Re: [ALTERNATE PATCH] Add a simple option parser.

On Fri, Oct 05, 2007 at 03:33:44PM +0000, Kristian Høgsberg wrote:

On Fri, 2007-10-05 at 16:25 +0200, Pierre Habouzit wrote:

quoted

The option parser takes argc, argv, an array of struct option
and a usage string.  Each of the struct option elements in the array
describes a valid option, its type and a pointer to the location where the
value is written.  The entry point is parse_options(), which scans through
the given argv, and matches each option there against the list of valid
options.  During the scan, argv is rewritten to only contain the
non-option command line arguments and the number of these is returned.

Aggregation of single switches is allowed:
  -rC0 is the same as -r -C 0 (supposing that -C wants an arg).

Boolean switches automatically support the option with the same name,
prefixed with 'no-' to disable the switch:
  --no-color / --color only need to have an entry for "color".

Long options are supported either with '=' or without:
  --some-option=foo is the same as --some-option foo

That looks great, works for me.  One comment, though: it looks like
you're not sure whether to call these things "options" or "switches".
We should choose one and stick with it.

  I use the word "switch" when it's a short_option, and "option" when
it's a long one. But maybe the distinction doesn't make sense, and it's
a non-native speaker glitch. I don't care that much btw.

quoted

oh and I don't grok what OPTION_LAST is for, so I left it apart, but
it seems unused ?

Oh, kill that.  I used that as the option array terminator before we
switched to ARRAY_SIZE().

  Okay :)


-- 
·O·  Pierre Habouzit
··O                                                madcoder@debian.org
OOO                                                http://www.madism.org