Cleanup: libcommon: try to split up some of the larger files

The sqsf_writer is moved to a separate header, as well as the compressor
related stuff. The statistics function is moved into the writer code, as
this is the only place that actually uses it. The writer code itself is
split up into a hand full of file in their own subdirectory.

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

1 files changed, 87 insertions, 0 deletions

diff --git a/include/simple_writer.h b/include/simple_writer.h
new file mode 100644
index 0000000..1a3302b
--- /dev/null
+++ b/include/simple_writer.h
@@ -0,0 +1,87 @@
+/* SPDX-License-Identifier: GPL-3.0-or-later */
+/*
+ * simple_writer.h
+ *
+ * Copyright (C) 2019 David Oberhollenzer <goliath@infraroot.at>
+ */
+#ifndef SIMPLE_WRITER_H
+#define SIMPLE_WRITER_H
+
+#include "config.h"
+
+#include "sqfs/block_processor.h"
+#include "sqfs/block_writer.h"
+#include "sqfs/xattr_writer.h"
+#include "sqfs/meta_writer.h"
+#include "sqfs/frag_table.h"
+#include "sqfs/dir_writer.h"
+#include "sqfs/compressor.h"
+#include "sqfs/id_table.h"
+#include "sqfs/error.h"
+#include "sqfs/io.h"
+
+#include "fstree.h"
+
+typedef struct {
+	const char *filename;
+	sqfs_block_writer_t *blkwr;
+	sqfs_frag_table_t *fragtbl;
+	sqfs_block_processor_t *data;
+	sqfs_dir_writer_t *dirwr;
+	sqfs_meta_writer_t *dm;
+	sqfs_meta_writer_t *im;
+	sqfs_compressor_t *cmp;
+	sqfs_id_table_t *idtbl;
+	sqfs_file_t *outfile;
+	sqfs_super_t super;
+	fstree_t fs;
+	sqfs_xattr_writer_t *xwr;
+} sqfs_writer_t;
+
+typedef struct {
+	const char *filename;
+	char *fs_defaults;
+	char *comp_extra;
+	size_t block_size;
+	size_t devblksize;
+	size_t max_backlog;
+	size_t num_jobs;
+
+	int outmode;
+	SQFS_COMPRESSOR comp_id;
+
+	bool exportable;
+	bool no_xattr;
+	bool quiet;
+} sqfs_writer_cfg_t;
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+void sqfs_writer_cfg_init(sqfs_writer_cfg_t *cfg);
+
+int sqfs_writer_init(sqfs_writer_t *sqfs, const sqfs_writer_cfg_t *wrcfg);
+
+int sqfs_writer_finish(sqfs_writer_t *sqfs, const sqfs_writer_cfg_t *cfg);
+
+void sqfs_writer_cleanup(sqfs_writer_t *sqfs, int status);
+
+/*
+  High level helper function to serialize an entire file system tree to
+  a squashfs inode table and directory table. The super block is update
+  accordingly.
+
+  The function internally creates two meta data writers and uses
+  meta_writer_write_inode to serialize the inode table of the fstree.
+
+  Returns 0 on success. Prints error messages to stderr on failure.
+  The filename is used to prefix error messages.
+ */
+int sqfs_serialize_fstree(const char *filename, sqfs_writer_t *wr);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* SIMPLE_WRITER_H */