# frozen_string_literal: true require_relative 'deprecate' ## # This module contains various utility methods as module methods. module Gem::Util ## # Zlib::GzipReader wrapper that unzips +data+. def self.gunzip(data) require 'zlib' require 'stringio' data = StringIO.new(data, 'r') gzip_reader = begin Zlib::GzipReader.new(data) rescue Zlib::GzipFile::Error => e raise e.class, e.inspect, e.backtrace end unzipped = gzip_reader.read unzipped.force_encoding Encoding::BINARY unzipped end ## # Zlib::GzipWriter wrapper that zips +data+. def self.gzip(data) require 'zlib' require 'stringio' zipped = StringIO.new(String.new, 'w') zipped.set_encoding Encoding::BINARY Zlib::GzipWriter.wrap zipped do |io| io.write data end zipped.string end ## # A Zlib::Inflate#inflate wrapper def self.inflate(data) require 'zlib' Zlib::Inflate.inflate data end ## # This calls IO.popen and reads the result def self.popen(*command) IO.popen command, &:read end ## # Invokes system, but silences all output. def self.silent_system(*command) opt = {:out => IO::NULL, :err => [:child, :out]} if Hash === command.last opt.update(command.last) cmds = command[0...-1] else cmds = command.dup end system(*(cmds << opt)) end class << self extend Gem::Deprecate rubygems_deprecate :silent_system end ## # Enumerates the parents of +directory+. def self.traverse_parents(directory, &block) return enum_for __method__, directory unless block_given? here = File.expand_path directory loop do Dir.chdir here, &block rescue Errno::EACCES new_here = File.expand_path('..', here) return if new_here == here # toplevel here = new_here end end ## # Globs for files matching +pattern+ inside of +directory+, # returning absolute paths to the matching files. def self.glob_files_in_dir(glob, base_path) if RUBY_VERSION >= "2.5" Dir.glob(glob, base: base_path).map! {|f| File.expand_path(f, base_path) } else Dir.glob(File.expand_path(glob, base_path)) end end ## # Corrects +path+ (usually returned by `URI.parse().path` on Windows), that # comes with a leading slash. def self.correct_for_windows_path(path) if path[0].chr == '/' && path[1].chr =~ /[a-z]/i && path[2].chr == ':' path[1..-1] else path end end end