Since JDK 1.2, package identification version in a JAR file can be included in
the manifest in order to be able to answer to this question : "which version of
the tools is this damn' JAR file I have here ?"
(see JDK's
docs/guide/versioning/spec/VersioningSpecification.html#PackageVersionSpecification)
Here is my try to have this info in ant.jar :
First, I modified src/etc/Manifest :
----------------------
Manifest-Version: 1.0
Main-Class: org.apache.tools.ant.Main
Name: org/apache/tools/ant/
Specification-Title: Jakarta Ant
Specification-Version: 1.3
Specification-Vendor: Apache
Implementation-Title: org.apache.tools.ant
Implementation-Version: @VERSION@
Implementation-Vendor: Apache @[EMAIL PROTECTED]@TIME@
----------------------------
Then I modified build.xml's jar task
<filter token="VERSION" value="${version}" />
<filter token="DATE" value="${TODAY}" />
<filter token="TIME" value="${TSTAMP}" />
<copy todir="${build.classes}"
file="${manifest}"
overwrite="true"
filtering="on" />
<jar jarfile="${build.lib}/${name}.jar"
basedir="${build.classes}"
manifest="${build.classes}/manifest">
<exclude name="org/apache/tools/ant/taskdefs/optional/**" />
<exclude name="manifest" />
</jar>
I'm not sure the way I did that is good, but I really think this info should be
included in every JAR file produced in every project.
Does anybody have a better idea for doing this ?
Is anybody interested in doing this ?
Herve BOUTEMY
