Source

spinu12 / modules / stdlib / lib / puppet / parser / functions / strftime.rb

#
# strftime.rb
#

module Puppet::Parser::Functions
  newfunction(:strftime, :type => :rvalue, :doc => <<-EOS
This function returns formatted time.

*Examples:*

To return the time since epoch:

    strftime("%s")

To return the date:

    strftime("%Y-%m-%d")

*Format meaning:*

    %a - The abbreviated weekday name (``Sun'')
    %A - The  full  weekday  name (``Sunday'')
    %b - The abbreviated month name (``Jan'')
    %B - The  full  month  name (``January'')
    %c - The preferred local date and time representation
    %C - Century (20 in 2009)
    %d - Day of the month (01..31)
    %D - Date (%m/%d/%y)
    %e - Day of the month, blank-padded ( 1..31)
    %F - Equivalent to %Y-%m-%d (the ISO 8601 date format)
    %h - Equivalent to %b
    %H - Hour of the day, 24-hour clock (00..23)
    %I - Hour of the day, 12-hour clock (01..12)
    %j - Day of the year (001..366)
    %k - hour, 24-hour clock, blank-padded ( 0..23)
    %l - hour, 12-hour clock, blank-padded ( 0..12)
    %L - Millisecond of the second (000..999)
    %m - Month of the year (01..12)
    %M - Minute of the hour (00..59)
    %n - Newline (\n)
    %N - Fractional seconds digits, default is 9 digits (nanosecond)
            %3N  millisecond (3 digits)
            %6N  microsecond (6 digits)
            %9N  nanosecond (9 digits)
    %p - Meridian indicator (``AM''  or  ``PM'')
    %P - Meridian indicator (``am''  or  ``pm'')
    %r - time, 12-hour (same as %I:%M:%S %p)
    %R - time, 24-hour (%H:%M)
    %s - Number of seconds since 1970-01-01 00:00:00 UTC.
    %S - Second of the minute (00..60)
    %t - Tab character (\t)
    %T - time, 24-hour (%H:%M:%S)
    %u - Day of the week as a decimal, Monday being 1. (1..7)
    %U - Week  number  of the current year,
            starting with the first Sunday as the first
            day of the first week (00..53)
    %v - VMS date (%e-%b-%Y)
    %V - Week number of year according to ISO 8601 (01..53)
    %W - Week  number  of the current year,
            starting with the first Monday as the first
            day of the first week (00..53)
    %w - Day of the week (Sunday is 0, 0..6)
    %x - Preferred representation for the date alone, no time
    %X - Preferred representation for the time alone, no date
    %y - Year without a century (00..99)
    %Y - Year with century
    %z - Time zone as  hour offset from UTC (e.g. +0900)
    %Z - Time zone name
    %% - Literal ``%'' character
    EOS
  ) do |arguments|

    # Technically we support two arguments but only first is mandatory ...
    raise(Puppet::ParseError, "strftime(): Wrong number of arguments " +
      "given (#{arguments.size} for 1)") if arguments.size < 1

    format = arguments[0]

    raise(Puppet::ParseError, 'strftime(): You must provide ' +
      'format for evaluation') if format.empty?

    # The Time Zone argument is optional ...
    time_zone = arguments[1] if arguments[1]

    time = Time.new

    # There is probably a better way to handle Time Zone ...
    if time_zone and not time_zone.empty?
      original_zone = ENV['TZ']

      local_time = time.clone
      local_time = local_time.utc

      ENV['TZ'] = time_zone

      time = local_time.localtime

      ENV['TZ'] = original_zone
    end

    result = time.strftime(format)

    return result
  end
end

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