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-rw-r--r--src/database/database.cpp1
-rw-r--r--src/database/database.hpp35
2 files changed, 36 insertions, 0 deletions
diff --git a/src/database/database.cpp b/src/database/database.cpp
index 266b17e..0f2349d 100644
--- a/src/database/database.cpp
+++ b/src/database/database.cpp
@@ -14,6 +14,7 @@ Database::GlobalOptionsTable Database::global_options("GlobalOptions_");
Database::IrcServerOptionsTable Database::irc_server_options("IrcServerOptions_");
Database::IrcChannelOptionsTable Database::irc_channel_options("IrcChannelOptions_");
Database::RosterTable Database::roster("roster");
+std::map<Database::CacheKey, Database::EncodingIn::real_type> Database::encoding_in_cache{};
void Database::open(const std::string& filename)
diff --git a/src/database/database.hpp b/src/database/database.hpp
index c00c938..f4b2ecd 100644
--- a/src/database/database.hpp
+++ b/src/database/database.hpp
@@ -13,6 +13,7 @@
#include <string>
#include <memory>
+#include <map>
class Database
@@ -140,7 +141,41 @@ class Database
static RosterTable roster;
static sqlite3* db;
+ /**
+ * Some caches, to avoid doing very frequent query requests for a few options.
+ */
+ using CacheKey = std::tuple<std::string, std::string, std::string>;
+
+ static EncodingIn::real_type get_encoding_in(const std::string& owner,
+ const std::string& server,
+ const std::string& channel)
+ {
+ CacheKey channel_key{owner, server, channel};
+ auto it = Database::encoding_in_cache.find(channel_key);
+ if (it == Database::encoding_in_cache.end())
+ {
+ auto options = Database::get_irc_channel_options_with_server_default(owner, server, channel);
+ EncodingIn::real_type result = options.col<Database::EncodingIn>();
+ if (result.empty())
+ result = "ISO-8859-1";
+ it = Database::encoding_in_cache.insert(std::make_pair(channel_key, result)).first;
+ }
+ return it->second;
+ }
+ static void invalidate_encoding_in_cache(const std::string& owner,
+ const std::string& server,
+ const std::string& channel)
+ {
+ CacheKey channel_key{owner, server, channel};
+ Database::encoding_in_cache.erase(channel_key);
+ }
+ static void invalidate_encoding_in_cache()
+ {
+ Database::encoding_in_cache.clear();
+ }
+
private:
static std::string gen_uuid();
+ static std::map<CacheKey, EncodingIn::real_type> encoding_in_cache;
};
#endif /* USE_DATABASE */