[RFC v3 00/12] add argparse library

[Chengwen Feng]

Introduce argparse library (which was inspired by the thread [1]),
compared with getopt, it makes it easy to write user-friendly
command-like program.

Note: the [1/6] commit contains usage examples.

[1] https://patchwork.dpdk.org/project/dpdk/patch/20231105054539.22303-2-fengchengwen@huawei.com/

Chengwen Feng (12):
  eal: introduce more macro for bit definition
  argparse: add argparse library
  argparse: support verify argument config
  test/argparse: add verify argument config test
  argparse: support parse parameters
  test/argparse: add parse parameters test
  argparse: provide parsing known type API
  test/argparse: add parse type test
  argparse: support parse unsigned base type
  test/argparse: add parse unsigned base type test
  argparse: pretty help info
  examples/dma: replace getopt with argparse

---
v3: refine the implement, standard new marco for bit definition, add
    reserved field, extend flags to 64bit, support u8/u16/u32/u64, add
    rte_argparse_parse_type() API, pretty help info, fix dmafwd bug,
    also address some of Stephen's comments.
v2: refine the definition, add implement code, add examples which
    address Stephen's comments.

 app/test/meson.build                   |   1 +
 app/test/test_argparse.c               | 835 +++++++++++++++++++++++++
 doc/api/doxy-api-index.md              |   1 +
 doc/api/doxy-api.conf.in               |   1 +
 doc/guides/prog_guide/argparse_lib.rst | 141 +++++
 doc/guides/prog_guide/index.rst        |   1 +
 examples/dma/dmafwd.c                  | 279 ++++-----
 examples/dma/meson.build               |   2 +-
 lib/argparse/meson.build               |   7 +
 lib/argparse/rte_argparse.c            | 782 +++++++++++++++++++++++
 lib/argparse/rte_argparse.h            | 218 +++++++
 lib/argparse/version.map               |   8 +
 lib/eal/include/rte_bitops.h           |  64 ++
 lib/meson.build                        |   1 +
 14 files changed, 2187 insertions(+), 154 deletions(-)
 create mode 100644 app/test/test_argparse.c
 create mode 100644 doc/guides/prog_guide/argparse_lib.rst
 create mode 100644 lib/argparse/meson.build
 create mode 100644 lib/argparse/rte_argparse.c
 create mode 100644 lib/argparse/rte_argparse.h
 create mode 100644 lib/argparse/version.map

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2.17.1