[Solved] Format error while opening presentation

[pmensik]

Hello,

I've been creating a presentation for a couple of hours and saving the progress when doing so. However, when I closed the file and tried to open it again, I am getting a format error (please see the attached screenshot). I tried to unzip the file and look for the error myself but I don't see anything obvious there unfortunately. Thanks for any help, I am having the presentation tomorrow
I am not allowed to attach big files so here's the link for download in case anyone wants to help https://easyupload.io/vlzg0f

Edit: 2022-08-06 link above is broken -- MrProgrammer, forum moderator

open_office.png (32 KiB) Viewed 3913 times

Thanks a lot again!

[MrProgrammer]

Hi, and welcome to the forum.

I tried to unzip the file and look for the error myself but I don't see anything obvious there unfortunately.

File content.xml contains draw:mirror-vertical="false" and then shortly thereafter draw:mirror-vertical="true". That is a conflict since an attribute cannot be specified twice. This duplication occurs in two places. Remove either draw:mirror-vertical="false" or draw:mirror-vertical="true". I don't know which setting is correct. Removing either should allow you to open the file so you can examine the layout. The commands I used were:

cd "LocationOfBadFile"                         # Set current directory
file='polkadot_prednaska.odp'                  # File to fix in current directory
xml=content.xml                                # Component to fix
bad='draw:mirror-vertical="true"'              # Attribute to remove
cp "$file" MrProgrammer.odp                    # Make a copy of the file
unzip -p MrProgrammer.odp $xml >bad.xml        # Extract content.xml
sed -e "s/$bad/ /g" bad.xml >$xml              # Fix it
zip -m MrProgrammer.odp $xml                   # Put repaired file back in presentation
rm bad.xml                                     # Remove extracted content

The repaired file is MrProgrammer.odp. I did the edit with sed but you could just use your favorite text editor.

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[pmensik]

You saved my day, thank you very much!