[
https://issues.apache.org/jira/browse/LANG-482?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Henri Yandell updated LANG-482:
-------------------------------
Fix Version/s: (was: 3.0)
3.x
Moving to 3.x for now.
> Enhance StrSubstitutor to support nested ${var-${subvr}} expansion
> ------------------------------------------------------------------
>
> Key: LANG-482
> URL: https://issues.apache.org/jira/browse/LANG-482
> Project: Commons Lang
> Issue Type: Improvement
> Components: lang.text.*
> Reporter: Rob Walker
> Priority: Minor
> Fix For: 3.x
>
> Attachments: StrSubstitutor.java.nested.patch
>
>
> t would be really handy of StrSubstitutor could support nested variable
> interpolation:
> org.osgi.framework.system.packages=org.osgi.framework; version=1.4.0, \
> org.osgi.service.packageadmin; version=1.2.0, \
> org.osgi.service.startlevel; version=1.1.0, \
> org.osgi.service.url; version=1.0.0, \
> org.osgi.util.tracker; version=1.3.3 \
> ${jre-${java.specification.version}}
> The process being to expand innermost variable references first and work
> outwards - this allows for very advance config, such as the above, which can
> dynamically detect the Java version and expand a JRE version specific
> property into the property being defined.
> Looking at the implementation, it seems it might be a fairly straightforward
> enhancement to:
> private int substitute(StrBuilder buf, int offset, int length, List
> priorVariables)
> The code already has the cyclic map in place.
> I already have code that achieves this within Apache Felix, so I will see if
> I can retro-fit a similar model to the above and if so submit a patch.
--
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.
