advent-of-code

Entries to advent of code, multiple years
git clone git://git.finwo.net/misc/advent-of-code
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line-for-line.js (667B)

      1 const through      = require('through2');
      2 const multipipe    = require('multipipe');
      3 const characterize = require('./char-for-char');
      4 const normalize    = require('./normalize-newlines.js');
      5 
      6 module.exports = () =>
      7   multipipe(
      8     characterize(),
      9     normalize(),
     10     through.obj(function(chunk, enc, cb) {
     11       if (!this.buf) this.buf = Buffer.alloc(0);
     12       if (chunk.toString() == '\n') {
     13         this.push(this.buf);
     14         this.buf = Buffer.alloc(0);
     15         return cb();
     16       }
     17       const buf = Buffer.alloc(this.buf.length + chunk.length);
     18       this.buf.copy(buf, 0);
     19       chunk.copy(buf, this.buf.length);
     20       this.buf = buf;
     21       cb();
     22     })
     23   )