RosettaCodeData/Task/Rosetta-Code-Rank-languages-by-popularity/Oz/rosetta-code-rank-languages-by-popularity.oz
2026-04-30 12:34:36 -04:00

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declare
[HTTPClient] = {Module.link ['x-ozlib://mesaros/net/HTTPClient.ozf']}
[Regex] = {Module.link ['x-oz://contrib/regex']}
fun {GetPage RawUrl}
Client = {New HTTPClient.urlGET init(inPrms(toFile:false toStrm:true) _)}
Url = {VirtualString.toString RawUrl}
OutParams
HttpResponseParams
in
{Client getService(Url ?OutParams ?HttpResponseParams)}
{Client closeAll(true)}
OutParams.sOut
end
fun {GetCategories Doc}
{Map {Regex.allMatches "<li><a[^>]+>([^<]+)</a> \\(([0-9]+) member" Doc}
fun {$ Match}
Category = {Regex.group 1 Match Doc}
Count = {String.toInt {ByteString.toString {Regex.group 2 Match Doc}}}
in
Category#Count
end
}
end
Url = "http://www.rosettacode.org/mw/index.php?title=Special:Categories&limit=5000"
{System.showInfo "Retrieving..."}
Doc = {GetPage Url}
{System.showInfo "Parsing..."}
Cs = {GetCategories Doc}
in
for
Cat#Count in {Sort Cs fun {$ _#C1 _#C2} C1 > C2 end}
I in 1..20
do
{System.showInfo I#". "#Count#" - "#Cat}
end