Clean superfluous files out of a Git repo.

clean-git-repo.sh

#!/bin/sh
#/ Usage: script/clean-git-test-fixture <path.git>
set -e

path="${1%/}"

# bail out if path not specified
if [ -z "$path" ]
    then
    echo "$(basename $0): path not specified" 1>&2
    exit 1
fi

# check path ends in .git
if ! echo "$path" | grep -q '.git$'
    then
    echo "$(basename $0): $path is not a bare repository path" 1>&2
    exit 1
fi

# make sure the repo we're cleaning already exists.
if ! [ -d "$path" ]
    then
    echo "$(basename $0): $path does not exist"
    exit 1
fi

# all the superfluous git file names
# note: in most cases, it would be fine to just delete the hooks folder, but
# some tests rely on real hooks, so just delete the sample hooks.
superfluous_git_files="
    COMMIT_EDITMSG
    hooks/applypatch-msg.sample
    hooks/commit-msg.sample
    hooks/post-update.sample
    hooks/pre-applypatch.sample
    hooks/pre-commit.sample
    hooks/pre-rebase.sample
    hooks/prepare-commit-msg.sample
    hooks/update.sample
    index
    info/exclude
"

for filename in $superfluous_git_files
do
    filepath="$path/$filename"

    if [ -e "$filepath" ]
        then
        if [ -d "$filepath" ]
            then
            # If the thing at $filepath is a directory, delete it recursively.
            rm -r "$filepath"
            echo "Deleted dir  at $filepath"
        else
            # If the thing at $filepath is a file, delete it the normal way.
            rm "$filepath"
            echo "Deleted file at $filepath"
        fi
    else
        # If there's nothing at $filepath, still echo something.
        echo "Skipped nonexistent file at $filepath"
    fi
done