RosettaCodeData/Task/Tokenize-a-string/Cowgol/tokenize-a-string.cowgol

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include "cowgol.coh";
include "strings.coh";
# Tokenize a string. Note: the string is modified in place.
sub tokenize(sep: uint8, str: [uint8], out: [[uint8]]): (length: intptr) is
length := 0;
loop
[out] := str;
out := @next out;
length := length + 1;
while [str] != 0 and [str] != sep loop
str := @next str;
end loop;
if [str] == sep then
[str] := 0;
str := @next str;
else
break;
end if;
end loop;
end sub;
# The string
var string: [uint8] := "Hello,How,Are,You,Today";
# Make a mutable copy
var buf: uint8[64];
CopyString(string, &buf[0]);
# Tokenize the copy
var parts: [uint8][64];
var length := tokenize(',', &buf[0], &parts[0]) as @indexof parts;
# Print each string
var i: @indexof parts := 0;
while i < length loop
print(parts[i]);
print(".\n");
i := i + 1;
end loop;