pow-testgiver support

tdutils/td/utils/PathView.cpp

@@ -0,0 +1,70 @@
+/*
+    This file is part of TON Blockchain Library.
+
+    TON Blockchain Library is free software: you can redistribute it and/or modify
+    it under the terms of the GNU Lesser General Public License as published by
+    the Free Software Foundation, either version 2 of the License, or
+    (at your option) any later version.
+
+    TON Blockchain Library is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU Lesser General Public License for more details.
+
+    You should have received a copy of the GNU Lesser General Public License
+    along with TON Blockchain Library.  If not, see <http://www.gnu.org/licenses/>.
+
+    Copyright 2017-2020 Telegram Systems LLP
+*/
+
+#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;
+}
+
+Slice PathView::dir_and_file(Slice path) {
+  auto last_slash = static_cast<int32>(path.size()) - 1;
+  while (last_slash >= 0 && !is_slash(path[last_slash])) {
+    last_slash--;
+  }
+  if (last_slash < 0) {
+    return Slice();
+  }
+  last_slash--;
+  while (last_slash >= 0 && !is_slash(path[last_slash])) {
+    last_slash--;
+  }
+  if (last_slash < 0) {
+    return Slice();
+  }
+  return path.substr(last_slash + 1);
+}
+
+}  // namespace td