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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/uncompress/bzip2.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/uncompress/bzip2.c')
-rw-r--r--lib/fstream/uncompress/bzip2.c118
1 files changed, 0 insertions, 118 deletions
diff --git a/lib/fstream/uncompress/bzip2.c b/lib/fstream/uncompress/bzip2.c
deleted file mode 100644
index 3b44383..0000000
--- a/lib/fstream/uncompress/bzip2.c
+++ /dev/null
@@ -1,118 +0,0 @@
-/* SPDX-License-Identifier: GPL-3.0-or-later */
-/*
- * bzip2.c
- *
- * Copyright (C) 2019 David Oberhollenzer <goliath@infraroot.at>
- */
-#include "../internal.h"
-
-#include <bzlib.h>
-
-typedef struct {
- istream_comp_t base;
-
- bool initialized;
- bz_stream strm;
-} istream_bzip2_t;
-
-static int precache(istream_t *base)
-{
- istream_bzip2_t *bzip2 = (istream_bzip2_t *)base;
- istream_t *wrapped = ((istream_comp_t *)base)->wrapped;
- size_t avail;
- int ret;
-
- for (;;) {
- if (!bzip2->initialized) {
- if (BZ2_bzDecompressInit(&bzip2->strm, 0, 0) != BZ_OK) {
- fprintf(stderr, "%s: error initializing "
- "bzip2 decompressor.\n",
- wrapped->get_filename(wrapped));
- return -1;
- }
-
- bzip2->initialized = true;
- }
-
- ret = istream_precache(wrapped);
- if (ret != 0)
- return ret;
-
- avail = wrapped->buffer_used;
- if ((sizeof(size_t) > sizeof(unsigned int)) &&
- (avail > (size_t)UINT_MAX)) {
- avail = UINT_MAX;
- }
-
- bzip2->strm.next_in = (char *)wrapped->buffer;
- bzip2->strm.avail_in = (unsigned int)avail;
-
- if (base->buffer_used > BUFSZ)
- base->buffer_used = BUFSZ;
-
- avail = BUFSZ - base->buffer_used;
-
- if ((sizeof(size_t) > sizeof(unsigned int)) &&
- (avail > (size_t)UINT_MAX)) {
- avail = UINT_MAX;
- }
-
- bzip2->strm.next_out = (char *)base->buffer + base->buffer_used;
- bzip2->strm.avail_out = (unsigned int)avail;
-
- if (bzip2->strm.avail_out < 1)
- break;
-
- ret = BZ2_bzDecompress(&bzip2->strm);
-
- if (ret < 0) {
- fprintf(stderr, "%s: internal error in bzip2 "
- "decompressor.\n",
- wrapped->get_filename(wrapped));
- return -1;
- }
-
- base->buffer_used = BUFSZ - bzip2->strm.avail_out;
- wrapped->buffer_offset = wrapped->buffer_used -
- bzip2->strm.avail_in;
-
- if (ret == BZ_STREAM_END) {
- if (istream_precache(wrapped))
- return -1;
-
- BZ2_bzDecompressEnd(&bzip2->strm);
- bzip2->initialized = false;
-
- if (wrapped->buffer_used == 0) {
- base->eof = true;
- break;
- }
- }
- }
-
- return 0;
-}
-
-static void cleanup(istream_comp_t *base)
-{
- istream_bzip2_t *bzip2 = (istream_bzip2_t *)base;
-
- if (bzip2->initialized)
- BZ2_bzDecompressEnd(&bzip2->strm);
-}
-
-istream_comp_t *istream_bzip2_create(const char *filename)
-{
- istream_bzip2_t *bzip2 = calloc(1, sizeof(*bzip2));
- istream_comp_t *base = (istream_comp_t *)bzip2;
-
- if (bzip2 == NULL) {
- fprintf(stderr, "%s: creating bzip2 compressor: %s.\n",
- filename, strerror(errno));
- return NULL;
- }
-
- ((istream_t *)base)->precache = precache;
- base->cleanup = cleanup;
- return base;
-}