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Description:

ctypesgen 1.1.1

ctypesgen
---------

(c) Ctypesgen developers 2007-2022
https://github.com/ctypesgen/ctypesgen

ctypesgen is a pure-python ctypes wrapper generator. It parses C header files
and creates a wrapper for libraries based on what it finds.
Preprocessor macros are handled in a manner consistent with typical C code.
Preprocessor macro functions are translated into Python functions that are then
made available to the user of the newly-generated Python wrapper library.
It can also output JSON, which can be used with Mork, which generates bindings
for Lua, using the alien module (which binds libffi to Lua).
Documentation
See https://github.com/ctypesgen/ctypesgen/wiki for full documentation.
Run ctypesgen --help for full range of available options.
Installation
ctypesgen can be installed by pip install ctypesgen. It requires Python 3.7
to run.
Basic Usage
This project automatically generates ctypes wrappers for header files written
in C.
For example, if you'd like to generate Neon bindings, you can do so using this
recipe (using a standard pip install):
ctypesgen -lneon /usr/local/include/neon/ne_*.h -o neon.py

Some libraries, such as APR, need special flags to compile. You can pass these
flags in on the command line.
For example:
FLAGS = `apr-1-config --cppflags --includes`
ctypesgen $FLAGS -llibapr-1.so $HOME/include/apr-1/apr*.h -o apr.py

Sometimes, libraries will depend on each other. You can specify these
dependencies using -mmodule, where module is the name of the dependency module.
Here's an example for apr_util:
ctypesgen $FLAGS -llibaprutil-1.so $HOME/include/apr-1/ap[ru]*.h \
-mapr -o apr_util.py

If you want JSON output (e.g. for generating Lua bindings), use
--output-language=json

When outputting JSON, you will probably also want to use
--all-headers --builtin-symbols --no-stddef-types --no-gnu-types
--no-python-types

Related Software of Interest
libffi is a portable Foreign Function Interface library:
http://sources.redhat.com/libffi/
Mork, the friendly alien, can be found at:
https://github.com/rrthomas/mork
License
ctypesgen is distributed under the New (2-clause) BSD License:
http://www.opensource.org/licenses/bsd-license.php
Copyright (c) 2007-2022, Ctypesgen Developers
All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:

Redistributions of source code must retain the above copyright notice,
this list of conditions and the following disclaimer.
Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
POSSIBILITY OF SUCH DAMAGE.
Change Log
v1.1.1

Fixed inconsistency in version output in released packages

v1.1.0
This release has a number of bug fixes in addition to a few new features.
Following a complete transition to Python 3, with dropped Python 2 support,
major work was made towards code modernization and quality.

The code is now Black formatted and Flake8 tested
Greatly improved unittest framework
Embedded PLY version updated to 3.11
New option: --no-embed-preamble create separate files for preamble and
loader instead of embedding in each output file
New option: --allow-gnu-c do not undefine __GNUC__
Fixed library loader search path on macOS
Fixed rare bug, processing (legacy) header files with MacRoman encoding
on macOS
Added full support for floating and integer constants
Added support for sized integer types on Windows
Added support to handle restrict and _Noreturn keywords
Added name formats to posix library loader
Fixed mapping of 'short int' to c_short
Git tags are now using x.y.z format

v1.0.2
Many issues fixed. Parse gcc attributes more
Implements automatic calling convention selection based on gcc attributes for
stdcall/cdecl.

Simplify and unify library loader for various platforms. Improve library path
searches on Linux (parsed ld.so.conf includes now).
First implementaion of #pragma pack
First implemenation of #undef
Adds several command line options:
-D --define
-U --undefine
--no-undefs
-P --strip-prefix
--debug-level

v1.0.1
Fix handling of function prototypes
Other minor improvments included.
v1.0.0
Py2/Py3 support
Various development branches merged back
In addition to the various developments from the different branches, this
tag also represents a code state that:

ties in with Travis CI to watch code developments
improves testsuite, including moving all JSON tests to testsuite
includes a decent Debian package build configuration
automatically creates a man page to be included in the Debian package