RosettaCodeData/Task/URL-parser/J/url-parser-1.j

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split=:1 :0
({. ; ] }.~ 1+[)~ i.&m
)
uriparts=:3 :0
'server fragment'=. '#' split y
'sa query'=. '?' split server
'scheme authpath'=. ':' split sa
scheme;authpath;query;fragment
)
queryparts=:3 :0
(0<#y)#<;._1 '?',y
)
authpathparts=:3 :0
if. '//' -: 2{.y do.
split=. <;.1 y
(}.1{::split);;2}.split
else.
'';y
end.
)
authparts=:3 :0
if. '@' e. y do.
'userinfo hostport'=. '@' split y
else.
hostport=. y [ userinfo=.''
end.
if. '[' = {.hostport do.
'host_t port_t'=. ']' split hostport
assert. (0=#port_t)+.':'={.port_t
(':' split userinfo),(host_t,']');}.port_t
else.
(':' split userinfo),':' split hostport
end.
)
taskparts=:3 :0
'scheme authpath querystring fragment'=. uriparts y
'auth path'=. authpathparts authpath
'user creds host port'=. authparts auth
query=. queryparts querystring
export=. ;:'scheme user creds host port path query fragment'
(#~ 0<#@>@{:"1) (,. do each) export
)