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