我的任务是在电子邮件中捕获行程的日期,但是给出的日期都是不同的格式,我想我需要帮助才能找出是否有任何方法可以捕获以下格式:
02 APR
APR 02
2 APR
APR 2
2nd APR
APR 2nd
2nd April
April 2nd
APR 12th
April 12th
12th April
April 13-16
13-16 April
APR 13-16
13-16 APR
April 13th-16th
13th-16th April
APR 13th-16th
13th-16th APR
我尝试了很多方法,但是因为我不能理解或理解 新手到正则表达式。
我能得到的最接近的是:
(\d*)-(\d*) APR|April \d*\d*
编辑 - 发现我错过了更多格式。
13-16 - 4月APR
4月13日至16日13/16 APR
我尝试过使用以下内容:
(Jan(?:uary)?|Feb(?:ruary)?|Mar(?:ch)?|Apr(?:il)?|May|Jun(?:e)?|Jul(?:y)?|Aug(?:ust)?|Sep(?:tember)?|Oct(?:ober)?|Nov(?:ember)?|Dec(?:ember)?)\ *\d+(?:[nr]d|th|st)?(?: * \d+(?:[nr]d|th|st)?)?|\d+(?:[nr]d|th|st)?(?: . \d+(?:[nr]d|th|st)?)?\ *(?:Jan(?:uary)?|Feb(?:ruary)?|Mar(?:ch)?|Apr(?:il)?|May|Jun(?:e)?|Jul(?:y)?|Aug(?:ust)?|Sep(?:tember)?|Oct(?:ober)?|Nov(?:ember)?|Dec(?:ember)?)
可以用空格或没有空格捕获日期。 有没有办法捕获所有格式,并将日期分为' - ','/','〜'和输出/写入一个标准化格式?
(Group 1 Date)-Month (Group 2 Date)-Month eg: 13-Apr 16-Apr
感谢您的善意建议和意见。
答案 0 :(得分:2)
您需要考虑可选值。以下是与您的示例输入相匹配的增强版本:
/(\d+)(?:st|[nr]d|th)?-?(\d*)(?:st|[nr]d|th)?\s*Apr(?:il)?|Apr(?:il)?\s*(\d+)(?:st|[nr]d|th)?-?(\d*)(?:st|[nr]d|th)?/i
请参阅regex demo(请注意,您需要使用不区分大小写的修饰符来匹配April
的任何变体)
基本上,有两个匹配April
和日期范围的替代方案:
(\d+)(?:st|[nr]d|th)?-?(\d*)(?:st|[nr]d|th)?\s*Apr(?:il)?
- 1+位数后跟可选的st
,nd
,rd
,th
,后跟可选的连字符,然后是0+数字,后跟可选的st
等,然后是0 +空格,然后是Apr
或April
(由于/i
修饰符而不区分大小写)|
- 或Apr(?:il)?\s*(\d+)(?:st|[nr]d|th)?-?(\d*)(?:st|[nr]d|th)?
- 与上述相同但已交换。答案 1 :(得分:1)
我想出了这个正则表达式:
(?:APR|April)\ *\d+(?:[nr]d|th|st)?(?:-\d+(?:[nr]d|th|st)?)?|\d+(?:[nr]d|th|st)?(?:-\d+(?:[nr]d|th|st)?)?\ *(?:APR|April)
请在此处查看详细信息:Regex101
也许它有点矫枉过正,但我想出了这个与任何月份相匹配的正则表达式:
(?:January|JAN|February|FEB|March|MAR|April|APR|May|MAY|June|JUN|July|JUL|August|AUG|September|SEP|October|OCT|November|NOV|December|DEC)\ *\d+(?:[nr]d|th|st)?(?:-\d+(?:[nr]d|th|st)?)?|\d+(?:[nr]d|th|st)?(?:-\d+(?:[nr]d|th|st)?)?\ *(?:January|JAN|February|FEB|March|MAR|April|APR|May|MAY|June|JUN|July|JUL|August|AUG|September|SEP|October|OCT|November|NOV|December|DEC)
不可读,如果您需要详细信息,请点击此处:Regex101
使用WiktorStribiżew的技巧改进版本:
(?:Jan(?:uary)?|Feb(?:ruary)?|Mar(?:ch)?|Apr(?:il)?|May|Jun(?:e)?|Jul(?:y)?|Aug(?:ust)?|Sep(?:tember)?|Oct(?:ober)?|Nov(?:ember)?|Dec(?:ember)?)\ *\d+(?:[nr]d|th|st)?(?:-\d+(?:[nr]d|th|st)?)?|\d+(?:[nr]d|th|st)?(?:-\d+(?:[nr]d|th|st)?)?\ *(?:Jan(?:uary)?|Feb(?:ruary)?|Mar(?:ch)?|Apr(?:il)?|May|Jun(?:e)?|Jul(?:y)?|Aug(?:ust)?|Sep(?:tember)?|Oct(?:ober)?|Nov(?:ember)?|Dec(?:ember)?)
详情请见Regex101
它匹配每个monthes,它使用更少的步骤(更有效)
但,您需要确保不区分大小写
答案 2 :(得分:0)
我想出了这个:
(\d+(?:th|st|[nr]d)?(?:-\d+(?:th|st|[nr]d)?)?\s*(?:APR|April))|((?:APR|April)\s*\d+(?:th|st|[nr]d)?(?:-\d+(?:th|st|[nr]d)?)?)