First commit

Signed-off-by: Mattias Andrée <maandree@kth.se>

1 files changed, 16 insertions, 0 deletions

diff --git a/shiftbuffer.c b/shiftbuffer.c
new file mode 100644
index 0000000..6a1213e
--- /dev/null
+++ b/shiftbuffer.c
@@ -0,0 +1,16 @@
+/* See LICENSE file for copyright and license details. */
+#include "common.h"
+
+
+void
+shiftbuffer(struct algorithm *algorithms, size_t nalgorithms, struct buffer *buffer)
+{
+	size_t i, consumed = SIZE_MAX;
+	for (i = 0; i < nalgorithms; i++)
+		consumed = MIN(consumed, algorithms[i].offset);
+	if (!consumed)
+		return;
+	for (i = 0; i < nalgorithms; i++)
+		algorithms[i].offset -= consumed;
+	memmove(&buffer->buf[0], &buffer->buf[consumed], buffer->length -= consumed);
+}