/usr/lib/ruby/vendor_ruby/merb-core/core_ext/kernel.rb is in ruby-merb-core 1.1.3+dfsg-2.
This file is owned by root:root, with mode 0o644.
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# Loads the given string as a gem.
#
# :api: public
# @deprecated
def dependency(name, *opts, &blk)
warn "DEPRECATED: Use bundler to setup and load dependency #{name}."
options = opts.last.is_a?(Hash) ? opts.pop : {}
version = opts.pop unless opts.empty?
if version
warn "DEPRECATED: You want to load gem #{name} with specific version " \
"#{version}. This feature is not supported and the LATEST VERSION " \
"OF THE GEM WILL BE LOADED."
end
require (options[:require_as] ? options[:require_as] : name)
nil
end
# Loads both gem and library dependencies that are passed in as arguments.
#
# :api: public
# @deprecated
def dependencies(*args)
args.map do |arg|
case arg
when String then dependency(arg)
when Hash then arg.map { |r,v| dependency(r, v) }
when Array then arg.map { |r| dependency(r) }
end
end
nil
end
# Used in Merb.root/config/init.rb to tell Merb which ORM (Object Relational
# Mapper) you wish to use. Currently Merb has plugins to support
# ActiveRecord, DataMapper, and Sequel.
#
# ==== Parameters
# orm<Symbol>:: The ORM to use.
#
# ==== Returns
# nil
#
# ==== Example
# use_orm :datamapper
#
# # This will use the DataMapper generator for your ORM
# $ merb-gen model ActivityEvent
#
# ==== Notes
# If for some reason this is called more than once, latter
# call takes over other.
#
# :api: public
def use_orm(orm)
Merb.orm = orm
nil
end
# Used in Merb.root/config/init.rb to tell Merb which testing framework to
# use. Currently Merb has plugins to support RSpec and Test::Unit.
#
# ==== Parameters
# test_framework<Symbol>::
# The test framework to use. Currently only supports :rspec and :test_unit.
#
# ==== Returns
# nil
#
# ==== Example
# use_test :rspec
#
# # This will now use the RSpec generator for tests
# $ merb-gen model ActivityEvent
#
# :api: public
def use_testing_framework(test_framework)
Merb.test_framework = test_framework
nil
end
def use_test(*args)
use_testing_framework(*args)
end
# Used in Merb.root/config/init.rb to tell Merb which template engine to
# prefer.
#
# ==== Parameters
# template_engine<Symbol>
# The template engine to use.
#
# ==== Returns
# nil
#
# ==== Example
# use_template_engine :haml
#
# # This will now use haml templates in generators where available.
# $ merb-gen resource_controller Project
#
# :api: public
def use_template_engine(template_engine)
Merb.template_engine = template_engine
nil
end
# @param i<Fixnum> The caller number. Defaults to 1.
#
# @return <Array[Array]> The file, line and method of the caller.
#
# @example
# __caller_info__(1)
# # => ['/usr/lib/ruby/1.8/irb/workspace.rb', '52', 'irb_binding']
#
# :api: private
def __caller_info__(i = 1)
file, line, meth = caller[i].scan(/(.*?):(\d+):in `(.*?)'/).first
end
# @param file<String> The file to read.
# @param line<Fixnum> The line number to look for.
# @param size<Fixnum>
# Number of lines to include above and below the the line to look for.
# Defaults to 4.
#
# @return <Array[Array]>
# Triplets containing the line number, the line and whether this was the
# searched line.
#
# @example
# __caller_lines__('/usr/lib/ruby/1.8/debug.rb', 122, 2) # =>
# [
# [ 120, " def check_suspend", false ],
# [ 121, " return if Thread.critical", false ],
# [ 122, " while (Thread.critical = true; @suspend_next)", true ],
# [ 123, " DEBUGGER__.waiting.push Thread.current", false ],
# [ 124, " @suspend_next = false", false ]
# ]
#
# :api: private
def __caller_lines__(file, line, size = 4)
line = line.to_i
if file =~ /\(erubis\)/
yield :error, "Template Error! Problem while rendering", false
elsif !File.file?(file) || !File.readable?(file)
yield :error, "File `#{file}' not available", false
else
lines = File.read(file).split("\n")
first_line = (f = line - size - 1) < 0 ? 0 : f
if first_line.zero?
new_size = line - 1
lines = lines[first_line, size + new_size + 1]
else
new_size = nil
lines = lines[first_line, size * 2 + 1]
end
lines && lines.each_with_index do |str, index|
line_n = index + line
line_n = (new_size.nil?) ? line_n - size : line_n - new_size
yield line_n, str.chomp
end
end
end
# Takes a block, profiles the results of running the block
# specified number of times and generates HTML report.
#
# @param name<#to_s>
# The file name. The result will be written out to
# Merb.root/"log/#{name}.html".
# @param min<Fixnum>
# Minimum percentage of the total time a method must take for it to be
# included in the result. Defaults to 1.
#
# @return <String>
# The result of the profiling.
#
# @note
# Requires ruby-prof (<tt>sudo gem install ruby-prof</tt>)
#
# @example
# __profile__("MyProfile", 5, 30) do
# rand(10)**rand(10)
# puts "Profile run"
# end
#
# Assuming that the total time taken for #puts calls was less than 5% of the
# total time to run, #puts won't appear in the profile report.
# The code block will be run 30 times in the example above.
#
# :api: private
def __profile__(name, min=1, iter=100)
require 'ruby-prof' unless defined?(RubyProf)
return_result = ''
result = RubyProf.profile do
iter.times{return_result = yield}
end
printer = RubyProf::GraphHtmlPrinter.new(result)
path = File.join(Merb.root, 'log', "#{name}.html")
File.open(path, 'w') do |file|
printer.print(file, {:min_percent => min,
:print_file => true})
end
return_result
end
# Extracts an options hash if it is the last item in the args array. Used
# internally in methods that take *args.
#
# @param args<Array> The arguments to extract the hash from.
#
# @example
# def render(*args,&blk)
# opts = extract_options_from_args!(args) || {}
# # [...]
# end
#
# :api: public
def extract_options_from_args!(args)
args.pop if (args.last.instance_of?(Hash) || args.last.instance_of?(Mash))
end
# Checks that the given objects quack like the given conditions.
#
# @param opts<Hash>
# Conditions to enforce. Each key will receive a quacks_like? call with the
# value (see Object#quacks_like? for details).
#
# @raise <ArgumentError>
# An object failed to quack like a condition.
#
# :api: public
def enforce!(opts = {})
opts.each do |k,v|
raise ArgumentError, "#{k.inspect} doesn't quack like #{v.inspect}" unless k.quacks_like?(v)
end
end
unless Kernel.respond_to?(:debugger)
# Define debugger method so that code even works if debugger was not
# requested. Drops a note to the logs that Debugger was not available.
def debugger
Merb.logger.info! "\n***** Debugger requested, but was not " +
"available: Start server with --debugger " +
"to enable *****\n"
end
end
end
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