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981dba1b35
Added a utility method to get an array of architecture names for a given executable. This will be useful for, say, figuring out what Python was compiled for, to know what to compile a C-based module as. Signed Off By: Max Howell <max@methylblue.com> I added a test and made the function use `which` if the path provided is not absolute. I considered allowing relative paths, but then it is possible for the function to take eg. the svn binary from the current directory when you meant the one in the path, and that could be a confusing bug.
123 lines
4.0 KiB
Ruby
123 lines
4.0 KiB
Ruby
# Copyright 2009 Max Howell and other contributors.
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions
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# are met:
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#
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# 1. Redistributions of source code must retain the above copyright
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# notice, this list of conditions and the following disclaimer.
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# 2. Redistributions in binary form must reproduce the above copyright
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# notice, this list of conditions and the following disclaimer in the
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# documentation and/or other materials provided with the distribution.
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#
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# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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# OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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# IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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# NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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# args are additional inputs to puts until a nil arg is encountered
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def ohai title, *args
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return if args.length > 0 and args[0].nil?
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n=`tput cols`.strip.to_i-4
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n=title.length if ARGV.verbose?
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puts "\033[0;34m==>\033[0;0;1m #{title[0,n]}\033[0;0m"
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args.each do |arg|
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return if arg.nil?
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puts arg
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end
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end
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# shows a warning in delicious pink
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def opoo warning
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puts "\033[1;35m==>\033[0;0;1m Warning!\033[0;0m #{warning}"
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end
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def onoe error
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puts "\033[1;31m==>\033[0;0;1m Error\033[0;0m: #{error}"
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end
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def pretty_duration s
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return "2 seconds" if s < 3 # avoids the plural problem ;)
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return "#{s.to_i} seconds" if s < 120
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return "%.1f minutes" % (s/60)
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end
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def interactive_shell
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pid=fork
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if pid.nil?
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# TODO make the PS1 var change pls
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#brown="\[\033[0;33m\]"
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#reset="\[\033[0m\]"
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#ENV['PS1']="Homebrew-#{HOMEBREW_VERSION} #{brown}\W#{reset}\$ "
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exec ENV['SHELL']
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end
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Process.wait pid
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raise SystemExit, "Aborting due to non-zero exit status" if $? != 0
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end
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# Kernel.system but with exceptions
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def safe_system cmd, *args
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puts "#{cmd} #{args*' '}" if ARGV.verbose?
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exec_success=Kernel.system cmd, *args
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# some tools, eg. tar seem to confuse ruby and it doesn't propogate the
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# CTRL-C interrupt to us too, so execution continues, but the exit code os
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# still 2 so we raise our own interrupt
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raise Interrupt, cmd if $?.termsig == 2
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unless exec_success and $?.success?
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puts "Exit code: #{$?}"
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raise ExecutionError.new(cmd, args)
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end
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end
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def curl url, *args
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safe_system 'curl', '-f#LA', HOMEBREW_USER_AGENT, url, *args
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end
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def puts_columns items, cols = 4
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items = items.join("\n") if items.is_a?(Array)
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width=`stty size`.chomp.split(" ").last
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IO.popen("pr -#{cols} -t", "w"){|io| io.write(items) }
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end
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def exec_editor *args
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editor=ENV['EDITOR']
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if editor.nil?
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if system "which -s mate" and $?.success?
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editor='mate'
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else
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editor='vim'
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end
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end
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# we split the editor because especially on mac "mate -w" is common
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# but we still want to use the comma-delimited version of exec because then
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# we don't have to escape args, and escaping 100% is tricky
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exec *(editor.split+args)
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end
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# provide an absolute path to a command or this function will search the PATH
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def arch_for_command cmd
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archs = []
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cmd = `which #{cmd}` if not Pathname.new(cmd).absolute?
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IO.popen("file #{cmd}").readlines.each do |line|
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case line
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when /Mach-O executable ppc/
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archs << :ppc7400
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when /Mach-O 64-bit executable ppc64/
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archs << :ppc64
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when /Mach-O executable i386/
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archs << :i386
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when /Mach-O 64-bit executable x86_64/
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archs << :x86_64
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end
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end
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return archs
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end
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