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Diffstat (limited to 'lib/fstream/uncompress/gzip.c')
-rw-r--r--lib/fstream/uncompress/gzip.c106
1 files changed, 0 insertions, 106 deletions
diff --git a/lib/fstream/uncompress/gzip.c b/lib/fstream/uncompress/gzip.c
deleted file mode 100644
index 1d6274c..0000000
--- a/lib/fstream/uncompress/gzip.c
+++ /dev/null
@@ -1,106 +0,0 @@
-/* SPDX-License-Identifier: GPL-3.0-or-later */
-/*
- * gzip.c
- *
- * Copyright (C) 2019 David Oberhollenzer <goliath@infraroot.at>
- */
-#include "../internal.h"
-
-#include <zlib.h>
-
-typedef struct {
- istream_comp_t base;
-
- z_stream strm;
-} istream_gzip_t;
-
-static int precache(istream_t *base)
-{
- istream_t *wrapped = ((istream_comp_t *)base)->wrapped;
- istream_gzip_t *gzip = (istream_gzip_t *)base;
- size_t avail_in, avail_out;
- int ret;
-
- for (;;) {
- ret = istream_precache(wrapped);
- if (ret != 0)
- return ret;
-
- avail_in = wrapped->buffer_used;
- avail_out = BUFSZ - base->buffer_used;
-
- if (sizeof(size_t) > sizeof(uInt)) {
- gzip->strm.avail_in = ~((uInt)0U);
- gzip->strm.avail_out = ~((uInt)0U);
-
- if ((size_t)gzip->strm.avail_in > avail_in)
- gzip->strm.avail_in = (uInt)avail_in;
-
- if ((size_t)gzip->strm.avail_out > avail_out)
- gzip->strm.avail_out = (uInt)avail_out;
- } else {
- gzip->strm.avail_in = (uInt)avail_in;
- gzip->strm.avail_out = (uInt)avail_out;
- }
-
- gzip->strm.next_in = wrapped->buffer;
- gzip->strm.next_out = base->buffer + base->buffer_used;
-
- ret = inflate(&gzip->strm, Z_NO_FLUSH);
-
- wrapped->buffer_offset = wrapped->buffer_used -
- gzip->strm.avail_in;
-
- base->buffer_used = BUFSZ - gzip->strm.avail_out;
-
- if (ret == Z_BUF_ERROR)
- break;
-
- if (ret == Z_STREAM_END) {
- base->eof = true;
- break;
- }
-
- if (ret != Z_OK) {
- fprintf(stderr,
- "%s: internal error in gzip decoder.\n",
- wrapped->get_filename(wrapped));
- return -1;
- }
- }
-
- return 0;
-}
-
-static void cleanup(istream_comp_t *base)
-{
- istream_gzip_t *gzip = (istream_gzip_t *)base;
-
- inflateEnd(&gzip->strm);
-}
-
-istream_comp_t *istream_gzip_create(const char *filename)
-{
- istream_gzip_t *gzip = calloc(1, sizeof(*gzip));
- istream_comp_t *base = (istream_comp_t *)gzip;
- int ret;
-
- if (gzip == NULL) {
- fprintf(stderr, "%s: creating gzip decoder: %s.\n",
- filename, strerror(errno));
- return NULL;
- }
-
- ret = inflateInit2(&gzip->strm, 16 + 15);
- if (ret != Z_OK) {
- fprintf(stderr,
- "%s: internal error creating gzip reader.\n",
- filename);
- free(gzip);
- return NULL;
- }
-
- ((istream_t *)base)->precache = precache;
- base->cleanup = cleanup;
- return base;
-}