1 files changed, 0 insertions, 79 deletions
diff --git a/vcs-svn/sliding_window.c b/vcs-svn/sliding_window.c
deleted file mode 100644
index 06d273c9e8..0000000000
--- a/vcs-svn/sliding_window.c
+++ /dev/null
@@ -1,79 +0,0 @@
-/*
- * Licensed under a two-clause BSD-style license.
- * See LICENSE for details.
- */
-
-#include "git-compat-util.h"
-#include "sliding_window.h"
-#include "line_buffer.h"
-#include "strbuf.h"
-
-static int input_error(struct line_buffer *file)
-{
-	if (!buffer_ferror(file))
-		return error("delta preimage ends early");
-	return error_errno("cannot read delta preimage");
-}
-
-static int skip_or_whine(struct line_buffer *file, off_t gap)
-{
-	if (buffer_skip_bytes(file, gap) != gap)
-		return input_error(file);
-	return 0;
-}
-
-static int read_to_fill_or_whine(struct line_buffer *file,
-				struct strbuf *buf, size_t width)
-{
-	buffer_read_binary(file, buf, width - buf->len);
-	if (buf->len != width)
-		return input_error(file);
-	return 0;
-}
-
-static int check_offset_overflow(off_t offset, uintmax_t len)
-{
-	if (len > maximum_signed_value_of_type(off_t))
-		return error("unrepresentable length in delta: "
-				"%"PRIuMAX" > OFF_MAX", len);
-	if (signed_add_overflows(offset, (off_t) len))
-		return error("unrepresentable offset in delta: "
-				"%"PRIuMAX" + %"PRIuMAX" > OFF_MAX",
-				(uintmax_t) offset, len);
-	return 0;
-}
-
-int move_window(struct sliding_view *view, off_t off, size_t width)
-{
-	off_t file_offset;
-	assert(view);
-	assert(view->width <= view->buf.len);
-	assert(!check_offset_overflow(view->off, view->buf.len));
-
-	if (check_offset_overflow(off, width))
-		return -1;
-	if (off < view->off || off + width < view->off + view->width)
-		return error("invalid delta: window slides left");
-	if (view->max_off >= 0 && view->max_off < off + (off_t) width)
-		return error("delta preimage ends early");
-
-	file_offset = view->off + view->buf.len;
-	if (off < file_offset) {
-		/* Move the overlapping region into place. */
-		strbuf_remove(&view->buf, 0, off - view->off);
-	} else {
-		/* Seek ahead to skip the gap. */
-		if (skip_or_whine(view->file, off - file_offset))
-			return -1;
-		strbuf_setlen(&view->buf, 0);
-	}
-
-	if (view->buf.len > width)
-		; /* Already read. */
-	else if (read_to_fill_or_whine(view->file, &view->buf, width))
-		return -1;
-
-	view->off = off;
-	view->width = width;
-	return 0;
-}