Add Linux SVG icon generation script

resources/svg2img.sh

@@ -0,0 +1,94 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+script_dir="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+svg_dir="$script_dir/svg"
+out_dir="$script_dir/img"
+sizes=(16 32 64)
+themes=(light dark)
+
+get_theme_color() {
+  case "$1" in
+    light) printf '%s\n' '#000000' ;;
+    dark) printf '%s\n' '#ffffff' ;;
+    *)
+      printf 'Unknown theme: %s\n' "$1" >&2
+      exit 1
+      ;;
+  esac
+}
+
+ensure_temp_svg() {
+  local input_svg="$1"
+  local color="$2"
+  local temp_svg="$3"
+
+  python3 - "$input_svg" "$color" "$temp_svg" <<'PY'
+import pathlib
+import re
+import sys
+
+input_path = pathlib.Path(sys.argv[1])
+color = sys.argv[2]
+output_path = pathlib.Path(sys.argv[3])
+content = input_path.read_text(encoding="utf-8")
+patched, count = re.subn(r"<svg([^>]*?)>", f'<svg\\1 style="color: {color}">', content, count=1)
+if count != 1:
+    raise SystemExit("Couldn't find <svg> tag to patch.")
+output_path.write_text(patched, encoding="utf-8")
+PY
+}
+
+if [[ ! -d "$svg_dir" ]]; then
+  echo "SVG source directory not found: $svg_dir" >&2
+  exit 1
+fi
+
+mkdir -p "$out_dir"
+
+if ! command -v inkscape >/dev/null 2>&1; then
+  echo "Inkscape CLI is not installed or not in PATH. Please install it from https://inkscape.org/" >&2
+  exit 1
+fi
+
+if ! command -v python3 >/dev/null 2>&1; then
+  echo "python3 is required to patch the SVG color attribute." >&2
+  exit 1
+fi
+
+shopt -s nullglob
+svg_files=("$svg_dir"/*.svg)
+shopt -u nullglob
+
+if [[ ${#svg_files[@]} -eq 0 ]]; then
+  echo "No SVG files found in $svg_dir" >&2
+  exit 0
+fi
+
+temp_svg="$(mktemp "${TMPDIR:-/tmp}/sortana-svg2img.XXXXXX.svg")"
+cleanup() {
+  rm -f "$temp_svg"
+}
+trap cleanup EXIT
+
+for svg_path in "${svg_files[@]}"; do
+  base_name="$(basename "${svg_path%.svg}")"
+
+  for theme in "${themes[@]}"; do
+    color="$(get_theme_color "$theme")"
+    ensure_temp_svg "$svg_path" "$color" "$temp_svg"
+
+    for size in "${sizes[@]}"; do
+      out_file="$out_dir/$base_name-$theme-$size.png"
+      echo "Exporting $out_file (color $color)..."
+      inkscape "$temp_svg" \
+        --export-type=png \
+        --export-filename="$out_file" \
+        --export-width="$size" \
+        --export-height="$size" \
+        --actions=export-do
+    done
+  done
+done
+
+echo "Done generating light/dark themed PNGs."