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/*************************************************************************/
/* zip_io.cpp */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2022 Juan Linietsky, Ariel Manzur. */
/* Copyright (c) 2014-2022 Godot Engine contributors (cf. AUTHORS.md). */
/* */
/* Permission is hereby granted, free of charge, to any person obtaining */
/* a copy of this software and associated documentation files (the */
/* "Software"), to deal in the Software without restriction, including */
/* without limitation the rights to use, copy, modify, merge, publish, */
/* distribute, sublicense, and/or sell copies of the Software, and to */
/* permit persons to whom the Software is furnished to do so, subject to */
/* the following conditions: */
/* */
/* The above copyright notice and this permission notice shall be */
/* included in all copies or substantial portions of the Software. */
/* */
/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
/*************************************************************************/
#include "zip_io.h"
void *zipio_open(voidpf opaque, const char *p_fname, int mode) {
ZipIOData *zd = (ZipIOData *)opaque;
String fname;
fname.parse_utf8(p_fname);
if (mode & ZLIB_FILEFUNC_MODE_WRITE) {
zd->f = FileAccess::open(fname, FileAccess::WRITE);
} else {
zd->f = FileAccess::open(fname, FileAccess::READ);
}
if (zd->f.is_null()) {
return nullptr;
}
return opaque;
}
uLong zipio_read(voidpf opaque, voidpf stream, void *buf, uLong size) {
ZipIOData *zd = (ZipIOData *)opaque;
return zd->f->get_buffer((uint8_t *)buf, size);
}
uLong zipio_write(voidpf opaque, voidpf stream, const void *buf, uLong size) {
ZipIOData *zd = (ZipIOData *)opaque;
zd->f->store_buffer((uint8_t *)buf, size);
return size;
}
long zipio_tell(voidpf opaque, voidpf stream) {
ZipIOData *zd = (ZipIOData *)opaque;
return zd->f->get_position();
}
long zipio_seek(voidpf opaque, voidpf stream, uLong offset, int origin) {
ZipIOData *zd = (ZipIOData *)opaque;
uint64_t pos = offset;
switch (origin) {
case ZLIB_FILEFUNC_SEEK_CUR:
pos = zd->f->get_position() + offset;
break;
case ZLIB_FILEFUNC_SEEK_END:
pos = zd->f->get_length() + offset;
break;
default:
break;
}
zd->f->seek(pos);
return 0;
}
int zipio_close(voidpf opaque, voidpf stream) {
ZipIOData *zd = (ZipIOData *)opaque;
memdelete(zd);
return 0;
}
int zipio_testerror(voidpf opaque, voidpf stream) {
ZipIOData *zd = (ZipIOData *)opaque;
return (zd->f.is_valid() && zd->f->get_error() != OK) ? 1 : 0;
}
voidpf zipio_alloc(voidpf opaque, uInt items, uInt size) {
voidpf ptr = memalloc((size_t)items * size);
memset(ptr, 0, items * size);
return ptr;
}
void zipio_free(voidpf opaque, voidpf address) {
memfree(address);
}
zlib_filefunc_def zipio_create_io() {
zlib_filefunc_def io;
io.opaque = (void *)memnew(ZipIOData);
io.zopen_file = zipio_open;
io.zread_file = zipio_read;
io.zwrite_file = zipio_write;
io.ztell_file = zipio_tell;
io.zseek_file = zipio_seek;
io.zclose_file = zipio_close;
io.zerror_file = zipio_testerror;
io.alloc_mem = zipio_alloc;
io.free_mem = zipio_free;
return io;
}
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