Fixed canonical path function.

llvm-svn: 230665

1 files changed, 19 insertions, 1 deletions

diff --git a/clang-tools-extra/modularize/ModularizeUtilities.cpp b/clang-tools-extra/modularize/ModularizeUtilities.cpp
index 60388006187..50dd8b1f258 100644
--- a/clang-tools-extra/modularize/ModularizeUtilities.cpp
+++ b/clang-tools-extra/modularize/ModularizeUtilities.cpp
@@ -341,13 +341,31 @@ bool ModularizeUtilities::collectUmbrellaHeaders(StringRef UmbrellaDirName,
   }
   return true;
 }
+

+std::string normalize(StringRef Path) {

+  SmallString<128> Buffer;

+  llvm::sys::path::const_iterator B = llvm::sys::path::begin(Path),

+    E = llvm::sys::path::end(Path);

+  while (B != E) {

+    if (B->compare(".") == 0) {

+    }

+    else if (B->compare("..") == 0)

+      llvm::sys::path::remove_filename(Buffer);

+    else

+      llvm::sys::path::append(Buffer, *B);

+    ++B;

+  }

+  if (Path.endswith("/") || Path.endswith("\\"))

+    Buffer.append(1, Path.back());

+  return Buffer.c_str();

+}

 
 // Convert header path to canonical form.
 // The canonical form is basically just use forward slashes, and remove "./".
 // \param FilePath The file path, relative to the module map directory.
 // \returns The file path in canonical form.
 std::string ModularizeUtilities::getCanonicalPath(StringRef FilePath) {
-  std::string Tmp(FilePath);
+  std::string Tmp(normalize(FilePath));
   std::replace(Tmp.begin(), Tmp.end(), '\\', '/');
   StringRef Tmp2(Tmp);
   if (Tmp2.startswith("./"))