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Contents
module Aai
module Utils
def clean_str str
str.strip.gsub(/[^\p{Alnum}_]+/, "_").gsub(/_+/, "_")
end
# Raises SystemExit if one of the fnames does not exist.
def check_files fnames
fnames.each do |fname|
AbortIf.abort_unless_file_exists fname
end
end
def two_ary_permutations a1, a2
permutations = []
a1.each do |elem1|
a2.each do |elem2|
permutations << [elem1, elem2] << [elem2, elem1]
end
end
permutations
end
def one_way_combinations a1, a2, no_duplicates=true
permutations = []
a1.each do |elem1|
a2.each do |elem2|
if !no_duplicates || (no_duplicates && elem1 != elem2)
permutations << [elem1, elem2]
end
end
end
permutations
end
# from https://stackoverflow.com/questions/2108727/ \
# which-in-ruby-checking-if-program-exists-in-path-from-ruby
def command? cmd
exts = ENV['PATHEXT'] ? ENV['PATHEXT'].split(';') : ['']
ENV['PATH'].split(File::PATH_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
return nil
end
def check_command cmd
path = command? cmd
AbortIf.abort_unless path,
"Missing #{cmd} command. " +
"Is it executable and on your path?"
path
end
end
end
Version data entries
7 entries across 7 versions & 1 rubygems