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|
# -*- coding: iso-8859-1 -*-
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|
"""
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|
|
``ipipe`` provides classes to be used in an interactive Python session. Doing a
|
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|
``from ipipe import *`` is the preferred way to do this. The name of all
|
|
|
objects imported this way starts with ``i`` to minimize collisions.
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|
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|
``ipipe`` supports "pipeline expressions", which is something resembling Unix
|
|
|
pipes. An example is:
|
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|
|
|
|
>>> ienv | isort("key.lower()")
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|
|
|
|
This gives a listing of all environment variables sorted by name.
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|
There are three types of objects in a pipeline expression:
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* ``Table``s: These objects produce items. Examples are ``ls`` (listing the
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|
current directory, ``ienv`` (listing environment variables), ``ipwd`` (listing
|
|
|
user account) and ``igrp`` (listing user groups). A ``Table`` must be the
|
|
|
first object in a pipe expression.
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|
* ``Pipe``s: These objects sit in the middle of a pipe expression. They
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|
transform the input in some way (e.g. filtering or sorting it). Examples are:
|
|
|
``ifilter`` (which filters the input pipe), ``isort`` (which sorts the input
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|
pipe) and ``ieval`` (which evaluates a function or expression for each object
|
|
|
in the input pipe).
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* ``Display``s: These objects can be put as the last object in a pipeline
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|
expression. There are responsible for displaying the result of the pipeline
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|
expression. If a pipeline expression doesn't end in a display object a default
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display objects will be used. One example is ``browse`` which is a ``curses``
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based browser.
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Adding support for pipeline expressions to your own objects can be done through
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three extensions points (all of them optional):
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* An object that will be displayed as a row by a ``Display`` object should
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implement the method ``__xattrs__(self, mode)``. This method must return a
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|
sequence of attribute names. This sequence may also contain integers, which
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|
will be treated as sequence indizes. Also supported is ``None``, which uses
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|
the object itself and callables which will be called with the object as the
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an argument. If ``__xattrs__()`` isn't implemented ``(None,)`` will be used as
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the attribute sequence (i.e. the object itself (it's ``repr()`` format) will
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|
be being displayed. The global function ``xattrs()`` implements this
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functionality.
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* When an object ``foo`` is displayed in the header, footer or table cell of the
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browser ``foo.__xrepr__(mode)`` is called. Mode can be ``"header"`` or
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``"footer"`` for the header or footer line and ``"cell"`` for a table cell.
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``__xrepr__()```must return an iterable (e.g. by being a generator) which
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|
produces the following items: The first item should be a tuple containing
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|
the alignment (-1 left aligned, 0 centered and 1 right aligned) and whether
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the complete output must be displayed or if the browser is allowed to stop
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|
output after enough text has been produced (e.g. a syntax highlighted text
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line would use ``True``, but for a large data structure (i.e. a nested list,
|
|
|
tuple or dictionary) ``False`` would be used). The other output ``__xrepr__()``
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|
|
may produce is tuples of ``Style```objects and text (which contain the text
|
|
|
representation of the object; see the ``astyle`` module). If ``__xrepr__()``
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|
|
recursively outputs a data structure the function ``xrepr(object, mode)`` can
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be used and ``"default"`` must be passed as the mode in these calls. This in
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turn calls the ``__xrepr__()`` method on ``object`` (or uses ``repr(object)``
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|
|
as the string representation if ``__xrepr__()`` doesn't exist).
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* Objects that can be iterated by ``Pipe``s must implement the method
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``__xiter__(self, mode)``. ``mode`` can take the following values:
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- ``"default"``: This is the default value and ist always used by pipeline
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|
expressions. Other values are only used in the browser.
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- ``None``: This value is passed by the browser. The object must return an
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|
iterable of ``XMode`` objects describing all modes supported by the object.
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(This should never include ``"default"`` or ``None``).
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- Any other value that the object supports.
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The global function ``xiter()`` can be called to get such an iterator. If
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the method ``_xiter__`` isn't implemented, ``xiter()`` falls back to
|
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``__iter__``. In addition to that, dictionaries and modules receive special
|
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|
treatment (returning an iterator over ``(key, value)`` pairs). This makes it
|
|
|
possible to use dictionaries and modules in pipeline expressions, for example:
|
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|
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>>> import sys
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>>> sys | ifilter("isinstance(value, int)") | idump
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key |value
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api_version| 1012
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dllhandle | 503316480
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hexversion | 33817328
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maxint |2147483647
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maxunicode | 65535
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>>> sys.modules | ifilter("_.value is not None") | isort("_.key.lower()")
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...
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|
|
|
Note: The expression strings passed to ``ifilter()`` and ``isort()`` can
|
|
|
refer to the object to be filtered or sorted via the variable ``_`` and to any
|
|
|
of the attributes of the object, i.e.:
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|
|
|
>>> sys.modules | ifilter("_.value is not None") | isort("_.key.lower()")
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|
|
|
does the same as
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|
|
>>> sys.modules | ifilter("value is not None") | isort("key.lower()")
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|
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In addition to expression strings, it's possible to pass callables (taking
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|
|
the object as an argument) to ``ifilter()``, ``isort()`` and ``ieval()``:
|
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|
|
|
>>> sys | ifilter(lambda _:isinstance(_.value, int)) \
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|
... | ieval(lambda _: (_.key, hex(_.value))) | idump
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|
0 |1
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|
api_version|0x3f4
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|
dllhandle |0x1e000000
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|
hexversion |0x20402f0
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maxint |0x7fffffff
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maxunicode |0xffff
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"""
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import sys, os, os.path, stat, glob, new, csv, datetime, types
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import itertools, mimetypes
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try: # Python 2.3 compatibility
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import collections
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|
except ImportError:
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|
deque = list
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|
else:
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|
deque = collections.deque
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try: # Python 2.3 compatibility
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set
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|
except NameError:
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|
import sets
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set = sets.Set
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try: # Python 2.3 compatibility
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sorted
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except NameError:
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def sorted(iterator, key=None, reverse=False):
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|
items = list(iterator)
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|
|
if key is not None:
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|
items.sort(lambda i1, i2: cmp(key(i1), key(i2)))
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|
else:
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|
items.sort()
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|
if reverse:
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|
items.reverse()
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return items
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try:
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import pwd
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except ImportError:
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pwd = None
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try:
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import grp
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except ImportError:
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|
grp = None
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|
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|
import path
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try:
|
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|
from IPython import genutils, ipapi
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|
except ImportError:
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|
genutils = None
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|
ipapi = None
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|
|
import astyle
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__all__ = [
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"ifile", "ils", "iglob", "iwalk", "ipwdentry", "ipwd", "igrpentry", "igrp",
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|
"icsv", "ix", "ichain", "isort", "ifilter", "ieval", "ienum", "ienv",
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|
|
"idump", "iless"
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]
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os.stat_float_times(True) # enable microseconds
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|
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class AttrNamespace(object):
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|
"""
|
|
|
Helper class that is used for providing a namespace for evaluating
|
|
|
expressions containing attribute names of an object.
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|
"""
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|
def __init__(self, wrapped):
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|
self.wrapped = wrapped
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def __getitem__(self, name):
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|
if name == "_":
|
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|
return self.wrapped
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try:
|
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|
return getattr(self.wrapped, name)
|
|
|
except AttributeError:
|
|
|
raise KeyError(name)
|
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|
|
|
|
# Python 2.3 compatibility
|
|
|
# use eval workaround to find out which names are used in the
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|
|
# eval string and put them into the locals. This works for most
|
|
|
# normal uses case, bizarre ones like accessing the locals()
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|
# will fail
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try:
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|
eval("_", None, AttrNamespace(None))
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|
except TypeError:
|
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|
real_eval = eval
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|
def eval(codestring, _globals, _locals):
|
|
|
"""
|
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|
eval(source[, globals[, locals]]) -> value
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|
Evaluate the source in the context of globals and locals.
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|
|
The source may be a string representing a Python expression
|
|
|
or a code object as returned by compile().
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|
The globals must be a dictionary and locals can be any mappping.
|
|
|
|
|
|
This function is a workaround for the shortcomings of
|
|
|
Python 2.3's eval.
|
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|
"""
|
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|
|
code = compile(codestring, "_eval", "eval")
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|
|
newlocals = {}
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|
for name in code.co_names:
|
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|
try:
|
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|
newlocals[name] = _locals[name]
|
|
|
except KeyError:
|
|
|
pass
|
|
|
return real_eval(code, _globals, newlocals)
|
|
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|
|
|
|
|
|
noitem = object()
|
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|
|
|
def item(iterator, index, default=noitem):
|
|
|
"""
|
|
|
Return the ``index``th item from the iterator ``iterator``.
|
|
|
``index`` must be an integer (negative integers are relative to the
|
|
|
end (i.e. the last item produced by the iterator)).
|
|
|
|
|
|
If ``default`` is given, this will be the default value when
|
|
|
the iterator doesn't contain an item at this position. Otherwise an
|
|
|
``IndexError`` will be raised.
|
|
|
|
|
|
Note that using this function will partially or totally exhaust the
|
|
|
iterator.
|
|
|
"""
|
|
|
i = index
|
|
|
if i>=0:
|
|
|
for item in iterator:
|
|
|
if not i:
|
|
|
return item
|
|
|
i -= 1
|
|
|
else:
|
|
|
i = -index
|
|
|
cache = deque()
|
|
|
for item in iterator:
|
|
|
cache.append(item)
|
|
|
if len(cache)>i:
|
|
|
cache.popleft()
|
|
|
if len(cache)==i:
|
|
|
return cache.popleft()
|
|
|
if default is noitem:
|
|
|
raise IndexError(index)
|
|
|
else:
|
|
|
return default
|
|
|
|
|
|
|
|
|
def getglobals(g):
|
|
|
if g is None:
|
|
|
if ipapi is not None:
|
|
|
return ipapi.get().user_ns()
|
|
|
else:
|
|
|
return globals()
|
|
|
return g
|
|
|
|
|
|
|
|
|
class Table(object):
|
|
|
"""
|
|
|
A ``Table`` is an object that produces items (just like a normal Python
|
|
|
iterator/generator does) and can be used as the first object in a pipeline
|
|
|
expression. The displayhook will open the default browser for such an object
|
|
|
(instead of simply printing the ``repr()`` result).
|
|
|
"""
|
|
|
|
|
|
# We want to support ``foo`` and ``foo()`` in pipeline expression:
|
|
|
# So we implement the required operators (``|`` and ``+``) in the metaclass,
|
|
|
# instantiate the class and forward the operator to the instance
|
|
|
class __metaclass__(type):
|
|
|
def __iter__(self):
|
|
|
return iter(self())
|
|
|
|
|
|
def __or__(self, other):
|
|
|
return self() | other
|
|
|
|
|
|
def __add__(self, other):
|
|
|
return self() + other
|
|
|
|
|
|
def __radd__(self, other):
|
|
|
return other + self()
|
|
|
|
|
|
def __getitem__(self, index):
|
|
|
return self()[index]
|
|
|
|
|
|
def __getitem__(self, index):
|
|
|
return item(self, index)
|
|
|
|
|
|
def __contains__(self, item):
|
|
|
for haveitem in self:
|
|
|
if item == haveitem:
|
|
|
return True
|
|
|
return False
|
|
|
|
|
|
def __or__(self, other):
|
|
|
# autoinstantiate right hand side
|
|
|
if isinstance(other, type) and issubclass(other, (Table, Display)):
|
|
|
other = other()
|
|
|
# treat simple strings and functions as ``ieval`` instances
|
|
|
elif not isinstance(other, Display) and not isinstance(other, Table):
|
|
|
other = ieval(other)
|
|
|
# forward operations to the right hand side
|
|
|
return other.__ror__(self)
|
|
|
|
|
|
def __add__(self, other):
|
|
|
# autoinstantiate right hand side
|
|
|
if isinstance(other, type) and issubclass(other, Table):
|
|
|
other = other()
|
|
|
return ichain(self, other)
|
|
|
|
|
|
def __radd__(self, other):
|
|
|
# autoinstantiate left hand side
|
|
|
if isinstance(other, type) and issubclass(other, Table):
|
|
|
other = other()
|
|
|
return ichain(other, self)
|
|
|
|
|
|
def __iter__(self):
|
|
|
return xiter(self, "default")
|
|
|
|
|
|
|
|
|
class Pipe(Table):
|
|
|
"""
|
|
|
A ``Pipe`` is an object that can be used in a pipeline expression. It
|
|
|
processes the objects it gets from its input ``Table``/``Pipe``. Note that
|
|
|
a ``Pipe`` object can't be used as the first object in a pipeline
|
|
|
expression, as it doesn't produces items itself.
|
|
|
"""
|
|
|
class __metaclass__(Table.__metaclass__):
|
|
|
def __ror__(self, input):
|
|
|
return input | self()
|
|
|
|
|
|
def __ror__(self, input):
|
|
|
# autoinstantiate left hand side
|
|
|
if isinstance(input, type) and issubclass(input, Table):
|
|
|
input = input()
|
|
|
self.input = input
|
|
|
return self
|
|
|
|
|
|
|
|
|
def _getattr(obj, name, default=noitem):
|
|
|
"""
|
|
|
Internal helper for getting an attribute of an item. If ``name`` is ``None``
|
|
|
return the object itself. If ``name`` is an integer, use ``__getitem__``
|
|
|
instead. If the attribute or item does not exist, return ``default``.
|
|
|
"""
|
|
|
if name is None:
|
|
|
return obj
|
|
|
elif isinstance(name, basestring):
|
|
|
if name.endswith("()"):
|
|
|
return getattr(obj, name[:-2], default)()
|
|
|
else:
|
|
|
return getattr(obj, name, default)
|
|
|
elif callable(name):
|
|
|
try:
|
|
|
return name(obj)
|
|
|
except AttributeError:
|
|
|
return default
|
|
|
else:
|
|
|
try:
|
|
|
return obj[name]
|
|
|
except IndexError:
|
|
|
return default
|
|
|
|
|
|
|
|
|
def _attrname(name):
|
|
|
"""
|
|
|
Internal helper that gives a proper name for the attribute ``name``
|
|
|
(which might be ``None`` or an ``int``).
|
|
|
"""
|
|
|
if name is None:
|
|
|
return "_"
|
|
|
elif isinstance(name, basestring):
|
|
|
return name
|
|
|
elif callable(name):
|
|
|
return getattr(name, "__xname__", name.__name__)
|
|
|
else:
|
|
|
return str(name)
|
|
|
|
|
|
|
|
|
def xrepr(item, mode):
|
|
|
try:
|
|
|
func = item.__xrepr__
|
|
|
except AttributeError:
|
|
|
pass
|
|
|
else:
|
|
|
try:
|
|
|
for x in func(mode):
|
|
|
yield x
|
|
|
except (KeyboardInterrupt, SystemExit):
|
|
|
raise
|
|
|
except Exception:
|
|
|
yield (-1, True)
|
|
|
yield (astyle.style_default, repr(item))
|
|
|
return
|
|
|
if item is None:
|
|
|
yield (-1, True)
|
|
|
yield (astyle.style_type_none, repr(item))
|
|
|
elif isinstance(item, bool):
|
|
|
yield (-1, True)
|
|
|
yield (astyle.style_type_bool, repr(item))
|
|
|
elif isinstance(item, str):
|
|
|
yield (-1, True)
|
|
|
if mode == "cell":
|
|
|
yield (astyle.style_default, repr(item.expandtabs(tab))[1:-1])
|
|
|
else:
|
|
|
yield (astyle.style_default, repr(item))
|
|
|
elif isinstance(item, unicode):
|
|
|
yield (-1, True)
|
|
|
if mode == "cell":
|
|
|
yield (astyle.style_default, repr(item.expandtabs(tab))[2:-1])
|
|
|
else:
|
|
|
yield (astyle.style_default, repr(item))
|
|
|
elif isinstance(item, (int, long, float)):
|
|
|
yield (1, True)
|
|
|
yield (astyle.style_type_number, repr(item))
|
|
|
elif isinstance(item, complex):
|
|
|
yield (-1, True)
|
|
|
yield (astyle.style_type_number, repr(item))
|
|
|
elif isinstance(item, datetime.datetime):
|
|
|
yield (-1, True)
|
|
|
if mode == "cell":
|
|
|
# Don't use strftime() here, as this requires year >= 1900
|
|
|
yield (astyle.style_type_datetime,
|
|
|
"%04d-%02d-%02d %02d:%02d:%02d.%06d" % \
|
|
|
(item.year, item.month, item.day,
|
|
|
item.hour, item.minute, item.second,
|
|
|
item.microsecond),
|
|
|
)
|
|
|
else:
|
|
|
yield (astyle.style_type_datetime, repr(item))
|
|
|
elif isinstance(item, datetime.date):
|
|
|
yield (-1, True)
|
|
|
if mode == "cell":
|
|
|
yield (astyle.style_type_datetime,
|
|
|
"%04d-%02d-%02d" % (item.year, item.month, item.day))
|
|
|
else:
|
|
|
yield (astyle.style_type_datetime, repr(item))
|
|
|
elif isinstance(item, datetime.time):
|
|
|
yield (-1, True)
|
|
|
if mode == "cell":
|
|
|
yield (astyle.style_type_datetime,
|
|
|
"%02d:%02d:%02d.%06d" % \
|
|
|
(item.hour, item.minute, item.second, item.microsecond))
|
|
|
else:
|
|
|
yield (astyle.style_type_datetime, repr(item))
|
|
|
elif isinstance(item, datetime.timedelta):
|
|
|
yield (-1, True)
|
|
|
yield (astyle.style_type_datetime, repr(item))
|
|
|
elif isinstance(item, Exception):
|
|
|
yield (-1, True)
|
|
|
if item.__class__.__module__ == "exceptions":
|
|
|
classname = item.__class__.__name__
|
|
|
else:
|
|
|
classname = "%s.%s" % \
|
|
|
(item.__class__.__module__, item.__class__.__name__)
|
|
|
if mode == "header" or mode == "footer":
|
|
|
yield (astyle.style_error, "%s: %s" % (classname, item))
|
|
|
else:
|
|
|
yield (astyle.style_error, classname)
|
|
|
elif isinstance(item, (list, tuple)):
|
|
|
yield (-1, False)
|
|
|
if mode == "header" or mode == "footer":
|
|
|
if item.__class__.__module__ == "__builtin__":
|
|
|
classname = item.__class__.__name__
|
|
|
else:
|
|
|
classname = "%s.%s" % \
|
|
|
(item.__class__.__module__,item.__class__.__name__)
|
|
|
yield (astyle.style_default,
|
|
|
"<%s object with %d items at 0x%x>" % \
|
|
|
(classname, len(item), id(item)))
|
|
|
else:
|
|
|
if isinstance(item, list):
|
|
|
yield (astyle.style_default, "[")
|
|
|
end = "]"
|
|
|
else:
|
|
|
yield (astyle.style_default, "(")
|
|
|
end = ")"
|
|
|
for (i, subitem) in enumerate(item):
|
|
|
if i:
|
|
|
yield (astyle.style_default, ", ")
|
|
|
for part in xrepr(subitem, "default"):
|
|
|
yield part
|
|
|
yield (astyle.style_default, end)
|
|
|
elif isinstance(item, (dict, types.DictProxyType)):
|
|
|
yield (-1, False)
|
|
|
if mode == "header" or mode == "footer":
|
|
|
if item.__class__.__module__ == "__builtin__":
|
|
|
classname = item.__class__.__name__
|
|
|
else:
|
|
|
classname = "%s.%s" % \
|
|
|
(item.__class__.__module__,item.__class__.__name__)
|
|
|
yield (astyle.style_default,
|
|
|
"<%s object with %d items at 0x%x>" % \
|
|
|
(classname, len(item), id(item)))
|
|
|
else:
|
|
|
if isinstance(item, dict):
|
|
|
yield (astyle.style_default, "{")
|
|
|
end = "}"
|
|
|
else:
|
|
|
yield (astyle.style_default, "dictproxy((")
|
|
|
end = "})"
|
|
|
for (i, (key, value)) in enumerate(item.iteritems()):
|
|
|
if i:
|
|
|
yield (astyle.style_default, ", ")
|
|
|
for part in xrepr(key, "default"):
|
|
|
yield part
|
|
|
yield (astyle.style_default, ": ")
|
|
|
for part in xrepr(value, "default"):
|
|
|
yield part
|
|
|
yield (astyle.style_default, end)
|
|
|
else:
|
|
|
yield (-1, True)
|
|
|
yield (astyle.style_default, repr(item))
|
|
|
|
|
|
|
|
|
def xattrs(item, mode):
|
|
|
try:
|
|
|
func = item.__xattrs__
|
|
|
except AttributeError:
|
|
|
if mode == "detail":
|
|
|
return dir(item)
|
|
|
else:
|
|
|
return (None,)
|
|
|
else:
|
|
|
try:
|
|
|
return func(mode)
|
|
|
except (KeyboardInterrupt, SystemExit):
|
|
|
raise
|
|
|
except Exception:
|
|
|
return (None,)
|
|
|
|
|
|
|
|
|
def xiter(item, mode):
|
|
|
if mode == "detail":
|
|
|
def items():
|
|
|
for name in xattrs(item, mode):
|
|
|
yield XAttr(item, name)
|
|
|
return items()
|
|
|
try:
|
|
|
func = item.__xiter__
|
|
|
except AttributeError:
|
|
|
if isinstance(item, (dict, types.DictProxyType)):
|
|
|
def items(item):
|
|
|
fields = ("key", "value")
|
|
|
for (key, value) in item.iteritems():
|
|
|
yield Fields(fields, key=key, value=value)
|
|
|
return items(item)
|
|
|
elif isinstance(item, new.module):
|
|
|
def items(item):
|
|
|
fields = ("key", "value")
|
|
|
for key in sorted(item.__dict__):
|
|
|
yield Fields(fields, key=key, value=getattr(item, key))
|
|
|
return items(item)
|
|
|
elif isinstance(item, basestring):
|
|
|
if not len(item):
|
|
|
raise ValueError("can't enter empty string")
|
|
|
lines = item.splitlines()
|
|
|
if len(lines) <= 1:
|
|
|
raise ValueError("can't enter one line string")
|
|
|
return iter(lines)
|
|
|
return iter(item)
|
|
|
else:
|
|
|
return iter(func(mode)) # iter() just to be safe
|
|
|
|
|
|
|
|
|
class ichain(Pipe):
|
|
|
"""
|
|
|
Chains multiple ``Table``s into one.
|
|
|
"""
|
|
|
|
|
|
def __init__(self, *iters):
|
|
|
self.iters = iters
|
|
|
|
|
|
def __xiter__(self, mode):
|
|
|
return itertools.chain(*self.iters)
|
|
|
|
|
|
def __xrepr__(self, mode):
|
|
|
yield (-1, True)
|
|
|
if mode == "header" or mode == "footer":
|
|
|
for (i, item) in enumerate(self.iters):
|
|
|
if i:
|
|
|
yield (astyle.style_default, "+")
|
|
|
if isinstance(item, Pipe):
|
|
|
yield (astyle.style_default, "(")
|
|
|
for part in xrepr(item, mode):
|
|
|
yield part
|
|
|
if isinstance(item, Pipe):
|
|
|
yield (astyle.style_default, ")")
|
|
|
else:
|
|
|
yield (astyle.style_default, repr(self))
|
|
|
|
|
|
def __repr__(self):
|
|
|
args = ", ".join([repr(it) for it in self.iters])
|
|
|
return "%s.%s(%s)" % \
|
|
|
(self.__class__.__module__, self.__class__.__name__, args)
|
|
|
|
|
|
|
|
|
class ifile(path.path):
|
|
|
"""
|
|
|
file (or directory) object.
|
|
|
"""
|
|
|
|
|
|
def __add_(self, other):
|
|
|
return ifile(path._base(self) + other)
|
|
|
|
|
|
def __radd_(self, other):
|
|
|
return ifile(other + path._base(self))
|
|
|
|
|
|
def __div_(self, other):
|
|
|
return ifile(path.__div__(self, other))
|
|
|
|
|
|
def getcwd():
|
|
|
return ifile(path.path.getcwd())
|
|
|
getcwd.__doc__ = path.path.getcwd.__doc__
|
|
|
getcwd = staticmethod(getcwd)
|
|
|
|
|
|
def abspath(self):
|
|
|
return ifile(path.path.abspath(self))
|
|
|
abspath.__doc__ = path.path.abspath.__doc__
|
|
|
|
|
|
def normcase(self):
|
|
|
return ifile(path.path.normcase(self))
|
|
|
normcase.__doc__ = path.path.normcase.__doc__
|
|
|
|
|
|
def normpath(self):
|
|
|
return ifile(path.path.normpath(self))
|
|
|
normpath.__doc__ = path.path.normpath.__doc__
|
|
|
|
|
|
def realpath(self):
|
|
|
return ifile(path.path.realpath(self))
|
|
|
realpath.__doc__ = path.path.realpath.__doc__
|
|
|
|
|
|
def expanduser(self):
|
|
|
return ifile(path.path.expanduser(self))
|
|
|
expanduser.__doc__ = path.path.expanduser.__doc__
|
|
|
|
|
|
def expandvars(self):
|
|
|
return ifile(path.path.expandvars(self))
|
|
|
expandvars.__doc__ = path.path.expandvars.__doc__
|
|
|
|
|
|
def dirname(self):
|
|
|
return ifile(path.path.dirname(self))
|
|
|
dirname.__doc__ = path.path.dirname.__doc__
|
|
|
|
|
|
parent = property(dirname, None, None, path.path.parent.__doc__)
|
|
|
|
|
|
def splitpath(self):
|
|
|
(parent, child) = path.path.splitpath(self)
|
|
|
return (ifile(parent), child)
|
|
|
splitpath.__doc__ = path.path.splitpath.__doc__
|
|
|
|
|
|
def splitdrive(self):
|
|
|
(drive, rel) = path.path.splitdrive(self)
|
|
|
return (ifile(drive), rel)
|
|
|
splitdrive.__doc__ = path.path.splitdrive.__doc__
|
|
|
|
|
|
def splitext(self):
|
|
|
(filename, ext) = path.path.splitext(self)
|
|
|
return (ifile(filename), ext)
|
|
|
splitext.__doc__ = path.path.splitext.__doc__
|
|
|
|
|
|
if hasattr(path.path, "splitunc"):
|
|
|
def splitunc(self):
|
|
|
(unc, rest) = path.path.splitunc(self)
|
|
|
return (ifile(unc), rest)
|
|
|
splitunc.__doc__ = path.path.splitunc.__doc__
|
|
|
|
|
|
def _get_uncshare(self):
|
|
|
unc, r = os.path.splitunc(self)
|
|
|
return ifile(unc)
|
|
|
|
|
|
uncshare = property(
|
|
|
_get_uncshare, None, None,
|
|
|
""" The UNC mount point for this path.
|
|
|
This is empty for paths on local drives. """)
|
|
|
|
|
|
def joinpath(self, *args):
|
|
|
return ifile(path.path.joinpath(self, *args))
|
|
|
joinpath.__doc__ = path.path.joinpath.__doc__
|
|
|
|
|
|
def splitall(self):
|
|
|
return map(ifile, path.path.splitall(self))
|
|
|
splitall.__doc__ = path.path.splitall.__doc__
|
|
|
|
|
|
def relpath(self):
|
|
|
return ifile(path.path.relpath(self))
|
|
|
relpath.__doc__ = path.path.relpath.__doc__
|
|
|
|
|
|
def relpathto(self, dest):
|
|
|
return ifile(path.path.relpathto(self, dest))
|
|
|
relpathto.__doc__ = path.path.relpathto.__doc__
|
|
|
|
|
|
def listdir(self, pattern=None):
|
|
|
return [ifile(child) for child in path.path.listdir(self, pattern)]
|
|
|
listdir.__doc__ = path.path.listdir.__doc__
|
|
|
|
|
|
def dirs(self, pattern=None):
|
|
|
return [ifile(child) for child in path.path.dirs(self, pattern)]
|
|
|
dirs.__doc__ = path.path.dirs.__doc__
|
|
|
|
|
|
def files(self, pattern=None):
|
|
|
return [ifile(child) for child in path.path.files(self, pattern)]
|
|
|
files.__doc__ = path.path.files.__doc__
|
|
|
|
|
|
def walk(self, pattern=None):
|
|
|
for child in path.path.walk(self, pattern):
|
|
|
yield ifile(child)
|
|
|
walk.__doc__ = path.path.walk.__doc__
|
|
|
|
|
|
def walkdirs(self, pattern=None):
|
|
|
for child in path.path.walkdirs(self, pattern):
|
|
|
yield ifile(child)
|
|
|
walkdirs.__doc__ = path.path.walkdirs.__doc__
|
|
|
|
|
|
def walkfiles(self, pattern=None):
|
|
|
for child in path.path.walkfiles(self, pattern):
|
|
|
yield ifile(child)
|
|
|
walkfiles.__doc__ = path.path.walkfiles.__doc__
|
|
|
|
|
|
def glob(self, pattern):
|
|
|
return map(ifile, path.path.glob(self, pattern))
|
|
|
glob.__doc__ = path.path.glob.__doc__
|
|
|
|
|
|
if hasattr(os, 'readlink'):
|
|
|
def readlink(self):
|
|
|
return ifile(path.path.readlink(self))
|
|
|
readlink.__doc__ = path.path.readlink.__doc__
|
|
|
|
|
|
def readlinkabs(self):
|
|
|
return ifile(path.path.readlinkabs(self))
|
|
|
readlinkabs.__doc__ = path.path.readlinkabs.__doc__
|
|
|
|
|
|
def getmode(self):
|
|
|
return self.stat().st_mode
|
|
|
mode = property(getmode, None, None, "Access mode")
|
|
|
|
|
|
def gettype(self):
|
|
|
data = [
|
|
|
(stat.S_ISREG, "file"),
|
|
|
(stat.S_ISDIR, "dir"),
|
|
|
(stat.S_ISCHR, "chardev"),
|
|
|
(stat.S_ISBLK, "blockdev"),
|
|
|
(stat.S_ISFIFO, "fifo"),
|
|
|
(stat.S_ISLNK, "symlink"),
|
|
|
(stat.S_ISSOCK,"socket"),
|
|
|
]
|
|
|
lstat = self.lstat()
|
|
|
if lstat is not None:
|
|
|
types = set([text for (func, text) in data if func(lstat.st_mode)])
|
|
|
else:
|
|
|
types = set()
|
|
|
m = self.mode
|
|
|
types.update([text for (func, text) in data if func(m)])
|
|
|
return ", ".join(types)
|
|
|
type = property(gettype, None, None, "file type (file, directory, link, etc.)")
|
|
|
|
|
|
def getmodestr(self):
|
|
|
m = self.mode
|
|
|
data = [
|
|
|
(stat.S_IRUSR, "-r"),
|
|
|
(stat.S_IWUSR, "-w"),
|
|
|
(stat.S_IXUSR, "-x"),
|
|
|
(stat.S_IRGRP, "-r"),
|
|
|
(stat.S_IWGRP, "-w"),
|
|
|
(stat.S_IXGRP, "-x"),
|
|
|
(stat.S_IROTH, "-r"),
|
|
|
(stat.S_IWOTH, "-w"),
|
|
|
(stat.S_IXOTH, "-x"),
|
|
|
]
|
|
|
return "".join([text[bool(m&bit)] for (bit, text) in data])
|
|
|
|
|
|
modestr = property(getmodestr, None, None, "Access mode as string")
|
|
|
|
|
|
def getblocks(self):
|
|
|
return self.stat().st_blocks
|
|
|
blocks = property(getblocks, None, None, "File size in blocks")
|
|
|
|
|
|
def getblksize(self):
|
|
|
return self.stat().st_blksize
|
|
|
blksize = property(getblksize, None, None, "Filesystem block size")
|
|
|
|
|
|
def getdev(self):
|
|
|
return self.stat().st_dev
|
|
|
dev = property(getdev)
|
|
|
|
|
|
def getnlink(self):
|
|
|
return self.stat().st_nlink
|
|
|
nlink = property(getnlink, None, None, "Number of links")
|
|
|
|
|
|
def getuid(self):
|
|
|
return self.stat().st_uid
|
|
|
uid = property(getuid, None, None, "User id of file owner")
|
|
|
|
|
|
def getgid(self):
|
|
|
return self.stat().st_gid
|
|
|
gid = property(getgid, None, None, "Group id of file owner")
|
|
|
|
|
|
def getowner(self):
|
|
|
stat = self.stat()
|
|
|
try:
|
|
|
return pwd.getpwuid(stat.st_uid).pw_name
|
|
|
except KeyError:
|
|
|
return stat.st_uid
|
|
|
owner = property(getowner, None, None, "Owner name (or id)")
|
|
|
|
|
|
def getgroup(self):
|
|
|
stat = self.stat()
|
|
|
try:
|
|
|
return grp.getgrgid(stat.st_gid).gr_name
|
|
|
except KeyError:
|
|
|
return stat.st_gid
|
|
|
group = property(getgroup, None, None, "Group name (or id)")
|
|
|
|
|
|
def getadate(self):
|
|
|
return datetime.datetime.utcfromtimestamp(self.atime)
|
|
|
adate = property(getadate, None, None, "Access date")
|
|
|
|
|
|
def getcdate(self):
|
|
|
return datetime.datetime.utcfromtimestamp(self.ctime)
|
|
|
cdate = property(getcdate, None, None, "Creation date")
|
|
|
|
|
|
def getmdate(self):
|
|
|
return datetime.datetime.utcfromtimestamp(self.mtime)
|
|
|
mdate = property(getmdate, None, None, "Modification date")
|
|
|
|
|
|
def getmimetype(self):
|
|
|
return mimetypes.guess_type(self.basename())[0]
|
|
|
mimetype = property(getmimetype, None, None, "MIME type")
|
|
|
|
|
|
def getencoding(self):
|
|
|
return mimetypes.guess_type(self.basename())[1]
|
|
|
encoding = property(getencoding, None, None, "Compression")
|
|
|
|
|
|
def __repr__(self):
|
|
|
return "ifile(%s)" % path._base.__repr__(self)
|
|
|
|
|
|
defaultattrs = (None, "type", "size", "modestr", "owner", "group", "mdate")
|
|
|
|
|
|
def __xattrs__(self, mode):
|
|
|
if mode == "detail":
|
|
|
return (
|
|
|
"name", "basename()", "abspath()", "realpath()",
|
|
|
"type", "mode", "modestr", "stat()", "lstat()",
|
|
|
"uid", "gid", "owner", "group", "dev", "nlink",
|
|
|
"ctime", "mtime", "atime", "cdate", "mdate", "adate",
|
|
|
"size", "blocks", "blksize", "isdir()", "islink()",
|
|
|
"mimetype", "encoding"
|
|
|
)
|
|
|
return self.defaultattrs
|
|
|
|
|
|
def __xrepr__(self, mode):
|
|
|
yield (-1, True)
|
|
|
try:
|
|
|
if self.isdir():
|
|
|
name = "idir"
|
|
|
style = astyle.style_dir
|
|
|
else:
|
|
|
name = "ifile"
|
|
|
style = astyle.style_file
|
|
|
except IOError:
|
|
|
name = "ifile"
|
|
|
style = astyle.style_default
|
|
|
if mode == "cell" or mode in "header" or mode == "footer":
|
|
|
abspath = repr(path._base(self.normpath()))
|
|
|
if abspath.startswith("u"):
|
|
|
abspath = abspath[2:-1]
|
|
|
else:
|
|
|
abspath = abspath[1:-1]
|
|
|
if mode == "cell":
|
|
|
yield (style, abspath)
|
|
|
else:
|
|
|
yield (style, "%s(%s)" % (name, abspath))
|
|
|
else:
|
|
|
yield (style, repr(self))
|
|
|
|
|
|
def __xiter__(self, mode):
|
|
|
if self.isdir():
|
|
|
yield iparentdir(self / os.pardir)
|
|
|
for child in sorted(self.listdir()):
|
|
|
yield child
|
|
|
else:
|
|
|
f = self.open("rb")
|
|
|
for line in f:
|
|
|
yield line
|
|
|
f.close()
|
|
|
|
|
|
|
|
|
class iparentdir(ifile):
|
|
|
def __xrepr__(self, mode):
|
|
|
yield (-1, True)
|
|
|
if mode == "cell":
|
|
|
yield (astyle.style_dir, os.pardir)
|
|
|
else:
|
|
|
for part in ifile.__xrepr__(self, mode):
|
|
|
yield part
|
|
|
|
|
|
|
|
|
class ils(Table):
|
|
|
"""
|
|
|
List the current (or a specific) directory.
|
|
|
|
|
|
Examples:
|
|
|
|
|
|
>>> ils
|
|
|
>>> ils("/usr/local/lib/python2.4")
|
|
|
>>> ils("~")
|
|
|
"""
|
|
|
def __init__(self, base=os.curdir):
|
|
|
self.base = os.path.expanduser(base)
|
|
|
|
|
|
def __xiter__(self, mode):
|
|
|
return xiter(ifile(self.base), mode)
|
|
|
|
|
|
def __xrepr__(self, mode):
|
|
|
return ifile(self.base).__xrepr__(mode)
|
|
|
|
|
|
def __repr__(self):
|
|
|
return "%s.%s(%r)" % \
|
|
|
(self.__class__.__module__, self.__class__.__name__, self.base)
|
|
|
|
|
|
|
|
|
class iglob(Table):
|
|
|
"""
|
|
|
List all files and directories matching a specified pattern.
|
|
|
(See ``glob.glob()`` for more info.).
|
|
|
|
|
|
Examples:
|
|
|
|
|
|
>>> iglob("*.py")
|
|
|
"""
|
|
|
def __init__(self, glob):
|
|
|
self.glob = glob
|
|
|
|
|
|
def __xiter__(self, mode):
|
|
|
for name in glob.glob(self.glob):
|
|
|
yield ifile(name)
|
|
|
|
|
|
def __xrepr__(self, mode):
|
|
|
yield (-1, True)
|
|
|
if mode == "header" or mode == "footer" or mode == "cell":
|
|
|
yield (astyle.style_default,
|
|
|
"%s(%r)" % (self.__class__.__name__, self.glob))
|
|
|
else:
|
|
|
yield (astyle.style_default, repr(self))
|
|
|
|
|
|
def __repr__(self):
|
|
|
return "%s.%s(%r)" % \
|
|
|
(self.__class__.__module__, self.__class__.__name__, self.glob)
|
|
|
|
|
|
|
|
|
class iwalk(Table):
|
|
|
"""
|
|
|
List all files and directories in a directory and it's subdirectory.
|
|
|
|
|
|
>>> iwalk
|
|
|
>>> iwalk("/usr/local/lib/python2.4")
|
|
|
>>> iwalk("~")
|
|
|
"""
|
|
|
def __init__(self, base=os.curdir, dirs=True, files=True):
|
|
|
self.base = os.path.expanduser(base)
|
|
|
self.dirs = dirs
|
|
|
self.files = files
|
|
|
|
|
|
def __xiter__(self, mode):
|
|
|
for (dirpath, dirnames, filenames) in os.walk(self.base):
|
|
|
if self.dirs:
|
|
|
for name in sorted(dirnames):
|
|
|
yield ifile(os.path.join(dirpath, name))
|
|
|
if self.files:
|
|
|
for name in sorted(filenames):
|
|
|
yield ifile(os.path.join(dirpath, name))
|
|
|
|
|
|
def __xrepr__(self, mode):
|
|
|
yield (-1, True)
|
|
|
if mode == "header" or mode == "footer" or mode == "cell":
|
|
|
yield (astyle.style_default,
|
|
|
"%s(%r)" % (self.__class__.__name__, self.base))
|
|
|
else:
|
|
|
yield (astyle.style_default, repr(self))
|
|
|
|
|
|
def __repr__(self):
|
|
|
return "%s.%s(%r)" % \
|
|
|
(self.__class__.__module__, self.__class__.__name__, self.base)
|
|
|
|
|
|
|
|
|
class ipwdentry(object):
|
|
|
"""
|
|
|
``ipwdentry`` objects encapsulate entries in the Unix user account and
|
|
|
password database.
|
|
|
"""
|
|
|
def __init__(self, id):
|
|
|
self._id = id
|
|
|
self._entry = None
|
|
|
|
|
|
def _getentry(self):
|
|
|
if self._entry is None:
|
|
|
if isinstance(self._id, basestring):
|
|
|
self._entry = pwd.getpwnam(self._id)
|
|
|
else:
|
|
|
self._entry = pwd.getpwuid(self._id)
|
|
|
return self._entry
|
|
|
|
|
|
def getname(self):
|
|
|
if isinstance(self._id, basestring):
|
|
|
return self._id
|
|
|
else:
|
|
|
return self._getentry().pw_name
|
|
|
name = property(getname, None, None, "User name")
|
|
|
|
|
|
def getpasswd(self):
|
|
|
return self._getentry().pw_passwd
|
|
|
passwd = property(getpasswd, None, None, "Password")
|
|
|
|
|
|
def getuid(self):
|
|
|
if isinstance(self._id, basestring):
|
|
|
return self._getentry().pw_uid
|
|
|
else:
|
|
|
return self._id
|
|
|
uid = property(getuid, None, None, "User id")
|
|
|
|
|
|
def getgid(self):
|
|
|
return self._getentry().pw_gid
|
|
|
gid = property(getgid, None, None, "Primary group id")
|
|
|
|
|
|
def getgroup(self):
|
|
|
return igrpentry(self.gid)
|
|
|
group = property(getgroup, None, None, "Group")
|
|
|
|
|
|
def getgecos(self):
|
|
|
return self._getentry().pw_gecos
|
|
|
gecos = property(getgecos, None, None, "Information (e.g. full user name)")
|
|
|
|
|
|
def getdir(self):
|
|
|
return self._getentry().pw_dir
|
|
|
dir = property(getdir, None, None, "$HOME directory")
|
|
|
|
|
|
def getshell(self):
|
|
|
return self._getentry().pw_shell
|
|
|
shell = property(getshell, None, None, "Login shell")
|
|
|
|
|
|
def __xattrs__(self, mode):
|
|
|
return ("name", "passwd", "uid", "gid", "gecos", "dir", "shell")
|
|
|
|
|
|
def __repr__(self):
|
|
|
return "%s.%s(%r)" % \
|
|
|
(self.__class__.__module__, self.__class__.__name__, self._id)
|
|
|
|
|
|
|
|
|
class ipwd(Table):
|
|
|
"""
|
|
|
List all entries in the Unix user account and password database.
|
|
|
|
|
|
Example:
|
|
|
|
|
|
>>> ipwd | isort("uid")
|
|
|
"""
|
|
|
def __iter__(self):
|
|
|
for entry in pwd.getpwall():
|
|
|
yield ipwdentry(entry.pw_name)
|
|
|
|
|
|
def __xrepr__(self, mode):
|
|
|
yield (-1, True)
|
|
|
if mode == "header" or mode == "footer" or mode == "cell":
|
|
|
yield (astyle.style_default, "%s()" % self.__class__.__name__)
|
|
|
else:
|
|
|
yield (astyle.style_default, repr(self))
|
|
|
|
|
|
|
|
|
class igrpentry(object):
|
|
|
"""
|
|
|
``igrpentry`` objects encapsulate entries in the Unix group database.
|
|
|
"""
|
|
|
def __init__(self, id):
|
|
|
self._id = id
|
|
|
self._entry = None
|
|
|
|
|
|
def _getentry(self):
|
|
|
if self._entry is None:
|
|
|
if isinstance(self._id, basestring):
|
|
|
self._entry = grp.getgrnam(self._id)
|
|
|
else:
|
|
|
self._entry = grp.getgrgid(self._id)
|
|
|
return self._entry
|
|
|
|
|
|
def getname(self):
|
|
|
if isinstance(self._id, basestring):
|
|
|
return self._id
|
|
|
else:
|
|
|
return self._getentry().gr_name
|
|
|
name = property(getname, None, None, "Group name")
|
|
|
|
|
|
def getpasswd(self):
|
|
|
return self._getentry().gr_passwd
|
|
|
passwd = property(getpasswd, None, None, "Password")
|
|
|
|
|
|
def getgid(self):
|
|
|
if isinstance(self._id, basestring):
|
|
|
return self._getentry().gr_gid
|
|
|
else:
|
|
|
return self._id
|
|
|
gid = property(getgid, None, None, "Group id")
|
|
|
|
|
|
def getmem(self):
|
|
|
return self._getentry().gr_mem
|
|
|
mem = property(getmem, None, None, "Members")
|
|
|
|
|
|
def __xattrs__(self, mode):
|
|
|
return ("name", "passwd", "gid", "mem")
|
|
|
|
|
|
def __xrepr__(self, mode):
|
|
|
yield (-1, True)
|
|
|
if mode == "header" or mode == "footer" or mode == "cell":
|
|
|
yield (astyle.style_default, "group ")
|
|
|
try:
|
|
|
yield (astyle.style_default, self.name)
|
|
|
except KeyError:
|
|
|
if isinstance(self._id, basestring):
|
|
|
yield (astyle.style_default, self.name_id)
|
|
|
else:
|
|
|
yield (astyle.style_type_number, str(self._id))
|
|
|
else:
|
|
|
yield (astyle.style_default, repr(self))
|
|
|
|
|
|
def __xiter__(self, mode):
|
|
|
for member in self.mem:
|
|
|
yield ipwdentry(member)
|
|
|
|
|
|
def __repr__(self):
|
|
|
return "%s.%s(%r)" % \
|
|
|
(self.__class__.__module__, self.__class__.__name__, self._id)
|
|
|
|
|
|
|
|
|
class igrp(Table):
|
|
|
"""
|
|
|
This ``Table`` lists all entries in the Unix group database.
|
|
|
"""
|
|
|
def __xiter__(self, mode):
|
|
|
for entry in grp.getgrall():
|
|
|
yield igrpentry(entry.gr_name)
|
|
|
|
|
|
def __xrepr__(self, mode):
|
|
|
yield (-1, False)
|
|
|
if mode == "header" or mode == "footer":
|
|
|
yield (astyle.style_default, "%s()" % self.__class__.__name__)
|
|
|
else:
|
|
|
yield (astyle.style_default, repr(self))
|
|
|
|
|
|
|
|
|
class Fields(object):
|
|
|
def __init__(self, fieldnames, **fields):
|
|
|
self.__fieldnames = fieldnames
|
|
|
for (key, value) in fields.iteritems():
|
|
|
setattr(self, key, value)
|
|
|
|
|
|
def __xattrs__(self, mode):
|
|
|
return self.__fieldnames
|
|
|
|
|
|
def __xrepr__(self, mode):
|
|
|
yield (-1, False)
|
|
|
if mode == "header" or mode == "cell":
|
|
|
yield (astyle.style_default, self.__class__.__name__)
|
|
|
yield (astyle.style_default, "(")
|
|
|
for (i, f) in enumerate(self.__fieldnames):
|
|
|
if i:
|
|
|
yield (astyle.style_default, ", ")
|
|
|
yield (astyle.style_default, f)
|
|
|
yield (astyle.style_default, "=")
|
|
|
for part in xrepr(getattr(self, f), "default"):
|
|
|
yield part
|
|
|
yield (astyle.style_default, ")")
|
|
|
elif mode == "footer":
|
|
|
yield (astyle.style_default, self.__class__.__name__)
|
|
|
yield (astyle.style_default, "(")
|
|
|
for (i, f) in enumerate(self.__fieldnames):
|
|
|
if i:
|
|
|
yield (astyle.style_default, ", ")
|
|
|
yield (astyle.style_default, f)
|
|
|
yield (astyle.style_default, ")")
|
|
|
else:
|
|
|
yield (astyle.style_default, repr(self))
|
|
|
|
|
|
|
|
|
class FieldTable(Table, list):
|
|
|
def __init__(self, *fields):
|
|
|
Table.__init__(self)
|
|
|
list.__init__(self)
|
|
|
self.fields = fields
|
|
|
|
|
|
def add(self, **fields):
|
|
|
self.append(Fields(self.fields, **fields))
|
|
|
|
|
|
def __xiter__(self, mode):
|
|
|
return list.__iter__(self)
|
|
|
|
|
|
def __xrepr__(self, mode):
|
|
|
yield (-1, False)
|
|
|
if mode == "header" or mode == "footer":
|
|
|
yield (astyle.style_default, self.__class__.__name__)
|
|
|
yield (astyle.style_default, "(")
|
|
|
for (i, f) in enumerate(self.__fieldnames):
|
|
|
if i:
|
|
|
yield (astyle.style_default, ", ")
|
|
|
yield (astyle.style_default, f)
|
|
|
yield (astyle.style_default, ")")
|
|
|
else:
|
|
|
yield (astyle.style_default, repr(self))
|
|
|
|
|
|
def __repr__(self):
|
|
|
return "<%s.%s object with fields=%r at 0x%x>" % \
|
|
|
(self.__class__.__module__, self.__class__.__name__,
|
|
|
", ".join(map(repr, self.fields)), id(self))
|
|
|
|
|
|
|
|
|
class List(list):
|
|
|
def __xattrs__(self, mode):
|
|
|
return xrange(len(self))
|
|
|
|
|
|
def __xrepr__(self, mode):
|
|
|
yield (-1, False)
|
|
|
if mode == "header" or mode == "cell" or mode == "footer" or mode == "default":
|
|
|
yield (astyle.style_default, self.__class__.__name__)
|
|
|
yield (astyle.style_default, "(")
|
|
|
for (i, item) in enumerate(self):
|
|
|
if i:
|
|
|
yield (astyle.style_default, ", ")
|
|
|
for part in xrepr(item, "default"):
|
|
|
yield part
|
|
|
yield (astyle.style_default, ")")
|
|
|
else:
|
|
|
yield (astyle.style_default, repr(self))
|
|
|
|
|
|
|
|
|
class ienv(Table):
|
|
|
"""
|
|
|
List environment variables.
|
|
|
|
|
|
Example:
|
|
|
|
|
|
>>> ienv
|
|
|
"""
|
|
|
|
|
|
def __xiter__(self, mode):
|
|
|
fields = ("key", "value")
|
|
|
for (key, value) in os.environ.iteritems():
|
|
|
yield Fields(fields, key=key, value=value)
|
|
|
|
|
|
def __xrepr__(self, mode):
|
|
|
yield (-1, True)
|
|
|
if mode == "header" or mode == "cell":
|
|
|
yield (astyle.style_default, "%s()" % self.__class__.__name__)
|
|
|
else:
|
|
|
yield (astyle.style_default, repr(self))
|
|
|
|
|
|
|
|
|
class icsv(Pipe):
|
|
|
"""
|
|
|
This ``Pipe`` lists turn the input (with must be a pipe outputting lines
|
|
|
or an ``ifile``) into lines of CVS columns.
|
|
|
"""
|
|
|
def __init__(self, **csvargs):
|
|
|
"""
|
|
|
Create an ``icsv`` object. ``cvsargs`` will be passed through as
|
|
|
keyword arguments to ``cvs.reader()``.
|
|
|
"""
|
|
|
self.csvargs = csvargs
|
|
|
|
|
|
def __xiter__(self, mode):
|
|
|
input = self.input
|
|
|
if isinstance(input, ifile):
|
|
|
input = input.open("rb")
|
|
|
reader = csv.reader(input, **self.csvargs)
|
|
|
for line in reader:
|
|
|
yield List(line)
|
|
|
|
|
|
def __xrepr__(self, mode):
|
|
|
yield (-1, False)
|
|
|
if mode == "header" or mode == "footer":
|
|
|
input = getattr(self, "input", None)
|
|
|
if input is not None:
|
|
|
for part in xrepr(input, mode):
|
|
|
yield part
|
|
|
yield (astyle.style_default, " | ")
|
|
|
yield (astyle.style_default, "%s(" % self.__class__.__name__)
|
|
|
for (i, (name, value)) in enumerate(self.csvargs.iteritems()):
|
|
|
if i:
|
|
|
yield (astyle.style_default, ", ")
|
|
|
yield (astyle.style_default, name)
|
|
|
yield (astyle.style_default, "=")
|
|
|
for part in xrepr(value, "default"):
|
|
|
yield part
|
|
|
yield (astyle.style_default, ")")
|
|
|
else:
|
|
|
yield (astyle.style_default, repr(self))
|
|
|
|
|
|
def __repr__(self):
|
|
|
args = ", ".join(["%s=%r" % item for item in self.csvargs.iteritems()])
|
|
|
return "<%s.%s %s at 0x%x>" % \
|
|
|
(self.__class__.__module__, self.__class__.__name__, args, id(self))
|
|
|
|
|
|
|
|
|
class ix(Table):
|
|
|
"""
|
|
|
Execute a system command and list its output as lines
|
|
|
(similar to ``os.popen()``).
|
|
|
|
|
|
Examples:
|
|
|
|
|
|
>>> ix("ps x")
|
|
|
>>> ix("find .") | ifile
|
|
|
"""
|
|
|
def __init__(self, cmd):
|
|
|
self.cmd = cmd
|
|
|
self._pipe = None
|
|
|
|
|
|
def __xiter__(self, mode):
|
|
|
self._pipe = os.popen(self.cmd)
|
|
|
for l in self._pipe:
|
|
|
yield l.rstrip("\r\n")
|
|
|
self._pipe.close()
|
|
|
self._pipe = None
|
|
|
|
|
|
def __del__(self):
|
|
|
if self._pipe is not None and not self._pipe.closed:
|
|
|
self._pipe.close()
|
|
|
self._pipe = None
|
|
|
|
|
|
def __xrepr__(self, mode):
|
|
|
yield (-1, True)
|
|
|
if mode == "header" or mode == "footer":
|
|
|
yield (astyle.style_default,
|
|
|
"%s(%r)" % (self.__class__.__name__, self.cmd))
|
|
|
else:
|
|
|
yield (astyle.style_default, repr(self))
|
|
|
|
|
|
def __repr__(self):
|
|
|
return "%s.%s(%r)" % \
|
|
|
(self.__class__.__module__, self.__class__.__name__, self.cmd)
|
|
|
|
|
|
|
|
|
class ifilter(Pipe):
|
|
|
"""
|
|
|
Filter an input pipe. Only objects where an expression evaluates to true
|
|
|
(and doesn't raise an exception) are listed.
|
|
|
|
|
|
Examples:
|
|
|
|
|
|
>>> ils | ifilter("_.isfile() and size>1000")
|
|
|
>>> igrp | ifilter("len(mem)")
|
|
|
>>> sys.modules | ifilter(lambda _:_.value is not None)
|
|
|
"""
|
|
|
|
|
|
def __init__(self, expr, globals=None, errors="raiseifallfail"):
|
|
|
"""
|
|
|
Create an ``ifilter`` object. ``expr`` can be a callable or a string
|
|
|
containing an expression. ``globals`` will be used as the global
|
|
|
namespace for calling string expressions (defaulting to IPython's
|
|
|
user namespace). ``errors`` specifies how exception during evaluation
|
|
|
of ``expr`` are handled:
|
|
|
|
|
|
* ``drop``: drop all items that have errors;
|
|
|
|
|
|
* ``keep``: keep all items that have errors;
|
|
|
|
|
|
* ``keeperror``: keep the exception of all items that have errors;
|
|
|
|
|
|
* ``raise``: raise the exception;
|
|
|
|
|
|
* ``raiseifallfail``: raise the first exception if all items have errors;
|
|
|
otherwise drop those with errors (this is the default).
|
|
|
"""
|
|
|
self.expr = expr
|
|
|
self.globals = globals
|
|
|
self.errors = errors
|
|
|
|
|
|
def __xiter__(self, mode):
|
|
|
if callable(self.expr):
|
|
|
def test(item):
|
|
|
return self.expr(item)
|
|
|
else:
|
|
|
g = getglobals(self.globals)
|
|
|
def test(item):
|
|
|
return eval(self.expr, g, AttrNamespace(item))
|
|
|
|
|
|
ok = 0
|
|
|
exc_info = None
|
|
|
for item in xiter(self.input, mode):
|
|
|
try:
|
|
|
if test(item):
|
|
|
yield item
|
|
|
ok += 1
|
|
|
except (KeyboardInterrupt, SystemExit):
|
|
|
raise
|
|
|
except Exception, exc:
|
|
|
if self.errors == "drop":
|
|
|
pass # Ignore errors
|
|
|
elif self.errors == "keep":
|
|
|
yield item
|
|
|
elif self.errors == "keeperror":
|
|
|
yield exc
|
|
|
elif self.errors == "raise":
|
|
|
raise
|
|
|
elif self.errors == "raiseifallfail":
|
|
|
if exc_info is None:
|
|
|
exc_info = sys.exc_info()
|
|
|
if not ok and exc_info is not None:
|
|
|
raise exc_info[0], exc_info[1], exc_info[2]
|
|
|
|
|
|
def __xrepr__(self, mode):
|
|
|
yield (-1, True)
|
|
|
if mode == "header" or mode == "footer":
|
|
|
input = getattr(self, "input", None)
|
|
|
if input is not None:
|
|
|
for part in xrepr(input, mode):
|
|
|
yield part
|
|
|
yield (astyle.style_default, " | ")
|
|
|
yield (astyle.style_default, "%s(" % self.__class__.__name__)
|
|
|
for part in xrepr(self.expr, "default"):
|
|
|
yield part
|
|
|
yield (astyle.style_default, ")")
|
|
|
else:
|
|
|
yield (astyle.style_default, repr(self))
|
|
|
|
|
|
def __repr__(self):
|
|
|
return "<%s.%s expr=%r at 0x%x>" % \
|
|
|
(self.__class__.__module__, self.__class__.__name__,
|
|
|
self.expr, id(self))
|
|
|
|
|
|
|
|
|
class ieval(Pipe):
|
|
|
"""
|
|
|
Evaluate an expression for each object in the input pipe.
|
|
|
|
|
|
Examples:
|
|
|
|
|
|
>>> ils | ieval("_.abspath()")
|
|
|
>>> sys.path | ieval(ifile)
|
|
|
"""
|
|
|
|
|
|
def __init__(self, expr, globals=None, errors="raiseifallfail"):
|
|
|
"""
|
|
|
Create an ``ieval`` object. ``expr`` can be a callable or a string
|
|
|
containing an expression. For the meaning of ``globals`` and
|
|
|
``errors`` see ``ifilter``.
|
|
|
"""
|
|
|
self.expr = expr
|
|
|
self.globals = globals
|
|
|
self.errors = errors
|
|
|
|
|
|
def __xiter__(self, mode):
|
|
|
if callable(self.expr):
|
|
|
def do(item):
|
|
|
return self.expr(item)
|
|
|
else:
|
|
|
g = getglobals(self.globals)
|
|
|
def do(item):
|
|
|
return eval(self.expr, g, AttrNamespace(item))
|
|
|
|
|
|
ok = 0
|
|
|
exc_info = None
|
|
|
for item in xiter(self.input, mode):
|
|
|
try:
|
|
|
yield do(item)
|
|
|
except (KeyboardInterrupt, SystemExit):
|
|
|
raise
|
|
|
except Exception, exc:
|
|
|
if self.errors == "drop":
|
|
|
pass # Ignore errors
|
|
|
elif self.errors == "keep":
|
|
|
yield item
|
|
|
elif self.errors == "keeperror":
|
|
|
yield exc
|
|
|
elif self.errors == "raise":
|
|
|
raise
|
|
|
elif self.errors == "raiseifallfail":
|
|
|
if exc_info is None:
|
|
|
exc_info = sys.exc_info()
|
|
|
if not ok and exc_info is not None:
|
|
|
raise exc_info[0], exc_info[1], exc_info[2]
|
|
|
|
|
|
def __xrepr__(self, mode):
|
|
|
yield (-1, True)
|
|
|
if mode == "header" or mode == "footer":
|
|
|
input = getattr(self, "input", None)
|
|
|
if input is not None:
|
|
|
for part in xrepr(input, mode):
|
|
|
yield part
|
|
|
yield (astyle.style_default, " | ")
|
|
|
yield (astyle.style_default, "%s(" % self.__class__.__name__)
|
|
|
for part in xrepr(self.expr, "default"):
|
|
|
yield part
|
|
|
yield (astyle.style_default, ")")
|
|
|
else:
|
|
|
yield (astyle.style_default, repr(self))
|
|
|
|
|
|
def __repr__(self):
|
|
|
return "<%s.%s expr=%r at 0x%x>" % \
|
|
|
(self.__class__.__module__, self.__class__.__name__,
|
|
|
self.expr, id(self))
|
|
|
|
|
|
|
|
|
class ienum(Pipe):
|
|
|
"""
|
|
|
Enumerate the input pipe (i.e. wrap each input object in an object
|
|
|
with ``index`` and ``object`` attributes).
|
|
|
|
|
|
Examples:
|
|
|
|
|
|
>>> xrange(20) | ieval("_,_*_") | ienum | ifilter("index % 2 == 0") | ieval("object")
|
|
|
"""
|
|
|
def __xiter__(self, mode):
|
|
|
fields = ("index", "object")
|
|
|
for (index, object) in enumerate(xiter(self.input, mode)):
|
|
|
yield Fields(fields, index=index, object=object)
|
|
|
|
|
|
|
|
|
class isort(Pipe):
|
|
|
"""
|
|
|
Sorts the input pipe.
|
|
|
|
|
|
Examples:
|
|
|
|
|
|
>>> ils | isort("size")
|
|
|
>>> ils | isort("_.isdir(), _.lower()", reverse=True)
|
|
|
"""
|
|
|
|
|
|
def __init__(self, key, globals=None, reverse=False):
|
|
|
"""
|
|
|
Create an ``isort`` object. ``key`` can be a callable or a string
|
|
|
containing an expression. If ``reverse`` is true the sort order will
|
|
|
be reversed. For the meaning of ``globals`` see ``ifilter``.
|
|
|
"""
|
|
|
self.key = key
|
|
|
self.globals = globals
|
|
|
self.reverse = reverse
|
|
|
|
|
|
def __xiter__(self, mode):
|
|
|
if callable(self.key):
|
|
|
items = sorted(
|
|
|
xiter(self.input, mode),
|
|
|
key=self.key,
|
|
|
reverse=self.reverse
|
|
|
)
|
|
|
else:
|
|
|
g = getglobals(self.globals)
|
|
|
def key(item):
|
|
|
return eval(self.key, g, AttrNamespace(item))
|
|
|
items = sorted(
|
|
|
xiter(self.input, mode),
|
|
|
key=key,
|
|
|
reverse=self.reverse
|
|
|
)
|
|
|
for item in items:
|
|
|
yield item
|
|
|
|
|
|
def __xrepr__(self, mode):
|
|
|
yield (-1, True)
|
|
|
if mode == "header" or mode == "footer":
|
|
|
input = getattr(self, "input", None)
|
|
|
if input is not None:
|
|
|
for part in xrepr(input, mode):
|
|
|
yield part
|
|
|
yield (astyle.style_default, " | ")
|
|
|
yield (astyle.style_default, "%s(" % self.__class__.__name__)
|
|
|
for part in xrepr(self.key, "default"):
|
|
|
yield part
|
|
|
if self.reverse:
|
|
|
yield (astyle.style_default, ", ")
|
|
|
for part in xrepr(True, "default"):
|
|
|
yield part
|
|
|
yield (astyle.style_default, ")")
|
|
|
else:
|
|
|
yield (astyle.style_default, repr(self))
|
|
|
|
|
|
def __repr__(self):
|
|
|
return "<%s.%s key=%r reverse=%r at 0x%x>" % \
|
|
|
(self.__class__.__module__, self.__class__.__name__,
|
|
|
self.key, self.reverse, id(self))
|
|
|
|
|
|
|
|
|
tab = 3 # for expandtabs()
|
|
|
|
|
|
def _format(field):
|
|
|
if isinstance(field, str):
|
|
|
text = repr(field.expandtabs(tab))[1:-1]
|
|
|
elif isinstance(field, unicode):
|
|
|
text = repr(field.expandtabs(tab))[2:-1]
|
|
|
elif isinstance(field, datetime.datetime):
|
|
|
# Don't use strftime() here, as this requires year >= 1900
|
|
|
text = "%04d-%02d-%02d %02d:%02d:%02d.%06d" % \
|
|
|
(field.year, field.month, field.day,
|
|
|
field.hour, field.minute, field.second, field.microsecond)
|
|
|
elif isinstance(field, datetime.date):
|
|
|
text = "%04d-%02d-%02d" % (field.year, field.month, field.day)
|
|
|
else:
|
|
|
text = repr(field)
|
|
|
return text
|
|
|
|
|
|
|
|
|
class Display(object):
|
|
|
class __metaclass__(type):
|
|
|
def __ror__(self, input):
|
|
|
return input | self()
|
|
|
|
|
|
def __ror__(self, input):
|
|
|
self.input = input
|
|
|
return self
|
|
|
|
|
|
def display(self):
|
|
|
pass
|
|
|
|
|
|
|
|
|
class iless(Display):
|
|
|
cmd = "less --quit-if-one-screen --LONG-PROMPT --LINE-NUMBERS --chop-long-lines --shift=8 --RAW-CONTROL-CHARS"
|
|
|
|
|
|
def display(self):
|
|
|
try:
|
|
|
pager = os.popen(self.cmd, "w")
|
|
|
try:
|
|
|
for item in xiter(self.input, "default"):
|
|
|
attrs = xattrs(item, "default")
|
|
|
attrs = ["%s=%s" % (a, _format(_getattr(item, a))) for a in attrs]
|
|
|
pager.write(" ".join(attrs))
|
|
|
pager.write("\n")
|
|
|
finally:
|
|
|
pager.close()
|
|
|
except Exception, exc:
|
|
|
print "%s: %s" % (exc.__class__.__name__, str(exc))
|
|
|
|
|
|
|
|
|
def xformat(value, mode, maxlength):
|
|
|
align = None
|
|
|
full = False
|
|
|
width = 0
|
|
|
text = astyle.Text()
|
|
|
for part in xrepr(value, mode):
|
|
|
# part is (alignment, stop)
|
|
|
if isinstance(part[0], int):
|
|
|
# only consider the first occurence
|
|
|
if align is None:
|
|
|
align = part[0]
|
|
|
full = part[1]
|
|
|
# part is (style, text)
|
|
|
else:
|
|
|
text.append(part)
|
|
|
width += len(part[1])
|
|
|
if width >= maxlength and not full:
|
|
|
text.append((astyle.style_ellisis, "..."))
|
|
|
width += 3
|
|
|
break
|
|
|
if align is None: # default to left alignment
|
|
|
align = -1
|
|
|
return (align, width, text)
|
|
|
|
|
|
|
|
|
class idump(Display):
|
|
|
# The approximate maximum length of a column entry
|
|
|
maxattrlength = 200
|
|
|
|
|
|
# Style for column names
|
|
|
style_header = astyle.Style.fromstr("white:black:bold")
|
|
|
|
|
|
def __init__(self, *attrs):
|
|
|
self.attrs = attrs
|
|
|
self.headerpadchar = " "
|
|
|
self.headersepchar = "|"
|
|
|
self.datapadchar = " "
|
|
|
self.datasepchar = "|"
|
|
|
|
|
|
def display(self):
|
|
|
stream = genutils.Term.cout
|
|
|
allattrs = []
|
|
|
allattrset = set()
|
|
|
colwidths = {}
|
|
|
rows = []
|
|
|
for item in xiter(self.input, "default"):
|
|
|
row = {}
|
|
|
attrs = self.attrs
|
|
|
if not attrs:
|
|
|
attrs = xattrs(item, "default")
|
|
|
for attrname in attrs:
|
|
|
if attrname not in allattrset:
|
|
|
allattrs.append(attrname)
|
|
|
allattrset.add(attrname)
|
|
|
colwidths[attrname] = len(_attrname(attrname))
|
|
|
try:
|
|
|
value = _getattr(item, attrname, None)
|
|
|
except (KeyboardInterrupt, SystemExit):
|
|
|
raise
|
|
|
except Exception, exc:
|
|
|
value = exc
|
|
|
(align, width, text) = xformat(value, "cell", self.maxattrlength)
|
|
|
colwidths[attrname] = max(colwidths[attrname], width)
|
|
|
# remember alignment, length and colored parts
|
|
|
row[attrname] = (align, width, text)
|
|
|
rows.append(row)
|
|
|
|
|
|
stream.write("\n")
|
|
|
for (i, attrname) in enumerate(allattrs):
|
|
|
self.style_header(_attrname(attrname)).write(stream)
|
|
|
spc = colwidths[attrname] - len(_attrname(attrname))
|
|
|
if i < len(colwidths)-1:
|
|
|
stream.write(self.headerpadchar*spc)
|
|
|
stream.write(self.headersepchar)
|
|
|
stream.write("\n")
|
|
|
|
|
|
for row in rows:
|
|
|
for (i, attrname) in enumerate(allattrs):
|
|
|
(align, width, text) = row[attrname]
|
|
|
spc = colwidths[attrname] - width
|
|
|
if align == -1:
|
|
|
text.write(stream)
|
|
|
if i < len(colwidths)-1:
|
|
|
stream.write(self.datapadchar*spc)
|
|
|
elif align == 0:
|
|
|
spc = colwidths[attrname] - width
|
|
|
spc1 = spc//2
|
|
|
spc2 = spc-spc1
|
|
|
stream.write(self.datapadchar*spc1)
|
|
|
text.write(stream)
|
|
|
if i < len(colwidths)-1:
|
|
|
stream.write(self.datapadchar*spc2)
|
|
|
else:
|
|
|
stream.write(self.datapadchar*spc)
|
|
|
text.write(stream)
|
|
|
if i < len(colwidths)-1:
|
|
|
stream.write(self.datasepchar)
|
|
|
stream.write("\n")
|
|
|
|
|
|
|
|
|
class XMode(object):
|
|
|
"""
|
|
|
An ``XMode`` object describes one enter mode available for an object
|
|
|
"""
|
|
|
def __init__(self, object, mode, title=None, description=None):
|
|
|
"""
|
|
|
Create a new ``XMode`` object for the object ``object``. This object
|
|
|
must support the enter mode ``mode`` (i.e. ``object.__xiter__(mode)``
|
|
|
must return an iterable). ``title`` and ``description`` will be
|
|
|
displayed in the browser when selecting among the available modes.
|
|
|
"""
|
|
|
self.object = object
|
|
|
self.mode = mode
|
|
|
self.title = title
|
|
|
self.description = description
|
|
|
|
|
|
def __repr__(self):
|
|
|
return "<%s.%s object mode=%r at 0x%x>" % \
|
|
|
(self.__class__.__module__, self.__class__.__name__,
|
|
|
self.mode, id(self))
|
|
|
|
|
|
def __xrepr__(self, mode):
|
|
|
yield (-1, True)
|
|
|
if mode == "header" or mode == "footer":
|
|
|
yield (astyle.style_default, self.title)
|
|
|
else:
|
|
|
yield (astyle.style_default, repr(self))
|
|
|
|
|
|
def __xattrs__(self, mode):
|
|
|
if mode == "detail":
|
|
|
return ("object", "mode", "title", "description")
|
|
|
return ("title", "description")
|
|
|
|
|
|
def __xiter__(self, mode):
|
|
|
return xiter(self.object, self.mode)
|
|
|
|
|
|
|
|
|
class XAttr(object):
|
|
|
def __init__(self, object, name):
|
|
|
self.name = _attrname(name)
|
|
|
|
|
|
try:
|
|
|
self.value = _getattr(object, name)
|
|
|
except (KeyboardInterrupt, SystemExit):
|
|
|
raise
|
|
|
except Exception, exc:
|
|
|
if exc.__class__.__module__ == "exceptions":
|
|
|
self.value = exc.__class__.__name__
|
|
|
else:
|
|
|
self.value = "%s.%s" % \
|
|
|
(exc.__class__.__module__, exc.__class__.__name__)
|
|
|
self.type = self.value
|
|
|
else:
|
|
|
t = type(self.value)
|
|
|
if t.__module__ == "__builtin__":
|
|
|
self.type = t.__name__
|
|
|
else:
|
|
|
self.type = "%s.%s" % (t.__module__, t.__name__)
|
|
|
|
|
|
doc = None
|
|
|
if isinstance(name, basestring):
|
|
|
if name.endswith("()"):
|
|
|
doc = getattr(getattr(object, name[:-2]), "__doc__", None)
|
|
|
else:
|
|
|
try:
|
|
|
meta = getattr(type(object), name)
|
|
|
except AttributeError:
|
|
|
pass
|
|
|
else:
|
|
|
if isinstance(meta, property):
|
|
|
doc = getattr(meta, "__doc__", None)
|
|
|
elif callable(name):
|
|
|
doc = getattr(name, "__doc__", None)
|
|
|
if isinstance(doc, basestring):
|
|
|
doc = doc.strip()
|
|
|
self.doc = doc
|
|
|
|
|
|
def __xattrs__(self, mode):
|
|
|
return ("name", "type", "doc", "value")
|
|
|
|
|
|
|
|
|
try:
|
|
|
from ibrowse import ibrowse
|
|
|
except ImportError:
|
|
|
# No curses (probably Windows) => use ``idump`` as the default display.
|
|
|
defaultdisplay = idump
|
|
|
else:
|
|
|
defaultdisplay = ibrowse
|
|
|
__all__.append("ibrowse")
|
|
|
|
|
|
|
|
|
# If we're running under IPython, install an IPython displayhook that
|
|
|
# returns the object from Display.display(), else install a displayhook
|
|
|
# directly as sys.displayhook
|
|
|
api = None
|
|
|
if ipapi is not None:
|
|
|
try:
|
|
|
api = ipapi.get()
|
|
|
except AttributeError:
|
|
|
pass
|
|
|
|
|
|
if api is not None:
|
|
|
def displayhook(self, obj):
|
|
|
if isinstance(obj, type) and issubclass(obj, Table):
|
|
|
obj = obj()
|
|
|
if isinstance(obj, Table):
|
|
|
obj = obj | defaultdisplay
|
|
|
if isinstance(obj, Display):
|
|
|
return obj.display()
|
|
|
else:
|
|
|
raise ipapi.TryNext
|
|
|
api.set_hook("result_display", displayhook)
|
|
|
else:
|
|
|
def installdisplayhook():
|
|
|
_originalhook = sys.displayhook
|
|
|
def displayhook(obj):
|
|
|
if isinstance(obj, type) and issubclass(obj, Table):
|
|
|
obj = obj()
|
|
|
if isinstance(obj, Table):
|
|
|
obj = obj | defaultdisplay
|
|
|
if isinstance(obj, Display):
|
|
|
return obj.display()
|
|
|
else:
|
|
|
_originalhook(obj)
|
|
|
sys.displayhook = displayhook
|
|
|
installdisplayhook()
|
|
|
|
