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* Retrieve and process summary or full ledgers. * Search using arbitrary criteria (any Python function). * Search using arbitrary formats (any Python function). * Caches ledgers as .gz files to avoid repeated server requests. * Handles ledger numbers, ranges, and special names like validated or closed.
50 lines
1.5 KiB
Python
50 lines
1.5 KiB
Python
from __future__ import absolute_import, division, print_function, unicode_literals
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"""A function that can be specified at the command line, with an argument."""
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import importlib
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import re
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MATCHER = re.compile(r'([\w.]+)(.*)')
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def _split_function(desc):
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m = MATCHER.match(desc)
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if not m:
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raise ValueError('"%s" is not a function' % desc)
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name, args = (g.strip() for g in m.groups())
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args = eval(args or '()') # Yes, really eval()!
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if not isinstance(args, tuple):
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args = (args,)
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return name, args
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class Function(object):
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def __init__(self, desc='', default_path=''):
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self.desc = desc.strip()
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if not self.desc:
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# Make an empty function that does nothing.
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self.args = ()
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self.function = lambda *args, **kwds: None
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return
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self.function, self.args = _split_function(self.desc)
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if '.' not in self.function:
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if default_path and not default_path.endswith('.'):
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default_path += '.'
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self.function = default_path + self.function
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p, m = self.function.rsplit('.', 1)
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try:
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mod = importlib.import_module(p)
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except:
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raise ValueError('Can\'t find Python module "%s"' % p)
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try:
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self.function = getattr(mod, m)
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except:
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raise ValueError('No function "%s" in module "%s"' % (p, m))
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def __str__(self):
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return self.desc
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def __call__(self, *args, **kwds):
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return self.function(*(args + self.args), **kwds)
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