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80 lines
3.3 KiB
Python
80 lines
3.3 KiB
Python
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#!/usr/bin/python3
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# -*- coding: utf-8 -*-
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#
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# module CFileContainer
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#
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# Copyright (C) 2019 AleaJactaEst
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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import logging
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import os
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from tools import CFileList
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class CFileContainer():
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def __init__(self):
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self.log = logging.getLogger('myLogger')
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self.list = []
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def addSearchPath(self, path):
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if not path:
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return
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self.log.debug("read path:" + str(path))
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onlyfiles = [f for f in os.listdir(path) if os.path.isfile(os.path.join(path, f))]
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self.log.debug("read files:" + ','.join(onlyfiles))
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for filename in onlyfiles:
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extension = os.path.splitext(filename)[1]
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if extension == '.bnp':
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# Container for multi file
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fullpath = os.path.join(path, filename)
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size = os.path.getsize(fullpath)
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data = CFileList.CFileList(filename, fullpath)
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with open(fullpath, 'rb') as fp:
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fp.seek(size-4)
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nOffsetFromBeginning = int.from_bytes(fp.read(4), byteorder='little', signed=False)
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self.log.debug("[%s] nOffsetFromBeginning:%u" % (filename, nOffsetFromBeginning))
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fp.seek(nOffsetFromBeginning)
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nNbFile = int.from_bytes(fp.read(4), byteorder='little', signed=False)
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self.log.debug("[%s] nNbFile:%u" % (filename, nNbFile))
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for i in range(0, nNbFile):
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nStringSize = int.from_bytes(fp.read(1), byteorder='little', signed=False)
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FileName = fp.read(nStringSize).decode()
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nFileSize2 = int.from_bytes(fp.read(4), byteorder='little', signed=False)
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nFilePos = int.from_bytes(fp.read(4), byteorder='little', signed=False)
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self.log.debug("[%s] (%d) sizestring:%d file:%s size2:%d pos:%d" % (filename, i, nStringSize, FileName, nFileSize2, nFilePos))
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data.addchild(FileName, nFilePos, nFileSize2)
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fp.close()
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self.list.append(data)
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def search(self, name):
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for x in self.list:
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for y in x.child:
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if y.name == name:
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self.log.debug("file:%s child:%s pos:%d size:%d", x.name, y.name, y.pos, y.size)
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return x.fullpath, y.pos, y.size
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self.log.debug('-'*80)
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return None, None, None
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def getdata(self, name):
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fullpath, pos, size = self.search(name)
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self.log.debug("file:%s pos:%d size:%d", fullpath, pos, size)
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data = None
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with open(fullpath, 'rb') as fp:
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fp.seek(pos)
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data = fp.read(size)
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fp.close()
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return data
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