Implemented FormatUtils & used for startup banner.

The new horizontal utility utilizes the * token for centering.
* Every field with the token %*s will autofill the remaining space.
* Field tokens may be any valid format specifier, plus the asterisk.
* > Example: printf "%*s %.*s %*d" "col1" "col2" "3.0" (notice asterisk)
* > Example: printf "%*b %s" "\e[1;33mThis is red text\e[0m" "this is not"

Use the new utilities to center the startup banner and other messages.

fluxion.sh

@@ -25,14 +25,14 @@ export FLUXIONOutputDevice=$([ $FLUXIONDebug ] && echo "/dev/stdout" || echo "/d
 FLUXIONHoldXterm=$([ $FLUXIONDebug ] && echo "-hold" || echo "")
 
 ################################# < Shell Color Codes > ################################
-CRed="\033[1;31m"
+CRed="\e[1;31m"
-CGrn="\033[1;32m"
+CGrn="\e[1;32m"
-CYel="\033[1;33m"
+CYel="\e[1;33m"
-CBlu="\033[1;34m"
+CBlu="\e[1;34m"
-CPrp="\033[5;35m"
+CPrp="\e[5;35m"
-CCyn="\033[5;36m"
+CCyn="\e[5;36m"
-CGry="\033[0;37m"
+CGry="\e[0;37m"
-CWht="\033[1;37m"
+CWht="\e[1;37m"
 CClr="\e[0m"
 
 ################################ < FLUXION Parameters > ################################
@@ -41,6 +41,7 @@ FLUXIONVLine="$CRed[$CYel*$CRed]$CClr"
 
 ################################# < Library Includes > #################################
 source lib/SandboxUtils.sh
+source lib/FormatUtils.sh
 source lib/IOUtils.sh
 source lib/HashUtils.sh
 
@@ -244,19 +245,23 @@ function check_dependencies() {
 
 	for CLITool in ${CLITools[*]}; do
 		# Could use parameter replacement, but requires extra variable.
-		echo -ne "$FLUXIONVLine `printf "%-64s" "$CLITool" | sed 's/ /./g'`"
+		local line=$(printf "%-44s" "$CLITool" | sed 's/ /./g')
-
+		
+		#line+=$([ ! hash $CLITool 2>/dev/null ] && echo "$CRed Missing!$CClr" || echo ".....$CGrn OK.$CClr")
 		if ! hash $CLITool 2>/dev/null; then
-			echo -e "$CRed Missing!$CClr"
+			line+="$CRed Missing!$CClr"
 			CLIToolsMissing=1
 		else
-			echo -e ".....$CGrn OK.$CClr"
+			line+=".....$CGrn OK.$CClr"
 		fi
 
+		format_center "$FLUXIONVLine $line"
+		echo -e "$FormatCenter"
+
 		sleep 0.025
 	done
 
-	if [ $CLIToolsMissing ]; then
+	if [ "$CLIToolsMissing" ]; then
 		exit 1
 	fi
 
@@ -269,23 +274,31 @@ if [ ! -d "$FLUXIONWorkspacePath" ]; then
 fi
 
 if [ ! $FLUXIONDebug ]; then
-	clear; echo
+	clear; echo -e "$CRed"
-	sleep 0.01 && echo -e "$CRed "
+	FLUXIONBanner=()
-	sleep 0.01 && echo -e "         ⌠▓▒▓▒   ⌠▓╗     ⌠█┐ ┌█   ┌▓\  /▓┐   ⌠▓╖   ⌠◙▒▓▒◙   ⌠█\  ☒┐    "
+	format_center " ⌠▓▒▓▒   ⌠▓╗     ⌠█┐ ┌█   ┌▓\  /▓┐   ⌠▓╖   ⌠◙▒▓▒◙   ⌠█\  ☒┐"; FLUXIONBanner[${#FLUXIONBanner[@]}]="$FormatCenter";
-	sleep 0.01 && echo -e "         ║▒_     │▒║     │▒║ ║▒    \▒\/▒/    │☢╫   │▒┌╤┐▒   ║▓▒\ ▓║    "
+	format_center " ║▒_     │▒║     │▒║ ║▒    \▒\/▒/    │☢╫   │▒┌╤┐▒   ║▓▒\ ▓║"; FLUXIONBanner[${#FLUXIONBanner[@]}]="$FormatCenter";
-	sleep 0.01 && echo -e "         ≡◙◙     ║◙║     ║◙║ ║◙      ◙◙      ║¤▒   ║▓║☯║▓   ♜◙\✪\◙♜    "
+	format_center " ≡◙◙     ║◙║     ║◙║ ║◙      ◙◙      ║¤▒   ║▓║☯║▓   ♜◙\✪\◙♜"; FLUXIONBanner[${#FLUXIONBanner[@]}]="$FormatCenter";
-	sleep 0.01 && echo -e "         ║▒      │▒║__   │▒└_┘▒    /▒/\▒\    │☢╫   │▒└╧┘▒   ║█ \▒█║    "
+	format_center " ║▒      │▒║__   │▒└_┘▒    /▒/\▒\    │☢╫   │▒└╧┘▒   ║█ \▒█║"; FLUXIONBanner[${#FLUXIONBanner[@]}]="$FormatCenter";
-	sleep 0.01 && echo -e "         ⌡▓      ⌡◘▒▓▒   ⌡◘▒▓▒◘   └▓/  \▓┘   ⌡▓╝   ⌡◙▒▓▒◙   ⌡▓  \▓┘    "
+	format_center " ⌡▓      ⌡◘▒▓▒   ⌡◘▒▓▒◘   └▓/  \▓┘   ⌡▓╝   ⌡◙▒▓▒◙   ⌡▓  \▓┘"; FLUXIONBanner[${#FLUXIONBanner[@]}]="$FormatCenter";
-	sleep 0.01 && echo -e "        ¯¯¯     ¯¯¯¯¯¯  ¯¯¯¯¯¯¯  ¯¯¯    ¯¯¯ ¯¯¯¯  ¯¯¯¯¯¯¯  ¯¯¯¯¯¯¯¯    "
+	format_center "¯¯¯     ¯¯¯¯¯¯  ¯¯¯¯¯¯¯  ¯¯¯    ¯¯¯ ¯¯¯¯  ¯¯¯¯¯¯¯  ¯¯¯¯¯¯¯¯"; FLUXIONBanner[${#FLUXIONBanner[@]}]="$FormatCenter";
+	 
+	for line in "${FLUXIONBanner[@]}"; do
+		echo "$line"; sleep 0.1
+	done
 
 	echo
 
 	sleep 0.1
-	echo -e "$CRed                        FLUXION $CWht$FLUXIONVersion (rev. $CGrn$FLUXIONRevision$CWht)$CYel by$CWht ghost"
+	format_center "${CGrn}Site: ${CRed}https://github.com/FluxionNetwork/fluxion$CClr"; echo -e "$FormatCenter"
+
 	sleep 0.1
-	echo -e "$CGrn             Site: ${CRed}https://github.com/FluxionNetwork/fluxion$CClr"
+	format_center "${CRed}FLUXION $CWht$FLUXIONVersion (rev. $CGrn$FLUXIONRevision$CWht)$CYel by$CWht ghost"; echo -e "$FormatCenter"
+	
 	sleep 0.1
-	echo -n "                           Online Version"
+	FLUXIONVNotice="Online Version"
+	FLUXIONVNoticeOffset=$(($(tput cols) / 2 + ((${#FLUXIONVNotice} / 2) - 4)))
+	printf "%${FLUXIONVNoticeOffset}s" "Online Version"
 
 	check_updates &
 	spinner "$!"

lib/FormatUtils.sh

@@ -0,0 +1,67 @@
+#!/bin/bash
+
+FormatTabLength=8
+
+# This should be relocated (here temporarily)
+tabs -$FormatTabLength # Set tab width to var
+
+format_strip_invisibles() {
+	FormatStripInvisibles=$1
+
+	# Strip color escape sequences
+	FormatStripInvisibles=$(echo "$FormatStripInvisibles" | sed -r 's/\\e\[([0-9]*;?[0-9]+)m//g')
+
+	# Strip control characters
+	FormatStripInvisibles=$(echo "$FormatStripInvisibles" | sed -r 's/\\t//g' | sed -r 's/\\n//g')
+}
+
+format_strip_specifiers() {
+	FormatStripSpecifiers=$(echo "$1" | sed -r 's/%[\+-]?(([0-9]+|\*)|[0-9]*\.([0-9]+|\*))?[bqdiouxXfeEgGcsnaA]//g')
+}
+
+format_list_specifiers() {
+	# Special specifier also included (with length value as '*').
+	FormatListSpecifiers=($(echo "$1" | grep -oP '%[\+-]?(([0-9]+|\*)|[0-9]*\.([0-9]+|\*))?[bqdiouxXfeEgGcsnaA]'))
+}
+
+format_emulate_expansion() {
+echo
+}
+
+format_calculate_length() {
+	# Retrieve string of printable characters only in format before substitution.
+	format_strip_invisibles "`echo "$1" | sed -r 's/%%/%1s/g'`"
+	local __format_calculate_length__visibles=$FormatStripInvisibles
+
+	# Calculate number of all printable characters in format before substitution.
+	format_strip_specifiers "$__format_calculate_length__visibles"
+	local __format_calculate_length__literalsLength=${#FormatStripSpecifiers}
+
+	format_list_specifiers "$__format_calculate_length__visibles"
+
+	local __format_calculate_length__staticsLength=$(echo "${FormatListSpecifiers[@]}" | grep -oP '\d+' | awk '{s+=$0} END {print s}')
+
+	FormatCalculateLength=$((__format_calculate_length__literalsLength + __format_calculate_length__staticsLength))
+}
+
+format_autosize() {
+	# Treat horizontal tab as a specifier with a length of tab-length.
+	format_calculate_length "`echo "$1" | sed -r 's/\\\\t/%'"$FormatTabLength"'s/g'`"
+	# Exploit the fact the previous function just calculated FormatStripSpecifiers. 
+	local __format_autosize__dynamics_count=$(echo "${FormatListSpecifiers[@]}" | grep -oP '%[\+-]?\.?\*[bqdiouxXfeEgGcsnaA]' | wc -l)
+	local __format_autosize__availableLength=$(( $(tput cols) - $FormatCalculateLength ))
+	local __format_autosize__dynamicsLength=$(( $__format_autosize__availableLength / $__format_autosize__dynamics_count ))
+	FormatAutosize="$1"
+	FormatAutosize=$(echo "$FormatAutosize" | sed -r 's/%\*s/%'"$__format_autosize__dynamicsLength"'s/g')
+	FormatAutosize=$(echo "$FormatAutosize" | sed -r 's/%\.\*s/%.'"$__format_autosize__dynamicsLength"'s/g')
+	FormatAutosize=$(echo "$FormatAutosize" | sed -r 's/%-\*s/%-'"$__format_autosize__dynamicsLength"'s/g')
+	FormatAutosize=$(echo "$FormatAutosize" | sed -r 's/%-\.\*s/%-.'"$__format_autosize__dynamicsLength"'s/g')
+}
+
+format_center() {
+	format_strip_invisibles "$1"
+	local __format_center__text_length=${#FormatStripInvisibles}
+	format_autosize "%*s%${__format_center__text_length}s%*s"
+	FormatCenter=$(printf "$FormatAutosize" "" "$1" "")
+	#FormatCenter=$(echo "$FormatCenter" | cut -d X -f 1)"$1"$(echo "$FormatCenter" | cut -d X -f 2)
+}