Function _RegistryGetValue

tools/gyp/pylib/gyp/MSVSVersion.py:241–268

Use _winreg or reg.exe to obtain the value of a registry key. Using _winreg is preferable because it solves an issue on some corporate environments where access to reg.exe is locked down. However, we still need to fallback to reg.exe for the case where the _winreg module is not availabl

(key, value)

def _RegistryGetValue(key, value):
    """Use _winreg or reg.exe to obtain the value of a registry key.

    Using _winreg is preferable because it solves an issue on some corporate
    environments where access to reg.exe is locked down. However, we still need
    to fallback to reg.exe for the case where the _winreg module is not available
    (for example in cygwin python).

    Args:
      key: The registry key.
      value: The particular registry value to read.
    Return:
      contents of the registry key's value, or None on failure.
    """
    try:
        return _RegistryGetValueUsingWinReg(key, value)
    except ImportError:
        pass

    # Fallback to reg.exe if we fail to import _winreg.
    text = _RegistryQuery(key, value)
    if not text:
        return None
    # Extract value.
    match = re.search(r"REG_\w+\s+([^\r]+)\r\n", text)
    if not match:
        return None
    return match.group(1)


def _CreateVersion(name, path, sdk_based=False):