| 1 |
#!/usr/bin/perl |
| 2 |
## |
| 3 |
## POE::Component::Terminal -- Terminal Component |
| 4 |
## |
| 5 |
## $Id: Terminal.pm,v 1.2 2002/06/15 03:45:21 cvsjoko Exp $ |
| 6 |
## |
| 7 |
## $Log: Terminal.pm,v $ |
| 8 |
## Revision 1.2 2002/06/15 03:45:21 cvsjoko |
| 9 |
## + cvs id & log |
| 10 |
## + clearing inputbuffer just after getting the "enter"-key |
| 11 |
## |
| 12 |
## |
| 13 |
package POE::Component::Terminal; |
| 14 |
|
| 15 |
use strict; |
| 16 |
#use strict qw ( vars refs ); |
| 17 |
use warnings; |
| 18 |
|
| 19 |
|
| 20 |
use Carp qw( croak carp ); |
| 21 |
|
| 22 |
use POE; |
| 23 |
|
| 24 |
use Term::ReadKey; |
| 25 |
use Data::Dumper; |
| 26 |
|
| 27 |
$POE::Component::Terminal::VERSION = 0.01; |
| 28 |
|
| 29 |
my @args_needed = qw ( |
| 30 |
Alias |
| 31 |
Caption |
| 32 |
PromptPrefix |
| 33 |
PromptPostfix |
| 34 |
RequestSession |
| 35 |
RequestState |
| 36 |
ResponseSession |
| 37 |
ResponseState |
| 38 |
PromptChangeState |
| 39 |
); |
| 40 |
|
| 41 |
my $states = { |
| 42 |
_start => 'start', |
| 43 |
_stop => 'stop', |
| 44 |
_signal => 'signal', |
| 45 |
_default => 'default', |
| 46 |
pollForKey => 'pollForKey', |
| 47 |
recievePrompt => 'recievePrompt', |
| 48 |
recieveResponse => 'recieveResponse', |
| 49 |
}; |
| 50 |
|
| 51 |
sub RUNNING_IN_HELL () { $^O eq 'MSWin32' } |
| 52 |
|
| 53 |
sub new { |
| 54 |
my $class = shift; |
| 55 |
$class = ref( $class ) || $class; |
| 56 |
#my( %args ) = ( %default_args, @_ ); |
| 57 |
my $args = shift; |
| 58 |
|
| 59 |
# bless class into object ($self) |
| 60 |
my $self = bless {}, $class; |
| 61 |
|
| 62 |
## Check args |
| 63 |
foreach my $arg_needed (@args_needed) { |
| 64 |
croak "Need $arg_needed argument." |
| 65 |
unless exists $args->{ $arg_needed }; |
| 66 |
} |
| 67 |
|
| 68 |
# store entries from args to object ($self) |
| 69 |
map { $self->{$_} = $args->{$_}; } keys %{$args}; |
| 70 |
|
| 71 |
if ( RUNNING_IN_HELL () ) { |
| 72 |
$self->{conf}{EnterKey} = "\r"; |
| 73 |
} else { |
| 74 |
$self->{conf}{EnterKey} = "\n"; |
| 75 |
} |
| 76 |
|
| 77 |
## Make our session. See $states defined up above . . . |
| 78 |
POE::Session->create( object_states => [ $self => $states, ], ); |
| 79 |
|
| 80 |
return $self; |
| 81 |
} |
| 82 |
|
| 83 |
## |
| 84 |
## start -- Startup state |
| 85 |
## |
| 86 |
sub start { |
| 87 |
my( $self, $kernel, $heap, $session, $sender ) = |
| 88 |
@_[ OBJECT, KERNEL, HEAP, SESSION, SENDER ]; |
| 89 |
|
| 90 |
## Pipe up if we're debugging |
| 91 |
print STDERR "## ", __PACKAGE__, "::start\r\n" if $self->{Debug}; |
| 92 |
|
| 93 |
## Set the alias requested so we can be post'd to |
| 94 |
$kernel->alias_set( $self->{Alias} ); |
| 95 |
|
| 96 |
## Remember session that created us for posting DispatchEvent |
| 97 |
$self->{ _target } = $sender; |
| 98 |
|
| 99 |
$heap->{state}{InputBuffer} = ''; |
| 100 |
$heap->{state}{Startup} = 1; |
| 101 |
$heap->{state}{Caption} = $self->{Caption}; |
| 102 |
|
| 103 |
# initially call worker-state |
| 104 |
$kernel->post($session, "pollForKey"); |
| 105 |
|
| 106 |
return; |
| 107 |
} |
| 108 |
|
| 109 |
## |
| 110 |
## stop -- Shutdown state |
| 111 |
## |
| 112 |
sub stop { |
| 113 |
my( $self, $kernel, $heap ) = @_[ OBJECT, KERNEL, HEAP ]; |
| 114 |
|
| 115 |
## Just pipe up if we're debugging |
| 116 |
print STDERR "## ", __PACKAGE__, "::stop\r\n" if $self->{_debug}; |
| 117 |
|
| 118 |
return |
| 119 |
} |
| 120 |
|
| 121 |
## |
| 122 |
## signal -- Handle any signals received |
| 123 |
## |
| 124 |
sub signal { |
| 125 |
my( $self, $heap, $signal ) = @_[ OBJECT, HEAP, ARG0 ]; |
| 126 |
|
| 127 |
## Just pipe up if we're debugging |
| 128 |
print STDERR "## ", __PACKAGE__, "::signal $signal\n" if $self->{_debug}; |
| 129 |
|
| 130 |
## shut things down on TERM, QUIT, or INT |
| 131 |
if( $signal =~ /^TERM|QUIT|INT/ ) { |
| 132 |
delete $heap->{wheel}; # toss our listening wheel reference |
| 133 |
|
| 134 |
## Check for child wheels |
| 135 |
my $live_wheels = scalar keys %{$heap->{wheels}}; |
| 136 |
if( $live_wheels ) { |
| 137 |
print STDERR "Exiting with $live_wheels clients still active\n" |
| 138 |
if $self->{_debug}; |
| 139 |
delete $heap->{wheels}; |
| 140 |
} |
| 141 |
} |
| 142 |
|
| 143 |
return |
| 144 |
} |
| 145 |
|
| 146 |
## |
| 147 |
## default -- Catch any unhandled events for debugging |
| 148 |
## |
| 149 |
sub default { |
| 150 |
my( $self, $heap, $event ) = @_[ OBJECT, HEAP, ARG0 ]; |
| 151 |
|
| 152 |
## Just pipe up if we're debugging |
| 153 |
print STDERR "## ", __PACKAGE__, "::default got $event\n" |
| 154 |
if $self->{_debug}; |
| 155 |
|
| 156 |
return |
| 157 |
} |
| 158 |
|
| 159 |
|
| 160 |
|
| 161 |
|
| 162 |
|
| 163 |
|
| 164 |
|
| 165 |
# ================ POE stuff |
| 166 |
|
| 167 |
sub pollForKey { |
| 168 |
|
| 169 |
my ($self, $kernel, $heap, $session) = @_[OBJECT, KERNEL, HEAP, SESSION ]; |
| 170 |
|
| 171 |
my $prompt_inlay = $heap->{state}{PromptInlay}; |
| 172 |
if ($prompt_inlay) { $prompt_inlay .= ' '; } else { $prompt_inlay = ''; } |
| 173 |
|
| 174 |
my $prompt = "#> "; |
| 175 |
$prompt = $self->{PromptPrefix} . ' ' . $prompt_inlay . $self->{PromptPostfix}; |
| 176 |
|
| 177 |
if ( ($heap->{state}{KeyPressed} && !$heap->{state}{RequestPending}) || ($heap->{state}{Startup}) ) { |
| 178 |
$heap->{state}{Startup} = 0; |
| 179 |
$heap->{state}{KeyPressed} = 0; |
| 180 |
#ReadMode 4; # Turn off controls keys |
| 181 |
#ReadMode 1; |
| 182 |
#print $prompt; |
| 183 |
my $outputline = $prompt . $heap->{state}{InputBuffer}; |
| 184 |
my $s = ' ' x (length($outputline) + 1); |
| 185 |
print "\r", $s; |
| 186 |
print "\r", $outputline; |
| 187 |
} |
| 188 |
|
| 189 |
my $key = ReadKey(-1); |
| 190 |
if ($key) { |
| 191 |
|
| 192 |
# normal key? |
| 193 |
if ($key =~ m/[a-zA-Z? ]/) { |
| 194 |
$heap->{state}{InputBuffer} .= $key; |
| 195 |
#print $key; |
| 196 |
} |
| 197 |
|
| 198 |
# enter pressed? |
| 199 |
if ($key eq $self->{conf}{EnterKey}) { |
| 200 |
# send command |
| 201 |
my $buf = $heap->{state}{InputBuffer}; |
| 202 |
if ($buf) { |
| 203 |
$heap->{state}{InputBuffer} = ''; |
| 204 |
$heap->{state}{RequestPending} = 1; |
| 205 |
#print "ord: ", ord($buf), "\n"; |
| 206 |
my $response_target = { |
| 207 |
ResponseSession => $self->{ResponseSession}, |
| 208 |
ResponseState => $self->{ResponseState}, |
| 209 |
}; |
| 210 |
$kernel->post( $self->{RequestSession} => $self->{RequestState} => $buf, $response_target); |
| 211 |
} |
| 212 |
|
| 213 |
# prepare new loop for fresh prompt |
| 214 |
print "\n"; |
| 215 |
} |
| 216 |
|
| 217 |
# backspace pressed? |
| 218 |
if (ord($key) == 8) { |
| 219 |
$heap->{state}{InputBuffer} = substr($heap->{state}{InputBuffer}, 0, -1); |
| 220 |
} |
| 221 |
|
| 222 |
# mark "KeyPressed" for next poll |
| 223 |
$heap->{state}{KeyPressed} = 1; |
| 224 |
|
| 225 |
} |
| 226 |
|
| 227 |
#$kernel->post($session, "pollForKey"); |
| 228 |
#$kernel->delay("pollForKey", 0.1); |
| 229 |
$kernel->delay("pollForKey", 0.01); |
| 230 |
|
| 231 |
} |
| 232 |
|
| 233 |
|
| 234 |
|
| 235 |
|
| 236 |
sub recieveResponse { |
| 237 |
my ($kernel, $heap, $session, $response) = @_[KERNEL, HEAP, SESSION, ARG0]; |
| 238 |
if ($response) { print $response, "\n"; } |
| 239 |
$heap->{state}{RequestPending} = 0; |
| 240 |
} |
| 241 |
sub recievePrompt { |
| 242 |
my ($kernel, $heap, $session, $prompt_inlay) = @_[KERNEL, HEAP, SESSION, ARG0]; |
| 243 |
$heap->{state}{PromptInlay} = $prompt_inlay; |
| 244 |
} |
| 245 |
|
| 246 |
|
| 247 |
1; |
Parent Directory
| 
Revision Log
