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third_party/sqlite/src/src/test_loadext.c

Index: third_party/sqlite/src/src/test_loadext.c
diff --git a/third_party/sqlite/src/src/test_loadext.c b/third_party/sqlite/src/src/test_loadext.c
new file mode 100644
index 0000000000000000000000000000000000000000..1137e3a9aae92906b8289f6c3daa61f0d070f55a
--- /dev/null
+++ b/third_party/sqlite/src/src/test_loadext.c
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+/*
+** 2006 June 14
+**
+** 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.
+**
+*************************************************************************
+** Test extension for testing the sqlite3_load_extension() function.
+*/
+#include <string.h>
+#include "sqlite3ext.h"
+SQLITE_EXTENSION_INIT1
+
+/*
+** The half() SQL function returns half of its input value.
+*/
+static void halfFunc(
+  sqlite3_context *context,
+  int argc,
+  sqlite3_value **argv
+){
+  sqlite3_result_double(context, 0.5*sqlite3_value_double(argv[0]));
+}
+
+/*
+** SQL functions to call the sqlite3_status function and return results.
+*/
+static void statusFunc(
+  sqlite3_context *context,
+  int argc,
+  sqlite3_value **argv
+){
+  int op, mx, cur, resetFlag, rc;
+  if( sqlite3_value_type(argv[0])==SQLITE_INTEGER ){
+    op = sqlite3_value_int(argv[0]);
+  }else if( sqlite3_value_type(argv[0])==SQLITE_TEXT ){
+    int i;
+    const char *zName;
+    static const struct {
+      const char *zName;
+      int op;
+    } aOp[] = {
+      { "MEMORY_USED",         SQLITE_STATUS_MEMORY_USED         },
+      { "PAGECACHE_USED",      SQLITE_STATUS_PAGECACHE_USED      },
+      { "PAGECACHE_OVERFLOW",  SQLITE_STATUS_PAGECACHE_OVERFLOW  },
+      { "SCRATCH_USED",        SQLITE_STATUS_SCRATCH_USED        },
+      { "SCRATCH_OVERFLOW",    SQLITE_STATUS_SCRATCH_OVERFLOW    },
+      { "MALLOC_SIZE",         SQLITE_STATUS_MALLOC_SIZE         },
+    };
+    int nOp = sizeof(aOp)/sizeof(aOp[0]);
+    zName = (const char*)sqlite3_value_text(argv[0]);
+    for(i=0; i<nOp; i++){
+      if( strcmp(aOp[i].zName, zName)==0 ){
+        op = aOp[i].op;
+        break;
+      }
+    }
+    if( i>=nOp ){
+      char *zMsg = sqlite3_mprintf("unknown status property: %s", zName);
+      sqlite3_result_error(context, zMsg, -1);
+      sqlite3_free(zMsg);
+      return;
+    }
+  }else{
+    sqlite3_result_error(context, "unknown status type", -1);
+    return;
+  }
+  if( argc==2 ){
+    resetFlag = sqlite3_value_int(argv[1]);
+  }else{
+    resetFlag = 0;
+  }
+  rc = sqlite3_status(op, &cur, &mx, resetFlag);
+  if( rc!=SQLITE_OK ){
+    char *zMsg = sqlite3_mprintf("sqlite3_status(%d,...) returns %d", op, rc);
+    sqlite3_result_error(context, zMsg, -1);
+    sqlite3_free(zMsg);
+    return;
+  } 
+  if( argc==2 ){
+    sqlite3_result_int(context, mx);
+  }else{
+    sqlite3_result_int(context, cur);
+  }
+}
+
+/*
+** Extension load function.
+*/
+int testloadext_init(
+  sqlite3 *db, 
+  char **pzErrMsg, 
+  const sqlite3_api_routines *pApi
+){
+  int nErr = 0;
+  SQLITE_EXTENSION_INIT2(pApi);
+  nErr |= sqlite3_create_function(db, "half", 1, SQLITE_ANY, 0, halfFunc, 0, 0);
+  nErr |= sqlite3_create_function(db, "sqlite3_status", 1, SQLITE_ANY, 0,
+                          statusFunc, 0, 0);
+  nErr |= sqlite3_create_function(db, "sqlite3_status", 2, SQLITE_ANY, 0,
+                          statusFunc, 0, 0);
+  return nErr ? SQLITE_ERROR : SQLITE_OK;
+}
+
+/*
+** Another extension entry point. This one always fails.
+*/
+int testbrokenext_init(
+  sqlite3 *db, 
+  char **pzErrMsg, 
+  const sqlite3_api_routines *pApi
+){
+  char *zErr;
+  SQLITE_EXTENSION_INIT2(pApi);
+  zErr = sqlite3_mprintf("broken!");
+  *pzErrMsg = zErr;
+  return 1;
+}