Home

Script: spell_menu.pl

Popup menu to choose spell checker corrections. (for WeeChat ≥ 0.4.0, requires: menu.pl)
Author: Nei, version 0.4, GPL3 — added: 2013-01-08, updated: 2013-07-10
  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
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
use strict; use warnings;
$INC{'Encode/ConfigLocal.pm'}=1;
require Encode;

# spell_menu.pl is written by Nei <anti.teamidiot.de>
# and licensed under the under GNU General Public License v3
# or any later version

# to read the following docs, you can use "perldoc spell_menu.pl"

=head1 NAME

spell_menu - popup menu for the weechat spell checker (weechat edition)

=head1 USAGE

type the tab key on a misspelt word to bring up the correction
pop-up. make sure you have set

  aspell.check.enabled on
  aspell.check.suggestions >-1

and a dictionary set, e.g in

  aspell.check.default_dict

you also need to have a menu script, if you don't have it yet:

  /script install menu.pl

hint: if it breaks your tab completion, you can toggle the spell
checker (default key in weechat is Alt+S)

=head1 CAVEATS

=over

=item *

on update of spell_menu from v0.3 to v0.4 you might need to do

  /unset menu.var.spell.*
  /script reload spell_menu

to get rid of stale entries. sorry about that.

=back

=head1 SETTINGS

the settings are usually found in the

  plugins.var.perl.spell_menu

namespace, that is, type

  /set plugins.var.perl.spell_menu.*

to see them and

  /set plugins.var.perl.spell_menu.SETTINGNAME VALUE

to change a setting C<SETTINGNAME> to a new value C<VALUE>. Finally,

  /unset plugins.var.perl.spell_menu.SETTINGNAME

will reset a setting to its default value.

the following settings are available:

=head2 no_complete

don't open the spell menu on tab completion. make a binding yourself
to call /spell_menu, for example

  /key bind meta-c /spell_menu

=head2 complete_near

only use tab complete to open the menu if the cursor is next to the
wrong word

=head2 complete_noend

don't spell correct with tab if exactly at the end of a word

=cut

use constant SCRIPT_NAME => 'spell_menu';
weechat::register(SCRIPT_NAME, 'Nei <anti.teamidiot.de>', '0.4', 'GPL3', 'spell checker menu', '', '') || return;
sub SCRIPT_FILE() {
	my $infolistptr = weechat::infolist_get('perl_script', '', SCRIPT_NAME);
	my $filename = weechat::infolist_string($infolistptr, 'filename') if weechat::infolist_next($infolistptr);
	weechat::infolist_free($infolistptr);
	return $filename unless @_;
}

{
package Nlib;
# this is a weechat perl library
use strict; use warnings; no warnings 'redefine';

## i2h -- copy weechat infolist content into perl hash
## $infolist - name of the infolist in weechat
## $ptr - pointer argument (infolist dependend)
## @args - arguments to the infolist (list dependend)
## $fields - string of ref type "fields" if only certain keys are needed (optional)
## returns perl list with perl hashes for each infolist entry
sub i2h {
	my %i2htm = (i => 'integer', s => 'string', p => 'pointer', b => 'buffer', t => 'time');
	local *weechat::infolist_buffer = sub { '(not implemented)' };
	my ($infolist, $ptr, @args) = @_;
	$ptr ||= "";
	my $fields = ref $args[-1] eq 'fields' ? ${ pop @args } : undef;
	my $infptr = weechat::infolist_get($infolist, $ptr, do { local $" = ','; "@args" });
	my @infolist;
	while (weechat::infolist_next($infptr)) {
		my @fields = map {
			my ($t, $v) = split ':', $_, 2;
			bless \$v, $i2htm{$t};
		}
		split ',',
			($fields || weechat::infolist_fields($infptr));
		push @infolist, +{ do {
			my (%list, %local, @local);
			map {
				my $fn = 'weechat::infolist_'.ref $_;
				my $r = do { no strict 'refs'; &$fn($infptr, $$_) };
				if ($$_ =~ /^localvar_name_(\d+)$/) {
					$local[$1] = $r;
					()
				}
				elsif ($$_ =~ /^(localvar)_value_(\d+)$/) {
					$local{$local[$2]} = $r;
					$1 => \%local
				}
				elsif ($$_ =~ /(.*?)((?:_\d+)+)$/) {
					my ($key, $idx) = ($1, $2);
					my @idx = split '_', $idx; shift @idx;
					my $target = \$list{$key};
					for my $x (@idx) {
						my $o = 1;
						if ($key eq 'key' or $key eq 'key_command') {
							$o = 0;
						}
						if ($x-$o < 0) {
							local $" = '|';
							weechat::print('',"list error: $target/$$_/$key/$x/$idx/@idx(@_)");
							$o = 0;
						}
						$target = \$$target->[$x-$o]
					}
					$$target = $r;

					$key => $list{$key}
				}
				else {
					$$_ => $r
				}
			} @fields
		} };
	}
	weechat::infolist_free($infptr);
	!wantarray && @infolist ? \@infolist : @infolist
}

## hdh -- hdata helper
## $_[0] - arg pointer or hdata list name
## $_[1] - hdata name
## $_[2..$#_] - hdata variable name
## $_[-1] - hashref with key/value to update (optional)
## returns value of hdata, and hdata name in list ctx, or number of variables updated
sub hdh {
	if (@_ > 1 && $_[0] !~ /^0x/ && $_[0] !~ /^\d+$/) {
		my $arg = shift;
		unshift @_, weechat::hdata_get_list(weechat::hdata_get($_[0]), $arg);
	}
	while (@_ > 2) {
		my ($arg, $name, $var) = splice @_, 0, 3;
		my $hdata = weechat::hdata_get($name);
		unless (ref $var eq 'HASH') {
			$var =~ s/!(.*)/weechat::hdata_get_string($hdata, $1)/e;
			(my $plain_var = $var) =~ s/^\d+\|//;
			my $type = weechat::hdata_get_var_type_string($hdata, $plain_var);
			if ($type eq 'pointer') {
				my $name = weechat::hdata_get_var_hdata($hdata, $var);
				unshift @_, $name if $name;
			}

			my $fn = "weechat::hdata_$type";
			unshift @_, do { no strict 'refs';
							 &$fn($hdata, $arg, $var) };
		}
		else {
			return weechat::hdata_update($hdata, $arg, $var);
		}
	}
	wantarray ? @_ : $_[0]
}

use Pod::Select qw();
use Pod::Simple::TextContent;

## get_desc_from_pod -- return setting description from pod documentation
## $file - filename with pod
## $setting - name of setting
## returns description as text
sub get_desc_from_pod {
	my $file = shift;
	return unless -s $file;
	my $setting = shift;

	open my $pod_sel, '>', \my $ss;
	Pod::Select::podselect({
	   -output => $pod_sel,
	   -sections => ["SETTINGS/$setting"]}, $file);

	my $pt = new Pod::Simple::TextContent;
	$pt->output_string(\my $ss_f);
	$pt->parse_string_document($ss);

	my ($res) = $ss_f =~ /^\s*\Q$setting\E\s+(.*)\s*/;
	$res
}

## get_settings_from_pod -- retrieve all settings in settings section of pod
## $file - file with pod
## returns list of all settings
sub get_settings_from_pod {
	my $file = shift;
	return unless -s $file;

	open my $pod_sel, '>', \my $ss;
	Pod::Select::podselect({
	   -output => $pod_sel,
	   -sections => ["SETTINGS//!.+"]}, $file);

	$ss =~ /^=head2\s+(.*)\s*$/mg
}

## mangle_man_for_wee -- turn man output into weechat codes
## @_ - list of grotty lines that should be turned into weechat attributes
## returns modified lines and modifies lines in-place
sub mangle_man_for_wee {
	for (@_) {
		s/_\x08(.)/weechat::color('underline').$1.weechat::color('-underline')/ge;
		s/(.)\x08\1/weechat::color('bold').$1.weechat::color('-bold')/ge;
	}
	wantarray ? @_ : $_[0]
}

## read_manpage -- read a man page in weechat window
## $file - file with pod
## $name - buffer name
sub read_manpage {
	my $caller_package = (caller)[0];
	my $file = shift;
	my $name = shift;

	if (my $obuf = weechat::buffer_search('perl', "man $name")) {
		eval qq{
			package $caller_package;
			weechat::buffer_close(\$obuf);
		};
	}

	my @wee_keys = Nlib::i2h('key');
	my @keys;

	my $winptr = weechat::current_window();
	my ($wininfo) = Nlib::i2h('window', $winptr);
	my $buf = weechat::buffer_new("man $name", '', '', '', '');
	return weechat::WEECHAT_RC_OK unless $buf;

	my $width = $wininfo->{chat_width};
	--$width if $wininfo->{chat_width} < $wininfo->{width} || ($wininfo->{width_pct} < 100 && (grep { $_->{y} == $wininfo->{y} } Nlib::i2h('window'))[-1]{x} > $wininfo->{x});
	$width -= 2; # when prefix is shown

	weechat::buffer_set($buf, 'time_for_each_line', 0);
	eval qq{
		package $caller_package;
		weechat::buffer_set(\$buf, 'display', 'auto');
	};
	die $@ if $@;

	@keys = map { $_->{key} }
		grep { $_->{command} eq '/input history_previous' ||
			   $_->{command} eq '/input history_global_previous' } @wee_keys;
	@keys = 'meta2-A' unless @keys;
	weechat::buffer_set($buf, "key_bind_$_", '/window scroll -1') for @keys;

	@keys = map { $_->{key} }
		grep { $_->{command} eq '/input history_next' ||
			   $_->{command} eq '/input history_global_next' } @wee_keys;
	@keys = 'meta2-B' unless @keys;
	weechat::buffer_set($buf, "key_bind_$_", '/window scroll +1') for @keys;

	weechat::buffer_set($buf, 'key_bind_ ', '/window page_down');

	@keys = map { $_->{key} }
		grep { $_->{command} eq '/input delete_previous_char' } @wee_keys;
	@keys = ('ctrl-?', 'ctrl-H') unless @keys;
	weechat::buffer_set($buf, "key_bind_$_", '/window page_up') for @keys;

	weechat::buffer_set($buf, 'key_bind_g', '/window scroll_top');
	weechat::buffer_set($buf, 'key_bind_G', '/window scroll_bottom');

	weechat::buffer_set($buf, 'key_bind_q', '/buffer close');

	weechat::print($buf, " \t".mangle_man_for_wee($_)) # weird bug with \t\t showing nothing?
			for `pod2man \Q$file\E 2>/dev/null | GROFF_NO_SGR=1 nroff -mandoc -rLL=${width}n -rLT=${width}n -Tutf8 2>/dev/null`;
	weechat::command($buf, '/window scroll_top');

	unless (hdh($buf, 'buffer', 'lines', 'lines_count') > 0) {
		weechat::print($buf, weechat::prefix('error').$_)
				for "Unfortunately, your @{[weechat::color('underline')]}nroff".
					"@{[weechat::color('-underline')]} command did not produce".
					" any output.",
					"Working pod2man and nroff commands are required for the ".
					"help viewer to work.",
					"In the meantime, please use the command ", '',
					"\tperldoc $file", '',
					"on your shell instead in order to read the manual.",
					"Thank you and sorry for the inconvenience."
	}
}

1
}

use constant ASPELL_PLANG_PWS => 1;

my %spell_menu;
init_spell_menu();
weechat::hook_config('plugins.var.perl.'.SCRIPT_NAME.'.*', 'default_options', '');
weechat::hook_command_run('/input complete_next', 'spell_menu', '');
weechat::hook_info_hashtable('spell_menu', 'spell menu content', '', 'list of 123.command and 123.name pairs for insertion into menu', 'spell_menu', '');
weechat::hook_command(SCRIPT_NAME, 'open the spell correction menu', '',
					  "use @{[weechat::color('bold')]}/@{[SCRIPT_NAME]} help@{[weechat::color('-bold')]} to read the manual",
					  '', 'spell_menu', '');

## spell_menu -- show the spell menu and fix spellings
## () - command_run or command handler
## $_[1] - buffer or infohash name
## $_[2] - command or arg
sub spell_menu {
	if (ref $_[2]) {
		return \%spell_menu;
	}
	if ($_[2] =~ /^\s*help\s*$/i) {
		Nlib::read_manpage(SCRIPT_FILE, SCRIPT_NAME);
		return weechat::WEECHAT_RC_OK
	}
	return weechat::WEECHAT_RC_OK if $_[2] eq '/input complete_next' && weechat::config_string_to_boolean(weechat::config_get_plugin('no_complete'));
	Encode::_utf8_on(my $sugs = weechat::buffer_get_string($_[1], 'localvar_aspell_suggest'));
	return weechat::WEECHAT_RC_OK unless $sugs;
	my $fix = $1 if $_[2] =~ /^fix (\d+)/;
	my $badword;
	($badword, $sugs) = split ':', $sugs, 2;
	Encode::_utf8_on(my $q = weechat::buffer_get_string($_[1], 'input'));
	my $pos = weechat::buffer_get_integer($_[1], 'input_pos');
	my $rpos = rindex $q, $badword, $pos;
	return weechat::WEECHAT_RC_OK unless $rpos >= 0;
	if ($fix) {
		my $goodword = (split '[,/]', $sugs)[$fix-1];
		(substr $q, $rpos, length $badword) = $goodword;
		weechat::buffer_set($_[1], 'input', $q);
		weechat::buffer_set($_[1], 'input_pos', $rpos + length $goodword);
	}
	else {
		return weechat::WEECHAT_RC_OK unless weechat::config_boolean(weechat::config_get('aspell.check.enabled'));
		return weechat::WEECHAT_RC_OK unless $pos >= $rpos;
		if ($_[2] eq '/input complete_next') {
			my $offset = $rpos + length $badword;
			if (weechat::config_string_to_boolean(weechat::config_get_plugin('complete_near'))) {
				my $ptr = substr $q, $offset;
				$ptr =~ /\b/g;
				return weechat::WEECHAT_RC_OK unless $pos <= $offset + (pos $ptr // length $ptr);
			}
			return weechat::WEECHAT_RC_OK 
				if weechat::config_string_to_boolean(weechat::config_get_plugin('complete_noend'))
					&& $pos == $offset;
		}
		my %r;
		my ($i, $j, $dc) = (0, 0, 0);
		my %seen;
		my @shortcut = (undef, 1..9, 0, 'a'..'z');
		my @dict = split ',', (weechat::config_string(weechat::config_get('aspell.dict.'.weechat::buffer_get_string($_[1], 'full_name'))) || weechat::config_string(weechat::config_get('aspell.check.default_dict')));
		for my $sug (split '([,/])', $sugs) {
			next if $sug eq ',';
			if ($sug eq '/') { # next dict
				++$dc;
				last if $dc >= @dict; # work around bug in weechat
				$r{"${j}9.name"} = "[@{[weechat::color('bold')]}$dict[$dc]@{[weechat::color('-bold')]}]";
				next;
			}
			++$i;
			next if $seen{$sug}++;
			$j = sprintf '%02d', $j + 1;
			last if $j >= @shortcut;
			$r{"$j.command"} = "/@{[SCRIPT_NAME]} fix $i";
			$r{"$j.name"} = "&$shortcut[$j] $sug";
		}
		if (@dict > 1) {
			$dc = 0;
			if (ASPELL_PLANG_PWS) {
				my %plangs;
				@dict = grep { !$plangs{$_}++ } map { /^(\w+?)[_-]/ ? $1 : $_ } @dict;
			}
			for (@dict) {
				$dc = sprintf '%02d', $dc + 1;
				$r{"9$dc.command"} = "/aspell addword $dict[$dc-1] \$0";
				$r{"9$dc.name"} = "ADD($dict[$dc-1]) $badword";
			}
		}
		else {
			$r{'9.command'} = '/aspell addword $0';
			$r{'9.name'} = "ADD $badword";
		}
		%spell_menu = %r;
		weechat::command($_[1], "/menu spell $badword");
	}
	$_[2] =~ /^\// ? weechat::WEECHAT_RC_OK_EAT : weechat::WEECHAT_RC_OK
}

## default_options -- set up default option values on start and when unset
## () - config handler if @_ is set
sub default_options {
	my %defaults = (
		no_complete    => 'off',
		complete_near  => 'off',
		complete_noend => 'off',
	);
	for (keys %defaults) {
		weechat::config_set_plugin($_, $defaults{$_})
			unless weechat::config_is_set_plugin($_);
	}
	weechat::WEECHAT_RC_OK
}

sub init_spell_menu {
	default_options();
	my $sf = SCRIPT_FILE;
	for (Nlib::get_settings_from_pod($sf)) {
		weechat::config_set_desc_plugin($_, Nlib::get_desc_from_pod($sf, $_));
	}
	weechat::command('', '/mute /set menu.var.spell.0.command %#spell_menu% % ');
	weechat::WEECHAT_RC_OK
}