Setup

* -S option
	* call setup when no conf file present
	* [general] setup

atom

@@ -72,7 +72,7 @@ help() {
 
 #parse arguments
 OPTERR=0
-while getopts ':c:Cl:T:F:hD' opt
+while getopts ':c:Cl:T:F:ShD' opt
 do
 	case $opt in
 		c)
@@ -90,6 +90,9 @@ do
 		F)
 			forceall+=("$OPTARG")
 		;;
+		S)
+			forcesetup=1
+		;;
 		h)
 			help
 			exit 0
@@ -110,24 +113,38 @@ do
 	esac
 done
 
+askconf() {
+	read -p"Create one now? [Y/n/q] " createconf
+	case $createconf in
+		''|[yY])	
+			setup
+		;;
+		[nNqQ])
+			echo "You need a configuration file. If you"	\
+				"want to create it yourself, please"	\
+				"read doc/config and doc/example.cfg." >&2
+			exit $ENOCFG
+		;;
+		*)
+			echo "Come again?" >&2
+			askconf
+		;;
+	esac
+}
+
 if [ ! -f "$cffile" ]
 then
-	if [ ! -d ~/.atom ]
+	if [ ! -d "${cffile%/*}" ]
 	then
-		mkdir -p ~/.atom
+		mkdir -p "${cffile%/*}"
 	fi
-	sed "s:%HOME%:$HOME:" "$exampleconf" > "$cffile"
+	echo "No configuration file found!" >&2
-	cat >&2 <<-EOCfgNotice
+	askconf
-	No configuration file found!
-	An example file has been created as "${cffile/$HOME/~}".
-	You should change it to your likings using you favorite editor.
-
-	Bailing out.
-	EOCfgNotice
-	exit $ENOCFG
 fi
 getConfig
 
+(( forcesetup )) && setup
+
 set +H
 
 # Apply CLI overrides

lib/config/getConfig

@@ -19,6 +19,7 @@ getConfig() {
 				context=Destination
 				destination="${key#[}"
 				destination="${destination%]}"
+				destinations+=("${destination%]}")
 			;;
 			*)
 				getConfig$context

lib/config/getConfigDestination

@@ -19,7 +19,7 @@ getConfigDestination() {
 					oggencneeded=1
 				;;
 				*)
-					echo "Unsupported destination format: $value" >2&
+					echo "Unsupported destination format: $value" >&2
 					exit $EFORMAT
 				;;
 			esac

lib/setup/setup

@@ -0,0 +1,15 @@
+#!/bin/bash
+
+setup() {
+	cat <<-EOStartConf
+You will now be asked (hopefully) simple questions to help you configure AtOM's
+behavior.
+
+Completion is available for prompts asking for a paths or filenames.
+	EOStartConf
+	setupGeneral
+	setupSource
+	setupDestinations
+	unset expr
+	exit
+}

lib/setup/setupGeneral

@@ -0,0 +1,132 @@
+#!/bin/bash
+
+setupGeneral() {
+	cat <<-EODesc
+
+[General]
+    We will start by setting the general parameters defining the program's
+    behavior.
+	EODesc
+	cat <<-EODesc
+
+    Target load (integer):
+        Defines how parallel processing will behave. AtOM will try to keep the
+        1 minute load average between <load> and <load>+1 by adjusting
+       concurrency.  Initial concurrency will be set to half of that value.
+	EODesc
+	expr='^[0-9]*$'
+	comeagain() {
+		read					\
+			-e				\
+			-p'Target load: (integer) '	\
+			${maxload+-i"$maxload"}		\
+			value
+		if [ -n "$value" ] && [[ $value =~ $expr ]]
+		then
+			maxload="$value"
+		else
+			echo "Invalid max-load value: $value" >&2
+			comeagain
+		fi
+	}
+	comeagain
+	cat <<-EODesc
+
+    Load interval (seconds, integer):
+        How often should we check the load average and adjust concurrency. Set
+        this too low, and concurrency may be increased too quickly. Set this
+        too high, and AtOM will not adapt quickly enough to load increase. In
+        both cases, your hard drive will suffer. In my experience, 30 seconds
+        is a good value.
+	EODesc
+	comeagain() {
+		read					\
+			-e				\
+			-p'Load interval: (integer) '	\
+			-i${loadinterval:-30}		\
+			value
+		if [[ $value =~ $expr ]]
+		then
+			loadinterval="$value"
+		else
+			echo "Invalid load-interval value: $value" >&2
+			comeagain
+		fi
+	}
+	comeagain
+	cat <<-EODesc
+
+    Ionice <class> [niceness]:
+        IO-hungry processes will be run with ionice class <class> and niceness
+        [niceness] (if applicable). See man ionice for details.
+	EODesc
+	comeagain() {
+		read					\
+			-e				\
+			-p'Ionice: <1-3> [0-7] '	\
+			-i"${class:-3} ${niceness}"	\
+			class niceness
+		case $class in
+			1)
+				# real-time class, only root can do that
+				if (( UID ))
+				then
+					echo "IO class 'realtime' is"\
+					"not available to unprivileged"\
+					"users" >&2
+					comeagain
+				fi
+				if [ -n "$niceness" ]		\
+				&& (( niceness >= 0 && niceness <= 7 ))
+				then
+					ionice="ionice -c1 -n$niceness "
+				else
+					echo "Invalid IO priority"\
+					"'$niceness'" >&2
+					comeagain
+				fi
+			;;
+			2)
+				if [ -n "$niceness" ]		\
+				&& (( niceness >= 0 && niceness <= 7 ))
+				then
+					ionice="ionice -c2 -n$niceness "
+				else
+					echo "Invalid IO priority"\
+					"'$niceness'" >&2
+					comeagain
+				fi
+			;;
+			3)
+				ionice="ionice -c3 "
+			;;
+			*)
+				echo "Invalid ionice parameters $value"\
+				>&2
+				comeagain
+			;;
+		esac
+	}
+	comeagain
+	cat <<-EODesc
+
+    Temporary Directory (path):
+        Name speaks for itself: this is where FIFOs (for communicating with
+        sqlite) and temporary WAVE files will be created.  Note that debug logs
+        (if enabled) will go there too.
+	EODesc
+	read							\
+		-e						\
+		-i"${tempdir:-$HOME/.atom/tmp}"			\
+		-p'Temporary directory (<TAB> for completion): '\
+		tempdir
+	cat <<-EODesc
+
+		    Database (filename):
+	EODesc
+	read							\
+		-e						\
+		-i"${database:-$HOME/.atom/atom.db}"		\
+		-p'Database file (<TAB> for completion): '	\
+		database
+}