62 lines
1.4 KiB
Python
62 lines
1.4 KiB
Python
from io import BytesIO
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import os
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__author__ = 'hoffer'
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MONKEYFS_PREFIX = 'monkeyfs://'
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open_orig = open
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class VirtualFile(BytesIO):
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_vfs = {} # virtual File-System
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def __init__(self, name, mode='r', buffering=None):
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if not name.startswith(MONKEYFS_PREFIX):
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name = MONKEYFS_PREFIX + name
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self.name = name
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self._mode = mode
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if name in VirtualFile._vfs:
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super(VirtualFile, self).__init__(self._vfs[name])
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else:
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super(VirtualFile, self).__init__('')
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def flush(self):
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super(VirtualFile, self).flush()
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VirtualFile._vfs[self.name] = self.getvalue()
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@staticmethod
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def getsize(path):
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return len(VirtualFile._vfs[path])
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@staticmethod
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def isfile(path):
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return path in VirtualFile._vfs
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def getsize(path):
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if path.startswith(MONKEYFS_PREFIX):
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return VirtualFile.getsize(path)
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else:
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return os.stat(path).st_size
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def isfile(path):
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if path.startswith(MONKEYFS_PREFIX):
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return VirtualFile.isfile(path)
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else:
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return os.path.isfile(path)
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def virtual_path(name):
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return "%s%s" % (MONKEYFS_PREFIX, name)
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def open(name, mode='r', buffering=-1):
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# use normal open for regular paths, and our "virtual" open for monkeyfs:// paths
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if name.startswith(MONKEYFS_PREFIX):
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return VirtualFile(name, mode, buffering)
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else:
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return open_orig(name, mode=mode, buffering=buffering)
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