Break String into SubStrings. The SepChars
argument provides the characters that act as separators and thus the
length of
SubStrings is one more than the number of separators found if
SepChars and PadChars do not have common
characters. If
SepChars and PadChars are equal, sequences of
adjacent separators act as a single separator. Leading and trailing
characters for each substring that appear in PadChars are
removed from the substring. The input arguments can be either atoms,
strings or char/code lists. Compatible with ECLiPSe. Below are some
examples:
% a simple split
?- split_string("a.b.c.d", ".", "", L).
L = ["a", "b", "c", "d"].
% Consider sequences of separators as a single one
?- split_string("/home//jan///nice/path", "/", "/", L).
L = ["home", "jan", "nice", "path"].
% split and remove white space
?- split_string("SWI-Prolog, 7.0", ",", " ", L).
L = ["SWI-Prolog", "7.0"].
% only remove leading and trailing white space
?- split_string(" SWI-Prolog ", "", "\s\t\n", L).
L = ["SWI-Prolog"].
In the typical use cases, SepChars either does not overlap
PadChars or is equivalent to handle multiple adjacent
separators as a single (often white space). The behaviour with partially
overlapping sets of padding and separators should be considered
undefined. See also read_string/5.
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