/*
* This file was automatically generated by {{ script }} on {{ date }}
*
* All manual edits to this file will be lost. Edit the script then regenerate this source file.
*
* Botan is released under the Simplified BSD License (see license.txt)
*/

#include <botan/internal/oid_map.h>

#include <initializer_list>
#include <unordered_map>

namespace Botan {

namespace {

// The hash can collide so we must verify the actual value matches before returning
std::optional<std::string_view> if_match(const OID& oid, std::initializer_list<uint32_t> val, std::string_view name) {
   if(oid.matches(val)) {
      return name;
   } else {
      return {};
   }
}

std::optional<OID> if_match(std::string_view req, std::string_view actual, std::initializer_list<uint32_t> oid) {
   if(req == actual) {
      return OID(oid);
   } else {
      return {};
   }
}

uint32_t hash_oid_name(std::string_view s) {
   uint64_t hash = 0x8188B31879A4879A;

   for(const char c : s) {
      hash *= 251;
      hash += c;
   }

   return static_cast<uint32_t>(hash % 805289);
}

}  // namespace

//static
std::optional<std::string_view> OID_Map::lookup_static_oid(const OID& oid) {
   const uint32_t hc = static_cast<uint32_t>(oid.hash_code() % 858701);

   switch(hc) {
{%- for match in static_oid_data|sort(attribute="oid_hash") %}
      case 0x{{ "%05X" % (match.oid_hash) }}:
         return if_match(oid, {{ match.oid }}, "{{match.name}}");
{%- endfor %}
      default:
         return {};
   }
}

//static
std::optional<OID> OID_Map::lookup_static_oid_name(std::string_view req) {
   const uint32_t hc = hash_oid_name(req);

   switch(hc) {
{%- for match in static_oid_data|sort(attribute="name_hash") %}
      case 0x{{ "%05X" % (match.name_hash) }}:
         return if_match(req, "{{match.name}}", {{ match.oid }});
{%- endfor %}
      default:
         return {};
   }
}

std::unordered_map<OID, std::string> OID_Map::load_oid2str_map() {
   return {
{%- for oid in dup_oids %}
      {OID{{ oid.oid }}, "{{ oid.name }}"},
{%- endfor %}
   };
}

std::unordered_map<std::string, OID> OID_Map::load_str2oid_map() {
   return {
{%- for oid in aliases %}
      {"{{ oid.name }}", OID{{ oid.oid }}},
{%- endfor %}
   };
}

}  // namespace Botan