Add new ply_buffer_remove_bytes_at_end

This function is like ply_buffer_remove_bytes, but it
truncates away the end of the buffer instead of shifting
the contents over the start of the buffer.

1 files changed, 11 insertions, 0 deletions

diff --git a/src/libply/ply-buffer.c b/src/libply/ply-buffer.c
index 26f4ea0..3f64aec 100644
--- a/src/libply/ply-buffer.c
+++ b/src/libply/ply-buffer.c
@@ -85,6 +85,17 @@ ply_buffer_remove_bytes (ply_buffer_t *buffer,
     }
 }
 
+void
+ply_buffer_remove_bytes_at_end (ply_buffer_t *buffer,
+                                size_t        bytes_to_remove)
+{
+  assert (buffer != NULL);
+
+  bytes_to_remove = MIN (buffer->size, bytes_to_remove);
+
+  buffer->size -= bytes_to_remove;
+}
+
 ply_buffer_t *
 ply_buffer_new (void)
 {