Convert Campfire Transcript

transcript.coffee

#!/usr/bin/env coffee

fs = require 'fs'

log = fs.readFileSync('log.txt', 'utf8')

lines = log.split('\n')

lines = lines.filter (line) -> not /\thas entered the room$/.test(line)
lines = lines.filter (line) -> not /\thas left the room$/.test(line)
lines = lines.map (line, index) ->
  if /\d?\d:\d\d [AP]M/.test(line)
    "_#{line}_"
  else
    tab = line.indexOf '\t'
    if tab > 0
      author = line.substring(0, tab).trim()
      message = line.substring(tab).trim()
      "__#{author}__: #{message}"
    else
      line

fs.writeFileSync('log.md', lines.join('\n'))