/*************************************************************************/ /* file_access_memory.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 "file_access_memory.h" #include "core/config/project_settings.h" #include "core/io/dir_access.h" #include "core/templates/rb_map.h" static HashMap<String, Vector<uint8_t>> *files = nullptr; void FileAccessMemory::register_file(String p_name, Vector<uint8_t> p_data) { if (!files) { files = memnew((HashMap<String, Vector<uint8_t>>)); } String name; if (ProjectSettings::get_singleton()) { name = ProjectSettings::get_singleton()->globalize_path(p_name); } else { name = p_name; } //name = DirAccess::normalize_path(name); (*files)[name] = p_data; } void FileAccessMemory::cleanup() { if (!files) { return; } memdelete(files); } Ref<FileAccess> FileAccessMemory::create() { return memnew(FileAccessMemory); } bool FileAccessMemory::file_exists(const String &p_name) { String name = fix_path(p_name); //name = DirAccess::normalize_path(name); return files && (files->find(name) != nullptr); } Error FileAccessMemory::open_custom(const uint8_t *p_data, uint64_t p_len) { data = (uint8_t *)p_data; length = p_len; pos = 0; return OK; } Error FileAccessMemory::_open(const String &p_path, int p_mode_flags) { ERR_FAIL_COND_V(!files, ERR_FILE_NOT_FOUND); String name = fix_path(p_path); //name = DirAccess::normalize_path(name); HashMap<String, Vector<uint8_t>>::Iterator E = files->find(name); ERR_FAIL_COND_V_MSG(!E, ERR_FILE_NOT_FOUND, "Can't find file '" + p_path + "'."); data = E->value.ptrw(); length = E->value.size(); pos = 0; return OK; } bool FileAccessMemory::is_open() const { return data != nullptr; } void FileAccessMemory::seek(uint64_t p_position) { ERR_FAIL_COND(!data); pos = p_position; } void FileAccessMemory::seek_end(int64_t p_position) { ERR_FAIL_COND(!data); pos = length + p_position; } uint64_t FileAccessMemory::get_position() const { ERR_FAIL_COND_V(!data, 0); return pos; } uint64_t FileAccessMemory::get_length() const { ERR_FAIL_COND_V(!data, 0); return length; } bool FileAccessMemory::eof_reached() const { return pos > length; } uint8_t FileAccessMemory::get_8() const { uint8_t ret = 0; if (pos < length) { ret = data[pos]; } ++pos; return ret; } uint64_t FileAccessMemory::get_buffer(uint8_t *p_dst, uint64_t p_length) const { ERR_FAIL_COND_V(!p_dst && p_length > 0, -1); ERR_FAIL_COND_V(!data, -1); uint64_t left = length - pos; uint64_t read = MIN(p_length, left); if (read < p_length) { WARN_PRINT("Reading less data than requested"); } memcpy(p_dst, &data[pos], read); pos += p_length; return read; } Error FileAccessMemory::get_error() const { return pos >= length ? ERR_FILE_EOF : OK; } void FileAccessMemory::flush() { ERR_FAIL_COND(!data); } void FileAccessMemory::store_8(uint8_t p_byte) { ERR_FAIL_COND(!data); ERR_FAIL_COND(pos >= length); data[pos++] = p_byte; } void FileAccessMemory::store_buffer(const uint8_t *p_src, uint64_t p_length) { ERR_FAIL_COND(!p_src && p_length > 0); uint64_t left = length - pos; uint64_t write = MIN(p_length, left); if (write < p_length) { WARN_PRINT("Writing less data than requested"); } memcpy(&data[pos], p_src, write); pos += p_length; }