I have recently become annoyed enough with something about the linux command line experience to take action.
I welcome all comments, but specific things I'd like input on are:
- Is there something already available that does this?
- How would you do the same thing in Perl or Python?
- How would you go about reducing code duplication here? (The file-types hash looks similar enough in both places that it feels like I should be able to abstract it)
- In
unpack, is there a better way of determining file-type? - Can you think of any situations that would cause
packto blow up (and any ways of solving those situations)? Just failing to do anything wouldn't be too bad, but (for example) compressing random other files is something I'd like to avoid.
Take 4:
unpack:
#!/usr/bin/ruby
archive_types = {
"tar" => ["tar", "-xvf"],
"tar.gz" => ["tar", "-zxvf"],
"tgz" => ["tar", "-zxvf"],
"tar.bz2" => ["tar", "-jxvf"],
"rar" => ["unrar", "x"],
"zip" => ["unzip"]
}
ARGV.each do |target|
file_type = target.match(/\.([^\W0-9]{3}?(\.\w+)?)$/)[1]
if archive_types[file_type]
args = archive_types[file_type].push target
system(*args)
else
puts "Dunno how to deal with '#{file_type}' files"
end
end
pack (with added --exclude options for my ease of use):
#!/usr/bin/ruby
require 'optparse'
require 'pp'
require 'fileutils'
archive_types = {
"tar" => ["tar", "-cvf"],
"tar.gz" => ["tar", "-zcvf"],
"tgz" => ["tar", "-zcvf"],
"tar.bz2" => ["tar", "-jcvf"],
"zip" => ["zip"]
}
########## parsing inputs
options = { :type => "tar", :excluded => [".git", ".gitignore", "*~"] }
optparse = OptionParser.new do|opts|
opts.on("-e", "--exclude a,b,c", Array,
"Specify things to ignore. Defaults to [#{options[:excluded].join ", "}]") do |e|
options[:excluded] = e
end
opts.on("-t", "--type FILE-TYPE",
"Specify archive type to make. Defaults to '#{options[:type]}'. Supported types: #{archive_types.keys.join ", "}") do |t|
options[:type] = t
end
end
optparse.parse!
##########
ARGV.each do |target|
if not archive_types[options[:type]]
puts "Supported types are #{archive_types.keys.join ", "}"
exit
elsif options[:type] == "zip"
exclude = options[:excluded].map{|d| ["-x", d]}.flatten
else
exclude = options[:excluded].map{|d| ["--exclude", d]}.flatten
end
args = archive_types[options[:type]] +
[target + "." + options[:type], target] +
exclude
system(*args)
end
