Lime3DS/src/core/file_sys/path_parser.cpp
GPUCode 06f3c90cfb
Custom textures rewrite (#6452)
* common: Add thread pool from yuzu

* Is really useful for asynchronous operations like shader compilation and custom textures, will be used in following PRs

* core: Improve ImageInterface

* Provide a default implementation so frontends don't have to duplicate code registering the lodepng version

* Add a dds version too which we will use in the next commit

* rasterizer_cache: Rewrite custom textures

* There's just too much to talk about here, look at the PR description for more details

* rasterizer_cache: Implement basic pack configuration file

* custom_tex_manager: Flip dumped textures

* custom_tex_manager: Optimize custom texture hashing

* If no convertions are needed then we can hash the decoded data directly removing the needed for duplicate decode

* custom_tex_manager: Implement asynchronous texture loading

* The file loading and decoding is offloaded into worker threads, while the upload itself still occurs in the main thread to avoid having to manage shared contexts

* Address review comments

* custom_tex_manager: Introduce custom material support

* video_core: Move custom textures to separate directory

* Also split the files to make the code cleaner

* gl_texture_runtime: Generate mipmaps for material

* custom_tex_manager: Prevent memory overflow when preloading

* externals: Add dds-ktx as submodule

* string_util: Return vector from SplitString

* No code benefits from passing it as an argument

* custom_textures: Use json config file

* gl_rasterizer: Only bind material for unit 0

* Address review comments
2023-04-27 07:38:28 +03:00

99 lines
2.7 KiB
C++

// Copyright 2016 Citra Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#include <algorithm>
#include <set>
#include "common/file_util.h"
#include "common/string_util.h"
#include "core/file_sys/path_parser.h"
namespace FileSys {
PathParser::PathParser(const Path& path) {
if (path.GetType() != LowPathType::Char && path.GetType() != LowPathType::Wchar) {
is_valid = false;
return;
}
auto path_string = path.AsString();
if (path_string.size() == 0 || path_string[0] != '/') {
is_valid = false;
return;
}
// Filter out invalid characters for the host system.
// Although some of these characters are valid on 3DS, they are unlikely to be used by games.
if (std::find_if(path_string.begin(), path_string.end(), [](char c) {
static const std::set<char> invalid_chars{'<', '>', '\\', '|', ':', '\"', '*', '?'};
return invalid_chars.find(c) != invalid_chars.end();
}) != path_string.end()) {
is_valid = false;
return;
}
path_sequence = Common::SplitString(path_string, '/');
auto begin = path_sequence.begin();
auto end = path_sequence.end();
end = std::remove_if(begin, end, [](std::string& str) { return str == "" || str == "."; });
path_sequence = std::vector<std::string>(begin, end);
// checks if the path is out of bounds.
int level = 0;
for (auto& node : path_sequence) {
if (node == "..") {
--level;
if (level < 0) {
is_valid = false;
return;
}
} else {
++level;
}
}
is_valid = true;
is_root = level == 0;
}
PathParser::HostStatus PathParser::GetHostStatus(std::string_view mount_point) const {
std::string path{mount_point};
if (!FileUtil::IsDirectory(path))
return InvalidMountPoint;
if (path_sequence.empty()) {
return DirectoryFound;
}
for (auto iter = path_sequence.begin(); iter != path_sequence.end() - 1; iter++) {
if (path.back() != '/')
path += '/';
path += *iter;
if (!FileUtil::Exists(path))
return PathNotFound;
if (FileUtil::IsDirectory(path))
continue;
return FileInPath;
}
path += "/" + path_sequence.back();
if (!FileUtil::Exists(path))
return NotFound;
if (FileUtil::IsDirectory(path))
return DirectoryFound;
return FileFound;
}
std::string PathParser::BuildHostPath(std::string_view mount_point) const {
std::string path{mount_point};
for (auto& node : path_sequence) {
if (path.back() != '/')
path += '/';
path += node;
}
return path;
}
} // namespace FileSys