/* -*-c-*-
*
- * $Id: selbuf.c,v 1.2 1999/05/17 20:36:50 mdw Exp $
+ * $Id: selbuf.c,v 1.4 2000/06/17 10:38:14 mdw Exp $
*
* Line-buffering select handler
*
/*----- Revision history --------------------------------------------------*
*
* $Log: selbuf.c,v $
+ * Revision 1.4 2000/06/17 10:38:14 mdw
+ * Add support for variable buffer sizes.
+ *
+ * Revision 1.3 1999/05/22 13:41:00 mdw
+ * Fix end-of-file detection and error handling.
+ *
* Revision 1.2 1999/05/17 20:36:50 mdw
* Make the magical constants for the buffer flags uppercase.
*
int n;
sz = lbuf_free(&b->b, &p);
-again:
n = read(fd, p, sz);
- if (n <= 0) {
- switch (errno) {
- case EINTR:
- goto again;
- case EAGAIN:
+ if (n == 0)
+ lbuf_close(&b->b);
+ else if (n > 0)
+ lbuf_flush(&b->b, p, n);
+ else switch (errno) {
+ case EINTR:
+ case EAGAIN:
#if EAGAIN != EWOULDBLOCK
- case EWOULDBLOCK:
+ case EWOULDBLOCK:
#endif
- return;
- default:
- lbuf_close(&b->b);
- }
+ return;
+ default:
+ lbuf_close(&b->b);
}
- else
- lbuf_flush(&b->b, p, n);
+}
+
+/* --- @selbuf_setsize@ --- *
+ *
+ * Arguments: @selbuf *b@ = pointer to buffer block
+ * @size_t sz@ = size of buffer
+ *
+ * Returns: ---
+ *
+ * Use: Sets the size of the buffer used for reading lines.
+ */
+
+void selbuf_setsize(selbuf *b, size_t sz)
+{
+ lbuf_setsize(&b->b, sz);
}
/* --- @selbuf_init@ --- *
selbuf_enable(b);
}
+/* --- @selbuf_destroy@ --- *
+ *
+ * Arguments: @selbuf *b@ = pointer to buffer block
+ *
+ * Returns: ---
+ *
+ * Use: Deallocates a line buffer and frees any resources it owned.
+ */
+
+void selbuf_destroy(selbuf *b)
+{
+ selbuf_disable(b);
+ lbuf_destroy(&b->b);
+}
+
/*----- That's all, folks -------------------------------------------------*/