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###
Jitter, a CoffeeScript compilation utility
The latest version and documentation, can be found at:
http://github.com/TrevorBurnham/Jitter
Copyright (c) 2010 Trevor Burnham
http://iterative.ly
Based on command.coffee by Jeremy Ashkenas
http://jashkenas.github.com/coffee-script/documentation/docs/command.html
Growl notification code contributed by Andrey Tarantsov
http://www.tarantsov.com/
Permission is hereby granted, free of charge, to any person
obtaining a copy of this software and associated documentation
files (the "Software"), to deal in the Software without
restriction, including without limitation the rights to use,
copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the
Software is furnished to do so, subject to the following
conditions:
The above copyright notice and this permission notice shall be
included in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
OTHER DEALINGS IN THE SOFTWARE.
###
# External dependencies
fs= require 'fs'
path= require 'path'
optparse= require './optparse'
CoffeeScript= require './coffee-script'
{spawn, exec}= require('child_process')
# Banner shown if jitter is run without arguments
BANNER= '''
Jitter takes a directory of *.coffee files and recursively compiles
them to *.js files, preserving the original directory structure.
Jitter also watches for changes and automatically recompiles as
needed. It even detects new files, unlike the coffee utility.
Usage:
jitter coffee-path js-path
'''
# Globals
options= {}
baseSource= ''
baseTarget= ''
optionParser= null
isWatched= {}
exports.run= ->
parseOptions()
return usage() unless baseTarget
compileScripts()
compileScripts= ->
path.exists baseSource, (exists) ->
unless exists
die "Source directory '#{baseSource}' does not exist."
else unless fs.statSync(baseSource).isDirectory()
die "Source '#{baseSource}' is a file; Jitter needs a directory."
path.exists baseTarget, (exists) ->
unless exists
die "Target directory '#{baseTarget}' does not exist."
else unless fs.statSync(baseTarget).isDirectory()
die "Target '#{baseTarget}' is a file; Jitter needs a directory."
compile= (source, target) ->
changed= false
for item in fs.readdirSync source
sourcePath= "#{source}/#{item}"
continue if isWatched[sourcePath]
if path.extname(sourcePath) is '.coffee'
readScript sourcePath
else if fs.statSync(sourcePath).isDirectory()
compile sourcePath
rootCompile= ->
compile(baseSource, baseTarget)
rootCompile()
puts 'Watching for changes and new files. Press Ctrl+C to stop.'
setInterval rootCompile, 500
readScript= (source) ->
fs.readFile source, (err, code) -> compileScript(source, code.toString())
puts 'Compiled '+ source
watchScript(source)
watchScript= (source) ->
isWatched[source] = true
fs.watchFile source, {persistent: true, interval: 250}, (curr, prev) ->
return if curr.mtime.getTime() is prev.mtime.getTime()
fs.readFile source, (err, code) -> compileScript(source, code.toString())
puts 'Recompiled '+ source
compileScript= (source, code) ->
try
js= CoffeeScript.compile code, {source}
writeJS source, js
catch err
puts err.message
notifyGrowl source, err
writeJS= (source, js) ->
filename= path.basename(source, path.extname(source)) + '.js'
dir= baseTarget + path.dirname(source).substring(baseSource.length)
jsPath= path.join dir, filename
exec "mkdir -p #{dir}", (error, stdout, stderr) -> fs.writeFile(jsPath, js)
notifyGrowl= (source, err) ->
basename= source.replace(/^.*[\/\\]/, '')
if m= err.message.match /Parse error on line (\d+)/
message= "Parse error in #{basename}\non line #{m[1]}."
else
message= "Error when compiling #{basename}."
args= ['growlnotify', '-n', 'CoffeeScript', '-p', '2', '-t', "\"Compilation failed\"", '-m', "\"#{message}\""]
exec args.join(' ')
parseOptions= ->
optionParser= new optparse.OptionParser [], BANNER
options= optionParser.parse process.argv
baseSource= options.arguments[2]
if baseSource[-1] is '/' then baseSource = baseSource[0...-1]
baseTarget= options.arguments[3]
if baseTarget[-1] is '/' then baseTarget = baseTarget[0...-1]
usage= ->
puts optionParser.help()
process.exit 0
die= (message) ->
puts message
process.exit 1