9d7c01f810
Replace the BSD license header with the SPDX tag for scripting files with only an Intel copyright on them. Signed-off-by: Bruce Richardson <bruce.richardson@intel.com>
77 lines
1.3 KiB
Bash
Executable file
77 lines
1.3 KiB
Bash
Executable file
#!/bin/sh
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# SPDX-License-Identifier: BSD-3-Clause
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# Copyright(c) 2010-2014 Intel Corporation
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#
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# print the relative path of $1 from $2 directory
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# $1 and $2 MUST be absolute paths
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#
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if [ $# -ne 2 ]; then
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echo "Bad arguments"
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echo "Usage:"
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echo " $0 path1 path2"
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exit 1
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fi
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# get the real absolute path, derefencing symlinks
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ABS1="$(dirname $(readlink -f $1))/$(basename $1)"
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ABS2=$(readlink -f $2)
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# remove leading slash
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REL1=${ABS1#/}
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REL2=${ABS2#/}
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left1=${REL1%%/*}
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right1=${REL1#*/}
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prev_right1=$REL1
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prev_left1=
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left2=${REL2%%/*}
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right2=${REL2#*/}
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prev_right2=$REL2
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prev_left2=
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prefix=
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while [ "${right1}" != "" -a "${right2}" != "" ]; do
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if [ "$left1" != "$left2" ]; then
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break
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fi
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prev_left1=$left1
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left1=$left1/${right1%%/*}
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prev_right1=$right1
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right1=${prev_right1#*/}
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if [ "$right1" = "$prev_right1" ]; then
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right1=""
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fi
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prev_left2=$left2
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left2=$left2/${right2%%/*}
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prev_right2=$right2
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right2=${prev_right2#*/}
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if [ "$right2" = "$prev_right2" ]; then
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right2=""
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fi
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done
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if [ "${left1}" != "${left2}" ]; then
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right2=${prev_right2}
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right1=${prev_right1}
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fi
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while [ "${right2}" != "" ]; do
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prefix=${prefix}../
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prev_right2=$right2
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right2=${right2#*/}
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if [ "$right2" = "$prev_right2" ]; then
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right2=""
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fi
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done
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echo ${prefix}${right1}
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exit 0
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