mirror of
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49 lines
1.6 KiB
Bash
49 lines
1.6 KiB
Bash
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#!/bin/sh
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# Provide the canonicalize filename (physical filename with out any symlinks)
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# like the GNU version readlink with the -f option regardless of the version of
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# readlink (GNU or BSD).
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# This file is part of a set of unofficial pre-commit hooks available
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# at github.
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# Link: https://github.com/githubbrowser/Pre-commit-hooks
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# Contact: David Martin, david.martin.mailbox@googlemail.com
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###########################################################
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# There should be no need to change anything below this line.
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# Canonicalize by recursively following every symlink in every component of the
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# specified filename. This should reproduce the results of the GNU version of
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# readlink with the -f option.
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#
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# Reference: http://stackoverflow.com/questions/1055671/how-can-i-get-the-behavior-of-gnus-readlink-f-on-a-mac
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canonicalize_filename () {
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local target_file="$1"
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local physical_directory=""
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local result=""
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# Need to restore the working directory after work.
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local working_dir="`pwd`"
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cd -- "$(dirname -- "$target_file")"
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target_file="$(basename -- "$target_file")"
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# Iterate down a (possible) chain of symlinks
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while [ -L "$target_file" ]
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do
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target_file="$(readlink -- "$target_file")"
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cd -- "$(dirname -- "$target_file")"
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target_file="$(basename -- "$target_file")"
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done
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# Compute the canonicalized name by finding the physical path
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# for the directory we're in and appending the target file.
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physical_directory="`pwd -P`"
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result="$physical_directory/$target_file"
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# restore the working directory after work.
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cd -- "$working_dir"
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echo "$result"
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}
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