Simplify envvar handling logic

Author: GrimKriegor

README.md

@@ -16,7 +16,7 @@ On startup the container will look for any environment variables prefixed by `TE
 
 Syntax: `TES3MP_SERVER_<section>_<variable>`
 
-For example `TES3MP_SERVER_GENERAL_MAXIMUM_PLAYERS` correlates to `[General] maximumPlayers` in the configuration file.
+For example `TES3MP_SERVER_GENERAL_MAXIMUMPLAYERS` correlates to `[General] maximumPlayers` in the configuration file.
 
 ## Getting the image
 

entrypoint.sh

@@ -10,22 +10,13 @@ fi
 
 printenv | grep 'TES3MP_SERVER_' | while read -r envvar
 do
-  declare -a envvar_exploded=(`echo "$envvar" | sed 's/=/ /g'`)
-  section_and_variable="${envvar_exploded[0]}"
-  value="${envvar_exploded[@]:1}"
-  section_and_variable=$(echo "$section_and_variable" \
-    | sed -e 's/TES3MP_SERVER_\([^_]*\)_\(.*\)/\1:\2/' \
-    | tr '[:upper:]' '[:lower:]' \
-    | awk -F "_" \
-      '{printf "%s", $1; \
-        for(i=2; i<=NF; i++) printf "%s", toupper(substr($i,1,1)) substr($i,2); print"";}')
-  declare -a section_and_variable_exploded=(`echo "$section_and_variable" | sed 's/:/ /g'`)
-  section="${section_and_variable_exploded[0]}"
-  variable="${section_and_variable_exploded[1]}"
+  envvar_split=$(sed -e "s/TES3MP_SERVER_\([^_]*\)_\([^=]*\)=\(.*\)/\1::\2::\3/" <<< "$envvar")
+  declare -a envvar_split_array=(`sed 's/::/ /g' <<< "$envvar_split"`)
+  section="${envvar_split_array[0]}"
+  variable="${envvar_split_array[1]}"
+  value="${envvar_split_array[2]}"
   echo "Applying \"[$section] $variable = $value\" to the configuration"
-  sed -i \
-     "/\[$section\]/I,/\[/ s/\($variable =\).*$/\1 $value/" \
-    ./tes3mp-server-default.cfg
+  sed -i "/\[$section\]/I,/\[/ s/\($variable =\).*$/\1 $value/I" ./tes3mp-server-default.cfg
 done
 
 ./tes3mp-server $@