utils: bugfix & refactoring

1 files changed, 55 insertions, 0 deletions

diff --git a/utils/data_parsers.hpp b/utils/data_parsers.hpp
new file mode 100644
index 0000000..08486fa
--- /dev/null
+++ b/utils/data_parsers.hpp
@@ -0,0 +1,55 @@
+/**
+ * \file
+ * \author Egor Tensin <Egor.Tensin@gmail.com>
+ * \date 2015
+ * \copyright This file is licensed under the terms of the MIT License.
+ *            See LICENSE.txt for details.
+ */
+
+#pragma once
+
+#include <aesnixx/all.hpp>
+
+#include <boost/algorithm/string.hpp>
+#include <boost/program_options.hpp>
+
+#include <istream>
+#include <string>
+
+static std::istream& operator>>(std::istream& is, aesni::Mode& dest)
+{
+    std::string src;
+    is >> src;
+
+    if (boost::iequals(src, "ecb"))
+        dest = AESNI_ECB;
+    else if (boost::iequals(src, "cbc"))
+        dest = AESNI_CBC;
+    else if (boost::iequals(src, "cfb"))
+        dest = AESNI_CFB;
+    else if (boost::iequals(src, "ofb"))
+        dest = AESNI_OFB;
+    else if (boost::iequals(src, "ctr"))
+        dest = AESNI_CTR;
+    else
+        throw boost::program_options::validation_error(boost::program_options::validation_error::invalid_option_value, "mode", src);
+
+    return is;
+}
+
+static std::istream& operator>>(std::istream& is, aesni::Algorithm& dest)
+{
+    std::string src;
+    is >> src;
+
+    if (boost::iequals(src, "aes128"))
+        dest = AESNI_AES128;
+    else if (boost::iequals(src, "aes192"))
+        dest = AESNI_AES192;
+    else if (boost::iequals(src, "aes256"))
+        dest = AESNI_AES256;
+    else
+        throw boost::program_options::validation_error(boost::program_options::validation_error::invalid_option_value, "algorithm", src);
+
+    return is;
+}