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Add PathView.cpp.

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GitOrigin-RevId: e6dec7b3a5d663e9390bcfafdf6ebd8e74d5ea9c
This commit is contained in:
levlam 2019-11-26 21:13:38 +03:00
parent 12cd507909
commit 522dcb03b5
3 changed files with 42 additions and 43 deletions
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1
tdutils/CMakeLists.txt
View File

@ -99,6 +99,7 @@ set(TDUTILS_SOURCE
td/utils/MimeType.cpp
td/utils/MpmcQueue.cpp
td/utils/OptionsParser.cpp
td/utils/PathView.cpp
td/utils/Random.cpp
td/utils/SharedSlice.cpp
td/utils/Slice.cpp

39
tdutils/td/utils/PathView.cpp Normal file
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@ -0,0 +1,39 @@
//
// 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

45
tdutils/td/utils/PathView.h
View File

@ -6,27 +6,13 @@
//
#pragma once
#include "td/utils/misc.h"
#include "td/utils/Slice.h"
namespace td {
class PathView {
public:
explicit 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;
}
}
}
explicit PathView(Slice path);
bool empty() const {
return path_.empty();
@ -74,34 +60,7 @@ class PathView {
return !is_absolute();
}
static Slice relative(Slice path, Slice dir, bool force = false) {
if (begins_with(path, dir)) {
path.remove_prefix(dir.size());
return path;
}
if (force) {
return Slice();
}
return path;
}
static Slice 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);
}
static Slice relative(Slice path, Slice dir, bool force = false);
private:
static bool is_slash(char c) {