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