--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/libzip/lib/zip_source_remove.c	Wed Feb 24 21:19:28 2016 +0100
@@ -0,0 +1,61 @@
+/*
+ zip_source_remove.c -- remove empty archive
+ Copyright (C) 2014 Dieter Baron and Thomas Klausner
+ 
+ This file is part of libzip, a library to manipulate ZIP archives.
+ The authors can be contacted at <libzip@nih.at>
+ 
+ Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following conditions
+ are met:
+ 1. Redistributions of source code must retain the above copyright
+ notice, this list of conditions and the following disclaimer.
+ 2. Redistributions in binary form must reproduce the above copyright
+ notice, this list of conditions and the following disclaimer in
+ the documentation and/or other materials provided with the
+ distribution.
+ 3. The names of the authors may not be used to endorse or promote
+ products derived from this software without specific prior
+ written permission.
+ 
+ THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS
+ OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY
+ DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
+ GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
+ IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+ IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+
+#include "zipint.h"
+
+
+int
+zip_source_remove(zip_source_t *src)
+{
+    if (src->write_state == ZIP_SOURCE_WRITE_REMOVED) {
+        return 0;
+    }
+    
+    if (ZIP_SOURCE_IS_OPEN_READING(src)) {
+	if (zip_source_close(src) < 0) {
+	    return -1;
+	}
+    }
+    if (src->write_state != ZIP_SOURCE_WRITE_CLOSED) {
+        zip_source_rollback_write(src);
+    }
+    
+    if (_zip_source_call(src, NULL, 0, ZIP_SOURCE_REMOVE) < 0) {
+        return -1;
+    }
+    
+    src->write_state = ZIP_SOURCE_WRITE_REMOVED;
+    
+    return 0;
+}