C regex for ini parse

regex.c

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

void getIni(char *result, const char *iniStr, const char *name) {
  regex_t re;
  char pattern[128];
  regmatch_t groups[2];

  sprintf(pattern, "\\s*%s\\s*=\\s*([^\r\n]+)", name);

  regcomp(&re, pattern, REG_EXTENDED);
  if(regexec(&re, iniStr, 2, groups, 0) == 0) {
    // Matched
    int sPos = groups[1].rm_so;
    int len = groups[1].rm_eo - sPos;
    while(*(iniStr + sPos + len - 1) == ' ') {
      len--;
    }
    strncpy(result, iniStr + sPos, len);
    result[len] = '\0';
  } else {
    result[0] = '\0';
  }

  regfree(&re);
}

int main(void) {
  char result[100];
  getIni(result, "hello = world           \nyou=are so    beautiful", "hello");
  printf("%s: [%s]\n", "hello", result);
  getIni(result, "hello = world           \nyou=are so    beautiful", "you");
  printf("%s: [%s]\n", "you", result);

  //printf("Hello World\n");
  return 0;
}