pkgcl

#!/usr/bin/env ruby

# Author: Alex Brown
# email: code@alexpbrown.me
# license: WTFPL

require 'nokogiri'
require 'open-uri'
require 'optparse'

VERSION = "0.2.1"
@options = {}
@options[:commits] = 1
@options[:show_git_svn] = false
@options[:testing_repo] = false

opts = OptionParser.new do |opts|
  opts.banner = "Usage: pkgcl [options] <packages>"
  opts.separator ""
  opts.on("-c", "--commits=NUM", Integer, "Show NUM commit messages") do |n|
    @options[:commits] = n
  end
  opts.on("--show-git-svn-id", "Show git-svn-id messages") do
    @options[:show_git_svn] = true
  end
  opts.on("--enable-testing", "Show commits relevant to packages in [testing]") do
    @options[:testing_repo] = true
  end
  opts.on("-v", "--version", "Show version information") do
    puts VERSION
    exit
  end
  opts.on_tail("-h", "--help", "Show this message") do
    puts opts
    exit
  end
end
opts.parse!(ARGV)

# check for stdin and get package list accordingly
# I even decided to be nice and parse both 'pacman -Qu' and 'pacman -Qqu' on stdin
packages = []
if STDIN.tty? == false
  ARGF.lines do |line|
    packages << {:name => line.strip!.split(" ")[0]}
  end
else
  ARGV.each {|a| packages << {:name => a} }
end

puts opts if packages.empty?

def colorize(text, color_code)
  "\e[#{color_code}m#{text}\e[0m"
end

def get_pkg(pkg)
  repo, arch = "", ""
  IO.popen([{"LC_ALL"=>"C"}, "pacman", "-Si", pkg[:name], :err => :close]) do |io|
    io.lines do |line|
      case line
      when /^Repository(\s?)*: (.+)$/
        pkg[:repo] = $2
      when /^Architecture(\s?)*: (.+)$/
        pkg[:arch] = $2
      when /^Build Date(\s?)*: (.+)$/
        build_date = Time.parse($2)
        if build_date.strftime("%F") == Time.now.strftime("%F")
          build_date = Time.now
        end
        pkg[:build_date] = build_date
      end
    end
  end
end

def get_pkg_info(pkg)
  # I need to get the correct git url from here, since some packages use a
  # different tracking repo (e.g. linux-headers => linux)
  # I'm also getting the last updated date from this url
  uri = "http://www.archlinux.org/packages/#{pkg[:repo]}/#{pkg[:arch]}/#{pkg[:name]}"
  doc = Nokogiri::HTML(open(uri))

  pkg[:git_url] = doc.css("div#actionlist ul li a")[1]['href']
end

def age_test(commit_age, pkg)
  case commit_age
  when /days/
    git_time = Time.now - commit_age.to_i*60*60*24
  when /hours/
    git_time = Time.now - commit_age.to_i*60*60
  when /min/
    git_time = Time.now - commit_age.to_i*60
  else
    git_time = Time.parse(commit_age)
  end

  if git_time > pkg[:build_date] then
    return false
  else
    return true
  end
end

def get_commits(pkg)
  pkg[:commits] = []

  doc = Nokogiri::HTML(open("#{pkg[:git_url]}&showmsg=1"))
  table = doc.css("table.list.nowrap")
  table.css("td.logsubject").each_with_index do |n,i|
    age = n.parent.children[0].content
    if @options[:testing_repo] == false then
      next if age_test(age, pkg) == false
    end
    commit = {}
    age+=" ago" if /(days|hours|min)/ === age
    commit[:age] = age
    commit[:subject] = n.content
    content = table.css("td.logmsg")[i].content
    content.gsub!(/^git-svn-id.*$/, "") unless @options[:show_git_svn] == true
    content.strip!
    commit[:msg] = content.empty? ? "None" : content
    pkg[:commits] << commit
  end
end

def show_output(pkg)
  # Format and print the result
  print "["+colorize(pkg[:name], 31)+"]"
  if pkg[:commits].count < @options[:commits]
    print colorize(" (Only #{pkg[:commits].count} commits)\n", 33)
  else
    print "\n"
  end

  output = 0
  pkg[:commits].each do |p|
    break if output == @options[:commits]
    puts colorize(p[:subject], 4)
    print colorize("Age: ", 37)
    print colorize(p[:age], 36)+" - "
    puts colorize(p[:msg], 32)
    puts
    output +=1
  end
end

packages.each do |p|
  get_pkg(p)
  if p.has_key?(:arch) == false && p.has_key?(:repo) == false
    puts "["+colorize(p[:name], 31)+"]"
    puts "Not Found"
    puts
    next
  end
  get_pkg_info(p)
  get_commits(p)
  show_output(p)
end