From 22efe874cea08a376d745a64fb231d4ced330ce1 Mon Sep 17 00:00:00 2001
From: Mike Frysinger <vapier@gentoo.org>
Date: Thu, 21 Jun 2007 23:42:52 +0000
Subject: cache the result of --suffix to reduce testing overhead as suggested
 by Mr_Bones_

svn path=/main/trunk/; revision=6922
---
 bin/ecompress | 31 +++++++++++++++++--------------
 1 file changed, 17 insertions(+), 14 deletions(-)

(limited to 'bin/ecompress')

diff --git a/bin/ecompress b/bin/ecompress
index 046e546fb..bf886e1c4 100755
--- a/bin/ecompress
+++ b/bin/ecompress
@@ -24,20 +24,23 @@ case $1 in
 	--suffix)
 		[[ -n $2 ]] && vecho "${0##*/}: --suffix takes no additional arguments" 1>&2
 
-		set -e
-		tmpdir="${T}"/.ecompress$$.${RANDOM}
-		mkdir "${tmpdir}"
-		cd "${tmpdir}"
-		# we have to fill the file enough so that there is something
-		# to compress as some programs will refuse to do compression
-		# if it cannot actually compress the file
-		echo {0..1000} > compressme
-		${PORTAGE_COMPRESS} ${PORTAGE_COMPRESS_FLAGS} compressme > /dev/null
-		suffix=$(ls compressme*)
-		suffix=${suffix#compressme}
-		cd /
-		rm -rf "${tmpdir}"
-		echo "${suffix}"
+		if [[ ! -e ${T}/.ecompress.suffix ]] ; then
+			set -e
+			tmpdir="${T}"/.ecompress$$.${RANDOM}
+			mkdir "${tmpdir}"
+			cd "${tmpdir}"
+			# we have to fill the file enough so that there is something
+			# to compress as some programs will refuse to do compression
+			# if it cannot actually compress the file
+			echo {0..1000} > compressme
+			${PORTAGE_COMPRESS} ${PORTAGE_COMPRESS_FLAGS} compressme > /dev/null
+			suffix=$(ls compressme*)
+			suffix=${suffix#compressme}
+			cd /
+			rm -rf "${tmpdir}"
+			echo "${suffix}" > "${T}/.ecompress.suffix"
+		fi
+		cat "${T}/.ecompress.suffix"
 		;;
 	--bin)
 		[[ -n $2 ]] && vecho "${0##*/}: --bin takes no additional arguments" 1>&2
-- 
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