forked from OSchip/llvm-project
54 lines
2.1 KiB
C++
54 lines
2.1 KiB
C++
//===--- Path.cpp -------------------------------------------*- C++-*------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#include "support/Path.h"
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#include "llvm/Support/Path.h"
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namespace clang {
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namespace clangd {
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#ifdef CLANGD_PATH_CASE_INSENSITIVE
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std::string maybeCaseFoldPath(PathRef Path) { return Path.lower(); }
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bool pathEqual(PathRef A, PathRef B) { return A.equals_lower(B); }
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#else // NOT CLANGD_PATH_CASE_INSENSITIVE
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std::string maybeCaseFoldPath(PathRef Path) { return Path.str(); }
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bool pathEqual(PathRef A, PathRef B) { return A == B; }
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#endif // CLANGD_PATH_CASE_INSENSITIVE
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PathRef absoluteParent(PathRef Path) {
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assert(llvm::sys::path::is_absolute(Path));
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#if defined(_WIN32)
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// llvm::sys says "C:\" is absolute, and its parent is "C:" which is relative.
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// This unhelpful behavior seems to have been inherited from boost.
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if (llvm::sys::path::relative_path(Path).empty()) {
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return PathRef();
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}
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#endif
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PathRef Result = llvm::sys::path::parent_path(Path);
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assert(Result.empty() || llvm::sys::path::is_absolute(Result));
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return Result;
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}
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bool pathStartsWith(PathRef Ancestor, PathRef Path,
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llvm::sys::path::Style Style) {
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assert(llvm::sys::path::is_absolute(Ancestor) &&
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llvm::sys::path::is_absolute(Path));
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// If ancestor ends with a separator drop that, so that we can match /foo/ as
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// a parent of /foo.
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if (llvm::sys::path::is_separator(Ancestor.back(), Style))
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Ancestor = Ancestor.drop_back();
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// Ensure Path starts with Ancestor.
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if (!pathEqual(Ancestor, Path.take_front(Ancestor.size())))
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return false;
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Path = Path.drop_front(Ancestor.size());
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// Then make sure either two paths are equal or Path has a separator
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// afterwards.
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return Path.empty() || llvm::sys::path::is_separator(Path.front(), Style);
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}
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} // namespace clangd
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} // namespace clang
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