits = zlib::default_window_bits,
+ int buffer_size = default_device_buffer_size );
+ basic_zlib_decompressor( const zlib_params& p,
+ int buffer_size = default_device_buffer_size );
+ zlib::ulong crc() { return this->filter().crc(); }
+ int total_out() { return this->filter().total_out(); }
+ bool eof() { return this->filter().eof(); }
+};
+NDNBOOST_IOSTREAMS_PIPABLE(basic_zlib_decompressor, 1)
+
+typedef basic_zlib_decompressor<> zlib_decompressor;
+
+//----------------------------------------------------------------------------//
+
+//------------------Implementation of zlib_allocator--------------------------//
+
+namespace detail {
+
+template<typename Alloc, typename Base>
+void* zlib_allocator<Alloc, Base>::allocate
+ (void* self, zlib::uint items, zlib::uint size)
+{
+ size_type len = items * size;
+ char* ptr =
+ static_cast<allocator_type*>(self)->allocate
+ (len + sizeof(size_type)
+ #if NDNBOOST_WORKAROUND(NDNBOOST_DINKUMWARE_STDLIB, == 1)
+ , (char*)0
+ #endif
+ );
+ *reinterpret_cast<size_type*>(ptr) = len;
+ return ptr + sizeof(size_type);
+}
+
+template<typename Alloc, typename Base>
+void zlib_allocator<Alloc, Base>::deallocate(void* self, void* address)
+{
+ char* ptr = reinterpret_cast<char*>(address) - sizeof(size_type);
+ size_type len = *reinterpret_cast<size_type*>(ptr) + sizeof(size_type);
+ static_cast<allocator_type*>(self)->deallocate(ptr, len);
+}
+
+//------------------Implementation of zlib_compressor_impl--------------------//
+
+template<typename Alloc>
+zlib_compressor_impl<Alloc>::zlib_compressor_impl(const zlib_params& p)
+{ init(p, true, static_cast<zlib_allocator<Alloc>&>(*this)); }
+
+template<typename Alloc>
+zlib_compressor_impl<Alloc>::~zlib_compressor_impl()
+{ reset(true, false); }
+
+template<typename Alloc>
+bool zlib_compressor_impl<Alloc>::filter
+ ( const char*& src_begin, const char* src_end,
+ char*& dest_begin, char* dest_end, bool flush )
+{
+ before(src_begin, src_end, dest_begin, dest_end);
+ int result = xdeflate(flush ? zlib::finish : zlib::no_flush);
+ after(src_begin, dest_begin, true);
+ zlib_error::check NDNBOOST_PREVENT_MACRO_SUBSTITUTION(result);
+ return result != zlib::stream_end;
+}
+
+template<typename Alloc>
+void zlib_compressor_impl<Alloc>::close() { reset(true, true); }
+
+//------------------Implementation of zlib_decompressor_impl------------------//
+
+template<typename Alloc>
+zlib_decompressor_impl<Alloc>::zlib_decompressor_impl(const zlib_params& p)
+ : eof_(false)
+{ init(p, false, static_cast<zlib_allocator<Alloc>&>(*this)); }
+
+template<typename Alloc>
+zlib_decompressor_impl<Alloc>::~zlib_decompressor_impl()
+{ reset(false, false); }
+
+template<typename Alloc>
+zlib_decompressor_impl<Alloc>::zlib_decompressor_impl(int window_bits)
+{
+ zlib_params p;
+ p.window_bits = window_bits;
+ init(p, false, static_cast<zlib_allocator<Alloc>&>(*this));
+}
+
+template<typename Alloc>
+bool zlib_decompressor_impl<Alloc>::filter
+ ( const char*& src_begin, const char* src_end,
+ char*& dest_begin, char* dest_end, bool /* flush */ )
+{
+ before(src_begin, src_end, dest_begin, dest_end);
+ int result = xinflate(zlib::sync_flush);
+ after(src_begin, dest_begin, false);
+ zlib_error::check NDNBOOST_PREVENT_MACRO_SUBSTITUTION(result);
+ return !(eof_ = result == zlib::stream_end);
+}
+
+template<typename Alloc>
+void zlib_decompressor_impl<Alloc>::close() {
+ eof_ = false;
+ reset(false, true);
+}
+
+} // End namespace detail.
+
+//------------------Implementation of zlib_decompressor-----------------------//
+
+template<typename Alloc>
+basic_zlib_compressor<Alloc>::basic_zlib_compressor
+ (const zlib_params& p, int buffer_size)
+ : base_type(buffer_size, p) { }
+
+//------------------Implementation of zlib_decompressor-----------------------//
+
+template<typename Alloc>
+basic_zlib_decompressor<Alloc>::basic_zlib_decompressor
+ (int window_bits, int buffer_size)
+ : base_type(buffer_size, window_bits) { }
+
+template<typename Alloc>
+basic_zlib_decompressor<Alloc>::basic_zlib_decompressor
+ (const zlib_params& p, int buffer_size)
+ : base_type(buffer_size, p) { }
+
+//----------------------------------------------------------------------------//
+
+} } // End namespaces iostreams, boost.
+
+#include <ndnboost/config/abi_suffix.hpp> // Pops abi_suffix.hpp pragmas.
+#ifdef NDNBOOST_MSVC
+# pragma warning(pop)
+#endif
+
+#endif // #ifndef NDNBOOST_IOSTREAMS_ZLIB_HPP_INCLUDED