Commit Graph

30 Commits

Author SHA1 Message Date
Damien George
304cfda8c4 py/stream: Move ad-hoc ioctl constants to stream.h and rename them.
The constants MP_IOCTL_POLL_xxx, which were stmhal-specific, are moved
from stmhal/pybioctl.h (now deleted) to py/stream.h.  And they are renamed
to MP_STREAM_POLL_xxx to be consistent with other such constants.

All uses of these constants have been updated.
2016-12-02 16:37:29 +11:00
Paul Sokolovsky
59a1201da9 all: Remove readall() method, which is equivalent to read() w/o args.
Its addition was due to an early exploration on how to add CPython-like
stream interface. It's clear that it's not needed and just takes up
bytes in all ports.
2016-11-14 00:24:22 +03:00
Damien George
4ebdb1f2b2 py: Be more specific with MP_DECLARE_CONST_FUN_OBJ macros.
In order to have more fine-grained control over how builtin functions are
constructed, the MP_DECLARE_CONST_FUN_OBJ macros are made more specific,
with suffix of _0, _1, _2, _3, _VAR, _VAR_BETEEN or _KW.  These names now
match the MP_DEFINE_CONST_FUN_OBJ macros.
2016-10-21 16:26:01 +11:00
Paul Sokolovsky
61e77a4e88 py/mpconfig.h: Add MICROPY_STREAMS_POSIX_API setting.
To filter out even prototypes of mp_stream_posix_*() functions, which
require POSIX types like ssize_t & off_t, which may be not available in
some ports.
2016-07-30 20:05:56 +03:00
Paul Sokolovsky
4f1b0292db py/stream: Add adapter methods with POSIX-compatible signatures.
Previoussly such read() and write() methods were used by modussl_axtls,
move to py/stream for reuse.
2016-07-30 00:25:06 +03:00
Paul Sokolovsky
a60b0263ba py/stream: Implement generic flush() method, in terms of C-level ioctl. 2016-07-27 00:39:10 +03:00
Paul Sokolovsky
f2f761c0c3 py/stream: Stream module works with errno's, so should include mperrno.h. 2016-07-26 15:05:15 +03:00
Paul Sokolovsky
16f324641f py/stream.h: Remove dated comment of POSIX-specificity of EAGAIN.
We have adopted POSIX-compatible error numbers as MicroPython's native.
2016-07-25 00:47:00 +03:00
Paul Sokolovsky
1a7e28d8b7 py/stream.h: Move mp_stream_write_adaptor() inside ifdef block. 2016-07-25 00:16:51 +03:00
Paul Sokolovsky
497660fcda py/stream: Add mp_stream_close() helper function. 2016-05-20 21:18:49 +03:00
Paul Sokolovsky
7f7c84b10a py/stream: Support both "exact size" and "one underlying call" operations.
Both read and write operations support variants where either a) a single
call is made to the undelying stream implementation and returned buffer
length may be less than requested, or b) calls are repeated until requested
amount of data is collected, shorter amount is returned only in case of
EOF or error.

These operations are available from the level of C support functions to be
used by other C modules to implementations of Python methods to be used in
user-facing objects.

The rationale of these changes is to allow to write concise and robust
code to work with *blocking* streams of types prone to short reads, like
serial interfaces and sockets. Particular object types may select "exact"
vs "once" types of methods depending on their needs. E.g., for sockets,
revc() and send() methods continue to be "once", while read() and write()
thus converted to "exactly" versions.

These changes don't affect non-blocking handling, e.g. trying "exact"
method on the non-blocking socket will return as much data as available
without blocking. No data available is continued to be signaled as None
return value to read() and write().

From the point of view of CPython compatibility, this model is a cross
between its io.RawIOBase and io.BufferedIOBase abstract classes. For
blocking streams, it works as io.BufferedIOBase model (guaranteeing
lack of short reads/writes), while for non-blocking - as io.RawIOBase,
returning None in case of lack of data (instead of raising expensive
exception, as required by io.BufferedIOBase). Such a cross-behavior
should be optimal for MicroPython needs.
2016-05-18 02:41:45 +03:00
Paul Sokolovsky
0c97e4c414 py/stream: Add Python-level ioctl() method.
Will call underlying C virtual methods of stream interface. This isn't
intended to be added to every stream object (it's not in CPython), but
is convenient way to expose extra operation on Python side without
adding bunch of Python-level methods.
2016-04-10 12:45:46 +03:00
Paul Sokolovsky
a45e280c58 py/stream.h: Add bigger inventory of stream ioctl's. 2016-04-10 12:42:41 +03:00
Paul Sokolovsky
e6a4d4e23c py: Move stream-related declarations from obj.h to stream.h. 2016-04-05 22:06:52 +03:00
Paul Sokolovsky
d4c8e626f2 py/stream: Add mp_stream_writeall() helper function.
Spools entire output buffer to a blocking stream (chunk by chunk if
needed).
2016-03-24 19:09:00 +02:00
Damien George
e84325bd1d py: Add mp_get_stream_raise to factor out check for stream methods. 2015-12-09 18:47:43 +00:00
Damien George
999cedb90f py: Wrap all obj-ptr conversions in MP_OBJ_TO_PTR/MP_OBJ_FROM_PTR.
This allows the mp_obj_t type to be configured to something other than a
pointer-sized primitive type.

This patch also includes additional changes to allow the code to compile
when sizeof(mp_uint_t) != sizeof(void*), such as using size_t instead of
mp_uint_t, and various casts.
2015-11-29 14:25:35 +00:00
Damien George
4e7107a572 py: Change mp_print_strn_t func type to use size_t for the str length. 2015-11-29 14:25:04 +00:00
Paul Sokolovsky
7799410950 py/stream: Allow to reuse is_nonblocking_error(). 2015-10-18 15:39:33 +03:00
blmorris
bdd78c31b6 py: Add stream_tell method, and use for unix and stmhal file tell. 2015-08-13 22:56:32 +01:00
Damien George
51dfcb4bb7 py: Move to guarded includes, everywhere in py/ core.
Addresses issue #1022.
2015-01-01 20:32:09 +00:00
Paul Sokolovsky
838eb1fa2d stream: Implement seek operation support via ioctl, wrapped in generic method.
Also, implement for unix port.
2014-11-17 00:16:14 +02:00
Paul Sokolovsky
1a55b6a787 unix, stmhal: Implement file.readinto() method.
Also, usocket.readinto(). Known issue is that .readinto() should be available
only for binary files, but micropython uses single method table for both
binary and text files.
2014-10-18 22:44:07 +03:00
Paul Sokolovsky
ac736f15c9 stream: Factor out mp_stream_write() method to write a memstring to stream. 2014-07-13 23:14:32 +03:00
Damien George
04b9147e15 Add license header to (almost) all files.
Blanket wide to all .c and .h files.  Some files originating from ST are
difficult to deal with (license wise) so it was left out of those.

Also merged modpyb.h, modos.h, modstm.h and modtime.h in stmhal/.
2014-05-03 23:27:38 +01:00
Damien George
d5f5b2f766 py, stream: Implement readlines for a stream. 2014-05-03 22:01:32 +01:00
Paul Sokolovsky
d54bef7692 stream: Add generic unbuffered iternext method.
Uses stream_unbuffered_readline underline.
2014-01-20 18:42:08 +02:00
Paul Sokolovsky
9953ca432b Add unbuffered readline() implementation for Raw I/O files. 2014-01-15 23:43:25 +02:00
Paul Sokolovsky
5225450b9f Add generic impl of stream .readall() method. Use one for unix io.FileIO. 2014-01-13 23:31:06 +02:00
Paul Sokolovsky
e98cf40c34 Add generic implementations of Python read()/write methods for streams.
These can be used for any object which implements stream protocol
(mp_stream_p_t).
2014-01-08 17:38:38 +02:00