51 lines
1.1 KiB
Crystal
51 lines
1.1 KiB
Crystal
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module Logging
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extend self
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class LogBackend < Log::IOBackend
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@stdout = Log::IOBackend.new(io: STDOUT, formatter: LogFormat)
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@stderr = Log::IOBackend.new(io: STDERR, formatter: LogFormat)
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def write(entry : Log::Entry)
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if entry.severity >= Log::Severity::Error
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@stderr.write entry
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else
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@stdout.write entry
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end
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end
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end
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struct LogFormat < Log::StaticFormatter
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@@colors = {
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"FATAL" => :red,
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"ERROR" => :red,
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"WARN" => :yellow,
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"NOTICE" => :yellow,
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"INFO" => :green,
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"DEBUG" => :blue,
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"TRACE" => :light_blue,
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}
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def run
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string "#{@entry.message}".colorize(@@colors[@entry.severity.label])
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end
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end
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def self.setup(verbosity)
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Colorize.on_tty_only!
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verbosity = [0, verbosity].max
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verbosity = [6, verbosity].min
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severity = [
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Log::Severity::Fatal,
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Log::Severity::Error,
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Log::Severity::Warn,
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Log::Severity::Notice,
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Log::Severity::Info,
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Log::Severity::Debug,
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Log::Severity::Trace,
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][verbosity]
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Log.setup(
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severity,
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LogBackend.new)
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end
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end
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