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cli: Improve comments for _VirtCLIArgument

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This commit is contained in:
Cole Robinson 2016-06-13 19:35:21 -04:00
parent 3ce5af712b
commit 8a0fd7927f
1 changed files with 17 additions and 7 deletions
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24
virtinst/cli.py
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@ -822,7 +822,11 @@ class _VirtCLIArgument(object):
self.lookup_cb = lookup_cb
self.is_novalue = is_novalue
def _parse_common(self, opts, inst, support_cb, is_lookup):
def _lookup_val(self, opts, inst, support_cb, is_lookup):
"""
Find the value in 'opts' thats associated with this Argument,
and perform some other misc checking
"""
val = None
for cliname in self.aliases + [self.cliname]:
# We iterate over all values unconditionally, so they are
@ -845,11 +849,13 @@ class _VirtCLIArgument(object):
def parse_param(self, opts, inst, support_cb):
"""
Process the cli param. So if we are VirtCLIArgument for
the --disk device, calling this function actually handles
the device value processing.
Process the cli param against the pass inst.
So if we are VirtCLIArgument for --disk device=, and the user
specified --disk device=foo, we grab 'device=foo' from the
parsed 'opts', and set inst.device = foo
"""
val = self._parse_common(opts, inst, support_cb, False)
val = self._lookup_val(opts, inst, support_cb, False)
if val is 0:
return
@ -869,9 +875,13 @@ class _VirtCLIArgument(object):
def lookup_param(self, opts, inst):
"""
Lookup device, like via virt-xml --edit X matching
See if the passed value matches our Argument, like via virt-xml
So if this Argument is for --disk device=, and the user
specified virt-xml --edit device=floppy --disk ..., we grab
device=floppy from 'opts', then return 'inst.device == floppy'
"""
val = self._parse_common(opts, inst, None, True)
val = self._lookup_val(opts, inst, None, True)
if val is 0:
return