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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-05-05 17:28:19 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-05-05 17:28:19 +0000
commit18657a960e125336f704ea058e25c27bd3900dcb (patch)
tree17b438b680ed45a996d7b59951e6aa34023783f2 /ext/misc/noop.c
parentInitial commit. (diff)
downloadsqlite3-upstream.tar.xz
sqlite3-upstream.zip
Adding upstream version 3.40.1.upstream/3.40.1upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'ext/misc/noop.c')
-rw-r--r--ext/misc/noop.c68
1 files changed, 68 insertions, 0 deletions
diff --git a/ext/misc/noop.c b/ext/misc/noop.c
new file mode 100644
index 0000000..d3a5867
--- /dev/null
+++ b/ext/misc/noop.c
@@ -0,0 +1,68 @@
+/*
+** 2020-01-08
+**
+** The author disclaims copyright to this source code. In place of
+** a legal notice, here is a blessing:
+**
+** May you do good and not evil.
+** May you find forgiveness for yourself and forgive others.
+** May you share freely, never taking more than you give.
+**
+******************************************************************************
+**
+** This SQLite extension implements a noop() function used for testing.
+**
+** Variants:
+**
+** noop(X) The default. Deterministic.
+** noop_i(X) Deterministic and innocuous.
+** noop_do(X) Deterministic and direct-only.
+** noop_nd(X) Non-deterministic.
+*/
+#include "sqlite3ext.h"
+SQLITE_EXTENSION_INIT1
+#include <assert.h>
+#include <string.h>
+
+/*
+** Implementation of the noop() function.
+**
+** The function returns its argument, unchanged.
+*/
+static void noopfunc(
+ sqlite3_context *context,
+ int argc,
+ sqlite3_value **argv
+){
+ assert( argc==1 );
+ sqlite3_result_value(context, argv[0]);
+}
+
+#ifdef _WIN32
+__declspec(dllexport)
+#endif
+int sqlite3_noop_init(
+ sqlite3 *db,
+ char **pzErrMsg,
+ const sqlite3_api_routines *pApi
+){
+ int rc = SQLITE_OK;
+ SQLITE_EXTENSION_INIT2(pApi);
+ (void)pzErrMsg; /* Unused parameter */
+ rc = sqlite3_create_function(db, "noop", 1,
+ SQLITE_UTF8 | SQLITE_DETERMINISTIC,
+ 0, noopfunc, 0, 0);
+ if( rc ) return rc;
+ rc = sqlite3_create_function(db, "noop_i", 1,
+ SQLITE_UTF8 | SQLITE_DETERMINISTIC | SQLITE_INNOCUOUS,
+ 0, noopfunc, 0, 0);
+ if( rc ) return rc;
+ rc = sqlite3_create_function(db, "noop_do", 1,
+ SQLITE_UTF8 | SQLITE_DETERMINISTIC | SQLITE_DIRECTONLY,
+ 0, noopfunc, 0, 0);
+ if( rc ) return rc;
+ rc = sqlite3_create_function(db, "noop_nd", 1,
+ SQLITE_UTF8,
+ 0, noopfunc, 0, 0);
+ return rc;
+}