"STRN" String functions

Fingerprint ID:0x5354524e

This fingerprint, from RC/Funge-98, implements operations on null-terminated string (“0gnirts”). It provides the following commands:

A : a^s b^s — str^s

Append b to a.

C : b^s a^s — n

Pushes -1 if a is lexicographically less than b, 1 if greater than, and 0 otherwise.

D : str^s —

Prints the string.

F : needle^s haystack^s — str^s

Pushes the longest suffix of haystack starting with needle. Pushes null string (i.e. one zero) if needle is not in haystack.

G : pos^v — str^s

Gets the string from given position. It scans Funge space rightwards, from pos to first zero cell (as done by P command). Reflects if no zero cell found.

I : — str^s

Reads the string from standard input, discarding the trailing newline. Reflects at EOF.

L : str^s n — str^s

Pushes leftmost (at most) n characters of str. Reflects if n is negative.

M : str^s s n — str^s

Pushes the substring of str starting at offset s ending at offset s+n. The offset is 0 at the first character. If the ending offset is past the end of string, pushes less than n characters. Reflects if n is negative or the starting offset is out of bound.

N : str^s n — str^s

Pushes the length of string, except trailing zero. Retains the original string.

P : str^s pos^v —

Puts the string to given position. It writes each characters of str rightwards, and writes zero cell at the end.

R : str^s n — str^s

Pushes rightmost (at most) n characters of str. Reflects if n is negative.

S : n — str^s

Pushes the string representation of n.

V : str^s — n

Parses the string representation of number. It works like atoi(3) call, but reflects for invalid input.