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101 lines
2.6 KiB
CoffeeScript
101 lines
2.6 KiB
CoffeeScript
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child_process = require("child_process")
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async = require "async"
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_ = require "underscore"
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class ASpellRunner
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checkWords: (language, words, callback = (error, result) ->) ->
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@runAspellOnWords language, words, (error, output) =>
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return callback(error) if error?
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output = @removeAspellHeader(output)
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suggestions = @getSuggestions(output)
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results = []
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for word, i in words
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if suggestions[word]?
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results.push index: i, suggestions: suggestions[word]
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callback null, results
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getSuggestions: (output) ->
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lines = output.split("\n")
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suggestions = {}
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for line in lines
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if line[0] == "&" # Suggestions found
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parts = line.split(" ")
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if parts.length > 1
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word = parts[1]
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suggestionsString = line.slice(line.indexOf(":") + 2)
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suggestions[word] = suggestionsString.split(", ")
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else if line[0] == "#" # No suggestions
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parts = line.split(" ")
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if parts.length > 1
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word = parts[1]
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suggestions[word] = []
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return suggestions
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removeAspellHeader: (output) -> output.slice(1)
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runAspellOnWords: (language, words, callback = (error, output) ->) ->
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@open(language)
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@captureOutput(callback)
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@setTerseMode()
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start = new Date()
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i = 0
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do tick = () =>
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if new Date() - start > ASpell.ASPELL_TIMEOUT
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@close(true)
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else if i < words.length
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word = words[i]
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@sendWord(word)
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i++
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process.nextTick tick
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else
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@close()
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captureOutput: (callback = (error, output) ->) ->
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output = ""
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error = ""
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@aspell.stdout.on "data", (chunk) ->
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output = output + chunk
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@aspell.stderr.on "data", (chunk) =>
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error = error + chunk
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@aspell.stdout.on "end", () ->
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if error == ""
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callback null, output
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else
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callback new Error(error), output
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open: (language) ->
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@finished = false
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@aspell = child_process.spawn("aspell", ["pipe", "-t", "--encoding=utf-8", "-d", language])
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close: (force) ->
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@finished = true
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@aspell.stdin.end()
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if force && !@aspell.exitCode?
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@aspell.kill("SIGKILL")
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setTerseMode: () ->
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@sendCommand("!")
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sendWord: (word) ->
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@sendCommand("^" + word)
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sendCommand: (command) ->
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@aspell.stdin.write(command + "\n")
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module.exports = ASpell =
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# The description of how to call aspell from another program can be found here:
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# http://aspell.net/man-html/Through-A-Pipe.html
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checkWords: (language, words, callback = (error, result) ->) ->
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runner = new ASpellRunner()
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callback = _.once callback
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runner.checkWords language, words, callback
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forceClose = ->
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runner.close(true)
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callback("process killed")
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setTimeout forceClose, @ASPELL_TIMEOUT
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ASPELL_TIMEOUT : 4000
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