aboutsummaryrefslogtreecommitdiffstats
path: root/src/lib/sqlite
diff options
context:
space:
mode:
Diffstat (limited to '')
-rw-r--r--src/lib/sqlite/Domain.cxx24
-rw-r--r--src/lib/sqlite/Domain.hxx27
-rw-r--r--src/lib/sqlite/Util.hxx188
3 files changed, 239 insertions, 0 deletions
diff --git a/src/lib/sqlite/Domain.cxx b/src/lib/sqlite/Domain.cxx
new file mode 100644
index 000000000..82c99d718
--- /dev/null
+++ b/src/lib/sqlite/Domain.cxx
@@ -0,0 +1,24 @@
+/*
+ * Copyright (C) 2003-2014 The Music Player Daemon Project
+ * http://www.musicpd.org
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#include "config.h"
+#include "Domain.hxx"
+#include "util/Domain.hxx"
+
+const Domain sqlite_domain("sqlite");
diff --git a/src/lib/sqlite/Domain.hxx b/src/lib/sqlite/Domain.hxx
new file mode 100644
index 000000000..12d8ccf72
--- /dev/null
+++ b/src/lib/sqlite/Domain.hxx
@@ -0,0 +1,27 @@
+/*
+ * Copyright (C) 2003-2014 The Music Player Daemon Project
+ * http://www.musicpd.org
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#ifndef MPD_SQLITE_DOMAIN_HXX
+#define MPD_SQLITE_DOMAIN_HXX
+
+class Domain;
+
+extern const Domain sqlite_domain;
+
+#endif
diff --git a/src/lib/sqlite/Util.hxx b/src/lib/sqlite/Util.hxx
new file mode 100644
index 000000000..da74d1c3c
--- /dev/null
+++ b/src/lib/sqlite/Util.hxx
@@ -0,0 +1,188 @@
+/*
+ * Copyright (C) 2003-2014 The Music Player Daemon Project
+ * http://www.musicpd.org
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#ifndef MPD_SQLITE_UTIL_HXX
+#define MPD_SQLITE_UTIL_HXX
+
+#include "Domain.hxx"
+#include "util/Error.hxx"
+
+#include <sqlite3.h>
+
+#include <assert.h>
+
+static void
+SetError(Error &error, sqlite3 *db, int code, const char *msg)
+{
+ error.Format(sqlite_domain, code, "%s: %s",
+ msg, sqlite3_errmsg(db));
+}
+
+static void
+SetError(Error &error, sqlite3_stmt *stmt, int code, const char *msg)
+{
+ SetError(error, sqlite3_db_handle(stmt), code, msg);
+}
+
+static bool
+Bind(sqlite3_stmt *stmt, unsigned i, const char *value, Error &error)
+{
+ int result = sqlite3_bind_text(stmt, i, value, -1, nullptr);
+ if (result != SQLITE_OK) {
+ SetError(error, stmt, result, "sqlite3_bind_text() failed");
+ return false;
+ }
+
+ return true;
+}
+
+template<typename... Args>
+static bool
+BindAll2(gcc_unused Error &error, gcc_unused sqlite3_stmt *stmt,
+ gcc_unused unsigned i)
+{
+ assert(int(i - 1) == sqlite3_bind_parameter_count(stmt));
+
+ return true;
+}
+
+template<typename... Args>
+static bool
+BindAll2(Error &error, sqlite3_stmt *stmt, unsigned i,
+ const char *value, Args&&... args)
+{
+ return Bind(stmt, i, value, error) &&
+ BindAll2(error, stmt, i + 1, std::forward<Args>(args)...);
+}
+
+template<typename... Args>
+static bool
+BindAll(Error &error, sqlite3_stmt *stmt, Args&&... args)
+{
+ assert(int(sizeof...(args)) == sqlite3_bind_parameter_count(stmt));
+
+ return BindAll2(error, stmt, 1, std::forward<Args>(args)...);
+}
+
+/**
+ * Wrapper for BindAll() that returns the specified sqlite3_stmt* on
+ * success and nullptr on error.
+ */
+template<typename... Args>
+static sqlite3_stmt *
+BindAllOrNull(Error &error, sqlite3_stmt *stmt, Args&&... args)
+{
+ return BindAll(error, stmt, std::forward<Args>(args)...)
+ ? stmt
+ : nullptr;
+}
+
+/**
+ * Call sqlite3_stmt() repepatedly until something other than
+ * SQLITE_BUSY is returned.
+ */
+static int
+ExecuteBusy(sqlite3_stmt *stmt)
+{
+ int result;
+ do {
+ result = sqlite3_step(stmt);
+ } while (result == SQLITE_BUSY);
+
+ return result;
+}
+
+/**
+ * Wrapper for ExecuteBusy() that returns true on SQLITE_ROW.
+ */
+static bool
+ExecuteRow(sqlite3_stmt *stmt, Error &error)
+{
+ int result = ExecuteBusy(stmt);
+ if (result == SQLITE_ROW)
+ return true;
+
+ if (result != SQLITE_DONE)
+ SetError(error, stmt, result, "sqlite3_step() failed");
+
+ return false;
+}
+
+/**
+ * Wrapper for ExecuteBusy() that interprets everything other than
+ * SQLITE_DONE as error.
+ */
+static bool
+ExecuteCommand(sqlite3_stmt *stmt, Error &error)
+{
+ int result = ExecuteBusy(stmt);
+ if (result != SQLITE_DONE) {
+ SetError(error, stmt, result, "sqlite3_step() failed");
+ return false;
+ }
+
+ return true;
+}
+
+/**
+ * Wrapper for ExecuteCommand() that returns the number of rows
+ * modified via sqlite3_changes(). Returns -1 on error.
+ */
+static inline int
+ExecuteChanges(sqlite3_stmt *stmt, Error &error)
+{
+ if (!ExecuteCommand(stmt, error))
+ return -1;
+
+ return sqlite3_changes(sqlite3_db_handle(stmt));
+}
+
+/**
+ * Wrapper for ExecuteChanges() that returns true if at least one row
+ * was modified. Returns false if nothing was modified or if an error
+ * occurred.
+ */
+static inline bool
+ExecuteModified(sqlite3_stmt *stmt, Error &error)
+{
+ return ExecuteChanges(stmt, error) > 0;
+}
+
+template<typename F>
+static inline bool
+ExecuteForEach(sqlite3_stmt *stmt, Error &error, F &&f)
+{
+ while (true) {
+ int result = ExecuteBusy(stmt);
+ switch (result) {
+ case SQLITE_ROW:
+ f();
+ break;
+
+ case SQLITE_DONE:
+ return true;
+
+ default:
+ SetError(error, stmt, result, "sqlite3_step() failed");
+ return false;
+ }
+ }
+}
+
+#endif
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-12 21:11:25 +0000