feat: initial schematic support - wires

src/easyeda-types.ts

@@ -1,5 +1,17 @@
 // Generated by https://quicktype.io
 
+export interface IEasyEDASchematicCollection {
+  schematics: Array<{ dataStr: string }>;
+}
+
+export interface IEasyEDASchematic {
+  head: Head;
+  canvas: string;
+  shape: string[];
+  BBox: BBox;
+  colors: {};
+}
+
 export interface IEasyEDABoard {
   head: Head;
   canvas: string;

src/main.ts

@@ -2,6 +2,7 @@
 
 import * as fs from 'fs';
 import { convertBoard } from './board';
+import { convertSchematic } from './schematic';
 
 if (process.argv.length < 3) {
   console.error(`Usage: ${process.argv[1]} <input.json> [output.kicad_pcb]`);
@@ -15,9 +16,10 @@ if (process.argv[2] === '-v') {
 }
 
 const input = JSON.parse(fs.readFileSync(process.argv[2], 'utf-8'));
+const output = input.docType === '5' ? convertSchematic(input) : convertBoard(input);
 const outputFile = process.argv[3];
 if (outputFile && outputFile !== '-') {
-  fs.writeFileSync(outputFile, convertBoard(input));
+  fs.writeFileSync(outputFile, output);
 } else {
-  process.stdout.write(convertBoard(input));
+  process.stdout.write(output);
 }

src/schematic.ts

@@ -0,0 +1,60 @@
+// Doc: https://docs.easyeda.com/en/DocumentFormat/2-EasyEDA-Schematic-File-Format/index.html
+import { IEasyEDASchematic, IEasyEDASchematicCollection } from './easyeda-types';
+
+function kiUnits(value: string | number) {
+  if (typeof value === 'string') {
+    value = parseFloat(value);
+  }
+  return value * 11;
+}
+
+function flatten<T>(arr: T[]) {
+  return [].concat(...arr);
+}
+
+function convertWire(args: string[]) {
+  const [points, strokeColor, strokeWidth, strokeStyle, fillColor, id, locked] = args;
+  const coordList = points.split(' ');
+  const result = [];
+  for (let i = 0; i < coordList.length - 2; i += 2) {
+    result.push('Wire Wire Line');
+    result.push(
+      '    ' +
+        coordList
+          .slice(i, i + 4)
+          .map(kiUnits)
+          .join(' ')
+    );
+  }
+  return result;
+}
+
+function convertShape(shape: string) {
+  const [type, ...args] = shape.split('~');
+  switch (type) {
+    case 'W':
+      return convertWire(args);
+    default:
+      console.warn(`Warning: unsupported shape ${type}`);
+      return [];
+  }
+}
+
+export function convertSchematic(input: IEasyEDASchematicCollection) {
+  const { schematics } = input;
+  if (schematics.length !== 1) {
+    console.warn(`Found ${schematics.length} schematics, converting only the first one.`);
+  }
+
+  const schematic = JSON.parse(schematics[0].dataStr) as IEasyEDASchematic;
+  const shapeArray = schematic.shape;
+  const shapeResult = flatten(shapeArray.map(convertShape)).join('\n');
+
+  return `
+EESchema Schematic File Version 4
+EELAYER 30 0
+EELAYER END
+${shapeResult}
+$EndSCHEMATC
+`.trim();
+}