--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/modules/zip/libzip/lib/zip_error.c	Wed Jun 01 17:36:52 2016 +0200
@@ -0,0 +1,155 @@
+/*
+  zip_error.c -- zip_error_t helper functions
+  Copyright (C) 1999-2015 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 <stdlib.h>
+
+#include "zipint.h"
+
+
+ZIP_EXTERN int
+zip_error_code_system(const zip_error_t *error) {
+    return error->sys_err;
+}
+
+
+ZIP_EXTERN int
+zip_error_code_zip(const zip_error_t *error) {
+    return error->zip_err;
+}
+
+
+ZIP_EXTERN void
+zip_error_fini(zip_error_t *err)
+{
+    free(err->str);
+    err->str = NULL;
+}
+
+
+ZIP_EXTERN void
+zip_error_init(zip_error_t *err)
+{
+    err->zip_err = ZIP_ER_OK;
+    err->sys_err = 0;
+    err->str = NULL;
+}
+
+ZIP_EXTERN void
+zip_error_init_with_code(zip_error_t *error, int ze)
+{
+    zip_error_init(error);
+    error->zip_err = ze;
+    switch (zip_error_system_type(error)) {
+    case ZIP_ET_SYS:
+	error->sys_err = errno;
+	break;
+
+    default:
+	error->sys_err = 0;
+	break;
+    }	
+}
+
+
+ZIP_EXTERN int
+zip_error_system_type(const zip_error_t *error) {
+    if (error->zip_err < 0 || error->zip_err >= _zip_nerr_str)
+        return ZIP_ET_NONE;
+    
+    return _zip_err_type[error->zip_err];
+}
+
+
+void
+_zip_error_clear(zip_error_t *err)
+{
+    if (err == NULL)
+	return;
+
+    err->zip_err = ZIP_ER_OK;
+    err->sys_err = 0;
+}
+
+
+void
+_zip_error_copy(zip_error_t *dst, const zip_error_t *src)
+{
+    dst->zip_err = src->zip_err;
+    dst->sys_err = src->sys_err;
+}
+
+
+void
+_zip_error_get(const zip_error_t *err, int *zep, int *sep)
+{
+    if (zep)
+	*zep = err->zip_err;
+    if (sep) {
+	if (zip_error_system_type(err) != ZIP_ET_NONE)
+	    *sep = err->sys_err;
+	else
+	    *sep = 0;
+    }
+}
+
+
+void
+zip_error_set(zip_error_t *err, int ze, int se)
+{
+    if (err) {
+	err->zip_err = ze;
+	err->sys_err = se;
+    }
+}
+
+
+void
+_zip_error_set_from_source(zip_error_t *err, zip_source_t *src)
+{
+    _zip_error_copy(err, zip_source_error(src));
+}
+
+
+zip_int64_t
+zip_error_to_data(const zip_error_t *error, void *data, zip_uint64_t length)
+{
+    int *e = (int *)data;
+    
+    if (length < sizeof(int)*2) {
+        return -1;
+    }
+    
+    e[0] = zip_error_code_zip(error);
+    e[1] = zip_error_code_system(error);
+    return sizeof(int)*2;
+}