67 lines
2.4 KiB
Python
67 lines
2.4 KiB
Python
# Copyright (c) 2020 PaddlePaddle Authors. All Rights Reserve.
|
|
#
|
|
# Licensed under the Apache License, Version 2.0 (the "License");
|
|
# you may not use this file except in compliance with the License.
|
|
# You may obtain a copy of the License at
|
|
#
|
|
# http://www.apache.org/licenses/LICENSE-2.0
|
|
#
|
|
# Unless required by applicable law or agreed to in writing, software
|
|
# distributed under the License is distributed on an "AS IS" BASIS,
|
|
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
# See the License for the specific language governing permissions and
|
|
# limitations under the License.
|
|
import random
|
|
|
|
from utils.logging import get_logger
|
|
|
|
|
|
class FileCorpus(object):
|
|
def __init__(self, config):
|
|
self.logger = get_logger()
|
|
self.logger.info("using FileCorpus")
|
|
|
|
self.char_list = " 0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz"
|
|
|
|
corpus_file = config["CorpusGenerator"]["corpus_file"]
|
|
self.language = config["CorpusGenerator"]["language"]
|
|
with open(corpus_file, 'r') as f:
|
|
corpus_raw = f.read()
|
|
self.corpus_list = corpus_raw.split("\n")[:-1]
|
|
assert len(self.corpus_list) > 0
|
|
random.shuffle(self.corpus_list)
|
|
self.index = 0
|
|
|
|
def generate(self, corpus_length=0):
|
|
if self.index >= len(self.corpus_list):
|
|
self.index = 0
|
|
random.shuffle(self.corpus_list)
|
|
corpus = self.corpus_list[self.index]
|
|
if corpus_length != 0:
|
|
corpus = corpus[0:corpus_length]
|
|
if corpus_length > len(corpus):
|
|
self.logger.warning("generated corpus is shorter than expected.")
|
|
self.index += 1
|
|
return self.language, corpus
|
|
|
|
|
|
class EnNumCorpus(object):
|
|
def __init__(self, config):
|
|
self.logger = get_logger()
|
|
self.logger.info("using NumberCorpus")
|
|
self.num_list = "0123456789"
|
|
self.en_char_list = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz"
|
|
self.height = config["Global"]["image_height"]
|
|
self.max_width = config["Global"]["image_width"]
|
|
|
|
def generate(self, corpus_length=0):
|
|
corpus = ""
|
|
if corpus_length == 0:
|
|
corpus_length = random.randint(5, 15)
|
|
for i in range(corpus_length):
|
|
if random.random() < 0.2:
|
|
corpus += "{}".format(random.choice(self.en_char_list))
|
|
else:
|
|
corpus += "{}".format(random.choice(self.num_list))
|
|
return "en", corpus
|