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package UI::Dialog::Backend::Whiptail; ############################################################################### # Copyright (C) 2004-2016 Kevin C. Krinke <kevin@krinke.ca> # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2.1 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library; if not, write to the Free Software # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA ############################################################################### use 5.006; use strict; use warnings; use Carp; use FileHandle; use Time::HiRes qw( sleep ); use UI::Dialog::Backend; BEGIN { use vars qw( $VERSION @ISA ); @ISA = qw( UI::Dialog::Backend ); $VERSION = '1.21'; } #:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::: #: Constructor Method #: sub new { my $proto = shift(); my $class = ref($proto) || $proto; my $cfg = ((ref($_[0]) eq "HASH") ? $_[0] : (@_) ? { @_ } : {}); my $self = {}; bless($self, $class); $self->{'_state'} = {}; $self->{'_opts'} = {}; #: Dynamic path discovery... my $CFG_PATH = $cfg->{'PATH'}; if ($CFG_PATH) { if (ref($CFG_PATH) eq "ARRAY") { $self->{'PATHS'} = $CFG_PATH; } elsif ($CFG_PATH =~ m!:!) { $self->{'PATHS'} = [ split(/:/,$CFG_PATH) ]; } elsif (-d $CFG_PATH) { $self->{'PATHS'} = [ $CFG_PATH ]; } } elsif ($ENV{'PATH'}) { $self->{'PATHS'} = [ split(/:/,$ENV{'PATH'}) ]; } else { $self->{'PATHS'} = ''; } $self->{'_opts'}->{'literal'} = $cfg->{'literal'} || 0; $self->{'_opts'}->{'callbacks'} = $cfg->{'callbacks'} || undef(); $self->{'_opts'}->{'debug'} = $cfg->{'debug'} || undef(); $self->{'_opts'}->{'title'} = $cfg->{'title'} || undef(); $self->{'_opts'}->{'backtitle'} = $cfg->{'backtitle'} || undef(); $self->{'_opts'}->{'width'} = $cfg->{'width'} || 65; $self->{'_opts'}->{'height'} = $cfg->{'height'} || 10; $self->{'_opts'}->{'listheight'} = $cfg->{'listheight'} || $cfg->{'menuheight'} || 10; $self->{'_opts'}->{'percentage'} = $cfg->{'percentage'} || 1; $self->{'_opts'}->{'bin'} ||= $self->_find_bin('whiptail'); $self->{'_opts'}->{'autoclear'} = $cfg->{'autoclear'} || 0; $self->{'_opts'}->{'clearbefore'} = $cfg->{'clearbefore'} || 0; $self->{'_opts'}->{'clearafter'} = $cfg->{'clearafter'} || 0; $self->{'_opts'}->{'beepbin'} = $cfg->{'beepbin'} || $self->_find_bin('beep') || '/usr/bin/beep'; $self->{'_opts'}->{'beepbefore'} = $cfg->{'beepbefore'} || 0; $self->{'_opts'}->{'beepafter'} = $cfg->{'beepafter'} || 0; $self->{'_opts'}->{'timeout'} = $cfg->{'timeout'} || 0; $self->{'_opts'}->{'wait'} = $cfg->{'wait'} || 0; unless (-x $self->{'_opts'}->{'bin'}) { croak("the whiptail binary could not be found at: ".$self->{'_opts'}->{'bin'}); } $self->{'_opts'}->{'trust-input'} = $cfg->{'trust-input'} || 0; $self->{'test_mode'} = $cfg->{'test_mode'} if exists $cfg->{'test_mode'}; $self->{'test_mode_result'} = ''; return($self); } #:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::: #: Private Methods #: my $SIG_CODE = {}; sub _del_gauge { my $CODE = $SIG_CODE->{$$}; unless (not ref($CODE)) { delete($CODE->{'_GAUGE'}); $CODE->rv('1'); $CODE->rs('null'); $CODE->ra('null'); $SIG_CODE->{$$} = ""; } } sub append_format_base { my ($self,$args,$fmt) = @_; $fmt = $self->append_format_check($args,$fmt,'backtitle','--backtitle {{backtitle}}'); $fmt = $self->append_format_check($args,$fmt,"defaultno","--defaultno"); $fmt = $self->append_format_check($args,$fmt,"default-item","--default-item {{default-item}}"); $fmt = $self->append_format_check($args,$fmt,"fullbuttons","--fullbuttons"); $fmt = $self->append_format_check($args,$fmt,"nocancel","--nocancel"); $fmt = $self->append_format_check($args,$fmt,"yes-button","--yes-button {{yes-button}}"); $fmt = $self->append_format_check($args,$fmt,"no-button","--no-button {{no-button}}"); $fmt = $self->append_format_check($args,$fmt,"ok-button","--ok-button {{ok-button}}"); $fmt = $self->append_format_check($args,$fmt,"cancel-button","--cancel-button {{cancel-button}}"); $fmt = $self->append_format_check($args,$fmt,"notags","--notags"); $fmt = $self->append_format_check($args,$fmt,"scrolltext","--scrolltext"); $fmt = $self->append_format_check($args,$fmt,"top-left","--top-left"); if ($self->{'_opts'}->{'force-no-separate-output'}) { delete $args->{'separate-output'}; } else { $fmt = $self->append_format_check($args,$fmt,"separate-output","--separate-output"); } return $fmt; } #:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::: #: Public Methods #: #:+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ #: Ask a binary question (Yes/No) sub yesno { my $self = shift(); my $caller = (caller(1))[3] || 'main'; $caller = ($caller =~ /^UI\:\:Dialog\:\:Backend\:\:/) ? ((caller(2))[3]||'main') : $caller; if ($_[0] && $_[0] eq 'caller') { shift(); $caller = shift(); } my $args = $self->_pre($caller,@_); my $fmt = $self->prepare_format($args); $fmt = $self->append_format_base($args,$fmt); $fmt = $self->append_format($fmt,'--yesno {{text}} {{height}} {{width}}'); my $command = $self->prepare_command ( $args, $fmt, text => $self->make_kvt($args,$args->{'text'}), ); my $rv = $self->command_state($command); if ($rv && $rv >= 1) { $self->ra("NO"); $self->rs("NO"); $self->rv($rv); } else { $self->ra("YES"); $self->rs("YES"); $self->rv('null'); } $self->_post($args); return($rv == 0 ? 1 : 0); } #:+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ #: Text entry sub inputbox { my $self = shift(); my $caller = (caller(1))[3] || 'main'; $caller = ($caller =~ /^UI\:\:Dialog\:\:Backend\:\:/) ? ((caller(2))[3]||'main') : $caller; if ($_[0] && $_[0] eq 'caller') { shift(); $caller = shift(); } my $args = $self->_pre($caller,@_); my $fmt = $self->prepare_format($args); $fmt = $self->append_format_base($args,$fmt); if ($args->{'password'}) { $fmt = $self->append_format($fmt,'--passwordbox'); } else { $fmt = $self->append_format($fmt,'--inputbox'); } $fmt = $self->append_format($fmt,'{{text}} {{height}} {{width}} {{entry}}'); my $command = $self->prepare_command ( $args, $fmt, text => $self->make_kvt($args,$args->{'text'}), entry => $self->make_kvl($args,($args->{'init'}||$args->{'entry'})), ); my ($rv,$text) = $self->command_string($command); $self->_post($args); return($rv == 0 ? $text : 0); } #: password boxes aren't supported by gdialog sub password { my $self = shift(); return($self->inputbox('caller',((caller(1))[3]||'main'),@_,'password',1)); } #:+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ #: Text box sub msgbox { my $self = shift(); my $caller = (caller(1))[3] || 'main'; $caller = ($caller =~ /^UI\:\:Dialog\:\:Backend\:\:/) ? ((caller(2))[3]||'main') : $caller; if ($_[0] && $_[0] eq 'caller') { shift(); $caller = shift(); } my $args = $self->_pre($caller,@_); $args->{'msgbox'} ||= 'msgbox'; my $fmt = $self->prepare_format($args); $fmt = $self->append_format_base($args,$fmt); if ($args->{'infobox'}) { $fmt = $self->append_format($fmt,'--infobox'); } else { $fmt = $self->append_format($fmt,'--msgbox'); } $fmt = $self->append_format($fmt,'{{text}} {{height}} {{width}}'); my $command = $self->prepare_command ( $args, $fmt, text => $self->make_kvt($args,$args->{'text'}), ); $args->{'timeout'} ||= $args->{'wait'} if exists $args->{'wait'} and $args->{'wait'}; my $tmp_term = $ENV{TERM}; $ENV{TERM} = 'vt220' # wow, really folks? if ($args->{'infobox'}); my $rv = $self->command_state($command); if ($args->{'infobox'}) { $ENV{TERM} = $tmp_term; # yep, really. my $sec = 0; if ($args->{'timeout'}) { $sec = int($args->{'timeout'} ? ($args->{'timeout'} / 1000.0) : 1.0); $self->_debug("Will sleep for timeout=".$sec); } elsif ($args->{'wait'}) { $sec = int($args->{'wait'} ? $args->{'wait'} : 1); $self->_debug("Will sleep for wait=".$sec); } sleep($sec) if $sec; } $self->_post($args); return($rv == 0 ? 1 : 0); } sub infobox { my $self = shift(); return($self->msgbox('caller',((caller(1))[3]||'main'),@_,'infobox',1)); } #:+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ #: File box sub textbox { my $self = shift(); my $caller = (caller(1))[3] || 'main'; $caller = ($caller =~ /^UI\:\:Dialog\:\:Backend\:\:/) ? ((caller(2))[3]||'main') : $caller; if ($_[0] && $_[0] eq 'caller') { shift(); $caller = shift(); } my $args = $self->_pre($caller,@_); my $fmt = $self->prepare_format($args); $fmt = $self->append_format_base($args,$fmt); $fmt = $self->append_format($fmt,'--textbox'); $fmt = $self->append_format($fmt,'{{path}} {{height}} {{width}}'); my $command = $self->prepare_command ( $args, $fmt, path => $self->make_kvl($args,($args->{'path'}||'.')), ); my ($rv,$text) = $self->command_string($command); $self->_post($args); return($rv == 0 ? 1 : 0); } #:+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ #: Lists sub menu { my $self = shift(); my $caller = (caller(1))[3] || 'main'; $caller = ($caller =~ /^UI\:\:Dialog\:\:Backend\:\:/) ? ((caller(2))[3]||'main') : $caller; if ($_[0] && $_[0] eq 'caller') { shift(); $caller = shift(); } my $args = $self->_pre($caller,@_); $args->{'listheight'} = $args->{'menuheight'} if exists $args->{'menuheight'}; my $fmt = $self->prepare_format($args); $fmt = $self->append_format_base($args,$fmt); $fmt = $self->append_format($fmt,'--separate-output'); $fmt = $self->append_format($fmt,'--menu'); $fmt = $self->append_format($fmt,'{{text}} {{height}} {{width}} {{listheight}} {{list}}'); my $command = $self->prepare_command ( $args, $fmt, text => $self->make_kvt($args,$args->{'text'}), ); my ($rv,$selected) = $self->command_string($command); $self->_post($args); return($rv == 0 ? $selected : 0); } sub checklist { my $self = shift(); my $caller = (caller(1))[3] || 'main'; $caller = ($caller =~ /^UI\:\:Dialog\:\:Backend\:\:/) ? ((caller(2))[3]||'main') : $caller; if ($_[0] && $_[0] eq 'caller') { shift(); $caller = shift(); } my $args = $self->_pre($caller,@_); $args->{'listheight'} = $args->{'menuheight'} if exists $args->{'menuheight'}; my $fmt = $self->prepare_format($args); $fmt = $self->append_format_base($args,$fmt); $fmt = $self->append_format($fmt,'--separate-output'); $args->{radiolist} ||= 0; if ($args->{radiolist}) { $fmt = $self->append_format($fmt,'--radiolist'); } else { $fmt = $self->append_format($fmt,'--checklist'); } $fmt = $self->append_format($fmt,'{{text}} {{height}} {{width}} {{listheight}} {{list}}'); my $command = $self->prepare_command ( $args, $fmt, text => $self->make_kvt($args,$args->{'text'}), ); if ($args->{radiolist}) { my ($rv,$selected) = $self->command_string($command); return($rv == 0 ? $selected : 0); } my ($rv,$selected) = $self->command_array($command); return($rv == 0 ? @{$selected} : 0); } sub radiolist { my $self = shift(); return($self->checklist('caller',((caller(1))[3]||'main'),@_,'radiolist',1)); } #:+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ #: progress meter sub gauge_start { my $self = shift(); my $caller = (caller(1))[3] || 'main'; $caller = ($caller =~ /^UI\:\:Dialog\:\:Backend\:\:/) ? ((caller(2))[3]||'main') : $caller; if ($_[0] && $_[0] eq 'caller') { shift(); $caller = shift(); } my $args = $self->_pre($caller,@_); $self->{'_GAUGE'} ||= {}; $self->{'_GAUGE'}->{'ARGS'} = $args; if (defined $self->{'_GAUGE'}->{'FH'}) { $self->rv(129); $self->_post($args); return(0); } my $fmt = $self->prepare_format($args); $fmt = $self->append_format($fmt,'--gauge'); $fmt = $self->append_format($fmt,'{{text}} {{height}} {{width}} {{percentage}}'); my $command = $self->prepare_command ( $args, $fmt, text => $self->make_kvt($args,$args->{'text'}), percentage => $self->make_kvl($args,$args->{'percentage'}||'0'), ); $self->{'_GAUGE'}->{'PERCENT'} = ($args->{'percentage'} || '0'); $self->{'_GAUGE'}->{'FH'} = new FileHandle; $self->{'_GAUGE'}->{'FH'}->open("| $command"); my $rv = $? >> 8; $self->{'_GAUGE'}->{'FH'}->autoflush(1); $self->rv($rv||'null'); $self->ra('null'); $self->rs('null'); my $this_rv; if ($rv && $rv >= 1) { $this_rv = 0; } else { $this_rv = 1; } return($this_rv); } sub gauge_inc { my $self = $_[0]; my $incr = $_[1] || 1; return(0) unless defined $self->{'_GAUGE'}->{'FH'}; my $fh = $self->{'_GAUGE'}->{'FH'}; $self->{'_GAUGE'}->{'PERCENT'} += $incr; $SIG_CODE->{$$} = $self; local $SIG{'PIPE'} = \&_del_gauge; print $fh $self->{'_GAUGE'}->{'PERCENT'}."\n"; return(((defined $self->{'_GAUGE'}->{'FH'}) ? 1 : 0)); } sub gauge_dec { my $self = $_[0]; my $decr = $_[1] || 1; return(0) unless defined $self->{'_GAUGE'}->{'FH'}; my $fh = $self->{'_GAUGE'}->{'FH'}; $self->{'_GAUGE'}->{'PERCENT'} -= $decr; $SIG_CODE->{$$} = $self; local $SIG{'PIPE'} = \&_del_gauge; print $fh $self->{'_GAUGE'}->{'PERCENT'}."\n"; return(((defined $self->{'_GAUGE'}->{'FH'}) ? 1 : 0)); } sub gauge_set { my $self = $_[0]; my $perc = $_[1] || $self->{'_GAUGE'}->{'PERCENT'} || 1; my $fh = $self->{'_GAUGE'}->{'FH'}; return(0) unless $self->{'_GAUGE'}->{'FH'}; $self->{'_GAUGE'}->{'PERCENT'} = $perc; $SIG_CODE->{$$} = $self; local $SIG{'PIPE'} = \&_del_gauge; print $fh $self->{'_GAUGE'}->{'PERCENT'}."\n"; return(((defined $self->{'_GAUGE'}->{'FH'}) ? 1 : 0)); } sub gauge_text { my $self = $_[0]; my $mesg = $_[1] || return(0); my $fh = $self->{'_GAUGE'}->{'FH'}; return(0) unless $self->{'_GAUGE'}->{'FH'}; $SIG_CODE->{$$} = $self; local $SIG{'PIPE'} = \&_del_gauge; print $fh "\nXXX\n\n".$mesg."\n\nXXX\n\n".$self->{'_GAUGE'}->{'PERCENT'}."\n"; return(((defined $self->{'_GAUGE'}->{'FH'}) ? 1 : 0)); } sub gauge_stop { my $self = $_[0]; return(0) unless $self->{'_GAUGE'}->{'FH'}; my $args = $self->{'_GAUGE'}->{'ARGS'}; my $fh = $self->{'_GAUGE'}->{'FH'}; $SIG_CODE->{$$} = $self; local $SIG{'PIPE'} = \&_del_gauge; $self->{'_GAUGE'}->{'FH'}->close(); delete($self->{'_GAUGE'}->{'FH'}); delete($self->{'_GAUGE'}->{'ARGS'}); delete($self->{'_GAUGE'}->{'PERCENT'}); delete($self->{'_GAUGE'}); $self->rv('null'); $self->rs('null'); $self->ra('null'); $self->_post($args); return(1); } 1;
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