Hi,
I've had some success prototyping the below idea on a few utilities. See
https://github.com/OSGeo/gdal/pull/9445 for details
Even
Le 08/03/2024 à 16:40, Even Rouault via gdal-dev a écrit :
Hi,
Our command line C++ utilities use ad-hoc manual parsing, which means
that:
- the usage message must be manually composed,
- you must take care to check that there are enough remaining
arguments for the ones that take value to avoid out-of-bounds accesses
(tests like argc + 1 < argn)
- detection for duplicated arguments when only a single occurrence is
allowed must be manually done, nd thus is often not done, confusing
users, cf https://github.com/OSGeo/gdal/issues/9415
- etc.
I've come across https://github.com/p-ranav/argparse which fit all my
requirements at first sight: compatible with our C++ requirements
(C++17), MIT license, easily usable (single header), well documented,
and enough feature-full. From a quick testing, it seems to work well.
It looks also as it has taken some inspiration from the Python
argparse module.
I'd be tempted to give that a try to retrofit our existing utilities
(probably starting with the ones with the less options :-)). Opinions?
I guess there must be a plethora of similar projects, due to the
absence of a std::argparse module... At least I see it is in the list
of (9) alternatives mentioned at
https://en.cppreference.com/w/cpp/links/libs?source=post_page---------------------------#Configuration:Command_Line
CLI11 looked like a candidate too, but reading
https://github.com/CLIUtils/CLI11?tab=readme-ov-file#features-not-supported-by-this-library
"There are some other possible "features" that are intentionally not
supported by this library:... Non-standard variations on syntax, like
|-long| options. This is non-standard and should be avoided, so that
is enforced by this library." . Fair enough, but we use that
extensively in GDAL.
Even
--
http://www.spatialys.com
My software is free, but my time generally not.
_______________________________________________
gdal-dev mailing list
gdal-dev@lists.osgeo.org
https://lists.osgeo.org/mailman/listinfo/gdal-dev
--
http://www.spatialys.com
My software is free, but my time generally not.
_______________________________________________
gdal-dev mailing list
gdal-dev@lists.osgeo.org
https://lists.osgeo.org/mailman/listinfo/gdal-dev
