import sys
import os
import re

config.hipify_install_path = "@CMAKE_INSTALL_PREFIX@"
config.hipify_clang_tests_only = "@HIPIFY_CLANG_TESTS_ONLY@"
config.pointer_size = @CMAKE_SIZEOF_VOID_P@
config.llvm_version = "@LLVM_PACKAGE_VERSION@"
config.llvm_version_major = int("@LLVM_VERSION_MAJOR@")
config.llvm_tools_dir = "@LLVM_TOOLS_BINARY_DIR@"
config.obj_root = "@CMAKE_CURRENT_BINARY_DIR@"
config.cuda_root = "@CUDA_TOOLKIT_ROOT_DIR@"
config.cuda_sdk_root = "@CUDA_SDK_ROOT_DIR@"
config.cuda_dnn_root = "@CUDA_DNN_ROOT_DIR@"
config.cuda_cub_root = "@CUDA_CUB_ROOT_DIR@"
config.cuda_tensor_root = "@CUDA_TENSOR_ROOT_DIR@"
config.cuda_file_root = "@CUDA_FILE_ROOT_DIR@"
config.cuda_version_major = int("@CUDA_VERSION_MAJOR@")
config.cuda_version_minor = int("@CUDA_VERSION_MINOR@")
config.cuda_version_full = "@CUDA_VERSION_FULL@"
config.cuda_version = "@CUDA_VERSION@"
config.clang_resource_dir = "@HIPIFY_CLANG_RES@"
if sys.platform in ['win32']:
    config.build_type = "@CMAKE_BUILD_TYPE@"
    if not config.build_type:
        config.build_type = "Debug"

pattern_major = r'_MAJOR ([1-9]|1[0-9])'

def get_lib_major_ver(file_name):
    if os.path.isfile(file_name):
        with open(file_name, 'r') as f:
            match = re.search(pattern_major, f.read())
        if match:
            s = match.group(0)[7:]
            return int(s)
    return 0

def get_cudnn_major_ver():
    ver_file = config.cuda_dnn_root + '/cudnn_version.h'
    ver = get_lib_major_ver(ver_file)
    if ver == 0:
        ver_file = config.cuda_dnn_root + '/cudnn_version_v9.h'
        ver = get_lib_major_ver(ver_file)
    if ver == 0:
        ver_file = config.cuda_dnn_root + '/cudnn_version_v999.h'
        ver = get_lib_major_ver(ver_file)
    return int(ver)

def get_cutensor_major_ver():
    ver_file = config.cuda_tensor_root + '/cutensor.h'
    ver = get_lib_major_ver(ver_file)
    if ver == 0:
        ver = 1
    return ver

if config.cuda_dnn_root and config.cuda_dnn_root != "OFF":
    config.cudnn_version_major = get_cudnn_major_ver()

if config.cuda_tensor_root and config.cuda_tensor_root != "OFF":
    config.cutensor_version_major = get_cutensor_major_ver()

# Support substitution of the tools and libs dirs with user parameters. This is
# used when we can't determine the tool dir at configuration time.
try:
    config.llvm_tools_dir = config.llvm_tools_dir % lit_config.params
    config.obj_root = config.obj_root % lit_config.params
except KeyError:
    e = sys.exc_info()[1]
    key, = e.args
    lit_config.fatal("unable to find %r parameter, use '--param=%s=VALUE'" % (key,key))