I want to extract a sentence from a web string. I can get what I want by using <span class="description">(.*?)</span> for picture1. It is ok. But web string which you can see in picture 2, "<span class="description">(.*?)</span>" doesn't work to extract text. since "</span>" on a different line. I have tried "([?\s\S]*?) instead of (.*?), still it didint work. Plaease help me. Thanks in advaced.
I need your help to extract a sentence from a web string
- Thread starter haydar
- Start date
tanutanu
Well-known member
Try ([\s\S]+?) or ((\s|\S)+?) with group1 option instead.
([\s\S]+?) is worked! Thank you so much! Is there any quide where I can find how these commands works; \s, \S, +?, *? etc.?
tanutanu
Well-known member
Sounds good
\s matches white space, tab or CRLF/CR/LF(same as \r) .
\S is any characters excluding the above.
So, \s\S means any characters, while "." excludes \r.
Your first trial includes extra "?" in the [] class definition. Inside the brackets, it means just a "?", not means any single character(same as \? outside []). So the expression didn't match when the string didn't contain "?" character.
+ means at least 1 character(s) after a character continuously, while * includes zero length case.
The last "?" of ".*?" or ".+?" indicates matching as short as possible. It is useful when the string is expected a character follows twice or more after the expression. "<" will appear so many times. So if not added the last "?" like ".*" or ".+", the expression expand until just 1 character prior to the last "<" of the string.
Last edited:
Thanks! I really loved macrodroid! It saves lots of money. I can do auto posting to my Telegram channels almost from any web page for free I have already purchased macrodroid pro.
I have already purchased macrodroid pro.Sounds good
\s matches white space, tab or CRLF/CR/LF(same as \r) .
\S is any characters excluding the above.
So, \s\S means any characters, while "." excludes \r.
Your first trial includes extra ? in the [] class definition. Inside the brackets, it means just a ?, not means any single character(same as \? outside []). So the expression didn't match when the string didn't contain ? character.
+ means at least 1 character(s) after a character continuously, while * includes zero case.
The last ? of .*? or .+? indicates marching as short as possible. It is useful when the string is expected a character follows twice or more after the exprThanks!
tanutanu
Well-known member
Exactly. It's definitely helpfulThanks! I really loved macrodroid! It saves lots of money. I can do auto posting to my Telegram channels almost from any web page for free
You make a bunch of your own macros without any limitations
Snurre
Well-known member
This might help a little
Regular Expressions Cheat Sheet
A quick reference guide for regular expressions (regex), including symbols, ranges, grouping, assertions and some sample patterns to get you started.
cheatography.com
tanutanu
Well-known member
Thanks, I really don't know good online manual written in EnglishThis might help a little
Regular Expressions Cheat Sheet
A quick reference guide for regular expressions (regex), including symbols, ranges, grouping, assertions and some sample patterns to get you started.
I learned reading a translated paper book when I was young
詳説 正規表現 第3版
「正規表現がこれだけ多種多様な言語やアプリケーションに取り入れられているのは、立派な理由があるからだ。正規表現は非常に強力なのだ。（中略）正規表現を使えば、データを自由に操れるようになる。データをコントロールし、自分のための仕事をさせられるのである。正規表現をマスターすることは、自分のデータを支配することなのだ。」（本書「はじめに」より）...
Mastering Regular Expressions, 3rd Edition
Regular expressions are an extremely powerful tool for manipulating text and data. They are now standard features in a wide range of languages and popular tools, including Perl, Python, Ruby, … - Selection from Mastering Regular Expressions, 3rd Edition [Book]
This is what I need. Thanks.This might help a little
Regular Expressions Cheat Sheet
A quick reference guide for regular expressions (regex), including symbols, ranges, grouping, assertions and some sample patterns to get you started.