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@@ -1,44 +1,49 @@
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child_process = require("child_process")
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+logger = require 'logger-sharelatex'
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BATCH_SIZE = 100
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class ASpellWorker
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constructor: (language) ->
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@language = language
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+ @count = 0
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@pipe = child_process.spawn("aspell", ["pipe", "-t", "--encoding=utf-8", "-d", language])
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+ logger.log process: @pipe.pid, lang: @language, "starting new aspell worker"
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@pipe.on 'exit', () =>
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@state = 'killed'
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+ logger.log process: @pipe.pid, lang: @language, "aspell worker has exited"
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@pipe.on 'error', (err) =>
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+ @state = 'error'
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@callback err, []
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@pipe.stdin.on 'error', (err) =>
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+ @state = 'error'
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@callback err, []
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output = ""
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@pipe.stdout.on "data", (chunk) =>
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- # TODO: strip aspell header
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output = output + chunk
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+ # We receive a single "*" from Aspell as the end of data marker
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if chunk.toString().match(/^\*$/m)
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@callback(null, output.slice())
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+ @state = 'ready'
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output = ""
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error = ""
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- @state = 'ready'
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error = ""
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@pipe.stderr.on "data", (chunk) =>
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error = error + chunk
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@pipe.stdout.on "end", () =>
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- # process has ended, remove it from the active list
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- if error == ""
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- @callback(null, output.slice())
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- else
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- @callback new Error(error), output.slice()
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+ # process has ended
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+ @state = "end"
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isReady: () ->
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return @state == 'ready'
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check: (words, callback) ->
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- @state = 'ready'
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+ # we will now send data to aspell, and be ready again when we
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+ # receive the end of data marker
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+ @state = 'busy'
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@callback = callback
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@setTerseMode()
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@write(words)
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@@ -53,12 +58,14 @@ class ASpellWorker
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i += BATCH_SIZE
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flush: () ->
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- # send an end of data marker
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- @sendCommand("%") # take the aspell pipe out of terse mode so we can look for a '*'
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- @sendCommand("end") # this is a valid word so it will generate a '*'
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- @sendCommand("!") # go back into terse mode
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+ # get aspell to send an end of data marker "*" when ready
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+ @sendCommand("%") # take the aspell pipe out of terse mode so we can look for a '*'
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+ @sendCommand("end") # send a valid word ("end") so it will generate a '*'
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+ @sendCommand("!") # go back into terse mode
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- shutdown: () ->
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+ shutdown: (reason) ->
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+ logger.log process: @pipe.pid, reason: reason, 'shutting down'
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+ @state = "closing"
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@pipe.stdin.end()
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setTerseMode: () ->
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@@ -72,6 +79,7 @@ class ASpellWorker
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# ^word1 word2 word3 ...
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# See aspell.info, writing programs to use Aspell Through A Pipe
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@sendCommand("^" + words.join(" "))
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+ @count++
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sendCommand: (command) ->
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@pipe.stdin.write(command + "\n")
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Brian