/usr/share/tcltk/tcllib1.16/term/ipager.tcl is in tcllib 1.16-dfsg-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 | # -*- tcl -*-
# ### ### ### ######### ######### #########
## Terminal packages - string -> action mappings
## (pager objects). For use with 'receive listen'.
## In essence a DFA with tree structure.
# ### ### ### ######### ######### #########
## Requirements
package require snit
package require textutil::repeat
package require textutil::tabify
package require term::ansi::send
package require term::receive::bind
package require term::ansi::code::ctrl
namespace eval ::term::receive::pager {}
# ### ### ### ######### ######### #########
snit::type ::term::interact::pager {
option -in -default stdin
option -out -default stdout
option -column -default 0
option -line -default 0
option -height -default 25
option -actions -default {}
# ### ### ### ######### ######### #########
##
constructor {str args} {
$self configurelist $args
Save $str
install bind using ::term::receive::bind \
${selfns}::bind $options(-actions)
$bind map [cd::cu] [mymethod Up]
$bind map [cd::cd] [mymethod Down]
$bind map \033\[5~ [mymethod PageUp]
$bind map \033\[6~ [mymethod PageDown]
$bind map \n [mymethod Done]
#$bind default [mymethod DEF]
return
}
# ### ### ### ######### ######### #########
##
method interact {} {
Show
$bind listen $options(-in)
set interacting 1
vwait [myvar done]
set interacting 0
$bind unlisten $options(-in)
return
}
method done {} {set done . ; return}
method clear {} {Clear ; return}
method text {str} {
if {$interacting} {Clear}
Save $str
if {$interacting} {Show}
return
}
# ### ### ### ######### ######### #########
##
component bind
# ### ### ### ######### ######### #########
##
variable header
variable text
variable footer
variable empty
proc Save {str} {
upvar 1 header header text text footer footer maxline maxline
upvar 1 options(-height) height empty empty at at
set lines [split [textutil::tabify::untabify2 $str] \n]
set max 0
foreach l $lines {
if {[set len [string length $l]] > $max} {set max $len}
}
set header [cd::groptim [cd::tlc][textutil::repeat::strRepeat [cd::hl] $max][cd::trc]]
set footer [cd::groptim [cd::blc][textutil::repeat::strRepeat [cd::hl] $max][cd::brc]]
set text {}
foreach l $lines {
lappend text [cd::vl]${l}[textutil::repeat::strRepeat " " [expr {$max-[string length $l]}]][cd::vl]
}
set h $height
if {$h > [llength $text]} {set h [llength $text]}
set eline " [textutil::repeat::strRepeat { } $max]"
set empty $eline
for {set i 0} {$i <= $h} {incr i} {
append empty \n$eline
}
set maxline [expr {[llength $text] - $height}]
if {$maxline < 0} {set maxline 0}
set at 0
return
}
variable interacting 0
variable at 0
variable maxline -1
variable done .
proc Show {} {
upvar 1 header header text text footer footer at at
upvar 1 options(-in) in options(-column) col
upvar 1 options(-out) out options(-line) row
upvar 1 options(-height) height
set to [expr {$at + $height -1}]
vt::wrch $out [cd::showat $row $col \
$header\n[join [lrange $text $at $to] \n]\n$footer]
return
}
proc Clear {} {
upvar 1 empty empty options(-column) col
upvar 1 options(-out) out options(-line) row
vt::wrch $out [cd::showat $row $col $empty]
return
}
# ### ### ### ######### ######### #########
##
method Up {str} {
if {$at == 0} return
incr at -1
Show
return
}
method Down {str} {
if {$at >= $maxline} return
incr at
Show
return
}
method PageUp {str} {
set newat [expr {$at - $options(-height) + 1}]
if {$newat < 0} {set newat 0}
if {$newat == $at} return
set at $newat
Show
return
}
method PageDown {str} {
set newat [expr {$at + $options(-height) - 1}]
if {$newat >= $maxline} {set newat $maxline}
if {$newat == $at} return
set at $newat
Show
return
}
method Done {str} {
$self done
return
}
method DEF {str} {
puts stderr "($str)"
exit
}
##
# ### ### ### ######### ######### #########
}
# ### ### ### ######### ######### #########
## Ready
namespace eval ::term::interact::pager {
term::ansi::code::ctrl::import cd
term::ansi::send::import vt
}
package provide term::interact::pager 0.1
##
# ### ### ### ######### ######### #########
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