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[VFS] Add "expand tilde" argument to getRealPath.

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Add an optional argument to expand tildes in the path to mirror llvm's
implementation of the corresponding function.

llvm-svn: 346453
This commit is contained in:
Jonas Devlieghere 2018-11-09 00:26:10 +00:00
parent f2727f2785
commit 94677b4b80
3 changed files with 25 additions and 23 deletions
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17
include/llvm/Support/VirtualFileSystem.h
View File

@ -274,7 +274,8 @@ public:
/// symlinks. For real file system, this uses `llvm::sys::fs::real_path`.
/// This returns errc::operation_not_permitted if not implemented by subclass.
virtual std::error_code getRealPath(const Twine &Path,
SmallVectorImpl<char> &Output) const;
SmallVectorImpl<char> &Output,
bool ExpandTilde = false) const;
/// Check whether a file exists. Provided for convenience.
bool exists(const Twine &Path);
@ -330,8 +331,8 @@ public:
llvm::ErrorOr<std::string> getCurrentWorkingDirectory() const override;
std::error_code setCurrentWorkingDirectory(const Twine &Path) override;
std::error_code isLocal(const Twine &Path, bool &Result) override;
std::error_code getRealPath(const Twine &Path,
SmallVectorImpl<char> &Output) const override;
std::error_code getRealPath(const Twine &Path, SmallVectorImpl<char> &Output,
bool ExpandTilde = false) const override;
using iterator = FileSystemList::reverse_iterator;
using const_iterator = FileSystemList::const_reverse_iterator;
@ -370,9 +371,9 @@ public:
std::error_code setCurrentWorkingDirectory(const Twine &Path) override {
return FS->setCurrentWorkingDirectory(Path);
}
std::error_code getRealPath(const Twine &Path,
SmallVectorImpl<char> &Output) const override {
return FS->getRealPath(Path, Output);
std::error_code getRealPath(const Twine &Path, SmallVectorImpl<char> &Output,
bool ExpandTilde = false) const override {
return FS->getRealPath(Path, Output, ExpandTilde);
}
protected:
@ -465,8 +466,8 @@ public:
///
/// This doesn't resolve symlinks as they are not supported in in-memory file
/// system.
std::error_code getRealPath(const Twine &Path,
SmallVectorImpl<char> &Output) const override;
std::error_code getRealPath(const Twine &Path, SmallVectorImpl<char> &Output,
bool ExpandTilde = false) const override;
std::error_code isLocal(const Twine &Path, bool &Result) override;
std::error_code setCurrentWorkingDirectory(const Twine &Path) override;
};

27
lib/Support/VirtualFileSystem.cpp
View File

@ -132,7 +132,8 @@ std::error_code FileSystem::makeAbsolute(SmallVectorImpl<char> &Path) const {
}
std::error_code FileSystem::getRealPath(const Twine &Path,
SmallVectorImpl<char> &Output) const {
SmallVectorImpl<char> &Output,
bool ExpandTilde) const {
return errc::operation_not_permitted;
}
@ -238,8 +239,8 @@ public:
llvm::ErrorOr<std::string> getCurrentWorkingDirectory() const override;
std::error_code setCurrentWorkingDirectory(const Twine &Path) override;
std::error_code isLocal(const Twine &Path, bool &Result) override;
std::error_code getRealPath(const Twine &Path,
SmallVectorImpl<char> &Output) const override;
std::error_code getRealPath(const Twine &Path, SmallVectorImpl<char> &Output,
bool ExpandTilde = false) const override;
private:
mutable std::mutex CWDMutex;
@ -297,9 +298,9 @@ std::error_code RealFileSystem::isLocal(const Twine &Path, bool &Result) {
return llvm::sys::fs::is_local(Path, Result);
}
std::error_code
RealFileSystem::getRealPath(const Twine &Path,
SmallVectorImpl<char> &Output) const {
std::error_code RealFileSystem::getRealPath(const Twine &Path,
SmallVectorImpl<char> &Output,
bool ExpandTilde) const {
return llvm::sys::fs::real_path(Path, Output);
}
@ -393,12 +394,12 @@ std::error_code OverlayFileSystem::isLocal(const Twine &Path, bool &Result) {
return errc::no_such_file_or_directory;
}
std::error_code
OverlayFileSystem::getRealPath(const Twine &Path,
SmallVectorImpl<char> &Output) const {
std::error_code OverlayFileSystem::getRealPath(const Twine &Path,
SmallVectorImpl<char> &Output,
bool ExpandTilde) const {
for (auto &FS : FSList)
if (FS->exists(Path))
return FS->getRealPath(Path, Output);
return FS->getRealPath(Path, Output, ExpandTilde);
return errc::no_such_file_or_directory;
}
@ -916,9 +917,9 @@ std::error_code InMemoryFileSystem::setCurrentWorkingDirectory(const Twine &P) {
return {};
}
std::error_code
InMemoryFileSystem::getRealPath(const Twine &Path,
SmallVectorImpl<char> &Output) const {
std::error_code InMemoryFileSystem::getRealPath(const Twine &Path,
SmallVectorImpl<char> &Output,
bool ExpandTilde) const {
auto CWD = getCurrentWorkingDirectory();
if (!CWD || CWD->empty())
return errc::operation_not_permitted;

4
unittests/Support/VirtualFileSystemTest.cpp
View File

@ -73,8 +73,8 @@ public:
return std::error_code();
}
// Map any symlink to "/symlink".
std::error_code getRealPath(const Twine &Path,
SmallVectorImpl<char> &Output) const override {
std::error_code getRealPath(const Twine &Path, SmallVectorImpl<char> &Output,
bool ExpandTilde) const override {
auto I = FilesAndDirs.find(Path.str());
if (I == FilesAndDirs.end())
return make_error_code(llvm::errc::no_such_file_or_directory);