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Option parsing in gdb python
- From: Robert Lupton the Good <rhl at astro dot princeton dot edu>
- To: gdb at sourceware dot org
- Date: Fri, 21 Oct 2011 21:18:30 -0400
- Subject: Option parsing in gdb python
I just spent a few minutes fiddling with optparse (deprecated in python 2.7, but I don't think I care) to make it usable from gdb python (the problem is that by default it uses sys.argv[0] for help messages, and exits on error). With my subclass you can say e.g.
parser = GdbOptionParser("show image [opts] [nx [ny]]")
parser.add_option("-a", "--all", action="store_true", help="Display the whole image/mask")
parser.add_option("-w", "--width", type="int", default=8, help="Field width for pixels")
(opts, args) = parser.parse_args(args)
and things "just work". I'd be happy to donate the code to fsf/gdb
R
import gdb
import optparse
class GdbOptionParser(optparse.OptionParser):
def __init__(self, usage, *args, **kwargs):
optparse.OptionParser.__init__(self, *args, **kwargs) # OptionParser is an old-style class
self.set_usage(usage)
def parse_args(self, args, values=None):
"""Call optparse.OptionParser.parse_args after running gdb.string_to_argv on args"""
return optparse.OptionParser.parse_args(self, gdb.string_to_argv(args), values)
def exit(self, status=0, msg=None):
raise gdb.GdbError(msg)