Encoding: Fix potential encoding issues with libarchive on Windows.

Because the 8bit string encoding in libarchive can be different than
the 8bit string encoding in CMake, change to call the wide version
of libarchive functions.  They are different if CMake is configured
to use UTF-8 as the internal encoding.

Create helper functions for some libarchive calls to use wstring
internally on platforms supporting it.

1 files changed, 24 insertions, 2 deletions

diff --git a/Source/cmArchiveWrite.cxx b/Source/cmArchiveWrite.cxx
index 58f7573c29..3b0ead5ffd 100644
--- a/Source/cmArchiveWrite.cxx
+++ b/Source/cmArchiveWrite.cxx
@@ -25,6 +25,28 @@ static std::string cm_archive_error_string(struct archive* a)
 }
 
 //----------------------------------------------------------------------------
+static void cm_archive_entry_copy_pathname(struct archive_entry* e,
+  const std::string& dest)
+{
+#if cmsys_STL_HAS_WSTRING
+  archive_entry_copy_pathname_w(e, cmsys::Encoding::ToWide(dest).c_str());
+#else
+  archive_entry_copy_pathname(e, dest.c_str());
+#endif
+}
+
+//----------------------------------------------------------------------------
+static void cm_archive_entry_copy_sourcepath(struct archive_entry* e,
+  const std::string& file)
+{
+#if cmsys_STL_HAS_WSTRING
+  archive_entry_copy_sourcepath_w(e, cmsys::Encoding::ToWide(file).c_str());
+#else
+  archive_entry_copy_sourcepath(e, file.c_str());
+#endif
+}
+
+//----------------------------------------------------------------------------
 class cmArchiveWrite::Entry
 {
   struct archive_entry* Object;
@@ -237,8 +259,8 @@ bool cmArchiveWrite::AddFile(const char* file,
     std::cout << dest << "\n";
     }
   Entry e;
-  archive_entry_copy_sourcepath(e, file);
-  archive_entry_set_pathname(e, dest.c_str());
+  cm_archive_entry_copy_sourcepath(e, file);
+  cm_archive_entry_copy_pathname(e, dest);
   if(archive_read_disk_entry_from_file(this->Disk, e, -1, 0) != ARCHIVE_OK)
     {
     this->Error = "archive_read_disk_entry_from_file: ";