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571f510ee4
(based on cipherCOM's repo commit d3d8934) Signed-off-by: VladimirMangos <vladimir@getmangos.com>
99 lines
2.5 KiB
Bash
Executable file
99 lines
2.5 KiB
Bash
Executable file
#!/bin/sh
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# This script assumes it is being run by bash
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# ======= needed functions ======
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# abspath relpath curentpath
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abspath ()
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{
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# treat "./" as a special case
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if expr "$1" : '\./' >/dev/null; then
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b=`echo $1 | sed 's@\./@@'`
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echo $2/$b
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return 0
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fi
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b=$1
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a=$2
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# for each "../" we remove one directory from the current path
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# and leading "../" from the relative path
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# until we have the unique part in b and the abs prefix in a
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while expr "$b" : '\.\./' >/dev/null
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do
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b=`echo $b | sed 's@\.\./@@'`
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a=`echo $a | sed 's@/[^/]*$@@'`
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done
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# return the completed absolute path
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echo $a/$b
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}
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# relpath abspath curentpath
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relpath ()
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{
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# take "/" off beginning
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a=`echo $1 | sed 's@^/@@'`
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# take "/" off beginning and add to end
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b=`echo $2 | sed 's@^/@@;s@$@/@'`
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while true
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do
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if [ "$b" = "" ]; then
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break;
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fi
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a1=`echo $a | sed 's@\([^/]*\)/.*@\1@'`
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b1=`echo $b | sed 's@\([^/]*\)/.*@\1@'`
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if [ "$a1" != "$b1" ]; then
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break;
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fi
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a=`echo $a | sed 's@[^/]*/@@'`
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b=`echo $b | sed 's@[^/]*/@@'`
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done
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# a now has the unique part of the path
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c=""
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# c will have the required number of "../"'s
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while [ "$b" != "" ]
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do
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c="../$c"
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b=`echo $b | sed 's@[^/]*/@@'`
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done
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# return the completed relative path
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echo "$c$a"
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}
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# ====== MAIN ======
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# Assume any relative path passed in is relative to the current directory
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# Given $1 is a path to the source file
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# Given $2 is a path of the link to be created
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# Create a link that has the relative path to the source file
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# That is, $1 converted relative to $2
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# Check if $1 is absolute or already relative
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#echo add_rel_link.sh $1 $2
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if expr "$1" : '\/' >/dev/null; then
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# The source path is absolute, this is the expected case
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# Check if $2 is absolute or relative
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if expr "$2" : '\/' >/dev/null; then
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# The link path is already absolute, so just use it
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lpath=$2
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else
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# The link path is relative, this is the expected case
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# WARNING: don't use $PWD here, it won't work right
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# WARNING: pwd may be a shell alias. Use /bin/pwd.
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cur=`/bin/pwd`
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lpath=`abspath $2 $cur`
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fi
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# take name off the end of the dest
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ldir=`echo $lpath | sed 's@/[^/]*$@@'`
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# If the original path and the ldir do not originate in the same
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# directory tree, we should just use absolute paths
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if [ "`echo $1 | cut -d/ -f2`" != "`echo $ldir | cut -d/ -f2`" ]; then
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spath=$1
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else
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spath=`relpath $1 $ldir`
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fi
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# use the completed relative path and the given destignation path
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echo ln -s $spath $2
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ln -s $spath $2
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else
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# The source path is already relative, so just use it
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echo ln -s $1 $2
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ln -s $1 $2
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fi
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