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#include <apop.h>
int main(){
char string1[] = "Hello. I am a string.";
assert(apop_regex(string1, "hell"));
apop_data *subs;
apop_regex(string1, "(e).*I.*(xxx)*(am)", .substrings = &subs);
//apop_data_show(subs);
assert(!strcmp(subs->text[0][0], "e"));
assert(!strlen(subs->text[0][1]));
assert(!strcmp(subs->text[0][2], "am"));
apop_data_free(subs);
//Split a comma-delimited list, throwing out white space.
//Notice that the regex includes only one instance of a non-comma blob
//ending in a non-space followed by a comma, but the function keeps
//applying it until the end of string.
char string2[] = " one, two , three ,four";
apop_regex(string2, " *([^,]*[^ ]) *(,|$) *", &subs);
assert(!strcmp(*subs->text[0], "one"));
assert(!strcmp(*subs->text[1], "two"));
assert(!strcmp(*subs->text[2], "three"));
assert(!strcmp(*subs->text[3], "four"));
apop_data_free(subs);
//Get a parenthetical. For EREs, \( \) match plain parens in the text.
char string3[] = " one (but secretly, two)";
apop_regex(string3, "(\\([^)]*\\))", &subs);
assert(!strcmp(*subs->text[0], "(but secretly, two)"));
apop_data_free(subs);
//NULL input string ==> no-op.
int match_count = apop_regex(NULL, " *([^,]*[^ ]) *(,|$) *", &subs);
assert(!match_count);
assert(!subs);
}
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