From: Willy Tarreau <w@1wt.eu>
Date: Sun, 27 Dec 2009 14:45:38 +0000 (+0100)
Subject: [MINOR] buffers: add buffer_ignore() to skip some bytes
X-Git-Tag: v1.4-dev5~43
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=d21e01c63fec778f85f8321bbb373ab90ec96fb3;p=thirdparty%2Fhaproxy.git

[MINOR] buffers: add buffer_ignore() to skip some bytes

This simple function will be used to skip blanks at the beginning of a
request or response.
---

diff --git a/include/proto/buffers.h b/include/proto/buffers.h
index c19a284fc9..d5dd781bcb 100644
--- a/include/proto/buffers.h
+++ b/include/proto/buffers.h
@@ -173,6 +173,21 @@ static inline void buffer_cut_tail(struct buffer *buf)
 		buf->flags |= BF_FULL;
 }
 
+/* Cut the <n> next unsent bytes of the buffer. The caller must ensure that <n>
+ * is smaller than the actual buffer's length. This is mainly used to remove
+ * empty lines at the beginning of a request or a response.
+ */
+static inline void buffer_ignore(struct buffer *buf, int n)
+{
+	buf->l -= n;
+	buf->w += n;
+	if (buf->w >= buf->data + buf->size)
+		buf->w -= buf->size;
+	buf->flags &= ~BF_FULL;
+	if (buf->l >= buffer_max_len(buf))
+		buf->flags |= BF_FULL;
+}
+
 /* marks the buffer as "shutdown" ASAP for reads */
 static inline void buffer_shutr_now(struct buffer *buf)
 {