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https://issues.apache.org/jira/browse/CAMEL-24802?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18116487#comment-18116487
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Claus Ibsen commented on CAMEL-24802:
-------------------------------------
Merged in https://github.com/apache/camel/pull/26565 (commit
1bff11f8c92cab7b1a03c17e6e374708d6d3ed42).
_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
> Fix For: 4.23.0
>
>
> 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}} - {{& < > " '}}
> * {{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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