pst

#!/bin/sh

usage() {
    cat - <<EOF
Usage: pst [-n|--dry-run|--abort] [<target>]

    -n|--dry-run: List file operations but don't execute.
    --abort: List file operations and abort them all.
EOF
}

LST=~/.cp-mv-paste
TARGET="$PWD"
TARGET_SET=
DRY_RUN=

list() {
    if [ -f "$LST/pending-cp" ]; then
        xargs -0 -a "$LST/pending-cp" -n 1 -r -I '{}' printf 'cp -R %q %q\n' '{}' "$TARGET"
    fi
    if [ -f "$LST/pending-mv" ]; then
        xargs -0 -a "$LST/pending-mv" -n 1 -r -I '{}' printf 'mv    %q %q\n' '{}' "$TARGET"
    fi
}

while [ "$#" -gt 0 ]; do
    case "$1" in
        -n | --dry-run)
            DRY_RUN="YES"
            ;;
        --abort)
            list
            rm -f "$LST/pending-cp"
            rm -f "$LST/pending-mv"
            ;;
        *)
            if [ -z "$TARGET_SET" ]; then
                TARGET="$(realpath "$1")"
                TARGET_SET="YES"
            else
                usage
                exit 1
            fi
            ;;
    esac
    shift
done

list

if [ ! -z "$DRY_RUN" ]; then
    exit 0
fi

if [ -f "$LST/pending-cp" ]; then
    xargs -0 -a "$LST/pending-cp" -n 1 -r -I '{}' cp -R '{}' "$TARGET"
    rm -f "$LST/pending-cp"
fi

if [ -f "$LST/pending-mv" ]; then
    xargs -0 -a "$LST/pending-mv" -n 1 -r -I '{}' mv    '{}' "$TARGET"
    rm -f "$LST/pending-mv"
fi