[clang][Tooling] Delete dots and dotdots when generating absolute paths

Summary:
GetAllFiles interface returns absolute paths, but keeps dots and dot
dots. This patch makes those paths canonical by deleting them.

Reviewers: hokein

Subscribers: cfe-commits

Tags: #clang

Differential Revision: https://reviews.llvm.org/D59079

llvm-svn: 355678

2 files changed, 6 insertions, 0 deletions

diff --git a/clang/lib/Tooling/JSONCompilationDatabase.cpp b/clang/lib/Tooling/JSONCompilationDatabase.cpp
index 23bb1355c2c..3414f7db58a 100644
--- a/clang/lib/Tooling/JSONCompilationDatabase.cpp
+++ b/clang/lib/Tooling/JSONCompilationDatabase.cpp
@@ -370,6 +370,7 @@ bool JSONCompilationDatabase::parse(std::string &ErrorMessage) {
       SmallString<128> AbsolutePath(
           Directory->getValue(DirectoryStorage));
       llvm::sys::path::append(AbsolutePath, FileName);
+      llvm::sys::path::remove_dots(AbsolutePath, /*remove_dot_dot=*/ true);
       llvm::sys::path::native(AbsolutePath, NativeFilePath);
     } else {
       llvm::sys::path::native(FileName, NativeFilePath);
diff --git a/clang/unittests/Tooling/CompilationDatabaseTest.cpp b/clang/unittests/Tooling/CompilationDatabaseTest.cpp
index 3f67606cd5e..83fceba802f 100644
--- a/clang/unittests/Tooling/CompilationDatabaseTest.cpp
+++ b/clang/unittests/Tooling/CompilationDatabaseTest.cpp
@@ -88,12 +88,17 @@ TEST(JSONCompilationDatabase, GetAllFiles) {
   expected_files.push_back(PathStorage.str());
   llvm::sys::path::native("//net/dir/file2", PathStorage);
   expected_files.push_back(PathStorage.str());
+  llvm::sys::path::native("//net/file1", PathStorage);
+  expected_files.push_back(PathStorage.str());
   EXPECT_EQ(expected_files,
             getAllFiles("[{\"directory\":\"//net/dir\","
                         "\"command\":\"command\","
                         "\"file\":\"file1\"},"
                         " {\"directory\":\"//net/dir\","
                         "\"command\":\"command\","
+                        "\"file\":\"../file1\"},"
+                        " {\"directory\":\"//net/dir\","
+                        "\"command\":\"command\","
                         "\"file\":\"file2\"}]",
                         ErrorMessage, JSONCommandLineSyntax::Gnu))
       << ErrorMessage;