Why and how you should make your own tools, with some examples. Talk for the Nashville Ruby on Rails Meetup

1. MAKE
YOUR OWN
TOOLS
ChristopherCotton.com
@_cotton
2013-03-07
Nashville Ruby on Rails Meetup

2. Why?
Repetition Sucks
Repetition Sucks
Repetition Sucks
Repetition Repetition Sucks
Sucks
Repetition Sucks
Repetition Sucks Text Repetition Sucks
Repetition Sucks
epetition Sucks Repetition Sucks
Repetition Sucks
Repetition Sucks
Repetition Sucks
petition Sucks
Repetition Sucks
Repetition Sucks
Repetition Sucks Repetition

3. Why?
Code Easier than Manual

4. Why?
Transfer
of Knowledge

5. What?
Simple Lines of Ruby
Command Line Tools
Simple Webapps
Apply lots of Regex, Regex, Regex

6. HOW?
DOES IT WORK?

7. NOT PRETTY
HOW?

8. I BUILT WHAT?
HOW?

9. EXAMPLES

10. build.rb
Android Building
OptionParser.new do |o|
o.on('-d', '--deploy [DIR]', 'Deploy to HST, can pass in directory') { |dir|
$deploy_dir = dir || "#{ENV['HOME']}/Hst/Dropbox"
o.on('-r', '--release KEYSTORE', 'Keystore for the relase build') { |key|
$keystore = key }
o.on('-h', 'Print out help') { puts o; exit }
o.parse!
end
ensure_local_properies(File.join(buildtarget_dir, "facebook"), android_sdk_location)
# modify the AndroidManifest.xml
Replacement.file(File.join(buildtarget_dir, "AndroidManifest.xml")) do |rp|
rp.buffer.gsub!(/package="#{package_prefix}.#{old_package}"/, "package=
"#{package_prefix}.#{package}"")
end

11. copy_assets.rb
Image Asset Copying
rsync to copy assets
scale for non-retina versions
create .h/.m Object C for constants
File.open(File.join(root_dir, "Primer", "AssetConstants.h"),'w') do |file|
file.puts "// Do not edit this file, it is auto generated by
#{File.basename(__FILE__)}"
file.puts ""
image_files.each do |image|
file.puts "FOUNDATION_EXPORT NSString *const
kAsset_#{File.basename(image, File.extname(image))};"
end
end

12. Mini Server

13. translation helper
def trans2(eng, language)
File.open("otherresources/#{ARGV[0]}_trans2.txt", "w") do |o|
eng.each_with_index.select do |line, index|
if line =~ /<key>(.+)</key>/
o.puts("")
o.puts("Categoryt#{unquote($1)}")
end
if line =~ /<string>(.+)</string>/
o.print("t#{unquote($1)}")
language[index] =~ /<string>(!?)(.+)</string>/
o.puts("t#{unquote($2)}t#{$1}")
end
end
end
end

14. check_assets.rb
assets = {}
total_dirs = 0
Dir.glob(File.join(dropbox, "*")).each do |root_dir|
! next unless File.directory?(root_dir)
! total_dirs += 1
! dir_name = File.basename(root_dir)
! Dir.glob(File.join(root_dir, "*")).each do |file|
! ! name = File.basename(file)
! ! assets[name] = (assets[name] || []).push(dir_name) ! !
! end!
end
assets.each do |key,value|!
! puts "#{key} = #{value.inspect}" unless total_dirs == value.length
end

15. Image Extraction, Composition
Spaceward Ho!

16. Share Your Tool
Open Source
Can Happen Much Later
Version Control

17. Q &A