help on regexp to extract words between ""

Question

raym 2019-9-24

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/481887-help-on-regexp-to-extract-words-between

回答： the cyclist 2019-9-24

aMajorLine = 'var _0x3f86=["\x72\x65\x64","\x67\x72\x65\x65\x6E","\x62\x6C\x75\x65"]';
[a,b] = regexp(aMajorLine,'var _0x3f86=\[\"([\w\\]+)\",?]+\]','tokens')

I want to extract the words inside "". The results is empty. Is there something wrong?

0 个评论
显示 -2更早的评论隐藏 -2更早的评论

请先登录，再进行评论。

请先登录，再回答此问题。

Answer 1

the cyclist 2019-9-24

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/481887-help-on-regexp-to-extract-words-between#answer_393293

在 MATLAB Online 中打开

I find it difficult to debug someone else's regexp. :-(

Before seeing @Ruger28's elegant solution, I would have done

matches = regexp(aMajorLine,'"[\w*,\\]*"','match')
matches = regexprep(matches,'"','');

Note that I first pull out with the double-quote characters, then strip them out in the second line. It is possible to do this in one regexp step instead, using "lookaround" assertions, but I find that less easy to understand.

0 个评论
显示 -2更早的评论隐藏 -2更早的评论

请先登录，再进行评论。

Answer 2

Ruger28 2019-9-24

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/481887-help-on-regexp-to-extract-words-between#answer_393291

在 MATLAB Online 中打开

if using R2016b or later

aMajorLine = 'var _0x3f86=["\x72\x65\x64","\x67\x72\x65\x65\x6E","\x62\x6C\x75\x65"]';
extractedText = extractBetween(aMajorLine,'"','"');

which gives:

extractedText =
  3×1 cell array
    {'\x72\x65\x64'        }
    {'\x67\x72\x65\x65\x6E'}
    {'\x62\x6C\x75\x65'    }

3 个评论
显示 1更早的评论隐藏 1更早的评论

Ruger28 2019-9-24

It is pretty amazing! There is also extractBefore and extractAfter, and they are imensly useful when convoluted regexp's are normally needed. Only thing is that they are 2016 or later.

raym 2019-9-24