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# ------------------------------------------------------------------------------
# pycparser: test_util.py
#
# Utility code for tests.
#
# Eli Bendersky [https://eli.thegreenplace.net/]
# This file contributed by vit9696@users.noreply.github.com
# License: BSD
# ------------------------------------------------------------------------------
import os
import platform
import subprocess
import sys
def cpp_supported():
"""Is cpp (the C preprocessor) supported as a native command?"""
return platform.system() == "Linux"
def cpp_path():
"""Path to cpp command."""
if platform.system() == "Darwin":
return "gcc"
return "cpp"
def cpp_args(args=[]):
"""Turn args into a suitable format for passing to cpp."""
if isinstance(args, str):
args = [args]
if platform.system() == "Darwin":
return ["-E"] + args
return args
def _bytes2str(b):
return b.decode("latin-1")
def run_exe(exe_path, args=[], echo=False):
"""Runs the given executable as a subprocess, given the
list of arguments. Captures its return code (rc) and stdout and
returns a tuple: rc, stdout, stderr
"""
popen_cmd = [exe_path] + args
if os.path.splitext(exe_path)[1] == ".py":
popen_cmd.insert(0, sys.executable)
if echo:
print("[cmd]", " ".join(popen_cmd))
proc = subprocess.Popen(popen_cmd, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
stdout, stderr = proc.communicate()
return proc.returncode, _bytes2str(stdout), _bytes2str(stderr)
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