Futzing with BBEdit and maven output.

maven_bberrors.rb

#!/usr/bin/env ruby
# encoding: UTF-8

require 'stringio'
require 'rubygems'
require 'ruby-debug'

lines = []
ARGF.each_line do |ea|
  # strip bash color codes
  lines << ea.gsub(/\x1B\[([0-9]{1,2}(;[0-9]{1,2})?)?[m|K]/, "").chomp
  puts ea
end

class Result < Struct.new(:kind, :file, :line, :message)
  def initialize(string, kind)
    lines = string.split("\n").map { |ea| ea.sub(/\[#{kind}\] /i, "") }
    self.kind = kind
    self.file, self.line, self.message = lines.shift.split(":")
    self.message << lines.join("")
    self.message.gsub!(/"/, "'")
  end

  def result_kind
    case self.kind
    when 'error'
      'error_kind'
    when 'warn'
      'warning_kind'
    else
      'note_kind'
    end
  end

  def for_bbedit
    "{result_kind:#{result_kind}, result_file:\"#{file}\", result_line:#{line}, message:\"#{message}\"}"
  end
end

def group(lines, kind)
  return [] if lines.empty?
  all = []
  output = lines.dup
  current = StringIO.new
  current.puts(output.shift)
  output.each do |ea|
    if ea.match(/^\[#{kind}\] \//i)
      all << current.string
      current = StringIO.new
    end
    current.puts(ea)
  end
  all << current.string
  all
end

errors = lines.grep(/\A\[error\]/i)
warnings = lines.grep(/\A\[warn\]/i)

results = group(errors, "error").map { |ea| Result.new(ea, "error").for_bbedit }
results += group(warnings, "warn").map { |ea| Result.new(ea, "warn").for_bbedit }

debugger

exit if results.empty?

script = "tell application \"BBEdit\"
  set error_list to { ¬
    #{results.join(", ¬\n")}}
  make new results browser with data error_list ¬
    with properties {name:\"Errors\"}
  activate
end tell
"

pipe = IO.popen("osascript -", "w")

pipe.puts(script)
pipe.puts('"Opened BBEdit Browser"')
pipe.close