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Add optional argument in_memory to FastSS __init__ and open to store index in dictionary #1

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Add optional argument in_memory to FastSS __init__ and open to store index in dictionary #1

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11 changes: 8 additions & 3 deletions fastss.py
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Original file line number Diff line number Diff line change
Expand Up @@ -139,7 +139,7 @@ def bytes2set(b):
# FastSS class

class FastSS:
def __init__(self, path, flag='c', max_dist=2):
def __init__(self, path, flag='c', max_dist=2, in_memory=False):
"""Open an FastSS index file on <path>.

flag: the mode in which the index is opened. Use "r" for read-only,
Expand All @@ -158,6 +158,11 @@ def __init__(self, path, flag='c', max_dist=2):
self.max_dist = max_dist
self.db[MAXDIST_KEY] = int2byte(max_dist)

if in_memory:
d = dict(self.db)
self.db.close()
self.db = d

def __enter__(self):
return self

Expand All @@ -171,9 +176,9 @@ def __contains__(self, word):
return False

@classmethod
def open(cls, path, flag='c', max_dist=2):
def open(cls, path, flag='c', max_dist=2, in_memory=False):
"""Conventional interface for opening FastSS index file"""
return cls(path, flag, max_dist)
return cls(path, flag, max_dist, in_memory=in_memory)

def close(self):
self.db.close()
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