Allow to reindent a file, inline

reindent.sh

#!/bin/sh

#   -------------------------------------------------------------
#   Reindent a file from x to y spaces
#   - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
#   Project:        Nasqueron
#   License:        BSD-2-Clause
#   Example:        reindent 2 4 HelloWorld.vue
#   -------------------------------------------------------------

set -e

#   -------------------------------------------------------------
#   Parse arguments
#   - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

if [ $# -lt 3 ]; then
    echo "Usage: $(basename $0) <current> <expected> <file>" >&2
    exit 1
fi

CURRENT_SPACES=$1
EXPECTED_SPACES=$2
FILENAME=$3

#   -------------------------------------------------------------
#   Reindent
#   - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

TMP_FILE=$(mktemp -t reindent)

unexpand -t $CURRENT_SPACES $FILENAME > $TMP_FILE
expand -t $EXPECTED_SPACES $TMP_FILE > $FILENAME

rm $TMP_FILE