mirror of https://github.com/stella-emu/stella.git
102 lines
3.0 KiB
C++
102 lines
3.0 KiB
C++
//============================================================================
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//
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// SSSS tt lll lll
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// SS SS tt ll ll
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// SS tttttt eeee ll ll aaaa
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// SSSS tt ee ee ll ll aa
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// SS tt eeeeee ll ll aaaaa -- "An Atari 2600 VCS Emulator"
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// SS SS tt ee ll ll aa aa
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// SSSS ttt eeeee llll llll aaaaa
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//
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// Copyright (c) 1995-2019 by Bradford W. Mott, Stephen Anthony
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// and the Stella Team
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//
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// See the file "License.txt" for information on usage and redistribution of
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// this file, and for a DISCLAIMER OF ALL WARRANTIES.
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//============================================================================
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#include <cstdio>
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#include "SqliteDatabase.hxx"
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#include "Logger.hxx"
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#include "SqliteError.hxx"
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#ifdef BSPF_WINDOWS
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#define SEPARATOR "\""
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#else
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#define SEPARATOR "/"
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#endif
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// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
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SqliteDatabase::SqliteDatabase(
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const string& databaseDirectory,
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const string& databaseName
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) : myDatabaseFile(databaseDirectory + SEPARATOR + databaseName + ".sqlite3"),
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myHandle(nullptr)
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{}
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// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
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SqliteDatabase::~SqliteDatabase()
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{
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if (myHandle) sqlite3_close_v2(myHandle);
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}
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// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
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void SqliteDatabase::initialize()
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{
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if (myHandle) return;
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bool dbInitialized = false;
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for (int tries = 1; tries < 3 && !dbInitialized; tries++) {
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dbInitialized = (sqlite3_open(myDatabaseFile.c_str(), &myHandle) == SQLITE_OK);
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if (dbInitialized)
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dbInitialized = sqlite3_exec(myHandle, "PRAGMA schema_version", nullptr, nullptr, nullptr) == SQLITE_OK;
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if (!dbInitialized && tries == 1) {
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Logger::log("sqlite DB " + myDatabaseFile + " seems to be corrupt, removing and retrying...", 1);
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remove(myDatabaseFile.c_str());
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if (myHandle) sqlite3_close_v2(myHandle);
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}
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}
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if (!dbInitialized) {
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if (myHandle) {
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string emsg = sqlite3_errmsg(myHandle);
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sqlite3_close_v2(myHandle);
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myHandle = nullptr;
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throw SqliteError(emsg);
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}
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throw SqliteError("unable to initialize sqlite DB for unknown reason");
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};
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Logger::log("successfully opened " + myDatabaseFile, 2);
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exec("PRAGMA journal_mode=WAL");
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switch (sqlite3_wal_checkpoint_v2(myHandle, nullptr, SQLITE_CHECKPOINT_TRUNCATE, nullptr, nullptr)) {
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case SQLITE_OK:
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break;
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case SQLITE_MISUSE:
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Logger::log("failed to checkpoint WAL on " + myDatabaseFile + " - WAL probably unavailable", 1);
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break;
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default:
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Logger::log("failed to checkpoint WAL on " + myDatabaseFile + " : " + sqlite3_errmsg(myHandle), 1);
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break;
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}
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}
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// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
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void SqliteDatabase::exec(const string& sql) const
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{
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if (sqlite3_exec(myHandle, sql.c_str(), nullptr, nullptr, nullptr) != SQLITE_OK)
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throw SqliteError(myHandle);
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}
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