1 # git-gui spellchecking support through ispell/aspell
2 # Copyright (C) 2008 Shawn Pearce
6 field s_fd {} ; # pipe to ispell/aspell
7 field s_version {} ; # ispell/aspell version string
8 field s_lang {} ; # current language code
9 field s_prog aspell; # are we actually old ispell?
10 field s_failed 0 ; # is $s_prog bogus and not working?
12 field w_text ; # text widget we are spelling
13 field w_menu ; # context menu for the widget
14 field s_menuidx 0 ; # last index of insertion into $w_menu
16 field s_i {} ; # timer registration for _run callbacks
17 field s_clear 0 ; # did we erase mispelled tags yet?
18 field s_seen [list] ; # lines last seen from $w_text in _run
19 field s_checked [list] ; # lines already checked
20 field s_pending [list] ; # [$line $data] sent to ispell/aspell
21 field s_suggest ; # array, list of suggestions, keyed by misspelling
23 constructor init {pipe_fd ui_text ui_menu} {
28 bind_button3 $w_text [cb _popup_suggest %X %Y @%x,%y]
29 _connect $this $pipe_fd
33 method _connect {pipe_fd} {
39 if {[gets $pipe_fd s_version] <= 0} {
40 if {[catch {close $pipe_fd} err]} {
42 # Eh? Is this actually ispell choking on aspell options?
44 if {$s_prog eq {aspell}
45 && [regexp -nocase {^Usage: } $err]
47 set pipe_fd [open [list | $s_prog -v] r]
48 gets $pipe_fd s_version
51 && $s_version ne {}} {
52 if {{@(#) } eq [string range $s_version 0 4]} {
53 set s_version [string range $s_version 5 end]
57 [mc "Unsupported spell checker"] \
63 regsub -nocase {^Error: } $err {} err
65 error_popup [strcat [mc "Spell checking is unavailable"] ":\n\n$err"]
68 [mc "Invalid spell checking configuration"] \
70 [mc "Reverting dictionary to %s." $s_lang]]
73 error_popup [mc "Spell checker silently failed on startup"]
78 if {{@(#) } ne [string range $s_version 0 4]} {
79 catch {close $pipe_fd}
80 error_popup [strcat [mc "Unrecognized spell checker"] ":\n\n$s_version"]
83 set s_version [string range $s_version 5 end]
85 {International Ispell Version .* \(but really (Aspell .*?)\)$} \
86 $s_version _junk s_version
88 puts $pipe_fd ! ; # enable terse mode
89 puts $pipe_fd {$$cr master} ; # fetch the language
93 regexp {[/\\]([^/\\]+)\.[^\.]+$} $s_lang _ s_lang
95 if {$::default_config(gui.spellingdictionary) eq {}
96 && [get_config gui.spellingdictionary] eq {}} {
97 set ::default_config(gui.spellingdictionary) $s_lang
105 fconfigure $s_fd -blocking 0
106 fileevent $s_fd readable [cb _read]
108 $w_text tag conf misspelled \
112 array unset s_suggest
119 method lang {{n {}}} {
120 if {$n ne {} && $s_lang ne $n && !$s_failed} {
121 set spell_cmd [list |]
122 lappend spell_cmd aspell
123 lappend spell_cmd --master=$n
124 lappend spell_cmd --mode=none
125 lappend spell_cmd --encoding=UTF-8
126 lappend spell_cmd pipe
127 _connect $this [open $spell_cmd r+]
133 if {$s_version ne {}} {
134 return "$s_version, $s_lang"
140 while {$s_menuidx > 0} {
144 $w_text tag delete misspelled
147 catch {after cancel $s_i}
153 method _popup_suggest {X Y pos} {
154 while {$s_menuidx > 0} {
159 set b_loc [$w_text index "$pos wordstart"]
160 set e_loc [_wordend $this $b_loc]
161 set orig [$w_text get $b_loc $e_loc]
162 set tags [$w_text tag names $b_loc]
164 if {[lsearch -exact $tags misspelled] >= 0} {
165 if {[info exists s_suggest($orig)]} {
167 foreach s $s_suggest($orig) {
169 $w_menu insert $s_menuidx command \
171 -command [cb _replace $b_loc $e_loc $s]
179 $w_menu insert $s_menuidx command \
180 -label [mc "No Suggestions"] \
184 $w_menu insert $s_menuidx separator
188 $w_text mark set saved-insert insert
189 tk_popup $w_menu $X $Y
192 method _replace {b_loc e_loc word} {
193 $w_text configure -autoseparators 0
194 $w_text edit separator
196 $w_text delete $b_loc $e_loc
197 $w_text insert $b_loc $word
199 $w_text edit separator
200 $w_text configure -autoseparators 1
201 $w_text mark set insert saved-insert
204 method _restart_timer {} {
205 set s_i [after 300 [cb _run]]
208 proc _match_length {max_line arr_name} {
211 if {[llength $a] > $max_line} {
212 set a [lrange $a 0 $max_line]
214 while {[llength $a] <= $max_line} {
219 method _wordend {pos} {
220 set pos [$w_text index "$pos wordend"]
221 set tags [$w_text tag names $pos]
222 while {[lsearch -exact $tags misspelled] >= 0} {
223 set pos [$w_text index "$pos +1c"]
224 set tags [$w_text tag names $pos]
230 set cur_pos [$w_text index {insert -1c}]
231 set cur_line [lindex [split $cur_pos .] 0]
232 set max_line [lindex [split [$w_text index end] .] 0]
233 _match_length $max_line s_seen
234 _match_length $max_line s_checked
236 # Nothing in the message buffer? Nothing to spellcheck.
240 && [$w_text get 1.0 end] eq "\n"} {
241 array unset s_suggest
247 for {set n 1} {$n <= $max_line} {incr n} {
248 set s [$w_text get "$n.0" "$n.end"]
250 # Don't spellcheck the current line unless we are at
251 # a word boundary. The user might be typing on it.
254 && ![regexp {^\W$} [$w_text get $cur_pos insert]]} {
256 # If the current word is mispelled remove the tag
257 # but force a spellcheck later.
259 set tags [$w_text tag names $cur_pos]
260 if {[lsearch -exact $tags misspelled] >= 0} {
261 $w_text tag remove misspelled \
262 "$cur_pos wordstart" \
263 [_wordend $this $cur_pos]
271 if {[lindex $s_seen $n] eq $s
272 && [lindex $s_checked $n] ne $s} {
273 # Don't send empty lines to Aspell it doesn't check them.
280 # Don't send typical s-b-o lines as the emails are
281 # almost always misspelled according to Aspell.
283 if {[regexp -nocase {^[a-z-]+-by:.*<.*@.*>$} $s]} {
284 $w_text tag remove misspelled "$n.0" "$n.end"
290 lappend s_pending [list $n $s]
293 # Delay until another idle loop to make sure we don't
294 # spellcheck lines the user is actively changing.
309 while {[gets $s_fd line] >= 0} {
310 set lineno [lindex $s_pending 0 0]
313 $w_text tag remove misspelled "$lineno.0" "$lineno.end"
318 lset s_checked $lineno [lindex $s_pending 0 1]
319 set s_pending [lrange $s_pending 1 end]
325 switch -- [string range $line 0 1] {
327 set line [split [string range $line 2 end] :]
328 set info [split [lindex $line 0] { }]
329 set orig [lindex $info 0]
330 set offs [lindex $info 2]
331 foreach s [split [lindex $line 1] ,] {
332 lappend sugg [string range $s 1 end]
336 set info [split [string range $line 2 end] { }]
337 set orig [lindex $info 0]
338 set offs [lindex $info 1]
341 puts stderr "<spell> $line"
347 set b_loc "$lineno.$offs"
348 set e_loc [$w_text index "$lineno.$offs wordend"]
349 set curr [$w_text get $b_loc $e_loc]
351 # At least for English curr = "bob", orig = "bob's"
352 # so Tk didn't include the 's but Aspell did. We
353 # try to round out the word.
355 while {$curr ne $orig
356 && [string equal -length [string length $curr] $curr $orig]} {
357 set n_loc [$w_text index "$e_loc +1c"]
358 set n_curr [$w_text get $b_loc $n_loc]
359 if {$n_curr eq $curr} {
366 if {$curr eq $orig} {
367 $w_text tag add misspelled $b_loc $e_loc
368 if {[llength $sugg] > 0} {
369 set s_suggest($orig) $sugg
371 unset -nocomplain s_suggest($orig)
374 unset -nocomplain s_suggest($orig)
378 fconfigure $s_fd -block 1
380 if {![catch {close $s_fd} err]} {
381 set err [mc "Unexpected EOF from spell checker"]
383 catch {after cancel $s_i}
384 $w_text tag remove misspelled 1.0 end
385 error_popup [strcat [mc "Spell Checker Failed"] "\n\n" $err]
388 fconfigure $s_fd -block 0
390 if {[llength $s_pending] == 0} {
395 proc available_langs {} {
398 set fd [open [list | aspell dump dicts] r]
399 while {[gets $fd line] >= 0} {
400 if {$line eq {}} continue