string

struct _ec_string {
  int len;
  int allocd;
  char *buffer;
  int type;
    /** stored using malloc(3C) memory */
#define STRING_TYPE_MALLOC MEMTYPE_IS_MALLOC_3C
    /** stored using ECMEMTYPE_STRING */
#define STRING_TYPE_ECSTRING MEMTYPE_STRING
    /** stored using ECMEMTYPE_MESSAGE_BODY */
#define STRING_TYPE_MESSAGE_BODY MEMTYPE_MESSAGE_BODY
    /** MEMTYPE_SIEVE backed string.  All strings in sieve are utf-8 encoded */
#define STRING_TYPE_SIEVE MEMTYPE_SIEVE
    /* stored in externally managed memory that cannot grow */
#define STRING_TYPE_STATIC -100
    /** stored in ECMEMTYPE_STRING until a threshold is crossed;
     * memory is then written to disk */
#define STRING_TYPE_DISK_BACKED -101
    /** written directly to the backing */
#define STRING_TYPE_IO_OBJECT -102
    /** stored in a chain of growbufs */
#define STRING_TYPE_GROWBUF -103
    /** start with a static buffer, but switch to STRING_TYPE_ECSTRING if
     * we need to grow beyond its bounds */
#define STRING_TYPE_GROWABLE_STATIC -104
  io_object *backing;
};