Script for conversion of SVN externals to Git submodules

marcows · April 12, 2023, 10:14pm

While searching for a way to report a SubGit bug I found this support forum and noticed that there are still other people in the need for conversion of SVN externals to Git submodules.

Here it is…
Based on the fabulous git-filter-repo.
Uses .gitsvnextmodules created by SubGit (or SVN Mirror).

github.com

newren/git-filter-repo/blob/main/contrib/filter-repo-demos/convert-svnexternals

#!/usr/bin/env python3

"""
This is a program that will insert Git submodules according to SVN externals
definitions (svn:externals properties) from the original Subversion repository
throughout the history.

Information about the externals is obtained from the ".gitsvnextmodules" file
created during SVN-to-Git conversion by SubGit (https://subgit.com/). Its
config option "translate.externals=true" had to be used therefore.

Actual modifications:
- Insert gitlinks (mode 160000) into the tree.
- Add .gitmodules file with relevant sections.
- Remove sections converted to submodules from .gitsvnextmodules file
  and delete it if empty.

.gitsvnextmodules example:
[submodule "somedir/extdir"]
	path = somedir/extdir

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marcows · April 12, 2023, 10:24pm

FYI:
@svnmirror (How are svn externals handled during the translation of SVN repo to GIT?)
@David_Munro (Subgit install call causes an infinite loop)