| |
| """ |
| Utilities for working with external processes. |
| """ |
|
|
| |
| |
|
|
|
|
| import os |
| import shutil |
| import sys |
|
|
| if sys.platform == 'win32': |
| from ._process_win32 import system, getoutput, arg_split, check_pid |
| elif sys.platform == 'cli': |
| from ._process_cli import system, getoutput, arg_split, check_pid |
| elif sys.platform == "emscripten": |
| from ._process_emscripten import system, getoutput, arg_split, check_pid |
| else: |
| from ._process_posix import system, getoutput, arg_split, check_pid |
|
|
| from ._process_common import getoutputerror, get_output_error_code, process_handler |
|
|
|
|
| class FindCmdError(Exception): |
| pass |
|
|
|
|
| def find_cmd(cmd): |
| """Find absolute path to executable cmd in a cross platform manner. |
| |
| This function tries to determine the full path to a command line program |
| using `which` on Unix/Linux/OS X and `win32api` on Windows. Most of the |
| time it will use the version that is first on the users `PATH`. |
| |
| Warning, don't use this to find IPython command line programs as there |
| is a risk you will find the wrong one. Instead find those using the |
| following code and looking for the application itself:: |
| |
| import sys |
| argv = [sys.executable, '-m', 'IPython'] |
| |
| Parameters |
| ---------- |
| cmd : str |
| The command line program to look for. |
| """ |
| path = shutil.which(cmd) |
| if path is None: |
| raise FindCmdError('command could not be found: %s' % cmd) |
| return path |
|
|
|
|
| def abbrev_cwd(): |
| """ Return abbreviated version of cwd, e.g. d:mydir """ |
| cwd = os.getcwd().replace('\\','/') |
| drivepart = '' |
| tail = cwd |
| if sys.platform == 'win32': |
| if len(cwd) < 4: |
| return cwd |
| drivepart,tail = os.path.splitdrive(cwd) |
|
|
|
|
| parts = tail.split('/') |
| if len(parts) > 2: |
| tail = '/'.join(parts[-2:]) |
|
|
| return (drivepart + ( |
| cwd == '/' and '/' or tail)) |
|
|
