Basic KLE support

src/io.js

@@ -0,0 +1,78 @@
+const json5 = require('json5')
+const yaml = require('js-yaml')
+const makerjs = require('makerjs')
+const jscad = require('@jscad/openjscad')
+
+const u = require('./utils')
+const a = require('./assert')
+const kle = require('./kle')
+
+exports.interpret = (raw, logger) => {
+    let config
+    let format
+    if (a.type(raw)() != 'object') {
+        try {
+            config = yaml.safeLoad(raw)
+            format = 'YAML'
+        } catch (yamlex) {
+            try {
+                config = json5.parse(raw)
+                format = 'JSON'
+            } catch (jsonex) {
+                try {
+                    config = new Function(raw)()
+                    format = 'JS Code'
+                } catch (codeex) {
+                    logger('YAML exception:', yamlex)
+                    logger('JSON exception:', jsonex)
+                    logger('Code exception:', codeex)
+                    throw new Error('Input is not valid YAML, JSON, or JS Code!')
+                }
+            }
+        }
+        if (!config) {
+            throw new Error('Input appears to be empty!')
+        }
+    }
+    
+    try {
+        // assume it's KLE and try to convert it
+        // if it's not, it'll throw anyway
+        return kle.convert(config, logger)
+    } catch (kleex) {
+        return [config, format]
+    }
+}
+
+exports.twodee = (model, debug) => {
+    const assembly = makerjs.model.originate({
+        models: {
+            export: u.deepcopy(model)
+        },
+        units: 'mm'
+    })
+
+    const result = {
+        dxf: makerjs.exporter.toDXF(assembly),
+    }
+    if (debug) {
+        result.json = assembly
+        result.svg = makerjs.exporter.toSVG(assembly)
+    }
+    return result
+}
+
+exports.threedee = async (script, debug) => {
+    const compiled = await new Promise((resolve, reject) => {
+        jscad.compile(script, {}).then(compiled => {
+            resolve(compiled)
+        })
+    })
+    const result = {
+        stl: jscad.generateOutput('stla', compiled).asBuffer()
+    }
+    if (debug) {
+        result.jscad = script
+    }
+    return result
+}