73 lines
1.5 KiB
C++
73 lines
1.5 KiB
C++
#include "leveldb/db_path.h"
|
|
|
|
namespace leveldb {
|
|
namespace path {
|
|
|
|
bool DbPath::IsDirectorySeparator(const char c) {
|
|
return (c == DbPath::kDirectorySeparator || c == DbPath::kAltDirecttorySeparator);
|
|
}
|
|
|
|
// Windows
|
|
|
|
bool WindowsDbPath::IsAbsolute() const {
|
|
return path_.size() >= 3 && IsValidDriveChar(path_[0]) &&
|
|
path_[1] == DbPath::kVolumeSeparatorChar;
|
|
};
|
|
|
|
bool WindowsDbPath::IsRelative() const {
|
|
if (path_.size() < 2) {
|
|
return true;
|
|
}
|
|
|
|
if (IsDirectorySeparator(path_[0])) {
|
|
if (path_[1] != '?') {
|
|
return !IsDirectorySeparator(path_[1]);
|
|
}
|
|
return false;
|
|
}
|
|
if (path_.size() >= 3 && path_[1] == DbPath::kVolumeSeparatorChar &&
|
|
IsDirectorySeparator(path_[2])) {
|
|
return IsValidDriveChar(path_[0]);
|
|
}
|
|
return true;
|
|
};
|
|
|
|
void WindowsDbPath::Normalize() {
|
|
auto out = path_.begin();
|
|
|
|
for (const char c : path_) {
|
|
if (!IsDirectorySeparator(c)) {
|
|
*(out++) = c;
|
|
}
|
|
else if (out == path_.begin() || !IsDirectorySeparator(*std::prev(out))) {
|
|
*(out++) = kDirectorySeparator;
|
|
}
|
|
else {
|
|
continue;
|
|
}
|
|
}
|
|
|
|
path_.erase(out, path_.end());
|
|
}
|
|
|
|
bool WindowsDbPath::IsValidDriveChar(const char c) {
|
|
const char drive_char = std::toupper(c);
|
|
return drive_char >= 'A' && drive_char <= 'Z';
|
|
}
|
|
|
|
// Windows path
|
|
|
|
DbPath* PathFactory::Create(const std::string& path) {
|
|
#ifdef LEVELDB_PLATFORM_WINDOWS
|
|
return new WindowsDbPath(path);
|
|
#elif LEVELDB_PLATFORM_POSIX
|
|
return nullptr;
|
|
#endif
|
|
return nullptr;
|
|
}
|
|
|
|
}
|
|
}
|
|
|
|
|