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|
#!/usr/bin/perl
#
# Genrate bash_completion_dog
#
use strict;
my ($program) = @ARGV;
print "#!bash\n";
print "\n";
open IN, "$program -h |" or die "cannot find $program\n";
my @help = <IN>;
close IN;
# Hash of sub command arrays.
# E.g. $subcmds{'node'} = [kill, list, info, recovery, md]
my %subcmds;
# Hash of sub sub command arrays.
# E.g. $subsubcmds{'trace graph'} = [cat, stat]
my %subsubcmds;
# Hash of option arrays.
# E.g. $opts{'node list'} = [-a, --address, -p, --port, -r, --raw, -h, --help]
my %opts;
foreach (@help) {
if (/^ (\S+) (\S+)/) {
my ($cmd, $subcmd) = ($1, $2);
$subcmds{$cmd} = [] if (!defined($subcmds{$cmd}));
push @{$subcmds{$cmd}}, $subcmd;
$opts{"$cmd $subcmd"} = [];
$subsubcmds{"$cmd $subcmd"} = [];
# run sub command to get more detailed usage
open IN, "$program $cmd $subcmd -h |";
while (<IN>) {
if (/^ (-.), (--\S+)/) {
# get options
push @{$opts{"$cmd $subcmd"}}, $1;
push @{$opts{"$cmd $subcmd"}}, $2;
} elsif (/^ ([a-z]+)/) {
# get available subcommands
push @{$subsubcmds{"$cmd $subcmd"}}, $1;
}
}
close IN;
}
}
foreach my $cmd (keys %subcmds) {
my @subcmds = @{$subcmds{$cmd}};
print command($cmd, @subcmds);
foreach my $subcmd (@subcmds) {
print subcommand($cmd, $subcmd);
}
}
print <<__EOB__;
_dog()
{
local opts cur cmd subcmd
opts="@{[keys %subcmds]}"
cur="\${COMP_WORDS[COMP_CWORD]}"
if [ \$COMP_CWORD -gt 1 ]; then
cmd=\${COMP_WORDS[1]}
fi
if [ \$COMP_CWORD -gt 2 ]; then
subcmd=\${COMP_WORDS[2]}
fi
case "\${cmd}" in
__EOB__
foreach my $cmd (keys %subcmds) {
print <<__EOB__;
$cmd)
_dog_$cmd \${subcmd}
;;
__EOB__
}
print <<__EOB__;
"")
COMPREPLY=(\$( compgen -W "\${opts}" -- \${cur} ))
;;
*)
COMPREPLY=()
;;
esac
}
complete -F _dog dog
__EOB__
exit 0;
# get a completion function for dog command (e.g. _dog_vdi())
sub command {
my ($cmd, @subcmds) = @_;
my $output;
$output = <<__EOB__;
_dog_${cmd}()
{
local opts
opts="@subcmds"
case "\$1" in
__EOB__
foreach my $subcmd (@subcmds) {
$output .= <<__EOB__;
$subcmd)
_dog_${cmd}_${subcmd}
;;
__EOB__
}
$output .= <<__EOB__;
"")
COMPREPLY=(\$( compgen \\
-W "\${opts}" \\
-- "\${COMP_WORDS[COMP_CWORD]}" ))
;;
*)
COMPREPLY=()
;;
esac
}
__EOB__
$output =~ s/\t/ /g;
$output =~ s/^ //gm;
return $output;
}
# get a completion function for dog subcommands (e.g. _dog_vdi_create())
sub subcommand {
my ($cmd, $subcmd) = @_;
my $output;
my @opts = @{$opts{"$cmd $subcmd"}};
my @subsubcmds = @{$subsubcmds{"$cmd $subcmd"}};
$output = <<__EOB__;
_dog_${cmd}_${subcmd}()
{
local cur
cur="\${COMP_WORDS[COMP_CWORD]}"
case "\$cur" in
-*)
COMPREPLY=(\${COMPREPLY[@]} \\
\$( compgen \\
-W "@opts" \\
__EOB__
$output .= <<__EOB__;
-- \${cur} ))
;;
__EOB__
if ($cmd eq 'vdi' && $subcmd ne 'create') {
$output .= <<__EOB__;
*)
local dog="\${COMP_WORDS[0]}"
local vdilist="\$(\${dog} vdi list -r 2>/dev/null | awk '{print \$2}')"
COMPREPLY=(\$( compgen -W "@subsubcmds \${vdilist}" -- \${cur} ))
;;
__EOB__
} else {
$output .= <<__EOB__;
*)
COMPREPLY=(\$( compgen -W "@subsubcmds" -- \${cur} ))
;;
__EOB__
}
$output .= <<__EOB__;
esac
}
__EOB__
$output =~ s/\t/ /g;
$output =~ s/^ //gm;
return $output;
}
|
