80 lines
1.7 KiB
Bash
Executable File
80 lines
1.7 KiB
Bash
Executable File
#!/bin/bash
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summary="$0 [options] <repo>"
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ref=main
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dst='.'
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nonempty_target=false
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use_home=false
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be_aggressive=false
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while getopts ":hr:d:NHa" option; do
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case $option in
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h) # display Help
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Help
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exit;;
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r) # branch or tag wanted
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ref="$OPTARG";;
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d) # destination of clone
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dst="$OPTARG";;
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N) # clone to a Non-empty target. Existing files will be overwritten
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nonempty_target="true";;
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H) # use real home dir
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use_home="false";;
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a) # use git clean with the aggressive option
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be_aggressive="true";;
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\?) # invalid option
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echo "Error: Invalid option here"
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exit;;
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esac
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done
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shift $((OPTIND-1))
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repo="$1"
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if [ -z "$repo" ] ; then
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exit "$0: Empty repo given\n$summary"
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fi
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if [ ! $use_home ] ; then
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set -a
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export HOME=/dev/null
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set +a
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fi
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mkdir -p "$dst"
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cd "$dst"
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if [ -d .git ] ; then
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git submodule update --init --recursive --force --depth=1 --remote
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git fetch --tags --depth=1 --prune --prune-tags --force origin $ref
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git reset --hard FETCH_HEAD
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git reflog expire --expire=now --all
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if "$be_aggressive" ; then
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git gc --prune=now --aggressive
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else
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git gc --prune=now
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fi
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# Preserve existing files in some cases
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if ! "$nonempty_target" ; then #we keep uncommitted files when in -N mode
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git clean -qfdx
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fi
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else
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clone_dst='.'
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# To override an existing dir, we need to clone elsewhere first
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if "$nonempty_target" ; then
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clone_dst="$(mktemp -d)"
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fi
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git clone -b "$ref" --recurse-submodules --shallow-submodules --depth 1 "$repo" "$clone_dst"
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# To override an existing dir, we then move everything to that dir
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if "$nonempty_target" ; then
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mv "$clone_dst/"{*,.*} .
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rmdir "$clone_dst"
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fi
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fi
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