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vt100.tcl
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#
# VT100 server
#
listen [registry get bbs.vt100.port] script listen:vt100
proc listen:vt100 {newidx} {
putcmdlog "Serving vt100 for idx $newidx."
listen:vt100:welcome $newidx
control $newidx control:vt100
}
proc listen:vt100:welcome {idx} {
#Menu files in 3 cols
set txtroot [registry get bbs.vt100.txtroot]
set files [split [glob $txtroot/*.vt]]
set pos [strlen $txtroot]
set cols 3
set rows [expr [llength $files].0 / $cols]
set rowsc [expr ceil($rows)]
set rows [expr floor($rows)]
for {set i 0} {$i < $rowsc} {incr i} {
set line ""
for {set j 0} {$j < $cols} {incr j} {
set item [string range [lindex $files [expr int ($i + $j * $rows)]] $pos+1 end-3]
append line [completestring $item 24]
}
putdcc $idx $line
}
putdcc $idx [string repeat _ 72]
putdcc $idx "Text to read: "
return 1
}
#Plays the relevant file to $idx, cleans and exit
proc vt100:play {idx} {
putcmdlog "(vt100) Playing file for idx $idx"
global vt100
set txtroot [registry get bbs.vt100.txtroot]
set fd [open $txtroot/[dict get $vt100($idx) file].vt r]
set i 0
while {![eof $fd] && $i < 1000} {
#Wait time: 0.0005s
putdcc $idx [gets $fd]
after 3
incr i
}
if {$i == 5000} {
putdcc $idx "Stop at 5000th line."
putcmdlog "(vt100) Stopping at 5000th line for idx $idx"
}
close $fd
putcmdlog "(vt100) End play file for idx $idx"
#Cleans and exit
unset vt100($idx)
killdcc $idx
}
#Controls the telnet connection
proc control:vt100 {idx text} {
global vt100
set txtroot [registry get bbs.vt100.txtroot]
if ![info exists vt100($idx)] {
if [file exists $txtroot/$text.vt] {
#Reads file
set vt100($idx) [dict create file $text]
#Prints file
vt100:play $idx
} {
putdcc $idx "Not a valid file"
}
} {
switch $text {
exit {
putdcc $idx "Ja mata!"
#Cleans and exit
unset vt100($idx)
return 1
}
default {
putdcc $idx "Unknown command: $text"
}
}
}
return 0
}

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