[libgpiod v2][PATCH v4 0/4] bindings: implement python bindings for libgpiod v2

[Bartosz Golaszewski <brgl@bgdev.pl>]

This is the fourth iteration of python bindings for libgpiod v2.

The code has been split into high-level python and low-level C layers
with the latter only doing the bare minimum.

The data model is mostly based on the C++ one with the main difference
being utilizing dynamic typing and keyword arguments in place of the
builder pattern. That allows us to reduce the number of methods and
objects.

Because python doesn't have RAII, unlike C++, we provide a module-level
request_lines() helper as gpiod.Chip(path).request_lines(...) one-liner
could lead to the chip left dangling even after the last reference is
dropped.

Because python forces us to dynamically allocate objects all the time even
for fundamental types (which are also immutable) there's no point in trying
to replicate the edge-event buffer. Instead LineRequest.read_edge_event()
just returns a list of events.

v3 -> v4:
- use list and dict comprehensions where applicable
- add a helper for detecting GPIO devices in examples
- remove commented out code
- fix whitespace errors
- cache chip_info in the chip object
- rename Chip.map_line() to Chip.line_name_from_id()
- disallow repeating line offsets/names as well as offset-name conflicts in request configs
- don't modify python objects with GIL released (self->chip assignment)
- fix type conversion strings
- fix error check in request_offsets()
- fix type comparison warnings

Bartosz Golaszewski (4):
  bindings: python: remove old version
  bindings: python: add examples
  bindings: python: add tests
  bindings: python: implement python bindings for libgpiod v2

 bindings/python/.gitignore                   |    8 +
 bindings/python/Makefile.am                  |   26 +-
 bindings/python/examples/Makefile.am         |   16 +-
 bindings/python/examples/gpiodetect.py       |   17 +-
 bindings/python/examples/gpiofind.py         |   14 +-
 bindings/python/examples/gpioget.py          |   32 +-
 bindings/python/examples/gpioinfo.py         |   38 +-
 bindings/python/examples/gpiomon.py          |   50 +-
 bindings/python/examples/gpioset.py          |   45 +-
 bindings/python/examples/helpers.py          |   15 +
 bindings/python/gpiod/Makefile.am            |   17 +
 bindings/python/gpiod/__init__.py            |   53 +
 bindings/python/gpiod/chip.py                |  329 +++
 bindings/python/gpiod/chip_info.py           |   21 +
 bindings/python/gpiod/edge_event.py          |   46 +
 bindings/python/gpiod/exception.py           |   20 +
 bindings/python/gpiod/ext/Makefile.am        |   11 +
 bindings/python/gpiod/ext/chip.c             |  339 +++
 bindings/python/gpiod/ext/common.c           |   92 +
 bindings/python/gpiod/ext/internal.h         |   21 +
 bindings/python/gpiod/ext/line-config.c      |  133 +
 bindings/python/gpiod/ext/line-settings.c    |  130 +
 bindings/python/gpiod/ext/module.c           |  193 ++
 bindings/python/gpiod/ext/request.c          |  402 +++
 bindings/python/gpiod/info_event.py          |   33 +
 bindings/python/gpiod/internal.py            |   19 +
 bindings/python/gpiod/line.py                |   56 +
 bindings/python/gpiod/line_info.py           |   73 +
 bindings/python/gpiod/line_request.py        |  247 ++
 bindings/python/gpiod/line_settings.py       |   62 +
 bindings/python/gpiodmodule.c                | 2662 ------------------
 bindings/python/setup.py                     |   47 +
 bindings/python/tests/Makefile.am            |   26 +-
 bindings/python/tests/__init__.py            |   17 +
 bindings/python/tests/__main__.py            |   16 +
 bindings/python/tests/gpiod_py_test.py       |  832 ------
 bindings/python/tests/gpiomockupmodule.c     |  309 --
 bindings/python/tests/gpiosim/Makefile.am    |    7 +
 bindings/python/tests/gpiosim/__init__.py    |    4 +
 bindings/python/tests/gpiosim/chip.py        |   65 +
 bindings/python/tests/gpiosim/ext.c          |  345 +++
 bindings/python/tests/helpers.py             |   16 +
 bindings/python/tests/tests_chip.py          |  231 ++
 bindings/python/tests/tests_chip_info.py     |   52 +
 bindings/python/tests/tests_edge_event.py    |  212 ++
 bindings/python/tests/tests_info_event.py    |  189 ++
 bindings/python/tests/tests_line_info.py     |  101 +
 bindings/python/tests/tests_line_request.py  |  485 ++++
 bindings/python/tests/tests_line_settings.py |   79 +
 bindings/python/tests/tests_module.py        |   59 +
 configure.ac                                 |    3 +
 51 files changed, 4386 insertions(+), 3929 deletions(-)
 create mode 100644 bindings/python/.gitignore
 create mode 100644 bindings/python/examples/helpers.py
 create mode 100644 bindings/python/gpiod/Makefile.am
 create mode 100644 bindings/python/gpiod/__init__.py
 create mode 100644 bindings/python/gpiod/chip.py
 create mode 100644 bindings/python/gpiod/chip_info.py
 create mode 100644 bindings/python/gpiod/edge_event.py
 create mode 100644 bindings/python/gpiod/exception.py
 create mode 100644 bindings/python/gpiod/ext/Makefile.am
 create mode 100644 bindings/python/gpiod/ext/chip.c
 create mode 100644 bindings/python/gpiod/ext/common.c
 create mode 100644 bindings/python/gpiod/ext/internal.h
 create mode 100644 bindings/python/gpiod/ext/line-config.c
 create mode 100644 bindings/python/gpiod/ext/line-settings.c
 create mode 100644 bindings/python/gpiod/ext/module.c
 create mode 100644 bindings/python/gpiod/ext/request.c
 create mode 100644 bindings/python/gpiod/info_event.py
 create mode 100644 bindings/python/gpiod/internal.py
 create mode 100644 bindings/python/gpiod/line.py
 create mode 100644 bindings/python/gpiod/line_info.py
 create mode 100644 bindings/python/gpiod/line_request.py
 create mode 100644 bindings/python/gpiod/line_settings.py
 delete mode 100644 bindings/python/gpiodmodule.c
 create mode 100644 bindings/python/setup.py
 create mode 100644 bindings/python/tests/__init__.py
 create mode 100644 bindings/python/tests/__main__.py
 delete mode 100755 bindings/python/tests/gpiod_py_test.py
 delete mode 100644 bindings/python/tests/gpiomockupmodule.c
 create mode 100644 bindings/python/tests/gpiosim/Makefile.am
 create mode 100644 bindings/python/tests/gpiosim/__init__.py
 create mode 100644 bindings/python/tests/gpiosim/chip.py
 create mode 100644 bindings/python/tests/gpiosim/ext.c
 create mode 100644 bindings/python/tests/helpers.py
 create mode 100644 bindings/python/tests/tests_chip.py
 create mode 100644 bindings/python/tests/tests_chip_info.py
 create mode 100644 bindings/python/tests/tests_edge_event.py
 create mode 100644 bindings/python/tests/tests_info_event.py
 create mode 100644 bindings/python/tests/tests_line_info.py
 create mode 100644 bindings/python/tests/tests_line_request.py
 create mode 100644 bindings/python/tests/tests_line_settings.py
 create mode 100644 bindings/python/tests/tests_module.py

-- 
2.34.1