/* -*-c-*-
*
- * $Id: selbuf.c,v 1.2 1999/05/17 20:36:50 mdw Exp $
+ * $Id: selbuf.c,v 1.6 2004/04/08 01:36:13 mdw Exp $
*
* Line-buffering select handler
*
* (c) 1999 Straylight/Edgeware
*/
-/*----- Licensing notice --------------------------------------------------*
+/*----- Licensing notice --------------------------------------------------*
*
* This file is part of the mLib utilities library.
*
* it under the terms of the GNU Library General Public License as
* published by the Free Software Foundation; either version 2 of the
* License, or (at your option) any later version.
- *
+ *
* mLib is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Library General Public License for more details.
- *
+ *
* You should have received a copy of the GNU Library General Public
* License along with mLib; if not, write to the Free
* Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
* MA 02111-1307, USA.
*/
-/*----- Revision history --------------------------------------------------*
- *
- * $Log: selbuf.c,v $
- * Revision 1.2 1999/05/17 20:36:50 mdw
- * Make the magical constants for the buffer flags uppercase.
- *
- * Revision 1.1 1999/05/14 21:01:15 mdw
- * Integrated `select' handling bits from the background resolver project.
- *
- */
-
/*----- Header files ------------------------------------------------------*/
#include <errno.h>
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@ --- *
* Arguments: @selbuf *b@ = pointer to buffer block
* @sel_state *s@ = pointer to select state to attach to
* @int fd@ = file descriptor to listen to
- * @void (*func)(char *s, void *p)@ = function to call
+ * @lbuf_func *func@ = function to call
* @void *p@ = argument for function
*
* Returns: ---
* Use: Initializes a buffer block.
*/
-void selbuf_init(selbuf *b,
- sel_state *s,
- int fd,
- void (*func)(char */*s*/, void */*p*/),
- void *p)
+void selbuf_init(selbuf *b, sel_state *s, int fd, lbuf_func *func, void *p)
{
lbuf_init(&b->b, func, p);
b->b.f &= ~LBUF_ENABLE;
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 -------------------------------------------------*/