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Contents
module Vagrant
module Spec
class Which
# which is like the Unix `which` tool, it returns the full path
# to an executable. This is especially important in Windows environments
# where the suffix of a file (".exe", ".bat", etc.) must be given
# to start child processes.
def self.which(cmd)
exts = nil
if ENV['PATHEXT'].nil?
# If the PATHEXT variable is empty, we're on *nix and need to find
# the exact filename
exts = ['']
elsif File.extname(cmd).length != 0
# On Windows: if filename contains an extension, we must match that
# exact filename
exts = ['']
else
# On Windows: otherwise try to match all possible executable file
# extensions (.EXE .COM .BAT etc.)
exts = ENV['PATHEXT'].split(';')
end
ENV['PATH'].encode('UTF-8', 'binary', invalid: :replace, undef: :replace, replace: '').split(File::PATH_SEPARATOR).each do |path|
exts.each do |ext|
exe = "#{path}#{File::SEPARATOR}#{cmd}#{ext}"
return exe if File.executable? exe
end
end
return nil
end
end
end
end
Version data entries
96 entries across 29 versions & 2 rubygems