51 lines
1.4 KiB
Ruby
51 lines
1.4 KiB
Ruby
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require 'sass/logger/log_level'
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# A logger that delays messages until they're explicitly flushed to an inner
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# logger.
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#
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# This can be installed around the current logger by calling \{#install!}, and
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# the original logger can be replaced by calling \{#uninstall!}. The log
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# messages can be flushed by calling \{#flush}.
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class Sass::Logger::Delayed < Sass::Logger::Base
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# Installs a new delayed logger as the current Sass logger, wrapping the
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# original logger.
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#
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# This can be undone by calling \{#uninstall!}.
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#
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# @return [Sass::Logger::Delayed] The newly-created logger.
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def self.install!
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logger = Sass::Logger::Delayed.new(Sass.logger)
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Sass.logger = logger
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logger
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end
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# Creates a delayed logger wrapping `inner`.
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#
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# @param inner [Sass::Logger::Base] The wrapped logger.
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def initialize(inner)
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self.log_level = inner.log_level
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@inner = inner
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@messages = []
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end
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# Flushes all queued logs to the wrapped logger.
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def flush
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@messages.each {|(l, m)| @inner.log(l, m)}
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end
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# Uninstalls this logger from \{Sass.logger\}. This should only be called if
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# the logger was installed using \{#install!}
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def uninstall!
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if Sass.logger != self
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throw Exception.new("Can't uninstall a logger that's not currently installed.")
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end
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@inner.log_level = log_level
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Sass.logger = @inner
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end
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def _log(level, message)
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@messages << [level, message]
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end
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end
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