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path: root/vendor/github.com/mattn/go-sqlite3/sqlite3.go
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Diffstat (limited to 'vendor/github.com/mattn/go-sqlite3/sqlite3.go')
-rw-r--r--vendor/github.com/mattn/go-sqlite3/sqlite3.go235
1 files changed, 155 insertions, 80 deletions
diff --git a/vendor/github.com/mattn/go-sqlite3/sqlite3.go b/vendor/github.com/mattn/go-sqlite3/sqlite3.go
index de9d7d2..64933f1 100644
--- a/vendor/github.com/mattn/go-sqlite3/sqlite3.go
+++ b/vendor/github.com/mattn/go-sqlite3/sqlite3.go
@@ -114,12 +114,14 @@ import (
"strings"
"time"
"unsafe"
+
+ "golang.org/x/net/context"
)
-// 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.
+// 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.
@@ -139,20 +141,20 @@ func init() {
}
// Version returns SQLite library version information.
-func Version() (libVersion string, libVersionNumber int, sourceId string) {
+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
+ sourceID = C.GoString(C.sqlite3_sourceid())
+ return libVersion, libVersionNumber, sourceID
}
-// Driver struct.
+// SQLiteDriver implement sql.Driver.
type SQLiteDriver struct {
Extensions []string
ConnectHook func(*SQLiteConn) error
}
-// Conn struct.
+// SQLiteConn implement sql.Conn.
type SQLiteConn struct {
db *C.sqlite3
loc *time.Location
@@ -161,35 +163,34 @@ type SQLiteConn struct {
aggregators []*aggInfo
}
-// Tx struct.
+// SQLiteTx implemen sql.Tx.
type SQLiteTx struct {
c *SQLiteConn
}
-// Stmt struct.
+// SQLiteStmt implement sql.Stmt.
type SQLiteStmt struct {
c *SQLiteConn
s *C.sqlite3_stmt
- nv int
- nn []string
t string
closed bool
cls bool
}
-// Result struct.
+// SQLiteResult implement sql.Result.
type SQLiteResult struct {
id int64
changes int64
}
-// Rows struct.
+// SQLiteRows implement sql.Rows.
type SQLiteRows struct {
s *SQLiteStmt
nc int
cols []string
decltype []string
cls bool
+ done chan struct{}
}
type functionInfo struct {
@@ -295,19 +296,19 @@ func (ai *aggInfo) Done(ctx *C.sqlite3_context) {
// Commit transaction.
func (tx *SQLiteTx) Commit() error {
- _, err := tx.c.exec("COMMIT")
+ _, 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("ROLLBACK")
+ tx.c.exec(context.Background(), "ROLLBACK", nil)
}
return err
}
// Rollback transaction.
func (tx *SQLiteTx) Rollback() error {
- _, err := tx.c.exec("ROLLBACK")
+ _, err := tx.c.exec(context.Background(), "ROLLBACK", nil)
return err
}
@@ -381,13 +382,17 @@ func (c *SQLiteConn) RegisterFunc(name string, impl interface{}, pure bool) erro
if pure {
opts |= C.SQLITE_DETERMINISTIC
}
- rv := C._sqlite3_create_function(c.db, cname, C.int(numArgs), C.int(opts), C.uintptr_t(newHandle(c, &fi)), (*[0]byte)(unsafe.Pointer(C.callbackTrampoline)), nil, nil)
+ rv := sqlite3_create_function(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 sqlite3_create_function(db *C.sqlite3, zFunctionName *C.char, nArg C.int, eTextRep C.int, pApp uintptr, xFunc unsafe.Pointer, xStep unsafe.Pointer, xFinal unsafe.Pointer) C.int {
+ return C._sqlite3_create_function(db, zFunctionName, nArg, eTextRep, C.uintptr_t(pApp), (*[0]byte)(unsafe.Pointer(xFunc)), (*[0]byte)(unsafe.Pointer(xStep)), (*[0]byte)(unsafe.Pointer(xFinal)))
+}
+
// AutoCommit return which currently auto commit or not.
func (c *SQLiteConn) AutoCommit() bool {
return int(C.sqlite3_get_autocommit(c.db)) != 0
@@ -401,14 +406,22 @@ func (c *SQLiteConn) lastError() Error {
}
}
-// Implements Execer
+// Exec implements Execer.
func (c *SQLiteConn) Exec(query string, args []driver.Value) (driver.Result, error) {
- if len(args) == 0 {
- return c.exec(query)
+ 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(query)
+ s, err := c.prepare(ctx, query)
if err != nil {
return nil, err
}
@@ -418,12 +431,16 @@ func (c *SQLiteConn) Exec(query string, args []driver.Value) (driver.Result, err
if len(args) < na {
return nil, fmt.Errorf("Not enough args to execute query. Expected %d, got %d.", na, len(args))
}
- res, err = s.Exec(args[:na])
+ for i := 0; i < na; i++ {
+ args[i].Ordinal -= start
+ }
+ res, err = s.(*SQLiteStmt).exec(ctx, args[:na])
if err != nil && err != driver.ErrSkip {
s.Close()
return nil, err
}
args = args[na:]
+ start += na
}
tail := s.(*SQLiteStmt).t
s.Close()
@@ -434,10 +451,28 @@ func (c *SQLiteConn) Exec(query string, args []driver.Value) (driver.Result, err
}
}
-// Implements Queryer
+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 {
- s, err := c.Prepare(query)
+ s, err := c.prepare(ctx, query)
if err != nil {
return nil, err
}
@@ -446,12 +481,16 @@ func (c *SQLiteConn) Query(query string, args []driver.Value) (driver.Rows, erro
if len(args) < na {
return nil, fmt.Errorf("Not enough args to execute query. Expected %d, got %d.", na, len(args))
}
- rows, err := s.Query(args[:na])
+ for i := 0; i < na; i++ {
+ args[i].Ordinal -= start
+ }
+ rows, err := s.(*SQLiteStmt).query(ctx, args[:na])
if err != nil && err != driver.ErrSkip {
s.Close()
- return nil, err
+ return rows, err
}
args = args[na:]
+ start += na
tail := s.(*SQLiteStmt).t
if tail == "" {
return rows, nil
@@ -462,21 +501,13 @@ func (c *SQLiteConn) Query(query string, args []driver.Value) (driver.Rows, erro
}
}
-func (c *SQLiteConn) exec(cmd string) (driver.Result, error) {
- pcmd := C.CString(cmd)
- defer C.free(unsafe.Pointer(pcmd))
-
- var rowid, changes C.longlong
- rv := C._sqlite3_exec(c.db, pcmd, &rowid, &changes)
- if rv != C.SQLITE_OK {
- return nil, c.lastError()
- }
- return &SQLiteResult{int64(rowid), int64(changes)}, nil
-}
-
// Begin transaction.
func (c *SQLiteConn) Begin() (driver.Tx, error) {
- if _, err := c.exec(c.txlock); err != nil {
+ 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
@@ -507,7 +538,7 @@ func (d *SQLiteDriver) Open(dsn string) (driver.Conn, error) {
var loc *time.Location
txlock := "BEGIN"
- busy_timeout := 5000
+ busyTimeout := 5000
pos := strings.IndexRune(dsn, '?')
if pos >= 1 {
params, err := url.ParseQuery(dsn[pos+1:])
@@ -533,7 +564,7 @@ func (d *SQLiteDriver) Open(dsn string) (driver.Conn, error) {
if err != nil {
return nil, fmt.Errorf("Invalid _busy_timeout: %v: %v", val, err)
}
- busy_timeout = int(iv)
+ busyTimeout = int(iv)
}
// _txlock
@@ -570,7 +601,7 @@ func (d *SQLiteDriver) Open(dsn string) (driver.Conn, error) {
return nil, errors.New("sqlite succeeded without returning a database")
}
- rv = C.sqlite3_busy_timeout(db, C.int(busy_timeout))
+ rv = C.sqlite3_busy_timeout(db, C.int(busyTimeout))
if rv != C.SQLITE_OK {
return nil, Error{Code: ErrNo(rv)}
}
@@ -606,6 +637,10 @@ func (c *SQLiteConn) Close() error {
// 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
@@ -618,15 +653,7 @@ func (c *SQLiteConn) Prepare(query string) (driver.Stmt, error) {
if tail != nil && *tail != '\000' {
t = strings.TrimSpace(C.GoString(tail))
}
- nv := int(C.sqlite3_bind_parameter_count(s))
- var nn []string
- for i := 0; i < nv; i++ {
- pn := C.GoString(C.sqlite3_bind_parameter_name(s, C.int(i+1)))
- if len(pn) > 1 && pn[0] == '$' && 48 <= pn[1] && pn[1] <= 57 {
- nn = append(nn, C.GoString(C.sqlite3_bind_parameter_name(s, C.int(i+1))))
- }
- }
- ss := &SQLiteStmt{c: c, s: s, nv: nv, nn: nn, t: t}
+ ss := &SQLiteStmt{c: c, s: s, t: t}
runtime.SetFinalizer(ss, (*SQLiteStmt).Close)
return ss, nil
}
@@ -648,9 +675,9 @@ func (s *SQLiteStmt) Close() error {
return nil
}
-// Return a number of parameters.
+// NumInput return a number of parameters.
func (s *SQLiteStmt) NumInput() int {
- return s.nv
+ return int(C.sqlite3_bind_parameter_count(s.s))
}
type bindArg struct {
@@ -658,31 +685,23 @@ type bindArg struct {
v driver.Value
}
-func (s *SQLiteStmt) bind(args []driver.Value) error {
+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()
}
- var vargs []bindArg
- narg := len(args)
- vargs = make([]bindArg, narg)
- if len(s.nn) > 0 {
- for i, v := range s.nn {
- if pi, err := strconv.Atoi(v[1:]); err == nil {
- vargs[i] = bindArg{pi, args[i]}
- }
- }
- } else {
- for i, v := range args {
- vargs[i] = bindArg{i + 1, v}
+ for i, v := range args {
+ if v.Name != "" {
+ cname := C.CString(":" + v.Name)
+ args[i].Ordinal = int(C.sqlite3_bind_parameter_index(s.s, cname))
+ C.free(unsafe.Pointer(cname))
}
}
- for _, varg := range vargs {
- n := C.int(varg.n)
- v := varg.v
- switch v := v.(type) {
+ for _, arg := range args {
+ n := C.int(arg.Ordinal)
+ switch v := arg.Value.(type) {
case nil:
rv = C.sqlite3_bind_null(s.s, n)
case string:
@@ -722,29 +741,81 @@ func (s *SQLiteStmt) bind(args []driver.Value) error {
// 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
}
- return &SQLiteRows{s, int(C.sqlite3_column_count(s.s)), nil, nil, s.cls}, nil
+
+ rows := &SQLiteRows{
+ s: s,
+ nc: int(C.sqlite3_column_count(s.s)),
+ cols: nil,
+ decltype: nil,
+ cls: s.cls,
+ done: make(chan struct{}),
+ }
+
+ go func() {
+ select {
+ case <-ctx.Done():
+ C.sqlite3_interrupt(s.c.db)
+ rows.Close()
+ case <-rows.done:
+ }
+ }()
+
+ return rows, nil
}
-// Return last inserted ID.
+// LastInsertId teturn last inserted ID.
func (r *SQLiteResult) LastInsertId() (int64, error) {
return r.id, nil
}
-// Return how many rows affected.
+// RowsAffected return how many rows affected.
func (r *SQLiteResult) RowsAffected() (int64, error) {
return r.changes, nil
}
-// Execute the statement with arguments. Return result object.
+// 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 (s *SQLiteStmt) exec(ctx context.Context, 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
}
+
+ done := make(chan struct{})
+ defer close(done)
+ go func() {
+ select {
+ case <-ctx.Done():
+ C.sqlite3_interrupt(s.c.db)
+ case <-done:
+ }
+ }()
+
var rowid, changes C.longlong
rv := C._sqlite3_step(s.s, &rowid, &changes)
if rv != C.SQLITE_ROW && rv != C.SQLITE_OK && rv != C.SQLITE_DONE {
@@ -753,7 +824,8 @@ func (s *SQLiteStmt) Exec(args []driver.Value) (driver.Result, error) {
C.sqlite3_clear_bindings(s.s)
return nil, err
}
- return &SQLiteResult{int64(rowid), int64(changes)}, nil
+
+ return &SQLiteResult{id: int64(rowid), changes: int64(changes)}, nil
}
// Close the rows.
@@ -761,6 +833,9 @@ func (rc *SQLiteRows) Close() error {
if rc.s.closed {
return nil
}
+ if rc.done != nil {
+ close(rc.done)
+ }
if rc.cls {
return rc.s.Close()
}
@@ -771,7 +846,7 @@ func (rc *SQLiteRows) Close() error {
return nil
}
-// Return column names.
+// Columns return column names.
func (rc *SQLiteRows) Columns() []string {
if rc.nc != len(rc.cols) {
rc.cols = make([]string, rc.nc)
@@ -782,7 +857,7 @@ func (rc *SQLiteRows) Columns() []string {
return rc.cols
}
-// Return column types.
+// DeclTypes return column types.
func (rc *SQLiteRows) DeclTypes() []string {
if rc.decltype == nil {
rc.decltype = make([]string, rc.nc)
@@ -793,7 +868,7 @@ func (rc *SQLiteRows) DeclTypes() []string {
return rc.decltype
}
-// Move cursor to next.
+// Next move cursor to next.
func (rc *SQLiteRows) Next(dest []driver.Value) error {
rv := C.sqlite3_step(rc.s.s)
if rv == C.SQLITE_DONE {
generated by cgit v1.2.3 (git 2.25.1) at 2024-04-25 17:27:32 +0000