/*************************************************************************/ /* zip_io.cpp */ /*************************************************************************/ /* This file is part of: */ /* PANDEMONIUM ENGINE */ /* https://github.com/Relintai/pandemonium_engine */ /*************************************************************************/ /* Copyright (c) 2022-present Péter Magyar. */ /* Copyright (c) 2014-2022 Godot Engine contributors (cf. AUTHORS.md). */ /* Copyright (c) 2007-2022 Juan Linietsky, Ariel Manzur. */ /* */ /* 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; }