From b50970f634d16d4c59154acf126c69602f343d86 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Olivier=20Mengu=C3=A9?= <dolmen@cpan.org>
Date: Mon, 13 May 2013 20:23:55 +0200
Subject: [PATCH] Optimize _lp_color_map using arithmetic comparisons

---
 liquidprompt | 24 ++++++++++++------------
 1 file changed, 12 insertions(+), 12 deletions(-)

diff --git a/liquidprompt b/liquidprompt
index 46b887b..1e14ad4 100755
--- a/liquidprompt
+++ b/liquidprompt
@@ -1127,28 +1127,28 @@ _lp_battery_color()
 }
 
 _lp_color_map() {
-    if   [[ $1 -ge 0   ]] && [[ $1 -lt 20  ]] ; then
+    local -i load
+    load=$1
+    if   (( load <  20 )); then
         echo -ne "${LP_COLORMAP_0}"
-    elif [[ $1 -ge 20  ]] && [[ $1 -lt 40  ]] ; then
+    elif (( load <  40 )); then
         echo -ne "${LP_COLORMAP_1}"
-    elif [[ $1 -ge 40  ]] && [[ $1 -lt 60  ]] ; then
+    elif (( load <  60 )); then
         echo -ne "${LP_COLORMAP_2}"
-    elif [[ $1 -ge 60  ]] && [[ $1 -lt 80  ]] ; then
+    elif (( load <  80 )); then
         echo -ne "${LP_COLORMAP_3}"
-    elif [[ $1 -ge 80  ]] && [[ $1 -lt 100 ]] ; then
+    elif (( load < 100 )); then
         echo -ne "${LP_COLORMAP_4}"
-    elif [[ $1 -ge 100 ]] && [[ $1 -lt 120 ]] ; then
+    elif (( load < 120 )); then
         echo -ne "${LP_COLORMAP_5}"
-    elif [[ $1 -ge 120 ]] && [[ $1 -lt 140 ]] ; then
+    elif (( load < 140 )); then
         echo -ne "${LP_COLORMAP_6}"
-    elif [[ $1 -ge 140 ]] && [[ $1 -lt 160 ]] ; then
+    elif (( load < 160 )); then
         echo -ne "${LP_COLORMAP_7}"
-    elif [[ $1 -ge 160 ]] && [[ $1 -lt 180 ]] ; then
+    elif (( load < 180 )) ; then
         echo -ne "${LP_COLORMAP_8}"
-    elif [[ $1 -ge 180 ]] ; then
+    else # (( load >= 180 ))
         echo -ne "${LP_COLORMAP_9}"
-    else
-        echo -ne "${LP_COLORMAP_0}"
     fi
 }