What is a correct regex for matching semantic versioning?
It should not match for instance
01.1.1
9.8.7-whatever meta meta
1.2.3.DEV
1.2.3-0123
1.0.0-alpha_beta
1.2-SNAPSHOT
1.2.31.2.3----RC-SNAPSHOT.12.09.1--..12 788
it should match for instance
0.0.4
1.2.3
10.20.30
1.1.2-prerelease meta
1.1.2 meta
1.0.0-alpha
1.0.0-alpha.beta
1.0.0-alpha.1
1.0.0-alpha.0valid
1.0.0-rc.1 build.1
1.2.3-beta
10.2.3-DEV-SNAPSHOT
1.2.3-SNAPSHOT-123
1.0.0
2.0.0 build.1848
2.0.1-alpha.1227
1.0.0-alpha beta
1.2.3----RC-SNAPSHOT.12.9.1--.12 788
1.2.3----R-S.12.9.1--.12 meta
CodePudding user response：
Take a look on the bottom of the SemVer page:
Is there a suggested regular expression (RegEx) to check a SemVer string?
^(0|[1-9]\d*)\.(0|[1-9]\d*)\.(0|[1-9]\d*)(?:-((?:0|[1-9]\d*|\d*[a-zA-Z-][0-9a-zA-Z-]*)(?:\.(?:0|[1-9]\d*|\d*[a-zA-Z-][0-9a-zA-Z-]*))*))?(?:\ ([0-9a-zA-Z-] (?:\.[0-9a-zA-Z-] )*))?$
CodePudding user response：
A working regex would be
^(0|[1-9] [0-9]*)\.(0|[1-9] [0-9]*)\.(0|[1-9] [0-9]*)(-(0|[1-9A-Za-z-][0-9A-Za-z-]*)(\.[0-9A-Za-z-] )*)?(\ [0-9A-Za-z-] (\.[0-9A-Za-z-] )*)?$
Working against every flavor available at regex101.com
This is a somewhat simpler version missing the capture groups from the »official« ones if you don’t need those and want to keep it simple.