[PATCH v4 0/8] add new command line argument parsing library

[Euan Bourke <euan.bourke@intel.com>]

A recent thread on the mailing list[1] discussed corelist and coremask
parsing and the idea of a new library dedicated to command line parsing
was mentioned[2]. This patchset adds the library, along with the new
APIs, and edits the existing EAL, DLB2 driver and some example
application functions to use these APIs, rather than each implementing
their own copies.

The new APIs work similar to the existing functions in EAL, however
instead of filling a core array like this:
[1, -1, -1, 2, 3] (a non -1 refers to an 'active core' at that index)
It fills it like this:
[0, 3, 4] (with the value at each index being an 'active core').

The new APIs will also return the number of cores contained in the
passed corelist/coremask, so in the above example, 3 would be returned.

Also included in this patchest is a heuristic parser which searches
for key markers in the core string, returning a enum value based off
this search to indicate if a parameter is likely a coremask or a
corelist. This heuristic function is also wrapped in a parser
function allowing apps to handle both coremasks and corelists
simultaneously.

[1] https://mails.dpdk.org/archives/dev/2023-November/280957.html
[2] https://mails.dpdk.org/archives/dev/2023-November/280966.html


v4:
* functions now return -EINVAL instead of -1.
* enum moved to header file.
* documentation changes for rte_arg_parse_arg_type() function.
* minor changes for issues flagged during review.

v3:
* new 'combined core string parser' and 'heuristic parser'
* changes to eventdev_pipeline and l3fwd-power example applications
* various struct optimisations in arg_parser.c
* fix for windows build relating to RTE_SWAP()
* minor changes for issues flagged during review

v2:
* changes to EAL service core related parsers to call API.
* various optimisations in core_bit related functions in arg_parser.c.
* add lib to list for windows build.
* minor changes for issues flagged during review.

Euan Bourke (8):
  arg_parser: new library for command line parsing
  arg_parser: add new coremask parsing API
  eal: add support for new arg parsing library
  eal: update to service core related parsers
  event/dlb2: add new arg parsing library API support
  arg_parser: added common core string and heuristic parsers
  examples/eventdev_pipeline: update to call arg parser API
  examples/l3fwd-power: update to call arg parser API

 .mailmap                                     |   1 +
 MAINTAINERS                                  |   4 +
 doc/api/doxy-api-index.md                    |   1 +
 doc/api/doxy-api.conf.in                     |   1 +
 drivers/event/dlb2/dlb2_priv.h               |   4 +-
 drivers/event/dlb2/pf/base/dlb2_resource.c   |  51 ++--
 examples/eventdev_pipeline/main.c            |  66 +----
 examples/eventdev_pipeline/pipeline_common.h |   1 +
 examples/l3fwd-power/perf_core.c             |  52 +---
 lib/arg_parser/arg_parser.c                  | 221 ++++++++++++++
 lib/arg_parser/meson.build                   |   7 +
 lib/arg_parser/rte_arg_parser.h              | 164 +++++++++++
 lib/arg_parser/version.map                   |  13 +
 lib/eal/common/eal_common_options.c          | 285 ++++---------------
 lib/eal/meson.build                          |   2 +-
 lib/meson.build                              |   2 +
 16 files changed, 510 insertions(+), 365 deletions(-)
 create mode 100644 lib/arg_parser/arg_parser.c
 create mode 100644 lib/arg_parser/meson.build
 create mode 100644 lib/arg_parser/rte_arg_parser.h
 create mode 100644 lib/arg_parser/version.map

-- 
2.34.1