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authorDavid Oberhollenzer <david.oberhollenzer@sigma-star.at>2022-06-26 22:51:27 +0200
committerDavid Oberhollenzer <david.oberhollenzer@sigma-star.at>2022-07-08 19:17:35 +0200
commit359d71e90050a8b83f7bc7d2ecd4ff29c477cc22 (patch)
treedf2b7a585b78e6776446d4ca9be62a22db27f0a7 /lib/fstream/istream.c
parent2087cc237cd0fe1ed29ebf891648bacb46f4833b (diff)
Cleanup: rename libfstream to libio, split headers
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
Diffstat (limited to 'lib/fstream/istream.c')
-rw-r--r--lib/fstream/istream.c91
1 files changed, 0 insertions, 91 deletions
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 <goliath@infraroot.at>
- */
-#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;
-}