aboutsummaryrefslogtreecommitdiff
path: root/sys/sys
diff options
context:
space:
mode:
authorDag-Erling Smørgrav <des@FreeBSD.org>2000-12-13 19:51:07 +0000
committerDag-Erling Smørgrav <des@FreeBSD.org>2000-12-13 19:51:07 +0000
commit60ec41303838ce1024aa0a51577b00af85b05728 (patch)
treee514fe4968e83533b985d9acf1803ca8df0fb693 /sys/sys
parent3306abc4593f4e4e4619801f83ac2305a152de17 (diff)
downloadsrc-60ec41303838ce1024aa0a51577b00af85b05728.tar.gz
src-60ec41303838ce1024aa0a51577b00af85b05728.zip
String buffer API
Notes
Notes: svn path=/head/; revision=69990
Diffstat (limited to 'sys/sys')
-rw-r--r--sys/sys/sbuf.h76
1 files changed, 76 insertions, 0 deletions
diff --git a/sys/sys/sbuf.h b/sys/sys/sbuf.h
new file mode 100644
index 000000000000..5995ec1c32b4
--- /dev/null
+++ b/sys/sys/sbuf.h
@@ -0,0 +1,76 @@
+/*-
+ * Copyright (c) 2000 Poul-Henning Kamp and Dag-Erling Codan Smrgrav
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer
+ * in this position and unchanged.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. The name of the author may not be used to endorse or promote products
+ * derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * $FreeBSD$
+ */
+
+#ifndef _SYS_SBUF_H_
+#define _SYS_SBUF_H_
+
+/*
+ * Structure definition
+ */
+struct sbuf {
+ char *s_buf; /* storage buffer */
+ struct sbuf *s_next; /* next in chain */
+ size_t s_size; /* size of storage buffer */
+ size_t s_len; /* current length of string */
+#define SBUF_AUTOEXTEND 0x00000001 /* automatically extend buffer */
+#define SBUF_DYNAMIC 0x00010000 /* s_buf must be freed */
+#define SBUF_FINISHED 0x00020000 /* set by sbuf_finish() */
+#define SBUF_OVERFLOWED 0x00040000 /* sbuf overflowed */
+ int s_flags; /* flags */
+};
+
+/*
+ * Predicates
+ */
+#define SBUF_ISDYNAMIC(s) ((s)->s_flags & SBUF_DYNAMIC)
+#define SBUF_ISFINISHED(s) ((s)->s_flags & SBUF_FINISHED)
+#define SBUF_HASOVERFLOWED(s) ((s)->s_flags & SBUF_OVERFLOWED)
+#define SBUF_HASROOM(s) ((s)->s_len < (s)->s_size - 1)
+
+/*
+ * Other macros
+ */
+#define SBUF_SETFLAG(s, f) do { (s)->s_flags |= (f); } while (0)
+
+/*
+ * API functions
+ */
+int sbuf_new(struct sbuf *s, char *buf, size_t length, int flags);
+int sbuf_setpos(struct sbuf *s, size_t pos);
+int sbuf_cat(struct sbuf *s, char *str);
+int sbuf_cpy(struct sbuf *s, char *str);
+int sbuf_printf(struct sbuf *s, char *fmt, ...);
+int sbuf_putc(struct sbuf *s, int c);
+int sbuf_finish(struct sbuf *s);
+char *sbuf_data(struct sbuf *s);
+size_t sbuf_len(struct sbuf *s);
+void sbuf_delete(struct sbuf *s);
+
+#endif