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	description: "A flexible layout using a pattern"
	usage: "[
		The conversion pattern is closely related to the printf function in C.
		is composed of literal text and format control expression called conversion
		specifiers.
		
		Each conversion specifier starts with an @ character and is followed by
		optional format modifiers and a conversion character. The conversion 
		character specifies the type of data, e.g., category, priority, date,
		message. The format modifiers control such things as field width, padding,
		left and right justification.
	]"
	project: "Project Goanna <http://sourceforge.net/projects/goanna>"
	library: "log4e"
	date: "$Date$"
	revision: "$Revision$"
	author: "Glenn Maughan <glennmaughan@goanna.info>"
	copyright: "Copyright (c) 2002 Glenn Maughan"
	license: "Eiffel Forum License v1 (see forum.txt)."

class interface
	L4E_PATTERN_LAYOUT

create 

	make (pattern: STRING)
			-- Create new pattern layout using 'new_pattern' to format
			-- the message
		require
			pattern_exists: pattern /= void

feature -- Initialisation

	make (pattern: STRING)
			-- Create new pattern layout using 'new_pattern' to format
			-- the message
		require
			pattern_exists: pattern /= void
	
feature -- Rendering

	footer: STRING
			-- Format a footer for this layout.
			-- (from L4E_SIMPLE_LAYOUT)
		ensure -- from L4E_LAYOUT
			footer_exists: Result /= void

	format (event: L4E_EVENT): STRING
			-- Format contents of 'event' according to this layout's
			-- formatting rules.
			-- Apply all converters to event in order.
		require -- from L4E_LAYOUT
			event_exists: event /= void
		ensure -- from L4E_LAYOUT
			formatted_exists: Result /= void

	header: STRING
			-- Format a header for this layout.
			-- (from L4E_SIMPLE_LAYOUT)
		ensure -- from L4E_LAYOUT
			header_exists: Result /= void
	
invariant

		-- from ANY
	reflexive_equality: standard_is_equal (Current)
	reflexive_conformance: conforms_to (Current)

end -- class L4E_PATTERN_LAYOUT


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Goanna Log4E -- Copyright © 2002 Glenn Maughan