diff options
Diffstat (limited to 'py')
| -rw-r--r-- | py/stream.c | 12 | ||||
| -rw-r--r-- | py/stream.h | 1 |
2 files changed, 13 insertions, 0 deletions
diff --git a/py/stream.c b/py/stream.c index aa905ca8c..e008fb999 100644 --- a/py/stream.c +++ b/py/stream.c @@ -82,6 +82,18 @@ mp_uint_t mp_stream_rw(mp_obj_t stream, void *buf_, mp_uint_t size, int *errcode return done; } +mp_uint_t mp_stream_seek(mp_obj_t stream, mp_off_t offset, int whence, int *errcode) { + struct mp_stream_seek_t seek_s; + seek_s.offset = offset; + seek_s.whence = whence; + const mp_stream_p_t *stream_p = mp_get_stream(stream); + mp_uint_t res = stream_p->ioctl(MP_OBJ_FROM_PTR(stream), MP_STREAM_SEEK, (mp_uint_t)(uintptr_t)&seek_s, errcode); + if (res == MP_STREAM_ERROR) { + return -1; + } + return seek_s.offset; +} + const mp_stream_p_t *mp_get_stream_raise(mp_obj_t self_in, int flags) { const mp_obj_type_t *type = mp_obj_get_type(self_in); if (MP_OBJ_TYPE_HAS_SLOT(type, protocol)) { diff --git a/py/stream.h b/py/stream.h index e6e6f283d..7c2e87a87 100644 --- a/py/stream.h +++ b/py/stream.h @@ -115,6 +115,7 @@ mp_obj_t mp_stream_write(mp_obj_t self_in, const void *buf, size_t len, byte fla mp_uint_t mp_stream_rw(mp_obj_t stream, void *buf, mp_uint_t size, int *errcode, byte flags); #define mp_stream_write_exactly(stream, buf, size, err) mp_stream_rw(stream, (byte *)buf, size, err, MP_STREAM_RW_WRITE) #define mp_stream_read_exactly(stream, buf, size, err) mp_stream_rw(stream, buf, size, err, MP_STREAM_RW_READ) +mp_uint_t mp_stream_seek(mp_obj_t stream, mp_off_t offset, int whence, int *errcode); void mp_stream_write_adaptor(void *self, const char *buf, size_t len); |