--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/libzip/lib/zip_source_win32utf8.c	Wed Feb 24 21:19:28 2016 +0100
@@ -0,0 +1,79 @@
+/*
+zip_source_win32utf8.c -- create data source from Windows file (UTF-8)
+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 <stdio.h>
+
+#include "zipint.h"
+#include "zipwin32.h"
+
+
+ZIP_EXTERN zip_source_t *
+zip_source_file(zip_t *za, const char *fname, zip_uint64_t start, zip_int64_t len)
+{
+    if (za == NULL)
+	return NULL;
+
+    return zip_source_file_create(fname, start, len, &za->error);
+}
+
+
+ZIP_EXTERN zip_source_t *
+zip_source_file_create(const char *fname, zip_uint64_t start, zip_int64_t length, zip_error_t *error)
+{
+    int size;
+    wchar_t *wfname;
+    zip_source_t *source;
+
+    if (fname == NULL || length < -1) {
+	zip_error_set(error, ZIP_ER_INVAL, 0);
+	return NULL;
+    }
+
+    /* Convert fname from UTF-8 to Windows-friendly UTF-16. */
+    size = MultiByteToWideChar(CP_UTF8, MB_ERR_INVALID_CHARS, fname, -1, NULL, 0);
+    if (size == 0) {
+	zip_error_set(error, ZIP_ER_INVAL, 0);
+	return NULL;
+    }
+    if ((wfname = (wchar_t *)malloc(sizeof(wchar_t) * size)) == NULL) {
+	zip_error_set(error, ZIP_ER_MEMORY, 0);
+	return NULL;
+    }
+    MultiByteToWideChar(CP_UTF8, MB_ERR_INVALID_CHARS, fname, -1, wfname, size);
+
+    source = zip_source_win32w_create(wfname, start, length, error);
+
+    free(wfname);
+    return source;
+}