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diff --git a/vendor/github.com/mattn/go-sqlite3/sqlite3.go b/vendor/github.com/mattn/go-sqlite3/sqlite3.go
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+++ b/vendor/github.com/mattn/go-sqlite3/sqlite3.go
@@ -0,0 +1,2189 @@
+// Copyright (C) 2019 Yasuhiro Matsumoto <mattn.jp@gmail.com>.
+// Copyright (C) 2018 G.J.R. Timmer <gjr.timmer@gmail.com>.
+//
+// Use of this source code is governed by an MIT-style
+// license that can be found in the LICENSE file.
+
+// +build cgo
+
+package sqlite3
+
+/*
+#cgo CFLAGS: -std=gnu99
+#cgo CFLAGS: -DSQLITE_ENABLE_RTREE
+#cgo CFLAGS: -DSQLITE_THREADSAFE=1
+#cgo CFLAGS: -DHAVE_USLEEP=1
+#cgo CFLAGS: -DSQLITE_ENABLE_FTS3
+#cgo CFLAGS: -DSQLITE_ENABLE_FTS3_PARENTHESIS
+#cgo CFLAGS: -DSQLITE_TRACE_SIZE_LIMIT=15
+#cgo CFLAGS: -DSQLITE_OMIT_DEPRECATED
+#cgo CFLAGS: -DSQLITE_DEFAULT_WAL_SYNCHRONOUS=1
+#cgo CFLAGS: -DSQLITE_ENABLE_UPDATE_DELETE_LIMIT
+#cgo CFLAGS: -Wno-deprecated-declarations
+#cgo linux,!android CFLAGS: -DHAVE_PREAD64=1 -DHAVE_PWRITE64=1
+#cgo openbsd CFLAGS: -I/usr/local/include
+#cgo openbsd LDFLAGS: -L/usr/local/lib
+#ifndef USE_LIBSQLITE3
+#include "sqlite3-binding.h"
+#else
+#include <sqlite3.h>
+#endif
+#include <stdlib.h>
+#include <string.h>
+
+#ifdef __CYGWIN__
+# include <errno.h>
+#endif
+
+#ifndef SQLITE_OPEN_READWRITE
+# define SQLITE_OPEN_READWRITE 0
+#endif
+
+#ifndef SQLITE_OPEN_FULLMUTEX
+# define SQLITE_OPEN_FULLMUTEX 0
+#endif
+
+#ifndef SQLITE_DETERMINISTIC
+# define SQLITE_DETERMINISTIC 0
+#endif
+
+static int
+_sqlite3_open_v2(const char *filename, sqlite3 **ppDb, int flags, const char *zVfs) {
+#ifdef SQLITE_OPEN_URI
+ return sqlite3_open_v2(filename, ppDb, flags | SQLITE_OPEN_URI, zVfs);
+#else
+ return sqlite3_open_v2(filename, ppDb, flags, zVfs);
+#endif
+}
+
+static int
+_sqlite3_bind_text(sqlite3_stmt *stmt, int n, char *p, int np) {
+ return sqlite3_bind_text(stmt, n, p, np, SQLITE_TRANSIENT);
+}
+
+static int
+_sqlite3_bind_blob(sqlite3_stmt *stmt, int n, void *p, int np) {
+ return sqlite3_bind_blob(stmt, n, p, np, SQLITE_TRANSIENT);
+}
+
+#include <stdio.h>
+#include <stdint.h>
+
+static int
+_sqlite3_exec(sqlite3* db, const char* pcmd, long long* rowid, long long* changes)
+{
+ int rv = sqlite3_exec(db, pcmd, 0, 0, 0);
+ *rowid = (long long) sqlite3_last_insert_rowid(db);
+ *changes = (long long) sqlite3_changes(db);
+ return rv;
+}
+
+#ifdef SQLITE_ENABLE_UNLOCK_NOTIFY
+extern int _sqlite3_step_blocking(sqlite3_stmt *stmt);
+extern int _sqlite3_step_row_blocking(sqlite3_stmt* stmt, long long* rowid, long long* changes);
+extern int _sqlite3_prepare_v2_blocking(sqlite3 *db, const char *zSql, int nBytes, sqlite3_stmt **ppStmt, const char **pzTail);
+
+static int
+_sqlite3_step_internal(sqlite3_stmt *stmt)
+{
+ return _sqlite3_step_blocking(stmt);
+}
+
+static int
+_sqlite3_step_row_internal(sqlite3_stmt* stmt, long long* rowid, long long* changes)
+{
+ return _sqlite3_step_row_blocking(stmt, rowid, changes);
+}
+
+static int
+_sqlite3_prepare_v2_internal(sqlite3 *db, const char *zSql, int nBytes, sqlite3_stmt **ppStmt, const char **pzTail)
+{
+ return _sqlite3_prepare_v2_blocking(db, zSql, nBytes, ppStmt, pzTail);
+}
+
+#else
+static int
+_sqlite3_step_internal(sqlite3_stmt *stmt)
+{
+ return sqlite3_step(stmt);
+}
+
+static int
+_sqlite3_step_row_internal(sqlite3_stmt* stmt, long long* rowid, long long* changes)
+{
+ int rv = sqlite3_step(stmt);
+ sqlite3* db = sqlite3_db_handle(stmt);
+ *rowid = (long long) sqlite3_last_insert_rowid(db);
+ *changes = (long long) sqlite3_changes(db);
+ return rv;
+}
+
+static int
+_sqlite3_prepare_v2_internal(sqlite3 *db, const char *zSql, int nBytes, sqlite3_stmt **ppStmt, const char **pzTail)
+{
+ return sqlite3_prepare_v2(db, zSql, nBytes, ppStmt, pzTail);
+}
+#endif
+
+void _sqlite3_result_text(sqlite3_context* ctx, const char* s) {
+ sqlite3_result_text(ctx, s, -1, &free);
+}
+
+void _sqlite3_result_blob(sqlite3_context* ctx, const void* b, int l) {
+ sqlite3_result_blob(ctx, b, l, SQLITE_TRANSIENT);
+}
+
+
+int _sqlite3_create_function(
+ sqlite3 *db,
+ const char *zFunctionName,
+ int nArg,
+ int eTextRep,
+ uintptr_t pApp,
+ void (*xFunc)(sqlite3_context*,int,sqlite3_value**),
+ void (*xStep)(sqlite3_context*,int,sqlite3_value**),
+ void (*xFinal)(sqlite3_context*)
+) {
+ return sqlite3_create_function(db, zFunctionName, nArg, eTextRep, (void*) pApp, xFunc, xStep, xFinal);
+}
+
+void callbackTrampoline(sqlite3_context*, int, sqlite3_value**);
+void stepTrampoline(sqlite3_context*, int, sqlite3_value**);
+void doneTrampoline(sqlite3_context*);
+
+int compareTrampoline(void*, int, char*, int, char*);
+int commitHookTrampoline(void*);
+void rollbackHookTrampoline(void*);
+void updateHookTrampoline(void*, int, char*, char*, sqlite3_int64);
+
+int authorizerTrampoline(void*, int, char*, char*, char*, char*);
+
+#ifdef SQLITE_LIMIT_WORKER_THREADS
+# define _SQLITE_HAS_LIMIT
+# define SQLITE_LIMIT_LENGTH 0
+# define SQLITE_LIMIT_SQL_LENGTH 1
+# define SQLITE_LIMIT_COLUMN 2
+# define SQLITE_LIMIT_EXPR_DEPTH 3
+# define SQLITE_LIMIT_COMPOUND_SELECT 4
+# define SQLITE_LIMIT_VDBE_OP 5
+# define SQLITE_LIMIT_FUNCTION_ARG 6
+# define SQLITE_LIMIT_ATTACHED 7
+# define SQLITE_LIMIT_LIKE_PATTERN_LENGTH 8
+# define SQLITE_LIMIT_VARIABLE_NUMBER 9
+# define SQLITE_LIMIT_TRIGGER_DEPTH 10
+# define SQLITE_LIMIT_WORKER_THREADS 11
+# else
+# define SQLITE_LIMIT_WORKER_THREADS 11
+#endif
+
+static int _sqlite3_limit(sqlite3* db, int limitId, int newLimit) {
+#ifndef _SQLITE_HAS_LIMIT
+ return -1;
+#else
+ return sqlite3_limit(db, limitId, newLimit);
+#endif
+}
+
+#if SQLITE_VERSION_NUMBER < 3012000
+static int sqlite3_system_errno(sqlite3 *db) {
+ return 0;
+}
+#endif
+*/
+import "C"
+import (
+ "context"
+ "database/sql"
+ "database/sql/driver"
+ "errors"
+ "fmt"
+ "io"
+ "net/url"
+ "reflect"
+ "runtime"
+ "strconv"
+ "strings"
+ "sync"
+ "syscall"
+ "time"
+ "unsafe"
+)
+
+// SQLiteTimestampFormats is timestamp formats understood by both this module
+// and SQLite. The first format in the slice will be used when saving time
+// values into the database. When parsing a string from a timestamp or datetime
+// column, the formats are tried in order.
+var SQLiteTimestampFormats = []string{
+ // By default, store timestamps with whatever timezone they come with.
+ // When parsed, they will be returned with the same timezone.
+ "2006-01-02 15:04:05.999999999-07:00",
+ "2006-01-02T15:04:05.999999999-07:00",
+ "2006-01-02 15:04:05.999999999",
+ "2006-01-02T15:04:05.999999999",
+ "2006-01-02 15:04:05",
+ "2006-01-02T15:04:05",
+ "2006-01-02 15:04",
+ "2006-01-02T15:04",
+ "2006-01-02",
+}
+
+const (
+ columnDate string = "date"
+ columnDatetime string = "datetime"
+ columnTimestamp string = "timestamp"
+)
+
+func init() {
+ sql.Register("sqlite3", &SQLiteDriver{})
+}
+
+// Version returns SQLite library version information.
+func Version() (libVersion string, libVersionNumber int, sourceID string) {
+ libVersion = C.GoString(C.sqlite3_libversion())
+ libVersionNumber = int(C.sqlite3_libversion_number())
+ sourceID = C.GoString(C.sqlite3_sourceid())
+ return libVersion, libVersionNumber, sourceID
+}
+
+const (
+ // used by authorizer and pre_update_hook
+ SQLITE_DELETE = C.SQLITE_DELETE
+ SQLITE_INSERT = C.SQLITE_INSERT
+ SQLITE_UPDATE = C.SQLITE_UPDATE
+
+ // used by authorzier - as return value
+ SQLITE_OK = C.SQLITE_OK
+ SQLITE_IGNORE = C.SQLITE_IGNORE
+ SQLITE_DENY = C.SQLITE_DENY
+
+ // different actions query tries to do - passed as argument to authorizer
+ SQLITE_CREATE_INDEX = C.SQLITE_CREATE_INDEX
+ SQLITE_CREATE_TABLE = C.SQLITE_CREATE_TABLE
+ SQLITE_CREATE_TEMP_INDEX = C.SQLITE_CREATE_TEMP_INDEX
+ SQLITE_CREATE_TEMP_TABLE = C.SQLITE_CREATE_TEMP_TABLE
+ SQLITE_CREATE_TEMP_TRIGGER = C.SQLITE_CREATE_TEMP_TRIGGER
+ SQLITE_CREATE_TEMP_VIEW = C.SQLITE_CREATE_TEMP_VIEW
+ SQLITE_CREATE_TRIGGER = C.SQLITE_CREATE_TRIGGER
+ SQLITE_CREATE_VIEW = C.SQLITE_CREATE_VIEW
+ SQLITE_CREATE_VTABLE = C.SQLITE_CREATE_VTABLE
+ SQLITE_DROP_INDEX = C.SQLITE_DROP_INDEX
+ SQLITE_DROP_TABLE = C.SQLITE_DROP_TABLE
+ SQLITE_DROP_TEMP_INDEX = C.SQLITE_DROP_TEMP_INDEX
+ SQLITE_DROP_TEMP_TABLE = C.SQLITE_DROP_TEMP_TABLE
+ SQLITE_DROP_TEMP_TRIGGER = C.SQLITE_DROP_TEMP_TRIGGER
+ SQLITE_DROP_TEMP_VIEW = C.SQLITE_DROP_TEMP_VIEW
+ SQLITE_DROP_TRIGGER = C.SQLITE_DROP_TRIGGER
+ SQLITE_DROP_VIEW = C.SQLITE_DROP_VIEW
+ SQLITE_DROP_VTABLE = C.SQLITE_DROP_VTABLE
+ SQLITE_PRAGMA = C.SQLITE_PRAGMA
+ SQLITE_READ = C.SQLITE_READ
+ SQLITE_SELECT = C.SQLITE_SELECT
+ SQLITE_TRANSACTION = C.SQLITE_TRANSACTION
+ SQLITE_ATTACH = C.SQLITE_ATTACH
+ SQLITE_DETACH = C.SQLITE_DETACH
+ SQLITE_ALTER_TABLE = C.SQLITE_ALTER_TABLE
+ SQLITE_REINDEX = C.SQLITE_REINDEX
+ SQLITE_ANALYZE = C.SQLITE_ANALYZE
+ SQLITE_FUNCTION = C.SQLITE_FUNCTION
+ SQLITE_SAVEPOINT = C.SQLITE_SAVEPOINT
+ SQLITE_COPY = C.SQLITE_COPY
+ /*SQLITE_RECURSIVE = C.SQLITE_RECURSIVE*/
+)
+
+// SQLiteDriver implements driver.Driver.
+type SQLiteDriver struct {
+ Extensions []string
+ ConnectHook func(*SQLiteConn) error
+}
+
+// SQLiteConn implements driver.Conn.
+type SQLiteConn struct {
+ mu sync.Mutex
+ db *C.sqlite3
+ loc *time.Location
+ txlock string
+ funcs []*functionInfo
+ aggregators []*aggInfo
+}
+
+// SQLiteTx implements driver.Tx.
+type SQLiteTx struct {
+ c *SQLiteConn
+}
+
+// SQLiteStmt implements driver.Stmt.
+type SQLiteStmt struct {
+ mu sync.Mutex
+ c *SQLiteConn
+ s *C.sqlite3_stmt
+ t string
+ closed bool
+ cls bool
+}
+
+// SQLiteResult implements sql.Result.
+type SQLiteResult struct {
+ id int64
+ changes int64
+}
+
+// SQLiteRows implements driver.Rows.
+type SQLiteRows struct {
+ s *SQLiteStmt
+ nc int
+ cols []string
+ decltype []string
+ cls bool
+ closed bool
+ ctx context.Context // no better alternative to pass context into Next() method
+}
+
+type functionInfo struct {
+ f reflect.Value
+ argConverters []callbackArgConverter
+ variadicConverter callbackArgConverter
+ retConverter callbackRetConverter
+}
+
+func (fi *functionInfo) Call(ctx *C.sqlite3_context, argv []*C.sqlite3_value) {
+ args, err := callbackConvertArgs(argv, fi.argConverters, fi.variadicConverter)
+ if err != nil {
+ callbackError(ctx, err)
+ return
+ }
+
+ ret := fi.f.Call(args)
+
+ if len(ret) == 2 && ret[1].Interface() != nil {
+ callbackError(ctx, ret[1].Interface().(error))
+ return
+ }
+
+ err = fi.retConverter(ctx, ret[0])
+ if err != nil {
+ callbackError(ctx, err)
+ return
+ }
+}
+
+type aggInfo struct {
+ constructor reflect.Value
+
+ // Active aggregator objects for aggregations in flight. The
+ // aggregators are indexed by a counter stored in the aggregation
+ // user data space provided by sqlite.
+ active map[int64]reflect.Value
+ next int64
+
+ stepArgConverters []callbackArgConverter
+ stepVariadicConverter callbackArgConverter
+
+ doneRetConverter callbackRetConverter
+}
+
+func (ai *aggInfo) agg(ctx *C.sqlite3_context) (int64, reflect.Value, error) {
+ aggIdx := (*int64)(C.sqlite3_aggregate_context(ctx, C.int(8)))
+ if *aggIdx == 0 {
+ *aggIdx = ai.next
+ ret := ai.constructor.Call(nil)
+ if len(ret) == 2 && ret[1].Interface() != nil {
+ return 0, reflect.Value{}, ret[1].Interface().(error)
+ }
+ if ret[0].IsNil() {
+ return 0, reflect.Value{}, errors.New("aggregator constructor returned nil state")
+ }
+ ai.next++
+ ai.active[*aggIdx] = ret[0]
+ }
+ return *aggIdx, ai.active[*aggIdx], nil
+}
+
+func (ai *aggInfo) Step(ctx *C.sqlite3_context, argv []*C.sqlite3_value) {
+ _, agg, err := ai.agg(ctx)
+ if err != nil {
+ callbackError(ctx, err)
+ return
+ }
+
+ args, err := callbackConvertArgs(argv, ai.stepArgConverters, ai.stepVariadicConverter)
+ if err != nil {
+ callbackError(ctx, err)
+ return
+ }
+
+ ret := agg.MethodByName("Step").Call(args)
+ if len(ret) == 1 && ret[0].Interface() != nil {
+ callbackError(ctx, ret[0].Interface().(error))
+ return
+ }
+}
+
+func (ai *aggInfo) Done(ctx *C.sqlite3_context) {
+ idx, agg, err := ai.agg(ctx)
+ if err != nil {
+ callbackError(ctx, err)
+ return
+ }
+ defer func() { delete(ai.active, idx) }()
+
+ ret := agg.MethodByName("Done").Call(nil)
+ if len(ret) == 2 && ret[1].Interface() != nil {
+ callbackError(ctx, ret[1].Interface().(error))
+ return
+ }
+
+ err = ai.doneRetConverter(ctx, ret[0])
+ if err != nil {
+ callbackError(ctx, err)
+ return
+ }
+}
+
+// Commit transaction.
+func (tx *SQLiteTx) Commit() error {
+ _, err := tx.c.exec(context.Background(), "COMMIT", nil)
+ if err != nil && err.(Error).Code == C.SQLITE_BUSY {
+ // sqlite3 will leave the transaction open in this scenario.
+ // However, database/sql considers the transaction complete once we
+ // return from Commit() - we must clean up to honour its semantics.
+ tx.c.exec(context.Background(), "ROLLBACK", nil)
+ }
+ return err
+}
+
+// Rollback transaction.
+func (tx *SQLiteTx) Rollback() error {
+ _, err := tx.c.exec(context.Background(), "ROLLBACK", nil)
+ return err
+}
+
+// RegisterCollation makes a Go function available as a collation.
+//
+// cmp receives two UTF-8 strings, a and b. The result should be 0 if
+// a==b, -1 if a < b, and +1 if a > b.
+//
+// cmp must always return the same result given the same
+// inputs. Additionally, it must have the following properties for all
+// strings A, B and C: if A==B then B==A; if A==B and B==C then A==C;
+// if A<B then B>A; if A<B and B<C then A<C.
+//
+// If cmp does not obey these constraints, sqlite3's behavior is
+// undefined when the collation is used.
+func (c *SQLiteConn) RegisterCollation(name string, cmp func(string, string) int) error {
+ handle := newHandle(c, cmp)
+ cname := C.CString(name)
+ defer C.free(unsafe.Pointer(cname))
+ rv := C.sqlite3_create_collation(c.db, cname, C.SQLITE_UTF8, handle, (*[0]byte)(unsafe.Pointer(C.compareTrampoline)))
+ if rv != C.SQLITE_OK {
+ return c.lastError()
+ }
+ return nil
+}
+
+// RegisterCommitHook sets the commit hook for a connection.
+//
+// If the callback returns non-zero the transaction will become a rollback.
+//
+// If there is an existing commit hook for this connection, it will be
+// removed. If callback is nil the existing hook (if any) will be removed
+// without creating a new one.
+func (c *SQLiteConn) RegisterCommitHook(callback func() int) {
+ if callback == nil {
+ C.sqlite3_commit_hook(c.db, nil, nil)
+ } else {
+ C.sqlite3_commit_hook(c.db, (*[0]byte)(C.commitHookTrampoline), newHandle(c, callback))
+ }
+}
+
+// RegisterRollbackHook sets the rollback hook for a connection.
+//
+// If there is an existing rollback hook for this connection, it will be
+// removed. If callback is nil the existing hook (if any) will be removed
+// without creating a new one.
+func (c *SQLiteConn) RegisterRollbackHook(callback func()) {
+ if callback == nil {
+ C.sqlite3_rollback_hook(c.db, nil, nil)
+ } else {
+ C.sqlite3_rollback_hook(c.db, (*[0]byte)(C.rollbackHookTrampoline), newHandle(c, callback))
+ }
+}
+
+// RegisterUpdateHook sets the update hook for a connection.
+//
+// The parameters to the callback are the operation (one of the constants
+// SQLITE_INSERT, SQLITE_DELETE, or SQLITE_UPDATE), the database name, the
+// table name, and the rowid.
+//
+// If there is an existing update hook for this connection, it will be
+// removed. If callback is nil the existing hook (if any) will be removed
+// without creating a new one.
+func (c *SQLiteConn) RegisterUpdateHook(callback func(int, string, string, int64)) {
+ if callback == nil {
+ C.sqlite3_update_hook(c.db, nil, nil)
+ } else {
+ C.sqlite3_update_hook(c.db, (*[0]byte)(C.updateHookTrampoline), newHandle(c, callback))
+ }
+}
+
+// RegisterAuthorizer sets the authorizer for connection.
+//
+// The parameters to the callback are the operation (one of the constants
+// SQLITE_INSERT, SQLITE_DELETE, or SQLITE_UPDATE), and 1 to 3 arguments,
+// depending on operation. More details see:
+// https://www.sqlite.org/c3ref/c_alter_table.html
+func (c *SQLiteConn) RegisterAuthorizer(callback func(int, string, string, string) int) {
+ if callback == nil {
+ C.sqlite3_set_authorizer(c.db, nil, nil)
+ } else {
+ C.sqlite3_set_authorizer(c.db, (*[0]byte)(C.authorizerTrampoline), newHandle(c, callback))
+ }
+}
+
+// RegisterFunc makes a Go function available as a SQLite function.
+//
+// The Go function can have arguments of the following types: any
+// numeric type except complex, bool, []byte, string and
+// interface{}. interface{} arguments are given the direct translation
+// of the SQLite data type: int64 for INTEGER, float64 for FLOAT,
+// []byte for BLOB, string for TEXT.
+//
+// The function can additionally be variadic, as long as the type of
+// the variadic argument is one of the above.
+//
+// If pure is true. SQLite will assume that the function's return
+// value depends only on its inputs, and make more aggressive
+// optimizations in its queries.
+//
+// See _example/go_custom_funcs for a detailed example.
+func (c *SQLiteConn) RegisterFunc(name string, impl interface{}, pure bool) error {
+ var fi functionInfo
+ fi.f = reflect.ValueOf(impl)
+ t := fi.f.Type()
+ if t.Kind() != reflect.Func {
+ return errors.New("Non-function passed to RegisterFunc")
+ }
+ if t.NumOut() != 1 && t.NumOut() != 2 {
+ return errors.New("SQLite functions must return 1 or 2 values")
+ }
+ if t.NumOut() == 2 && !t.Out(1).Implements(reflect.TypeOf((*error)(nil)).Elem()) {
+ return errors.New("Second return value of SQLite function must be error")
+ }
+
+ numArgs := t.NumIn()
+ if t.IsVariadic() {
+ numArgs--
+ }
+
+ for i := 0; i < numArgs; i++ {
+ conv, err := callbackArg(t.In(i))
+ if err != nil {
+ return err
+ }
+ fi.argConverters = append(fi.argConverters, conv)
+ }
+
+ if t.IsVariadic() {
+ conv, err := callbackArg(t.In(numArgs).Elem())
+ if err != nil {
+ return err
+ }
+ fi.variadicConverter = conv
+ // Pass -1 to sqlite so that it allows any number of
+ // arguments. The call helper verifies that the minimum number
+ // of arguments is present for variadic functions.
+ numArgs = -1
+ }
+
+ conv, err := callbackRet(t.Out(0))
+ if err != nil {
+ return err
+ }
+ fi.retConverter = conv
+
+ // fi must outlast the database connection, or we'll have dangling pointers.
+ c.funcs = append(c.funcs, &fi)
+
+ cname := C.CString(name)
+ defer C.free(unsafe.Pointer(cname))
+ opts := C.SQLITE_UTF8
+ if pure {
+ opts |= C.SQLITE_DETERMINISTIC
+ }
+ rv := sqlite3CreateFunction(c.db, cname, C.int(numArgs), C.int(opts), newHandle(c, &fi), C.callbackTrampoline, nil, nil)
+ if rv != C.SQLITE_OK {
+ return c.lastError()
+ }
+ return nil
+}
+
+func sqlite3CreateFunction(db *C.sqlite3, zFunctionName *C.char, nArg C.int, eTextRep C.int, pApp unsafe.Pointer, xFunc unsafe.Pointer, xStep unsafe.Pointer, xFinal unsafe.Pointer) C.int {
+ return C._sqlite3_create_function(db, zFunctionName, nArg, eTextRep, C.uintptr_t(uintptr(pApp)), (*[0]byte)(xFunc), (*[0]byte)(xStep), (*[0]byte)(xFinal))
+}
+
+// RegisterAggregator makes a Go type available as a SQLite aggregation function.
+//
+// Because aggregation is incremental, it's implemented in Go with a
+// type that has 2 methods: func Step(values) accumulates one row of
+// data into the accumulator, and func Done() ret finalizes and
+// returns the aggregate value. "values" and "ret" may be any type
+// supported by RegisterFunc.
+//
+// RegisterAggregator takes as implementation a constructor function
+// that constructs an instance of the aggregator type each time an
+// aggregation begins. The constructor must return a pointer to a
+// type, or an interface that implements Step() and Done().
+//
+// The constructor function and the Step/Done methods may optionally
+// return an error in addition to their other return values.
+//
+// See _example/go_custom_funcs for a detailed example.
+func (c *SQLiteConn) RegisterAggregator(name string, impl interface{}, pure bool) error {
+ var ai aggInfo
+ ai.constructor = reflect.ValueOf(impl)
+ t := ai.constructor.Type()
+ if t.Kind() != reflect.Func {
+ return errors.New("non-function passed to RegisterAggregator")
+ }
+ if t.NumOut() != 1 && t.NumOut() != 2 {
+ return errors.New("SQLite aggregator constructors must return 1 or 2 values")
+ }
+ if t.NumOut() == 2 && !t.Out(1).Implements(reflect.TypeOf((*error)(nil)).Elem()) {
+ return errors.New("Second return value of SQLite function must be error")
+ }
+ if t.NumIn() != 0 {
+ return errors.New("SQLite aggregator constructors must not have arguments")
+ }
+
+ agg := t.Out(0)
+ switch agg.Kind() {
+ case reflect.Ptr, reflect.Interface:
+ default:
+ return errors.New("SQlite aggregator constructor must return a pointer object")
+ }
+ stepFn, found := agg.MethodByName("Step")
+ if !found {
+ return errors.New("SQlite aggregator doesn't have a Step() function")
+ }
+ step := stepFn.Type
+ if step.NumOut() != 0 && step.NumOut() != 1 {
+ return errors.New("SQlite aggregator Step() function must return 0 or 1 values")
+ }
+ if step.NumOut() == 1 && !step.Out(0).Implements(reflect.TypeOf((*error)(nil)).Elem()) {
+ return errors.New("type of SQlite aggregator Step() return value must be error")
+ }
+
+ stepNArgs := step.NumIn()
+ start := 0
+ if agg.Kind() == reflect.Ptr {
+ // Skip over the method receiver
+ stepNArgs--
+ start++
+ }
+ if step.IsVariadic() {
+ stepNArgs--
+ }
+ for i := start; i < start+stepNArgs; i++ {
+ conv, err := callbackArg(step.In(i))
+ if err != nil {
+ return err
+ }
+ ai.stepArgConverters = append(ai.stepArgConverters, conv)
+ }
+ if step.IsVariadic() {
+ conv, err := callbackArg(step.In(start + stepNArgs).Elem())
+ if err != nil {
+ return err
+ }
+ ai.stepVariadicConverter = conv
+ // Pass -1 to sqlite so that it allows any number of
+ // arguments. The call helper verifies that the minimum number
+ // of arguments is present for variadic functions.
+ stepNArgs = -1
+ }
+
+ doneFn, found := agg.MethodByName("Done")
+ if !found {
+ return errors.New("SQlite aggregator doesn't have a Done() function")
+ }
+ done := doneFn.Type
+ doneNArgs := done.NumIn()
+ if agg.Kind() == reflect.Ptr {
+ // Skip over the method receiver
+ doneNArgs--
+ }
+ if doneNArgs != 0 {
+ return errors.New("SQlite aggregator Done() function must have no arguments")
+ }
+ if done.NumOut() != 1 && done.NumOut() != 2 {
+ return errors.New("SQLite aggregator Done() function must return 1 or 2 values")
+ }
+ if done.NumOut() == 2 && !done.Out(1).Implements(reflect.TypeOf((*error)(nil)).Elem()) {
+ return errors.New("second return value of SQLite aggregator Done() function must be error")
+ }
+
+ conv, err := callbackRet(done.Out(0))
+ if err != nil {
+ return err
+ }
+ ai.doneRetConverter = conv
+ ai.active = make(map[int64]reflect.Value)
+ ai.next = 1
+
+ // ai must outlast the database connection, or we'll have dangling pointers.
+ c.aggregators = append(c.aggregators, &ai)
+
+ cname := C.CString(name)
+ defer C.free(unsafe.Pointer(cname))
+ opts := C.SQLITE_UTF8
+ if pure {
+ opts |= C.SQLITE_DETERMINISTIC
+ }
+ rv := sqlite3CreateFunction(c.db, cname, C.int(stepNArgs), C.int(opts), newHandle(c, &ai), nil, C.stepTrampoline, C.doneTrampoline)
+ if rv != C.SQLITE_OK {
+ return c.lastError()
+ }
+ return nil
+}
+
+// AutoCommit return which currently auto commit or not.
+func (c *SQLiteConn) AutoCommit() bool {
+ c.mu.Lock()
+ defer c.mu.Unlock()
+ return int(C.sqlite3_get_autocommit(c.db)) != 0
+}
+
+func (c *SQLiteConn) lastError() error {
+ return lastError(c.db)
+}
+
+// Note: may be called with db == nil
+func lastError(db *C.sqlite3) error {
+ rv := C.sqlite3_errcode(db) // returns SQLITE_NOMEM if db == nil
+ if rv == C.SQLITE_OK {
+ return nil
+ }
+ extrv := C.sqlite3_extended_errcode(db) // returns SQLITE_NOMEM if db == nil
+ errStr := C.GoString(C.sqlite3_errmsg(db)) // returns "out of memory" if db == nil
+
+ // https://www.sqlite.org/c3ref/system_errno.html
+ // sqlite3_system_errno is only meaningful if the error code was SQLITE_CANTOPEN,
+ // or it was SQLITE_IOERR and the extended code was not SQLITE_IOERR_NOMEM
+ var systemErrno syscall.Errno
+ if rv == C.SQLITE_CANTOPEN || (rv == C.SQLITE_IOERR && extrv != C.SQLITE_IOERR_NOMEM) {
+ systemErrno = syscall.Errno(C.sqlite3_system_errno(db))
+ }
+
+ return Error{
+ Code: ErrNo(rv),
+ ExtendedCode: ErrNoExtended(extrv),
+ SystemErrno: systemErrno,
+ err: errStr,
+ }
+}
+
+// Exec implements Execer.
+func (c *SQLiteConn) Exec(query string, args []driver.Value) (driver.Result, error) {
+ list := make([]namedValue, len(args))
+ for i, v := range args {
+ list[i] = namedValue{
+ Ordinal: i + 1,
+ Value: v,
+ }
+ }
+ return c.exec(context.Background(), query, list)
+}
+
+func (c *SQLiteConn) exec(ctx context.Context, query string, args []namedValue) (driver.Result, error) {
+ start := 0
+ for {
+ s, err := c.prepare(ctx, query)
+ if err != nil {
+ return nil, err
+ }
+ var res driver.Result
+ if s.(*SQLiteStmt).s != nil {
+ stmtArgs := make([]namedValue, 0, len(args))
+ na := s.NumInput()
+ if len(args)-start < na {
+ s.Close()
+ return nil, fmt.Errorf("not enough args to execute query: want %d got %d", na, len(args))
+ }
+ // consume the number of arguments used in the current
+ // statement and append all named arguments not
+ // contained therein
+ stmtArgs = append(stmtArgs, args[start:start+na]...)
+ for i := range args {
+ if (i < start || i >= na) && args[i].Name != "" {
+ stmtArgs = append(stmtArgs, args[i])
+ }
+ }
+ for i := range stmtArgs {
+ stmtArgs[i].Ordinal = i + 1
+ }
+ res, err = s.(*SQLiteStmt).exec(ctx, stmtArgs)
+ if err != nil && err != driver.ErrSkip {
+ s.Close()
+ return nil, err
+ }
+ start += na
+ }
+ tail := s.(*SQLiteStmt).t
+ s.Close()
+ if tail == "" {
+ if res == nil {
+ // https://github.com/mattn/go-sqlite3/issues/963
+ res = &SQLiteResult{0, 0}
+ }
+ return res, nil
+ }
+ query = tail
+ }
+}
+
+type namedValue struct {
+ Name string
+ Ordinal int
+ Value driver.Value
+}
+
+// Query implements Queryer.
+func (c *SQLiteConn) Query(query string, args []driver.Value) (driver.Rows, error) {
+ list := make([]namedValue, len(args))
+ for i, v := range args {
+ list[i] = namedValue{
+ Ordinal: i + 1,
+ Value: v,
+ }
+ }
+ return c.query(context.Background(), query, list)
+}
+
+func (c *SQLiteConn) query(ctx context.Context, query string, args []namedValue) (driver.Rows, error) {
+ start := 0
+ for {
+ stmtArgs := make([]namedValue, 0, len(args))
+ s, err := c.prepare(ctx, query)
+ if err != nil {
+ return nil, err
+ }
+ s.(*SQLiteStmt).cls = true
+ na := s.NumInput()
+ if len(args)-start < na {
+ return nil, fmt.Errorf("not enough args to execute query: want %d got %d", na, len(args)-start)
+ }
+ // consume the number of arguments used in the current
+ // statement and append all named arguments not contained
+ // therein
+ stmtArgs = append(stmtArgs, args[start:start+na]...)
+ for i := range args {
+ if (i < start || i >= na) && args[i].Name != "" {
+ stmtArgs = append(stmtArgs, args[i])
+ }
+ }
+ for i := range stmtArgs {
+ stmtArgs[i].Ordinal = i + 1
+ }
+ rows, err := s.(*SQLiteStmt).query(ctx, stmtArgs)
+ if err != nil && err != driver.ErrSkip {
+ s.Close()
+ return rows, err
+ }
+ start += na
+ tail := s.(*SQLiteStmt).t
+ if tail == "" {
+ return rows, nil
+ }
+ rows.Close()
+ s.Close()
+ query = tail
+ }
+}
+
+// Begin transaction.
+func (c *SQLiteConn) Begin() (driver.Tx, error) {
+ return c.begin(context.Background())
+}
+
+func (c *SQLiteConn) begin(ctx context.Context) (driver.Tx, error) {
+ if _, err := c.exec(ctx, c.txlock, nil); err != nil {
+ return nil, err
+ }
+ return &SQLiteTx{c}, nil
+}
+
+// Open database and return a new connection.
+//
+// A pragma can take either zero or one argument.
+// The argument is may be either in parentheses or it may be separated from
+// the pragma name by an equal sign. The two syntaxes yield identical results.
+// In many pragmas, the argument is a boolean. The boolean can be one of:
+// 1 yes true on
+// 0 no false off
+//
+// You can specify a DSN string using a URI as the filename.
+// test.db
+// file:test.db?cache=shared&mode=memory
+// :memory:
+// file::memory:
+//
+// mode
+// Access mode of the database.
+// https://www.sqlite.org/c3ref/open.html
+// Values:
+// - ro
+// - rw
+// - rwc
+// - memory
+//
+// cache
+// SQLite Shared-Cache Mode
+// https://www.sqlite.org/sharedcache.html
+// Values:
+// - shared
+// - private
+//
+// immutable=Boolean
+// The immutable parameter is a boolean query parameter that indicates
+// that the database file is stored on read-only media. When immutable is set,
+// SQLite assumes that the database file cannot be changed,
+// even by a process with higher privilege,
+// and so the database is opened read-only and all locking and change detection is disabled.
+// Caution: Setting the immutable property on a database file that
+// does in fact change can result in incorrect query results and/or SQLITE_CORRUPT errors.
+//
+// go-sqlite3 adds the following query parameters to those used by SQLite:
+// _loc=XXX
+// Specify location of time format. It's possible to specify "auto".
+//
+// _mutex=XXX
+// Specify mutex mode. XXX can be "no", "full".
+//
+// _txlock=XXX
+// Specify locking behavior for transactions. XXX can be "immediate",
+// "deferred", "exclusive".
+//
+// _auto_vacuum=X | _vacuum=X
+// 0 | none - Auto Vacuum disabled
+// 1 | full - Auto Vacuum FULL
+// 2 | incremental - Auto Vacuum Incremental
+//
+// _busy_timeout=XXX"| _timeout=XXX
+// Specify value for sqlite3_busy_timeout.
+//
+// _case_sensitive_like=Boolean | _cslike=Boolean
+// https://www.sqlite.org/pragma.html#pragma_case_sensitive_like
+// Default or disabled the LIKE operation is case-insensitive.
+// When enabling this options behaviour of LIKE will become case-sensitive.
+//
+// _defer_foreign_keys=Boolean | _defer_fk=Boolean
+// Defer Foreign Keys until outermost transaction is committed.
+//
+// _foreign_keys=Boolean | _fk=Boolean
+// Enable or disable enforcement of foreign keys.
+//
+// _ignore_check_constraints=Boolean
+// This pragma enables or disables the enforcement of CHECK constraints.
+// The default setting is off, meaning that CHECK constraints are enforced by default.
+//
+// _journal_mode=MODE | _journal=MODE
+// Set journal mode for the databases associated with the current connection.
+// https://www.sqlite.org/pragma.html#pragma_journal_mode
+//
+// _locking_mode=X | _locking=X
+// Sets the database connection locking-mode.
+// The locking-mode is either NORMAL or EXCLUSIVE.
+// https://www.sqlite.org/pragma.html#pragma_locking_mode
+//
+// _query_only=Boolean
+// The query_only pragma prevents all changes to database files when enabled.
+//
+// _recursive_triggers=Boolean | _rt=Boolean
+// Enable or disable recursive triggers.
+//
+// _secure_delete=Boolean|FAST
+// When secure_delete is on, SQLite overwrites deleted content with zeros.
+// https://www.sqlite.org/pragma.html#pragma_secure_delete
+//
+// _synchronous=X | _sync=X
+// Change the setting of the "synchronous" flag.
+// https://www.sqlite.org/pragma.html#pragma_synchronous
+//
+// _writable_schema=Boolean
+// When this pragma is on, the SQLITE_MASTER tables in which database
+// can be changed using ordinary UPDATE, INSERT, and DELETE statements.
+// Warning: misuse of this pragma can easily result in a corrupt database file.
+//
+//
+func (d *SQLiteDriver) Open(dsn string) (driver.Conn, error) {
+ if C.sqlite3_threadsafe() == 0 {
+ return nil, errors.New("sqlite library was not compiled for thread-safe operation")
+ }
+
+ var pkey string
+
+ // Options
+ var loc *time.Location
+ authCreate := false
+ authUser := ""
+ authPass := ""
+ authCrypt := ""
+ authSalt := ""
+ mutex := C.int(C.SQLITE_OPEN_FULLMUTEX)
+ txlock := "BEGIN"
+
+ // PRAGMA's
+ autoVacuum := -1
+ busyTimeout := 5000
+ caseSensitiveLike := -1
+ deferForeignKeys := -1
+ foreignKeys := -1
+ ignoreCheckConstraints := -1
+ var journalMode string
+ lockingMode := "NORMAL"
+ queryOnly := -1
+ recursiveTriggers := -1
+ secureDelete := "DEFAULT"
+ synchronousMode := "NORMAL"
+ writableSchema := -1
+ vfsName := ""
+ var cacheSize *int64
+
+ pos := strings.IndexRune(dsn, '?')
+ if pos >= 1 {
+ params, err := url.ParseQuery(dsn[pos+1:])
+ if err != nil {
+ return nil, err
+ }
+
+ // Authentication
+ if _, ok := params["_auth"]; ok {
+ authCreate = true
+ }
+ if val := params.Get("_auth_user"); val != "" {
+ authUser = val
+ }
+ if val := params.Get("_auth_pass"); val != "" {
+ authPass = val
+ }
+ if val := params.Get("_auth_crypt"); val != "" {
+ authCrypt = val
+ }
+ if val := params.Get("_auth_salt"); val != "" {
+ authSalt = val
+ }
+
+ // _loc
+ if val := params.Get("_loc"); val != "" {
+ switch strings.ToLower(val) {
+ case "auto":
+ loc = time.Local
+ default:
+ loc, err = time.LoadLocation(val)
+ if err != nil {
+ return nil, fmt.Errorf("Invalid _loc: %v: %v", val, err)
+ }
+ }
+ }
+
+ // _mutex
+ if val := params.Get("_mutex"); val != "" {
+ switch strings.ToLower(val) {
+ case "no":
+ mutex = C.SQLITE_OPEN_NOMUTEX
+ case "full":
+ mutex = C.SQLITE_OPEN_FULLMUTEX
+ default:
+ return nil, fmt.Errorf("Invalid _mutex: %v", val)
+ }
+ }
+
+ // _txlock
+ if val := params.Get("_txlock"); val != "" {
+ switch strings.ToLower(val) {
+ case "immediate":
+ txlock = "BEGIN IMMEDIATE"
+ case "exclusive":
+ txlock = "BEGIN EXCLUSIVE"
+ case "deferred":
+ txlock = "BEGIN"
+ default:
+ return nil, fmt.Errorf("Invalid _txlock: %v", val)
+ }
+ }
+
+ // Auto Vacuum (_vacuum)
+ //
+ // https://www.sqlite.org/pragma.html#pragma_auto_vacuum
+ //
+ pkey = "" // Reset pkey
+ if _, ok := params["_auto_vacuum"]; ok {
+ pkey = "_auto_vacuum"
+ }
+ if _, ok := params["_vacuum"]; ok {
+ pkey = "_vacuum"
+ }
+ if val := params.Get(pkey); val != "" {
+ switch strings.ToLower(val) {
+ case "0", "none":
+ autoVacuum = 0
+ case "1", "full":
+ autoVacuum = 1
+ case "2", "incremental":
+ autoVacuum = 2
+ default:
+ return nil, fmt.Errorf("Invalid _auto_vacuum: %v, expecting value of '0 NONE 1 FULL 2 INCREMENTAL'", val)
+ }
+ }
+
+ // Busy Timeout (_busy_timeout)
+ //
+ // https://www.sqlite.org/pragma.html#pragma_busy_timeout
+ //
+ pkey = "" // Reset pkey
+ if _, ok := params["_busy_timeout"]; ok {
+ pkey = "_busy_timeout"
+ }
+ if _, ok := params["_timeout"]; ok {
+ pkey = "_timeout"
+ }
+ if val := params.Get(pkey); val != "" {
+ iv, err := strconv.ParseInt(val, 10, 64)
+ if err != nil {
+ return nil, fmt.Errorf("Invalid _busy_timeout: %v: %v", val, err)
+ }
+ busyTimeout = int(iv)
+ }
+
+ // Case Sensitive Like (_cslike)
+ //
+ // https://www.sqlite.org/pragma.html#pragma_case_sensitive_like
+ //
+ pkey = "" // Reset pkey
+ if _, ok := params["_case_sensitive_like"]; ok {
+ pkey = "_case_sensitive_like"
+ }
+ if _, ok := params["_cslike"]; ok {
+ pkey = "_cslike"
+ }
+ if val := params.Get(pkey); val != "" {
+ switch strings.ToLower(val) {
+ case "0", "no", "false", "off":
+ caseSensitiveLike = 0
+ case "1", "yes", "true", "on":
+ caseSensitiveLike = 1
+ default:
+ return nil, fmt.Errorf("Invalid _case_sensitive_like: %v, expecting boolean value of '0 1 false true no yes off on'", val)
+ }
+ }
+
+ // Defer Foreign Keys (_defer_foreign_keys | _defer_fk)
+ //
+ // https://www.sqlite.org/pragma.html#pragma_defer_foreign_keys
+ //
+ pkey = "" // Reset pkey
+ if _, ok := params["_defer_foreign_keys"]; ok {
+ pkey = "_defer_foreign_keys"
+ }
+ if _, ok := params["_defer_fk"]; ok {
+ pkey = "_defer_fk"
+ }
+ if val := params.Get(pkey); val != "" {
+ switch strings.ToLower(val) {
+ case "0", "no", "false", "off":
+ deferForeignKeys = 0
+ case "1", "yes", "true", "on":
+ deferForeignKeys = 1
+ default:
+ return nil, fmt.Errorf("Invalid _defer_foreign_keys: %v, expecting boolean value of '0 1 false true no yes off on'", val)
+ }
+ }
+
+ // Foreign Keys (_foreign_keys | _fk)
+ //
+ // https://www.sqlite.org/pragma.html#pragma_foreign_keys
+ //
+ pkey = "" // Reset pkey
+ if _, ok := params["_foreign_keys"]; ok {
+ pkey = "_foreign_keys"
+ }
+ if _, ok := params["_fk"]; ok {
+ pkey = "_fk"
+ }
+ if val := params.Get(pkey); val != "" {
+ switch strings.ToLower(val) {
+ case "0", "no", "false", "off":
+ foreignKeys = 0
+ case "1", "yes", "true", "on":
+ foreignKeys = 1
+ default:
+ return nil, fmt.Errorf("Invalid _foreign_keys: %v, expecting boolean value of '0 1 false true no yes off on'", val)
+ }
+ }
+
+ // Ignore CHECK Constrains (_ignore_check_constraints)
+ //
+ // https://www.sqlite.org/pragma.html#pragma_ignore_check_constraints
+ //
+ if val := params.Get("_ignore_check_constraints"); val != "" {
+ switch strings.ToLower(val) {
+ case "0", "no", "false", "off":
+ ignoreCheckConstraints = 0
+ case "1", "yes", "true", "on":
+ ignoreCheckConstraints = 1
+ default:
+ return nil, fmt.Errorf("Invalid _ignore_check_constraints: %v, expecting boolean value of '0 1 false true no yes off on'", val)
+ }
+ }
+
+ // Journal Mode (_journal_mode | _journal)
+ //
+ // https://www.sqlite.org/pragma.html#pragma_journal_mode
+ //
+ pkey = "" // Reset pkey
+ if _, ok := params["_journal_mode"]; ok {
+ pkey = "_journal_mode"
+ }
+ if _, ok := params["_journal"]; ok {
+ pkey = "_journal"
+ }
+ if val := params.Get(pkey); val != "" {
+ switch strings.ToUpper(val) {
+ case "DELETE", "TRUNCATE", "PERSIST", "MEMORY", "OFF":
+ journalMode = strings.ToUpper(val)
+ case "WAL":
+ journalMode = strings.ToUpper(val)
+
+ // For WAL Mode set Synchronous Mode to 'NORMAL'
+ // See https://www.sqlite.org/pragma.html#pragma_synchronous
+ synchronousMode = "NORMAL"
+ default:
+ return nil, fmt.Errorf("Invalid _journal: %v, expecting value of 'DELETE TRUNCATE PERSIST MEMORY WAL OFF'", val)
+ }
+ }
+
+ // Locking Mode (_locking)
+ //
+ // https://www.sqlite.org/pragma.html#pragma_locking_mode
+ //
+ pkey = "" // Reset pkey
+ if _, ok := params["_locking_mode"]; ok {
+ pkey = "_locking_mode"
+ }
+ if _, ok := params["_locking"]; ok {
+ pkey = "_locking"
+ }
+ if val := params.Get(pkey); val != "" {
+ switch strings.ToUpper(val) {
+ case "NORMAL", "EXCLUSIVE":
+ lockingMode = strings.ToUpper(val)
+ default:
+ return nil, fmt.Errorf("Invalid _locking_mode: %v, expecting value of 'NORMAL EXCLUSIVE", val)
+ }
+ }
+
+ // Query Only (_query_only)
+ //
+ // https://www.sqlite.org/pragma.html#pragma_query_only
+ //
+ if val := params.Get("_query_only"); val != "" {
+ switch strings.ToLower(val) {
+ case "0", "no", "false", "off":
+ queryOnly = 0
+ case "1", "yes", "true", "on":
+ queryOnly = 1
+ default:
+ return nil, fmt.Errorf("Invalid _query_only: %v, expecting boolean value of '0 1 false true no yes off on'", val)
+ }
+ }
+
+ // Recursive Triggers (_recursive_triggers)
+ //
+ // https://www.sqlite.org/pragma.html#pragma_recursive_triggers
+ //
+ pkey = "" // Reset pkey
+ if _, ok := params["_recursive_triggers"]; ok {
+ pkey = "_recursive_triggers"
+ }
+ if _, ok := params["_rt"]; ok {
+ pkey = "_rt"
+ }
+ if val := params.Get(pkey); val != "" {
+ switch strings.ToLower(val) {
+ case "0", "no", "false", "off":
+ recursiveTriggers = 0
+ case "1", "yes", "true", "on":
+ recursiveTriggers = 1
+ default:
+ return nil, fmt.Errorf("Invalid _recursive_triggers: %v, expecting boolean value of '0 1 false true no yes off on'", val)
+ }
+ }
+
+ // Secure Delete (_secure_delete)
+ //
+ // https://www.sqlite.org/pragma.html#pragma_secure_delete
+ //
+ if val := params.Get("_secure_delete"); val != "" {
+ switch strings.ToLower(val) {
+ case "0", "no", "false", "off":
+ secureDelete = "OFF"
+ case "1", "yes", "true", "on":
+ secureDelete = "ON"
+ case "fast":
+ secureDelete = "FAST"
+ default:
+ return nil, fmt.Errorf("Invalid _secure_delete: %v, expecting boolean value of '0 1 false true no yes off on fast'", val)
+ }
+ }
+
+ // Synchronous Mode (_synchronous | _sync)
+ //
+ // https://www.sqlite.org/pragma.html#pragma_synchronous
+ //
+ pkey = "" // Reset pkey
+ if _, ok := params["_synchronous"]; ok {
+ pkey = "_synchronous"
+ }
+ if _, ok := params["_sync"]; ok {
+ pkey = "_sync"
+ }
+ if val := params.Get(pkey); val != "" {
+ switch strings.ToUpper(val) {
+ case "0", "OFF", "1", "NORMAL", "2", "FULL", "3", "EXTRA":
+ synchronousMode = strings.ToUpper(val)
+ default:
+ return nil, fmt.Errorf("Invalid _synchronous: %v, expecting value of '0 OFF 1 NORMAL 2 FULL 3 EXTRA'", val)
+ }
+ }
+
+ // Writable Schema (_writeable_schema)
+ //
+ // https://www.sqlite.org/pragma.html#pragma_writeable_schema
+ //
+ if val := params.Get("_writable_schema"); val != "" {
+ switch strings.ToLower(val) {
+ case "0", "no", "false", "off":
+ writableSchema = 0
+ case "1", "yes", "true", "on":
+ writableSchema = 1
+ default:
+ return nil, fmt.Errorf("Invalid _writable_schema: %v, expecting boolean value of '0 1 false true no yes off on'", val)
+ }
+ }
+
+ // Cache size (_cache_size)
+ //
+ // https://sqlite.org/pragma.html#pragma_cache_size
+ //
+ if val := params.Get("_cache_size"); val != "" {
+ iv, err := strconv.ParseInt(val, 10, 64)
+ if err != nil {
+ return nil, fmt.Errorf("Invalid _cache_size: %v: %v", val, err)
+ }
+ cacheSize = &iv
+ }
+
+ if val := params.Get("vfs"); val != "" {
+ vfsName = val
+ }
+
+ if !strings.HasPrefix(dsn, "file:") {
+ dsn = dsn[:pos]
+ }
+ }
+
+ var db *C.sqlite3
+ name := C.CString(dsn)
+ defer C.free(unsafe.Pointer(name))
+ var vfs *C.char
+ if vfsName != "" {
+ vfs = C.CString(vfsName)
+ defer C.free(unsafe.Pointer(vfs))
+ }
+ rv := C._sqlite3_open_v2(name, &db,
+ mutex|C.SQLITE_OPEN_READWRITE|C.SQLITE_OPEN_CREATE,
+ vfs)
+ if rv != 0 {
+ // Save off the error _before_ closing the database.
+ // This is safe even if db is nil.
+ err := lastError(db)
+ if db != nil {
+ C.sqlite3_close_v2(db)
+ }
+ return nil, err
+ }
+ if db == nil {
+ return nil, errors.New("sqlite succeeded without returning a database")
+ }
+
+ exec := func(s string) error {
+ cs := C.CString(s)
+ rv := C.sqlite3_exec(db, cs, nil, nil, nil)
+ C.free(unsafe.Pointer(cs))
+ if rv != C.SQLITE_OK {
+ return lastError(db)
+ }
+ return nil
+ }
+
+ // Busy timeout
+ if err := exec(fmt.Sprintf("PRAGMA busy_timeout = %d;", busyTimeout)); err != nil {
+ C.sqlite3_close_v2(db)
+ return nil, err
+ }
+
+ // USER AUTHENTICATION
+ //
+ // User Authentication is always performed even when
+ // sqlite_userauth is not compiled in, because without user authentication
+ // the authentication is a no-op.
+ //
+ // Workflow
+ // - Authenticate
+ // ON::SUCCESS => Continue
+ // ON::SQLITE_AUTH => Return error and exit Open(...)
+ //
+ // - Activate User Authentication
+ // Check if the user wants to activate User Authentication.
+ // If so then first create a temporary AuthConn to the database
+ // This is possible because we are already successfully authenticated.
+ //
+ // - Check if `sqlite_user`` table exists
+ // YES => Add the provided user from DSN as Admin User and
+ // activate user authentication.
+ // NO => Continue
+ //
+
+ // Create connection to SQLite
+ conn := &SQLiteConn{db: db, loc: loc, txlock: txlock}
+
+ // Password Cipher has to be registered before authentication
+ if len(authCrypt) > 0 {
+ switch strings.ToUpper(authCrypt) {
+ case "SHA1":
+ if err := conn.RegisterFunc("sqlite_crypt", CryptEncoderSHA1, true); err != nil {
+ return nil, fmt.Errorf("CryptEncoderSHA1: %s", err)
+ }
+ case "SSHA1":
+ if len(authSalt) == 0 {
+ return nil, fmt.Errorf("_auth_crypt=ssha1, requires _auth_salt")
+ }
+ if err := conn.RegisterFunc("sqlite_crypt", CryptEncoderSSHA1(authSalt), true); err != nil {
+ return nil, fmt.Errorf("CryptEncoderSSHA1: %s", err)
+ }
+ case "SHA256":
+ if err := conn.RegisterFunc("sqlite_crypt", CryptEncoderSHA256, true); err != nil {
+ return nil, fmt.Errorf("CryptEncoderSHA256: %s", err)
+ }
+ case "SSHA256":
+ if len(authSalt) == 0 {
+ return nil, fmt.Errorf("_auth_crypt=ssha256, requires _auth_salt")
+ }
+ if err := conn.RegisterFunc("sqlite_crypt", CryptEncoderSSHA256(authSalt), true); err != nil {
+ return nil, fmt.Errorf("CryptEncoderSSHA256: %s", err)
+ }
+ case "SHA384":
+ if err := conn.RegisterFunc("sqlite_crypt", CryptEncoderSHA384, true); err != nil {
+ return nil, fmt.Errorf("CryptEncoderSHA384: %s", err)
+ }
+ case "SSHA384":
+ if len(authSalt) == 0 {
+ return nil, fmt.Errorf("_auth_crypt=ssha384, requires _auth_salt")
+ }
+ if err := conn.RegisterFunc("sqlite_crypt", CryptEncoderSSHA384(authSalt), true); err != nil {
+ return nil, fmt.Errorf("CryptEncoderSSHA384: %s", err)
+ }
+ case "SHA512":
+ if err := conn.RegisterFunc("sqlite_crypt", CryptEncoderSHA512, true); err != nil {
+ return nil, fmt.Errorf("CryptEncoderSHA512: %s", err)
+ }
+ case "SSHA512":
+ if len(authSalt) == 0 {
+ return nil, fmt.Errorf("_auth_crypt=ssha512, requires _auth_salt")
+ }
+ if err := conn.RegisterFunc("sqlite_crypt", CryptEncoderSSHA512(authSalt), true); err != nil {
+ return nil, fmt.Errorf("CryptEncoderSSHA512: %s", err)
+ }
+ }
+ }
+
+ // Preform Authentication
+ if err := conn.Authenticate(authUser, authPass); err != nil {
+ return nil, err
+ }
+
+ // Register: authenticate
+ // Authenticate will perform an authentication of the provided username
+ // and password against the database.
+ //
+ // If a database contains the SQLITE_USER table, then the
+ // call to Authenticate must be invoked with an
+ // appropriate username and password prior to enable read and write
+ //access to the database.
+ //
+ // Return SQLITE_OK on success or SQLITE_ERROR if the username/password
+ // combination is incorrect or unknown.
+ //
+ // If the SQLITE_USER table is not present in the database file, then
+ // this interface is a harmless no-op returnning SQLITE_OK.
+ if err := conn.RegisterFunc("authenticate", conn.authenticate, true); err != nil {
+ return nil, err
+ }
+ //
+ // Register: auth_user_add
+ // auth_user_add can be used (by an admin user only)
+ // to create a new user. When called on a no-authentication-required
+ // database, this routine converts the database into an authentication-
+ // required database, automatically makes the added user an
+ // administrator, and logs in the current connection as that user.
+ // The AuthUserAdd only works for the "main" database, not
+ // for any ATTACH-ed databases. Any call to AuthUserAdd by a
+ // non-admin user results in an error.
+ if err := conn.RegisterFunc("auth_user_add", conn.authUserAdd, true); err != nil {
+ return nil, err
+ }
+ //
+ // Register: auth_user_change
+ // auth_user_change can be used to change a users
+ // login credentials or admin privilege. Any user can change their own
+ // login credentials. Only an admin user can change another users login
+ // credentials or admin privilege setting. No user may change their own
+ // admin privilege setting.
+ if err := conn.RegisterFunc("auth_user_change", conn.authUserChange, true); err != nil {
+ return nil, err
+ }
+ //
+ // Register: auth_user_delete
+ // auth_user_delete can be used (by an admin user only)
+ // to delete a user. The currently logged-in user cannot be deleted,
+ // which guarantees that there is always an admin user and hence that
+ // the database cannot be converted into a no-authentication-required
+ // database.
+ if err := conn.RegisterFunc("auth_user_delete", conn.authUserDelete, true); err != nil {
+ return nil, err
+ }
+
+ // Register: auth_enabled
+ // auth_enabled can be used to check if user authentication is enabled
+ if err := conn.RegisterFunc("auth_enabled", conn.authEnabled, true); err != nil {
+ return nil, err
+ }
+
+ // Auto Vacuum
+ // Moved auto_vacuum command, the user preference for auto_vacuum needs to be implemented directly after
+ // the authentication and before the sqlite_user table gets created if the user
+ // decides to activate User Authentication because
+ // auto_vacuum needs to be set before any tables are created
+ // and activating user authentication creates the internal table `sqlite_user`.
+ if autoVacuum > -1 {
+ if err := exec(fmt.Sprintf("PRAGMA auto_vacuum = %d;", autoVacuum)); err != nil {
+ C.sqlite3_close_v2(db)
+ return nil, err
+ }
+ }
+
+ // Check if user wants to activate User Authentication
+ if authCreate {
+ // Before going any further, we need to check that the user
+ // has provided an username and password within the DSN.
+ // We are not allowed to continue.
+ if len(authUser) == 0 {
+ return nil, fmt.Errorf("Missing '_auth_user' while user authentication was requested with '_auth'")
+ }
+ if len(authPass) == 0 {
+ return nil, fmt.Errorf("Missing '_auth_pass' while user authentication was requested with '_auth'")
+ }
+
+ // Check if User Authentication is Enabled
+ authExists := conn.AuthEnabled()
+ if !authExists {
+ if err := conn.AuthUserAdd(authUser, authPass, true); err != nil {
+ return nil, err
+ }
+ }
+ }
+
+ // Case Sensitive LIKE
+ if caseSensitiveLike > -1 {
+ if err := exec(fmt.Sprintf("PRAGMA case_sensitive_like = %d;", caseSensitiveLike)); err != nil {
+ C.sqlite3_close_v2(db)
+ return nil, err
+ }
+ }
+
+ // Defer Foreign Keys
+ if deferForeignKeys > -1 {
+ if err := exec(fmt.Sprintf("PRAGMA defer_foreign_keys = %d;", deferForeignKeys)); err != nil {
+ C.sqlite3_close_v2(db)
+ return nil, err
+ }
+ }
+
+ // Forgein Keys
+ if foreignKeys > -1 {
+ if err := exec(fmt.Sprintf("PRAGMA foreign_keys = %d;", foreignKeys)); err != nil {
+ C.sqlite3_close_v2(db)
+ return nil, err
+ }
+ }
+
+ // Ignore CHECK Constraints
+ if ignoreCheckConstraints > -1 {
+ if err := exec(fmt.Sprintf("PRAGMA ignore_check_constraints = %d;", ignoreCheckConstraints)); err != nil {
+ C.sqlite3_close_v2(db)
+ return nil, err
+ }
+ }
+
+ // Journal Mode
+ if journalMode != "" {
+ if err := exec(fmt.Sprintf("PRAGMA journal_mode = %s;", journalMode)); err != nil {
+ C.sqlite3_close_v2(db)
+ return nil, err
+ }
+ }
+
+ // Locking Mode
+ // Because the default is NORMAL and this is not changed in this package
+ // by using the compile time SQLITE_DEFAULT_LOCKING_MODE this PRAGMA can always be executed
+ if err := exec(fmt.Sprintf("PRAGMA locking_mode = %s;", lockingMode)); err != nil {
+ C.sqlite3_close_v2(db)
+ return nil, err
+ }
+
+ // Query Only
+ if queryOnly > -1 {
+ if err := exec(fmt.Sprintf("PRAGMA query_only = %d;", queryOnly)); err != nil {
+ C.sqlite3_close_v2(db)
+ return nil, err
+ }
+ }
+
+ // Recursive Triggers
+ if recursiveTriggers > -1 {
+ if err := exec(fmt.Sprintf("PRAGMA recursive_triggers = %d;", recursiveTriggers)); err != nil {
+ C.sqlite3_close_v2(db)
+ return nil, err
+ }
+ }
+
+ // Secure Delete
+ //
+ // Because this package can set the compile time flag SQLITE_SECURE_DELETE with a build tag
+ // the default value for secureDelete var is 'DEFAULT' this way
+ // you can compile with secure_delete 'ON' and disable it for a specific database connection.
+ if secureDelete != "DEFAULT" {
+ if err := exec(fmt.Sprintf("PRAGMA secure_delete = %s;", secureDelete)); err != nil {
+ C.sqlite3_close_v2(db)
+ return nil, err
+ }
+ }
+
+ // Synchronous Mode
+ //
+ // Because default is NORMAL this statement is always executed
+ if err := exec(fmt.Sprintf("PRAGMA synchronous = %s;", synchronousMode)); err != nil {
+ conn.Close()
+ return nil, err
+ }
+
+ // Writable Schema
+ if writableSchema > -1 {
+ if err := exec(fmt.Sprintf("PRAGMA writable_schema = %d;", writableSchema)); err != nil {
+ C.sqlite3_close_v2(db)
+ return nil, err
+ }
+ }
+
+ // Cache Size
+ if cacheSize != nil {
+ if err := exec(fmt.Sprintf("PRAGMA cache_size = %d;", *cacheSize)); err != nil {
+ C.sqlite3_close_v2(db)
+ return nil, err
+ }
+ }
+
+ if len(d.Extensions) > 0 {
+ if err := conn.loadExtensions(d.Extensions); err != nil {
+ conn.Close()
+ return nil, err
+ }
+ }
+
+ if d.ConnectHook != nil {
+ if err := d.ConnectHook(conn); err != nil {
+ conn.Close()
+ return nil, err
+ }
+ }
+ runtime.SetFinalizer(conn, (*SQLiteConn).Close)
+ return conn, nil
+}
+
+// Close the connection.
+func (c *SQLiteConn) Close() error {
+ rv := C.sqlite3_close_v2(c.db)
+ if rv != C.SQLITE_OK {
+ return c.lastError()
+ }
+ deleteHandles(c)
+ c.mu.Lock()
+ c.db = nil
+ c.mu.Unlock()
+ runtime.SetFinalizer(c, nil)
+ return nil
+}
+
+func (c *SQLiteConn) dbConnOpen() bool {
+ if c == nil {
+ return false
+ }
+ c.mu.Lock()
+ defer c.mu.Unlock()
+ return c.db != nil
+}
+
+// Prepare the query string. Return a new statement.
+func (c *SQLiteConn) Prepare(query string) (driver.Stmt, error) {
+ return c.prepare(context.Background(), query)
+}
+
+func (c *SQLiteConn) prepare(ctx context.Context, query string) (driver.Stmt, error) {
+ pquery := C.CString(query)
+ defer C.free(unsafe.Pointer(pquery))
+ var s *C.sqlite3_stmt
+ var tail *C.char
+ rv := C._sqlite3_prepare_v2_internal(c.db, pquery, C.int(-1), &s, &tail)
+ if rv != C.SQLITE_OK {
+ return nil, c.lastError()
+ }
+ var t string
+ if tail != nil && *tail != '\000' {
+ t = strings.TrimSpace(C.GoString(tail))
+ }
+ ss := &SQLiteStmt{c: c, s: s, t: t}
+ runtime.SetFinalizer(ss, (*SQLiteStmt).Close)
+ return ss, nil
+}
+
+// Run-Time Limit Categories.
+// See: http://www.sqlite.org/c3ref/c_limit_attached.html
+const (
+ SQLITE_LIMIT_LENGTH = C.SQLITE_LIMIT_LENGTH
+ SQLITE_LIMIT_SQL_LENGTH = C.SQLITE_LIMIT_SQL_LENGTH
+ SQLITE_LIMIT_COLUMN = C.SQLITE_LIMIT_COLUMN
+ SQLITE_LIMIT_EXPR_DEPTH = C.SQLITE_LIMIT_EXPR_DEPTH
+ SQLITE_LIMIT_COMPOUND_SELECT = C.SQLITE_LIMIT_COMPOUND_SELECT
+ SQLITE_LIMIT_VDBE_OP = C.SQLITE_LIMIT_VDBE_OP
+ SQLITE_LIMIT_FUNCTION_ARG = C.SQLITE_LIMIT_FUNCTION_ARG
+ SQLITE_LIMIT_ATTACHED = C.SQLITE_LIMIT_ATTACHED
+ SQLITE_LIMIT_LIKE_PATTERN_LENGTH = C.SQLITE_LIMIT_LIKE_PATTERN_LENGTH
+ SQLITE_LIMIT_VARIABLE_NUMBER = C.SQLITE_LIMIT_VARIABLE_NUMBER
+ SQLITE_LIMIT_TRIGGER_DEPTH = C.SQLITE_LIMIT_TRIGGER_DEPTH
+ SQLITE_LIMIT_WORKER_THREADS = C.SQLITE_LIMIT_WORKER_THREADS
+)
+
+// GetFilename returns the absolute path to the file containing
+// the requested schema. When passed an empty string, it will
+// instead use the database's default schema: "main".
+// See: sqlite3_db_filename, https://www.sqlite.org/c3ref/db_filename.html
+func (c *SQLiteConn) GetFilename(schemaName string) string {
+ if schemaName == "" {
+ schemaName = "main"
+ }
+ return C.GoString(C.sqlite3_db_filename(c.db, C.CString(schemaName)))
+}
+
+// GetLimit returns the current value of a run-time limit.
+// See: sqlite3_limit, http://www.sqlite.org/c3ref/limit.html
+func (c *SQLiteConn) GetLimit(id int) int {
+ return int(C._sqlite3_limit(c.db, C.int(id), C.int(-1)))
+}
+
+// SetLimit changes the value of a run-time limits.
+// Then this method returns the prior value of the limit.
+// See: sqlite3_limit, http://www.sqlite.org/c3ref/limit.html
+func (c *SQLiteConn) SetLimit(id int, newVal int) int {
+ return int(C._sqlite3_limit(c.db, C.int(id), C.int(newVal)))
+}
+
+// Close the statement.
+func (s *SQLiteStmt) Close() error {
+ s.mu.Lock()
+ defer s.mu.Unlock()
+ if s.closed {
+ return nil
+ }
+ s.closed = true
+ if !s.c.dbConnOpen() {
+ return errors.New("sqlite statement with already closed database connection")
+ }
+ rv := C.sqlite3_finalize(s.s)
+ s.s = nil
+ if rv != C.SQLITE_OK {
+ return s.c.lastError()
+ }
+ runtime.SetFinalizer(s, nil)
+ return nil
+}
+
+// NumInput return a number of parameters.
+func (s *SQLiteStmt) NumInput() int {
+ return int(C.sqlite3_bind_parameter_count(s.s))
+}
+
+var placeHolder = []byte{0}
+
+func (s *SQLiteStmt) bind(args []namedValue) error {
+ rv := C.sqlite3_reset(s.s)
+ if rv != C.SQLITE_ROW && rv != C.SQLITE_OK && rv != C.SQLITE_DONE {
+ return s.c.lastError()
+ }
+
+ bindIndices := make([][3]int, len(args))
+ prefixes := []string{":", "@", "$"}
+ for i, v := range args {
+ bindIndices[i][0] = args[i].Ordinal
+ if v.Name != "" {
+ for j := range prefixes {
+ cname := C.CString(prefixes[j] + v.Name)
+ bindIndices[i][j] = int(C.sqlite3_bind_parameter_index(s.s, cname))
+ C.free(unsafe.Pointer(cname))
+ }
+ args[i].Ordinal = bindIndices[i][0]
+ }
+ }
+
+ for i, arg := range args {
+ for j := range bindIndices[i] {
+ if bindIndices[i][j] == 0 {
+ continue
+ }
+ n := C.int(bindIndices[i][j])
+ switch v := arg.Value.(type) {
+ case nil:
+ rv = C.sqlite3_bind_null(s.s, n)
+ case string:
+ if len(v) == 0 {
+ rv = C._sqlite3_bind_text(s.s, n, (*C.char)(unsafe.Pointer(&placeHolder[0])), C.int(0))
+ } else {
+ b := []byte(v)
+ rv = C._sqlite3_bind_text(s.s, n, (*C.char)(unsafe.Pointer(&b[0])), C.int(len(b)))
+ }
+ case int64:
+ rv = C.sqlite3_bind_int64(s.s, n, C.sqlite3_int64(v))
+ case bool:
+ if v {
+ rv = C.sqlite3_bind_int(s.s, n, 1)
+ } else {
+ rv = C.sqlite3_bind_int(s.s, n, 0)
+ }
+ case float64:
+ rv = C.sqlite3_bind_double(s.s, n, C.double(v))
+ case []byte:
+ if v == nil {
+ rv = C.sqlite3_bind_null(s.s, n)
+ } else {
+ ln := len(v)
+ if ln == 0 {
+ v = placeHolder
+ }
+ rv = C._sqlite3_bind_blob(s.s, n, unsafe.Pointer(&v[0]), C.int(ln))
+ }
+ case time.Time:
+ b := []byte(v.Format(SQLiteTimestampFormats[0]))
+ rv = C._sqlite3_bind_text(s.s, n, (*C.char)(unsafe.Pointer(&b[0])), C.int(len(b)))
+ }
+ if rv != C.SQLITE_OK {
+ return s.c.lastError()
+ }
+ }
+ }
+ return nil
+}
+
+// Query the statement with arguments. Return records.
+func (s *SQLiteStmt) Query(args []driver.Value) (driver.Rows, error) {
+ list := make([]namedValue, len(args))
+ for i, v := range args {
+ list[i] = namedValue{
+ Ordinal: i + 1,
+ Value: v,
+ }
+ }
+ return s.query(context.Background(), list)
+}
+
+func (s *SQLiteStmt) query(ctx context.Context, args []namedValue) (driver.Rows, error) {
+ if err := s.bind(args); err != nil {
+ return nil, err
+ }
+
+ rows := &SQLiteRows{
+ s: s,
+ nc: int(C.sqlite3_column_count(s.s)),
+ cols: nil,
+ decltype: nil,
+ cls: s.cls,
+ closed: false,
+ ctx: ctx,
+ }
+
+ return rows, nil
+}
+
+// LastInsertId return last inserted ID.
+func (r *SQLiteResult) LastInsertId() (int64, error) {
+ return r.id, nil
+}
+
+// RowsAffected return how many rows affected.
+func (r *SQLiteResult) RowsAffected() (int64, error) {
+ return r.changes, nil
+}
+
+// Exec execute the statement with arguments. Return result object.
+func (s *SQLiteStmt) Exec(args []driver.Value) (driver.Result, error) {
+ list := make([]namedValue, len(args))
+ for i, v := range args {
+ list[i] = namedValue{
+ Ordinal: i + 1,
+ Value: v,
+ }
+ }
+ return s.exec(context.Background(), list)
+}
+
+func isInterruptErr(err error) bool {
+ sqliteErr, ok := err.(Error)
+ if ok {
+ return sqliteErr.Code == ErrInterrupt
+ }
+ return false
+}
+
+// exec executes a query that doesn't return rows. Attempts to honor context timeout.
+func (s *SQLiteStmt) exec(ctx context.Context, args []namedValue) (driver.Result, error) {
+ if ctx.Done() == nil {
+ return s.execSync(args)
+ }
+
+ type result struct {
+ r driver.Result
+ err error
+ }
+ resultCh := make(chan result)
+ go func() {
+ r, err := s.execSync(args)
+ resultCh <- result{r, err}
+ }()
+ var rv result
+ select {
+ case rv = <-resultCh:
+ case <-ctx.Done():
+ select {
+ case rv = <-resultCh: // no need to interrupt, operation completed in db
+ default:
+ // this is still racy and can be no-op if executed between sqlite3_* calls in execSync.
+ C.sqlite3_interrupt(s.c.db)
+ rv = <-resultCh // wait for goroutine completed
+ if isInterruptErr(rv.err) {
+ return nil, ctx.Err()
+ }
+ }
+ }
+ return rv.r, rv.err
+}
+
+func (s *SQLiteStmt) execSync(args []namedValue) (driver.Result, error) {
+ if err := s.bind(args); err != nil {
+ C.sqlite3_reset(s.s)
+ C.sqlite3_clear_bindings(s.s)
+ return nil, err
+ }
+
+ var rowid, changes C.longlong
+ rv := C._sqlite3_step_row_internal(s.s, &rowid, &changes)
+ if rv != C.SQLITE_ROW && rv != C.SQLITE_OK && rv != C.SQLITE_DONE {
+ err := s.c.lastError()
+ C.sqlite3_reset(s.s)
+ C.sqlite3_clear_bindings(s.s)
+ return nil, err
+ }
+
+ return &SQLiteResult{id: int64(rowid), changes: int64(changes)}, nil
+}
+
+// Readonly reports if this statement is considered readonly by SQLite.
+//
+// See: https://sqlite.org/c3ref/stmt_readonly.html
+func (s *SQLiteStmt) Readonly() bool {
+ return C.sqlite3_stmt_readonly(s.s) == 1
+}
+
+// Close the rows.
+func (rc *SQLiteRows) Close() error {
+ rc.s.mu.Lock()
+ if rc.s.closed || rc.closed {
+ rc.s.mu.Unlock()
+ return nil
+ }
+ rc.closed = true
+ if rc.cls {
+ rc.s.mu.Unlock()
+ return rc.s.Close()
+ }
+ rv := C.sqlite3_reset(rc.s.s)
+ if rv != C.SQLITE_OK {
+ rc.s.mu.Unlock()
+ return rc.s.c.lastError()
+ }
+ rc.s.mu.Unlock()
+ return nil
+}
+
+// Columns return column names.
+func (rc *SQLiteRows) Columns() []string {
+ rc.s.mu.Lock()
+ defer rc.s.mu.Unlock()
+ if rc.s.s != nil && rc.nc != len(rc.cols) {
+ rc.cols = make([]string, rc.nc)
+ for i := 0; i < rc.nc; i++ {
+ rc.cols[i] = C.GoString(C.sqlite3_column_name(rc.s.s, C.int(i)))
+ }
+ }
+ return rc.cols
+}
+
+func (rc *SQLiteRows) declTypes() []string {
+ if rc.s.s != nil && rc.decltype == nil {
+ rc.decltype = make([]string, rc.nc)
+ for i := 0; i < rc.nc; i++ {
+ rc.decltype[i] = strings.ToLower(C.GoString(C.sqlite3_column_decltype(rc.s.s, C.int(i))))
+ }
+ }
+ return rc.decltype
+}
+
+// DeclTypes return column types.
+func (rc *SQLiteRows) DeclTypes() []string {
+ rc.s.mu.Lock()
+ defer rc.s.mu.Unlock()
+ return rc.declTypes()
+}
+
+// Next move cursor to next. Attempts to honor context timeout from QueryContext call.
+func (rc *SQLiteRows) Next(dest []driver.Value) error {
+ rc.s.mu.Lock()
+ defer rc.s.mu.Unlock()
+
+ if rc.s.closed {
+ return io.EOF
+ }
+
+ if rc.ctx.Done() == nil {
+ return rc.nextSyncLocked(dest)
+ }
+ resultCh := make(chan error)
+ go func() {
+ resultCh <- rc.nextSyncLocked(dest)
+ }()
+ select {
+ case err := <-resultCh:
+ return err
+ case <-rc.ctx.Done():
+ select {
+ case <-resultCh: // no need to interrupt
+ default:
+ // this is still racy and can be no-op if executed between sqlite3_* calls in nextSyncLocked.
+ C.sqlite3_interrupt(rc.s.c.db)
+ <-resultCh // ensure goroutine completed
+ }
+ return rc.ctx.Err()
+ }
+}
+
+// nextSyncLocked moves cursor to next; must be called with locked mutex.
+func (rc *SQLiteRows) nextSyncLocked(dest []driver.Value) error {
+ rv := C._sqlite3_step_internal(rc.s.s)
+ if rv == C.SQLITE_DONE {
+ return io.EOF
+ }
+ if rv != C.SQLITE_ROW {
+ rv = C.sqlite3_reset(rc.s.s)
+ if rv != C.SQLITE_OK {
+ return rc.s.c.lastError()
+ }
+ return nil
+ }
+
+ rc.declTypes()
+
+ for i := range dest {
+ switch C.sqlite3_column_type(rc.s.s, C.int(i)) {
+ case C.SQLITE_INTEGER:
+ val := int64(C.sqlite3_column_int64(rc.s.s, C.int(i)))
+ switch rc.decltype[i] {
+ case columnTimestamp, columnDatetime, columnDate:
+ var t time.Time
+ // Assume a millisecond unix timestamp if it's 13 digits -- too
+ // large to be a reasonable timestamp in seconds.
+ if val > 1e12 || val < -1e12 {
+ val *= int64(time.Millisecond) // convert ms to nsec
+ t = time.Unix(0, val)
+ } else {
+ t = time.Unix(val, 0)
+ }
+ t = t.UTC()
+ if rc.s.c.loc != nil {
+ t = t.In(rc.s.c.loc)
+ }
+ dest[i] = t
+ case "boolean":
+ dest[i] = val > 0
+ default:
+ dest[i] = val
+ }
+ case C.SQLITE_FLOAT:
+ dest[i] = float64(C.sqlite3_column_double(rc.s.s, C.int(i)))
+ case C.SQLITE_BLOB:
+ p := C.sqlite3_column_blob(rc.s.s, C.int(i))
+ if p == nil {
+ dest[i] = []byte{}
+ continue
+ }
+ n := C.sqlite3_column_bytes(rc.s.s, C.int(i))
+ dest[i] = C.GoBytes(p, n)
+ case C.SQLITE_NULL:
+ dest[i] = nil
+ case C.SQLITE_TEXT:
+ var err error
+ var timeVal time.Time
+
+ n := int(C.sqlite3_column_bytes(rc.s.s, C.int(i)))
+ s := C.GoStringN((*C.char)(unsafe.Pointer(C.sqlite3_column_text(rc.s.s, C.int(i)))), C.int(n))
+
+ switch rc.decltype[i] {
+ case columnTimestamp, columnDatetime, columnDate:
+ var t time.Time
+ s = strings.TrimSuffix(s, "Z")
+ for _, format := range SQLiteTimestampFormats {
+ if timeVal, err = time.ParseInLocation(format, s, time.UTC); err == nil {
+ t = timeVal
+ break
+ }
+ }
+ if err != nil {
+ // The column is a time value, so return the zero time on parse failure.
+ t = time.Time{}
+ }
+ if rc.s.c.loc != nil {
+ t = t.In(rc.s.c.loc)
+ }
+ dest[i] = t
+ default:
+ dest[i] = s
+ }
+ }
+ }
+ return nil
+}
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