##### LM #####
lex
	literal '-'
	token file /^('-'|0)(^0)*/
end

token word /(^0)+/
token zero /0/ 

lex
	token single /[qvh]/
	token with_opt /[oi]/
end

def item
	[file zero]
|	['-' single* zero]
|	['-' with_opt zero? word zero]

def args 
	[word zero item*]

cons ArgParser: parser<args> []

ArgV: list<str> ArgV = argv
for A: str in ArgV 
	send ArgParser [A '\0']

Args: args = ArgParser() 

print_xml( Args )
print( '\n' )
##### ARGS #####
-qv -h -o output sdf -i eth0 file
##### EXP #####
<args><word>./working/accum3.bin</word><zero>&#0;</zero><_repeat_item><item><_literal_0001>-</_literal_0001><_repeat_single><single>q</single><single>v</single></_repeat_single><zero>&#0;</zero></item><item><_literal_0001>-</_literal_0001><_repeat_single><single>h</single></_repeat_single><zero>&#0;</zero></item><item><_literal_0001>-</_literal_0001><with_opt>o</with_opt><_opt_zero><zero>&#0;</zero></_opt_zero><word>output</word><zero>&#0;</zero></item><item><file>sdf</file><zero>&#0;</zero></item><item><_literal_0001>-</_literal_0001><with_opt>i</with_opt><_opt_zero><zero>&#0;</zero></_opt_zero><word>eth0</word><zero>&#0;</zero></item><item><file>file</file><zero>&#0;</zero></item></_repeat_item></args>