зеркало из https://github.com/github/ruby.git
110 строки
3.1 KiB
Ruby
110 строки
3.1 KiB
Ruby
#
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# Copyright (c) 2008 James M. Lawrence
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#
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# Permission is hereby granted, free of charge, to any person
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# obtaining a copy of this software and associated documentation files
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# (the "Software"), to deal in the Software without restriction,
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# including without limitation the rights to use, copy, modify, merge,
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# publish, distribute, sublicense, and/or sell copies of the Software,
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# and to permit persons to whom the Software is furnished to do so,
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# subject to the following conditions:
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#
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# The above copyright notice and this permission notice shall be
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# included in all copies or substantial portions of the Software.
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#
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# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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# BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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# ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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# CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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# SOFTWARE.
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#
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require 'rbconfig'
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#
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# Alternate implementations of system() and backticks `` on Windows
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# for ruby-1.8 and earlier.
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#
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module Rake::AltSystem
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WINDOWS = RbConfig::CONFIG["host_os"] =~
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%r!(msdos|mswin|djgpp|mingw|[Ww]indows)!
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class << self
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def define_module_function(name, &block)
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define_method(name, &block)
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module_function(name)
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end
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end
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if WINDOWS and RUBY_VERSION < "1.9.0"
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RUNNABLE_EXTS = %w[com exe bat cmd]
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RUNNABLE_PATTERN = %r!\.(#{RUNNABLE_EXTS.join('|')})\Z!i
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define_module_function :kernel_system, &Kernel.method(:system)
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define_module_function :kernel_backticks, &Kernel.method(:'`')
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module_function
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def repair_command(cmd)
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"call " + (
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if cmd =~ %r!\A\s*\".*?\"!
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# already quoted
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cmd
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elsif match = cmd.match(%r!\A\s*(\S+)!)
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if match[1] =~ %r!/!
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# avoid x/y.bat interpretation as x with option /y
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%Q!"#{match[1]}"! + match.post_match
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else
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# a shell command will fail if quoted
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cmd
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end
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else
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# empty or whitespace
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cmd
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end
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)
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end
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def find_runnable(file)
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if file =~ RUNNABLE_PATTERN
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file
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else
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RUNNABLE_EXTS.each { |ext|
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if File.exist?(test = "#{file}.#{ext}")
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return test
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end
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}
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nil
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end
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end
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def system(cmd, *args)
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repaired = (
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if args.empty?
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[repair_command(cmd)]
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elsif runnable = find_runnable(cmd)
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[File.expand_path(runnable), *args]
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else
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# non-existent file
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[cmd, *args]
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end
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)
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kernel_system(*repaired)
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end
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def backticks(cmd)
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kernel_backticks(repair_command(cmd))
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end
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define_module_function :'`', &method(:backticks)
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else
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# Non-Windows or ruby-1.9+: same as Kernel versions
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define_module_function :system, &Kernel.method(:system)
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define_module_function :backticks, &Kernel.method(:'`')
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define_module_function :'`', &Kernel.method(:'`')
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end
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end
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