/* Copyright Abandoned 1996 TCX DataKonsult AB & Monty Program KB & Detron HB   This file is public domain and comes with NO WARRANTY of any kind *//*  Code for handling strings with can grow dynamicly.  Copyright Monty Program KB.  By monty.*/#include "mysys_priv.h"#include <m_string.h>my_bool init_dynamic_string(DYNAMIC_STRING *str, my_string init_str,			    uint init_alloc, uint alloc_increment){  uint length;  DBUG_ENTER("init_dynamic_string");  if (!alloc_increment)    alloc_increment=128;  length=1;  if (init_str && (length=strlen(init_str)+1) < init_alloc)    init_alloc=((length+alloc_increment-1)/alloc_increment)*alloc_increment;  if (!init_alloc)    init_alloc=alloc_increment;  if (!(str->str=(char*) my_malloc(init_alloc,MYF(MY_WME))))    DBUG_RETURN(TRUE);  str->length=length-1;  if (init_str)    memcpy(str->str,init_str,length);  str->max_length=init_alloc;  str->alloc_increment=alloc_increment;  DBUG_RETURN(FALSE);}my_bool dynstr_append(DYNAMIC_STRING *str, my_string append){  char *new_ptr;  uint length=(uint) strlen(append)+1;  if (str->length+length > str->max_length)  {    uint new_length=(str->length+length+str->alloc_increment-1)/      str->alloc_increment;    new_length*=str->alloc_increment;    if (!(new_ptr=(char*) my_realloc(str->str,new_length,MYF(MY_WME))))      return TRUE;    str->str=new_ptr;    str->max_length=new_length;  }  memcpy(str->str + str->length,append,length);  str->length+=length-1;  return FALSE;}void dynstr_free(DYNAMIC_STRING *str){  if (str->str)  {    my_free(str->str,MYF(MY_WME));    str->str=0;  }}