JPlatform URL Media template JSP allowing GitHub Gist URL to be inserted and displayed in Jalios JPlatform

jplatform-gist.properties

# 1. Copy JSP in your JPlatform webapp
# 2. Declare this JPlatform URL media template with the following properties (adapte th JSP path) :

# GitHub Gist
media.template.default.URL.github-gist.enabled:   true
media.template.default.URL.github-gist.regex:     ^(?:https?:)?//gist.github.com/([A-Za-z\\d](?:[A-Za-z\\d]|-(?=[A-Za-z\\d])){0,38})/([0-9A-Za-z]+).*
media.template.default.URL.github-gist.jsp:       /jcore/media/url/mediaTemplateGitHubGist.jsp

mediaTemplateGitHubGist.jsp

<%--
  @Summary: Template used to display a GitHub Gist
--%><%@ page import="java.util.regex.Matcher" %><%
%><%@ page import="java.util.regex.Pattern" %><%
%><%@ include file='/jcore/doInitPage.jspf' %><%
%><%@ include file='/jcore/media/mediaTemplateInit.jspf' %><%
  
  if (Util.isEmpty(url)){
    return;
  }
  
  String gistRegex = channel.getProperty("media.template.default.URL.github-gist.regex", "");
  Pattern gistPattern = Pattern.compile(gistRegex, Pattern.CASE_INSENSITIVE);
  Matcher matcher = gistPattern.matcher(url);
  if (!matcher.matches()) {
    return;
  }

  String gistUserName = matcher.group(1);
  String gistId = matcher.group(2);
  if (Util.isEmpty(gistUserName) || Util.isEmpty(gistId)){
    return;
  }
  
  String cssClass = encodeForHTMLAttribute(getUntrustedStringParameter("class", "embed-responsive-16by9"));
  String cssStyle = encodeForHTMLAttribute(getUntrustedStringParameter("style", ""));
  
  cssClass = cssClass != null ? "class=\"github-gist embed-responsive "+cssClass+"\""   : "class=\"github-gist embed-responsive embed-responsive-16by9\"";
  cssStyle = cssStyle != null ? "style=\""+cssStyle+"\"" : "";
  
%>
<div <%= cssClass %> <%= cssStyle %>>
 <iframe class="embed-responsive-item"
    src="https://gist.github.com/<%= encodeForURL(gistUserName) %>/<%= encodeForURL(gistId) %>.pibb"
    frameborder="0"
    allowfullscreen></iframe>
</div>