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HardenedBSD/contrib/dialog/dialog.pl
Baptiste Daroussin f4f33ea0c7 Update libdialog to 1.3-20180621
2018-10-20 20:49:46 +00:00

601 lines
15 KiB
Perl
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# Functions that handle calling dialog(1) -*-perl-*-
# $Id: dialog.pl,v 1.18 2018/06/12 21:01:58 tom Exp $
################################################################################
# Copyright 2018 Thomas E. Dickey
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU Lesser General Public License, version 2.1
# as published by the Free Software Foundation.
#
# This program 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 program; if not, write to
# Free Software Foundation, Inc.
# 51 Franklin St., Fifth Floor
# Boston, MA 02110, USA.
################################################################################
# The "rhs_" functions, as well as return_output originally came from Redhat
# 4.0, e.g.,
# http://www.ibiblio.org/pub/historic-linux/distributions/redhat-4.0/i386/live/usr/bin/Xconfigurator.pl
# The other functions were added to make this more useful for demonstrations.
# These comments are from the original file:
#------------------------------------------------------------------------------
# Return values are 1 for success and 0 for failure (or cancel)
# Resultant text (if any) is in dialog_result
# Unfortunately, the gauge requires use of /bin/sh to get going.
# I didn't bother to make the others shell-free, although it
# would be simple to do.
# Note that dialog generally returns 0 for success, so I invert the
# sense of the return code for more readable boolean expressions.
#------------------------------------------------------------------------------
use warnings;
use strict;
use diagnostics;
our $DIALOG = "dialog";
our $GAUGE;
our $gauge_width;
our $scr_lines = 24;
our $scr_cols = 80;
our @dialog_result;
our $trace = 0;
require "flush.pl";
sub trace {
if ($trace) {
if ( open TRACE, ">>dialog.log" ) {
printf TRACE $_[0], @_[ 1 .. $#_ ];
close TRACE;
}
}
}
sub quoted($) {
my $text = shift;
$text =~ s/[\r\n]+/\n/g;
$text =~ s/[^\n\t -~]/?/g;
$text =~ s/([\\"])/\\$1/g;
return sprintf "\"%s\"", $text;
}
sub screensize() {
my $params = `$DIALOG --stdout --print-maxsize`;
$params =~ s/\s+$//;
$params =~ s/^[^:]*:\s+//;
my @params = split /,\s+/, $params;
if ( $#params == 1 ) {
$scr_lines = $params[0];
$scr_cols = $params[1];
}
else {
$scr_lines = 24;
$scr_cols = 80;
}
}
sub height_of($$) {
my $width = shift;
my $message = shift;
my $command =
"$DIALOG --stdout --print-text-size "
. &quoted($message)
. " $scr_lines $width 2>&1";
my $params = `$command`;
my @params = split( /\s/, $params );
return $params[0];
}
sub rhs_clear {
return system("$DIALOG --clear");
}
sub rhs_textbox {
my ( $title, $file, $width, $height ) = @_;
$width = int($width);
$height = int($height);
system( "$DIALOG --title "
. &quoted($title)
. " --textbox $file $height $width" );
return 1;
}
sub rhs_msgbox {
my ( $title, $message, $width ) = @_;
my ( $tmp, $height );
$width = int($width);
$message = &rhs_wordwrap( $message, $width );
$height = 5 + &height_of( $width, $message );
$tmp =
system( "$DIALOG --title "
. &quoted($title)
. " --msgbox "
. &quoted($message)
. " $height $width" );
if ($tmp) {
return 0;
}
else {
return 1;
}
}
sub rhs_infobox {
my ( $title, $message, $width ) = @_;
my ( $tmp, $height );
$width = int($width);
$message = &rhs_wordwrap( $message, $width );
$height = 2 + &height_of( $width, $message );
return
system( "$DIALOG --title "
. &quoted($title)
. " --infobox "
. &quoted($message)
. " $height $width" );
}
sub rhs_yesno {
my ( $title, $message, $width ) = @_;
my ( $tmp, $height );
$width = int($width);
$message = &rhs_wordwrap( $message, $width );
$height = 4 + &height_of( $width, $message );
$tmp =
system( "$DIALOG --title "
. &quoted($title)
. " --yesno "
. &quoted($message)
. " $height $width" );
# Dumb: dialog returns 0 for "yes" and 1 for "no"
if ( !$tmp ) {
return 1;
}
else {
return 0;
}
}
sub rhs_gauge {
my ( $title, $message, $width, $percent ) = @_;
my ( $tmp, $height );
$width = int($width);
$gauge_width = $width;
$message = &rhs_wordwrap( $message, $width );
$height = 5 + &height_of( $width, $message );
open( $GAUGE,
"|$DIALOG --title "
. &quoted($title)
. " --gauge "
. &quoted($message)
. " $height $width $percent" );
}
sub rhs_update_gauge {
my ($percent) = @_;
&printflush( $GAUGE, "$percent\n" );
}
sub rhs_update_gauge_and_message {
my ( $message, $percent ) = @_;
$message = &rhs_wordwrap( $message, $gauge_width );
$message =~ s/\n/\\n/g;
&printflush( $GAUGE, "XXX\n$percent\n$message\nXXX\n" );
}
sub rhs_stop_gauge {
close $GAUGE;
}
sub rhs_inputbox {
my ( $title, $message, $width, $instr ) = @_;
my ( $tmp, $height );
$width = int($width);
$message = &rhs_wordwrap( $message, $width );
$height = 7 + &height_of( $width, $message );
return &return_output( 0,
"$DIALOG --title "
. &quoted($title)
. " --inputbox "
. &quoted($message)
. " $height $width "
. &quoted($instr) );
}
sub rhs_menu {
my ( $title, $message, $width, $numitems ) = @_;
my ( $i, $tmp, $ent, $height, $listheight, $menuheight, @list );
$width = int($width);
$numitems = int($numitems);
shift;
shift;
shift;
shift;
@list = ();
for ( $i = 0 ; $i < $numitems ; $i++ ) {
$ent = shift;
$list[@list] = &quoted($ent);
$ent = shift;
$list[@list] = &quoted($ent);
}
$message = &rhs_wordwrap( $message, $width );
$listheight = &height_of( $width, $message );
$height = 6 + $listheight + $numitems;
if ( $height <= $scr_lines ) {
$menuheight = $numitems;
}
else {
$height = $scr_lines;
$menuheight = $scr_lines - $listheight - 6;
}
return &return_output( 0,
"$DIALOG --title "
. &quoted($title)
. " --menu "
. &quoted($message)
. " $height $width $menuheight @list" );
}
sub rhs_menul {
my ( $title, $message, $width, $numitems ) = @_;
my ( $i, $tmp, $ent, $height, $listheight, $menuheight, @list );
$width = int($width);
$numitems = int($numitems);
shift;
shift;
shift;
shift;
@list = ();
for ( $i = 0 ; $i < $numitems ; $i++ ) {
$ent = shift;
$list[@list] = &quoted($ent);
$list[@list] = &quoted("");
}
$message = &rhs_wordwrap( $message, $width );
$listheight = &height_of( $width, $message );
$height = 6 + $listheight + $numitems;
if ( $height <= $scr_lines ) {
$menuheight = $numitems;
}
else {
$height = $scr_lines;
$menuheight = $scr_lines - $listheight - 6;
}
return &return_output( 0,
"$DIALOG --title "
. &quoted($title)
. " --menu "
. &quoted($message)
. " $height $width $menuheight @list" );
}
sub rhs_menua {
my ( $title, $message, $width, %items ) = @_;
my ( $tmp, $ent, $height, $listheight, $menuheight, @list );
$width = int($width);
@list = ();
foreach $ent ( sort keys(%items) ) {
$list[@list] = &quoted($ent);
$list[@list] = &quoted( $items{$ent} );
}
my $numitems = keys(%items);
$message = &rhs_wordwrap( $message, $width );
$listheight = &height_of( $width, $message );
$height = 6 + $listheight + $numitems;
if ( $height <= $scr_lines ) {
$menuheight = $numitems;
}
else {
$height = $scr_lines;
$menuheight = $scr_lines - $listheight - 6;
}
return &return_output( 0,
"$DIALOG --title "
. &quoted($title)
. " --menu "
. &quoted($message)
. " $height $width $menuheight @list" );
}
sub rhs_checklist {
my ( $title, $message, $width, $numitems ) = @_;
my ( $i, $tmp, $ent, $height, $listheight, $menuheight, @list );
$width = int($width);
$numitems = int($numitems);
shift;
shift;
shift;
shift;
@list = ();
for ( $i = 0 ; $i < $numitems ; $i++ ) {
$ent = shift;
$list[@list] = &quoted($ent);
$ent = shift;
$list[@list] = &quoted($ent);
$ent = shift;
if ($ent) {
$list[@list] = "ON";
}
else {
$list[@list] = "OFF";
}
}
$message = &rhs_wordwrap( $message, $width );
$listheight = &height_of( $width, $message );
$height = 6 + $listheight + $numitems;
if ( $height <= $scr_lines ) {
$menuheight = $numitems;
}
else {
$height = $scr_lines;
$menuheight = $scr_lines - $listheight - 6;
}
return &return_output( "list",
"$DIALOG --title "
. &quoted($title)
. " --separate-output --checklist "
. &quoted($message)
. " $height $width $menuheight @list" );
}
sub rhs_checklistl {
my ( $title, $message, $width, $numitems ) = @_;
my ( $i, $tmp, $ent, $height, $listheight, $menuheight, @list );
$width = int($width);
$numitems = int($numitems);
shift;
shift;
shift;
shift;
@list = ();
for ( $i = 0 ; $i < $numitems ; $i++ ) {
$ent = shift;
$list[@list] = &quoted($ent);
$list[@list] = &quoted("");
$list[@list] = "OFF";
}
$message = &rhs_wordwrap( $message, $width );
$listheight = &height_of( $width, $message );
$height = 6 + $listheight + $numitems;
if ( $height <= $scr_lines ) {
$menuheight = $numitems;
}
else {
$height = $scr_lines;
$menuheight = $scr_lines - $listheight - 6;
}
return &return_output( "list",
"$DIALOG --title "
. &quoted($title)
. " --separate-output --checklist "
. &quoted($message)
. " $height $width $menuheight @list" );
}
sub rhs_checklista {
my ( $title, $message, $width, %items ) = @_;
my ( $tmp, $ent, $height, $listheight, $menuheight, @list );
shift;
shift;
shift;
shift;
@list = ();
foreach $ent ( sort keys(%items) ) {
$list[@list] = &quoted($ent);
$list[@list] = &quoted( $items{$ent} );
$list[@list] = "OFF";
}
my $numitems = keys(%items);
$message = &rhs_wordwrap( $message, $width );
$listheight = &height_of( $width, $message );
$height = 6 + $listheight + $numitems;
if ( $height <= $scr_lines ) {
$menuheight = $numitems;
}
else {
$height = $scr_lines;
$menuheight = $scr_lines - $listheight - 6;
}
return &return_output( "list",
"$DIALOG --title "
. &quoted($title)
. " --separate-output --checklist "
. &quoted($message)
. " $height $width $menuheight @list" );
}
sub rhs_radiolist {
my ( $title, $message, $width, $numitems ) = @_;
my ( $i, $tmp, $ent, $height, $listheight, $menuheight, @list );
$width = int($width);
$numitems = int($numitems);
shift;
shift;
shift;
shift;
@list = ();
for ( $i = 0 ; $i < $numitems ; $i++ ) {
$ent = shift;
$list[@list] = &quoted($ent);
$ent = shift;
$list[@list] = &quoted($ent);
$ent = shift;
if ($ent) {
$list[@list] = "ON";
}
else {
$list[@list] = "OFF";
}
}
$message = &rhs_wordwrap( $message, $width );
$listheight = &height_of( $width, $message );
$height = 6 + $listheight + $numitems;
if ( $height <= $scr_lines ) {
$menuheight = $numitems;
}
else {
$height = $scr_lines;
$menuheight = $scr_lines - $listheight - 6;
}
return &return_output( 0,
"$DIALOG --title "
. &quoted($title)
. " --radiolist "
. &quoted($message)
. " $height $width $menuheight @list" );
}
sub return_output {
my ( $listp, $command ) = @_;
my ($res) = 1;
pipe( PARENT_READER, CHILD_WRITER );
# We have to fork (as opposed to using "system") so that the parent
# process can read from the pipe to avoid deadlock.
my ($pid) = fork;
if ( $pid == 0 ) { # child
close(PARENT_READER);
open( STDERR, ">&CHILD_WRITER" );
exec($command);
die("no exec");
}
if ( $pid > 0 ) { # parent
close(CHILD_WRITER);
if ($listp) {
@dialog_result = ();
while (<PARENT_READER>) {
chop;
$dialog_result[@dialog_result] = $_;
}
}
else {
@dialog_result = <PARENT_READER>;
}
close(PARENT_READER);
waitpid( $pid, 0 );
$res = $?;
}
# Again, dialog returns results backwards
if ( !$res ) {
return 1;
}
else {
return 0;
}
}
sub rhs_wordwrap {
my ( $intext, $width ) = @_;
my ( $outtext, $i, $j, @lines, $wrap, @words, $pos, $pad );
&trace( "rhs_wordwrap\n\tintext:%s\n\twidth:%d\n", $intext, $width );
&screensize;
$width = int($width);
$outtext = "";
$pad = 3; # leave 3 spaces around each line
$pos = $pad; # current insert position
$wrap = 0; # 1 if we have been auto wrapping
my $insert_nl = 0; # 1 if we just did an absolute
# and we should preface any new text
# with a new line
@lines = split( /\n/, $intext );
for ( $i = 0 ; $i <= $#lines ; $i++ ) {
if ( $lines[$i] =~ /^>/ ) {
$outtext .= "\n" if ($insert_nl);
$outtext .= "\n" if ($wrap);
$lines[$i] =~ /^>(.*)$/;
$outtext .= $1;
$insert_nl = 1;
$wrap = 0;
$pos = $pad;
}
else {
$wrap = 1;
@words = split( /\s+/, $lines[$i] );
for ( $j = 0 ; $j <= $#words ; $j++ ) {
if ($insert_nl) {
$outtext .= "\n";
$insert_nl = 0;
}
if ( ( length( $words[$j] ) + $pos ) > $width - $pad ) {
$outtext .= "\n";
$pos = $pad;
}
$outtext .= $words[$j] . " ";
$pos += length( $words[$j] ) + 1;
}
}
}
&trace( "\touttext:%s\n", $outtext );
return $outtext;
}
############
1;
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