#!/usr/bin/env python

import re
import subprocess
import sys

llvm_cov_bin = "@LLVM_COV_BIN@"

# The wrapper must return the version for the "-v" and "--version" flags.
# llvm-cov only accepts --version
if any(h in sys.argv for h in ("-v", "--version",)):
    p = subprocess.Popen([llvm_cov_bin, "--version"], stdout=subprocess.PIPE)
    output = p.stdout.read().decode("utf8")
    p.wait()
    assert p.returncode == 0
    versionmatch = re.search("([0-9]+\\.[0-9]+(?:\\.[0-9]+))", output)
    if not versionmatch:
        raise RuntimeError("Cannot detect version")
    print(versionmatch)
    print("{} version {}".format(sys.argv[0], versionmatch.group(1)))
    sys.exit(0)

p = subprocess.Popen([llvm_cov_bin, "gcov"] + sys.argv[1:])
p.wait()
assert p.returncode == 0