137 lines
4.2 KiB
C++
137 lines
4.2 KiB
C++
/*************************************************************************/
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/* zip_io.cpp */
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/*************************************************************************/
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/* This file is part of: */
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/* GODOT ENGINE */
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/* https://godotengine.org */
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/*************************************************************************/
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/* Copyright (c) 2007-2021 Juan Linietsky, Ariel Manzur. */
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/* Copyright (c) 2014-2021 Godot Engine contributors (cf. AUTHORS.md). */
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/* */
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/* Permission is hereby granted, free of charge, to any person obtaining */
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/* a copy of this software and associated documentation files (the */
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/* "Software"), to deal in the Software without restriction, including */
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/* without limitation the rights to use, copy, modify, merge, publish, */
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/* distribute, sublicense, and/or sell copies of the Software, and to */
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/* permit persons to whom the Software is furnished to do so, subject to */
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/* the following conditions: */
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/* */
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/* The above copyright notice and this permission notice shall be */
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/* included in all copies or substantial portions of the Software. */
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/* */
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/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
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/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
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/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
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/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
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/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
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/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
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/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
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/*************************************************************************/
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#include "zip_io.h"
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void *zipio_open(void *data, const char *p_fname, int mode) {
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FileAccess *&f = *(FileAccess **)data;
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String fname;
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fname.parse_utf8(p_fname);
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if (mode & ZLIB_FILEFUNC_MODE_WRITE) {
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f = FileAccess::open(fname, FileAccess::WRITE);
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} else {
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f = FileAccess::open(fname, FileAccess::READ);
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}
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if (!f)
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return NULL;
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return data;
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}
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uLong zipio_read(void *data, void *fdata, void *buf, uLong size) {
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FileAccess *f = *(FileAccess **)data;
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return f->get_buffer((uint8_t *)buf, size);
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}
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uLong zipio_write(voidpf opaque, voidpf stream, const void *buf, uLong size) {
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FileAccess *f = *(FileAccess **)opaque;
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f->store_buffer((uint8_t *)buf, size);
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return size;
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}
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long zipio_tell(voidpf opaque, voidpf stream) {
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FileAccess *f = *(FileAccess **)opaque;
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return f->get_position();
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}
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long zipio_seek(voidpf opaque, voidpf stream, uLong offset, int origin) {
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FileAccess *f = *(FileAccess **)opaque;
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int pos = offset;
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switch (origin) {
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case ZLIB_FILEFUNC_SEEK_CUR:
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pos = f->get_position() + offset;
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break;
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case ZLIB_FILEFUNC_SEEK_END:
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pos = f->get_len() + offset;
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break;
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default:
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break;
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};
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f->seek(pos);
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return 0;
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}
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int zipio_close(voidpf opaque, voidpf stream) {
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FileAccess *&f = *(FileAccess **)opaque;
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if (f) {
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f->close();
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memdelete(f);
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f = NULL;
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}
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return 0;
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}
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int zipio_testerror(voidpf opaque, voidpf stream) {
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FileAccess *f = *(FileAccess **)opaque;
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return (f && f->get_error() != OK) ? 1 : 0;
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}
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voidpf zipio_alloc(voidpf opaque, uInt items, uInt size) {
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voidpf ptr = memalloc(items * size);
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memset(ptr, 0, items * size);
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return ptr;
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}
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void zipio_free(voidpf opaque, voidpf address) {
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memfree(address);
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}
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zlib_filefunc_def zipio_create_io_from_file(FileAccess **p_file) {
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zlib_filefunc_def io;
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io.opaque = p_file;
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io.zopen_file = zipio_open;
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io.zread_file = zipio_read;
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io.zwrite_file = zipio_write;
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io.ztell_file = zipio_tell;
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io.zseek_file = zipio_seek;
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io.zclose_file = zipio_close;
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io.zerror_file = zipio_testerror;
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io.alloc_mem = zipio_alloc;
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io.free_mem = zipio_free;
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return io;
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}
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