createSharedHeaders function

void createSharedHeaders(String nitroNativePath, { String baseDir = '.', })

Implementation

void createSharedHeaders(String nitroNativePath, {String baseDir = '.'}) {
  Directory(p.join(baseDir, 'src')).createSync(recursive: true);
  final localNativeDir = Directory(p.join(baseDir, 'src', 'native'));
  localNativeDir.createSync(recursive: true);
  Directory(p.join(localNativeDir.path, 'internal')).createSync(recursive: true);
  final srcFile = File(p.join(nitroNativePath, 'nitro.h'));

  // If the source nitro.h is missing the required macros, update it first.
  if (srcFile.existsSync()) {
    final current = srcFile.readAsStringSync();
    if (!current.contains('NITRO_EXPORT')) {
      srcFile.writeAsStringSync(nitroHContent);
    }
  } else {
    // If it doesn't exist in the nitro package at all, create it.
    try {
      srcFile.createSync(recursive: true);
      srcFile.writeAsStringSync(nitroHContent);
    } catch (_) {
      // Might not have write access to the installed package; that's fine,
      // we'll write to the local project.
    }
  }

  // Always write the correct content to the local project directories.
  File(p.join(baseDir, 'src', 'nitro.h')).writeAsStringSync(nitroHContent);
  File(p.join(localNativeDir.path, 'nitro.h')).writeAsStringSync(nitroHContent);
  for (final headerName in ['dart_api_dl.h', 'dart_api.h', 'dart_native_api.h', 'dart_version.h', 'nitro_wasm_compat.h']) {
    final src = File(p.join(nitroNativePath, headerName));
    if (src.existsSync()) src.copySync(p.join(localNativeDir.path, headerName));
  }
  final implHeader = File(p.join(nitroNativePath, 'internal', 'dart_api_dl_impl.h'));
  if (implHeader.existsSync()) {
    implHeader.copySync(p.join(localNativeDir.path, 'internal', 'dart_api_dl_impl.h'));
  }
  if (Directory(p.join(baseDir, 'ios', 'Classes')).existsSync()) {
    File(
      p.join(baseDir, 'ios', 'Classes', 'nitro.h'),
    ).writeAsStringSync(nitroHContent);
  }
  if (Directory(p.join(baseDir, 'macos', 'Classes')).existsSync()) {
    File(
      p.join(baseDir, 'macos', 'Classes', 'nitro.h'),
    ).writeAsStringSync(nitroHContent);
  }
  File(
    p.join(baseDir, 'src', 'dart_api_dl.c'),
  ).writeAsStringSync(bundledDartApiDlContent);

  // Also populate any existing SPM C++ target include/ dirs (nested layout:
  // {platform}/<pluginName>/Sources/<ClassName>Cpp/include/).
  for (final platform in ['ios', 'macos']) {
    final platformDir = Directory(p.join(baseDir, platform));
    if (!platformDir.existsSync()) continue;
    for (final entry in platformDir.listSync().whereType<Directory>()) {
      final sourcesDir = Directory(p.join(entry.path, 'Sources'));
      if (!sourcesDir.existsSync()) continue;
      final packageSwift = File(p.join(entry.path, 'Package.swift'));
      final packageSwiftContent = packageSwift.existsSync() ? packageSwift.readAsStringSync() : '';
      final pluginClass = _toPascalCase(p.basename(entry.path));
      for (final targetDir in sourcesDir.listSync().whereType<Directory>()) {
        final targetName = p.basename(targetDir.path);
        if (!targetName.endsWith('Cpp')) continue;
        // A per-module target that depends on the plugin-level `<Class>Cpp`
        // target resolves these headers through it, and link/apple.dart deletes
        // any copies there — planting them here flipped the same five files on
        // every generate/link pair. Same predicate as the deletion.
        final moduleClass = targetName.substring(0, targetName.length - 3);
        if (targetName != '${pluginClass}Cpp' && _spmModuleDependsOnPluginCpp(packageSwiftContent, moduleClass, pluginClass)) continue;
        final includeDir = Directory(p.join(targetDir.path, 'include'));
        if (!includeDir.existsSync()) continue;
        // Write nitro.h with the correct guard-protected content.
        File(p.join(includeDir.path, 'nitro.h')).writeAsStringSync(nitroHContent);
        // Copy dart API headers from the nitro native source. NOT
        // nitro_wasm_compat.h: SwiftPM compiles every header in include/, and
        // that one #errors outside Emscripten. link/apple.dart deletes stale
        // copies; copying it here re-planted it on every generate.
        for (final headerName in ['dart_api_dl.h', 'dart_api.h', 'dart_native_api.h', 'dart_version.h']) {
          final src = File(p.join(nitroNativePath, headerName));
          if (src.existsSync()) src.copySync(p.join(includeDir.path, headerName));
        }
      }
    }
  }
}