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https://issues.apache.org/jira/browse/FELIX-2366?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Guillaume Nodet resolved FELIX-2366.
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Assignee: Guillaume Nodet
Fix Version/s: fileinstall-3.1.0
Resolution: Fixed
Committing to https://svn.apache.org/repos/asf/felix/trunk ...
M
fileinstall/src/main/java/org/apache/felix/fileinstall/internal/Util.java
M
fileinstall/src/test/java/org/apache/felix/fileinstall/internal/UtilTest.java
Committed r949136
> Avoiding property substitution by escaping does not remove escape character
> ---------------------------------------------------------------------------
>
> Key: FELIX-2366
> URL: https://issues.apache.org/jira/browse/FELIX-2366
> Project: Felix
> Issue Type: Bug
> Components: File Install
> Affects Versions: fileinstall-3.0.0
> Reporter: Bengt Rodehav
> Assignee: Guillaume Nodet
> Fix For: fileinstall-3.1.0
>
>
> To avoid property substitution, an escape character was introduced in version
> 3.0.0 of File Install. The idea is that if I want to send the configuration
> value
> ${propkey}
> to my application without property substitution to take place, I can escape
> the START_DELIM (${) and STOP_DELIM (}) with a backslash as follows:
> $\{propkey\}
> However, when doing this the escape character is not removed from the string.
> The reason is as follows:
> The method of interest is substVars in class
> org.apache.felix.fileinstall.internal.Util. The logic tries to find matching
> DELIM_START (${) and DELIM_STOP (}). When you escape either of these (by
> specifying a backslash before "${" and/or "}"), the logic will never find
> matching DELIM_START and DELIM_STOP which causes the method to immediately
> return without performing property substitution. The logic at the end of the
> method (that removes the backslashes) is never reached.
> A workarount is to add an unnecessary property at the end of the value just
> to make sure some property substitution will take place since then the logic
> at the end of the substVars() method (that removes the escape character) will
> be reached. Thus, this works:
> $\{propkey\}${#}
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