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# -*- coding: utf-8 -*- |
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# Copyright (C) 2011-2015 Rocky Bernstein <rocky@cpan.org> |
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# A base class for debugger subcommands. |
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# |
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25655
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use Exporter; |
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use warnings; |
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no warnings 'redefine'; |
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use rlib '../../../../..'; |
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use Devel::Trepan::CmdProcessor::Command; |
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package Devel::Trepan::CmdProcessor::Command::Subcmd; |
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use Devel::Trepan::CmdProcessor::Validate; |
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BEGIN { |
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@SUBCMD_VARS = qw($HELP $IN_LIST $RUN_CMD $MIN_ABBREV |
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$MIN_ARGS $MAX_ARGS |
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$NAME $SHORT_HELP @SUBCMD_VARS @SUBCMD_ISA); |
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} |
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use strict; |
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my $NotImplementedMessage = |
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"This method must be overridden in a subclass"; |
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use vars qw(@SUBCMD_VARS @EXPORT @ISA @SUBCMD_ISA); |
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use vars @SUBCMD_VARS; |
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1409
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@ISA = qw(Exporter); |
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@SUBCMD_ISA = qw(Devel::Trepan::CmdProcessor::Command::Subcmd); |
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@EXPORT = @SUBCMD_VARS; |
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$IN_LIST = 1; # Show item in help list of commands |
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$RUN_CMD = 1; # Run subcommand for those subcommands like "show" |
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# which append current settings to list output. |
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use constant MIN_ARGS => 0; |
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use constant MAX_ARGS => 0; |
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use constant NEED_STACK => 0; |
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13254
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$MIN_ABBREV = 1; |
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$NAME = 'your_command_name'; |
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# $cmd contains the command object that this |
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# command is invoked through. A debugger field gives access to |
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# the stack frame and I/O. |
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sub new($$$) |
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{ |
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my ($class, $cmd, $name) = @_; |
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my $self = {cmd => $cmd}; |
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# Convenience class access. We don't expect that any of these |
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# will change over the course of the program execution like |
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# errmsg(), msg(), and msg_nocr() might. (See the note below |
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# on these latter 3 methods.) |
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# |
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464
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1529
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$self->{dbgr} = $cmd->{dbgr}; |
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1291
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$self->{proc} = $cmd->{proc}; |
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59
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# FIXME: Inheritence of vars is not working the way I had hoped. |
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# So this is a workaround. |
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1062
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my $base_prefix="Devel::Trepan::CmdProcessor::Command::Subcmd::"; |
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1436
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for my $field (@SUBCMD_VARS) { |
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12884
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my $sigil = substr($field, 0, 1); |
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14497
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my $new_field = index('$@', $sigil) >= 0 ? substr($field, 1) : $field; |
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100
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12384
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if ($sigil eq '$') { |
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3712
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192127
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$self->{lc $new_field} = |
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eval "\$${class}::${new_field} || \$${base_prefix}${new_field}"; |
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} elsif ($sigil eq '@') { |
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$self->{lc $new_field} = eval "[\@${class}::${new_field}]"; |
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} else { |
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0
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die "Woah - bad sigil: $sigil"; |
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} |
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} |
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# Done after above since $NAME is in @SUBCMD_VARS; |
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$self->{name} = $name; |
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$self->{short_help} ||= $self->{help}; |
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1449
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bless $self, $class; |
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3680
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$self->set_name_prefix($class); |
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11325
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$self; |
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} |
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# Convenience short-hand for $proc->confirm |
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sub confirm($$;$) { |
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my ($self, $msg, $default) = @_; |
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return($self->{proc}->confirm($msg, $default)); |
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} |
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# Set a Boolean-valued debugger setting. |
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sub run_set_bool($$;$) |
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{ |
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my ($self, $args, $default) = @_; |
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$default = 1 if scalar @_ < 3; |
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my $onoff_arg = @$args < 3 ? 'on' : $args->[2]; |
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my $key = $self->subcmd_setting_key(); |
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$self->{proc}{settings}{$key} = $self->{proc}->get_onoff($onoff_arg); |
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$self->run_show_bool(); |
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} |
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99
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# set an Integer-valued debugger setting. |
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sub run_set_int($$$;$$) |
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{ |
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0
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my ($self, $arg, $msg_on_error, $min_value, $max_value) = @_; |
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0
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if ($arg =~/^\s*$/) { |
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$self->{proc}->errmsg('You need to supply a number.'); |
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return undef; |
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} |
107
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0
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0
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my $val = $self->{proc}->get_an_int($arg, |
108
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{max_value => $max_value, |
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min_value => $min_value, |
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msg_on_error => $msg_on_error |
111
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}); |
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if (defined ($val)) { |
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$self->{settings}{subcmd_setting_key} = $val; |
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0
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$self->run_show_int(); |
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} |
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} |
117
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118
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# Generic subcommand showing a boolean-valued debugger setting. |
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sub run_show_bool($;$) |
120
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{ |
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0
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my ($self, $what) = @_; |
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my $key = $self->subcmd_setting_key(); |
123
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0
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my $val = $self->show_onoff($self->{proc}{settings}{$key}); |
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$what = $self->{name} unless $what; |
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$self->{proc}->msg(sprintf "%s is %s.", $what, $val); |
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} |
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128
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# Generic subcommand integer value display |
129
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sub run_show_int($;$) |
130
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{ |
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0
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my ($self, $what) = @_; |
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my $val = $self->{settings}{$self->subcmd_setting_key()}; |
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unless ($what) { |
134
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my @what = @$self->{prefix}; |
135
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0
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0
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pop @what; |
136
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$what = join(' ', @what); |
137
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} |
138
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0
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0
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$self->msg(sprintf "%s is %d.", $what, $val); |
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} |
140
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141
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# Generic subcommand value display. Pass in a hash which may |
142
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# which optionally contain: |
143
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# |
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# :name - the String name of key in settings to use. If :value |
145
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# (described below) is set, then setting :name does |
146
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# nothing. |
147
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# |
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# :what - the String name of what we are showing. If none is |
149
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# given, then we use the part of the SHORT_HELP string. |
150
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# |
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# :value - a String value associated with "what" above. If none |
152
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# is given, then we pick up the value from settings. |
153
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# |
154
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sub run_show_val($;$) |
155
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{ |
156
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my ($self, $opts) = @_; |
157
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0
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$opts ||= {}; |
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my $what = exists $opts->{what} ? $opts->{what} : $self->{string_in_show}; |
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my $name = exists $opts->{name} ? $opts->{name} : $self->{name}; |
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my $val = exists $opts->{value} ? $opts->{value} : $self->{settings}{$name}; |
161
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0
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0
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my $msg = sprintf("%s is %s.", $what, $val); |
162
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0
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$self->msg($msg); |
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} |
164
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165
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# sub save_command_from_settings |
166
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# ["${subcmd_prefix_string} ${settings[subcmd_setting_key]}"] |
167
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# } |
168
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169
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sub subcmd_prefix_string($) |
170
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{ |
171
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0
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0
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my $self = shift; |
172
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0
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0
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join(' ', $self->{prefix}); |
173
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} |
174
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175
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sub subcmd_setting_key($) |
176
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{ |
177
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0
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0
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0
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my $self = shift; |
178
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0
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0
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return $self->{subcmd_setting_key} if $self->{subcmd_setting_key}; |
179
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0
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0
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my @prefix = @{$self->{prefix}}; shift @prefix; |
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0
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0
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0
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180
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0
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$self->{subcmd_setting_key} = join('', @prefix); |
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} |
182
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183
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# Return 'on' for true and 'off' for false, and ?? for anything else. |
184
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sub show_onoff($$) |
185
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{ |
186
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0
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0
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0
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my ($self, $bool) = @_; |
187
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0
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0
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if (!defined($bool)) { |
|
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0
|
|
|
|
|
|
188
|
0
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|
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|
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0
|
return 'unset'; |
189
|
|
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|
|
|
|
} elsif ($bool) { |
190
|
0
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|
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0
|
return 'on'; |
191
|
|
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|
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|
|
} else { |
192
|
0
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|
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0
|
return 'off' |
193
|
|
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} |
194
|
|
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} |
195
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196
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sub set_name_prefix($$) |
197
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|
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{ |
198
|
464
|
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464
|
|
1531
|
my ($self, $class) = @_; |
199
|
464
|
|
|
|
|
3372
|
my @prefix = split(/::/, $class); |
200
|
464
|
|
|
|
|
1567
|
splice(@prefix, 0, 4); # Remove Devel::Trepan::CmdProcessor::Command |
201
|
464
|
|
|
|
|
1411
|
@prefix = map {lc $_} @prefix; |
|
928
|
|
|
|
|
3349
|
|
202
|
464
|
|
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|
|
3307
|
$self->{prefix} = \@prefix; |
203
|
464
|
|
|
|
|
2266
|
$self->{cmd_str} = join(' ', @prefix); |
204
|
|
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|
} |
205
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|
206
|
|
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|
|
sub string_in_show($) |
207
|
|
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|
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|
|
{ |
208
|
0
|
|
|
0
|
|
0
|
my ($self, $bool) = @_; |
209
|
0
|
|
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|
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0
|
my $skip_len = length('Show '); |
210
|
0
|
|
|
|
|
0
|
ucfirst substr($self->{short_help}, $skip_len); |
211
|
|
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|
|
|
} |
212
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|
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213
|
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|
|
|
sub summary_help($$) |
214
|
|
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|
|
|
|
{ |
215
|
0
|
|
|
0
|
|
0
|
my ($self, $subcmd_name) = @_; |
216
|
0
|
|
|
|
|
0
|
my $msg = sprintf("%-12s: %s", $subcmd_name, $self->{short_help}); |
217
|
0
|
|
|
|
|
0
|
$self->msg_nocr($msg); |
218
|
|
|
|
|
|
|
} |
219
|
|
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|
|
|
|
|
220
|
|
|
|
|
|
|
|
221
|
|
|
|
|
|
|
package Devel::Trepan::CmdProcessor::Command::SetBoolSubcmd; |
222
|
12
|
|
|
12
|
|
98
|
use vars qw(@ISA); |
|
12
|
|
|
|
|
30
|
|
|
12
|
|
|
|
|
2931
|
|
223
|
|
|
|
|
|
|
@ISA = qw(Exporter Devel::Trepan::CmdProcessor::Command::Subcmd); |
224
|
|
|
|
|
|
|
|
225
|
|
|
|
|
|
|
sub complete($$) |
226
|
|
|
|
|
|
|
{ |
227
|
4
|
|
|
4
|
|
10
|
my ($self, $prefix) = @_; |
228
|
4
|
|
|
|
|
14
|
return Devel::Trepan::Complete::complete_token(['on', 'off'], $prefix); |
229
|
|
|
|
|
|
|
} |
230
|
|
|
|
|
|
|
|
231
|
|
|
|
|
|
|
|
232
|
|
|
|
|
|
|
sub new($$$) { |
233
|
70
|
|
|
70
|
|
285
|
my ($class, $cmd, $name) = @_; |
234
|
70
|
|
|
|
|
312
|
my $self = Devel::Trepan::CmdProcessor::Command::Subcmd::new($class, $cmd, $name); |
235
|
70
|
|
|
|
|
217
|
$self->{max_args} = 1; |
236
|
70
|
|
|
|
|
217
|
bless $self, $class; |
237
|
70
|
|
|
|
|
2015
|
$self; |
238
|
|
|
|
|
|
|
} |
239
|
|
|
|
|
|
|
|
240
|
|
|
|
|
|
|
sub run($$) { |
241
|
0
|
|
|
0
|
|
|
my ($self, $args) = @_; |
242
|
0
|
|
|
|
|
|
$self->run_set_bool($args); |
243
|
|
|
|
|
|
|
} |
244
|
|
|
|
|
|
|
|
245
|
|
|
|
|
|
|
sub save_command($) { |
246
|
0
|
|
|
0
|
|
|
my ($self) = @_; |
247
|
0
|
|
|
|
|
|
my %settings = $self->{settings}; |
248
|
0
|
0
|
|
|
|
|
my $val = $settings{$self->subcmd_setting_key()} ? 'on' : 'off'; |
249
|
0
|
|
|
|
|
|
[$self->subcmd_prefix_string . " ${val}"]; |
250
|
|
|
|
|
|
|
} |
251
|
|
|
|
|
|
|
|
252
|
|
|
|
|
|
|
package Devel::Trepan::CmdProcessor::Command::ShowBoolSubcmd; |
253
|
12
|
|
|
12
|
|
92
|
use vars qw(@ISA); |
|
12
|
|
|
|
|
41
|
|
|
12
|
|
|
|
|
1067
|
|
254
|
|
|
|
|
|
|
@ISA = qw(Exporter Devel::Trepan::CmdProcessor::Command::Subcmd); |
255
|
|
|
|
|
|
|
sub run($) |
256
|
|
|
|
|
|
|
{ |
257
|
0
|
|
|
0
|
|
|
my ($self, $args) = @_; |
258
|
0
|
|
|
|
|
|
$self->run_show_bool($self->string_in_show()); |
259
|
|
|
|
|
|
|
} |
260
|
|
|
|
|
|
|
|
261
|
|
|
|
|
|
|
package Devel::Trepan::CmdProcessor::Command::ShowIntSubcmd; |
262
|
12
|
|
|
12
|
|
72
|
use vars qw(@ISA); |
|
12
|
|
|
|
|
71
|
|
|
12
|
|
|
|
|
2834
|
|
263
|
|
|
|
|
|
|
@ISA = qw(Exporter Devel::Trepan::CmdProcessor::Command::Subcmd); |
264
|
|
|
|
|
|
|
|
265
|
|
|
|
|
|
|
sub run($) { |
266
|
0
|
|
|
0
|
|
|
my ($self, $args) = @_; |
267
|
0
|
|
|
|
|
|
my $doc; |
268
|
0
|
0
|
|
|
|
|
if ($self->{short_help}) { |
269
|
0
|
|
|
|
|
|
$doc = $self->{short_help}; |
270
|
|
|
|
|
|
|
} else { |
271
|
0
|
|
|
|
|
|
my $len = length($self->{help}) - 6; |
272
|
0
|
|
|
|
|
|
$doc = ucfirst substr($self->{help}, 5, $len); |
273
|
|
|
|
|
|
|
} |
274
|
0
|
|
|
|
|
|
$self->run_show_int($doc); |
275
|
|
|
|
|
|
|
} |
276
|
|
|
|
|
|
|
|
277
|
|
|
|
|
|
|
unless (caller) { |
278
|
|
|
|
|
|
|
# Demo it. |
279
|
|
|
|
|
|
|
require Devel::Trepan::CmdProcessor::Mock; |
280
|
|
|
|
|
|
|
my $proc = Devel::Trepan::CmdProcessor::Mock::setup(); |
281
|
|
|
|
|
|
|
my %cmds = %{$proc->{commands}}; |
282
|
|
|
|
|
|
|
print join(', ', keys %cmds), "\n"; |
283
|
|
|
|
|
|
|
my $subcmd = |
284
|
|
|
|
|
|
|
Devel::Trepan::CmdProcessor::Command::Subcmd->new($cmds{'quit'}); |
285
|
|
|
|
|
|
|
print join(', ', keys %{$subcmd->{settings}}), "\n"; |
286
|
|
|
|
|
|
|
print $subcmd->show_onoff($subcmd->{settings}{autoeval}), "\n"; |
287
|
|
|
|
|
|
|
$subcmd->run_set_int($proc, 'Just a test'); |
288
|
|
|
|
|
|
|
} |
289
|
|
|
|
|
|
|
|
290
|
|
|
|
|
|
|
1; |