42 lines
726 B
Bash
Executable file
42 lines
726 B
Bash
Executable file
# SPDX-License-Identifier: GPL-2.0
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# Copyright (c) 2020 Mediatek Inc.
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#!/bin/bash
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# rel_path <to> <from>
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# Generate relative directory path to reach directory <to> from <from>
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to=${1}
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from=${2}
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path=
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stem=
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prevstem=
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if [ ! -n "${to}" ]; then
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exit 1
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fi
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if [ ! -n "${from}" ]; then
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exit 1
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fi
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if [ ! -d "${to}" ]; then
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mkdir -p ${to}
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fi
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to=$(readlink -e "${to}")
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from=$(readlink -e "${from}")
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if [ ! -n "${to}" ]; then
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exit 1
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fi
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if [ ! -n "${from}" ]; then
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exit 1
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fi
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stem=${from}/
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while [ "${to#$stem}" == "${to}" -a "${stem}" != "${prevstem}" ]; do
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prevstem=${stem}
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stem=$(readlink -e "${stem}/..")
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if [ "${stem%/}" == "${stem}" ]; then
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stem=${stem}/
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fi
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path=${path}../
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done
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echo ${path}${to#$stem}
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