c1bc70b711
A lot of files were missing copyright field in the header and
the Blender Foundation contributed to them in a sense of bug
fixing and general maintenance.
This change makes it explicit that those files are at least
partially copyrighted by the Blender Foundation.
Note that this does not make it so the Blender Foundation is
the only holder of the copyright in those files, and developers
who do not have a signed contract with the foundation still
hold the copyright as well.
Another aspect of this change is using SPDX format for the
header. We already used it for the license specification,
and now we state it for the copyright as well, following the
FAQ:
https://reuse.software/faq/
94 lines
2.0 KiB
C
94 lines
2.0 KiB
C
/* SPDX-FileCopyrightText: 2004-2021 Blender Foundation
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*
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* SPDX-License-Identifier: GPL-2.0-or-later */
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/** \file
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* \ingroup bli
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*/
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#include <zlib.h>
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#include "BLI_blenlib.h"
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#include "BLI_filereader.h"
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#include "MEM_guardedalloc.h"
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typedef struct {
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FileReader reader;
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FileReader *base;
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z_stream strm;
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void *in_buf;
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size_t in_size;
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} GzipReader;
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static ssize_t gzip_read(FileReader *reader, void *buffer, size_t size)
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{
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GzipReader *gzip = (GzipReader *)reader;
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gzip->strm.avail_out = size;
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gzip->strm.next_out = buffer;
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while (gzip->strm.avail_out > 0) {
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if (gzip->strm.avail_in == 0) {
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/* Ran out of buffered input data, read some more. */
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size_t readsize = gzip->base->read(gzip->base, gzip->in_buf, gzip->in_size);
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if (readsize > 0) {
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/* We got some data, so mark the buffer as refilled. */
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gzip->strm.avail_in = readsize;
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gzip->strm.next_in = gzip->in_buf;
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}
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else {
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/* The underlying file is EOF, so return as much as we can. */
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break;
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}
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}
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int ret = inflate(&gzip->strm, Z_NO_FLUSH);
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if (!ELEM(ret, Z_OK, Z_BUF_ERROR)) {
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break;
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}
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}
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ssize_t read_len = size - gzip->strm.avail_out;
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gzip->reader.offset += read_len;
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return read_len;
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}
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static void gzip_close(FileReader *reader)
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{
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GzipReader *gzip = (GzipReader *)reader;
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if (inflateEnd(&gzip->strm) != Z_OK) {
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printf("close gzip stream error\n");
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}
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MEM_freeN((void *)gzip->in_buf);
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gzip->base->close(gzip->base);
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MEM_freeN(gzip);
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}
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FileReader *BLI_filereader_new_gzip(FileReader *base)
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{
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GzipReader *gzip = MEM_callocN(sizeof(GzipReader), __func__);
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gzip->base = base;
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if (inflateInit2(&gzip->strm, 16 + MAX_WBITS) != Z_OK) {
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MEM_freeN(gzip);
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return NULL;
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}
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gzip->in_size = 256 * 2014;
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gzip->in_buf = MEM_mallocN(gzip->in_size, "gzip in buf");
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gzip->reader.read = gzip_read;
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gzip->reader.seek = NULL;
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gzip->reader.close = gzip_close;
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return (FileReader *)gzip;
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}
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