64 lines
951 B
Bash
Executable File
64 lines
951 B
Bash
Executable File
#!/bin/sh
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case "$1" in
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/*)
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left="${1#/}"
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;;
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*)
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left="${PWD#/}/$1"
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;;
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esac
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result=""
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while [ -n "$left" ]; do
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case "$left" in
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*/*)
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# Snip one path segment off $left
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seg="${left%%/*}"
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left="${left#*/}"
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;;
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*)
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# Last path segment already
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seg="$left"
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left=""
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;;
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esac
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case "$seg" in
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.)
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# /foo/a -> . will become /foo
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result="${result%/*}"
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continue
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;;
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..)
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# /foo/bar/a -> .. will become /foo
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result="${result%/*/*}"
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continue
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;;
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esac
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result="$result/$seg"
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target="$(readlink "$result")"
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case "$target" in
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/*)
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# Absolute symlink. Resets buildup of $result
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left="${target}/${left}"
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result=""
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;;
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'')
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# Readlink failed, its not a symlink
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;;
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*)
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# Relative symlink: Keep $result, its the symlink base
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left="${target}/${left}"
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;;
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esac
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# Make sure $left never starts with a slash
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left="${left#/}"
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done
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echo "$result"
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