Persist quality settings in the database.

[nageru] / futatabi / db.cpp

diff --git a/futatabi/db.cpp b/futatabi/db.cpp
index 39fd55776c40c9f094e84bfbbb4aed906b65fed6..13e3f6ee7174dc105df1de4136dff33c905e5bd0 100644 (file)
--- a/futatabi/db.cpp
+++ b/futatabi/db.cpp
@@ -18,6 +18,10 @@ DB::DB(const string &filename)
                CREATE TABLE IF NOT EXISTS state (state BLOB);
        )", nullptr, nullptr, nullptr);  // Ignore errors.
 
+       sqlite3_exec(db, R"(
+               CREATE TABLE IF NOT EXISTS settings (settings BLOB);
+       )", nullptr, nullptr, nullptr);  // Ignore errors.
+
        sqlite3_exec(db, R"(
                DROP TABLE file;
        )", nullptr, nullptr, nullptr);  // Ignore errors.
@@ -116,6 +120,83 @@ void DB::store_state(const StateProto &state)
        }
 }
 
+SettingsProto DB::get_settings()
+{
+       SettingsProto settings;
+
+       sqlite3_stmt *stmt;
+       int ret = sqlite3_prepare_v2(db, "SELECT settings FROM settings", -1, &stmt, 0);
+       if (ret != SQLITE_OK) {
+               fprintf(stderr, "SELECT prepare: %s\n", sqlite3_errmsg(db));
+               exit(1);
+       }
+
+       ret = sqlite3_step(stmt);
+       if (ret == SQLITE_ROW) {
+               bool ok = settings.ParseFromArray(sqlite3_column_blob(stmt, 0), sqlite3_column_bytes(stmt, 0));
+               if (!ok) {
+                       fprintf(stderr, "State in database is corrupted!\n");
+                       exit(1);
+               }
+       } else if (ret != SQLITE_DONE) {
+               fprintf(stderr, "SELECT step: %s\n", sqlite3_errmsg(db));
+               exit(1);
+       }
+
+       ret = sqlite3_finalize(stmt);
+       if (ret != SQLITE_OK) {
+               fprintf(stderr, "SELECT finalize: %s\n", sqlite3_errmsg(db));
+               exit(1);
+       }
+
+       return settings;
+}
+
+void DB::store_settings(const SettingsProto &settings)
+{
+       string serialized;
+       settings.SerializeToString(&serialized);
+
+       int ret = sqlite3_exec(db, "BEGIN", nullptr, nullptr, nullptr);
+       if (ret != SQLITE_OK) {
+               fprintf(stderr, "BEGIN: %s\n", sqlite3_errmsg(db));
+               exit(1);
+       }
+
+       ret = sqlite3_exec(db, "DELETE FROM settings", nullptr, nullptr, nullptr);
+       if (ret != SQLITE_OK) {
+               fprintf(stderr, "DELETE: %s\n", sqlite3_errmsg(db));
+               exit(1);
+       }
+
+       sqlite3_stmt *stmt;
+       ret = sqlite3_prepare_v2(db, "INSERT INTO settings VALUES (?)", -1, &stmt, 0);
+       if (ret != SQLITE_OK) {
+               fprintf(stderr, "INSERT prepare: %s\n", sqlite3_errmsg(db));
+               exit(1);
+       }
+
+       sqlite3_bind_blob(stmt, 1, serialized.data(), serialized.size(), SQLITE_STATIC);
+
+       ret = sqlite3_step(stmt);
+       if (ret == SQLITE_ROW) {
+               fprintf(stderr, "INSERT step: %s\n", sqlite3_errmsg(db));
+               exit(1);
+       }
+
+       ret = sqlite3_finalize(stmt);
+       if (ret != SQLITE_OK) {
+               fprintf(stderr, "INSERT finalize: %s\n", sqlite3_errmsg(db));
+               exit(1);
+       }
+
+       ret = sqlite3_exec(db, "COMMIT", nullptr, nullptr, nullptr);
+       if (ret != SQLITE_OK) {
+               fprintf(stderr, "COMMIT: %s\n", sqlite3_errmsg(db));
+               exit(1);
+       }
+}
+
 vector<DB::FrameOnDiskAndStreamIdx> DB::load_frame_file(const string &filename, size_t size, unsigned filename_idx)
 {
        FileContentsProto file_contents;