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<!DOCTYPE html> | ||
<html lang="en"> | ||
<head> | ||
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<meta charset="utf-8" /> | ||
<link rel="shortcut icon" href="favicon.png" /> | ||
<title>JSONP Highlight ▲ Prism plugins</title> | ||
<base href="../.." /> | ||
<link rel="stylesheet" href="style.css" /> | ||
<link rel="stylesheet" href="themes/prism.css" data-noprefix /> | ||
<script src="prefixfree.min.js"></script> | ||
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<script>var _gaq = [['_setAccount', 'UA-33746269-1'], ['_trackPageview']];</script> | ||
<script src="http://www.google-analytics.com/ga.js" async></script> | ||
</head> | ||
<body> | ||
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<header> | ||
<div class="intro" data-src="templates/header-plugins.html" data-type="text/html"></div> | ||
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<h2>JSONP Highlight</h2> | ||
<p>Fetch content with JSONP and highlight some interesting content (e.g. GitHub/Gists or Bitbucket API).</p> | ||
</header> | ||
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<section class="language-markup"> | ||
<h1>How to use</h1> | ||
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<p>Use the <code>data-jsonp</code> attribute on <code><pre></code> elements, like so:</p> | ||
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<pre><code><pre | ||
class="language-javascript" | ||
data-jsonp="https://github.com/gitapi/repos/leaverou/prism/contents/prism.js"> | ||
</pre></code></pre> | ||
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<p> | ||
Don't specifiy the <code>callback</code> query parameter in the URL; this will be added | ||
automatically. If the API expects a different callback parameter name however, use the | ||
<code>data-callback</code> parameter to specify the name: | ||
</p> | ||
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<pre><code><pre class="…" data-jsonp="…" data-callback="cb"></pre></code></pre> | ||
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<p> | ||
The next trick is of course actually extracting something from the JSONP response worth | ||
highlighting, which means processing the response to extract the interesting data. | ||
</p> | ||
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<p>The following JSONP APIs are automatically detected and parsed:</p> | ||
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<ul> | ||
<li><a href="https://developer.github.com/v3/repos/contents/#get-contents">GitHub</a></li> | ||
<li><a href="https://developer.github.com/v3/gists/#get-a-single-gist">GitHub Gists</a></li> | ||
<li><a href="https://confluence.atlassian.com/display/BITBUCKET/src+Resources#srcResources-GETrawcontentofanindividualfile">Bitbucket</a></li> | ||
</ul> | ||
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<p>If you need to do your own parsing, you can hook your your own data adapters in two ways:</p> | ||
<ol> | ||
<li> | ||
Supply the <code>data-adapter</code> parameter on the <code><pre></code> element. | ||
This must be the name of a globally defined function. | ||
The plugin will use <em>only</em> this adapter to parse the response. | ||
</li> | ||
<li> | ||
Register your adapter function by calling | ||
<code>Prism.plugins.jsonphighlight.registerAdapter(function(rsp) { … })</code>. | ||
It will be added to the list of inbuilt adapters and used if no other registered | ||
adapater (e.g. GitHub/Bitbucket) can parse the response. | ||
</li> | ||
</ol> | ||
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<p> | ||
In either case, the function must accept at least a single parameter (the JSONP response) and | ||
returns a string of the content to highlight. If your adapter cannot parse the response, you | ||
must return <code>null</code>. The DOM node that will contain the highlighted code will also | ||
be passed in as the second argument, incase you need to use it to query any extra information | ||
(maybe you wish to inspect the <code>class</code> or <code>data-jsonp</code> attributes to | ||
assist in parsing the response). | ||
</p> | ||
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<p> | ||
The following example demonstrates both methods of using a custom adapter, to simply return | ||
the stringyfied JSONP response (i.e highlight the entire JSONP data): | ||
</p> | ||
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<pre><code><!-- perhaps this is in a .js file elsewhere --> | ||
<script> | ||
function dump_json(rsp) { | ||
return "using dump_json: " + JSON.stringify(rsp,null,2); | ||
} | ||
</script> | ||
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<!-- … include prism.js … --> | ||
<script> | ||
Prism.plugins.jsonphighlight.registerAdapter(function(rsp) { | ||
return "using registerAdapter: " + JSON.stringify(rsp,null,2); | ||
}) | ||
</script> | ||
</code></pre> | ||
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<p>And later in your HTML:</p> | ||
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<pre><code><!-- using the data-adapter attribute --> | ||
<pre class="language-javascript" data-jsonp="…" data-adapter="dump_json"></pre> | ||
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<!-- using whatever data adapters are available --> | ||
<pre class="language-javascript" data-jsonp="…"></pre> | ||
</code></pre> | ||
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<p> | ||
Finally, unlike like the <a href="/plugins/file-highlight/index.html">File Highlight</a> | ||
plugin, you <em>do</em> need to supply the appropriate <code>class</code> with the language | ||
to highlight. This could have been auto-detected, but since you're not actually linking to | ||
a file it's not always possible (see below in the example using GitHub status). | ||
Furthermore, if you're linking to files with a <code>.xaml</code> extension for example, | ||
this plugin then needs to somehow map that to highlight as <code>markup</code>, which just | ||
means more bloat. You know what you're trying to highlight, just say so :) | ||
</p> | ||
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<h2>Caveat for Gists</h2> | ||
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<p> | ||
There's a bit of a catch with gists, as they can actually contain multiple files. | ||
There are two options to handle this: | ||
</p> | ||
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<ol> | ||
<li> | ||
If your gist only contains one file, you don't need to to anything; the one and only | ||
file will automatically be chosen and highlighted | ||
</li> | ||
<li> | ||
If your file contains multiple files, the first one will be chosen by default. | ||
However, you can supply the filename in the <code>data-filename</code> attribute, and | ||
this file will be highlighted instead: | ||
<pre><code><pre class="…" data-jsonp="…" data-filename="mydemo.js"></pre></code></pre> | ||
</li> | ||
</ol> | ||
</section> | ||
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<section> | ||
<h1>Examples</h1> | ||
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<p>The plugin’s JS code (from GitHub):</p> | ||
<pre class="lang-javascript" data-jsonp="https://github.com/gitapi/repos/PrismJS/prism/contents/plugins/jsonp-highlight/prism-jsonp-highlight.js"></pre> | ||
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<p>GitHub Gist (gist contains a single file, automatically selected):</p> | ||
<pre class="lang-javascript" data-jsonp="https://github.com/gitapi/gists/599a04c05a22f48a292d"></pre> | ||
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<p>GitHub Gist (gist contains a multiple files, file to load specified):</p> | ||
<pre class="lang-markup" data-jsonp="https://github.com/gitapi/gists/599a04c05a22f48a292d" data-filename="dabblet.html"></pre> | ||
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<p>Bitbucket API:</p> | ||
<pre class="lang-css" data-jsonp="https://bitbucket.org/!api/1.0/repositories/nauzilus/stylish/src/master/whirlpool/style.css"></pre> | ||
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<p>Custom adapter (JSON.stringify showing GitHub <a href="https://status.github.com/api/status.json">status</a>):</p> | ||
<pre class="lang-javascript" data-jsonp="https://status.github.com/api/status.json" data-adapter="dump_json"></pre> | ||
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<p>Registered adapter (as above, but without explicitly declaring the <code>data-adapter</code> attribute):</p> | ||
<pre class="lang-javascript" data-jsonp="https://status.github.com/api/status.json"></pre> | ||
</section> | ||
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<footer data-src="templates/footer.html" data-type="text/html"></footer> | ||
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<script>function dump_json(x) { return "using dump_json: " + JSON.stringify(x,null,2); }</script> | ||
<script src="prism.js"></script> | ||
<script src="plugins/jsonp-highlight/prism-jsonp-highlight.js"></script> | ||
<script>Prism.plugins.jsonphighlight.registerAdapter(function (x) { return "using registerAdapter: " + JSON.stringify(x,null,2); })</script> | ||
<script src="utopia.js"></script> | ||
<script src="components.js"></script> | ||
<script src="code.js"></script> | ||
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</body> | ||
</html> |
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