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#define i_extern
#include <stc/cregex.h>
int main()
{
struct { const char *pattern, *input; } s[] = {
{"(\\d\\d\\d\\d)[-_](1[0-2]|0[1-9])[-_](3[01]|[12][0-9]|0[1-9])",
"date: 2024-02-29 leapyear day, christmas eve is on 2022-12-24."
},
{"(https?://|ftp://|www\\.)([0-9A-Za-z@:%_+~#=-]+\\.)+([a-z][a-z][a-z]?)(/[/0-9A-Za-z\\.@:%_+~#=\\?&-]*)?",
"https://en.cppreference.com/w/cpp/regex/regex_search"
},
{"!((abc|123)+)!", "!123abcabc!"},
{"(\\p{Alpha}+ )+(\\p{Nd}+)", "Großpackung süßigkeiten 199"},
{"\\p{Han}+", "This is Han: 王明：那是杂志吗？"},
};
c_auto (cregex, re)
c_forrange (i, c_ARRAYLEN(s))
{
int res = cregex_compile(&re, s[i].pattern);
if (res < 0) {
printf("error in regex pattern: %d\n", res);
continue;
}
printf("\ninput: %s\n", s[i].input);
c_formatch (j, &re, s[i].input) {
c_forrange (k, cregex_captures(&re))
printf(" submatch %lld: %.*s\n", k, c_SV(j.match[k]));
}
}
}
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