| 1 | //===--- Path.cpp -------------------------------------------*- C++-*------===// |
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| 2 | // |
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| 3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
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| 4 | // See https://llvm.org/LICENSE.txt for license information. |
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| 5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
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| 6 | // |
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| 7 | //===----------------------------------------------------------------------===// |
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| 8 | |
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| 9 | #include "support/Path.h" |
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| 10 | #include "llvm/Support/Path.h" |
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| 11 | namespace clang { |
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| 12 | namespace clangd { |
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| 13 | |
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| 14 | #ifdef CLANGD_PATH_CASE_INSENSITIVE |
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| 15 | std::string maybeCaseFoldPath(PathRef Path) { return Path.lower(); } |
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| 16 | bool pathEqual(PathRef A, PathRef B) { return A.equals_insensitive(B); } |
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| 17 | #else // NOT CLANGD_PATH_CASE_INSENSITIVE |
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| 18 | std::string maybeCaseFoldPath(PathRef Path) { return Path.str(); } |
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| 19 | bool pathEqual(PathRef A, PathRef B) { return A == B; } |
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| 20 | #endif // CLANGD_PATH_CASE_INSENSITIVE |
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| 21 | |
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| 22 | PathRef absoluteParent(PathRef Path) { |
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| 23 | assert(llvm::sys::path::is_absolute(Path)); |
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| 24 | #if defined(_WIN32) |
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| 25 | // llvm::sys says "C:\" is absolute, and its parent is "C:" which is relative. |
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| 26 | // This unhelpful behavior seems to have been inherited from boost. |
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| 27 | if (llvm::sys::path::relative_path(Path).empty()) { |
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| 28 | return PathRef(); |
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| 29 | } |
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| 30 | #endif |
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| 31 | PathRef Result = llvm::sys::path::parent_path(path: Path); |
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| 32 | assert(Result.empty() || llvm::sys::path::is_absolute(Result)); |
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| 33 | return Result; |
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| 34 | } |
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| 35 | |
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| 36 | bool pathStartsWith(PathRef Ancestor, PathRef Path, |
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| 37 | llvm::sys::path::Style Style) { |
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| 38 | assert(llvm::sys::path::is_absolute(Ancestor) && |
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| 39 | llvm::sys::path::is_absolute(Path)); |
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| 40 | // If ancestor ends with a separator drop that, so that we can match /foo/ as |
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| 41 | // a parent of /foo. |
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| 42 | if (llvm::sys::path::is_separator(value: Ancestor.back(), style: Style)) |
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| 43 | Ancestor = Ancestor.drop_back(); |
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| 44 | // Ensure Path starts with Ancestor. |
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| 45 | if (!pathEqual(A: Ancestor, B: Path.take_front(N: Ancestor.size()))) |
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| 46 | return false; |
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| 47 | Path = Path.drop_front(N: Ancestor.size()); |
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| 48 | // Then make sure either two paths are equal or Path has a separator |
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| 49 | // afterwards. |
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| 50 | return Path.empty() || llvm::sys::path::is_separator(value: Path.front(), style: Style); |
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| 51 | } |
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| 52 | } // namespace clangd |
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| 53 | } // namespace clang |
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| 54 | |
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