Module: ExecutableHooksInstaller

Defined in:
lib/executable-hooks/installer.rb

Class Method Summary collapse

Class Method Details

.bundler_app_script_text(inst, bin_file_name) ⇒ Object

Return the text for an application file.



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# File 'lib/executable-hooks/installer.rb', line 72

def self.bundler_app_script_text(inst, bin_file_name)
  <<-TEXT
#{shebang(inst, bin_file_name)}
#
# This file was generated by RubyGems.
#
# The application '#{inst.spec.name}' is installed as part of a gem, and
# this file is here to facilitate running it.
#

require 'rubygems'

version = "#{Gem::Requirement.default}"

if ARGV.first =~ /^_(.*)_$/ and Gem::Version.correct? $1 then
version = $1
ARGV.shift
end

gem '#{inst.spec.name}', version
load Gem.bin_path('#{inst.spec.name}', '#{bin_file_name}', version)
TEXT
end

.bundler_generate_bin(inst) ⇒ Object

Iterate through executables and generate wrapper for each one, extract of rubygems code



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# File 'lib/executable-hooks/installer.rb', line 4

def self.bundler_generate_bin(inst)
  return if inst.spec.executables.nil?
  executables = inst.spec.executables.reject{ |name| name == 'executable-hooks-uninstaller' }
  return if executables.empty?
  bindir = inst.bin_dir ? inst.bin_dir : Gem.bindir(inst.gem_home)
  executables.each do |filename|
    filename.untaint
    original = File.join bindir, filename
    if File.exists?( original )
      bin_script_path = File.join bindir, inst.formatted_program_filename(filename)
      FileUtils.rm_f bin_script_path
      File.open bin_script_path, 'wb', 0755 do |file|
        file.print bundler_app_script_text(inst, filename)
      end
      inst.say bin_script_path if Gem.configuration.really_verbose
    else
      inst.say "Can not find #{inst.spec.name} in GEM_PATH"
      break
    end
  end
end

.env_path ⇒ Object 



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# File 'lib/executable-hooks/installer.rb', line 67

def self.env_path
  @env_path ||= Gem::Installer::ENV_PATHS.find {|path| File.executable?(path) }
end

.shebang(inst, bin_file_name) ⇒ Object 



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# File 'lib/executable-hooks/installer.rb', line 27

def self.shebang(inst, bin_file_name)
  # options were defined first in 1.5, we want to support back to 1.3.7
  ruby_name = Gem::ConfigMap[:ruby_install_name] if inst.instance_variable_get(:@env_shebang)
  bindir = inst.bin_dir ? inst.bin_dir : Gem.bindir(inst.gem_home)
  path = File.join bindir, inst.formatted_program_filename(bin_file_name)
  first_line = File.open(path, "rb") {|file| file.gets}

  if /\A#!/ =~ first_line then
    # Preserve extra words on shebang line, like "-w". Thanks RPA.
    shebang = first_line.sub(/\A\#!.*?ruby\S*((\s+\S+)+)/, "#!#{Gem.ruby}")
    opts = $1
    shebang.strip! # Avoid nasty ^M issues.
  end

  if which = Gem.configuration[:custom_shebang]
    which = which.gsub(/\$(\w+)/) do
      case $1
      when "env"
        env_path
      when "ruby"
        "#{Gem.ruby}#{opts}"
      when "exec"
        bin_file_name
      when "name"
        inst.spec.name
      end
    end

    return "#!#{which}"
  end

  if not ruby_name then
    "#!#{Gem.ruby}#{opts}"
  elsif opts then
    "#!/bin/sh\n'exec' #{ruby_name.dump} '-x' \"$0\" \"$@\"\n#{shebang}"
  else
    "#!#{env_path} #{ruby_name}"
  end
end