Regular Expressions 101

Pro

^start of line

Non-Capturing Group(?:(?<timestamp>[^|]+)\|(?<severity>[^|]+)\|(?<x>[^|]+)\|(?<y>[^|]+)\|(?<a>[^|]+)\|(?<b>[^|]+)\|(?<c>[^|]+)(?:\|(?<d>[^|]+))?)

Group timestamp(?<timestamp>[^|]+)

Negated Character Class[^|]+

+matches at least one character outside the set below:

|the literal | (124₁₀ / 174₈ / 7C₁₆)

\|the literal | (124₁₀ / 174₈ / 7C₁₆)

Group severity(?<severity>[^|]+)

Negated Character Class[^|]+

+matches at least one character outside the set below:

|the literal | (124₁₀ / 174₈ / 7C₁₆)

\|the literal | (124₁₀ / 174₈ / 7C₁₆)

Group x(?<x>[^|]+)

Negated Character Class[^|]+

+matches at least one character outside the set below:

|the literal | (124₁₀ / 174₈ / 7C₁₆)

\|the literal | (124₁₀ / 174₈ / 7C₁₆)

Group y(?<y>[^|]+)

Negated Character Class[^|]+

+matches at least one character outside the set below:

|the literal | (124₁₀ / 174₈ / 7C₁₆)

\|the literal | (124₁₀ / 174₈ / 7C₁₆)

Group a(?<a>[^|]+)

Negated Character Class[^|]+

+matches at least one character outside the set below:

|the literal | (124₁₀ / 174₈ / 7C₁₆)

\|the literal | (124₁₀ / 174₈ / 7C₁₆)

Group b(?<b>[^|]+)

Negated Character Class[^|]+

+matches at least one character outside the set below:

|the literal | (124₁₀ / 174₈ / 7C₁₆)

\|the literal | (124₁₀ / 174₈ / 7C₁₆)

Group c(?<c>[^|]+)

Negated Character Class[^|]+

+matches at least one character outside the set below:

|the literal | (124₁₀ / 174₈ / 7C₁₆)

Non-Capturing Group(?:\|(?<d>[^|]+))?

?repeats the group contents below at most once:

\|the literal | (124₁₀ / 174₈ / 7C₁₆)

Group d(?<d>[^|]+)

Negated Character Class[^|]+

+matches at least one character outside the set below:

|the literal | (124₁₀ / 174₈ / 7C₁₆)

$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

No unit tests · Add a test to get started

25 tokens

Regular Expression

^(?:(?<timestamp>[^|]+)\|(?<severity>[^|]+)\|(?<x>[^|]+)\|(?<y>[^|]+)\|(?<a>[^|]+)\|(?<b>[^|]+)\|(?<c>[^|]+)(?:\|(?<d>[^|]+))?)$

Unit Tests

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