stash for svn

svn-stash

#!/usr/bin/env bash
set -e

if [[ $(uname) == "Darwin" ]]; then
    stat_args="-f%m"
    date_args="-r "
elif [[ $(uname) == "Linux" ]]; then
    stat_args="-c %Y"
    date_args="-d @"
else
    echo "Unreachable"; exit 1
fi

stash_dir="$HOME/.svn-stash"

usage() {
    echo 'Usage: svn-stash [-h|--help|ls|list|pop] [--keep] [<rev>]'
    echo
    echo 'git stash for svn'
    echo
    echo 'Examples:'
    echo '    svn-stash                          Stash your changes'
    echo '    svn-stash my-changelist            Stash your changes with "my-changelist" name'
    echo '    svn-stash ls                       Show all stashes'
    echo '    svn-stash pop                      Apply last patch'
    echo '    svn-stash pop 2018-01-01           Apply patch named 2018-01-01'
    echo '    svn-stash pop --keep 2018-01-01    Apply patch named 2018-01-01 and don'\''t delete it'
    echo '    svn-stash files                    Show files in last patch'
    echo '    svn-stash files 2018-01-01         Show files in patch named 2018-01-01'
    echo '    svn-stash diff                     Print last patch'
    echo '    svn-stash diff 2018-01-01          Print patch named 2018-01-01'
    echo
}

stash() {
    echo "wat"
}

list() {
    if [[ ! -d ~/.svn-stash || -z "$(ls -A ~/.svn-stash)" ]]; then
        echo "No stashes found"
        exit 1
    fi

    res="Name§Mtime\n"

    for filename in "$stash_dir"/*; do
        res+="$(basename "$filename")§$(date $date_args"$(stat "${stat_args[@]}" "$filename")")\n"
    done

    echo -e "$res" | column -t -s §
}

stash() {
    if [[ -z "$1" ]]; then
        name="$(date "+%Y-%m-%d_%H:%M:%S")"
    else
        name="$1"
    fi

    if [[ -f "$name" ]]; then
        echo "Stash named \"$name\" already exists!"
        exit 1
    fi

    if ! svn st |grep -v "^?" > /dev/null; then
        echo "No changes detected"
        exit 1
    fi

    svn diff > "$stash_dir/$name"
    svn revert . -R && svn status |awk '{print "$2"}' |xargs rm -rf > /dev/null
    echo "Stashed as \"$name\""
}

pop() {
    keep=false
    name="$(_last_patch)"
    if [[ "$2" == "--keep" ]]; then
        keep=true
        if [[ -n "$3" ]]; then
            name="$3"
        fi
    elif [[ -n "$2" ]]; then
        name="$2"
    fi

    echo "Applying \"$name\""

    patch -p0 -i "$stash_dir/$name"

    if [[ "$keep" == false ]]; then
        rm "$stash_dir/$name"
    fi

    echo "Success!"
}

diff() {
    if [[ -z "$2" ]]; then
        name="$(_last_patch)"
    else
        name="$2"
    fi

    echo "Patch \"$name\":"
    echo

    if which colordiff > /dev/null; then
        cat "$stash_dir/$name" | colordiff
    else
        cat "$stash_dir/$name"
    fi
}

files() {
    if [[ -z "$2" ]]; then
        name="$(_last_patch)"
    else
        name="$2"
    fi

    echo "Patch \"$name\":"
    echo

    cat "$stash_dir/$name" | grep '+++' |perl -pe 's/\+\+\+ (.*)\t.*/\1/g'
}

_last_patch() {
    echo "$(ls -t "$stash_dir"|head -n 1)"
}

case "$1" in
    (-h|--help) usage; exit; ;;
    (ls|list) list; exit; ;;
    (pop) pop "$@"; exit; ;;
    (diff) diff "$@"; exit; ;;
    (files) files "$@"; exit; ;;
    (*) stash "$@"; exit; ;;
esac