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import os
from pathlib import Path
import json
import time
class Storage:
storage_path = ''
def __init__(self):
pass
def __get_storage_path(self):
self.storage_path = os.path.dirname(os.path.abspath(__file__)) + '/../../storage'
self.storage_path = os.path.normpath(self.storage_path)
if not os.path.exists(self.storage_path):
os.makedirs(self.storage_path)
# old_storage_path = os.path.join(Path().absolute(), 'physton-prompt')
# if os.path.exists(old_storage_path):
# # 复制就的存储文件到新的存储文件夹
# for file in os.listdir(old_storage_path):
# old_file_path = os.path.join(old_storage_path, file)
# new_file_path = os.path.join(self.storage_path, file)
# if not os.path.exists(new_file_path):
# os.rename(old_file_path, new_file_path)
# # 删除旧的存储文件夹
# os.rmdir(old_storage_path)
return self.storage_path
def __get_data_filename(self, key):
return self.__get_storage_path() + '/' + key + '.json'
def __get_key_lock_filename(self, key):
return self.__get_storage_path() + '/' + key + '.lock'
def __lock(self, key):
file_path = self.__get_key_lock_filename(key)
with open(file_path, 'w') as f:
f.write('1')
def __unlock(self, key):
file_path = self.__get_key_lock_filename(key)
if os.path.exists(file_path):
os.remove(file_path)
def __is_locked(self, key):
file_path = self.__get_key_lock_filename(key)
return os.path.exists(file_path)
def __get(self, key):
filename = self.__get_data_filename(key)
if not os.path.exists(filename):
return None
if os.path.getsize(filename) == 0:
return None
try:
import launch
if not launch.is_installed("chardet"):
with open(filename, 'r') as f:
data = json.load(f)
else:
import chardet
with open(filename, 'rb') as f:
data = f.read()
encoding = chardet.detect(data).get('encoding')
data = json.loads(data.decode(encoding))
except Exception as e:
try:
with open(filename, 'r') as f:
data = json.load(f)
except Exception as e:
print(e)
return None
return data
def __set(self, key, data):
file_path = self.__get_data_filename(key)
with open(file_path, 'w') as f:
json.dump(data, f, indent=4, ensure_ascii=True)
def set(self, key, data):
while self.__is_locked(key):
time.sleep(0.01)
self.__lock(key)
try:
self.__set(key, data)
self.__unlock(key)
except Exception as e:
self.__unlock(key)
raise e
def get(self, key):
return self.__get(key)
def delete(self, key):
file_path = self.__get_data_filename(key)
if os.path.exists(file_path):
os.remove(file_path)
def __get_list(self, key):
data = self.get(key)
if not data:
data = []
return data
# 向列表中添加元素
def list_push(self, key, item):
while self.__is_locked(key):
time.sleep(0.01)
self.__lock(key)
try:
data = self.__get_list(key)
data.append(item)
self.__set(key, data)
self.__unlock(key)
except Exception as e:
self.__unlock(key)
raise e
# 从列表中删除和返回最后一个元素
def list_pop(self, key):
while self.__is_locked(key):
time.sleep(0.01)
self.__lock(key)
try:
data = self.__get_list(key)
item = data.pop()
self.__set(key, data)
self.__unlock(key)
return item
except Exception as e:
self.__unlock(key)
raise e
# 从列表中删除和返回第一个元素
def list_shift(self, key):
while self.__is_locked(key):
time.sleep(0.01)
self.__lock(key)
try:
data = self.__get_list(key)
item = data.pop(0)
self.__set(key, data)
self.__unlock(key)
return item
except Exception as e:
self.__unlock(key)
raise e
# 从列表中删除指定元素
def list_remove(self, key, index):
while self.__is_locked(key):
time.sleep(0.01)
self.__lock(key)
data = self.__get_list(key)
data.pop(index)
self.__set(key, data)
self.__unlock(key)
# 获取列表中指定位置的元素
def list_get(self, key, index):
data = self.__get_list(key)
return data[index]
# 清空列表中的所有元素
def list_clear(self, key):
while self.__is_locked(key):
time.sleep(0.01)
self.__lock(key)
try:
self.__set(key, [])
self.__unlock(key)
except Exception as e:
self.__unlock(key)
raise e
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