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import sys
import os
import random
import gzip
import pickle
import optparse
import ahocorasick
from optparse import OptionParser
def main():
options = parse_args()
app = TestApplication(options)
app.run()
chars = 'abcdefghijklmnopqestuvwxyzABCDEFGHIJKLMNOPQESTUVWXYZ0123456789.,;:-'
class TestApplication(object):
def __init__(self, options):
self.options = options
self.words = []
random.seed(options.seed)
def run(self):
self.A = ahocorasick.Automaton()
self.add_words()
self.remove()
def add_words(self):
if self.options.random:
self.__add_random_words()
else:
self.__add_from_file()
print("Automaton statistics:")
d = self.A.get_stats()
print("- nodes_count : %d" % d['nodes_count'])
print("- words_count : %d" % d['words_count'])
print("- links_count : %d" % d['links_count'])
print("- longest_word : %d" % d['longest_word'])
print("- sizeof_node : %d" % d['sizeof_node'])
print("- total_size : %d" % d['total_size'])
def remove(self):
print("Removing %d words" % len(self.words))
random.shuffle(self.words)
for word in self.words:
self.A.remove_word(word)
print("Automaton statistics:")
d = self.A.get_stats()
print("- nodes_count : %d" % d['nodes_count'])
print("- words_count : %d" % d['words_count'])
print("- links_count : %d" % d['links_count'])
print("- longest_word : %d" % d['longest_word'])
print("- sizeof_node : %d" % d['sizeof_node'])
print("- total_size : %d" % d['total_size'])
def __add_random_words(self):
n = self.options.words
print("Adding %d words" % n)
while n > 0:
word = self.generate_random_word()
if self.A.add_word(word, True):
n -= 1
self.words.append(word)
def __add_from_file(self):
n = self.options.words
print("Adding %d words from %s" % (n, self.options.file_gz))
for i, word in enumerate(self.read()):
if i > n:
return
self.A.add_word(word, True)
self.words.append(word)
def generate_words(self):
if self.options.random:
self.__generate_random_words()
else:
self.__load_words()
def __generate_random_words(self):
n = self.options.words
print("Generating %d words" % n)
while len(self.words) < n:
word = self.generate_random_word()
self.words.add(word)
def __load_words(self):
n = self.options.words
print ("Loading %d words from %s" % (n, self.options.file_gz))
for i, word in enumerate(self.read()):
if i < n:
self.words.add(word)
else:
return
def read(self):
with gzip.open(self.options.file_gz, "rt", encoding="utf-8") as f:
for line in f:
yield line.strip()
def generate_random_word(self):
n = random.randint(1, self.options.maxlength + 1)
s = ''
for i in range(n):
s += random.choice(chars)
return s
def format_size(size):
units = [
('GB', 1024**3),
('MB', 1024**2),
('kB', 1024),
]
for suffix, threshold in units:
if size > threshold:
return '%0.2f %s (%d bytes)' % (float(size)/threshold, suffix, size)
return '%d bytes' % size
def parse_args():
parser = OptionParser()
parser.add_option(
"--max-words", dest='words', type=int, default=50000, metavar='N',
help="maximum number of words generated/loaded"
)
parser.add_option(
"--random", dest='random', action='store_true', default=False,
help="generate random words"
)
parser.add_option(
"--seed", dest='seed', type=int, default=0, metavar='INT',
help="random seed"
)
parser.add_option(
"--random-max-len", dest='maxlength', type=int, default=100, metavar='K',
help="maximum count of characters in a word"
)
parser.add_option(
"--file-gz", metavar='FILE',
help="load words from utf8-encoded gz file"
)
(options, rest) = parser.parse_args()
if not (options.file_gz or options.random):
raise parser.error("pass --random or --file-gz option")
return options
if __name__ == '__main__':
main()
|
