5 # Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
8 # Redistribution and use in source and binary forms, with or without
9 # modification, are permitted provided that the following conditions
12 # * Redistributions of source code must retain the above copyright
13 # notice, this list of conditions and the following disclaimer.
14 # * Redistributions in binary form must reproduce the above copyright
15 # notice, this list of conditions and the following disclaimer in
16 # the documentation and/or other materials provided with the
18 # * Neither the name of Intel Corporation nor the names of its
19 # contributors may be used to endorse or promote products derived
20 # from this software without specific prior written permission.
22 # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
23 # "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
24 # LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
25 # A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
26 # OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
27 # SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
28 # LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
29 # DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
30 # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
31 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
32 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
35 # print the relative path of $1 from $2 directory
36 # $1 and $2 MUST be absolute paths
42 echo " $0 path1 path2"
46 # get the real absolute path, derefencing symlinks
47 ABS1=$(readlink -f $1)
48 ABS2=$(readlink -f $2)
50 # remove leading slash
66 while [ "${right1}" != "" -a "${right2}" != "" ]; do
68 if [ "$left1" != "$left2" ]; then
73 left1=$left1/${right1%%/*}
75 right1=${prev_right1#*/}
76 if [ "$right1" = "$prev_right1" ]; then
81 left2=$left2/${right2%%/*}
83 right2=${prev_right2#*/}
84 if [ "$right2" = "$prev_right2" ]; then
89 if [ "${left1}" != "${left2}" ]; then
94 while [ "${right2}" != "" ]; do
98 if [ "$right2" = "$prev_right2" ]; then
103 echo ${prefix}${right1}