easy-scratch3/prune-gh-pages.sh
2019-12-31 17:48:57 +08:00

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#!/bin/bash
# gh-pages cleanup script: Switches to gh-pages branch, and removes all
# directories that aren't listed as remote branches
function deslash () {
# Recursively build a string of a directory's parents. E.g.,
# deslashed "feature/test/branch" returns feature/test feature
deslashed=$(dirname $1)
if [[ $deslashed =~ .*/.* ]]
then
echo $deslashed $(deslash $deslashed)
else
echo $deslashed
fi
}
repository=origin
if [[ $1 != "" ]]
then
repository=$1
fi
# Cache current branch
current=$(git rev-parse --abbrev-ref HEAD)
# Checkout most recent gh-pages
git fetch --force $repository gh-pages:gh-pages
git checkout gh-pages
git clean -fdx
# Make an array of directories to not delete, from the list of remote branches
branches=$(git ls-remote --refs --quiet $repository | awk '{print $2}' | sed -e 's/refs\/heads\///')
# Add parent directories of branches to the exclusion list (e.g. greenkeeper/)
for branch in $branches; do
if [[ $branch =~ .*/.* ]]; then
branches+=" $(deslash $branch)"
fi
done
# Dedupe all the greenkeepers (or other duplicate parent directories)
branches=$(echo "${branches[@]}" | tr ' ' '\n' | sort -u | tr '\n' ' ')
# Remove all directories that don't have corresponding branches
# It would be nice if we could exclude everything in .gitignore, but we're
# not on the branch with the .gitignore anymore... so we can't.
find . -type d \
\( \
-path ./.git -o \
-path ./node_modules \
$(printf " -o -path ./%s" $branches) \
\) -prune \
-o -mindepth 1 -type d \
-exec rm -rfv {} \;
# Push
git add -u
git commit -m "Remove stale directories"
git push $repository gh-pages
# Return to where we were
git checkout -f $current
exit