Migrate file istream/ostream from libio to libsquashfs

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

1 files changed, 0 insertions, 190 deletions

diff --git a/lib/io/src/win32/ostream.c b/lib/io/src/win32/ostream.c
deleted file mode 100644
index b7f0e06..0000000
--- a/lib/io/src/win32/ostream.c
+++ /dev/null
@@ -1,190 +0,0 @@
-/* SPDX-License-Identifier: GPL-3.0-or-later */
-/*
- * ostream.c
- *
- * Copyright (C) 2019 David Oberhollenzer <goliath@infraroot.at>
- */
-#include "../internal.h"
-#include "sqfs/io.h"
-#include "sqfs/error.h"
-
-#define WIN32_LEAN_AND_MEAN
-#include <windows.h>
-
-typedef struct {
-	sqfs_ostream_t base;
-	sqfs_u64 sparse_count;
-	char *path;
-	HANDLE hnd;
-	int flags;
-} file_ostream_t;
-
-static int write_data(file_ostream_t *file, const void *data, size_t size)
-{
-	DWORD diff;
-
-	while (size > 0) {
-		if (!WriteFile(file->hnd, data, size, &diff, NULL))
-			return SQFS_ERROR_IO;
-
-		size -= diff;
-		data = (const char *)data + diff;
-	}
-
-	return 0;
-}
-
-static int realize_sparse(file_ostream_t *file)
-{
-	size_t bufsz, diff;
-	LARGE_INTEGER pos;
-	void *buffer;
-	int ret;
-
-	if (file->sparse_count == 0)
-		return 0;
-
-	if (file->flags & SQFS_FILE_OPEN_NO_SPARSE) {
-		bufsz = file->sparse_count > 1024 ? 1024 : file->sparse_count;
-		buffer = calloc(1, bufsz);
-
-		if (buffer == NULL)
-			return SQFS_ERROR_ALLOC;
-
-		while (file->sparse_count > 0) {
-			diff = file->sparse_count > bufsz ?
-				bufsz : file->sparse_count;
-
-			ret = write_data(file, buffer, diff);
-			if (ret) {
-				DWORD temp = GetLastError();
-				free(buffer);
-				SetLastError(temp);
-				return ret;
-			}
-
-			file->sparse_count -= diff;
-		}
-
-		free(buffer);
-	} else {
-		pos.QuadPart = file->sparse_count;
-
-		if (!SetFilePointerEx(file->hnd, pos, NULL, FILE_CURRENT))
-			return SQFS_ERROR_IO;
-
-		if (!SetEndOfFile(file->hnd))
-			return SQFS_ERROR_IO;
-
-		file->sparse_count = 0;
-	}
-
-	return 0;
-}
-
-static int file_append(sqfs_ostream_t *strm, const void *data, size_t size)
-{
-	file_ostream_t *file = (file_ostream_t *)strm;
-	int ret;
-
-	if (size == 0 || data == NULL) {
-		file->sparse_count += size;
-		return 0;
-	}
-
-	ret = realize_sparse(file);
-	if (ret)
-		return ret;
-
-	return write_data(file, data, size);
-}
-
-static int file_flush(sqfs_ostream_t *strm)
-{
-	file_ostream_t *file = (file_ostream_t *)strm;
-	int ret;
-
-	ret = realize_sparse(file);
-	if (ret)
-		return ret;
-
-	if (!FlushFileBuffers(file->hnd))
-		return SQFS_ERROR_IO;
-
-	return 0;
-}
-
-static void file_destroy(sqfs_object_t *obj)
-{
-	file_ostream_t *file = (file_ostream_t *)obj;
-
-	CloseHandle(file->hnd);
-	free(file->path);
-	free(file);
-}
-
-static const char *file_get_filename(sqfs_ostream_t *strm)
-{
-	return ((file_ostream_t *)strm)->path;
-}
-
-int ostream_open_handle(sqfs_ostream_t **out, const char *path,
-			sqfs_file_handle_t hnd, int flags)
-{
-	file_ostream_t *file = calloc(1, sizeof(*file));
-	sqfs_ostream_t *strm = (sqfs_ostream_t *)file;
-	BOOL ret;
-
-	if (file == NULL)
-		return SQFS_ERROR_ALLOC;
-
-	sqfs_object_init(file, file_destroy, NULL);
-
-	file->path = strdup(path);
-	if (file->path == NULL) {
-		free(file);
-		return SQFS_ERROR_ALLOC;
-	}
-
-	ret = DuplicateHandle(GetCurrentProcess(), hnd,
-			      GetCurrentProcess(), &file->hnd,
-			      0, FALSE, DUPLICATE_SAME_ACCESS);
-	if (!ret) {
-		DWORD temp = GetLastError();
-		free(file->path);
-		free(file);
-		SetLastError(temp);
-		return SQFS_ERROR_IO;
-	}
-
-	CloseHandle(hnd);
-
-	file->flags = flags;
-	strm->append = file_append;
-	strm->flush = file_flush;
-	strm->get_filename = file_get_filename;
-
-	*out = strm;
-	return 0;
-}
-
-int ostream_open_file(sqfs_ostream_t **out, const char *path, int flags)
-{
-	sqfs_file_handle_t hnd;
-	int ret;
-
-	*out = NULL;
-	ret = sqfs_open_native_file(&hnd, path, flags);
-	if (ret)
-		return ret;
-
-	ret = ostream_open_handle(out, path, hnd, flags);
-	if (ret) {
-		DWORD temp = GetLastError();
-		CloseHandle(hnd);
-		SetLastError(temp);
-		return SQFS_ERROR_IO;
-	}
-
-	return 0;
-}