regex101: PARSE NUMBERS

^start of line

Group 1(((\d{0,16})\.\d{1,16})|([0-9]{1})|([1-9]{1}\d{0,15})|[1-9]{1,3}(,\d{3}){1,}|(([1-9]{0,3},(\d{1,3}))*(\.\d{1,16}))|([1-9]{1,3},\d{3}))

1st Alternative((\d{0,16})\.\d{1,16})

Group 2((\d{0,16})\.\d{1,16})

Group 3(\d{0,16})

\d{0,16}a digit, repeated between 0 and 16 times

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

\d{1,16}a digit, repeated between 1 and 16 times

2nd Alternative([0-9]{1})

Group 4([0-9]{1})

Character Class[0-9]{1}

{1}matches one character from the set below:

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

3rd Alternative([1-9]{1}\d{0,15})

Group 5([1-9]{1}\d{0,15})

Character Class[1-9]{1}

{1}matches one character from the set below:

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

\d{0,15}a digit, repeated between 0 and 15 times

4th Alternative[1-9]{1,3}(,\d{3}){1,}

Character Class[1-9]{1,3}

{1,3}matches between 1 and 3 characters from the set below:

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

Group 6(,\d{3}){1,}

{1,}repeats the group contents below at least once:

,the literal , (44₁₀ / 54₈ / 2C₁₆)

\d{3}a digit, repeated exactly 3 times

5th Alternative(([1-9]{0,3},(\d{1,3}))*(\.\d{1,16}))

Group 7(([1-9]{0,3},(\d{1,3}))*(\.\d{1,16}))

Group 8([1-9]{0,3},(\d{1,3}))*

*repeats the group contents below any number of times:

Character Class[1-9]{0,3}

{0,3}matches between 0 and 3 characters from the set below:

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

,the literal , (44₁₀ / 54₈ / 2C₁₆)

Group 9(\d{1,3})

\d{1,3}a digit, repeated between 1 and 3 times

Group 10(\.\d{1,16})

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

\d{1,16}a digit, repeated between 1 and 16 times

6th Alternative([1-9]{1,3},\d{3})

Group 11([1-9]{1,3},\d{3})

Character Class[1-9]{1,3}

{1,3}matches between 1 and 3 characters from the set below:

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

,the literal , (44₁₀ / 54₈ / 2C₁₆)

\d{3}a digit, repeated exactly 3 times

$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

Search reference

Regular Expression

^(((\d{0,16})\.\d{1,16})|([0-9]{1})|([1-9]{1}\d{0,15})|[1-9]{1,3}(,\d{3}){1,}|(([1-9]{0,3},(\d{1,3}))*(\.\d{1,16}))|([1-9]{1,3},\d{3}))$

Unit Tests

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