1 files changed, 92 insertions, 0 deletions
diff --git a/hw/clef/nix/svg.nix b/hw/clef/nix/svg.nix
new file mode 100644
index 0000000..c93ba87
--- /dev/null
+++ b/hw/clef/nix/svg.nix
@@ -0,0 +1,92 @@
+{
+  runCommand,
+  kicad,
+  inkscape,
+
+  nix-filter,
+  lib,
+
+  pcb_path,
+  src,
+
+  withSilk ? true,
+  withEdgeCuts ? true,
+  withMirrors ? true,
+  nLayer ? 2,
+
+  boardName ? (lib.removeSuffix ".kicad_pcb" (builtins.baseNameOf pcb_path)),
+}: let
+  sharePath = "share/npry/clef/svg";
+
+in runCommand "${boardName}.svg" {
+  nativeBuildInputs = [
+    kicad
+    inkscape
+  ];
+
+  src = nix-filter {
+    root = src;
+
+    include = [
+      (nix-filter.matchExt "kicad_pcb")
+    ];
+  };
+
+  nInnerLayer = if nLayer < 2 then 0 else nLayer - 2;
+
+  allowedRequisites = [];
+} ''
+  set -e
+
+  export HOME=$(mktemp -d)
+
+  echo "board: '${boardName}'" >&2
+
+  mkdir -p $out/${sharePath}
+  cd "$out/${sharePath}"
+
+  mksvg() {
+    local infile=$1
+    local layers=$2
+    local outfile=$3
+
+    kicad-cli pcb export svg \
+      "$infile" \
+      -l "$layers" \
+      -o "$outfile.svg" \
+      --page-size-mode 2 \
+      --exclude-drawing-sheet
+
+    inkscape --actions 'select-all;fit-canvas-to-selection' \
+      -o "$outfile.trim.svg" \
+      "$outfile.svg"
+
+  ${if withMirrors then ''
+    kicad-cli pcb export svg \
+      "$infile" \
+      -m \
+      -l "$layers" \
+      -o "$outfile.mirror.svg" \
+      --page-size-mode 2 \
+      --exclude-drawing-sheet
+
+    inkscape --actions 'select-all;fit-canvas-to-selection' \
+      -o "$outfile.mirror.trim.svg" \
+      "$outfile.mirror.svg"
+  '' else ""}
+  }
+
+  mksvg "$src/${pcb_path}"  \
+    "F.Cu,${if withSilk then "F.Silkscreen," else ""}${if withEdgeCuts then "Edge.Cuts," else ""}" \
+    front
+
+  mksvg "$src/${pcb_path}"  \
+    "B.Cu,${if withSilk then "B.Silkscreen," else ""}${if withEdgeCuts then "Edge.Cuts," else ""}" \
+    back
+
+  for i in $(seq 1 $nInnerLayer); do
+    mksvg "$src/${pcb_path}"  \
+      "In$i.Cu,${if withEdgeCuts then "Edge.Cuts," else ""}" \
+      "in$i"
+  done
+''