regex101: Semantic Versioning 2.0.0

Pro

^start of line

Group major(?<major>0|[1-9]\d*)

1st Alternative0

0the literal 0 (48₁₀ / 60₈ / 30₁₆)

2nd Alternative[1-9]\d*

Character Class[1-9]

1-9one character from 1 (49₁₀) to 9 (57₁₀)

\d*a digit, repeated any number of times

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

Group minor(?<minor>0|[1-9]\d*)

1st Alternative0

0the literal 0 (48₁₀ / 60₈ / 30₁₆)

2nd Alternative[1-9]\d*

Character Class[1-9]

1-9one character from 1 (49₁₀) to 9 (57₁₀)

\d*a digit, repeated any number of times

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

Group patch(?<patch>0|[1-9]\d*)

1st Alternative0

0the literal 0 (48₁₀ / 60₈ / 30₁₆)

2nd Alternative[1-9]\d*

Character Class[1-9]

1-9one character from 1 (49₁₀) to 9 (57₁₀)

\d*a digit, repeated any number of times

Non-Capturing Group(?:-(?<preRelease>(?:[a-zA-Z1-9][a-zA-Z\d]*|0\d*[a-zA-Z][a-zA-Z\d]*|0)(?:\.(?:[a-zA-Z1-9][a-zA-Z\d]*|0\d*[a-zA-Z][a-zA-Z\d]*|0))*))?

?repeats the group contents below at most once:

-the literal - (45₁₀ / 55₈ / 2D₁₆)

Group preRelease(?<preRelease>(?:[a-zA-Z1-9][a-zA-Z\d]*|0\d*[a-zA-Z][a-zA-Z\d]*|0)(?:\.(?:[a-zA-Z1-9][a-zA-Z\d]*|0\d*[a-zA-Z][a-zA-Z\d]*|0))*)

Non-Capturing Group(?:[a-zA-Z1-9][a-zA-Z\d]*|0\d*[a-zA-Z][a-zA-Z\d]*|0)

1st Alternative[a-zA-Z1-9][a-zA-Z\d]*

Character Class[a-zA-Z1-9]

a-zone character from a (97₁₀) to z (122₁₀) (case sensitive)

A-Zone character from A (65₁₀) to Z (90₁₀) (case sensitive)

1-9one character from 1 (49₁₀) to 9 (57₁₀)

Character Class[a-zA-Z\d]*

*matches any number of characters from the set below:

a-zone character from a (97₁₀) to z (122₁₀) (case sensitive)

A-Zone character from A (65₁₀) to Z (90₁₀) (case sensitive)

\da digit

2nd Alternative0\d*[a-zA-Z][a-zA-Z\d]*

0the literal 0 (48₁₀ / 60₈ / 30₁₆)

\d*a digit, repeated any number of times

Character Class[a-zA-Z]

a-zone character from a (97₁₀) to z (122₁₀) (case sensitive)

A-Zone character from A (65₁₀) to Z (90₁₀) (case sensitive)

Character Class[a-zA-Z\d]*

*matches any number of characters from the set below:

a-zone character from a (97₁₀) to z (122₁₀) (case sensitive)

A-Zone character from A (65₁₀) to Z (90₁₀) (case sensitive)

\da digit

3rd Alternative0

0the literal 0 (48₁₀ / 60₈ / 30₁₆)

Non-Capturing Group(?:\.(?:[a-zA-Z1-9][a-zA-Z\d]*|0\d*[a-zA-Z][a-zA-Z\d]*|0))*

*repeats the group contents below any number of times:

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

Non-Capturing Group(?:[a-zA-Z1-9][a-zA-Z\d]*|0\d*[a-zA-Z][a-zA-Z\d]*|0)

1st Alternative[a-zA-Z1-9][a-zA-Z\d]*

Character Class[a-zA-Z1-9]

Character Class[a-zA-Z\d]*

2nd Alternative0\d*[a-zA-Z][a-zA-Z\d]*

3rd Alternative0

Non-Capturing Group(?:\+(?<metadata>(?:[a-zA-Z\d-]*)(?:\.(?:[a-zA-Z\d-]*))*))?

$end of line

Global pattern flags

g modifier: global. Finds all matches instead of stopping after the first

m modifier: multiline. Causes ^ and $ to match the start and end of each line, not only the start and end of the string

25 tokens

Regular Expression

^(?<major>0|[1-9]\d*)\.(?<minor>0|[1-9]\d*)\.(?<patch>0|[1-9]\d*)(?:-(?<preRelease>(?:[a-zA-Z1-9][a-zA-Z\d]*|0\d*[a-zA-Z][a-zA-Z\d]*|0)(?:\.(?:[a-zA-Z1-9][a-zA-Z\d]*|0\d*[a-zA-Z][a-zA-Z\d]*|0))*))?(?:\+(?<metadata>(?:[a-zA-Z\d-]*)(?:\.(?:[a-zA-Z\d-]*))*))?$

Unit Tests

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