#define IS_SH_STRING(str) (SCM_CELL_TYPE(str)==SH_STRING_TAG)
+void
+scm_i_print_stringbuf (SCM exp, SCM port, scm_print_state *pstate)
+{
+ SCM str;
+
+ scm_i_pthread_mutex_lock (&stringbuf_write_mutex);
+ SET_STRINGBUF_SHARED (exp);
+ scm_i_pthread_mutex_unlock (&stringbuf_write_mutex);
+
+ str = scm_double_cell (RO_STRING_TAG, SCM_UNPACK(exp),
+ 0, STRINGBUF_LENGTH (exp));
+
+ scm_puts ("#<stringbuf ", port);
+ scm_iprin1 (str, port, pstate);
+ scm_puts (">", port);
+}
+
SCM scm_nullstr;
+static SCM null_stringbuf;
+
+static void
+init_null_stringbuf (void)
+{
+ null_stringbuf = make_stringbuf (0);
+ SET_STRINGBUF_SHARED (null_stringbuf);
+}
+
/* Create a scheme string with space for LEN 8-bit Latin-1-encoded
characters. CHARSP, if not NULL, will be set to location of the
char array. If READ_ONLY_P, the returned string is read-only;
SCM
scm_i_make_string (size_t len, char **charsp, int read_only_p)
{
- static SCM null_stringbuf = SCM_BOOL_F;
SCM buf;
SCM res;
if (len == 0)
{
- if (SCM_UNLIKELY (scm_is_false (null_stringbuf)))
- {
- null_stringbuf = make_stringbuf (0);
- SET_STRINGBUF_SHARED (null_stringbuf);
- }
+ static scm_i_pthread_once_t once = SCM_I_PTHREAD_ONCE_INIT;
+ scm_i_pthread_once (&once, init_null_stringbuf);
buf = null_stringbuf;
}
else
if (pti->encoding_mode == SCM_PORT_ENCODING_MODE_LATIN1)
return scm_from_latin1_stringn (str, len);
else if (pti->encoding_mode == SCM_PORT_ENCODING_MODE_UTF8
- && pt->ilseq_handler == SCM_FAILED_CONVERSION_ERROR)
+ && (pt->ilseq_handler == SCM_FAILED_CONVERSION_ERROR
+ || (u8_check ((uint8_t *) str, len) == NULL)))
return scm_from_utf8_stringn (str, len);
else
return scm_from_stringn (str, len, pt->encoding, pt->ilseq_handler);