Function strclean

Singular/fehelp.cc:364–380

* * Implementation: local function * *****************************************************************/ Remove whitspaces from beginning and end, return NULL if only whitespaces

 *****************************************************************/
// Remove whitspaces from beginning and end, return NULL if only whitespaces
static char* strclean(char* str)
{
  if (str == NULL) return NULL;
  char *s=str;
  while ((*s <= ' ') && (*s != '\0')) s++;
  if (*s == '\0') return NULL;
  char *ss=s;
  while (*ss!='\0') ss++;
  ss--;
  while ((*ss <= ' ') && (*ss != '\0'))
  {
    *ss='\0';
    ss--;
  }
  if (*ss == '\0') return NULL;
  return s;
}

// Finds help entry for key:
// returns filled-in hentry and TRUE, on success