onigmotest.c

#include <stdio.h>
#include <string.h>
#include <onigmo.h>

#define SLEN(s)  strlen(s)

static OnigRegion region;
int main() {
    int r;
    static regex_t* reg;
    OnigErrorInfo einfo;
    char buf[1000];
    int option = ONIG_OPTION_DEFAULT; // ONIG_OPTION_NEGATE_SINGLELINE; //; // ONIG_OPTION_NONE;

    char*pattern = "\\=\\?";
    const char*str = "💌";

    printf("PATTERN:     '%s'\n", pattern);
    printf("STRING:      '%s'\n", str);

    r = onig_new(&reg, pattern, (pattern + SLEN(pattern)), ONIG_OPTION_IGNORECASE, ONIG_ENCODING_UTF8, ONIG_SYNTAX_RUBY, &einfo);
    if (r) {
        char s[ONIG_MAX_ERROR_MESSAGE_LEN];
        onig_error_code_to_str((UChar* )s, r, &einfo);
        printf("COMPILE ERROR: %s\n", s);
        return 0;
    }

    r = onig_search(reg, str, (str + SLEN(str)), str, (str + SLEN(str)), &region, ONIG_OPTION_NONE);
    if (r < ONIG_MISMATCH) {
        char s[ONIG_MAX_ERROR_MESSAGE_LEN];
        onig_error_code_to_str((UChar* )s, r);
        printf("ERROR: %s\n", s);
        return 0;
    }

    printf("MATCH:       %d\n", r);
    printf("REGISTERS:   %d\n", region.num_regs);
    int i;

    for(i = 0; i < region.num_regs; i++) {
        strncpy(buf, str + region.beg[i], region.end[i] - region.beg[i]);
        buf[region.end[i] - region.beg[i]] = 0;
        printf("   NR %d     - (%d, %d) - '%s'\n", i, region.beg[i], region.end[i], buf);
    }
}