50 lines
1.5 KiB
Python
50 lines
1.5 KiB
Python
"""Utility for changing directories and execution of commands in a subshell."""
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import os, shlex, subprocess
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# Store the previous working directory for the 'cd -' command.
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class Holder:
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"""Holds the _prev_dir_ class attribute for chdir() function."""
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_prev_dir_ = None
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@classmethod
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def prev_dir(cls):
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return cls._prev_dir_
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@classmethod
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def swap(cls, dir):
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cls._prev_dir_ = dir
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def chdir(debugger, args, result, dict):
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"""Change the working directory, or cd to ${HOME}.
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You can also issue 'cd -' to change to the previous working directory."""
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new_dir = args.strip()
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if not new_dir:
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new_dir = os.path.expanduser('~')
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elif new_dir == '-':
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if not Holder.prev_dir():
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# Bad directory, not changing.
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print "bad directory, not changing"
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return
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else:
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new_dir = Holder.prev_dir()
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Holder.swap(os.getcwd())
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os.chdir(new_dir)
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print "Current working directory: %s" % os.getcwd()
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def system(debugger, command_line, result, dict):
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"""Execute the command (a string) in a subshell."""
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args = shlex.split(command_line)
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process = subprocess.Popen(args, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
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output, error = process.communicate()
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retcode = process.poll()
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if output and error:
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print "stdout=>\n", output
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print "stderr=>\n", error
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elif output:
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print output
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elif error:
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print error
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print "retcode:", retcode
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