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60 lines
1.5 KiB
Bash
60 lines
1.5 KiB
Bash
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#!/usr/bin/env bash
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#set -x
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# A (partial) 'realpath' replacement based on Bash functionality,
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# using 'readlink' in a bare form (should be compatible with non-GNU
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# 'readlink).
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#
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# For the original idea, see:
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# http://stackoverflow.com/questions/3572030/bash-script-absolute-path-with-osx#30267480
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#
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get_realpath()
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{
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local _READLINK="$(readlink "$1")"
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if [ -z ${_READLINK} ]; then
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echo "$1"
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return
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else
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# Note, a symbolic link could be either a link to a file or a
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# link to a path!
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# If is symbolic link to directory
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if [ -d ${_READLINK} ]; then
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pushd ${_READLINK}
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echo "${PWD}"
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popd
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return
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# If is symbolic link to a file
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else
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# Save depth of 'dirs' to be able to jump back were you
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# came from
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local _DIRSDEPTH=$(dirs | wc -l)
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local _LASTBASENAME=$(basename ${_READLINK})
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pushd $(dirname $1) >/dev/null
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_READLINK=$(readlink $(basename "$1"))
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while [ -n "${_READLINK}" ]; do
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pushd $(dirname "${_READLINK}" ) >/dev/null
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_READLINK=$(readlink $(basename "${_READLINK}"))
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done
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_REALPATH=${PWD}/$(basename "${_LASTBASENAME}")
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fi
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fi
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# Get back to where you originally came from
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while [ "${_DIRSDEPTH}" != "$(dirs | wc -l)" ]; do
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popd
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done
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echo "${_REALPATH}"
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}
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# echo ""
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# echo "checking: $1"
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# echo "get_realpath(): $(get_realpath $1)"
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# echo "realpath: $(realpath $1)"
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