Simple converter from markdown to textile.

markdownToTextile.groovy

import java.util.regex.*


def br = System.getProperty('line.separator')


def getNoteBody = {
		def out = ''<<''
		def noteHeaderEnd=false
		new StringReader(it).each{
			if( noteHeaderEnd==false && (it =~ /^#[^#]/).find() ){ noteHeaderEnd=true }
			if( noteHeaderEnd==true ){ out << it << br }
		}
		out.toString()
}



def toTextile = { line->

	def m1 = (line =~ /^(.*)<(http.*?)>(.*)$/)
	if( m1.find() ){
		line = "${m1.group(1)}[${m1.group(2)}]${m1.group(3)}"
	}

	line = line.replaceAll(/^#### /,'h4. ')
	line = line.replaceAll(/^### /, 'h3. ')
	line = line.replaceAll(/^## /,  'h2. ')
	line = line.replaceAll(/^# /,   'h1. ')

	line = line.replaceAll(/^- /,   '* ')
	line = line.replaceAll(/^    - /,   '** ')
	line = line.replaceAll(/^        - /,   '*** ')
	line = line.replaceAll(/^            - /,   '**** ')

	line = line.replaceAll(/^1. /,   '# ')
	line = line.replaceAll(/^    1. /,   '## ')
	line = line.replaceAll(/^        1. /,   '### ')
	line = line.replaceAll(/^            1. /,   '#### ')
	
	line
}


def inputFile = new File(args[0])
def outputFile = new File(args[1])

def text = inputFile.getText('UTF-8')
text = getNoteBody(text)
text = text.replace('{console}','{code}')



def out = ''<<''
boolean inCodeBlock=false

new StringReader(text).each{ line->
	boolean onCodeMacro=false

	def pat = Pattern.compile('^\\{code\\}')
	def m1 = pat.matcher(line)

	if( inCodeBlock==false ){
		if( m1.find() ){
			inCodeBlock=true
			onCodeMacro=true
		}
	}
	else{
		if( m1.find() ){
			inCodeBlock=false
			onCodeMacro=true
		}
	}

	if( onCodeMacro )  out << line << br 
	else {
		if( inCodeBlock ){
			out << line << br
		}
		else{
			out << toTextile(line) << br
		}
	}
}




def w = outputFile.newWriter('UTF-8')
w.print out.toString()	
w.close()