mirror of
https://github.com/xonsh/xonsh.git
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66 lines
1.8 KiB
Python
66 lines
1.8 KiB
Python
"""Bash-like interface extensions for xonsh."""
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import shlex
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import sys
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import re
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import builtins
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__all__ = ()
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@events.on_transform_command
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def bash_preproc(cmd, **kw):
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bang_previous = {
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"!": lambda x: x,
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"$": lambda x: shlex.split(x)[-1],
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"^": lambda x: shlex.split(x)[0],
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"*": lambda x: " ".join(shlex.split(x)[1:]),
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}
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def replace_bang(m):
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arg = m.group(1)
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inputs = __xonsh__.history.inps
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# Dissect the previous command.
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if arg in bang_previous:
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try:
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return bang_previous[arg](inputs[-1])
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except IndexError:
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print("xonsh: no history for '!{}'".format(arg))
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return ""
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# Look back in history for a matching command.
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else:
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try:
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return next((x for x in reversed(inputs) if x.startswith(arg)))
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except StopIteration:
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print("xonsh: no previous commands match '!{}'".format(arg))
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return ""
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return re.sub(r"!([!$^*]|[\w]+)", replace_bang, cmd)
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def alias(args, stdin=None):
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ret = 0
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if args:
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for arg in args:
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if "=" in arg:
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# shlex.split to remove quotes, e.g. "foo='echo hey'" into
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# "foo=echo hey"
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name, cmd = shlex.split(arg)[0].split("=", 1)
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aliases[name] = shlex.split(cmd)
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elif arg in aliases:
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print("{}={}".format(arg, aliases[arg]))
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else:
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print("alias: {}: not found".format(arg), file=sys.stderr)
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ret = 1
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else:
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for alias, cmd in aliases.items():
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print("{}={}".format(alias, cmd))
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return ret
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aliases["alias"] = alias
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builtins.__xonsh__.env["THREAD_SUBPROCS"] = False
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