require 'wiki/vikiwikistyle'

module Wiki
	class RDLikeWikiStyle < VikiWikiStyle
		#===================================================================
		# Format Rule
		#===================================================================

		# <pre>
		FM_PRE_S         = '...'
		FM_PRE_E         = '...'
		FM_SOFTPRE_S     = '-...'
		FM_SOFTPRE_E     = '-...'
		RE_PRE_S         = /^\.{3}$/
		RE_PRE_E         = /^\.{3}$/
		RE_SOFTPRE_S     = /^-\.{3}$/
		RE_SOFTPRE_E     = /^-\.{3}$/

		# <h1> to <h6>
		FM_H2            = '=%s'
		FM_H3            = '==%s'
		FM_H4            = '===%s'
		FM_H5            = '====%s'
		FM_H6            = '+%s'
		RE_H2            = /^=([^=].*)$/
		RE_H3            = /^==([^=].*)$/
		RE_H4            = /^===([^=].*)$/
		RE_H5            = /^====([^=].*)$/
		RE_H6            = /^\+([^\+].*)$/

		# <hr />
		FM_HR            = '----'
		RE_HR            = /^----+/

		# <div class="">
		FM_DIV_S         = '<<<%s'
		FM_DIV_E         = '>>>'
		RE_DIV_S         = /^<<<([A-Za-z]\w*)?$/
		RE_DIV_E         = /^>>>$/

		# <span class="">
		FM_SPAN          = '@{%s %s}'
		RE_SPAN          = /^\@\{(#{TX_IDENT})\s+([^}]*)\}/

		# <ul>
		FM_UL            = '*%s'
		RE_UL            = /^\*\s*(.*)/

		# <ol>
		FM_OL            = '(0)%s'
		RE_OL            = /^\(\d+\)\s*(.*)/

		# <dl>
		FM_DL            = ":%s\n  %s"
		FM_DL2           = ":%s\n  %s"
		RE_DT            = /^(?:\:|---)([^:-].*)$/
		RE_DD            = /^\s{2,}(.*)$/

		# <blockquote>
		FM_BLOCKQUOTE    = '>%s'
		RE_BLOCKQUOTE    = /^>(.+)$/

		# <table border="1">
		KW_TABLE         = '||'
		RE_TABLE         = /^\|\|(.+)$/

		# <table>
		KW_TABLE_N       = '|'
		RE_TABLE_N       = /^\|([^\|].*)$/

		# <td>
		FM_TD_LEFT       = '%s '
		FM_TD_CENTER     = ' %s '
		FM_TD_RIGHT      = ' %s'
		RE_TD_LEFT       = /^(.+)\s$/
		RE_TD_CENTER     = /^\s(.+)\s$/
		RE_TD_RIGHT      = /^\s(.+)$/

		# <!-- -->
		FM_COMMENT       = '//%s'
		RE_COMMENT       = /^\/\/(.+)$/

		# plugin
		FM_PLUGIN        = '#%s%s%s'
		RE_PLUGIN        = /^\#\s*(#{TX_IDENT})(?:\#(\S+))?(?:\s+(.+))?$/

		# WikiName and BlacketName
		FM_WIKINAME      = nil
		RE_WIKINAME      = nil
		FM_BRACKETNAME   = '((<%s>))'
		RE_BRACKETNAME   = /^\(\(<((?!URL::|IMG::)[^\|>]+)>\)\)/
		FM_ALIASNAME     = '((<%s|%s>))'
		RE_ALIASNAME     = /^\(\(<([^\|]+)\|((?!URL::|IMG::)[^>]+)>\)\)/

		# <em>
		FM_EM            = "((*%s*))"
		RE_EM            = /^\(\(\*([^\*]+)\*\)\)/

		# <strong>
		FM_STRONG        = "((**%s**))"
		RE_STRONG        = /^\(\(\*{2}([^\*]+)\*{2}\)\)/

		# <del>
		FM_DEL           = '((=%s=))'
		RE_DEL           = /^\(\(=([^=]+)=\)\)/

		# <tt>
		FM_TT            = '((;%s;))'
		RE_TT            = /^\(\(;([^;]+);\)\)/

		# <b>
		FM_B             = '((@%s@))'
		RE_B             = /^\(\(@([^@]+)@\)\)/

		# <code>
		FM_CODE          = '(({%s}))'
		RE_CODE          = /^\(\({([^}]+)}\)\)/

		# <var>
		FM_VAR           = '((|%s|))'
		RE_VAR           = /^\(\(\|([^\|]+)\|\)\)/

		# <kbd>
		FM_KBD           = '((%%%s%%))'
		RE_KBD           = /^\(\(%([^%]+)%\)\)/

		# escape
		FM_ESCAPE        = "(('%s'))"
		RE_ESCAPE        = /^\(\('(#{TX_NOPARE_M})'\)\)/

		# link and image
		FM_A             = '((<%s|URL::%s>))'
		RE_A             = /^\(\(<([^\|>]+)\|URL::([^>]+)>\)\)/
		FM_URL           = '((<URL::%s>))'
		RE_URL           = /^\(\(<URL::([^>]+)>\)\)/
		FM_IMG        = '((<%s|IMG::%s>))'
		RE_IMG        = /^\(\(<([^\|>]+)\|IMG::([^>]+)>\)\)/

		# plugin (inline)
		FM_INPLUGIN      = '#{%s%s%s}'
		RE_INPLUGIN      = /^\#\{(#{TX_IDENT})(?:\#(\S+))?(?:\s+(.+))?\}/

		# indent
		RE_INDENT        = /^(\s*)/

		# word
		RE_WORD          = /^([#{TX_WORD}]+)/

		# Plugin
		FM_PLUGIN_PRM    = " %s"
		RE_PLUGIN_PRM    = /^(?:\"((?:[^\"\\]|\\.)*)\"|(\S+))/
		FM_PLUGIN_HDC    = "<<%s"
		RE_PLUGIN_HDC    = /^<<(#{TX_IDENT})/
		FM_PLUGIN_SEP    = " "
		RE_PLUGIN_SEP    = /^\s+/

		BLOCK_PARSING_ORDER = [
			'plugin', 'div', 'softpre', 'pre', 'blockquote', 'comment',
			'h6', 'h5', 'h4', 'h3', 'h2',
			'hr', 'ul', 'ol', 'dt', 'table', 'table_n', 'p'
		]

		INLINE_PARSING_ORDER = [
			'url', 'span', 'inplugin', 'em', 'strong', 'tt',
			'b', 'code', 'var', 'kbd', 'del',
			'escape', 'aliasname', 'bracketname', 'img', 'a'
		]

		def tt_onparse(root, match)
			appendChild_inline(root, 'tt', nil, match[1])
		end
		def b_onparse(root, match)
			appendChild_inline(root, 'b', nil, match[1])
		end
		def code_onparse(root, match)
			appendChild_inline(root, 'code', nil, match[1])
		end
		def var_onparse(root, match)
			appendChild_inline(root, 'var', nil, match[1])
		end
		def kbd_onparse(root, match)
			appendChild_inline(root, 'kbd', nil, match[1])
		end
		def bracketname_onparse(root, match, _alias=false)
			text, wri = get_alias_uri(match[2], match[1])
			appendChild_inline(root, 'WikiName', {'wri'=>wri, 'bracket'=>true, 'alias'=>_alias}, text)
		end
		def aliasname_onparse(root, match)
			bracketname_onparse(root, match, true)
		end
		def a_onparse(root, match)
			text, href = get_alias_uri(match[2], match[1])
			appendChild_inline(root, 'a', {'href'=>href}, text)
		end
		def img_onparse(root, match)
			alt, src = get_alias_uri(match[2], match[1])
			appendChild_inline(root, 'img', {'src'=>src, 'alt'=>alt})
		end
		def dt_onparse(root, match, line, indent, lines)
			root = appendChild_block(root, 'dl', nil, nil, indent, APPEND_IF_NOT_EXIST)
			appendChild_block(root, 'dt', nil, match[1], indent, APPEND_CHILD)
			if @my::RE_DD === lines.first.gsub(/^\s{#{indent}}/, '') then
				lines.shift
				appendChild_block(root, 'dd', nil, $1+"\n", indent, APPEND_CHILD)
			end
		end

		def tt_ontext(node, outobj='')
			outobj << text_format(@my::FM_TT, generateChild(node))
		end
		def b_ontext(node, outobj='')
			outobj << text_format(@my::FM_B, generateChild(node))
		end
		def code_ontext(node, outobj='')
			outobj << text_format(@my::FM_CODE, generateChild(node))
		end
		def var_ontext(node, outobj='')
			outobj << text_format(@my::FM_VAR, generateChild(node))
		end
		def kbd_ontext(node, outobj='')
			outobj << text_format(@my::FM_KBD, generateChild(node))
		end
		def wikiname_ontext(node, outobj='')
			wri = node.getAttribute('wri'); text = generateChild(node)
			_alias = node.getAttribute('alias') == "true"
			outobj << (_alias ? text_format(@my::FM_ALIASNAME, text, wri) : text_format(@my::FM_BRACKETNAME, wri))
		end
		def a_ontext(node, outobj='')
			href = node.getAttribute('href')
			text = generateChild(node)
			outobj << ((href == text) ? text_format(@my::FM_URL, href) : text_format(@my::FM_A, text, href))
		end
		def img_ontext(node, outobj='')
			src = node.getAttribute('src')
			alt = node.getAttribute('alt')
			outobj << ((src == alt) ? text_format(@my::FM_URL, src)  : text_format(@my::FM_IMG, alt, src))
		end
	end
end