Introduce llvm::sys::path::home_directory.

This will be used by the line editor library to derive a default path to
the history file.

Differential Revision: http://llvm-reviews.chandlerc.com/D2199

llvm-svn: 200594

1 files changed, 15 insertions, 0 deletions

diff --git a/llvm/lib/Support/Unix/Path.inc b/llvm/lib/Support/Unix/Path.inc
index d5260424616..d0b63b5ba5c 100644
--- a/llvm/lib/Support/Unix/Path.inc
+++ b/llvm/lib/Support/Unix/Path.inc
@@ -797,5 +797,20 @@ error_code openFileForWrite(const Twine &Name, int &ResultFD,
 }
 
 } // end namespace fs
+
+namespace path {
+
+bool home_directory(SmallVectorImpl<char> &result) {
+  if (char *RequestedDir = getenv("HOME")) {
+    result.clear();
+    result.append(RequestedDir, RequestedDir + strlen(RequestedDir));
+    return true;
+  }
+
+  return false;
+}
+
+} // end namespace path
+
 } // end namespace sys
 } // end namespace llvm