gulp-eachline.js

gulp-eachline.js

var through = require('through2')

var eachline = function(transform, delim) {
  delim = delim || '\n'
  return through.obj(function(file, _, done) {
    var extra = ''
    file.contents = file.contents.pipe(
      through(function(chunk, _, cb) {
        var data = chunk.toString()
        if (extra) { data = extra + data }
        var lines = data.split(delim)
        extra = lines.splice(lines.length - 1, 1)[0]
        lines.forEach(function(line) {
          if (transform) {
            line = transform(line)
          }
          if (line) { this.push(line) }
        }, this)
        cb()
      }, function(cb) {
        if (extra) { this.push(extra) }
        extra = null
        cb()
      })
    )
    this.push(file)
    done()
  })
}