1 files changed, 128 insertions, 0 deletions
diff --git a/platform/web/emscripten_helpers.py b/platform/web/emscripten_helpers.py
new file mode 100644
index 0000000000..b7b1026ef7
--- /dev/null
+++ b/platform/web/emscripten_helpers.py
@@ -0,0 +1,128 @@
+import os, json
+
+from SCons.Util import WhereIs
+
+
+def run_closure_compiler(target, source, env, for_signature):
+    closure_bin = os.path.join(os.path.dirname(WhereIs("emcc")), "node_modules", ".bin", "google-closure-compiler")
+    cmd = [WhereIs("node"), closure_bin]
+    cmd.extend(["--compilation_level", "ADVANCED_OPTIMIZATIONS"])
+    for f in env["JSEXTERNS"]:
+        cmd.extend(["--externs", f.get_abspath()])
+    for f in source:
+        cmd.extend(["--js", f.get_abspath()])
+    cmd.extend(["--js_output_file", target[0].get_abspath()])
+    return " ".join(cmd)
+
+
+def get_build_version():
+    import version
+
+    name = "custom_build"
+    if os.getenv("BUILD_NAME") != None:
+        name = os.getenv("BUILD_NAME")
+    v = "%d.%d" % (version.major, version.minor)
+    if version.patch > 0:
+        v += ".%d" % version.patch
+    status = version.status
+    if os.getenv("GODOT_VERSION_STATUS") != None:
+        status = str(os.getenv("GODOT_VERSION_STATUS"))
+    v += ".%s.%s" % (status, name)
+    return v
+
+
+def create_engine_file(env, target, source, externs):
+    if env["use_closure_compiler"]:
+        return env.BuildJS(target, source, JSEXTERNS=externs)
+    return env.Textfile(target, [env.File(s) for s in source])
+
+
+def create_template_zip(env, js, wasm, extra):
+    binary_name = "godot.tools" if env["tools"] else "godot"
+    zip_dir = env.Dir("#bin/.web_zip")
+    in_files = [
+        js,
+        wasm,
+        "#platform/web/js/libs/audio.worklet.js",
+    ]
+    out_files = [
+        zip_dir.File(binary_name + ".js"),
+        zip_dir.File(binary_name + ".wasm"),
+        zip_dir.File(binary_name + ".audio.worklet.js"),
+    ]
+    # GDNative/Threads specific
+    if env["gdnative_enabled"]:
+        in_files.append(extra.pop())  # Runtime
+        out_files.append(zip_dir.File(binary_name + ".side.wasm"))
+    if env["threads_enabled"]:
+        in_files.append(extra.pop())  # Worker
+        out_files.append(zip_dir.File(binary_name + ".worker.js"))
+
+    service_worker = "#misc/dist/html/service-worker.js"
+    if env["tools"]:
+        # HTML
+        html = "#misc/dist/html/editor.html"
+        cache = [
+            "godot.tools.html",
+            "offline.html",
+            "godot.tools.js",
+            "godot.tools.worker.js",
+            "godot.tools.audio.worklet.js",
+            "logo.svg",
+            "favicon.png",
+        ]
+        opt_cache = ["godot.tools.wasm"]
+        subst_dict = {
+            "@GODOT_VERSION@": get_build_version(),
+            "@GODOT_NAME@": "GodotEngine",
+            "@GODOT_CACHE@": json.dumps(cache),
+            "@GODOT_OPT_CACHE@": json.dumps(opt_cache),
+            "@GODOT_OFFLINE_PAGE@": "offline.html",
+        }
+        html = env.Substfile(target="#bin/godot${PROGSUFFIX}.html", source=html, SUBST_DICT=subst_dict)
+        in_files.append(html)
+        out_files.append(zip_dir.File(binary_name + ".html"))
+        # And logo/favicon
+        in_files.append("#misc/dist/html/logo.svg")
+        out_files.append(zip_dir.File("logo.svg"))
+        in_files.append("#icon.png")
+        out_files.append(zip_dir.File("favicon.png"))
+        # PWA
+        service_worker = env.Substfile(
+            target="#bin/godot${PROGSUFFIX}.service.worker.js", source=service_worker, SUBST_DICT=subst_dict
+        )
+        in_files.append(service_worker)
+        out_files.append(zip_dir.File("service.worker.js"))
+        in_files.append("#misc/dist/html/manifest.json")
+        out_files.append(zip_dir.File("manifest.json"))
+        in_files.append("#misc/dist/html/offline.html")
+        out_files.append(zip_dir.File("offline.html"))
+    else:
+        # HTML
+        in_files.append("#misc/dist/html/full-size.html")
+        out_files.append(zip_dir.File(binary_name + ".html"))
+        in_files.append(service_worker)
+        out_files.append(zip_dir.File(binary_name + ".service.worker.js"))
+        in_files.append("#misc/dist/html/offline-export.html")
+        out_files.append(zip_dir.File("godot.offline.html"))
+
+    zip_files = env.InstallAs(out_files, in_files)
+    env.Zip(
+        "#bin/godot",
+        zip_files,
+        ZIPROOT=zip_dir,
+        ZIPSUFFIX="${PROGSUFFIX}${ZIPSUFFIX}",
+        ZIPCOMSTR="Archiving $SOURCES as $TARGET",
+    )
+
+
+def add_js_libraries(env, libraries):
+    env.Append(JS_LIBS=env.File(libraries))
+
+
+def add_js_pre(env, js_pre):
+    env.Append(JS_PRE=env.File(js_pre))
+
+
+def add_js_externs(env, externs):
+    env.Append(JS_EXTERNS=env.File(externs))