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fix line wrapping on the console
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1 #!/usr/bin/perl -w
2 #
3 # this is the operators console.
4 #
5 # Calling syntax is:-
6 #
7 # console.pl [callsign] 
8 #
9 # if the callsign isn't given then the sysop callsign in DXVars.pm is assumed
10 #
11 # Copyright (c) 1999 Dirk Koopman G1TLH
12 #
13 # $Id$
14
15
16 require 5.004;
17
18 # search local then perl directories
19 BEGIN {
20         # root of directory tree for this system
21         $root = "/spider"; 
22         $root = $ENV{'DXSPIDER_ROOT'} if $ENV{'DXSPIDER_ROOT'};
23         
24         unshift @INC, "$root/perl";     # this IS the right way round!
25         unshift @INC, "$root/local";
26 }
27
28 use Msg;
29 use DXVars;
30 use DXDebug;
31 use IO::File;
32 use Curses;
33
34 use Carp qw{cluck};
35
36 use Console;
37
38 #
39 # initialisation
40 #
41
42 $call = "";                     # the callsign being used
43 $conn = 0;                      # the connection object for the cluster
44 $lasttime = time;               # lasttime something happened on the interface
45
46 $connsort = "local";
47 @khistory = ();
48 @shistory = ();
49 $khistpos = 0;
50 $spos = $pos = $lth = 0;
51 $inbuf = "";
52
53 # do the screen initialisation
54 sub do_initscr
55 {
56         $scr = new Curses;
57         raw();
58         noecho();
59         $has_colors = has_colors();
60         
61         if ($has_colors) {
62                 start_color();
63                 init_pair(0, $foreground, $background);
64                 init_pair(1, COLOR_RED, $background);
65                 init_pair(2, COLOR_YELLOW, $background);
66                 init_pair(3, COLOR_GREEN, $background);
67                 init_pair(4, COLOR_CYAN, $background);
68                 init_pair(5, COLOR_BLUE, $background);
69                 init_pair(6, COLOR_MAGENTA, $background);
70         }
71         
72         $top = $scr->subwin(LINES()-4, COLS, 0, 0);
73         $top->intrflush(0);
74         $top->scrollok(1);
75         $scr->addstr(LINES()-4, 0, '-' x COLS);
76         $bot = $scr->subwin(3, COLS, LINES()-3, 0);
77         $bot->intrflush(0);
78         $bot->scrollok(1);
79         $bot->keypad(1);
80         $bot->move(1,0);
81         $scr->refresh();
82         
83         $pagel = LINES()-4;
84 }
85
86 sub do_resize
87 {
88         undef $scr;
89         do_initscr();
90 }
91
92 # cease communications
93 sub cease
94 {
95         my $sendz = shift;
96         if ($conn && $sendz) {
97                 $conn->send_now("Z$call|bye...\n");
98         }
99         endwin();
100         dbgclose();
101         print @_ if @_;
102         exit(0);        
103 }
104
105 # terminate program from signal
106 sub sig_term
107 {
108         cease(1, @_);
109 }
110
111 # determine the colour of the line
112 sub setattr
113 {
114         if ($has_colors) {
115                 foreach my $ref (@colors) {
116                         if ($_[0] =~ m{$$ref[0]}) {
117                                 $top->attrset($$ref[1]);
118                                 last;
119                         }
120                 }
121         }
122 }
123
124 # measure the no of screen lines a line will take
125 sub measure
126 {
127         my $line = shift;
128         return 0 unless $line;
129
130         my $l = length $line;
131         my $lines = int ($l / COLS());
132         $lines++ if $l / COLS() > $lines;
133         return $lines;
134 }
135
136 # display the top screen
137 sub show_screen
138 {
139         if ($spos == @shistory - 1) {
140
141                 # if we really are scrolling thru at the end of the history
142                 my $line = $shistory[-1];
143                 $top->addstr("\n") if $spos > 0;
144                 setattr($line);
145                 $top->addstr($line);
146                 $top->attrset(COLOR_PAIR(0)) if $has_colors;
147                 $spos = @shistory;
148                 
149         } else {
150                 
151                 # anywhere else
152                 my ($i, $l);
153                 my $p = $spos-1;
154                 for ($i = 0; $i <= $pagel && $p >= 0; ) {
155                         $l = measure($shistory[$p]);
156                         $i += $l;
157                         $p-- if $i < $pagel;
158                 }
159                 $p = 0 if $p < 0;
160                 
161                 $top->move(0, 0);
162                 $top->attrset(COLOR_PAIR(0)) if $has_colors;
163                 $top->clrtobot();
164                 for ($i = 0; $i <= $pagel && $p < @shistory; $p++) {
165                         my $line = $shistory[$p];
166                         my $lines = measure($line);
167                         last if $i + $lines > $pagel;
168                         $top->move($i, 0);
169                         setattr($line);
170                         $top->addstr($line);
171                         $top->attrset(COLOR_PAIR(0)) if $has_colors;
172                         $i += $lines;
173                 }
174                 $spos = $p;
175         }
176         $top->refresh();
177 }
178
179 # add a line to the end of the top screen
180 sub addtotop
181 {
182         my $inbuf = shift;
183         push @shistory, $inbuf;
184         shift @shistory if @shistory > $maxshist;
185         show_screen();
186 }
187
188 # handle incoming messages
189 sub rec_socket
190 {
191         my ($con, $msg, $err) = @_;
192         if (defined $err && $err) {
193                 cease(1);
194         }
195         if (defined $msg) {
196                 my ($sort, $call, $line) = $msg =~ /^(\w)(\S+)\|(.*)$/;
197                 
198                 if ($sort eq 'D') {
199                         addtotop($line);
200                 } elsif ($sort eq 'Z') { # end, disconnect, go, away .....
201                         cease(0);
202                 }         
203         }
204         $top->refresh();
205         $lasttime = time; 
206 }
207
208 sub rec_stdin
209 {
210         my ($fh) = @_;
211
212         $r = $bot->getch();
213         
214         #  my $prbuf;
215         #  $prbuf = $buf;
216         #  $prbuf =~ s/\r/\\r/;
217         #  $prbuf =~ s/\n/\\n/;
218         #  print "sys: $r ($prbuf)\n";
219         if (defined $r) {
220                 
221                 if ($r eq KEY_ENTER || $r eq "\n" || $r eq "\r") {
222                         
223                         # save the lines
224                         if ($inbuf) {
225                                 # check for a pling and do a search back for a command
226                                 if ($inbuf =~ /^!/o) {
227                                         my $i;
228                                         $inbuf =~ s/^!//o;
229                                         for ($i = $#khistory; $i >= 0; $i--) {
230                                                 if ($khistory[$i] =~ /^$inbuf/) {
231                                                         $inbuf = $khistory[$i];
232                                                         last;
233                                                 }
234                                         }
235                                         if ($i < 0) {
236                                                 beep();
237                                                 return;
238                                         }
239                                 }
240                                 push @khistory, $inbuf if $inbuf;
241                                 shift @khistory if @khistory > $maxkhist;
242                                 $khistpos = @khistory;
243                                 $bot->move(0,0);
244                                 $bot->clrtoeol();
245                                 $bot->addstr(substr($inbuf, 0, COLS));
246                         }
247
248                         # add it to the monitor window
249                         addtotop($inbuf) if $inbuf;
250                 
251                         # send it to the cluster
252                         $inbuf = " " unless $inbuf;
253                         $conn->send_later("I$call|$inbuf");
254                         $inbuf = "";
255                         $pos = $lth = 0;
256                 } elsif ($r eq KEY_UP || $r eq "\020") {
257                         if ($khistpos > 0) {
258                                 --$khistpos;
259                                 $inbuf = $khistory[$khistpos];
260                                 $pos = $lth = length $inbuf;
261                         } else {
262                                 beep();
263                         }
264                 } elsif ($r eq KEY_DOWN || $r eq "\016") {
265                         if ($khistpos < @khistory - 1) {
266                                 ++$khistpos;
267                                 $inbuf = $khistory[$khistpos];
268                                 $pos = $lth = length $inbuf;
269                         } else {
270                                 beep();
271                         }
272                 } elsif ($r eq KEY_PPAGE || $r eq "\032") {
273                         if ($spos > 0) {
274                                 my ($i, $l);
275                                 for ($i = 0; $i <= $pagel && $spos >= 0; ) {
276                                         $l = measure($shistory[$spos]);
277                                         $i += $l;
278                                         $spos-- if $i <= $pagel;
279                                 }
280                                 $spos = 0 if $spos < 0;
281                                 show_screen();
282                         } else {
283                                 beep();
284                         }
285                 } elsif ($r eq KEY_NPAGE || $r eq "\026") {
286                         if ($spos < @shistory - 1) {
287                                 my ($i, $l);
288                                 for ($i = 0; $i <= $pagel && $spos <= @shistory; ) {
289                                         $l = measure($shistory[$spos]);
290                                         $i += $l;
291                                         $spos++ if $i <= $pagel;
292                                 }
293                                 $spos = @shistory if $spos > @shistory;
294                                 show_screen();
295                         } else {
296                                 beep();
297                         }
298                 } elsif ($r eq KEY_LEFT || $r eq "\002") {
299                         if ($pos > 0) {
300                                 --$pos;
301                         } else {
302                                 beep();
303                         }
304                 } elsif ($r eq KEY_RIGHT || $r eq "\006") {
305                         if ($pos < $lth) {
306                                 ++$pos;
307                         } else {
308                                 beep();
309                         }
310                 } elsif ($r eq KEY_HOME || $r eq "\001") {
311                         $pos = 0;
312                 } elsif ($r eq KEY_END || $r eq "\005") {
313                         $pos = $lth;
314                 } elsif ($r eq KEY_BACKSPACE || $r eq "\010") {
315                         if ($pos > 0) {
316                                 my $a = substr($inbuf, 0, $pos-1);
317                                 my $b = substr($inbuf, $pos) if $pos < $lth;
318                                 $b = "" unless $b;
319                                 
320                                 $inbuf = $a . $b;
321                                 --$lth;
322                                 --$pos;
323                         } else {
324                                 beep();
325                         }
326                 } elsif ($r eq KEY_DC || $r eq "\004") {
327                         if ($pos < $lth) {
328                                 my $a = substr($inbuf, 0, $pos);
329                                 my $b = substr($inbuf, $pos+1) if $pos < $lth;
330                                 $b = "" unless $b;
331                                 
332                                 $inbuf = $a . $b;
333                                 --$lth;
334                         } else {
335                                 beep();
336                         }
337                 } elsif ($r ge ' ' && $r le '~') {
338                         # move the top screen back to the bottom if you type something
339                         if ($spos < @shistory - 1) {
340                                 $spos = @shistory;
341                                 show_screen();
342                         }
343                 
344                         # insert the character into the keyboard buffer
345                         if ($pos < $lth) {
346                                 my $a = substr($inbuf, 0, $pos);
347                                 my $b = substr($inbuf, $pos);
348                                 $inbuf = $a . $r . $b;
349                         } else {
350                                 $inbuf .= $r;
351                         }
352                         $pos++;
353                         $lth++;
354                 } elsif ($r eq "\014" || $r eq "\022") {
355                         #do_resize();
356                         return;
357                 } elsif ($r eq "\013") {
358                         $inbuf = substr($inbuf, 0, $pos);
359                         $lth = length $inbuf;
360                 } else {
361                         beep();
362                 }
363                 $bot->move(1, 0);
364                 $bot->clrtobot();
365                 $bot->addstr($inbuf);
366         } 
367         $bot->move(1, $pos);
368         $bot->refresh();
369 }
370
371
372 #
373 # deal with args
374 #
375
376 $call = uc shift @ARGV if @ARGV;
377 $call = uc $myalias if !$call;
378
379 if ($call eq $mycall) {
380         print "You cannot connect as your cluster callsign ($mycall)\n";
381         exit(0);
382 }
383
384 $conn = Msg->connect("$clusteraddr", $clusterport, \&rec_socket);
385 if (! $conn) {
386         if (-r "$data/offline") {
387                 open IN, "$data/offline" or die;
388                 while (<IN>) {
389                         print $_;
390                 }
391                 close IN;
392         } else {
393                 print "Sorry, the cluster $mycall is currently off-line\n";
394         }
395         exit(0);
396 }
397
398
399 $SIG{'INT'} = \&sig_term;
400 $SIG{'TERM'} = \&sig_term;
401 #$SIG{'WINCH'} = \&do_resize;
402 $SIG{'HUP'} = 'IGNORE';
403
404 do_initscr();
405
406 $SIG{__DIE__} = \&sig_term;
407
408 $conn->send_now("A$call|$connsort");
409 $conn->send_now("I$call|set/page $maxshist");
410 $conn->send_now("I$call|set/nobeep");
411
412 Msg->set_event_handler(\*STDIN, "read" => \&rec_stdin);
413
414 for (;;) {
415         my $t;
416         Msg->event_loop(1, 0.010);
417         $top->refresh() if $top->is_wintouched;
418         $bot->refresh();
419         $t = time;
420         if ($t > $lasttime) {
421                 $lasttime = $t;
422         }
423 }
424
425 exit(0);