checkForModifiedImports.coffee

# grunt-newer: 
# Check for newer @import .less files example
# See: https://github.com/tschaub/grunt-newer/issues/29
# CoffeeScript version of @cgmartin https://gist.github.com/cgmartin/10328349
checkForModifiedImports = (details, action) ->

    lessFile = details.path
    mTime = details.time

    fs.readFile lessFile, "utf8", (err, data) ->
        lessDir = path.dirname lessFile
        regex = /@import "(.+?)(\.less)?";/g
        shouldInclude = false
        match

        while (match = regex.exec(data)) isnt null
            importFile = "#{lessDir}/#{match[1]}.less"

            if fs.existsSync importFile
                stat = fs.statSync importFile

                if stat.mtime > mTime
                    shouldInclude = true
                    break

        action shouldInclude