misc: rotate crash.log for kobo/kindle/pocketbook

platform/kindle/koreader.sh

@@ -243,7 +243,11 @@ logmsg "Starting KOReader . . ."
 if [ "${FROM_KUAL}" == "yes" ] ; then
 	eips_print_bottom_centered "Starting KOReader . . ." 1
 fi
-./reader.lua "$@" > crash.log 2>&1
+
+# we keep maximum 100K worth of crash log
+cat crash.log &> /dev/null | tail -c 100000000 > crash.log.new
+mv -f crash.log.new crash.log
+./reader.lua "$@" >> crash.log 2>&1
 
 # clean up our own process tree in case the reader crashed (if needed, to avoid flooding KUAL's log)
 if pidof reader.lua > /dev/null 2>&1 ; then

platform/kobo/koreader.sh

@@ -111,7 +111,10 @@ if awk '$4~/(^|,)ro($|,)/' /proc/mounts | grep ' /mnt/sd ' ; then
 	mount -o remount,rw /mnt/sd
 fi
 
-./reader.lua "${args}" > crash.log 2>&1
+# we keep maximum 100K worth of crash log
+cat crash.log &> /dev/null | tail -c 100000000 > crash.log.new
+mv -f crash.log.new crash.log
+./reader.lua "${args}" >> crash.log 2>&1
 
 if [ "${FROM_NICKEL}" = "true" ] ; then
 	if [ "${FROM_KFMON}" != "true" ] ; then

platform/pocketbook/koreader.app

@@ -33,7 +33,10 @@ else
     args="$@"
 fi
 
-./reader.lua "$args" > crash.log 2>&1
+# we keep maximum 100K worth of crash log
+cat crash.log &> /dev/null | tail -c 100000000 > crash.log.new
+mv -f crash.log.new crash.log
+./reader.lua "$args" >> crash.log 2>&1
 
 if pidof reader.lua > /dev/null 2>&1 ; then
 	killall -TERM reader.lua

reader.lua

@@ -1,4 +1,16 @@
 #!./luajit
+print(string.format([[
+---------------------------------------------
+                launching...
+  _  _____  ____                _
+ | |/ / _ \|  _ \ ___  __ _  __| | ___ _ __
+ | ' / | | | |_) / _ \/ _` |/ _` |/ _ \ '__|
+ | . \ |_| |  _ <  __/ (_| | (_| |  __/ |
+ |_|\_\___/|_| \_\___|\__,_|\__,_|\___|_|
+
+ [*] Current time: %s
+]], os.date("%x-%X")))
+
 
 -- load default settings
 require "defaults"