libfdisk: use fdisk_table to generate output

 * add generic fdisk_iter iterator
 * use fdisk_table to convert partition table to human readable output
 * clean up partition.c API (don't use reference to fdisk_context in
   fdisk_partition struct)
 * extern table.c API to use fdisk_iter iterator
 * remove old fdisk_list_partitions()

Signed-off-by: Karel Zak <kzak@redhat.com>

1 files changed, 73 insertions, 0 deletions

diff --git a/libfdisk/src/iter.c b/libfdisk/src/iter.c
new file mode 100644
index 000000000..8e2f34202
--- /dev/null
+++ b/libfdisk/src/iter.c
@@ -0,0 +1,73 @@
+/*
+ * Copyright (C) 2009 Karel Zak <kzak@redhat.com>
+ *
+ * This file may be redistributed under the terms of the
+ * GNU Lesser General Public License.
+ */
+
+/**
+ * SECTION: iter
+ * @title: Iterator
+ * @short_description: unified iterator
+ *
+ * The iterator keeps the direction and the last position
+ * for access to the internal library tables/lists.
+ */
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+
+#include "fdiskP.h"
+
+/**
+ * fdisk_new_iter:
+ * @direction: FDISK_INTER_{FOR,BACK}WARD direction
+ *
+ * Returns: newly allocated generic libmount iterator.
+ */
+struct fdisk_iter *fdisk_new_iter(int direction)
+{
+	struct fdisk_iter *itr = calloc(1, sizeof(*itr));
+	if (!itr)
+		return NULL;
+	itr->direction = direction;
+	return itr;
+}
+
+/**
+ * fdisk_free_iter:
+ * @itr: iterator pointer
+ *
+ * Deallocates the iterator.
+ */
+void fdisk_free_iter(struct fdisk_iter *itr)
+{
+	free(itr);
+}
+
+/**
+ * fdisk_reset_iter:
+ * @itr: iterator pointer
+ * @direction: FDISK_INTER_{FOR,BACK}WARD or -1 to keep the direction unchanged
+ *
+ * Resets the iterator.
+ */
+void fdisk_reset_iter(struct fdisk_iter *itr, int direction)
+{
+	if (direction == -1)
+		direction = itr->direction;
+
+	memset(itr, 0, sizeof(*itr));
+	itr->direction = direction;
+}
+
+/**
+ * fdisk_iter_get_direction:
+ * @itr: iterator pointer
+ *
+ * Returns: FDISK_INTER_{FOR,BACK}WARD
+ */
+int fdisk_iter_get_direction(struct fdisk_iter *itr)
+{
+	return itr->direction;
+}