Reputation: 55

Better regex match?

I want a regex to match an enumeration of versions separated by semicolons. Also there may not be mentioned a version.

Examples of input:

12.1.01;;;1.3.400;12-3;5;;;;;;4,5
12.5
;;;13,7;;15-12.300

At least one version should be mentioned between semicolons. Number of versions can be any.

Currently this regex seems to do what I want:

regex="^\;*([0-9]+([\.\,\-]{1}[0-9]+)*)+(\;|([0-9]+([\.\,\-]{1}[0-9]+)*))*$"

Answers (3)

Reputation: 744

This pattern matches a line if it is valid

/^(;*((\d+)\.)*?(\d+);*)*$/

This pattern matches everything not ;

/[^;]+/g

This pattern matches a version:

/(\d+\.)*\d+/

Upvotes: 0

Reputation: 490

If you are looking for anything inside the semicolons, the regex

([^;]+)

should do the trick. It will match as long sequences as possible of symbols that aren't ;

The regex:

([^;\n\r]+)

will also separate version names that are on different rows without any semicolons between them.

Upvotes: 2

Reputation: 199

I would use a for to iterate over the versions, something like this:

IFS=';'
for x in string
do
    version = $x
done

Just like a manual split of classic programming languages.

Upvotes: -1