50 lines
1.5 KiB
CoffeeScript
50 lines
1.5 KiB
CoffeeScript
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child_process = require 'child_process'
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create_pipes = require './lib/create-pipes'
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proxy = require './lib/proxy'
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read_pipes = require './lib/read-pipes'
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timeout = require './lib/timeout'
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# Blocking exec
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#
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# @param cmd String command to execute
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# @param max_wait Number millisecond timeout value
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# @param options Object execution options (like: encoding)
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#
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# @return Object {String stderr, String stdout, Number status}
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module.exports = (cmd, max_wait, options) ->
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if max_wait and typeof max_wait is 'object'
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[options, max_wait] = [max_wait, null]
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options ?= {}
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unless options.hasOwnProperty 'encoding'
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options.encoding = 'utf8'
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unless typeof options is 'object' and options
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throw new Error 'options must be an object'
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max_wait ?= options.timeout or options.max_wait or 3600000 # 1hr default
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unless not max_wait? or max_wait >= 1
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throw new Error '`options.timeout` must be >=1 millisecond'
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delete options.max_wait
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# use native child_process.execSync if available (from node v0.12+)
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if options.forceEmulation
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delete options.forceEmulation
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else if child_process.execSync
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return proxy cmd, max_wait, options
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delete options.timeout
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dir = create_pipes()
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cmd = '((((' + cmd + ' > ' + dir + '/stdout 2> ' + dir + '/stderr ) ' +
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'&& echo $? > ' + dir + '/status) || echo $? > ' + dir + '/status) &&' +
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' echo 1 > ' + dir + '/done) || echo 1 > ' + dir + '/done'
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child_process.exec cmd, options, ->
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read_pipes dir, max_wait
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