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"use strict";
require! {
through2
livescript
path: Path
"gulp-util": gutil
"vinyl-sourcemaps-apply": applySourceMap
}
module.exports = (options) ->
through2.obj(
new VinylLSConverter(options || {}).transformFn
)
/* jshint -W004 */
/* jshint -W014 */
/* jshint -W030 */
/* jshint -W033 */
/* jshint -W116 */
class VinylLSConverter
(@options) ->
@isJson = delete options.json
transformFn: !(file, enc, done) ~>
[error, clonedFile] = @_convert(file)
error = new gutil.PluginError "gulp-livescript", error if error
done(error, clonedFile)
_convert: (file) ->
if file.isNull!
[null, file]
else if file.isStream!
["Streaming not supported", null]
else
@_tryConvertToJS(file.clone!)
_tryConvertToJS: (clonedFile) ->
try
json = @_convertFilepath(clonedFile)
input = clonedFile.contents.toString("utf8")
options = {} <<< @options
options.bare ||= json
tokens = livescript.tokens(input, raw: options.lex)
ast = livescript.ast(tokens)
ast.make-return! if json
clonedFilename = clonedFile.relative
filename = clonedFilename.replace /js$/, 'ls'
output = ast.compile-root options
if json
result = livescript.run(output.toString!, options, true)
output = JSON.stringify(result, null, 2) + "\n"
clonedFile.contents = new Buffer output.toString!
else
output.setFile filename
output = output.toStringWithSourceMap!
if clonedFile.source-map
output.map._file = clonedFilename
applySourceMap clonedFile, output.map.toString!
clonedFile.contents = new Buffer output.code
catch error
error.message += "\nat " + clonedFile.path
clonedFile = null
[error, clonedFile]
_convertFilepath: (clonedFile) ->
dirname = Path.dirname(clonedFile.path)
filename = Path.basename(clonedFile.path, ".ls")
json = @isJson or ".json" is Path.extname(filename)
newFilename = if json then Path.basename(filename, ".json") + ".json" else filename + ".js"
clonedFile.path = Path.join(dirname, newFilename)
json