qwandry/qwandry.rb

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#!/usr/bin/env ruby
require 'optparse'
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# Informal Spec:
#
# A User may have multiple Repositories
# A Repositories contains Packages
#
# A User will search for a repository giving a name and optional version
# Each Repository will be scanned for matching Packages
# If only one Package matches, that Package will be opened
# If more than one Package matches, then the user will be prompted to pick one
# While any two Packages share the same name their parent dir is appended
# If no Repository matches, then qwandry will exit with a -404 (repo not found)
#
module Qwandry
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class Repository
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attr_reader :name
def initialize(name, path)
@name = name
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@path = path.chomp('/')
end
def scan(name)
[]
end
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def package(name, paths)
Package.new(name, paths, self)
end
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end
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# Directories look like:
# Repository
# lib-0.1
# lib-0.2
class FlatRepository < Repository
def scan(name)
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results = []
Dir["#{@path}/*"].select do |path|
if File.basename(path).start_with?(name)
results << package(File.basename(path), [path])
end
end
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results
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end
end
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class Package
attr_reader :name
attr_reader :repository
attr_reader :paths
def initialize(name, paths, repository)
@name = name
@repository = repository
@paths = paths
end
end
def launch(package)
`mate #{package.paths.join(' ')}`
end
module_function :launch
end
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if __FILE__ == $0
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load('repositories.rb')
load('~/.qwandry/repositories.rb') if File.exists?('~/.qwandry/repositories.rb')
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opts = OptionParser.new do |opts|
opts.banner = "Usage: qwandry [options] name [version]"
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opts.separator ""
opts.separator "Known Repositories:"
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@repositories.keys.each do |repo_label|
opts.separator " #{repo_label}"
end
end
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opts.parse! ARGV
if ARGV.length != 1
puts opts
exit(-1)
end
name = ARGV.pop
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packages = []
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@repositories.each do |set, repos|
repos.each do |repo|
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packages.concat(repo.scan(name))
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end
end
package = nil
if packages.length == 1
package = packages.first
else
packages.each_with_index do |package, index|
puts "%3d. %s" % [index+1, package.name]
end
print ">> "
index = gets.to_i-1
package = packages[index]
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end
Qwandry.launch package if package
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end