module Gem::Util
This module contains various utility methods as module methods.
Public Class Methods
correct_for_windows_path(path)
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Corrects path
(usually returned by ‘Gem::URI.parse().path` on Windows), that comes with a leading slash.
# File rubygems/util.rb, line 111 def self.correct_for_windows_path(path) if path[0].chr == "/" && path[1].chr.match?(/[a-z]/i) && path[2].chr == ":" path[1..-1] else path end end
glob_files_in_dir(glob, base_path)
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Globs for files matching pattern
inside of directory
, returning absolute paths to the matching files.
# File rubygems/util.rb, line 103 def self.glob_files_in_dir(glob, base_path) Dir.glob(glob, base: base_path).map! {|f| File.expand_path(f, base_path) } end
gunzip(data)
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Zlib::GzipReader wrapper that unzips data
.
# File rubygems/util.rb, line 12 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
gzip(data)
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Zlib::GzipWriter wrapper that zips data
.
# File rubygems/util.rb, line 31 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
inflate(data)
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A Zlib::Inflate#inflate wrapper
# File rubygems/util.rb, line 47 def self.inflate(data) require "zlib" Zlib::Inflate.inflate data end
popen(*command)
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This calls IO.popen and reads the result
# File rubygems/util.rb, line 55 def self.popen(*command) IO.popen command, &:read end
silent_system(*command)
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Invokes system, but silences all output.
# File rubygems/util.rb, line 62 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
traverse_parents(directory, &block)
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Enumerates the parents of directory
.
# File rubygems/util.rb, line 82 def self.traverse_parents(directory, &block) return enum_for __method__, directory unless block_given? here = File.expand_path directory loop do begin Dir.chdir here, &block rescue StandardError Errno::EACCES end new_here = File.expand_path("..", here) return if new_here == here # toplevel here = new_here end end