[PATCH 19/41] robocopy: add mirror source flag (/MIR)

[Florian Eder]

Implements the /MIR switch, which is mostly an alias of /S /E /PURGE

Signed-off-by: Florian Eder 
---
 programs/robocopy/main.c     | 16 +++++++++++++++-
 programs/robocopy/robocopy.h |  1 +
 2 files changed, 16 insertions(+), 1 deletion(-)

diff --git a/programs/robocopy/main.c b/programs/robocopy/main.c
index 0bb0e83783c..3036776339d 100644
--- a/programs/robocopy/main.c
+++ b/programs/robocopy/main.c
@@ -162,6 +162,16 @@ static void parse_arguments(int argc, WCHAR *argv[])
             {
                 options.purge_destination = TRUE;
             }
+            /* mirror - Mirror Source in Destination */
+            else if (!wcsicmp(argv[i], L"/mir"))
+            {
+                options.copy_empty_subdirectories = TRUE;
+                options.copy_subdirectories = TRUE;
+                options.purge_destination = TRUE;
+                options.mirror = TRUE;
+                if (!options.user_limited_subdirectories_depth)
+                    options.max_subdirectories_depth = 0;
+            }
             /* mov - Delete files (but not folders) after copying them */
             else if (!wcsicmp(argv[i], L"/mov"))
             {
@@ -363,7 +373,7 @@ static BOOL perform_copy(struct robocopy_statistics *statistics)
             if ((PathIsDirectoryEmptyW(current_absolute_path) && !options.copy_empty_subdirectories)) continue;

/* Create the directory path and then create the directory itself */
-            if (!create_directory_path(target_path))
+            if (!create_directory_path(target_path) || (!CreateDirectoryW(target_path, NULL) && GetLastError() != ERROR_ALREADY_EXISTS))
                 output_error(STRING_ERROR_WRITE_DIRECTORY, GetLastError(), strip_path_prefix(target_path));
             else statistics->copied_directories++;
         }
@@ -428,6 +438,10 @@ static WCHAR *get_option_string(void)
     if (options.files->size == 0)
         wcscat(temp_string, L"*.* ");

+    /* Mirror */
+    if (options.mirror)
+        wcscat(temp_string, L"/MIR ");
+
     /* Subdirectories */
     if (options.copy_subdirectories)
         wcscat(temp_string, L"/S ");
diff --git a/programs/robocopy/robocopy.h b/programs/robocopy/robocopy.h
index 1417f8b0e1c..e6779248aa5 100644
--- a/programs/robocopy/robocopy.h
+++ b/programs/robocopy/robocopy.h
@@ -41,6 +41,7 @@ struct robocopy_options {
     BOOL copy_empty_subdirectories;
     BOOL purge_source_files;
     BOOL purge_destination;
+    BOOL mirror;
 };

struct robocopy_statistics {