This is a set of tools for Dragon Age: Origins modding.
This package can patch language-specific .dlg, .plo, .cut and .tlk files, extract and build .erf files, and view the contents of files in GFF and ERF format.
I made this to fix the text lines of .dlg (and other) files, that once edited in the original Dragon Age Toolset, from not being language-specific, got replaced with their english version.

It just removes the reference to the english text.
More specifically, it replaces the string offset with 0.
The main program extracts the contents of an .erf file, then, for each .dlg, .plo and .cut file, looks for strings, edits the string offset to 0 (without deleting the orphaned data, since the size difference is minimal), and after doing that, builds the .erf file again.

The program is pretty slow at patching files, because all .dlg, .plo and .cut files have to be parsed.
When patching all of the QUDAO files extracted from the .erf file (242 .dlg files), it can need as long as 10 minutes to process them: it depends on the number of cores your CPU has got, feel free to report the execution time in the related issue.

pip3 install construct
git clone https://github.com/humhue/DAOTools.git
python3 DAOTools old.erf patched.erf

Disclaimer
I'm not the author of QUDAO, available at https://www.nexusmods.com/dragonage/mods/4689, whose author is Paul Escalona (aka Qwinn).
I just created this toolset and made a QUDAO patch to make most QUDAO texts non-language-specific and thus enjoyable by non-english speakers.

If you want, you can just download the patched files in the release section and install them, if you don't, follow the next steps.

First, set up this package as explained previously.
Then, download QUDAO at https://www.nexusmods.com/dragonage/mods/4689/?tab=files.
Extract the .zip file and the .dazip file (like a normal .zip)
Now browse to Contents/addins/qwinn_fixpack_3/module/data, you'll find a file named qwinn_fixpack_3_module.erf, that's the one we have to patch.
Assuming that we have this package installed, we can write in the path we did it the command:

python3 DAOTools qwinn_fixpack_3_module.erf qwinn_fixpack_3_module_patched.erf

After this, we can delete the original .erf in Contents/addins/qwinn_fixpack_3/module/data, replace it with the patched version, and change the name again to qwinn_fixpack_3_module.erf.
You now have to zip the Contents directory with the Manifest.xml file, and rename it QUDAO Fixpack v3 _5_patched.dazip or whatever you feel like. Now all you have to do is to install the .dazip file as you normally would.