feat(addpath): implement sassoptions add* path

Author: kwonoj

src/interop/context.ts

@@ -13,10 +13,17 @@ import { wrapSassOptions } from './wrapSassOptions';
  * @param asmModule
  */
 const buildContext = (asmModule: SassAsmModule) => {
-  const { cwrap, FS } = asmModule;
+  const { cwrap, FS, stackAlloc, stringToUTF8 } = asmModule;
   const cwrapCtx = wrapSassContext(cwrap);
   const cwrapOptions = wrapSassOptions(cwrap);
 
+  const allocString = (value: string) => {
+    const len = (value.length << 2) + 1;
+    const ret = stackAlloc(len);
+    stringToUTF8(value, ret, len);
+    return ret;
+  };
+
   const nodePathId = `/${nanoid(45)}`;
   FS.mkdir(nodePathId);
   log(`buildContext: root mounting point created`, { nodePathId });
@@ -26,7 +33,7 @@ const buildContext = (asmModule: SassAsmModule) => {
 
   return {
     options: {
-      create: () => new SassOptions(cwrapCtx, cwrapOptions, mountPath, unmountPath) as SassOptionsInterface
+      create: () => new SassOptions(cwrapCtx, cwrapOptions, mountPath, unmountPath, allocString) as SassOptionsInterface
     }
   };
 };

src/interop/sassOptions.ts

@@ -85,7 +85,8 @@ class SassOptions implements SassOptionsInterface {
     private readonly cwrapCtx: ReturnType<typeof wrapSassContext>,
     private readonly cwrapOptions: ReturnType<typeof wrapSassOptions>,
     private readonly mount: ReturnType<typeof mountDirectory>,
-    private readonly unmountPath: ReturnType<typeof unmount>
+    private readonly unmountPath: ReturnType<typeof unmount>,
+    private readonly allocString: (value: string) => number
   ) {
     this.sassOptionsPtr = cwrapCtx.make_options();
     log(`SassOptions: created new instance`, { sassOptionsPtr: this.sassOptionsPtr });
@@ -130,13 +131,17 @@ class SassOptions implements SassOptionsInterface {
   }
 
   public addIncludePath(includePath: string): void {
-    this.mount(includePath);
-    //TODO: allocate string
-    //this.cwrapOptions.option_push_include_path(this.sassOptionsPtr);
+    const mounted = this.mount(includePath);
+    this.mountedPath.push(mounted);
+
+    this.cwrapOptions.option_push_include_path(this.sassOptionsPtr, this.allocString(mounted));
   }
 
-  public addPluginPath(_pluginPath: string): void {
-    //this.cwrapOptions.option_push_plugin_path(this.sassOptionsPtr);
+  public addPluginPath(pluginPath: string): void {
+    const mounted = this.mount(pluginPath);
+    this.mountedPath.push(mounted);
+
+    this.cwrapOptions.option_push_plugin_path(this.sassOptionsPtr, this.allocString(mounted));
   }
 
   public dispose(): void {

src/interop/wrapSassOptions.ts

@@ -116,9 +116,16 @@ const wrapSassOptions = (cwrap: cwrapSignature) => ({
   option_set_importer: null,
 
   //void sass_option_push_plugin_path (struct Sass_Options* options, const char* path);
-  option_push_plugin_path: null,
+  option_push_plugin_path: cwrap<(sassOptionsPtr: number, path: number) => void>(`sass_option_push_plugin_path`, null, [
+    'number',
+    'number'
+  ]),
   //void sass_option_push_include_path (struct Sass_Options* options, const char* path);
-  option_push_include_path: null,
+  option_push_include_path: cwrap<(sassOptionsPtr: number, path: number) => void>(
+    `sass_option_push_include_path`,
+    null,
+    ['number', 'number']
+  ),
 
   //char* sass_find_file (const char* path, struct Sass_Options* opt);
   find_file: null,