parse_overpunched

ssapy.io.parse_overpunched(line)

Parse and adjust a string containing overpunched numeric values.

This function processes a given string to handle overpunched numeric values, which are a legacy encoding method for representing negative numbers in specific positions. If the first character of the string matches an overpunched value, it is replaced with its corresponding negative numeric value.

Overpunched values are defined as:

[‘J’, ‘K’, ‘L’, ‘M’, ‘N’, ‘O’, ‘P’, ‘Q’, ‘R’]

The index of the overpunched character determines the numeric value, starting from -1 for ‘J’, -2 for ‘K’, and so on.

Parameters:

line (str) – The input string to be parsed and adjusted.

Returns:

The modified string where overpunched values have been replaced

with their numeric equivalents.

Return type:

str