A bit of work towards box drawing and string placement.

This could let me do my clock idea... or a text/gui colour
chooser.

bin/vulgar.sh

@@ -4,13 +4,14 @@ send_os_command()
 {
 	_splat=""
 	_suffix=""
+	echo -n ']'
 	while [ -n "${1}" ]
 	do
-		[ -n '${_splat}' ] && _splat=${_splat}';'
-		_splat="${_splat}${1}"
+		[ -n '${_splat}' ] && echo -n ';'
+		echo -n "${1}"
 		shift 1
 	done
-	echo "]${_splat}${_suffix}"
+	echo -n "${suffix}"
 }
 
 send_csi_command()
@@ -18,28 +19,104 @@ send_csi_command()
 	_splat=""
 	_suffix="${1}"
 	shift 1
+
+	
+	echo -n ''
+	echo -n '['
+
+	# First one no ';' prefix....
+	echo -n "${1}"
+	shift 1
+
 	while [ -n "${1}" ]
 	do
-		[ -n '${_splat}' ] && _splat="${_splat}"';'
-		_splat="${_splat}${1}"
+		[ -n '${_splat}' ] && echo -n ';'
+		echo -n "${1}"
 		shift 1
 	done
-	echo ${_splat}
-	echo "[${_splat}${_suffix}"
+	echo -n "${_suffix}"
 }
 
 erase_block()
 {
-	send_csi_command '${' $*
+	send_csi_command '${' ${*}
+}
+
+fill_block_raw()
+{
+	send_csi_command '$x' ${*}
 }
 
 fill_block()
 {
-	send_csi_command '$x' $*
+	_code=`printf '%d' "'$1"`
+	shift 1
+	fill_block_raw ${_code} ${*}
 }
 
+write_char_raw()
+{
+	fill_block_raw $1 $2 $3 $2 $3
+}
 
+write_char()
+{
+	_code=`printf '%d' "'$1"`
+	shift 1
+	write_char_raw ${_code} ${*}
+}
 
-erase_block 20 20 30 30
-fill_block X 21 21 29 29
+write_string()
+{
+	_str=$1
+	shift 1
+	_row=$1
+	shift 1
+	_col=$1
+	while [ -n "$_str" ]
+	do
+		_ch=${_str:0:1}
+		_str=${_str:1}
+		_code=`printf '%d' "'$_ch"`
+		write_char_raw $_code $_row $_col
+		_col=$(( ${_col} + 1 ))
+	done
+}
 
+draw_box()
+{
+	# T L B R
+	_T=$1
+	_L=$2
+	_B=$3
+	_R=$4
+	write_char + $_T $_L
+	write_char + $_T $_R
+	write_char + $_B $_L
+	write_char + $_B $_R
+
+	fill_block - $_T $(( $_L + 1 )) $_T $(( $_R - 1 ))
+	fill_block - $_B $(( $_L + 1 )) $_B $(( $_R - 1 ))
+
+	fill_block '|' $(( $_T + 1 )) $_L $(( $_B - 1 )) $_L
+	fill_block '|' $(( $_T + 1 )) $_R $(( $_B - 1 )) $_R
+}
+
+###############
+#
+# Builds a box of specified dimensions
+# (and clears the middle).
+#
+###############
+build_box()
+{
+	erase_block $*
+	draw_box $*
+}
+
+#erase_block 20 20 30 30
+#fill_block X 21 21 29 29
+#write_char Y 25 25
+
+build_box 8 24 19 99
+write_string "Hello World" 10 26