// Write writes data into a BLOB incrementally.
// (See http://sqlite.org/c3ref/blob_write.html)
func (w *BlobReadWriter) Write(v []byte) (int, error) {
if len(v) == 0 {
return 0, nil
}
size, err := w.Size()
if err != nil {
return 0, err
}
if w.WriteOffset >= size {
return 0, io.EOF
}
/* Write must return a non-nil error if it returns n < len(v) */
if len(v) > (size - w.WriteOffset) {
v = v[0 : size-w.WriteOffset]
err = io.EOF
}
p := &v[0]
n := len(v)
rv := C.sqlite3_blob_write(w.bl, unsafe.Pointer(p), C.int(n), C.int(w.WriteOffset))
if rv != C.SQLITE_OK {
return 0, w.c.error(rv, "BlobReadWiter.Write")
}
w.WriteOffset += n
return n, err
}
// Write writes data into a BLOB incrementally.
// (See http://sqlite.org/c3ref/blob_write.html)
func (w *BlobReadWriter) Write(v []byte) (int, error) {
if len(v) == 0 {
return 0, nil
}
size, err := w.Size()
if err != nil {
return 0, err
}
if w.offset >= size {
return 0, io.EOF
}
/* Write must return a non-nil error if it returns n < len(v) */
n := size - w.offset
if len(v) <= int(n) {
n = int32(len(v))
} else {
err = io.EOF
}
p := &v[0]
rv := C.sqlite3_blob_write(w.bl, unsafe.Pointer(p), C.int(n), C.int(w.offset))
if rv != C.SQLITE_OK {
return 0, w.c.error(rv, "BlobReadWiter.Write")
}
w.offset += n
return int(n), err
}