Transform paths from win32 seps to posix as expected by CMake (#132)

* Transform paths from win32 seps to posix as expected by CMake

* Update packages/gyp-to-cmake/src/transformer.test.ts

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

---------

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

Author: kraenhansen

packages/cmake-rn/src/weak-node-api.ts

@@ -11,6 +11,10 @@ import {
 import { ANDROID_ARCHITECTURES } from "./android.js";
 import { getNodeAddonHeadersPath, getNodeApiHeadersPath } from "./headers.js";
 
+export function toCmakePath(input: string) {
+  return input.split(path.win32.sep).join(path.posix.sep);
+}
+
 export function getWeakNodeApiPath(triplet: SupportedTriplet): string {
   const { pathname } = new URL(
     import.meta.resolve("react-native-node-api/weak-node-api")

packages/gyp-to-cmake/src/cli.ts

@@ -57,15 +57,17 @@ export function transformBindingGypsRecursively(
 
 export const program = new Command("gyp-to-cmake")
   .description("Transform binding.gyp to CMakeLists.txt")
+  .option("--no-path-transforms", "Don't transform output from command expansions (replacing '\\' with '/')")
   .argument(
     "[path]",
     "Path to the binding.gyp file or directory to traverse recursively",
     process.cwd()
   )
-  .action((targetPath: string) => {
+  .action((targetPath: string, { pathTransforms }) => {
     const options: TransformOptions = {
       unsupportedBehaviour: "throw",
       disallowUnknownProperties: false,
+      transformWinPathsToPosix: pathTransforms,
     };
     const stat = fs.statSync(targetPath);
     if (stat.isFile()) {

packages/gyp-to-cmake/src/transformer.test.ts

@@ -33,6 +33,22 @@ describe("bindingGypToCmakeLists", () => {
     assert(output.includes("add_library(bar SHARED bar.cc"));
   });
 
+  it("transform \\ to / in source filenames", () => {
+    const output = bindingGypToCmakeLists({
+      projectName: "some-project",
+      gyp: {
+        targets: [
+          {
+            target_name: "foo",
+            sources: ["file\\with\\win32\\separator.cc"],
+          },
+        ],
+      },
+    });
+
+    assert(output.includes("add_library(foo SHARED file/with/win32/separator.cc"));
+  });
+
   it("escapes spaces in source filenames", () => {
     const output = bindingGypToCmakeLists({
       projectName: "some-project",

packages/gyp-to-cmake/src/transformer.ts

@@ -1,4 +1,5 @@
 import cp from "node:child_process";
+import path from "node:path";
 
 import type { GypBinding } from "./gyp.js";
 
@@ -10,6 +11,7 @@ export type GypToCmakeListsOptions = {
   napiVersion?: number;
   executeCmdExpansions?: boolean;
   unsupportedBehaviour?: "skip" | "warn" | "throw";
+  transformWinPathsToPosix?: boolean;
 };
 
 function isCmdExpansion(value: string) {
@@ -31,6 +33,7 @@ export function bindingGypToCmakeLists({
   napiVersion = DEFAULT_NAPI_VERSION,
   executeCmdExpansions = true,
   unsupportedBehaviour = "skip",
+  transformWinPathsToPosix = true,
 }: GypToCmakeListsOptions): string {
   function mapExpansion(value: string): string[] {
     if (!isCmdExpansion(value)) {
@@ -48,6 +51,14 @@ export function bindingGypToCmakeLists({
     return [value];
   }
 
+  function transformPath(input: string) {
+    if (transformWinPathsToPosix) {
+      return input.split(path.win32.sep).join(path.posix.sep);
+    } else {
+      return input;
+    }
+  }
+
   const lines: string[] = [
     "cmake_minimum_required(VERSION 3.15)",
     //"cmake_policy(SET CMP0091 NEW)",
@@ -67,11 +78,13 @@ export function bindingGypToCmakeLists({
 
     const escapedJoinedSources = target.sources
       .flatMap(mapExpansion)
+      .map(transformPath)
       .map(escapePath)
       .join(" ");
 
     const escapedJoinedIncludes = (target.include_dirs || [])
       .flatMap(mapExpansion)
+      .map(transformPath)
       .map(escapePath)
       .join(" ");