entry: support CE_WT_REMOVE flag in checkout_entry

'checkout_entry()' currently only supports creating new entries in the
working tree, but not deleting them.  Add the ability to remove
entries at the same time if the entry is marked with the CE_WT_REMOVE
flag.

Currently this doesn't have any effect, as the CE_WT_REMOVE flag is
only used in unpack-tree, however we will make use of this in a
subsequent step in the series.

Signed-off-by: Thomas Gummerer <t.gummerer@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/entry.c b/entry.c
index b9eef57117169487157e9e14e6b96b7defee113e..3d3701e7ae148b623e353ad2874e9dce28cca32b 100644 (file)
--- a/entry.c
+++ b/entry.c
@@ -441,6 +441,17 @@ int checkout_entry(struct cache_entry *ce,
        static struct strbuf path = STRBUF_INIT;
        struct stat st;
 
+       if (ce->ce_flags & CE_WT_REMOVE) {
+               if (topath)
+                       /*
+                        * No content and thus no path to create, so we have
+                        * no pathname to return.
+                        */
+                       BUG("Can't remove entry to a path");
+               unlink_entry(ce);
+               return 0;
+       }
+
        if (topath)
                return write_entry(ce, topath, state, 1);