XML/Output

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< XML
Revision as of 18:33, 9 June 2009 by rosettacode>Paddy3118 (→‎{{header|Python}}: Updated after task modification.)
Task
XML/Output
You are encouraged to solve this task according to the task description, using any language you may know.

Create a function that takes a list of character names and a list of corresponding remarks and returns an XML doccument of <Character> elements each with a name attributes and each enclosing its remarks. All <Character> elements are to be enclosed in turn, in an outer <CharacterRemarks> element.

As an example, calling the function with the three names of:

April
Tam O'Shanter
Emily

And three remarks of:

Bubbly: I'm > Tam and <= Emily
Burns: "When chapman billies leave the street ..."
Short & shrift

Should produce the XML (but not necessarily with the indentation):

<CharacterRemarks>
    <Character name="April">Bubbly: I'm &gt; Tam and &lt;= Emily</Character>
    <Character name="Tam O&apos;Shanter"
            >Burns: &quot;When chapman billies leave the street ...&quot;</Character>
    <Character name="Emily">Short &amp; shrift</Character>
</CharacterRemarks>

The document may include an <?xml?> declaration and document type declaration, but these are optional. If attempting this task by direct string manipulation, the implementation must include code to perform entity substitution for the characters that have entities defined in the XML 1.0 specification.

Note: the example is chosen to show correct escaping of XML strings Note too that although the task is written to take two lists of corresponding data, a single mapping/hash/dictionary of names to remarks is also acceptable


C

This example may be incorrect due to a recent change in the task requirements or a lack of testing. Please verify it and remove this message. If the example does not match the requirements or does not work, replace this message with Template:incorrect or fix the code yourself.
Library: libXML

<lang c>#include <stdio.h>

  1. include <stdlib.h>
  2. include <string.h>
  3. include <libxml/parser.h>
  4. include <libxml/tree.h>

char *names[] = {

 "April", "Bob", "Chad", "Dave", "Emily", NULL

};

int main() {

 xmlDoc *doc = NULL;
 xmlNode *root = NULL, *node;
 char **next;
 doc = xmlNewDoc("1.0");
 root = xmlNewNode(NULL, "Students");
 xmlDocSetRootElement(doc, root);
 for(next = names; *next != NULL; next++) {
   node = xmlNewNode(NULL, "Student");
   (void)xmlNewProp(node, "Name", *next);
   xmlAddChild(root, node);
 }
 xmlElemDump(stdout, doc, root);
 xmlFreeDoc(doc);
 xmlCleanupParser();
 
 return EXIT_SUCCESS;

}</lang>

OCaml

This example may be incorrect due to a recent change in the task requirements or a lack of testing. Please verify it and remove this message. If the example does not match the requirements or does not work, replace this message with Template:incorrect or fix the code yourself.

<lang ocaml>

  1. #directory "+site-lib/xml-light" (* or maybe just "+xml-light" *) ;;
  1. #load "xml-light.cma" ;;
  1. let students = ["April"; "Bob"; "Chad"; "Dave"; "Emily"] in
 let tags_students = List.map (fun name ->
     Xml.Element ("Student", [("Name", name)], [])
   ) students in
 print_endline (
   Xml.to_string_fmt (Xml.Element ("Students", [], tags_students)))
 ;;

<Students>

 <Student Name="April"/>
 <Student Name="Bob"/>
 <Student Name="Chad"/>
 <Student Name="Dave"/>
 <Student Name="Emily"/>

</Students> - : unit = () </lang>

Perl

This example may be incorrect due to a recent change in the task requirements or a lack of testing. Please verify it and remove this message. If the example does not match the requirements or does not work, replace this message with Template:incorrect or fix the code yourself.
Library: XML::MiniMini

<lang perl>#! /usr/bin/perl use strict; use XML::Mini::Document;

my @students = ( "April", "Bob", "Chad", "Dave", "Emily" );

my $doc = XML::Mini::Document->new(); my $root = $doc->getRoot(); my $studs = $root->createChild("Students"); foreach my $s (@students) {

   my $stud = $studs->createChild("Student");
   $stud->attribute("Name", $s);

} print $doc->toString();

exit 0;</lang>

Python

Normal output is all one line of XML, the .replace(...) makes it more readable. <lang python>>>> from xml.etree import ElementTree as ET >>> from itertools import izip >>> def characterstoxml(names, remarks): root = ET.Element("CharacterRemarks") for name, remark in izip(names, remarks): c = ET.SubElement(root, "Character", {'name': name}) c.text = remark return ET.tostring(root)

>>> print characterstoxml( names = ["April", "Tam O'Shanter", "Emily"], remarks = [ "Bubbly: I'm > Tam and <= Emily", 'Burns: "When chapman billies leave the street ..."', 'Short & shrift' ] ).replace('><','>\n<')</lang> Gives the output:

<CharacterRemarks>
<Character name="April">Bubbly: I'm &gt; Tam and &lt;= Emily</Character>
<Character name="Tam O&apos;Shanter">Burns: "When chapman billies leave the street ..."</Character>
<Character name="Emily">Short &amp; shrift</Character>
</CharacterRemarks>

Ruby

This example may be incorrect due to a recent change in the task requirements or a lack of testing. Please verify it and remove this message. If the example does not match the requirements or does not work, replace this message with Template:incorrect or fix the code yourself.
Library: REXML

<lang ruby>require 'rexml/document' include REXML

doc = Document.new root = doc.add_element("Students")

%w(April Bob Chad David Emily).each do |name|

 root.add_element("Student", {'Name' => name})

end

  1. output with no added whitespace

doc.write print "\n\n"

  1. to reproduce the sample output of the task

doc.write($stdout, 2, false, true)</lang>

produces

<Students><Student Name='April'/><Student Name='Bob'/><Student Name='Chad'/><Student Name='David'/><Student Name='Emily'/></Students>

<Students>
  <Student Name='April' />
  <Student Name='Bob' />
  <Student Name='Chad' />
  <Student Name='David' />
  <Student Name='Emily' />
</Students>

Slate

This example may be incorrect due to a recent change in the task requirements or a lack of testing. Please verify it and remove this message. If the example does not match the requirements or does not work, replace this message with Template:incorrect or fix the code yourself.

<lang slate> slate[1]> [ | writer |

 writer: (Xml Writer newOn:  new writer).
 writer inTag: 'Students' do: [ |:w|
   {'April'. 'Bob'. 'Chad'. 'Dave'. 'Emily'} 
     do: [|:name| w emitTag: 'Student' &attributes: {'Name' -> name}].
 ].
 writer contents

] do.


'<Students><Student Name="April" /><Student Name="Bob" /><Student Name="Chad" /><Student Name="Dave" /><Student Name="Emily" /></Students>' </lang>

Tcl

This example may be incorrect due to a recent change in the task requirements or a lack of testing. Please verify it and remove this message. If the example does not match the requirements or does not work, replace this message with Template:incorrect or fix the code yourself.

Using only Tcl string manipulation: <lang Tcl> proc < {name attl args} {

   set res <$name
   foreach {att val} $attl {
       append res " $att='[string map {' '} $val]'"
   }
   if {[llength $args]} {
       append res >
       foreach a $args {
           append res \n$a
       } 
       append res </$name>
   } else {append res />}
   return $res

} set cmd {< Students {}} foreach XXX {April Bob Chad Dave Emily O'Connor} {

   append cmd " \[< Student {Name $XXX}\]"

} puts [eval $cmd]</lang>

produces

<Students>
<Student Name='April'/>
<Student Name='Bob'/>
<Student Name='Chad'/>
<Student Name='Dave'/>
<Student Name='Emily'/>
<Student Name='O'Connor'/></Students>

Using

Library: tDOM

<lang tcl>package require tdom set xml [dom createDocument Students] foreach name {April Bob Chad Dave Emily} {

   set element [$xml createElement Student]
   $element setAttribute Name $name
   [$xml documentElement] appendChild $element

} $xml asXML</lang>

<Students>
    <Student Name="April"/>
    <Student Name="Bob"/>
    <Student Name="Chad"/>
    <Student Name="Dave"/>
    <Student Name="Emily"/>
</Students>

Using

Library: TclXML

<lang tcl>package require dom set xml [dom::DOMImplementation create] set root [dom::document createElement $xml Students] foreach name {April Bob Chad Dave Emily} {

   set element [dom::document createElement $root Student]
   dom::element setAttribute $element Name $name

} dom::DOMImplementation serialize $xml</lang>

<?xml version='1.0'?>
<!DOCTYPE Students>
<Students><Student Name="April"/><Student Name="Bob"/><Student Name="Chad"/><Student Name="Dave"/><Student Name="Emily"/></Students>

Visual Basic .NET

This example may be incorrect due to a recent change in the task requirements or a lack of testing. Please verify it and remove this message. If the example does not match the requirements or does not work, replace this message with Template:incorrect or fix the code yourself.

<lang vbnet>Dim names As String() = New String() {"April", "Bob", "Chad", "Dave", "Emily"}

Dim xml = <Students>

             <%= From s In names Select <Student Name=<%= s %>/> %>
         </Students>

Console.WriteLine(xml)</lang>