Function msGetExpressionString

mapfile.c:2143–2174

msGetExpressionString() * * Returns the string representation of this expression, including delimiters * and any flags (e.g. i = case-insensitive). * * Returns a newly allocated buffer that should be freed by the caller or NULL. */

 * Returns a newly allocated buffer that should be freed by the caller or NULL.
 */
char *msGetExpressionString(expressionObj *exp) 
{
  if(exp->string) {
    char *exprstring;
    size_t buffer_size;
    const char *case_insensitive = "";

    if(exp->flags & MS_EXP_INSENSITIVE)
      case_insensitive = "i";

    /* Alloc buffer big enough for string + 2 delimiters + 'i' + \0 */
    buffer_size = strlen(exp->string)+4;
    exprstring = (char*)msSmallMalloc(buffer_size);

    switch(exp->type) {
    case(MS_REGEX):
      snprintf(exprstring, buffer_size, "/%s/%s", exp->string, case_insensitive);
      return exprstring;
    case(MS_STRING):
      snprintf(exprstring, buffer_size, "\"%s\"%s", exp->string, case_insensitive);
      return exprstring;
    case(MS_EXPRESSION):
      snprintf(exprstring, buffer_size, "(%s)", exp->string);
      return exprstring;
    default:
      /* We should never get to here really! */
      free(exprstring);
      return NULL;
    }
  }
  return NULL;
}

static void writeExpression(FILE *stream, int indent, const char *name, expressionObj *exp)
{