abi_from_hex.patch

diff --git a/tools/CMakeLists.txt b/tools/CMakeLists.txt
index 42a6e37..01e0c25 100644
--- a/tools/CMakeLists.txt
+++ b/tools/CMakeLists.txt
@@ -14,3 +14,7 @@ install( FILES ${CMAKE_CURRENT_BINARY_DIR}/eosiocpp DESTINATION ${CMAKE_INSTALL_
 add_executable( print_floats print_floats.cpp )
 target_include_directories( print_floats PRIVATE ${Boost_INCLUDE_DIR} )
 target_link_libraries( print_floats PRIVATE ${Boost_LIBRARIES} )
+
+add_executable( abi_from_hex abi_from_hex.cpp )
+target_include_directories( abi_from_hex PRIVATE ${Boost_INCLUDE_DIR} )
+target_link_libraries( abi_from_hex PRIVATE eosio_chain fc ${Boost_LIBRARIES} )
\ No newline at end of file
diff --git a/tools/abi_from_hex.cpp b/tools/abi_from_hex.cpp
new file mode 100644
index 0000000..383811a
--- /dev/null
+++ b/tools/abi_from_hex.cpp
@@ -0,0 +1,58 @@
+/**
+ *  @file
+ *  @copyright defined in eos/LICENSE.txt
+ */
+
+#include <eosio/chain/asset.hpp>
+#include <eosio/chain/block_log.hpp>
+#include <eosio/chain/transaction.hpp>
+#include <eosio/chain/block_header_state.hpp>
+#include <eosio/chain/abi_serializer.hpp>
+#include <eosio/chain/authority.hpp>
+#include <fc/io/raw.hpp>
+#include <fc/io/json.hpp>
+#include <fc/crypto/hex.hpp>
+#include <fc/optional.hpp>
+#include <fc/reflect/reflect.hpp>
+#include <fc/filesystem.hpp>
+
+using namespace eosio;
+using namespace eosio::chain;
+using namespace chainbase;
+using namespace fc;
+using namespace std;
+
+#include <boost/program_options.hpp>
+
+namespace po = boost::program_options;
+
+int main(int argc, const char **argv) {
+
+   try {
+
+   std::istream *in;
+   std::ifstream ifn;
+
+   if ( argc == 1 ) {
+      in=&cin;
+   } else {
+      ifn.open(argv[1]);
+      in=&ifn;
+   }
+
+   std::stringstream buffer;
+   buffer << in->rdbuf();
+
+   auto str_hex_abi = buffer.str();
+   bytes bin_abi(str_hex_abi.size()/2);
+
+   from_hex(buffer.str(), bin_abi.data(), bin_abi.size());
+   auto abi = fc::raw::unpack<abi_def>(bin_abi.data(), bin_abi.size());
+
+   cout << fc::json::to_string(abi) << std::endl;
+
+   return 0;
+
+   } FC_CAPTURE_AND_LOG(());
+   return 1;
+}