From 359d71e90050a8b83f7bc7d2ecd4ff29c477cc22 Mon Sep 17 00:00:00 2001 From: David Oberhollenzer Date: Sun, 26 Jun 2022 22:51:27 +0200 Subject: Cleanup: rename libfstream to libio, split headers Signed-off-by: David Oberhollenzer --- lib/fstream/istream.c | 91 --------------------------------------------------- 1 file changed, 91 deletions(-) delete mode 100644 lib/fstream/istream.c (limited to 'lib/fstream/istream.c') diff --git a/lib/fstream/istream.c b/lib/fstream/istream.c deleted file mode 100644 index 6318a23..0000000 --- a/lib/fstream/istream.c +++ /dev/null @@ -1,91 +0,0 @@ -/* SPDX-License-Identifier: GPL-3.0-or-later */ -/* - * istream.c - * - * Copyright (C) 2019 David Oberhollenzer - */ -#include "internal.h" - - -sqfs_s32 istream_read(istream_t *strm, void *data, size_t size) -{ - sqfs_s32 total = 0; - size_t diff; - - if (size > 0x7FFFFFFF) - size = 0x7FFFFFFF; - - while (size > 0) { - if (strm->buffer_offset >= strm->buffer_used) { - if (istream_precache(strm)) - return -1; - - if (strm->buffer_used == 0) - break; - } - - diff = strm->buffer_used - strm->buffer_offset; - if (diff > size) - diff = size; - - memcpy(data, strm->buffer + strm->buffer_offset, diff); - data = (char *)data + diff; - strm->buffer_offset += diff; - size -= diff; - total += diff; - } - - return total; -} - -int istream_precache(istream_t *strm) -{ - if (strm->buffer_offset >= strm->buffer_used) { - strm->buffer_offset = 0; - strm->buffer_used = 0; - } else if (strm->buffer_offset > 0) { - memmove(strm->buffer, - strm->buffer + strm->buffer_offset, - strm->buffer_used - strm->buffer_offset); - - strm->buffer_used -= strm->buffer_offset; - strm->buffer_offset = 0; - } - - if (strm->eof) - return 0; - - return strm->precache(strm); -} - -const char *istream_get_filename(istream_t *strm) -{ - return strm->get_filename(strm); -} - -int istream_skip(istream_t *strm, sqfs_u64 size) -{ - size_t diff; - - while (size > 0) { - if (strm->buffer_offset >= strm->buffer_used) { - if (istream_precache(strm)) - return -1; - - if (strm->buffer_used == 0) { - fprintf(stderr, "%s: unexpected end-of-file\n", - strm->get_filename(strm)); - return -1; - } - } - - diff = strm->buffer_used - strm->buffer_offset; - if ((sqfs_u64)diff > size) - diff = size; - - strm->buffer_offset += diff; - size -= diff; - } - - return 0; -} -- cgit v1.2.3