/*

 * sql.c

 */

#include <stdio.h>

#include <string.h>

#include "oniguruma.h"

extern int main(int argc, char* argv[])

{

  static OnigSyntaxType SQLSyntax;

  int r;

  unsigned char *start, *range, *end;

  regex_t* reg;

  OnigErrorInfo einfo;

  OnigRegion *region;

  static UChar* pattern = (UChar* )"\\_%\\\\__zz";

  static UChar* str = (UChar* )"a_abcabcabc\\ppzz";

  OnigEncoding use_encs[] = { ONIG_ENCODING_ASCII };

  onig_initialize(use_encs, sizeof(use_encs)/sizeof(use_encs[0]));

  onig_set_syntax_op      (&SQLSyntax, ONIG_SYN_OP_VARIABLE_META_CHARACTERS);

  onig_set_syntax_op2     (&SQLSyntax, 0);

  onig_set_syntax_behavior(&SQLSyntax, 0);

  onig_set_syntax_options (&SQLSyntax, ONIG_OPTION_MULTILINE);

  onig_set_meta_char(&SQLSyntax, ONIG_META_CHAR_ESCAPE, (OnigCodePoint )'\\');

  onig_set_meta_char(&SQLSyntax, ONIG_META_CHAR_ANYCHAR, (OnigCodePoint )'_');

  onig_set_meta_char(&SQLSyntax, ONIG_META_CHAR_ANYTIME,

		     ONIG_INEFFECTIVE_META_CHAR);

  onig_set_meta_char(&SQLSyntax, ONIG_META_CHAR_ZERO_OR_ONE_TIME,

		     ONIG_INEFFECTIVE_META_CHAR);

  onig_set_meta_char(&SQLSyntax, ONIG_META_CHAR_ONE_OR_MORE_TIME,

		     ONIG_INEFFECTIVE_META_CHAR);

  onig_set_meta_char(&SQLSyntax, ONIG_META_CHAR_ANYCHAR_ANYTIME,

		     (OnigCodePoint )'%');

  r = onig_new(&reg, pattern, pattern + strlen((char* )pattern),

	       ONIG_OPTION_DEFAULT, ONIG_ENCODING_ASCII, &SQLSyntax, &einfo);

  if (r != ONIG_NORMAL) {

    char s[ONIG_MAX_ERROR_MESSAGE_LEN];

    onig_error_code_to_str((UChar* )s, r, &einfo);

    fprintf(stderr, "ERROR: %s\n", s);

    return -1;

  }

  region = onig_region_new();

  end   = str + strlen((char* )str);

  start = str;

  range = end;

  r = onig_search(reg, str, end, start, range, region, ONIG_OPTION_NONE);

  if (r >= 0) {

    int i;

    fprintf(stderr, "match at %d\n", r);

    for (i = 0; i < region->num_regs; i++) {

      fprintf(stderr, "%d: (%d-%d)\n", i, region->beg[i], region->end[i]);

    }

  }

  else if (r == ONIG_MISMATCH) {

    fprintf(stderr, "search fail\n");

  }

  else { /* error */

    char s[ONIG_MAX_ERROR_MESSAGE_LEN];

    onig_error_code_to_str((UChar* )s, r);

    fprintf(stderr, "ERROR: %s\n", s);

    return -1;

  }

  onig_region_free(region, 1 /* 1:free self, 0:free contents only */);

  onig_free(reg);

  onig_end();

  return 0;

}