clean

</>

pub fn clean(cnpj: String) -> String

Removes every character that is not a digit (0-9).

clean_alphanumeric

</>

pub fn clean_alphanumeric(cnpj: String) -> String

Uppercases the input and removes every character that is not A-Z or 0-9.

</>

pub fn clean_auto(cnpj: String) -> String

Cleans a CNPJ string, automatically detecting and preserving the appropriate format.

For alphanumeric CNPJs, preserves letters and numbers (A-Z, 0-9) and converts to uppercase. For numeric CNPJs, preserves only numbers (0-9).

clean_auto("12.ABC.345/01DE-35")  // "12ABC34501DE35"
clean_auto("84.980.771/0001-82")  // "84980771000182"

</>

pub fn format_auto(cnpj: String) -> String

Formats a cleaned 14-character CNPJ as “XX.XXX.XXX/XXXX-XX”.

The grouping is identical for numeric and alphanumeric CNPJs, so a single formatter handles both formats.

format_auto("12ABC34501DE35")  // "12.ABC.345/01DE-35"
format_auto("84980771000182")  // "84.980.771/0001-82"

</>

pub fn has_letters(str: String) -> Bool