Question

This is probably a rather simple question to solve, butI’m trying to use a Regex on a string and have it remove any src attributes that contain dimensions, like this:

src="/some/path/here_000x000.jpg"

so

<img src="/some/path/here_000x000.jpg"/>

would become

<img />

after processing.

From researching I found that

\d{1,5}x\d{1,5}

finds dimensions, and

src\s*=\s*"(.+?)" 

will find a src attribute, but how can I combine these both and have some simple c# code whereby all matching patterns in a given string are removed (ie. replaced with ”)?

Many thanks

Answer 1

src\s*=\s*"[^"]*?\d+x\d+.*?"

Technically, you shouldn’t limit the digits to five (even though there shouldn’t be a need for such).

This matches src (1), any number of spaces (2), = (3), any number of spaces (2), " (4), any number of any characters (except ") (non-greedily) (5), any positive number of digits (6), x (7), any positive number of digits (6), any number of any characters (except newline) (non-greedily) (8), and "(3).

1. src
2. \s*
3. =
4. "
5. [^"]*?
6. \d+
7. x
8. .*?