js: use raw mozc.data to for Chrome !macos !windows !ios !harmony (#50)

Author: eagleoflqj

.gitignore

@@ -4,6 +4,7 @@ __pycache__
 /boost*
 *.bz2
 *.xz
-mozc_data.inc
+mozc.data
+cache/mozc_data.inc
 meson-ios-*.ini
 !meson-ios-template.ini

libmozc

@@ -0,0 +1,24 @@
+}}}
+
+#include <fstream>
+
+namespace mozc {
+namespace oss {
+namespace {
+
+inline const EmbeddedFile& GetOssMozcDataSet() {
+  static const EmbeddedFile file = []() -> EmbeddedFile {
+    std::ifstream in("/usr/share/mozc/mozc.data", std::ios::binary | std::ios::ate);
+    std::streamsize size = in.tellg();
+    in.seekg(0, std::ios::beg);
+    static std::vector<char> buffer(size);
+    in.read(buffer.data(), size);
+    return EmbeddedFile{
+      reinterpret_cast<const uint64_t*>(buffer.data()),
+      static_cast<size_t>(size)
+    };
+  }();
+  return file;
+}
+
+const EmbeddedFile& kOssMozcDataSet = GetOssMozcDataSet();

patches/mozc_data.inc

@@ -16,7 +16,10 @@ def configure(self):
         super().configure()
         oss_dir = f'{self.build_}/data_manager/oss'
         ensure('mkdir', ['-p', oss_dir])
-        ensure('ln', ['-sf', f'{ROOT}/cache/mozc_data.inc', f'{oss_dir}/mozc_data.inc'])
+        if PLATFORM == 'js':
+            ensure('ln', ['-sf', f'{ROOT}/patches/mozc_data.inc', f'{oss_dir}/mozc_data.inc'])
+        else:
+            ensure('ln', ['-sf', f'{ROOT}/cache/mozc_data.inc', f'{oss_dir}/mozc_data.inc'])
 
     def install(self):
         super().install()
@@ -26,6 +29,11 @@ def install(self):
         all_libabsl_o = f'$(find {self.build_}/mozc/src/third_party/abseil-cpp -name "*.o" | sort)'
         ensure(ar, ['rc', libabsl_a, all_libabsl_o])
 
+        if PLATFORM == 'js':
+            share_dir = f'{self.dest_dir}{INSTALL_PREFIX}/share/mozc'
+            ensure('mkdir', ['-p', share_dir])
+            ensure('cp', [f'{ROOT}/cache/mozc.data', share_dir])
+
     def pre_package(self):
         if PLATFORM != 'macos':
             ensure('rm', ['-rf', f'{self.dest_dir}{INSTALL_PREFIX}/bin'])
@@ -51,6 +59,11 @@ def pre_package(self):
     patch('libmozc/mozc')
     # Fix RuntimeError: null function or function signature mismatch.
     patch('libmozc/mozc/src/third_party/abseil-cpp')
+    # Use raw data instead of embed data into libmozc.so so that Chrome accepts it
+    # without --enable-features=WebAssemblyUnlimitedSyncCompilation.
+    cache('https://github.com/fcitx-contrib/fcitx5-mozc/releases/download/latest/mozc.data')
+else:
+    cache('https://github.com/fcitx-contrib/fcitx5-mozc/releases/download/latest/mozc_data.inc')
 
 if platform.system() == 'Darwin' and PLATFORM != 'macos':
     steal('libmozc', ('bin',)) # extracted to install dir so need to remove on prepack.
@@ -59,6 +72,4 @@ def pre_package(self):
 if PLATFORM in ('ios', 'js'):
     options.append(f'-DPROTOC_EXECUTABLE={protoc_exe}')
 
-cache('https://github.com/fcitx-contrib/fcitx5-mozc/releases/download/latest/mozc_data.inc')
-
 MozcBuilder('libmozc', options).exec()