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Contents
# http://stackoverflow.com/questions/2108727/
# which-in-ruby-checking-if-program-exists-in-path-from-ruby
module Quality
# Determine where a given executable lives, like the UNIX 'which' command
class Which
def initialize(env: ENV,
file: File,
separator: File::PATH_SEPARATOR)
@env = env
@file = file
@separator = separator
end
def which(cmd)
exts = @env['PATHEXT'] ? @env['PATHEXT'].split(';') : ['']
@env['PATH'].split(@separator).each do |path|
exts.each do |ext|
exe = @file.join(path, "#{cmd}#{ext}")
return exe if @file.executable?(exe) && !@file.directory?(exe)
end
end
nil
end
end
end
Version data entries
15 entries across 15 versions & 1 rubygems