Created
May 3, 2012 22:13
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Example output mapping function for Presto
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| <?php | |
| // NOTE that responses are automatically generated by Presto (this example simulates the call as a demonstration) | |
| // 1. Create new Response (faking $ctx) | |
| $r = new Response((object) array( 'res' => 'htm' ) ); // htm intentional, tests type matching | |
| // 2. Add a new type handler, with a custom mapping (anon fn) | |
| Response::add_type_handler('.*\/htm.*', encode_html, function($k, &$n, &$a, $d) { | |
| static $parents = array(); | |
| static $at = 0; // current depth | |
| // remap node name | |
| switch ($k) { | |
| case 'chapters': | |
| $k = 'body'; break; | |
| case 'title': | |
| $k = 'h'.($d-1); break; | |
| case 'ideas': | |
| $k = 'ul'; break; | |
| case 'li': | |
| if (end($parents) === 'body') { | |
| $k = 'section'; | |
| // also pull out the ID as an attribute | |
| if (array_key_exists('id', $n)) { | |
| $a = " id='{$n['id']}'"; | |
| unset($n['id']); | |
| } | |
| } | |
| break; | |
| } | |
| // track parent nodes | |
| if ($at > $d || empty($parents)) $parents[] = $k; | |
| elseif ($at != $d) array_pop($p); | |
| if ($d != $at) $at = $d; | |
| return $k; | |
| } ); | |
| // 3. Return the transformed DOM to the client | |
| $r->ok($dom); | |
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| {"chapters" : [ | |
| {"title": "This is chapter 1", | |
| "id": 101, | |
| "content" : "This is some text", | |
| "ideas" : ["This is a list of things", "And another item"] | |
| }, | |
| {"title": "This is chapter 2", | |
| "id": 102, | |
| "content" : "This is some more text", | |
| "ideas" : ["This is a list of things", "And another item"] | |
| } | |
| ] } |
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| <body> | |
| <section id='101'> | |
| <h1> | |
| This is chapter 1 | |
| </h1> | |
| <content> | |
| This is some text | |
| </content> | |
| <ul> | |
| <section> | |
| This is a list of things | |
| </section> | |
| <section> | |
| And another item | |
| </section> | |
| </ul> | |
| </section> | |
| <section id='102'> | |
| <h1> | |
| This is chapter 2 | |
| </h1> | |
| <content> | |
| This is some more text | |
| </content> | |
| <ul> | |
| <li> | |
| This is a list of things | |
| </li> | |
| <li> | |
| And another item | |
| </li> | |
| </ul> | |
| </section> | |
| </body> |
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