126 lines
4.2 KiB
C++
126 lines
4.2 KiB
C++
/*************************************************************************/
|
|
/* 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(void *data, const char *p_fname, int mode) {
|
|
FileAccess *&f = *(FileAccess **)data;
|
|
|
|
String fname;
|
|
fname.parse_utf8(p_fname);
|
|
|
|
if (mode & ZLIB_FILEFUNC_MODE_WRITE) {
|
|
f = FileAccess::open(fname, FileAccess::WRITE);
|
|
} else {
|
|
f = FileAccess::open(fname, FileAccess::READ);
|
|
}
|
|
|
|
if (!f) {
|
|
return nullptr;
|
|
}
|
|
|
|
return data;
|
|
}
|
|
|
|
uLong zipio_read(void *data, void *fdata, void *buf, uLong size) {
|
|
FileAccess *f = *(FileAccess **)data;
|
|
return f->get_buffer((uint8_t *)buf, size);
|
|
}
|
|
|
|
uLong zipio_write(voidpf opaque, voidpf stream, const void *buf, uLong size) {
|
|
FileAccess *f = *(FileAccess **)opaque;
|
|
f->store_buffer((uint8_t *)buf, size);
|
|
return size;
|
|
}
|
|
|
|
long zipio_tell(voidpf opaque, voidpf stream) {
|
|
FileAccess *f = *(FileAccess **)opaque;
|
|
return f->get_position();
|
|
}
|
|
|
|
long zipio_seek(voidpf opaque, voidpf stream, uLong offset, int origin) {
|
|
FileAccess *f = *(FileAccess **)opaque;
|
|
|
|
uint64_t pos = offset;
|
|
switch (origin) {
|
|
case ZLIB_FILEFUNC_SEEK_CUR:
|
|
pos = f->get_position() + offset;
|
|
break;
|
|
case ZLIB_FILEFUNC_SEEK_END:
|
|
pos = f->get_len() + offset;
|
|
break;
|
|
default:
|
|
break;
|
|
};
|
|
|
|
f->seek(pos);
|
|
return 0;
|
|
}
|
|
|
|
int zipio_close(voidpf opaque, voidpf stream) {
|
|
FileAccess *&f = *(FileAccess **)opaque;
|
|
if (f) {
|
|
f->close();
|
|
memdelete(f);
|
|
f = nullptr;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
int zipio_testerror(voidpf opaque, voidpf stream) {
|
|
FileAccess *f = *(FileAccess **)opaque;
|
|
return (f && f->get_error() != OK) ? 1 : 0;
|
|
}
|
|
|
|
voidpf zipio_alloc(voidpf opaque, uInt items, uInt size) {
|
|
voidpf ptr = memalloc(items * size);
|
|
memset(ptr, 0, items * size);
|
|
return ptr;
|
|
}
|
|
|
|
void zipio_free(voidpf opaque, voidpf address) {
|
|
memfree(address);
|
|
}
|
|
|
|
zlib_filefunc_def zipio_create_io_from_file(FileAccess **p_file) {
|
|
zlib_filefunc_def io;
|
|
io.opaque = p_file;
|
|
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;
|
|
}
|