tdlight/tdutils/td/utils/PathView.cpp
levlam 522dcb03b5 Add PathView.cpp.
GitOrigin-RevId: e6dec7b3a5d663e9390bcfafdf6ebd8e74d5ea9c
2019-11-26 21:13:38 +03:00

40 lines
930 B
C++

//
// Copyright Aliaksei Levin (levlam@telegram.org), Arseny Smirnov (arseny30@gmail.com) 2014-2019
//
// Distributed under the Boost Software License, Version 1.0. (See accompanying
// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
//
#include "td/utils/PathView.h"
#include "td/utils/misc.h"
namespace td {
PathView::PathView(Slice path) : path_(path) {
last_slash_ = narrow_cast<int32>(path_.size()) - 1;
while (last_slash_ >= 0 && !is_slash(path_[last_slash_])) {
last_slash_--;
}
last_dot_ = static_cast<int32>(path_.size());
for (auto i = last_dot_ - 1; i > last_slash_ + 1; i--) {
if (path_[i] == '.') {
last_dot_ = i;
break;
}
}
}
Slice PathView::relative(Slice path, Slice dir, bool force) {
if (begins_with(path, dir)) {
path.remove_prefix(dir.size());
return path;
}
if (force) {
return Slice();
}
return path;
}
} // namespace td