ppsspp/Common/File/Path.h
2021-06-07 00:24:52 +02:00

109 lines
2.8 KiB
C++

#pragma once
#include "ppsspp_config.h"
#include <string>
enum class PathType {
UNDEFINED = 0,
NATIVE = 1,
// RELATIVE, // (do we need this?)
CONTENT_URI = 2, // Android only
HTTP = 3, // http://, https://
};
// Windows paths are always stored with '/' slashes in a Path.
// On .ToWString(), they are flipped back to '\'.
class Path {
private:
void Init(const std::string &str);
public:
Path() : type_(PathType::UNDEFINED) {}
explicit Path(const std::string &str);
#if PPSSPP_PLATFORM(WINDOWS)
explicit Path(const std::wstring &str);
#endif
PathType Type() const {
return type_;
}
bool Valid() const { return !path_.empty(); }
bool IsRoot() const { return path_ == "/"; } // Special value - only path that can end in a slash.
// Some std::string emulation for simplicity.
bool empty() const { return !Valid(); }
void clear() {
type_ = PathType::UNDEFINED;
path_.clear();
}
size_t size() const {
return path_.size();
}
// WARNING: Potentially unsafe usage, if it's not NATIVE.
const char *c_str() const {
return path_.c_str();
}
bool IsAbsolute() const;
// Returns a path extended with a subdirectory.
Path operator /(const std::string &subdir) const;
// Navigates down into a subdir.
void operator /=(const std::string &subdir);
// File extension manipulation.
Path WithExtraExtension(const std::string &ext) const;
Path WithReplacedExtension(const std::string &oldExtension, const std::string &newExtension) const;
Path WithReplacedExtension(const std::string &newExtension) const;
// Removes the last component.
std::string GetFilename() const; // Really, GetLastComponent. Could be a file or directory. Includes the extension.
std::string GetFileExtension() const; // Always lowercase return. Includes the dot.
std::string GetDirectory() const;
const std::string &ToString() const;
#if PPSSPP_PLATFORM(WINDOWS)
std::wstring ToWString() const;
#endif
std::string ToVisualString() const;
bool CanNavigateUp() const;
Path NavigateUp() const;
Path GetRootVolume() const; // Navigates as far up as possible on the current volume, whatever that is. If not possible, returns the same path.
std::string PathTo(const Path &child);
bool operator ==(const Path &other) const {
return path_ == other.path_ && type_ == other.type_;
}
bool operator !=(const Path &other) const {
return path_ != other.path_ || type_ != other.type_;
}
bool FilePathContains(const std::string &needle) const;
bool StartsWith(const Path &other) const;
bool operator <(const Path &other) const {
return path_ < other.path_;
}
private:
// The internal representation is currently always the plain string.
// For CPU efficiency we could keep an AndroidStorageContentURI too,
// but I don't think the encode/decode cost is significant. We simply create
// those for processing instead.
std::string path_;
PathType type_;
};