| #!/usr/bin/env python |
| # |
| # Copyright (C) 2016 The Android Open Source Project |
| # |
| # Licensed under the Apache License, Version 2.0 (the "License"); |
| # you may not use this file except in compliance with the License. |
| # You may obtain a copy of the License at |
| # |
| # http://www.apache.org/licenses/LICENSE-2.0 |
| # |
| # Unless required by applicable law or agreed to in writing, software |
| # distributed under the License is distributed on an "AS IS" BASIS, |
| # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| # See the License for the specific language governing permissions and |
| # limitations under the License. |
| # |
| |
| """utils.py: export utility functions. |
| """ |
| |
| from __future__ import print_function |
| import logging |
| import os |
| import os.path |
| import re |
| import shutil |
| import subprocess |
| import sys |
| import time |
| |
| def get_script_dir(): |
| return os.path.dirname(os.path.realpath(__file__)) |
| |
| def is_windows(): |
| return sys.platform == 'win32' or sys.platform == 'cygwin' |
| |
| def is_darwin(): |
| return sys.platform == 'darwin' |
| |
| def get_platform(): |
| if is_windows(): |
| return 'windows' |
| if is_darwin(): |
| return 'darwin' |
| return 'linux' |
| |
| def is_python3(): |
| return sys.version_info >= (3, 0) |
| |
| |
| def log_debug(msg): |
| logging.debug(msg) |
| |
| |
| def log_info(msg): |
| logging.info(msg) |
| |
| |
| def log_warning(msg): |
| logging.warning(msg) |
| |
| |
| def log_fatal(msg): |
| raise Exception(msg) |
| |
| def log_exit(msg): |
| sys.exit(msg) |
| |
| def disable_debug_log(): |
| logging.getLogger().setLevel(logging.WARN) |
| |
| def str_to_bytes(str): |
| if not is_python3(): |
| return str |
| # In python 3, str are wide strings whereas the C api expects 8 bit strings, |
| # hence we have to convert. For now using utf-8 as the encoding. |
| return str.encode('utf-8') |
| |
| def bytes_to_str(bytes): |
| if not is_python3(): |
| return bytes |
| return bytes.decode('utf-8') |
| |
| def get_target_binary_path(arch, binary_name): |
| if arch == 'aarch64': |
| arch = 'arm64' |
| arch_dir = os.path.join(get_script_dir(), "bin", "android", arch) |
| if not os.path.isdir(arch_dir): |
| log_fatal("can't find arch directory: %s" % arch_dir) |
| binary_path = os.path.join(arch_dir, binary_name) |
| if not os.path.isfile(binary_path): |
| log_fatal("can't find binary: %s" % binary_path) |
| return binary_path |
| |
| |
| def get_host_binary_path(binary_name): |
| dir = os.path.join(get_script_dir(), 'bin') |
| if is_windows(): |
| if binary_name.endswith('.so'): |
| binary_name = binary_name[0:-3] + '.dll' |
| elif '.' not in binary_name: |
| binary_name += '.exe' |
| dir = os.path.join(dir, 'windows') |
| elif sys.platform == 'darwin': # OSX |
| if binary_name.endswith('.so'): |
| binary_name = binary_name[0:-3] + '.dylib' |
| dir = os.path.join(dir, 'darwin') |
| else: |
| dir = os.path.join(dir, 'linux') |
| dir = os.path.join(dir, 'x86_64' if sys.maxsize > 2 ** 32 else 'x86') |
| binary_path = os.path.join(dir, binary_name) |
| if not os.path.isfile(binary_path): |
| log_fatal("can't find binary: %s" % binary_path) |
| return binary_path |
| |
| |
| def is_executable_available(executable, option='--help'): |
| """ Run an executable to see if it exists. """ |
| try: |
| subproc = subprocess.Popen([executable, option], stdout=subprocess.PIPE, |
| stderr=subprocess.PIPE) |
| subproc.communicate() |
| return subproc.returncode == 0 |
| except: |
| return False |
| |
| DEFAULT_NDK_PATH = { |
| 'darwin': 'Library/Android/sdk/ndk-bundle', |
| 'linux': 'Android/Sdk/ndk-bundle', |
| 'windows': 'AppData/Local/Android/sdk/ndk-bundle', |
| } |
| |
| EXPECTED_TOOLS = { |
| 'adb': { |
| 'is_binutils': False, |
| 'test_option': 'version', |
| 'path_in_ndk': '../platform-tools/adb', |
| }, |
| 'readelf': { |
| 'is_binutils': True, |
| 'accept_tool_without_arch': True, |
| }, |
| 'addr2line': { |
| 'is_binutils': True, |
| 'accept_tool_without_arch': True |
| }, |
| 'objdump': { |
| 'is_binutils': True, |
| }, |
| } |
| |
| def _get_binutils_path_in_ndk(toolname, arch, platform): |
| if not arch: |
| arch = 'arm64' |
| if arch == 'arm64': |
| name = 'aarch64-linux-android-' + toolname |
| path = 'toolchains/aarch64-linux-android-4.9/prebuilt/%s-x86_64/bin/%s' % (platform, name) |
| elif arch == 'arm': |
| name = 'arm-linux-androideabi-' + toolname |
| path = 'toolchains/arm-linux-androideabi-4.9/prebuilt/%s-x86_64/bin/%s' % (platform, name) |
| elif arch == 'x86_64': |
| name = 'x86_64-linux-android-' + toolname |
| path = 'toolchains/x86_64-4.9/prebuilt/%s-x86_64/bin/%s' % (platform, name) |
| elif arch == 'x86': |
| name = 'i686-linux-android-' + toolname |
| path = 'toolchains/x86-4.9/prebuilt/%s-x86_64/bin/%s' % (platform, name) |
| else: |
| log_fatal('unexpected arch %s' % arch) |
| return (name, path) |
| |
| def find_tool_path(toolname, ndk_path=None, arch=None): |
| if toolname not in EXPECTED_TOOLS: |
| return None |
| tool_info = EXPECTED_TOOLS[toolname] |
| is_binutils = tool_info['is_binutils'] |
| test_option = tool_info.get('test_option', '--help') |
| platform = get_platform() |
| if is_binutils: |
| toolname_with_arch, path_in_ndk = _get_binutils_path_in_ndk(toolname, arch, platform) |
| else: |
| toolname_with_arch = toolname |
| path_in_ndk = tool_info['path_in_ndk'] |
| path_in_ndk = path_in_ndk.replace('/', os.sep) |
| |
| # 1. Find tool in the given ndk path. |
| if ndk_path: |
| path = os.path.join(ndk_path, path_in_ndk) |
| if is_executable_available(path, test_option): |
| return path |
| |
| # 2. Find tool in the ndk directory containing simpleperf scripts. |
| path = os.path.join('..', path_in_ndk) |
| if is_executable_available(path, test_option): |
| return path |
| |
| # 3. Find tool in the default ndk installation path. |
| home = os.environ.get('HOMEPATH') if is_windows() else os.environ.get('HOME') |
| if home: |
| default_ndk_path = os.path.join(home, DEFAULT_NDK_PATH[platform].replace('/', os.sep)) |
| path = os.path.join(default_ndk_path, path_in_ndk) |
| if is_executable_available(path, test_option): |
| return path |
| |
| # 4. Find tool in $PATH. |
| if is_executable_available(toolname_with_arch, test_option): |
| return toolname_with_arch |
| |
| # 5. Find tool without arch in $PATH. |
| if is_binutils and tool_info.get('accept_tool_without_arch'): |
| if is_executable_available(toolname, test_option): |
| return toolname |
| return None |
| |
| |
| class AdbHelper(object): |
| def __init__(self, enable_switch_to_root=True): |
| adb_path = find_tool_path('adb') |
| if not adb_path: |
| log_exit("Can't find adb in PATH environment.") |
| self.adb_path = adb_path |
| self.enable_switch_to_root = enable_switch_to_root |
| |
| |
| def run(self, adb_args): |
| return self.run_and_return_output(adb_args)[0] |
| |
| |
| def run_and_return_output(self, adb_args, stdout_file=None, log_output=True): |
| adb_args = [self.adb_path] + adb_args |
| log_debug('run adb cmd: %s' % adb_args) |
| if stdout_file: |
| with open(stdout_file, 'wb') as stdout_fh: |
| returncode = subprocess.call(adb_args, stdout=stdout_fh) |
| stdoutdata = '' |
| else: |
| subproc = subprocess.Popen(adb_args, stdout=subprocess.PIPE) |
| (stdoutdata, _) = subproc.communicate() |
| returncode = subproc.returncode |
| result = (returncode == 0) |
| if stdoutdata and adb_args[1] != 'push' and adb_args[1] != 'pull': |
| stdoutdata = bytes_to_str(stdoutdata) |
| if log_output: |
| log_debug(stdoutdata) |
| log_debug('run adb cmd: %s [result %s]' % (adb_args, result)) |
| return (result, stdoutdata) |
| |
| def check_run(self, adb_args): |
| self.check_run_and_return_output(adb_args) |
| |
| |
| def check_run_and_return_output(self, adb_args, stdout_file=None, log_output=True): |
| result, stdoutdata = self.run_and_return_output(adb_args, stdout_file, log_output) |
| if not result: |
| log_exit('run "adb %s" failed' % adb_args) |
| return stdoutdata |
| |
| |
| def _unroot(self): |
| result, stdoutdata = self.run_and_return_output(['shell', 'whoami']) |
| if not result: |
| return |
| if 'root' not in stdoutdata: |
| return |
| log_info('unroot adb') |
| self.run(['unroot']) |
| self.run(['wait-for-device']) |
| time.sleep(1) |
| |
| |
| def switch_to_root(self): |
| if not self.enable_switch_to_root: |
| self._unroot() |
| return False |
| result, stdoutdata = self.run_and_return_output(['shell', 'whoami']) |
| if not result: |
| return False |
| if 'root' in stdoutdata: |
| return True |
| build_type = self.get_property('ro.build.type') |
| if build_type == 'user': |
| return False |
| self.run(['root']) |
| time.sleep(1) |
| self.run(['wait-for-device']) |
| result, stdoutdata = self.run_and_return_output(['shell', 'whoami']) |
| return result and 'root' in stdoutdata |
| |
| def get_property(self, name): |
| result, stdoutdata = self.run_and_return_output(['shell', 'getprop', name]) |
| return stdoutdata if result else None |
| |
| def set_property(self, name, value): |
| return self.run(['shell', 'setprop', name, value]) |
| |
| |
| def get_device_arch(self): |
| output = self.check_run_and_return_output(['shell', 'uname', '-m']) |
| if 'aarch64' in output: |
| return 'arm64' |
| if 'arm' in output: |
| return 'arm' |
| if 'x86_64' in output: |
| return 'x86_64' |
| if '86' in output: |
| return 'x86' |
| log_fatal('unsupported architecture: %s' % output.strip()) |
| |
| |
| def get_android_version(self): |
| build_version = self.get_property('ro.build.version.release') |
| android_version = 0 |
| if build_version: |
| if not build_version[0].isdigit(): |
| c = build_version[0].upper() |
| if c.isupper() and c >= 'L': |
| android_version = ord(c) - ord('L') + 5 |
| else: |
| strs = build_version.split('.') |
| if strs: |
| android_version = int(strs[0]) |
| return android_version |
| |
| |
| def flatten_arg_list(arg_list): |
| res = [] |
| if arg_list: |
| for items in arg_list: |
| res += items |
| return res |
| |
| |
| def remove(dir_or_file): |
| if os.path.isfile(dir_or_file): |
| os.remove(dir_or_file) |
| elif os.path.isdir(dir_or_file): |
| shutil.rmtree(dir_or_file, ignore_errors=True) |
| |
| |
| def open_report_in_browser(report_path): |
| if is_darwin(): |
| # On darwin 10.12.6, webbrowser can't open browser, so try `open` cmd first. |
| try: |
| subprocess.check_call(['open', report_path]) |
| return |
| except: |
| pass |
| import webbrowser |
| try: |
| # Try to open the report with Chrome |
| browser_key = '' |
| for key, _ in webbrowser._browsers.items(): |
| if 'chrome' in key: |
| browser_key = key |
| browser = webbrowser.get(browser_key) |
| browser.open(report_path, new=0, autoraise=True) |
| except: |
| # webbrowser.get() doesn't work well on darwin/windows. |
| webbrowser.open_new_tab(report_path) |
| |
| |
| def find_real_dso_path(dso_path_in_record_file, binary_cache_path): |
| """ Given the path of a shared library in perf.data, find its real path in the file system. """ |
| if dso_path_in_record_file[0] != '/' or dso_path_in_record_file == '//anon': |
| return None |
| if binary_cache_path: |
| tmp_path = os.path.join(binary_cache_path, dso_path_in_record_file[1:]) |
| if os.path.isfile(tmp_path): |
| return tmp_path |
| if os.path.isfile(dso_path_in_record_file): |
| return dso_path_in_record_file |
| return None |
| |
| |
| class Addr2Nearestline(object): |
| """ Use addr2line to convert (dso_path, func_addr, addr) to (source_file, line) pairs. |
| For instructions generated by C++ compilers without a matching statement in source code |
| (like stack corruption check, switch optimization, etc.), addr2line can't generate |
| line information. However, we want to assign the instruction to the nearest line before |
| the instruction (just like objdump -dl). So we use below strategy: |
| Instead of finding the exact line of the instruction in an address, we find the nearest |
| line to the instruction in an address. If an address doesn't have a line info, we find |
| the line info of address - 1. If still no line info, then use address - 2, address - 3, |
| etc. |
| |
| The implementation steps are as below: |
| 1. Collect all (dso_path, func_addr, addr) requests before converting. This saves the |
| times to call addr2line. |
| 2. Convert addrs to (source_file, line) pairs for each dso_path as below: |
| 2.1 Check if the dso_path has .debug_line. If not, omit its conversion. |
| 2.2 Get arch of the dso_path, and decide the addr_step for it. addr_step is the step we |
| change addr each time. For example, since instructions of arm64 are all 4 bytes long, |
| addr_step for arm64 can be 4. |
| 2.3 Use addr2line to find line info for each addr in the dso_path. |
| 2.4 For each addr without line info, use addr2line to find line info for |
| range(addr - addr_step, addr - addr_step * 4 - 1, -addr_step). |
| 2.5 For each addr without line info, use addr2line to find line info for |
| range(addr - addr_step * 5, addr - addr_step * 128 - 1, -addr_step). |
| (128 is a guess number. A nested switch statement in |
| system/core/demangle/Demangler.cpp has >300 bytes without line info in arm64.) |
| """ |
| class Dso(object): |
| """ Info of a dynamic shared library. |
| addrs: a map from address to Addr object in this dso. |
| """ |
| def __init__(self): |
| self.addrs = {} |
| |
| class Addr(object): |
| """ Info of an addr request. |
| func_addr: start_addr of the function containing addr. |
| source_lines: a list of [file_id, line_number] for addr. |
| source_lines[:-1] are all for inlined functions. |
| """ |
| def __init__(self, func_addr): |
| self.func_addr = func_addr |
| self.source_lines = None |
| |
| def __init__(self, ndk_path, binary_cache_path): |
| self.addr2line_path = find_tool_path('addr2line', ndk_path) |
| if not self.addr2line_path: |
| log_exit("Can't find addr2line. Please set ndk path with --ndk-path option.") |
| self.readelf = ReadElf(ndk_path) |
| self.dso_map = {} # map from dso_path to Dso. |
| self.binary_cache_path = binary_cache_path |
| # Saving file names for each addr takes a lot of memory. So we store file ids in Addr, |
| # and provide data structures connecting file id and file name here. |
| self.file_name_to_id = {} |
| self.file_id_to_name = [] |
| |
| def add_addr(self, dso_path, func_addr, addr): |
| dso = self.dso_map.get(dso_path) |
| if dso is None: |
| dso = self.dso_map[dso_path] = self.Dso() |
| if addr not in dso.addrs: |
| dso.addrs[addr] = self.Addr(func_addr) |
| |
| def convert_addrs_to_lines(self): |
| for dso_path in self.dso_map: |
| self._convert_addrs_in_one_dso(dso_path, self.dso_map[dso_path]) |
| |
| def _convert_addrs_in_one_dso(self, dso_path, dso): |
| real_path = find_real_dso_path(dso_path, self.binary_cache_path) |
| if not real_path: |
| if dso_path not in ['//anon', 'unknown', '[kernel.kallsyms]']: |
| log_debug("Can't find dso %s" % dso_path) |
| return |
| |
| if not self._check_debug_line_section(real_path): |
| log_debug("file %s doesn't contain .debug_line section." % real_path) |
| return |
| |
| addr_step = self._get_addr_step(real_path) |
| self._collect_line_info(dso, real_path, [0]) |
| self._collect_line_info(dso, real_path, range(-addr_step, -addr_step * 4 - 1, -addr_step)) |
| self._collect_line_info(dso, real_path, |
| range(-addr_step * 5, -addr_step * 128 - 1, -addr_step)) |
| |
| def _check_debug_line_section(self, real_path): |
| return '.debug_line' in self.readelf.get_sections(real_path) |
| |
| def _get_addr_step(self, real_path): |
| arch = self.readelf.get_arch(real_path) |
| if arch == 'arm64': |
| return 4 |
| if arch == 'arm': |
| return 2 |
| return 1 |
| |
| def _collect_line_info(self, dso, real_path, addr_shifts): |
| """ Use addr2line to get line info in a dso, with given addr shifts. """ |
| # 1. Collect addrs to send to addr2line. |
| addr_set = set() |
| for addr in dso.addrs: |
| addr_obj = dso.addrs[addr] |
| if addr_obj.source_lines: # already has source line, no need to search. |
| continue |
| for shift in addr_shifts: |
| # The addr after shift shouldn't change to another function. |
| shifted_addr = max(addr + shift, addr_obj.func_addr) |
| addr_set.add(shifted_addr) |
| if shifted_addr == addr_obj.func_addr: |
| break |
| if not addr_set: |
| return |
| addr_request = '\n'.join(['%x' % addr for addr in sorted(addr_set)]) |
| |
| # 2. Use addr2line to collect line info. |
| try: |
| subproc = subprocess.Popen([self.addr2line_path, '-ai', '-e', real_path], |
| stdin=subprocess.PIPE, stdout=subprocess.PIPE) |
| (stdoutdata, _) = subproc.communicate(str_to_bytes(addr_request)) |
| stdoutdata = bytes_to_str(stdoutdata) |
| except: |
| return |
| addr_map = {} |
| cur_line_list = None |
| for line in stdoutdata.strip().split('\n'): |
| if line[:2] == '0x': |
| # a new address |
| cur_line_list = addr_map[int(line, 16)] = [] |
| else: |
| # a file:line. |
| if cur_line_list is None: |
| continue |
| # Handle lines like "C:\Users\...\file:32". |
| items = line.rsplit(':', 1) |
| if len(items) != 2: |
| continue |
| if '?' in line: |
| # if ? in line, it doesn't have a valid line info. |
| # An addr can have a list of (file, line), when the addr belongs to an inlined |
| # function. Sometimes only part of the list has ? mark. In this case, we think |
| # the line info is valid if the first line doesn't have ? mark. |
| if not cur_line_list: |
| cur_line_list = None |
| continue |
| (file_path, line_number) = items |
| line_number = line_number.split()[0] # Remove comments after line number |
| try: |
| line_number = int(line_number) |
| except ValueError: |
| continue |
| file_id = self._get_file_id(file_path) |
| cur_line_list.append((file_id, line_number)) |
| |
| # 3. Fill line info in dso.addrs. |
| for addr in dso.addrs: |
| addr_obj = dso.addrs[addr] |
| if addr_obj.source_lines: |
| continue |
| for shift in addr_shifts: |
| shifted_addr = max(addr + shift, addr_obj.func_addr) |
| lines = addr_map.get(shifted_addr) |
| if lines: |
| addr_obj.source_lines = lines |
| break |
| if shifted_addr == addr_obj.func_addr: |
| break |
| |
| def _get_file_id(self, file_path): |
| file_id = self.file_name_to_id.get(file_path) |
| if file_id is None: |
| file_id = self.file_name_to_id[file_path] = len(self.file_id_to_name) |
| self.file_id_to_name.append(file_path) |
| return file_id |
| |
| def get_dso(self, dso_path): |
| return self.dso_map.get(dso_path) |
| |
| def get_addr_source(self, dso, addr): |
| source = dso.addrs[addr].source_lines |
| if source is None: |
| return None |
| return [(self.file_id_to_name[file_id], line) for (file_id, line) in source] |
| |
| |
| class Objdump(object): |
| """ A wrapper of objdump to disassemble code. """ |
| def __init__(self, ndk_path, binary_cache_path): |
| self.ndk_path = ndk_path |
| self.binary_cache_path = binary_cache_path |
| self.readelf = ReadElf(ndk_path) |
| self.objdump_paths = {} |
| |
| def disassemble_code(self, dso_path, start_addr, addr_len): |
| """ Disassemble [start_addr, start_addr + addr_len] of dso_path. |
| Return a list of pair (disassemble_code_line, addr). |
| """ |
| # 1. Find real path. |
| real_path = find_real_dso_path(dso_path, self.binary_cache_path) |
| if real_path is None: |
| return None |
| |
| # 2. Get path of objdump. |
| arch = self.readelf.get_arch(real_path) |
| if arch == 'unknown': |
| return None |
| objdump_path = self.objdump_paths.get(arch) |
| if not objdump_path: |
| objdump_path = find_tool_path('objdump', self.ndk_path, arch) |
| if not objdump_path: |
| log_exit("Can't find objdump. Please set ndk path with --ndk_path option.") |
| self.objdump_paths[arch] = objdump_path |
| |
| # 3. Run objdump. |
| args = [objdump_path, '-dlC', '--no-show-raw-insn', |
| '--start-address=0x%x' % start_addr, |
| '--stop-address=0x%x' % (start_addr + addr_len), |
| real_path] |
| try: |
| subproc = subprocess.Popen(args, stdin=subprocess.PIPE, stdout=subprocess.PIPE) |
| (stdoutdata, _) = subproc.communicate() |
| stdoutdata = bytes_to_str(stdoutdata) |
| except: |
| return None |
| |
| if not stdoutdata: |
| return None |
| result = [] |
| for line in stdoutdata.split('\n'): |
| line = line.rstrip() # Remove '\r' on Windows. |
| items = line.split(':', 1) |
| try: |
| addr = int(items[0], 16) |
| except ValueError: |
| addr = 0 |
| result.append((line, addr)) |
| return result |
| |
| |
| class ReadElf(object): |
| """ A wrapper of readelf. """ |
| def __init__(self, ndk_path): |
| self.readelf_path = find_tool_path('readelf', ndk_path) |
| if not self.readelf_path: |
| log_exit("Can't find readelf. Please set ndk path with --ndk_path option.") |
| |
| def get_arch(self, elf_file_path): |
| """ Get arch of an elf file. """ |
| try: |
| output = subprocess.check_output([self.readelf_path, '-h', elf_file_path]) |
| if output.find('AArch64') != -1: |
| return 'arm64' |
| if output.find('ARM') != -1: |
| return 'arm' |
| if output.find('X86-64') != -1: |
| return 'x86_64' |
| if output.find('80386') != -1: |
| return 'x86' |
| except subprocess.CalledProcessError: |
| pass |
| return 'unknown' |
| |
| def get_build_id(self, elf_file_path): |
| """ Get build id of an elf file. """ |
| try: |
| output = subprocess.check_output([self.readelf_path, '-n', elf_file_path]) |
| output = bytes_to_str(output) |
| result = re.search(r'Build ID:\s*(\S+)', output) |
| if result: |
| build_id = result.group(1) |
| if len(build_id) < 40: |
| build_id += '0' * (40 - len(build_id)) |
| else: |
| build_id = build_id[:40] |
| build_id = '0x' + build_id |
| return build_id |
| except subprocess.CalledProcessError: |
| pass |
| return "" |
| |
| def get_sections(self, elf_file_path): |
| """ Get sections of an elf file. """ |
| section_names = [] |
| try: |
| output = subprocess.check_output([self.readelf_path, '-SW', elf_file_path]) |
| output = bytes_to_str(output) |
| for line in output.split('\n'): |
| # Parse line like:" [ 1] .note.android.ident NOTE 0000000000400190 ...". |
| result = re.search(r'^\s+\[\s*\d+\]\s(.+?)\s', line) |
| if result: |
| section_name = result.group(1).strip() |
| if section_name: |
| section_names.append(section_name) |
| except subprocess.CalledProcessError: |
| pass |
| return section_names |
| |
| def extant_dir(arg): |
| """ArgumentParser type that only accepts extant directories. |
| |
| Args: |
| arg: The string argument given on the command line. |
| Returns: The argument as a realpath. |
| Raises: |
| argparse.ArgumentTypeError: The given path isn't a directory. |
| """ |
| path = os.path.realpath(arg) |
| if not os.path.isdir(path): |
| import argparse |
| raise argparse.ArgumentTypeError('{} is not a directory.'.format(path)) |
| return path |
| |
| logging.getLogger().setLevel(logging.DEBUG) |
