Function msStringSplit

mapstring.c:771–821

** Splits a string into multiple strings based on ch. Consecutive ch's are ignored. */

** Splits a string into multiple strings based on ch. Consecutive ch's are ignored.
*/
char **msStringSplit(const char *string, char ch, int *num_tokens) 
{
  int i,j,k;
  int length,n;
  char **token;
  char last_ch='\0';

  n = 1; /* always at least 1 token, the string itself */
  length = strlen(string);
  for(i=0; i<length; i++) {
    if(string[i] == ch && last_ch != ch)
      n++;
    last_ch = string[i];
  }

  token = (char **) msSmallMalloc(sizeof(char *)*n);
  if(!token) return(NULL);
  
  k = 0;
  token[k] = (char *)msSmallMalloc(sizeof(char)*(length+1));
  if(!token[k]) return(NULL);

  j = 0;
  last_ch='\0';
  for(i=0; i<length; i++) {
    if(string[i] == ch) {
      
      if(last_ch == ch)
	continue;
      
      token[k][j] = '\0'; /* terminate current token */      
      
      k++;
      token[k] = (char *)msSmallMalloc(sizeof(char)*(length+1));
      if(!token[k]) return(NULL);
      
      j = 0;      
    } else {      
      token[k][j] = string[i];
      j++;
    }
    
    last_ch = string[i]; 
  }

  token[k][j] = '\0'; /* terminate last token */

  *num_tokens = n;

  return(token);
}

/*
 This function is a copy of CSLTokenizeString2() function of the CPL component.