25 lines
670 B
Ruby
25 lines
670 B
Ruby
require "rake/file_task"
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require "rake/early_time"
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module Rake
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# A FileCreationTask is a file task that when used as a dependency will be
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# needed if and only if the file has not been created. Once created, it is
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# not re-triggered if any of its dependencies are newer, nor does trigger
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# any rebuilds of tasks that depend on it whenever it is updated.
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#
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class FileCreationTask < FileTask
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# Is this file task needed? Yes if it doesn't exist.
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def needed?
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! File.exist?(name)
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end
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# Time stamp for file creation task. This time stamp is earlier
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# than any other time stamp.
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def timestamp
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Rake::EARLY
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end
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end
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end
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