From 97812dcc9ddb1e043d8a67216692b214d62099a7 Mon Sep 17 00:00:00 2001
From: =?utf8?q?Micha=C5=82=20G=C3=B3rny?= <mgorny@gentoo.org>
Date: Tue, 14 Apr 2020 15:14:42 +0200
Subject: [PATCH] texlive-module.eclass: Optimize src_unpack()
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This goes a bit further than slyfox's work.  On my machine, it reduces
the post-unpack time from ~44m to ~13m.

Bug: https://bugs.gentoo.org/688922
Acked-by: Mikle Kolyada <zlogene@gentoo.org>
Signed-off-by: Michał Górny <mgorny@gentoo.org>
---
 eclass/texlive-module.eclass | 18 ++++++++----------
 1 file changed, 8 insertions(+), 10 deletions(-)

diff --git a/eclass/texlive-module.eclass b/eclass/texlive-module.eclass
index a415205e035f..fc83abe49c54 100644
--- a/eclass/texlive-module.eclass
+++ b/eclass/texlive-module.eclass
@@ -140,16 +140,14 @@ RELOC_TARGET=texmf-dist
 texlive-module_src_unpack() {
 	unpack ${A}
 
-	grep RELOC tlpkg/tlpobj/* | awk '{print $2}' | sed 's#^RELOC/##' > "${T}/reloclist" || die
-	{ for i in $(<"${T}/reloclist"); do  dirname ${i}; done; } | uniq > "${T}/dirlist"
-	for i in $(<"${T}/dirlist"); do
-		if [[ ! -d ${RELOC_TARGET}/${i} ]]; then
-			mkdir -p "${RELOC_TARGET}/${i}" || die
-		fi
-	done
-	for i in $(<"${T}/reloclist"); do
-		mv "${i}" "${RELOC_TARGET}"/$(dirname "${i}") || die "failed to relocate ${i} to ${RELOC_TARGET}/$(dirname ${i})"
-	done
+	sed -n -e 's:\s*RELOC/::p' tlpkg/tlpobj/* > "${T}/reloclist" || die
+	sed -e 's/\/[^/]*$//' -e "s:^:${RELOC_TARGET}/:" "${T}/reloclist" |
+		sort -u |
+		xargs mkdir -p || die
+	local i
+	while read i; do
+		mv "${i}" "${RELOC_TARGET}/${i%/*}" || die
+	done < "${T}/reloclist"
 }
 
 # @FUNCTION: texlive-module_add_format
-- 
2.26.2