Function replace

regexp.c:39–80

! \brief Replace in replacement tokens \\d with substrings of string pointed by * pmatch. */

 * pmatch.
 */
int replace(regmatch_t* pmatch, char* string, char* replacement, str* result)
{
	int len, i, j, digit, size;

	len = strlen(replacement);
	j = 0;

	for (i = 0; i < len; i++) {
		if (replacement[i] == '\\') {
			if (i < len - 1) {
				if (isdigit((unsigned char)replacement[i+1])) {
					digit = replacement[i+1] - '0';
					if (pmatch[digit].rm_so != -1) {
						size = pmatch[digit].rm_eo - pmatch[digit].rm_so;
						if (j + size < result->len) {
							memcpy(&(result->s[j]), string+pmatch[digit].rm_so, size);
							j = j + size;
						} else {
							return -1;
						}
					} else {
						return -2;
					}
					i = i + 1;
					continue;
				} else {
					i = i + 1;
				}
			} else {
				return -3;
			}
		}
		if (j + 1 < result->len) {
			result->s[j] = replacement[i];
			j = j + 1;
		} else {
			return -4;
		}
	}
	result->len = j;
	return 1;
}


/*! \brief Match pattern against string and store result in pmatch */