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py/stream: Allow to reuse is_nonblocking_error().

pull/1485/merge
Paul Sokolovsky 2015-10-18 15:37:19 +03:00
rodzic 2ca7b05552
commit 7799410950
2 zmienionych plików z 14 dodań i 14 usunięć
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20
py/stream.c
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@ -47,14 +47,6 @@
STATIC mp_obj_t stream_readall(mp_obj_t self_in);
#if MICROPY_STREAMS_NON_BLOCK
// TODO: This is POSIX-specific (but then POSIX is the only real thing,
// and anything else just emulates it, right?)
#define is_nonblocking_error(errno) ((errno) == EAGAIN || (errno) == EWOULDBLOCK)
#else
#define is_nonblocking_error(errno) (0)
#endif
#define STREAM_CONTENT_TYPE(stream) (((stream)->is_text) ? &mp_type_str : &mp_type_bytes)
STATIC mp_obj_t stream_read(mp_uint_t n_args, const mp_obj_t *args) {
@ -96,7 +88,7 @@ STATIC mp_obj_t stream_read(mp_uint_t n_args, const mp_obj_t *args) {
mp_uint_t out_sz = o->type->stream_p->read(o, p, more_bytes, &error);
if (out_sz == MP_STREAM_ERROR) {
vstr_cut_tail_bytes(&vstr, more_bytes);
if (is_nonblocking_error(error)) {
if (mp_is_nonblocking_error(error)) {
// With non-blocking streams, we read as much as we can.
// If we read nothing, return None, just like read().
// Otherwise, return data read so far.
@ -167,7 +159,7 @@ STATIC mp_obj_t stream_read(mp_uint_t n_args, const mp_obj_t *args) {
mp_uint_t out_sz = o->type->stream_p->read(o, vstr.buf, sz, &error);
if (out_sz == MP_STREAM_ERROR) {
vstr_clear(&vstr);
if (is_nonblocking_error(error)) {
if (mp_is_nonblocking_error(error)) {
// https://docs.python.org/3.4/library/io.html#io.RawIOBase.read
// "If the object is in non-blocking mode and no bytes are available,
// None is returned."
@ -192,7 +184,7 @@ mp_obj_t mp_stream_write(mp_obj_t self_in, const void *buf, mp_uint_t len) {
int error;
mp_uint_t out_sz = o->type->stream_p->write(self_in, buf, len, &error);
if (out_sz == MP_STREAM_ERROR) {
if (is_nonblocking_error(error)) {
if (mp_is_nonblocking_error(error)) {
// http://docs.python.org/3/library/io.html#io.RawIOBase.write
// "None is returned if the raw stream is set not to block and
// no single byte could be readily written to it."
@ -235,7 +227,7 @@ STATIC mp_obj_t stream_readinto(mp_uint_t n_args, const mp_obj_t *args) {
int error;
mp_uint_t out_sz = o->type->stream_p->read(o, bufinfo.buf, len, &error);
if (out_sz == MP_STREAM_ERROR) {
if (is_nonblocking_error(error)) {
if (mp_is_nonblocking_error(error)) {
return mp_const_none;
}
nlr_raise(mp_obj_new_exception_arg1(&mp_type_OSError, MP_OBJ_NEW_SMALL_INT(error)));
@ -260,7 +252,7 @@ STATIC mp_obj_t stream_readall(mp_obj_t self_in) {
int error;
mp_uint_t out_sz = o->type->stream_p->read(self_in, p, current_read, &error);
if (out_sz == MP_STREAM_ERROR) {
if (is_nonblocking_error(error)) {
if (mp_is_nonblocking_error(error)) {
// With non-blocking streams, we read as much as we can.
// If we read nothing, return None, just like read().
// Otherwise, return data read so far.
@ -321,7 +313,7 @@ STATIC mp_obj_t stream_unbuffered_readline(mp_uint_t n_args, const mp_obj_t *arg
int error;
mp_uint_t out_sz = o->type->stream_p->read(o, p, 1, &error);
if (out_sz == MP_STREAM_ERROR) {
if (is_nonblocking_error(error)) {
if (mp_is_nonblocking_error(error)) {
if (vstr.len == 1) {
// We just incremented it, but otherwise we read nothing
// and immediately got EAGAIN. This is case is not well

8
py/stream.h
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@ -42,4 +42,12 @@ mp_obj_t mp_stream_unbuffered_iter(mp_obj_t self);
mp_obj_t mp_stream_write(mp_obj_t self_in, const void *buf, mp_uint_t len);
#if MICROPY_STREAMS_NON_BLOCK
// TODO: This is POSIX-specific (but then POSIX is the only real thing,
// and anything else just emulates it, right?)
#define mp_is_nonblocking_error(errno) ((errno) == EAGAIN || (errno) == EWOULDBLOCK)
#else
#define mp_is_nonblocking_error(errno) (0)
#endif
#endif // __MICROPY_INCLUDED_PY_STREAM_H__