From 816e938e3cb2bf214a692deef47ce897d8748b26 Mon Sep 17 00:00:00 2001
From: Silvio Rhatto <rhatto@riseup.net>
Date: Wed, 3 Jun 2015 11:57:13 -0300
Subject: Cache support at weather-query

---
 weather-query | 29 ++++++++++++++++++++++++++++-
 1 file changed, 28 insertions(+), 1 deletion(-)

(limited to 'weather-query')

diff --git a/weather-query b/weather-query
index 774bb73..e925342 100755
--- a/weather-query
+++ b/weather-query
@@ -3,11 +3,38 @@
 # Simple wrapper around brweather
 #
 
+# Parameters
+BASENAME="`basename $0`"
 PROGRAM="$1"
+CACHE="$HOME/.local/share/weather"
+
+# Command line args
 shift
 
+# Weather service query
+function weather_query {
+  # Make sure everything we need exists
+  mkdir -p $CACHE
+  touch $CACHE/weather.cur $CACHE/weather.prev
+
+  # Save the previous forecast
+  cp $CACHE/weather.cur $CACHE/weather.prev
+  weather $* > $CACHE/weather.cur
+
+  # Test if current forecast is empty, meaning
+  # that we're probably ofline. In that case
+  # we provide the previous output.
+  if [ ! -s "$CACHE/weather.cur" ]; then
+    cp $CACHE/weather.pre $CACHE/weather.cur
+  fi
+
+  # Display output
+  cat $CACHE/weather.cur
+}
+
+# Main
 if [ "$PROGRAM" == 'brweather' ]; then
   brweather $* | grep -v 'Erro.'
 else
-  weather $*
+  weather_query
 fi
-- 
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