Class: String

Inherits:
Object show all
Defined in:
lib/rb.rotate/configuration.rb

Overview

String extensions

Constant Summary collapse

TO_TIME_MATCHER = 
/(\d+)\s*((?:year|month|week|day|hour|minute|second))s?/i

Instance Method Summary collapse

Instance Method Details

#to_bytes ⇒ Object

Converts number with units to bytes count.



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# File 'lib/rb.rotate/configuration.rb', line 240

def to_bytes
    value = self.to_i
    if value == 0
        raise Exception::new("Invalid size specification: " << self << ".")
    end
    
    exponent = nil
    case self[-1]
        when ?M
            exponent = 2
        when ?G
            exponent = 3
        when ?K
            exponent = 1
        when ?0, ?1, ?2, ?3, ?4, ?5, ?6, ?7, ?8, ?9
            exponent = 0
        else
            raise Exception::new("Invalid unit in size specification: " << self << ".")
    end
    
    return value * (1024 ** exponent)
end

#to_seconds ⇒ Object

Converts string identifier of time period to seconds.



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# File 'lib/rb.rotate/configuration.rb', line 267

def to_seconds

    period = nil
    case self.to_sym
        when :yearly
            period = "1 year"
        when :monthly
            period = "1 month"
        when :weekly
            period = "1 week"
        when :daily
            period = "1 day"
        when :hourly
            period = "1 hour"
        else
            period = self
    end
    
    matches = period.match(self.class::TO_TIME_MATCHER)
    if matches.nil?
        raise Exception::new("Invalid period specification: " << self << ".")
    end
    
    count = matches[1].to_i
    unit = matches[2].to_sym
    seconds = nil
    
    case unit
        when :year
            seconds = 365 * 24 * 60 * 60
        when :month
            seconds = 30 * 24 * 60 * 60
        when :week
            seconds = 7 * 24 * 60 * 60
        when :day
            seconds = 24 * 60 * 60
        when :hour
            seconds = 60 * 60
        when :second
            seconds = 1
    end
    
    return seconds * count
end