actually add grabber.sh

shell/bash/grabber.sh

@@ -0,0 +1,21 @@
+#!/usr/bin/env bash
+
+set -e
+
+input="${1:?input not set}"
+source="${2:?variable source not set}"
+
+css="$(cat "$input")"
+IFS=$'\n'
+for line in $css; do
+    _match="$(grep -m 1 -oP '(?<=var\()[^)\s]+(?=\))' <<< "$line" || :)"
+    if [[ ${_match:+x} == x ]]; then for match in $_match; do
+        color="$(grep -m 1 -oP "(?<=$match: )[^;\s]+(?=;)(?:\s+)?" "$source" | tail -n1 || :)"
+        if [[ ${color:+x} == x ]]; then
+            echo "replacing var($match) with $color" 1>&2
+            sed -i s/var\("$match"\)/"$color"/g "$input"
+        else
+            echo "$match not defined in $source" 1>&2
+        fi
+    done; fi
+done