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import os
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 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 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))
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