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# This source code is borrowed from:
# https://github.com/oneclick/rubyinstaller2/blob/b3dcbf69f131e44c78ea3a1c5e0041c223f266ce/lib/ruby_installer/build/utils.rb#L104-L144
module TaskExtension
# Extend rake's file task to be defined only once and to check the expected file is indeed generated
#
# The same as #task, but for #file.
# In addition this file task raises an error, if the file that is expected to be generated is not present after the block was executed.
def file(name, *args, &block)
task_once(name, block) do
super(name, *args) do |ta|
block&.call(ta).tap do
raise "file #{ta.name} is missing after task executed" unless File.exist?(ta.name)
end
end
end
end
# Extend rake's task definition to be defined only once, even if called several times
#
# This allows to define common tasks next to specific tasks.
# It is expected that any variation of the task's block is reflected in the task name or namespace.
# If the task name is identical, the task block is executed only once, even if the file task definition is executed twice.
def task(name, *args, &block)
task_once(name, block) do
super
end
end
private def task_once(name, block)
name = name.keys.first if name.is_a?(Hash)
if block &&
Rake::Task.task_defined?(name) &&
Rake::Task[name].instance_variable_get('@task_block_location') == block.source_location
# task is already defined for this target and the same block
# So skip double definition of the same action
Rake::Task[name]
elsif block
yield.tap do
Rake::Task[name].instance_variable_set('@task_block_location', block.source_location)
end
else
yield
end
end
end
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