From ba6ff9a6f70139594362b4b4a6b816707bb165c8 Mon Sep 17 00:00:00 2001
From: Jim Posen <jim.posen@gmail.com>
Date: Mon, 27 Aug 2018 15:42:35 -0700
Subject: blockfilter: Functions to translate filter types to/from names.

---
 src/blockfilter.cpp | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)

(limited to 'src/blockfilter.cpp')

diff --git a/src/blockfilter.cpp b/src/blockfilter.cpp
index e15213c552..b96956212b 100644
--- a/src/blockfilter.cpp
+++ b/src/blockfilter.cpp
@@ -15,6 +15,10 @@ static constexpr int GCS_SER_TYPE = SER_NETWORK;
 /// Protocol version used to serialize parameters in GCS filter encoding.
 static constexpr int GCS_SER_VERSION = 0;
 
+static const std::map<BlockFilterType, std::string> g_filter_types = {
+    {BlockFilterType::BASIC, "basic"},
+};
+
 template <typename OStream>
 static void GolombRiceEncode(BitStreamWriter<OStream>& bitwriter, uint8_t P, uint64_t x)
 {
@@ -197,6 +201,23 @@ bool GCSFilter::MatchAny(const ElementSet& elements) const
     return MatchInternal(queries.data(), queries.size());
 }
 
+const std::string& BlockFilterTypeName(BlockFilterType filter_type)
+{
+    static std::string unknown_retval = "";
+    auto it = g_filter_types.find(filter_type);
+    return it != g_filter_types.end() ? it->second : unknown_retval;
+}
+
+bool BlockFilterTypeByName(const std::string& name, BlockFilterType& filter_type) {
+    for (const auto& entry : g_filter_types) {
+        if (entry.second == name) {
+            filter_type = entry.first;
+            return true;
+        }
+    }
+    return false;
+}
+
 static GCSFilter::ElementSet BasicFilterElements(const CBlock& block,
                                                  const CBlockUndo& block_undo)
 {
-- 
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