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								git-gui/lib/spellcheck.tcl
									
										
									
									
									
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							|  | @ -0,0 +1,415 @@ | |||
| # git-gui spellchecking support through ispell/aspell | ||||
| # Copyright (C) 2008 Shawn Pearce | ||||
| 
 | ||||
| class spellcheck { | ||||
| 
 | ||||
| field s_fd      {} ; # pipe to ispell/aspell | ||||
| field s_version {} ; # ispell/aspell version string | ||||
| field s_lang    {} ; # current language code | ||||
| field s_prog aspell; # are we actually old ispell? | ||||
| field s_failed   0 ; # is $s_prog bogus and not working? | ||||
| 
 | ||||
| field w_text      ; # text widget we are spelling | ||||
| field w_menu      ; # context menu for the widget | ||||
| field s_menuidx 0 ; # last index of insertion into $w_menu | ||||
| 
 | ||||
| field s_i           {} ; # timer registration for _run callbacks | ||||
| field s_clear        0 ; # did we erase misspelled tags yet? | ||||
| field s_seen    [list] ; # lines last seen from $w_text in _run | ||||
| field s_checked [list] ; # lines already checked | ||||
| field s_pending [list] ; # [$line $data] sent to ispell/aspell | ||||
| field s_suggest        ; # array, list of suggestions, keyed by misspelling | ||||
| 
 | ||||
| constructor init {pipe_fd ui_text ui_menu} { | ||||
| 	set w_text $ui_text | ||||
| 	set w_menu $ui_menu | ||||
| 	array unset s_suggest | ||||
| 
 | ||||
| 	bind_button3 $w_text [cb _popup_suggest %X %Y @%x,%y] | ||||
| 	_connect $this $pipe_fd | ||||
| 	return $this | ||||
| } | ||||
| 
 | ||||
| method _connect {pipe_fd} { | ||||
| 	fconfigure $pipe_fd \ | ||||
| 		-encoding utf-8 \ | ||||
| 		-eofchar {} \ | ||||
| 		-translation lf | ||||
| 
 | ||||
| 	if {[gets $pipe_fd s_version] <= 0} { | ||||
| 		if {[catch {close $pipe_fd} err]} { | ||||
| 
 | ||||
| 			# Eh?  Is this actually ispell choking on aspell options? | ||||
| 			# | ||||
| 			if {$s_prog eq {aspell} | ||||
| 				&& [regexp -nocase {^Usage: } $err] | ||||
| 				&& ![catch { | ||||
| 						set pipe_fd [open [list | $s_prog -v] r] | ||||
| 						gets $pipe_fd s_version | ||||
| 						close $pipe_fd | ||||
| 				}] | ||||
| 				&& $s_version ne {}} { | ||||
| 				if {{@(#) } eq [string range $s_version 0 4]} { | ||||
| 					set s_version [string range $s_version 5 end] | ||||
| 				} | ||||
| 				set s_failed 1 | ||||
| 				error_popup [strcat \ | ||||
| 					[mc "Unsupported spell checker"] \ | ||||
| 					":\n\n$s_version"] | ||||
| 				set s_version {} | ||||
| 				return | ||||
| 			} | ||||
| 
 | ||||
| 			regsub -nocase {^Error: } $err {} err | ||||
| 			if {$s_fd eq {}} { | ||||
| 				error_popup [strcat [mc "Spell checking is unavailable"] ":\n\n$err"] | ||||
| 			} else { | ||||
| 				error_popup [strcat \ | ||||
| 					[mc "Invalid spell checking configuration"] \ | ||||
| 					":\n\n$err\n\n" \ | ||||
| 					[mc "Reverting dictionary to %s." $s_lang]] | ||||
| 			} | ||||
| 		} else { | ||||
| 			error_popup [mc "Spell checker silently failed on startup"] | ||||
| 		} | ||||
| 		return | ||||
| 	} | ||||
| 
 | ||||
| 	if {{@(#) } ne [string range $s_version 0 4]} { | ||||
| 		catch {close $pipe_fd} | ||||
| 		error_popup [strcat [mc "Unrecognized spell checker"] ":\n\n$s_version"] | ||||
| 		return | ||||
| 	} | ||||
| 	set s_version [string range [string trim $s_version] 5 end] | ||||
| 	regexp \ | ||||
| 		{International Ispell Version .* \(but really (Aspell .*?)\)$} \ | ||||
| 		$s_version _junk s_version | ||||
| 	regexp {^Aspell (\d)+\.(\d+)} $s_version _junk major minor | ||||
| 
 | ||||
| 	puts $pipe_fd !             ; # enable terse mode | ||||
| 
 | ||||
| 	# fetch the language | ||||
| 	if {$major > 0 || ($major == 0 && $minor >= 60)} { | ||||
| 		puts $pipe_fd {$$cr master} | ||||
| 		flush $pipe_fd | ||||
| 		gets $pipe_fd s_lang | ||||
| 		regexp {[/\\]([^/\\]+)\.[^\.]+$} $s_lang _ s_lang | ||||
| 	} else { | ||||
| 		set s_lang {} | ||||
| 	} | ||||
| 
 | ||||
| 	if {$::default_config(gui.spellingdictionary) eq {} | ||||
| 	 && [get_config gui.spellingdictionary] eq {}} { | ||||
| 		set ::default_config(gui.spellingdictionary) $s_lang | ||||
| 	} | ||||
| 
 | ||||
| 	if {$s_fd ne {}} { | ||||
| 		catch {close $s_fd} | ||||
| 	} | ||||
| 	set s_fd $pipe_fd | ||||
| 
 | ||||
| 	fconfigure $s_fd -blocking 0 | ||||
| 	fileevent $s_fd readable [cb _read] | ||||
| 
 | ||||
| 	$w_text tag conf misspelled \ | ||||
| 		-foreground red \ | ||||
| 		-underline 1 | ||||
| 
 | ||||
| 	array unset s_suggest | ||||
| 	set s_seen    [list] | ||||
| 	set s_checked [list] | ||||
| 	set s_pending [list] | ||||
| 	_run $this | ||||
| } | ||||
| 
 | ||||
| method lang {{n {}}} { | ||||
| 	if {$n ne {} && $s_lang ne $n && !$s_failed} { | ||||
| 		set spell_cmd [list |] | ||||
| 		lappend spell_cmd aspell | ||||
| 		lappend spell_cmd --master=$n | ||||
| 		lappend spell_cmd --mode=none | ||||
| 		lappend spell_cmd --encoding=UTF-8 | ||||
| 		lappend spell_cmd pipe | ||||
| 		_connect $this [open $spell_cmd r+] | ||||
| 	} | ||||
| 	return $s_lang | ||||
| } | ||||
| 
 | ||||
| method version {} { | ||||
| 	if {$s_version ne {}} { | ||||
| 		return "$s_version, $s_lang" | ||||
| 	} | ||||
| 	return {} | ||||
| } | ||||
| 
 | ||||
| method stop {} { | ||||
| 	while {$s_menuidx > 0} { | ||||
| 		$w_menu delete 0 | ||||
| 		incr s_menuidx -1 | ||||
| 	} | ||||
| 	$w_text tag delete misspelled | ||||
| 
 | ||||
| 	catch {close $s_fd} | ||||
| 	catch {after cancel $s_i} | ||||
| 	set s_fd {} | ||||
| 	set s_i {} | ||||
| 	set s_lang {} | ||||
| } | ||||
| 
 | ||||
| method _popup_suggest {X Y pos} { | ||||
| 	while {$s_menuidx > 0} { | ||||
| 		$w_menu delete 0 | ||||
| 		incr s_menuidx -1 | ||||
| 	} | ||||
| 
 | ||||
| 	set b_loc [$w_text index "$pos wordstart"] | ||||
| 	set e_loc [_wordend $this $b_loc] | ||||
| 	set orig  [$w_text get $b_loc $e_loc] | ||||
| 	set tags  [$w_text tag names $b_loc] | ||||
| 
 | ||||
| 	if {[lsearch -exact $tags misspelled] >= 0} { | ||||
| 		if {[info exists s_suggest($orig)]} { | ||||
| 			set cnt 0 | ||||
| 			foreach s $s_suggest($orig) { | ||||
| 				if {$cnt < 5} { | ||||
| 					$w_menu insert $s_menuidx command \ | ||||
| 						-label $s \ | ||||
| 						-command [cb _replace $b_loc $e_loc $s] | ||||
| 					incr s_menuidx | ||||
| 					incr cnt | ||||
| 				} else { | ||||
| 					break | ||||
| 				} | ||||
| 			} | ||||
| 		} else { | ||||
| 			$w_menu insert $s_menuidx command \ | ||||
| 				-label [mc "No Suggestions"] \ | ||||
| 				-state disabled | ||||
| 			incr s_menuidx | ||||
| 		} | ||||
| 		$w_menu insert $s_menuidx separator | ||||
| 		incr s_menuidx | ||||
| 	} | ||||
| 
 | ||||
| 	$w_text mark set saved-insert insert | ||||
| 	tk_popup $w_menu $X $Y | ||||
| } | ||||
| 
 | ||||
| method _replace {b_loc e_loc word} { | ||||
| 	$w_text configure -autoseparators 0 | ||||
| 	$w_text edit separator | ||||
| 
 | ||||
| 	$w_text delete $b_loc $e_loc | ||||
| 	$w_text insert $b_loc $word | ||||
| 
 | ||||
| 	$w_text edit separator | ||||
| 	$w_text configure -autoseparators 1 | ||||
| 	$w_text mark set insert saved-insert | ||||
| } | ||||
| 
 | ||||
| method _restart_timer {} { | ||||
| 	set s_i [after 300 [cb _run]] | ||||
| } | ||||
| 
 | ||||
| proc _match_length {max_line arr_name} { | ||||
| 	upvar $arr_name a | ||||
| 
 | ||||
| 	if {[llength $a] > $max_line} { | ||||
| 		set a [lrange $a 0 $max_line] | ||||
| 	} | ||||
| 	while {[llength $a] <= $max_line} { | ||||
| 		lappend a {} | ||||
| 	} | ||||
| } | ||||
| 
 | ||||
| method _wordend {pos} { | ||||
| 	set pos  [$w_text index "$pos wordend"] | ||||
| 	set tags [$w_text tag names $pos] | ||||
| 	while {[lsearch -exact $tags misspelled] >= 0} { | ||||
| 		set pos  [$w_text index "$pos +1c"] | ||||
| 		set tags [$w_text tag names $pos] | ||||
| 	} | ||||
| 	return $pos | ||||
| } | ||||
| 
 | ||||
| method _run {} { | ||||
| 	set cur_pos  [$w_text index {insert -1c}] | ||||
| 	set cur_line [lindex [split $cur_pos .] 0] | ||||
| 	set max_line [lindex [split [$w_text index end] .] 0] | ||||
| 	_match_length $max_line s_seen | ||||
| 	_match_length $max_line s_checked | ||||
| 
 | ||||
| 	# Nothing in the message buffer?  Nothing to spellcheck. | ||||
| 	# | ||||
| 	if {$cur_line == 1 | ||||
| 	 && $max_line == 2 | ||||
| 	 && [$w_text get 1.0 end] eq "\n"} { | ||||
| 		array unset s_suggest | ||||
| 		_restart_timer $this | ||||
| 		return | ||||
| 	} | ||||
| 
 | ||||
| 	set active 0 | ||||
| 	for {set n 1} {$n <= $max_line} {incr n} { | ||||
| 		set s [$w_text get "$n.0" "$n.end"] | ||||
| 
 | ||||
| 		# Don't spellcheck the current line unless we are at | ||||
| 		# a word boundary.  The user might be typing on it. | ||||
| 		# | ||||
| 		if {$n == $cur_line | ||||
| 		 && ![regexp {^\W$} [$w_text get $cur_pos insert]]} { | ||||
| 
 | ||||
| 			# If the current word is misspelled remove the tag | ||||
| 			# but force a spellcheck later. | ||||
| 			# | ||||
| 			set tags [$w_text tag names $cur_pos] | ||||
| 			if {[lsearch -exact $tags misspelled] >= 0} { | ||||
| 				$w_text tag remove misspelled \ | ||||
| 					"$cur_pos wordstart" \ | ||||
| 					[_wordend $this $cur_pos] | ||||
| 				lset s_seen    $n $s | ||||
| 				lset s_checked $n {} | ||||
| 			} | ||||
| 
 | ||||
| 			continue | ||||
| 		} | ||||
| 
 | ||||
| 		if {[lindex $s_seen    $n] eq $s | ||||
| 		 && [lindex $s_checked $n] ne $s} { | ||||
| 			# Don't send empty lines to Aspell it doesn't check them. | ||||
| 			# | ||||
| 			if {$s eq {}} { | ||||
| 				lset s_checked $n $s | ||||
| 				continue | ||||
| 			} | ||||
| 
 | ||||
| 			# Don't send typical s-b-o lines as the emails are | ||||
| 			# almost always misspelled according to Aspell. | ||||
| 			# | ||||
| 			if {[regexp -nocase {^[a-z-]+-by:.*<.*@.*>$} $s]} { | ||||
| 				$w_text tag remove misspelled "$n.0" "$n.end" | ||||
| 				lset s_checked $n $s | ||||
| 				continue | ||||
| 			} | ||||
| 
 | ||||
| 			puts $s_fd ^$s | ||||
| 			lappend s_pending [list $n $s] | ||||
| 			set active 1 | ||||
| 		} else { | ||||
| 			# Delay until another idle loop to make sure we don't | ||||
| 			# spellcheck lines the user is actively changing. | ||||
| 			# | ||||
| 			lset s_seen $n $s | ||||
| 		} | ||||
| 	} | ||||
| 
 | ||||
| 	if {$active} { | ||||
| 		set s_clear 1 | ||||
| 		flush $s_fd | ||||
| 	} else { | ||||
| 		_restart_timer $this | ||||
| 	} | ||||
| } | ||||
| 
 | ||||
| method _read {} { | ||||
| 	while {[gets $s_fd line] >= 0} { | ||||
| 		set lineno [lindex $s_pending 0 0] | ||||
| 		set line [string trim $line] | ||||
| 
 | ||||
| 		if {$s_clear} { | ||||
| 			$w_text tag remove misspelled "$lineno.0" "$lineno.end" | ||||
| 			set s_clear 0 | ||||
| 		} | ||||
| 
 | ||||
| 		if {$line eq {}} { | ||||
| 			lset s_checked $lineno [lindex $s_pending 0 1] | ||||
| 			set s_pending [lrange $s_pending 1 end] | ||||
| 			set s_clear 1 | ||||
| 			continue | ||||
| 		} | ||||
| 
 | ||||
| 		set sugg [list] | ||||
| 		switch -- [string range $line 0 1] { | ||||
| 		{& } { | ||||
| 			set line [split [string range $line 2 end] :] | ||||
| 			set info [split [lindex $line 0] { }] | ||||
| 			set orig [lindex $info 0] | ||||
| 			set offs [lindex $info 2] | ||||
| 			foreach s [split [lindex $line 1] ,] { | ||||
| 				lappend sugg [string range $s 1 end] | ||||
| 			} | ||||
| 		} | ||||
| 		{# } { | ||||
| 			set info [split [string range $line 2 end] { }] | ||||
| 			set orig [lindex $info 0] | ||||
| 			set offs [lindex $info 1] | ||||
| 		} | ||||
| 		default { | ||||
| 			puts stderr "<spell> $line" | ||||
| 			continue | ||||
| 		} | ||||
| 		} | ||||
| 
 | ||||
| 		incr offs -1 | ||||
| 		set b_loc "$lineno.$offs" | ||||
| 		set e_loc [$w_text index "$lineno.$offs wordend"] | ||||
| 		set curr [$w_text get $b_loc $e_loc] | ||||
| 
 | ||||
| 		# At least for English curr = "bob", orig = "bob's" | ||||
| 		# so Tk didn't include the 's but Aspell did.  We | ||||
| 		# try to round out the word. | ||||
| 		# | ||||
| 		while {$curr ne $orig | ||||
| 		 && [string equal -length [string length $curr] $curr $orig]} { | ||||
| 			set n_loc  [$w_text index "$e_loc +1c"] | ||||
| 			set n_curr [$w_text get $b_loc $n_loc] | ||||
| 			if {$n_curr eq $curr} { | ||||
| 				break | ||||
| 			} | ||||
| 			set curr  $n_curr | ||||
| 			set e_loc $n_loc | ||||
| 		} | ||||
| 
 | ||||
| 		if {$curr eq $orig} { | ||||
| 			$w_text tag add misspelled $b_loc $e_loc | ||||
| 			if {[llength $sugg] > 0} { | ||||
| 				set s_suggest($orig) $sugg | ||||
| 			} else { | ||||
| 				unset -nocomplain s_suggest($orig) | ||||
| 			} | ||||
| 		} else { | ||||
| 			unset -nocomplain s_suggest($orig) | ||||
| 		} | ||||
| 	} | ||||
| 
 | ||||
| 	fconfigure $s_fd -block 1 | ||||
| 	if {[eof $s_fd]} { | ||||
| 		if {![catch {close $s_fd} err]} { | ||||
| 			set err [mc "Unexpected EOF from spell checker"] | ||||
| 		} | ||||
| 		catch {after cancel $s_i} | ||||
| 		$w_text tag remove misspelled 1.0 end | ||||
| 		error_popup [strcat [mc "Spell Checker Failed"] "\n\n" $err] | ||||
| 		return | ||||
| 	} | ||||
| 	fconfigure $s_fd -block 0 | ||||
| 
 | ||||
| 	if {[llength $s_pending] == 0} { | ||||
| 		_restart_timer $this | ||||
| 	} | ||||
| } | ||||
| 
 | ||||
| proc available_langs {} { | ||||
| 	set langs [list] | ||||
| 	catch { | ||||
| 		set fd [open [list | aspell dump dicts] r] | ||||
| 		while {[gets $fd line] >= 0} { | ||||
| 			if {$line eq {}} continue | ||||
| 			lappend langs $line | ||||
| 		} | ||||
| 		close $fd | ||||
| 	} | ||||
| 	return $langs | ||||
| } | ||||
| 
 | ||||
| } | ||||
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