CODEWITHSUNDEEP
phpregex
benmarks
benmarks

Reputation: 23205

Regex matching for counting CSS selectors

I'm attempting (and failing) to specify a single regex which I can use with PHP's preg_match_all() for the following:

.foo { bar }
.baz, .bot { bip, bop }

I need to count all { and only , which are not between {}. Given the sample above, I should have exactly three matches. My difficulty (ignorance) is that I do not understand how to specify the "do not match commas between curly braces" part. My current regex matches all commas and opening curly braces:

({)*(,)*

Upvotes: 2

Views: 729

Answers (2)

mikeytown2
mikeytown2

Reputation: 1764

If you want a close but not exact count this is a quick and dirty way to do so

$selector_count = substr_count($css, ',') + substr_count($css, '{') - substr_count($css, '@media');

It will count any , in the css, so rules like rgba(0, 0, 0, 0.5) that use , will be counted as well. This can be useful if you know about the limitations. The accepted solution doesn't work with @media.

Upvotes: 1

Buh Buh
Buh Buh

Reputation: 7546

Try this:

\{.+?\}|,

Meaning:

\{   # If you can match a brace
.+?  # then also grab the minimum amount of other charactors
\}   # until you reach the closing brace
|,   # or if there was no brace then just match a comma

Upvotes: 2

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