81 lines
2.5 KiB
Bash
Executable File
81 lines
2.5 KiB
Bash
Executable File
#!/bin/bash
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Help(){
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echo "
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NAME
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git_update.sh
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SYNOPSIS
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git_update.sh [-h] [-r ref] [-d dest] [-H] [-a] repository
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OPTIONS
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-h prints the help.
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-r specifies the reference to the commit to be synchronized. It can be a tag or a branch. By default, it is the last commit of branch main.
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-d specifies the destination of the clone or update. Directory must be empty if a new clone is to be made.
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If the repository to be cloned is local, and its path is passed as a relative path, the path should start from the destination.
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To avoid mistakes, absolute paths are advised.
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-H allows the $HOME directory to be used by git_update.sh. By default, git_update.sh cannot access $HOME to prevent default behavior.
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If you need the global .gitconfig located in your $HOME to be used, you should supply the -H option.
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-a specifies that the aggressive option of the git garbage collection must be used. Only advised when changes happen in many different objects. Will slow down the execution.
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DESCRIPTION
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This script will replace the destination with the wanted commit of a git repository. The history is not preserved but tags are. Untracked files remain.
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The git commands have been chosen so as to minimize the memory and bandwidth usages."
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}
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#variables
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summary="$0 [options] <repo>"
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ref=main
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dst='.'
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use_home=false
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be_aggressive="false"
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while getopts ":hr:d:H" option; do
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case $option in
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h) # display Help
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Help
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exit;;
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r) # desired branch or tag
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ref="$OPTARG";;
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d) # destination of clone
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dst="$OPTARG";;
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H) # use real home dir
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use_home="true";;
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a) #use -a in git gc call
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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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echo "updating..."
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git fetch --tags --depth=1 --prune --prune-tags --force origin $ref
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git reset --hard --recurse-submodules FETCH_HEAD
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git submodule update --init --recursive --force --depth=1 --remote
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#garbage collection of anything unreachable at the moment
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git reflog expire --expire=now --all
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if "$be_aggressive" ; then
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git gc --prune=now --aggressive
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elsels
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git gc --prune=now
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fi
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else
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echo "cloning..."
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clone_dst='.'
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git clone -b "$ref" --recurse-submodules --shallow-submodules --depth 1 "$repo" "$clone_dst"
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fi
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