RosettaCodeData/Task/Rosetta-Code-Count-examples/Wren/rosetta-code-count-examples...

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/* Rosetta_Code_Count_examples.wren */
import "./pattern" for Pattern
var CURLOPT_URL = 10002
var CURLOPT_FOLLOWLOCATION = 52
var CURLOPT_WRITEFUNCTION = 20011
var CURLOPT_WRITEDATA = 10001
foreign class Buffer {
construct new() {} // C will allocate buffer of a suitable size
foreign value // returns buffer contents as a string
}
foreign class Curl {
construct easyInit() {}
foreign easySetOpt(opt, param)
foreign easyPerform()
foreign easyCleanup()
}
var curl = Curl.easyInit()
var getContent = Fn.new { |url|
var buffer = Buffer.new()
curl.easySetOpt(CURLOPT_URL, url)
curl.easySetOpt(CURLOPT_FOLLOWLOCATION, 1)
curl.easySetOpt(CURLOPT_WRITEFUNCTION, 0) // write function to be supplied by C
curl.easySetOpt(CURLOPT_WRITEDATA, buffer)
curl.easyPerform()
return buffer.value
}
var url = "https://www.rosettacode.org/w/api.php?action=query&list=categorymembers&cmtitle=Category:Programming_Tasks&cmlimit=500&format=xml"
var content = getContent.call(url)
var p = Pattern.new("title/=\"[+1^\"]\"")
var matches = p.findAll(content)
for (m in matches) {
var title = m.capsText[0].replace("'", "'").replace(""", "\"")
var title2 = title.replace(" ", "_").replace("+", "\%252B")
var taskUrl = "https://www.rosettacode.org/w/index.php?title=%(title2)&action=raw"
var taskContent = getContent.call(taskUrl)
var lines = taskContent.split("\n")
var count = lines.count { |line| line.trim().startsWith("=={{header|") }
System.print("%(title) : %(count) examples")
}
curl.easyCleanup()