Can't import the same file twice in Welcome window

[Sébastien Heymann]

Way to reproduce:
* Launch Gephi
* Open Les_Miserable.gexf from the Welcome window
* Open this window again and try to import the same file.

[Fatal Error] :1:1: Premature end of file.
java.lang.RuntimeException: java.lang.RuntimeException: java.lang.RuntimeException: Impossible to parse the given XML file
        at org.gephi.desktop.importer.DesktopImportControllerUI$5.run(DesktopImportControllerUI.java:189)
        at org.gephi.utils.longtask.api.LongTaskExecutor$RunningLongTask.run(LongTaskExecutor.java:228)
        at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:441)
        at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
        at java.util.concurrent.FutureTask.run(FutureTask.java:138)
        at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
        at java.lang.Thread.run(Thread.java:619)
Caused by: java.lang.RuntimeException: java.lang.RuntimeException: Impossible to parse the given XML file
        at org.gephi.io.importer.impl.ImportControllerImpl.importFile(ImportControllerImpl.java:132)
        at org.gephi.desktop.importer.DesktopImportControllerUI$5.run(DesktopImportControllerUI.java:183)
        ... 7 more
Caused by: java.lang.RuntimeException: Impossible to parse the given XML file
        at org.gephi.io.importer.api.ImportUtils.getXMLDocument(ImportUtils.java:96)
        at org.gephi.io.importer.plugin.file.ImporterGEXF.execute(ImporterGEXF.java:103)
        at org.gephi.io.importer.impl.ImportControllerImpl.importFile(ImportControllerImpl.java:113)
        at org.gephi.io.importer.impl.ImportControllerImpl.importFile(ImportControllerImpl.java:130)
        ... 8 more

[Christian Tominski (ct-informatik)]

The problem is that when the stream is read for the second time, it is at the EOF. A solution is to simply call stream.reset() before starting the import.

[Eduardo Ramos (eduramiba)]

Thanks for the patch, the fix is now commited.

[Sébastien Heymann (sebastien.heymann)]

I re-open this bug, as the fix is no longer valid in Gephi 0.7beta.

It is still a premature end of file.

[Sébastien Heymann (sebastien.heymann)]

Can't reproduce this bug again, it may have been solved recently on the fly...

[Christian Tominski (ct-informatik)]

I've checked again. The bug is solved indeed, the stream is reset to avoid EOF when reading a file for the second time.