53 lines
1.8 KiB
Python
53 lines
1.8 KiB
Python
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import olefile, struct, sys
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def extract_doc_text(filepath):
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ole = olefile.OleFileIO(filepath)
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word = ole.openstream('WordDocument').read()
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flags = struct.unpack('<H', word[0x0A:0x0C])[0]
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table_name = '1Table' if (flags & 0x0200) else '0Table'
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fcClx = struct.unpack('<I', word[0x01A2:0x01A6])[0]
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lcbClx = struct.unpack('<I', word[0x01A6:0x01AA])[0]
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table = ole.openstream(table_name).read()
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clx = table[fcClx:fcClx+lcbClx]
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pos = 0
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plc_pcd = None
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while pos < len(clx):
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clxt = clx[pos]
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if clxt == 1:
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cb = struct.unpack('<H', clx[pos+1:pos+3])[0]
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pos += 3 + cb
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elif clxt == 2:
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lcb = struct.unpack('<I', clx[pos+1:pos+5])[0]
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plc_pcd = clx[pos+5:pos+5+lcb]
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break
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else:
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break
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if plc_pcd is None:
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return "NO_PCDT"
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n = (len(plc_pcd) - 4) // 12
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cps = [struct.unpack('<I', plc_pcd[i*4:i*4+4])[0] for i in range(n+1)]
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out = []
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for i in range(n):
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cnt = cps[i+1] - cps[i]
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pcd = plc_pcd[4 + i*12: 4 + i*12 + 12]
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fc = struct.unpack('<I', pcd[0:4])[0]
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compressed = (fc & 0x40000000) != 0
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fcoff = fc & 0x3FFFFFFF
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if compressed:
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raw = word[fcoff:fcoff+cnt]
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txt = raw.decode('gb18030', errors='replace')
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else:
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raw = word[fcoff:fcoff+cnt*2]
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txt = raw.decode('utf-16-le', errors='replace')
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out.append(txt)
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return "".join(out)
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if __name__ == '__main__':
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import io
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for p in sys.argv[1:]:
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t = extract_doc_text(p)
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sys.stdout.buffer.write(("="*60 + "\n").encode('utf-8'))
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sys.stdout.buffer.write(("FILE: " + p + "\n").encode('utf-8'))
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sys.stdout.buffer.write(t.encode('utf-8'))
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sys.stdout.buffer.write(("\n" + "="*60 + "\n").encode('utf-8'))
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