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#!/usr/bin/python
import os, sys, subprocess
abspath = os.path.abspath(os.path.dirname(__file__))
def path_from_root(*pathelems):
return os.path.join(os.path.sep, *(abspath.split(os.sep) + list(pathelems)))
exec(open(path_from_root('tools', 'shared.py'), 'r').read())
COMPILER = path_from_root('src', 'compiler.js')
def emscripten(filename, settings, outfile):
data = open(filename, 'r').read()
try:
cwd = os.getcwd()
except:
cwd = None
os.chdir(os.path.dirname(COMPILER))
subprocess.Popen(COMPILER_ENGINE + [COMPILER], stdin=subprocess.PIPE, stdout=outfile, stderr=subprocess.STDOUT).communicate(settings+'\n'+data)
if outfile: outfile.close()
if cwd is not None:
os.chdir(cwd)
if __name__ == '__main__':
if sys.argv.__len__() not in range(2,6):
print '''
Emscripten usage: emscripten.py INFILE [SETTINGS] [OUTPUT_FILE]
INFILE must be in human-readable LLVM disassembly form (i.e., as text,
not binary).
SETTINGS is an optional set of compiler settings, overriding the defaults,
in JSON format. See src/settings.js.
OUTPUT_FILE is the file to create with the output. If not given, we write
to stdout.
You should have an ~/.emscripten file set up, see tests/settings.py, which
in particular includes COMPILER_ENGINE.
'''
else:
settings = sys.argv[2] if len(sys.argv) >= 3 else "{}"
outfile = open(sys.argv[3], 'w') if len(sys.argv) >= 4 else None
emscripten(sys.argv[1], settings, outfile)
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