terminal: Create module to consolidate term utils

Terminal application, a variety of shell configurations, terminal file
and session management all consolidated in one place.

terminal/.config/vifm/scripts/vifm-sixel

@@ -0,0 +1,62 @@
+#!/bin/sh
+
+[ -d "$HOME/.cache/vifm" ] || mkdir -p "$HOME/.cache/vifm"
+
+# $1 action
+action="$1"
+# $2 panel width
+panel_width=$(($2 * 6))
+# $3 panel height
+panel_height=$(($3 * 14))
+# $4 image path
+image_file="$4"
+
+PCACHE="$HOME/.cache/vifm/thumbnail.$(stat --printf '%n\0%i\0%F\0%s\0%W\0%Y' -- "$(readlink -f "$PWD/$image_file")" | sha256sum | awk '{print $1}')"
+
+cleanup() {
+    printf '\33[s\33[5A\33[2K\33[u'
+    clear
+    exit 0
+}
+
+# recieves image with height
+image() {
+    montage "$1" -geometry "${2}x${3}" sixel:-
+}
+
+case "$action" in
+"clear")
+    cleanup
+    ;;
+"draw")
+    [ ! -f "${PCACHE}.jpg" ] && convert "$image_file"'[0]' "${PCACHE}.jpg"
+    # FILE="$PWD/$image_file"
+    image "${PCACHE}.jpg" "$panel_width" "$panel_height"
+    ;;
+"video")
+    [ ! -f "${PCACHE}.jpg" ] &&
+        ffmpegthumbnailer -i "$4" -o "${PCACHE}.jpg" -s 0 -q 5
+    image "${PCACHE}.jpg" "$panel_width" "$panel_height"
+    ;;
+"epub")
+    [ ! -f "${PCACHE}.jpg" ] &&
+        epub-thumbnailer "$image_file" "$PCACHE" 1024
+    image "${PCACHE}.jpg" "$panel_width" "$panel_height"
+    ;;
+"pdf")
+    [ ! -f "${PCACHE}.jpg" ] &&
+        pdftoppm -jpeg -f 1 -singlefile "$image_file" "$PCACHE"
+    image "${PCACHE}.jpg" "$panel_width" "$panel_height"
+    ;;
+"audio")
+    [ ! -f "${PCACHE}.jpg" ] &&
+        ffmpeg -i "$image_file" "${PCACHE}.jpg" -y >/dev/null
+    image "${PCACHE}.jpg" "$panel_width" "$panel_height"
+    ;;
+"font")
+    [ ! -f "${PCACHE}.jpg" ] &&
+        fontpreview -i "$image_file" -o "${PCACHE}.jpg"
+    image "${PCACHE}.jpg" "$panel_width" "$panel_height"
+    ;;
+*) ;;
+esac