From 7f5e8f7d7d467f6dd3321cfa7eb276396a21dc69 Mon Sep 17 00:00:00 2001
From: Nathan Perry <np@nathanperry.dev>
Date: Tue, 13 Aug 2024 22:30:33 -0400
Subject: nix: rewrite expressions to be generic

---
 nix/svg.nix | 78 +++++++++++++++++++++++++++++++++++++------------------------
 1 file changed, 48 insertions(+), 30 deletions(-)

(limited to 'nix/svg.nix')

diff --git a/nix/svg.nix b/nix/svg.nix
index 3d93ecc..fc1a404 100644
--- a/nix/svg.nix
+++ b/nix/svg.nix
@@ -1,36 +1,47 @@
 {
   runCommand,
   kicad,
+
   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";
 
-  panel,
-}: runCommand "ocularium.svg" {
+in runCommand "${boardName}.svg" {
   nativeBuildInputs = [
     kicad
   ];
 
   src = nix-filter {
-    root = ./..;
-
-    exclude = [
-      "nix"
-      ".gitignore"
-      "flake.nix"
-      "flake.lock"
-      ".envrc"
-      "kikit"
-      "models"
+    root = src;
+
+    include = [
+      (nix-filter.matchExt "kicad_pcb")
     ];
   };
 
+  nInnerLayer = if nLayer < 2 then 0 else nLayer - 2;
+
   allowedRequisites = [];
 } ''
   set -e
 
   export HOME=$(mktemp -d)
 
-  mkdir -p $out/share/npry/ocularium/svg
-  mkdir -p $out/share/npry/ocularium/panel/svg
+  echo "board: '${boardName}'" >&2
+
+  mkdir -p $out/${sharePath}
+  cd "$out/${sharePath}"
 
   mksvg() {
     local infile=$1
@@ -38,27 +49,34 @@
     local outfile=$3
 
     kicad-cli pcb export svg \
-      "$infile.kicad_pcb" \
+      "$infile" \
       -l "$layers" \
-      -o $outfile.svg \
+      -o "$outfile.svg" \
       --page-size-mode 2 \
       --exclude-drawing-sheet
-  }
-
-  readonly okm="$src/okm"
-  readonly panel="${panel}/share/npry/ocularium/panel"
 
-  cd $out/share/npry/ocularium/svg
+  ${if withMirrors then ''
+    kicad-cli pcb export svg \
+      "$infile" \
+      -m \
+      -l "$layers" \
+      -o "$outfile.mirror.svg" \
+      --page-size-mode 2 \
+      --exclude-drawing-sheet
+  '' else ""}
+  }
 
-  mksvg "$okm"    "F.Cu,F.Silkscreen,Edge.Cuts"  front
-  mksvg "$okm"    "B.Cu,B.Silkscreen,Edge.Cuts"  back
-  mksvg "$okm"    "In1.Cu,Edge.Cuts"             in1
-  mksvg "$okm"    "In2.Cu,Edge.Cuts"             in2
+  mksvg "$src/${pcb_path}"  \
+    "F.Cu,${if withSilk then "F.Silkscreen," else ""}${if withEdgeCuts then "Edge.Cuts," else ""}" \
+    front
 
-  cd ../panel/svg
+  mksvg "$src/${pcb_path}"  \
+    "B.Cu,${if withSilk then "B.Silkscreen," else ""}${if withEdgeCuts then "Edge.Cuts," else ""}" \
+    back
 
-  mksvg "$panel"  "F.Cu,F.Silkscreen,Edge.Cuts"  front
-  mksvg "$panel"  "B.Cu,B.Silkscreen,Edge.Cuts"  back
-  mksvg "$panel"  "In1.Cu,Edge.Cuts"             in1
-  mksvg "$panel"  "In2.Cu,Edge.Cuts"             in2
+  for i in $(seq 1 $nInnerLayer); do
+    mksvg "$src/${pcb_path}"  \
+      "In$i.Cu,${if withEdgeCuts then "Edge.Cuts," else ""}" \
+      "in$i"
+  done
 ''
-- 
cgit v1.3.1