Move "optimize unpack order" to from fstree to rdsquashfs

Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>

1 files changed, 0 insertions, 119 deletions

diff --git a/lib/fstree/optimize_unpack_order.c b/lib/fstree/optimize_unpack_order.c
deleted file mode 100644
index 972d4b3..0000000
--- a/lib/fstree/optimize_unpack_order.c
+++ /dev/null
@@ -1,119 +0,0 @@
-/* SPDX-License-Identifier: GPL-3.0-or-later */
-/*
- * optimize_unpack_order.c
- *
- * Copyright (C) 2019 David Oberhollenzer <goliath@infraroot.at>
- */
-#include "config.h"
-#include "fstree.h"
-
-static bool has_fragment(const fstree_t *fs, const file_info_t *file)
-{
-	if (file->size % fs->block_size == 0)
-		return false;
-
-	return file->fragment_offset < fs->block_size &&
-		(file->fragment != 0xFFFFFFFF);
-}
-
-static int compare_files(const fstree_t *fs, const file_info_t *lhs,
-			 const file_info_t *rhs)
-{
-	/* NOOP < everything else */
-	if (lhs->input_file == NULL)
-		return rhs->input_file == NULL ? 0 : -1;
-
-	if (rhs->input_file == NULL)
-		return 1;
-
-	/* Files with fragments come first, ordered by ID.
-	   In case of tie, files without data blocks come first,
-	   and the others are ordered by start block. */
-	if (has_fragment(fs, lhs)) {
-		if (!(has_fragment(fs, rhs)))
-			return -1;
-
-		if (lhs->fragment < rhs->fragment)
-			return -1;
-		if (lhs->fragment > rhs->fragment)
-			return 1;
-
-		if (lhs->size < fs->block_size)
-			return (rhs->size < fs->block_size) ? 0 : -1;
-		if (rhs->size < fs->block_size)
-			return 1;
-		goto order_by_start;
-	}
-
-	if (has_fragment(fs, rhs))
-		return 1;
-
-	/* order the rest by start block */
-order_by_start:
-	return lhs->startblock < rhs->startblock ? -1 :
-		lhs->startblock > rhs->startblock ? 1 : 0;
-}
-
-/* TODO: unify ad-hoc merge sort with the one in fstree_sort */
-static file_info_t *merge(const fstree_t *fs, file_info_t *lhs,
-			  file_info_t *rhs)
-{
-	file_info_t *it;
-	file_info_t *head = NULL;
-	file_info_t **next_ptr = &head;
-
-	while (lhs != NULL && rhs != NULL) {
-		if (compare_files(fs, lhs, rhs) <= 0) {
-			it = lhs;
-			lhs = lhs->next;
-		} else {
-			it = rhs;
-			rhs = rhs->next;
-		}
-
-		*next_ptr = it;
-		next_ptr = &it->next;
-	}
-
-	it = (lhs != NULL ? lhs : rhs);
-	*next_ptr = it;
-	return head;
-}
-
-static file_info_t *list_sort(const fstree_t *fs, file_info_t *head)
-{
-	file_info_t *it, *half, *prev;
-
-	it = half = prev = head;
-	while (it != NULL) {
-		prev = half;
-		half = half->next;
-		it = it->next;
-		if (it != NULL) {
-			it = it->next;
-		}
-	}
-
-	// half refers to the (count/2)'th element ROUNDED UP.
-	// It will be null therefore only in the empty and the
-	// single element list
-	if (half == NULL) {
-		return head;
-	}
-
-	prev->next = NULL;
-
-	return merge(fs, list_sort(fs, head), list_sort(fs, half));
-}
-
-file_info_t *optimize_unpack_order(fstree_t *fs)
-{
-	file_info_t *file_list;
-
-	file_list = list_sort(fs, fs->files);
-	while (file_list != NULL && file_list->input_file == NULL)
-		file_list = file_list->next;
-
-	fs->files = NULL;
-	return file_list;
-}