From 8463281f6a6daec64a976693447c240f0d669f08 Mon Sep 17 00:00:00 2001
From: Zac Medico <zmedico@gentoo.org>
Date: Sun, 13 Jan 2019 15:11:40 -0800
Subject: misc-functions.sh: restore canonicalize func (bug 675284)

The canonicalize function is required by install-qa-check.d/05prefix.

Fixes: aa0a94198794 ("ecompress: Replace with implementation from portage[mgorny]")
Bug: https://bugs.gentoo.org/670484
Signed-off-by: Zac Medico <zmedico@gentoo.org>
---
 bin/misc-functions.sh | 34 ++++++++++++++++++++++++++++++++++
 1 file changed, 34 insertions(+)

(limited to 'bin/misc-functions.sh')

diff --git a/bin/misc-functions.sh b/bin/misc-functions.sh
index 5de26b44d..4f8a4112d 100755
--- a/bin/misc-functions.sh
+++ b/bin/misc-functions.sh
@@ -43,6 +43,40 @@ install_symlink_html_docs() {
 	fi
 }
 
+# replacement for "readlink -f" or "realpath"
+READLINK_F_WORKS=""
+canonicalize() {
+	if [[ -z ${READLINK_F_WORKS} ]] ; then
+		if [[ $(readlink -f -- /../ 2>/dev/null) == "/" ]] ; then
+			READLINK_F_WORKS=true
+		else
+			READLINK_F_WORKS=false
+		fi
+	fi
+	if ${READLINK_F_WORKS} ; then
+		readlink -f -- "$@"
+		return
+	fi
+
+	local f=$1 b n=10 wd=$(pwd)
+	while (( n-- > 0 )); do
+		while [[ ${f: -1} = / && ${#f} -gt 1 ]]; do
+			f=${f%/}
+		done
+		b=${f##*/}
+		cd "${f%"${b}"}" 2>/dev/null || break
+		if [[ ! -L ${b} ]]; then
+			f=$(pwd -P)
+			echo "${f%/}/${b}"
+			cd "${wd}"
+			return 0
+		fi
+		f=$(readlink "${b}")
+	done
+	cd "${wd}"
+	return 1
+}
+
 install_qa_check() {
 	local d f i qa_var x paths qa_checks=() checks_run=()
 	if ! ___eapi_has_prefix_variables; then
-- 
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