1 | use strict; |
---|
2 | use warnings; |
---|
3 | |
---|
4 | package BarnOwl; |
---|
5 | |
---|
6 | use base qw(Exporter); |
---|
7 | our @EXPORT_OK = qw(command getcurmsg getnumcols getidletime |
---|
8 | zephyr_getsender zephyr_getrealm zephyr_zwrite |
---|
9 | zephyr_stylestrip zephyr_smartstrip_user zephyr_getsubs |
---|
10 | queue_message admin_message |
---|
11 | start_question start_password start_edit_win |
---|
12 | get_data_dir get_config_dir popless_text popless_ztext |
---|
13 | error debug |
---|
14 | create_style getnumcolors wordwrap |
---|
15 | add_dispath remove_dispatch |
---|
16 | new_command |
---|
17 | new_variable_int new_variable_bool new_variable_string |
---|
18 | quote redisplay); |
---|
19 | our %EXPORT_TAGS = (all => \@EXPORT_OK); |
---|
20 | |
---|
21 | BEGIN { |
---|
22 | # bootstrap in C bindings and glue |
---|
23 | *owl:: = \*BarnOwl::; |
---|
24 | bootstrap BarnOwl 1.2; |
---|
25 | }; |
---|
26 | |
---|
27 | use lib(get_data_dir() . "/lib"); |
---|
28 | use lib(get_config_dir() . "/lib"); |
---|
29 | |
---|
30 | use BarnOwl::Hook; |
---|
31 | use BarnOwl::Hooks; |
---|
32 | use BarnOwl::Message; |
---|
33 | use BarnOwl::Style; |
---|
34 | use BarnOwl::Timer; |
---|
35 | use BarnOwl::Editwin; |
---|
36 | use BarnOwl::Completion; |
---|
37 | |
---|
38 | =head1 NAME |
---|
39 | |
---|
40 | BarnOwl |
---|
41 | |
---|
42 | =head1 DESCRIPTION |
---|
43 | |
---|
44 | The BarnOwl module contains the core of BarnOwl's perl |
---|
45 | bindings. Source in this module is also run at startup to bootstrap |
---|
46 | barnowl by defining things like the default style. |
---|
47 | |
---|
48 | =for NOTE |
---|
49 | These following functions are defined in perlglue.xs. Keep the |
---|
50 | documentation here in sync with the user-visible commands defined |
---|
51 | there! |
---|
52 | |
---|
53 | =head2 command STRING |
---|
54 | |
---|
55 | Executes a BarnOwl command in the same manner as if the user had |
---|
56 | executed it at the BarnOwl command prompt. If the command returns a |
---|
57 | value, return it as a string, otherwise return undef. |
---|
58 | |
---|
59 | =head2 getcurmsg |
---|
60 | |
---|
61 | Returns the current message as a C<BarnOwl::Message> subclass, or |
---|
62 | undef if there is no message selected |
---|
63 | |
---|
64 | =head2 getnumcols |
---|
65 | |
---|
66 | Returns the width of the display window BarnOwl is currently using |
---|
67 | |
---|
68 | =head2 getidletime |
---|
69 | |
---|
70 | Returns the length of time since the user has pressed a key, in |
---|
71 | seconds. |
---|
72 | |
---|
73 | =head2 zephyr_getrealm |
---|
74 | |
---|
75 | Returns the zephyr realm barnowl is running in |
---|
76 | |
---|
77 | =head2 zephyr_getsender |
---|
78 | |
---|
79 | Returns the fully-qualified name of the zephyr sender barnowl is |
---|
80 | running as, e.g. C<nelhage@ATHENA.MIT.EDU> |
---|
81 | |
---|
82 | =head2 zephyr_zwrite COMMAND MESSAGE |
---|
83 | |
---|
84 | Sends a zephyr programmatically. C<COMMAND> should be a C<zwrite> |
---|
85 | command line, and C<MESSAGE> is the zephyr body to send. |
---|
86 | |
---|
87 | =head2 ztext_stylestrip STRING |
---|
88 | |
---|
89 | Strips zephyr formatting from a string and returns the result |
---|
90 | |
---|
91 | =head2 zephyr_getsubs |
---|
92 | |
---|
93 | Returns the list of subscription triples <class,instance,recipient>, |
---|
94 | separated by newlines. |
---|
95 | |
---|
96 | =head2 queue_message MESSAGE |
---|
97 | |
---|
98 | Enqueue a message in the BarnOwl message list, logging it and |
---|
99 | processing it appropriately. C<MESSAGE> should be an instance of |
---|
100 | BarnOwl::Message or a subclass. |
---|
101 | |
---|
102 | =head2 admin_message HEADER BODY |
---|
103 | |
---|
104 | Display a BarnOwl B<Admin> message, with the given header and body. |
---|
105 | |
---|
106 | =head2 start_question PROMPT CALLBACK |
---|
107 | |
---|
108 | Displays C<PROMPT> on the screen and lets the user enter a line of |
---|
109 | text, and calls C<CALLBACK>, which must be a perl subroutine |
---|
110 | reference, with the text the user entered |
---|
111 | |
---|
112 | =head2 start_password PROMPT CALLBACK |
---|
113 | |
---|
114 | Like C<start_question>, but echoes the user's input as C<*>s when they |
---|
115 | input. |
---|
116 | |
---|
117 | =head2 start_edit_win PROMPT CALLBACK |
---|
118 | |
---|
119 | Like C<start_question>, but displays C<PROMPT> on a line of its own |
---|
120 | and opens the editwin. If the user cancels the edit win, C<CALLBACK> |
---|
121 | is not invoked. |
---|
122 | |
---|
123 | =head2 get_data_dir |
---|
124 | |
---|
125 | Returns the BarnOwl system data directory, where system libraries and |
---|
126 | modules are stored |
---|
127 | |
---|
128 | =head2 get_config_dir |
---|
129 | |
---|
130 | Returns the BarnOwl user configuration directory, where user modules |
---|
131 | and configuration are stored (by default, C<$HOME/.owl>) |
---|
132 | |
---|
133 | =head2 popless_text TEXT |
---|
134 | |
---|
135 | Show a popup window containing the given C<TEXT> |
---|
136 | |
---|
137 | =head2 popless_ztext TEXT |
---|
138 | |
---|
139 | Show a popup window containing the provided zephyr-formatted C<TEXT> |
---|
140 | |
---|
141 | =head2 error STRING |
---|
142 | |
---|
143 | Reports an error and log it in `show errors'. Note that in any |
---|
144 | callback or hook called in perl code from BarnOwl, a C<die> will be |
---|
145 | caught and passed to C<error>. |
---|
146 | |
---|
147 | =head2 debug STRING |
---|
148 | |
---|
149 | Logs a debugging message to BarnOwl's debug log |
---|
150 | |
---|
151 | =head2 getnumcolors |
---|
152 | |
---|
153 | Returns the number of colors this BarnOwl is capable of displaying |
---|
154 | |
---|
155 | =head2 add_dispatch FD CALLBACK |
---|
156 | |
---|
157 | Adds a file descriptor to C<BarnOwl>'s internal C<select()> |
---|
158 | loop. C<CALLBACK> will be invoked whenever data is available to be |
---|
159 | read from C<FD>. |
---|
160 | |
---|
161 | =head2 remove_dispatch FD |
---|
162 | |
---|
163 | Remove a file descriptor previously registered via C<add_dispatch> |
---|
164 | |
---|
165 | =head2 create_style NAME OBJECT |
---|
166 | |
---|
167 | Creates a new barnowl style with the given NAME defined by the given |
---|
168 | object. The object must have a C<description> method which returns a |
---|
169 | string description of the style, and a and C<format_message> method |
---|
170 | which accepts a C<BarnOwl::Message> object and returns a string that |
---|
171 | is the result of formatting the message for display. |
---|
172 | |
---|
173 | =head2 redisplay |
---|
174 | |
---|
175 | Redraw all of the messages on screen. This is useful if you've just |
---|
176 | changed how a style renders messages. |
---|
177 | |
---|
178 | =cut |
---|
179 | |
---|
180 | # perlconfig.c will set this to the value of the -c command-line |
---|
181 | # switch, if present. |
---|
182 | our $configfile; |
---|
183 | |
---|
184 | our @all_commands; |
---|
185 | |
---|
186 | if(!$configfile && -f $ENV{HOME} . "/.barnowlconf") { |
---|
187 | $configfile = $ENV{HOME} . "/.barnowlconf"; |
---|
188 | } |
---|
189 | $configfile ||= $ENV{HOME}."/.owlconf"; |
---|
190 | |
---|
191 | # populate global variable space for legacy owlconf files |
---|
192 | sub _receive_msg_legacy_wrap { |
---|
193 | my ($m) = @_; |
---|
194 | $m->legacy_populate_global(); |
---|
195 | return &BarnOwl::Hooks::_receive_msg($m); |
---|
196 | } |
---|
197 | |
---|
198 | =head2 new_command NAME FUNC [{ARGS}] |
---|
199 | |
---|
200 | Add a new owl command. When owl executes the command NAME, FUNC will |
---|
201 | be called with the arguments passed to the command, with NAME as the |
---|
202 | first argument. |
---|
203 | |
---|
204 | ARGS should be a hashref containing any or all of C<summary>, |
---|
205 | C<usage>, or C<description> keys: |
---|
206 | |
---|
207 | =over 4 |
---|
208 | |
---|
209 | =item summary |
---|
210 | |
---|
211 | A one-line summary of the purpose of the command |
---|
212 | |
---|
213 | =item usage |
---|
214 | |
---|
215 | A one-line usage synopsis, showing available options and syntax |
---|
216 | |
---|
217 | =item description |
---|
218 | |
---|
219 | A longer description of the syntax and semantics of the command, |
---|
220 | explaining usage and options |
---|
221 | |
---|
222 | =back |
---|
223 | |
---|
224 | =cut |
---|
225 | |
---|
226 | sub new_command { |
---|
227 | my $name = shift; |
---|
228 | my $func = shift; |
---|
229 | my $args = shift || {}; |
---|
230 | my %args = ( |
---|
231 | summary => "", |
---|
232 | usage => "", |
---|
233 | description => "", |
---|
234 | %{$args} |
---|
235 | ); |
---|
236 | |
---|
237 | BarnOwl::Internal::new_command($name, $func, $args{summary}, $args{usage}, $args{description}); |
---|
238 | } |
---|
239 | |
---|
240 | =head2 new_variable_int NAME [{ARGS}] |
---|
241 | |
---|
242 | =head2 new_variable_bool NAME [{ARGS}] |
---|
243 | |
---|
244 | =head2 new_variable_string NAME [{ARGS}] |
---|
245 | |
---|
246 | Add a new owl variable, either an int, a bool, or a string, with the |
---|
247 | specified name. |
---|
248 | |
---|
249 | ARGS can optionally contain the following keys: |
---|
250 | |
---|
251 | =over 4 |
---|
252 | |
---|
253 | =item default |
---|
254 | |
---|
255 | The default and initial value for the variable |
---|
256 | |
---|
257 | =item summary |
---|
258 | |
---|
259 | A one-line summary of the variable's purpose |
---|
260 | |
---|
261 | =item description |
---|
262 | |
---|
263 | A longer description of the function of the variable |
---|
264 | |
---|
265 | =back |
---|
266 | |
---|
267 | =cut |
---|
268 | |
---|
269 | sub new_variable_int { |
---|
270 | unshift @_, \&BarnOwl::Internal::new_variable_int, 0; |
---|
271 | goto \&_new_variable; |
---|
272 | } |
---|
273 | |
---|
274 | sub new_variable_bool { |
---|
275 | unshift @_, \&BarnOwl::Internal::new_variable_bool, 0; |
---|
276 | goto \&_new_variable; |
---|
277 | } |
---|
278 | |
---|
279 | sub new_variable_string { |
---|
280 | unshift @_, \&BarnOwl::Internal::new_variable_string, ""; |
---|
281 | goto \&_new_variable; |
---|
282 | } |
---|
283 | |
---|
284 | sub _new_variable { |
---|
285 | my $func = shift; |
---|
286 | my $default_default = shift; |
---|
287 | my $name = shift; |
---|
288 | my $args = shift || {}; |
---|
289 | my %args = ( |
---|
290 | summary => "", |
---|
291 | description => "", |
---|
292 | default => $default_default, |
---|
293 | %{$args}); |
---|
294 | $func->($name, $args{default}, $args{summary}, $args{description}); |
---|
295 | } |
---|
296 | |
---|
297 | =head2 quote LIST |
---|
298 | |
---|
299 | Quotes each of the strings in LIST and returns a string that will be |
---|
300 | correctly decoded to LIST by the BarnOwl command parser. For example: |
---|
301 | |
---|
302 | quote('zwrite', 'andersk', '-m', 'Hello, world!') |
---|
303 | # returns "zwrite andersk -m 'Hello, world!'" |
---|
304 | |
---|
305 | =cut |
---|
306 | |
---|
307 | sub quote { |
---|
308 | my @quoted; |
---|
309 | for my $str (@_) { |
---|
310 | if ($str eq '') { |
---|
311 | push @quoted, "''"; |
---|
312 | } elsif ($str !~ /['" ]/) { |
---|
313 | push @quoted, "$str"; |
---|
314 | } elsif ($str !~ /'/) { |
---|
315 | push @quoted, "'$str'"; |
---|
316 | } else { |
---|
317 | (my $qstr = $str) =~ s/"/"'"'"/g; |
---|
318 | push @quoted, '"' . $qstr . '"'; |
---|
319 | } |
---|
320 | } |
---|
321 | return join(' ', @quoted); |
---|
322 | } |
---|
323 | |
---|
324 | =head2 Modify filters by appending text |
---|
325 | |
---|
326 | =cut |
---|
327 | |
---|
328 | sub register_builtin_commands { |
---|
329 | # Filter modification |
---|
330 | BarnOwl::new_command("filterappend", |
---|
331 | sub { filter_append_helper('appending', '', @_); }, |
---|
332 | { |
---|
333 | summary => "append '<text>' to filter", |
---|
334 | usage => "filterappend <filter> <text>", |
---|
335 | }); |
---|
336 | |
---|
337 | BarnOwl::new_command("filterand", |
---|
338 | sub { filter_append_helper('and-ing', 'and', @_); }, |
---|
339 | { |
---|
340 | summary => "append 'and <text>' to filter", |
---|
341 | usage => "filterand <filter> <text>", |
---|
342 | }); |
---|
343 | |
---|
344 | BarnOwl::new_command("filteror", |
---|
345 | sub { filter_append_helper('or-ing', 'or', @_); }, |
---|
346 | { |
---|
347 | summary => "append 'or <text>' to filter", |
---|
348 | usage => "filteror <filter> <text>", |
---|
349 | }); |
---|
350 | |
---|
351 | # Date formatting |
---|
352 | BarnOwl::new_command("showdate", |
---|
353 | sub { BarnOwl::time_format('showdate', '%Y-%m-%d %H:%M'); }, |
---|
354 | { |
---|
355 | summary => "Show date in timestamps for supporting styles.", |
---|
356 | usage => "showdate", |
---|
357 | }); |
---|
358 | |
---|
359 | BarnOwl::new_command("hidedate", |
---|
360 | sub { BarnOwl::time_format('hidedate', '%H:%M'); }, |
---|
361 | { |
---|
362 | summary => "Don't show date in timestamps for supporting styles.", |
---|
363 | usage => "hidedate", |
---|
364 | }); |
---|
365 | |
---|
366 | BarnOwl::new_command("timeformat", |
---|
367 | \&BarnOwl::time_format, |
---|
368 | { |
---|
369 | summary => "Set the format for timestamps and re-display messages", |
---|
370 | usage => "timeformat <format>", |
---|
371 | }); |
---|
372 | |
---|
373 | } |
---|
374 | |
---|
375 | $BarnOwl::Hooks::startup->add("BarnOwl::register_builtin_commands"); |
---|
376 | |
---|
377 | =head3 filter_append_helper ACTION SEP FUNC FILTER APPEND_TEXT |
---|
378 | |
---|
379 | Helper to append to filters. |
---|
380 | |
---|
381 | =cut |
---|
382 | |
---|
383 | sub filter_append_helper |
---|
384 | { |
---|
385 | my $action = shift; |
---|
386 | my $sep = shift; |
---|
387 | my $func = shift; |
---|
388 | my $filter = shift; |
---|
389 | my @append = @_; |
---|
390 | my $oldfilter = BarnOwl::getfilter($filter); |
---|
391 | chomp $oldfilter; |
---|
392 | my $newfilter = "$oldfilter $sep " . quote(@append); |
---|
393 | my $msgtext = "To filter " . quote($filter) . " $action\n" . quote(@append) . "\nto get\n$newfilter"; |
---|
394 | if (BarnOwl::getvar('showfilterchange') eq 'on') { |
---|
395 | BarnOwl::admin_message("Filter", $msgtext); |
---|
396 | } |
---|
397 | BarnOwl::filter($filter, $newfilter); |
---|
398 | return; |
---|
399 | } |
---|
400 | BarnOwl::new_variable_bool("showfilterchange", |
---|
401 | { default => 1, |
---|
402 | summary => 'Show modifications to filters by filterappend and friends.'}); |
---|
403 | |
---|
404 | =head3 time_format FORMAT |
---|
405 | |
---|
406 | Set the format for displaying times (variable timeformat) and redisplay |
---|
407 | messages. |
---|
408 | |
---|
409 | =cut |
---|
410 | |
---|
411 | my $timeformat = '%H:%M'; |
---|
412 | |
---|
413 | sub time_format |
---|
414 | { |
---|
415 | my $function = shift; |
---|
416 | my $format = shift; |
---|
417 | if(!$format) |
---|
418 | { |
---|
419 | return $timeformat; |
---|
420 | } |
---|
421 | if(shift) |
---|
422 | { |
---|
423 | return "Wrong number of arguments for command"; |
---|
424 | } |
---|
425 | $timeformat = $format; |
---|
426 | redisplay(); |
---|
427 | } |
---|
428 | |
---|
429 | =head3 default_zephyr_signature |
---|
430 | |
---|
431 | Compute the default zephyr signature. |
---|
432 | |
---|
433 | =cut |
---|
434 | |
---|
435 | sub default_zephyr_signature |
---|
436 | { |
---|
437 | if (my $zsig = getvar('zsig')) { |
---|
438 | return $zsig; |
---|
439 | } |
---|
440 | if (my $zsigproc = getvar('zsigproc')) { |
---|
441 | return `$zsigproc`; |
---|
442 | } |
---|
443 | my $zwrite_signature = get_zephyr_variable('zwrite-signature'); |
---|
444 | if (defined($zwrite_signature)) { |
---|
445 | return $zwrite_signature; |
---|
446 | } |
---|
447 | my $name = ((getpwuid($<))[6]); |
---|
448 | $name =~ s/,.*//; |
---|
449 | return $name; |
---|
450 | } |
---|
451 | |
---|
452 | # Stub for owl::startup / BarnOwl::startup, so it isn't bound to the |
---|
453 | # startup command. This may be redefined in a user's configfile. |
---|
454 | sub startup |
---|
455 | { |
---|
456 | } |
---|
457 | |
---|
458 | 1; |
---|