cmWorkingDirectory: Check success of current dir changes

1 files changed, 17 insertions, 0 deletions

diff --git a/Source/cmWorkingDirectory.h b/Source/cmWorkingDirectory.h
index aff9267..1f18ce7 100644
--- a/Source/cmWorkingDirectory.h
+++ b/Source/cmWorkingDirectory.h
@@ -9,6 +9,12 @@
 
 /** \class cmWorkingDirectory
  * \brief An RAII class to manipulate the working directory.
+ *
+ * The current working directory is set to the location given to the
+ * constructor. The working directory can be changed again as needed
+ * by calling SetDirectory(). When the object is destroyed, the destructor
+ * will restore the working directory to what it was when the object was
+ * created, regardless of any calls to SetDirectory() in the meantime.
  */
 class cmWorkingDirectory
 {
@@ -16,10 +22,21 @@ public:
   cmWorkingDirectory(std::string const& newdir);
   ~cmWorkingDirectory();
 
+  bool SetDirectory(std::string const& newdir);
   void Pop();
+  bool Failed() const { return ResultCode != 0; }
+
+  /** \return 0 if the last attempt to set the working directory was
+   *          successful. If it failed, the value returned will be the
+   *          \c errno value associated with the failure. A description
+   *          of the error code can be obtained by passing the result
+   *          to \c std::strerror().
+   */
+  int GetLastResult() const { return ResultCode; }
 
 private:
   std::string OldDir;
+  int ResultCode;
 };
 
 #endif