XML/Input: Difference between revisions

=={{header|Wren}}==

{{libheader|Wren-pattern}}

{{libheader|Wren-fmt}}

Wren doesn't currently have an XML parser though we don't really need one for this task as string pattern matching is sufficient to extract the student names.

<lang ecmascript>import "/pattern" for Pattern

import "/fmt" for Conv

var xml =

"<Students>

<Student Name=\"April\" Gender=\"F\" DateOfBirth=\"1989-01-02\" />

<Student Name=\"Bob\" Gender=\"M\" DateOfBirth=\"1990-03-04\" />

<Student Name=\"Chad\" Gender=\"M\" DateOfBirth=\"1991-05-06\" />

<Student Name=\"Dave\" Gender=\"M\" DateOfBirth=\"1992-07-08\">

<Pet Type=\"dog\" Name=\"Rover\" />

</Student>

<Student DateOfBirth=\"1993-09-10\" Gender=\"F\" Name=\"&#x00C9;mily\" />

</Students>"

var p = Pattern.new("<+1^>>")

var p2 = Pattern.new(" Name/=\"[+1^\"]\"")

var p3 = Pattern.new("/&/#x[+1/h];")

var matches = p.findAll(xml)

for (m in matches) {

var text = m.text

if (text.startsWith("<Student ")) {

var match = p2.find(m.text)

if (match) {

var name = match.captures[0].text

var escapes = p3.findAll(name)

for (esc in escapes) {

var hd = esc.captures[0].text

var char = String.fromCodePoint(Conv.atoi(hd, 16))

name = name.replace(esc.text, char)

}

System.print(name)

}

}

}</lang>

{{out}}

<pre>

April

Bob

Chad

Dave

Émily

</pre>