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vsh: Simplify condition for calling completer callback

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The way we currently call completer callbacks is that if we've
found --option that user wants to complete value for and it has
callback set then the callback is called.

And just before that, if no --option to have the value completed
is found or is found and is of boolean type then a list of
--option is generated (for given command).

But these two conditions can never be true at the same time
because boolean type of --options do not accept values. Therefore
the calling of completer callback can be promoted onto the same
level as the --option list generation.

This means that merging of two lists can be dropped to and
completer callback can store its retval directly into @list (but
as shown earlier one of the string lists to merge is always
empty).

Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Jonathon Jongsma <jjongsma@redhat.com>
This commit is contained in:
Michal Privoznik 2021-02-02 11:52:27 +01:00
parent b1eab47c2d
commit 9b005b1967
1 changed files with 19 additions and 25 deletions
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24
tools/vsh.c
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@ -2750,34 +2750,28 @@ vshReadlineParse(const char *text, int state)
if (!cmd) {
list = vshReadlineCommandGenerator(text);
} else {
if (!opt || opt->type == VSH_OT_BOOL)
} else if (!opt || opt->type == VSH_OT_BOOL) {
list = vshReadlineOptionsGenerator(text, cmd, partial);
if (opt && opt->completer) {
g_auto(GStrv) completer_list = opt->completer(autoCompleteOpaque,
} else if (opt && opt->completer) {
list = opt->completer(autoCompleteOpaque,
partial,
opt->completer_flags);
}
/* Escape completions, if needed (i.e. argument
* we are completing wasn't started with a quote
* character). This also enables filtering done
* below to work properly. */
if (completer_list &&
if (list &&
!rl_completion_quote_character) {
size_t i;
for (i = 0; completer_list[i]; i++) {
for (i = 0; list[i]; i++) {
g_auto(virBuffer) buf = VIR_BUFFER_INITIALIZER;
virBufferEscape(&buf, '\\', " ", "%s", completer_list[i]);
VIR_FREE(completer_list[i]);
completer_list[i] = virBufferContentAndReset(&buf);
}
}
if (virStringListMerge(&list, &completer_list) < 0)
goto cleanup;
virBufferEscape(&buf, '\\', " ", "%s", list[i]);
VIR_FREE(list[i]);
list[i] = virBufferContentAndReset(&buf);
}
}