Code used to extract history from MLJBase

[giordano]

Similarly to https://github.com/JuliaLang/Statistics.jl/issues/1, this is the bash script I used to extract the history of the relevant files in MLJBase.jl:

#!/bin/bash

set -xeuf -o pipefail

JULIA_DEV_DIR="${HOME}/.julia/dev"
ORIGPACKAGE="MLJBase"
NEWPACKAGE="MLJOpenML"
BRANCH="dev"

git clone -b "${BRANCH}" --single-branch --no-tags "${JULIA_DEV_DIR}/${ORIGPACKAGE}" "${JULIA_DEV_DIR}/${NEWPACKAGE}"
cd "${JULIA_DEV_DIR}/${NEWPACKAGE}"

# https://ptc-it.de/move-files-to-new-repo-in-git/#
git filter-branch --prune-empty --index-filter \
    'git ls-tree -r -z --name-only --full-tree ${GIT_COMMIT} | \
     grep -z -v "LICENSE" | \
     grep -z -v ".gitignore" | \
     grep -z -v "src/openml.jl" | \
     grep -z -v "test/openml.jl" | \
     xargs -0 -r git rm --cached -r' -f -- --all

# https://stackoverflow.com/a/38420284/2442087
git filter-branch -f --prune-empty --parent-filter \
    'sed "s/-p //g" | xargs -r git show-branch --independent | sed "s/\</-p /g"'

# Squeeze repository size
# https://help.github.com/en/github/authenticating-to-github/removing-sensitive-data-from-a-repository
git for-each-ref --format="delete %(refname)" refs/original | git update-ref --stdin && \
    git reflog expire --all --expire=now && \
    git gc --prune=now --aggressive