Question

Copyright © 2019 Apple Inc. All rights reserved.  
© 2019 Quid, Inc. All Rights Reserved.  
© 2009 Database Designs  
© 2019 Rediker Software, All Rights Reserved  
©2019 EVOSUS, INC. ALL RIGHTS RESERVED  
© 2019 Walmart. All Rights Reserved.  
© Copyright 2003-2019 Exxon Mobil Corporation. All Rights Reserved.  
Copyright © 1978-2019 Berkshire Hathaway Inc.  
© 2019 McKesson Corporation  
© 2019 UnitedHealth Group. All rights reserved.  
© Copyright 1999 - 2019 CVS Health  
Copyright 2019 General Motors. All Rights Reserved.  
© 2019 Ford Motor Company  
©2019 AT&T Intellectual Property. All rights reserved.  
© 2019 GENERAL ELECTRIC  
Copyright ©2019 AmerisourceBergen Corporation. All Rights Reserved.  
© 2019 Verizon  
© 2019 Fannie Mae  
Copyright © 2018 Jonas Construction Software Inc. All rights reserved.  
All Comments © Copyright 2017 Kroger | The Kroger Co. All Rights Reserved  
© 2019 Express Scripts Holding Company. All Rights Reserved. 1 Express Way, St. Louis, MO 63121  
© 2019 JPMorgan Chase & Co.  
Copyright © 1995 - 2018 Boeing. All Rights Reserved.  
© 2019 Bank of America Corporation. All rights reserved.  
© 1999 - 2019 Wells Fargo. All rights reserved. NMLSR ID 399801  
©2019 Cardinal Health. All rights reserved.

我所知道的正则表达式只是非常基本的内容，目前还不足以快速提出一个好的解决方案。

从我看来，至少对于这些示例而言，正确捕获公司名称的要求如下：

If there's a '©' or 'Copyright' in the sentence:
    After '©' or 'Copyright' - look for a year, e.g. '2019', or a year range, e.g. '1995 - 2018' or '2003-2019' (spaces are to catch as well]):
        If there's a dot somewhere after this year/year range, capture  the text until the dot. E.g. in 'Copyright © 1978-2019 Berkshire Hathaway Inc.' capture 'Berkshire Hathaway Inc'
        If there's no dot but there's the sentence 'All rights reserved', capture from the year/year range until there and also ignore any possible non-alphanumeric characters that precede it, such as spaces and commas. E.g. from '© 2019 Rediker Software, All Rights Reserved' capture 'Rediker Software'
        If there's no dot nor the sentence 'All rights reserved', capture from the year/year range until the end. E.g. from '© 2019 Verizon' Capture 'Verizon'

对此有什么好的正则表达式建议吗？

Answer 1

您可以考虑使用正则表达式，例如

(?i)(?:©(?:\s*Copyright)?|Copyright(?:\s*©)?)\s*\d+(?:\s*-\s*\d+)?\s*(.*?(?=\W*All\s+rights\s+reserved)|[^.]*(?=\.)|.*)

请参见regex demo。结合使用不区分大小写的修饰符re.I。

详细信息

(?:©(?:\s*Copyright)?|Copyright(?:\s*©)?)-
- ©(?:\s*Copyright)?-© char后跟一个可选的0+空格子串，然后是Copyright
- |-或
- Copyright(?:\s*©)?-Copyright后跟一个可选的0+空格和©字符的子字符串
\s*-超过0个空格
\d+-1个以上的数字（如果年份始终包含4个数字，请使用\d{4}）
(?:\s*-\s*\d+)?--的可选序列，先后包含0+个空格和1+个数字（如果年份始终包含4个数字，请使用\d{4}）
\s*-超过0个空格
(.*?(?=\W*All\s+rights\s+reserved)|[^.]*(?=\.)|.*)-捕获组1 ：以下任何一种选择：
- .*?(?=\W*All\s+rights\s+reserved)-除换行符以外的任何0+个字符，尽可能少，最多0个非单词字符，后跟All rights reserved字符串
- [^.]*(?=\.)-除.以外的任何0+个字符，最多不超过.，不包括.
- .*-该行的其余部分

Python demo：

import re
s = "Copyright © 2019 Apple Inc. All rights reserved.\r\n© 2019 Quid, Inc. All Rights Reserved.\r\n© 2009 Database Designs \r\n© 2019 Rediker Software, All Rights Reserved\r\n©2019 EVOSUS, INC. ALL RIGHTS RESERVED\r\n© 2019 Walmart. All Rights Reserved.\r\n© Copyright 2003-2019 Exxon Mobil Corporation. All Rights Reserved.\r\nCopyright © 1978-2019 Berkshire Hathaway Inc.\r\n© 2019 McKesson Corporation\r\n© 2019 UnitedHealth Group. All rights reserved.\r\n© Copyright 1999 - 2019 CVS Health\r\nCopyright 2019 General Motors. All Rights Reserved.\r\n© 2019 Ford Motor Company\r\n©2019 AT&T Intellectual Property. All rights reserved.\r\n© 2019 GENERAL ELECTRIC\r\nCopyright ©2019 AmerisourceBergen Corporation. All Rights Reserved.\r\n© 2019 Verizon\r\n© 2019 Fannie Mae\r\nCopyright © 2018 Jonas Construction Software Inc. All rights reserved.\r\nAll Comments © Copyright 2017 Kroger | The Kroger Co. All Rights Reserved\r\n© 2019 Express Scripts Holding Company. All Rights Reserved. 1 Express Way, St. Louis, MO 63121\r\n© 2019 JPMorgan Chase & Co.\r\nCopyright © 1995 - 2018 Boeing. All Rights Reserved.\r\n© 2019 Bank of America Corporation. All rights reserved.\r\n© 1999 - 2019 Wells Fargo. All rights reserved. NMLSR ID 399801\r\n©2019 Cardinal Health. All rights reserved.\r\n© 2019 Quid, Inc All Rights Reserved."
rx = r"(?:©(?:\s*Copyright)?|Copyright(?:\s*©)?)\s*\d+(?:\s*-\s*\d+)?\s*(.*?(?=\W*All\s+rights\s+reserved)|[^.\n]*(?=\.)|.*)"
for m in re.findall(rx, s, re.I):
    print(m)

输出：

Apple Inc
Quid, Inc
Database Designs 
Rediker Software
EVOSUS, INC
Walmart
Exxon Mobil Corporation
Berkshire Hathaway Inc
McKesson Corporation
UnitedHealth Group
CVS Health
General Motors
Ford Motor Company
AT&T Intellectual Property
GENERAL ELECTRIC
AmerisourceBergen Corporation
Verizon
Fannie Mae
Jonas Construction Software Inc
Kroger | The Kroger Co
Express Scripts Holding Company
JPMorgan Chase & Co
Boeing
Bank of America Corporation
Wells Fargo
Cardinal Health
Quid, Inc

正则表达式可在多种情况下匹配版权声明中的公司名称

1 个答案: