Regular Expressions 101

Pro

Group mozilla_version(?P<mozilla_version>Mozilla\/[0-9\.]+)

Mozillathe literal text Mozilla (case sensitive)

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

Character Class[0-9\.]+

+matches at least one character from the set below:

0-9one character from 0 (48₁₀) to 9 (57₁₀)

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

the literal (32₁₀ / 40₈ / 20₁₆)

\(the literal ( (40₁₀ / 50₈ / 28₁₆)

Group sysInfo(?P<sysInfo>[^)]+)

Negated Character Class[^)]+

+matches at least one character outside the set below:

)the literal ) (41₁₀ / 51₈ / 29₁₆)

\)the literal ) (41₁₀ / 51₈ / 29₁₆)

Non-Capturing Group(?: (?P<platform>[^ ]+))?

?repeats the group contents below at most once:

the literal (32₁₀ / 40₈ / 20₁₆)

Group platform(?P<platform>[^ ]+)

Negated Character Class[^ ]+

+matches at least one character outside the set below:

the literal (32₁₀ / 40₈ / 20₁₆)

Non-Capturing Group(?: $(?P<platformInfo>[^)]+)$)?

?repeats the group contents below at most once:

the literal (32₁₀ / 40₈ / 20₁₆)

\(the literal ( (40₁₀ / 50₈ / 28₁₆)

Group platformInfo(?P<platformInfo>[^)]+)

Negated Character Class[^)]+

+matches at least one character outside the set below:

)the literal ) (41₁₀ / 51₈ / 29₁₆)

\)the literal ) (41₁₀ / 51₈ / 29₁₆)

Non-Capturing Group(?: (?P<extentions>[^\n]+))?

?repeats the group contents below at most once:

the literal (32₁₀ / 40₈ / 20₁₆)

Group extentions(?P<extentions>[^\n]+)

Negated Character Class[^\n]+

+matches at least one character outside the set below:

\na line-feed (newline) character (ASCII 10)

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

No unit tests · Add a test to get started

25 tokens

(?P<mozilla_version>Mozilla\/[0-9\.]+) \((?P<sysInfo>[^)]+)\)(?: (?P<platform>[^ ]+))?(?: \((?P<platformInfo>[^)]+)\))?(?: (?P<extentions>[^\n]+))?

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