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()
}
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 _, 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:
if len(v) == 0 {
b := []byte{0}
rv = C._sqlite3_bind_text(s.s, n, (*C.char)(unsafe.Pointer(&b[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 bool(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 len(v) == 0 {
rv = C._sqlite3_bind_blob(s.s, n, nil, 0)
} else {
rv = C._sqlite3_bind_blob(s.s, n, unsafe.Pointer(&v[0]), C.int(len(v)))
}
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
}
// BindParameterIndex returns the index of a parameter with a given name (cached).
// The first host parameter has an index of 1, not 0.
// (See http://sqlite.org/c3ref/bind_parameter_index.html)
func (s *Stmt) BindParameterIndex(name string) (int, error) {
if s.params == nil {
count := s.BindParameterCount()
s.params = make(map[string]int, count)
}
index, ok := s.params[name]
if ok {
return index, nil
}
cname := C.CString(name)
index = int(C.sqlite3_bind_parameter_index(s.stmt, cname))
C.free(unsafe.Pointer(cname))
if index == 0 {
return index, s.specificError("invalid parameter name: %q", name)
}
s.params[name] = index
return index, nil
}