JDK7's new I/O library will have support for accessing a zip/jar file just like a normal filesystem. Until that's released, I believe Dave is right that you have to unzip/update/rezip.
Steve On Jul 11, 2011, at 7:53 PM, Dave King wrote: > Hey Olivier the last time I looked the Java zip code could not update > a zip, so I think that's the limitation. If your input is an existing > zip on one file you want to change you need to unzip update rezip and > overwrite. > > - Peace > Dave > > > On Mon, Jul 11, 2011 at 6:59 PM, Olivier Lefevre <[email protected]> wrote: >> Peter, using this method you end up with two copies of the updated files >> inside the jar if they were already there, which is not how "jar u" is >> supposed to work! I didn't know that was possible but that is clearly >> never a desirable thing. I have attached a script that demonstrates this >> behaviour, create one or more *.txt files in the root directory, run the >> zip2 task and do 'unzip -l test3-upd.zip'. A similar test for jar tasks >> would yield similar results. >> >> Moreover it seems that "from zipTree" expands the archive in a temp dir, >> which is wasteful (AFAIK neither jar nor zip do that when updating a file). >> >> So, is there any way to perform a zip/jar update *correctly* (i.e., without >> creating duplicates) and in-place (i.e., without temporary expansion) >> using the Gradle DSL? >> >> On 3/3/2011 3:18 PM, Peter Niederwieser wrote: >>> >>> richardm wrote: >>>> >>>> However, my questions still stands, can you update a JAR using the Gradle >>>> DSL, or is using the Ant task the only way? >>>> >>> >>> Gradle's file handling capabilities make this kind of task easy. For >>> example, to add file "some_file.txt" to the META-INF directory of the >>> original Jar: >>> >>> task enrichedJar(type: Jar, dependsOn: "jar") { >>> appendix = "enriched" >>> from zipTree(jar.archivePath) // add original content >>> from(file("some_file.txt")) { // add new content >>> into "META-INF" >>> } >>> } >> >> --------------------------------------------------------------------- >> To unsubscribe from this list, please visit: >> >> http://xircles.codehaus.org/manage_email >> >> > > --------------------------------------------------------------------- > To unsubscribe from this list, please visit: > > http://xircles.codehaus.org/manage_email > > --------------------------------------------------------------------- To unsubscribe from this list, please visit: http://xircles.codehaus.org/manage_email
