21bddc7972
For when the symlink for a tap already exists and points to the thing we are about to symlink. This can happen, mostly because my code has sucked, but since the filesystem can be edited by the user at whim, it's possible then too.
79 lines
2.1 KiB
Ruby
79 lines
2.1 KiB
Ruby
module Homebrew extend self
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def tap
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if ARGV.empty?
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tapd = HOMEBREW_LIBRARY/"Taps"
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tapd.children.each do |tap|
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puts tap.basename.sub('-', '/') if (tap/'.git').directory?
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end if tapd.directory?
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else
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install_tap(*tap_args)
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end
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end
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def install_tap user, repo
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raise "brew install git" unless system "/usr/bin/which -s git"
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tapd = HOMEBREW_LIBRARY/"Taps/#{user}-#{repo}"
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raise "Already tapped!" if tapd.directory?
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abort unless system "git clone https://github.com/#{user}/homebrew-#{repo} #{tapd}"
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files = []
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tapd.find_formula{ |file| files << Pathname.new("#{user}-#{repo}").join(file) }
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tapped = link_tap_formula(files)
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puts "Tapped #{tapped} formula"
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end
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def link_tap_formula formulae
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ignores = (HOMEBREW_LIBRARY/"Formula/.gitignore").read.split rescue []
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tapped = 0
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cd HOMEBREW_LIBRARY/"Formula" do
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formulae.each do |formula|
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from = HOMEBREW_LIBRARY.join("Taps/#{formula}")
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to = HOMEBREW_LIBRARY.join("Formula/#{formula.basename}")
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# Unexpected, but possible, lets proceed as if nothing happened
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to.delete if to.symlink? and to.realpath == from
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# using the system ln is the only way to get relative symlinks
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system "ln -s ../Taps/#{formula} 2>/dev/null"
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if $?.success?
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ignores << formula.basename.to_s
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tapped += 1
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else
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to = to.realpath if to.exist?
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opoo "Could not tap #{Tty.white}#{from.tap_ref}#{Tty.reset} over #{Tty.white}#{to.tap_ref}#{Tty.reset}"
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end
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end
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end
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HOMEBREW_LIBRARY.join("Formula/.gitignore").atomic_write(ignores.uniq.join("\n"))
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tapped
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end
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private
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def tap_args
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ARGV.first =~ %r{^(\w+)/(homebrew-)?(\w+)$}
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raise "Invalid usage" unless $1 and $3
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[$1, $3]
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end
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end
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class Pathname
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def tap_ref
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case self.to_s
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when %r{^#{HOMEBREW_LIBRARY}/Taps/(\w+)-(\w+)/(.+)}
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"#$1/#$2/#{File.basename($3, '.rb')}"
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when %r{^#{HOMEBREW_LIBRARY}/Formula/(.+)}
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"mxcl/master/#{File.basename($1, '.rb')}"
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else
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nil
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end
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end
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end
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