[Pdbg] [PATCH 0/8] Rework option parsing

[Alistair Popple]

Option parsing is currently done in a very adhoc manner with each
individual command/action doing it's own parsing of arguments. This has
resulted in significant code duplication and several copy & paste errors
along with a lot of boilerplate code.

Some of this could be refactored to reduce duplication, however it would
still require tedious boilerplate functions to parse and pass arguments
through to the actual function calls. This can make it annoying to call a
series of pdbg commands/actions from within pdbg itself. It also makes
testing of command parsing logic hard as it becomes embedded in each
command.

Instead this series defines some individual argument parsers which can be
tested independently along with a general method of defining commands and
some tests.

Unfortunately this does rely on some macro magic. It is not strictly
neccessary but it does allow for type safety between command definitions
and function calls.

This series is functional but there are still a couple of items left TODO
depending on feedback from this series:

 - HTM (will look at once all the fixes/refactoring has been completed)

 - Help text generation. We could embed this in the general library?

 - Short flag parsing

 - Top-level/global/targetting flag parsing still uses the existing adhoc
   methods. Should be relatively straight forward to fix when the above is
   done.

Alistair Popple (8):
  ccan: Add cppmagic
  ccan/cppmagic: Fix NONEMPTY macro
  ccan/cppmagic: Add CPPMAGIC_INC(x) macro
  ccan/cppmaigc: Add CPPMAGIC_MAP_CNT(...) macro
  pdbg: Add command/flag parsing definitions
  pdbg: Define common command/flag argument parsers
  optcmd: Add tests
  pdbg: Use new command parsing

 Makefile.am              |  19 +++-
 ccan/cppmagic/LICENSE    |   1 +
 ccan/cppmagic/_info      |  30 ++++++
 ccan/cppmagic/cppmagic.h | 257 +++++++++++++++++++++++++++++++++++++++++++++++
 ccan/cppmagic/test/run.c |  92 +++++++++++++++++
 src/cfam.c               |  55 +++-------
 src/cfam.h               |  18 ----
 src/main.c               | 125 ++++++++++++++---------
 src/mem.c                | 124 ++++-------------------
 src/mem.h                |  20 ----
 src/optcmd.c             | 110 ++++++++++++++++++++
 src/optcmd.h             | 185 ++++++++++++++++++++++++++++++++++
 src/parsers.c            |  85 ++++++++++++++++
 src/parsers.h            |  21 ++++
 src/reg.c                | 164 ++++++++----------------------
 src/reg.h                |  20 ----
 src/ring.c               |  32 +-----
 src/ring.h               |  17 ----
 src/scom.c               |  54 +++-------
 src/scom.h               |  18 ----
 src/tests/optcmd_test.c  | 161 +++++++++++++++++++++++++++++
 src/thread.c             |  87 +++++++++++-----
 src/thread.h             |  23 -----
 23 files changed, 1194 insertions(+), 524 deletions(-)
 create mode 120000 ccan/cppmagic/LICENSE
 create mode 100644 ccan/cppmagic/_info
 create mode 100644 ccan/cppmagic/cppmagic.h
 create mode 100644 ccan/cppmagic/test/run.c
 delete mode 100644 src/cfam.h
 delete mode 100644 src/mem.h
 create mode 100644 src/optcmd.c
 create mode 100644 src/optcmd.h
 create mode 100644 src/parsers.c
 create mode 100644 src/parsers.h
 delete mode 100644 src/reg.h
 delete mode 100644 src/ring.h
 delete mode 100644 src/scom.h
 create mode 100644 src/tests/optcmd_test.c
 delete mode 100644 src/thread.h

-- 
2.11.0