[jira] [Commented] (CAMEL-24802) camel-core - simple: add escape function for html/xml/json/sql/url special characters

["Claus Ibsen (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/CAMEL-24802?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18116468#comment-18116468 ] 

Claus Ibsen commented on CAMEL-24802:
-------------------------------------

PR: https://github.com/apache/camel/pull/26565

_Claude Code on behalf of davsclaus_

> camel-core - simple: add escape function for html/xml/json/sql/url special characters
> -------------------------------------------------------------------------------------
>
>                 Key: CAMEL-24802
>                 URL: https://issues.apache.org/jira/browse/CAMEL-24802
>             Project: Camel
>          Issue Type: New Feature
>          Components: camel-core
>            Reporter: Claus Ibsen
>            Assignee: Claus Ibsen
>            Priority: Major
>
> A user on Zulip needed to escape special characters (& < > quotes etc.) in message data before feeding it to a Velocity template, and observed that the simple language has no function for this. Today you either chain multiple {{replace(...)}} calls, write a custom bean, or resort to {{${bean:...}}} with a helper class such as Velocity's EscapeTool or commons-text StringEscapeUtils.
> Simple already has {{htmlDecode(exp)}} and {{htmlClean(exp)}} but nothing for the encoding/escaping direction.
> Proposal: add an {{escape(kind,exp)}} function (or {{escapeAs(...)}} / individual functions) covering the common kinds:
> * {{html}} - {{&amp; &lt; &gt; &quot; &#39;}}
> * {{xml}} - the five XML entities
> * {{json}} - backslash-escape quotes, backslashes and control characters
> * {{sql}} - double single quotes
> * {{url}} - percent-encoding (application/x-www-form-urlencoded)
> For example:
> {code}
> ${escape(html, ${body})}
> ${escape(xml, ${header.item})}
> {code}
> The {{exp}} argument should be optional and default to the message body, consistent with the other string functions. The implementation should live in camel-core-languages using JDK-only code (no new dependency), and the function must be documented in simple-functions.adoc and picked up by the TUI/MCP catalog function metadata via the {{@Metadata}} annotation in {{SimpleConstants}}.
> See also the related velocity documentation update that shows how to use Velocity's EscapeTool inside a template as the template-side alternative.



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