1 files changed, 113 insertions, 0 deletions
diff --git a/sal/osl/all/filepath.cxx b/sal/osl/all/filepath.cxx
new file mode 100644
index 000000000..afba01739
--- /dev/null
+++ b/sal/osl/all/filepath.cxx
@@ -0,0 +1,113 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#include <osl/file.h>
+#include <rtl/ustring.h>
+#include <cassert>
+
+static sal_uInt32 osl_defCalcTextWidth( rtl_uString *ustrText )
+{
+    return ustrText ? ustrText->length : 0;
+}
+
+oslFileError SAL_CALL osl_abbreviateSystemPath( rtl_uString *ustrSystemPath, rtl_uString **pustrCompacted, sal_uInt32 uMaxWidth, oslCalcTextWidthFunc pfnCalcWidth )
+{
+    rtl_uString     *ustrPath = nullptr;
+    rtl_uString     *ustrFile = nullptr;
+    sal_uInt32      uPathWidth, uFileWidth;
+
+    if ( !pfnCalcWidth )
+        pfnCalcWidth = osl_defCalcTextWidth;
+
+    {
+        sal_Int32   iLastSlash = rtl_ustr_lastIndexOfChar_WithLength( ustrSystemPath->buffer, ustrSystemPath->length, SAL_PATHDELIMITER );
+
+        if ( iLastSlash >= 0 )
+        {
+            rtl_uString_newFromStr_WithLength( &ustrPath, ustrSystemPath->buffer, iLastSlash );
+            rtl_uString_newFromStr_WithLength( &ustrFile, &ustrSystemPath->buffer[iLastSlash], ustrSystemPath->length - iLastSlash );
+        }
+        else
+        {
+            rtl_uString_new( &ustrPath );
+            rtl_uString_newFromString( &ustrFile, ustrSystemPath );
+        }
+    }
+
+    assert(ustrPath && ustrFile);
+
+    uPathWidth = pfnCalcWidth( ustrPath );
+    uFileWidth = pfnCalcWidth( ustrFile );
+
+    /* First abbreviate the directory component of the path */
+
+    while ( uPathWidth + uFileWidth > uMaxWidth )
+    {
+        if ( ustrPath->length > 3 )
+        {
+            ustrPath->length--;
+            ustrPath->buffer[ustrPath->length-3] = '.';
+            ustrPath->buffer[ustrPath->length-2] = '.';
+            ustrPath->buffer[ustrPath->length-1] = '.';
+            ustrPath->buffer[ustrPath->length] = 0;
+
+            uPathWidth = pfnCalcWidth( ustrPath );
+        }
+        else
+            break;
+    }
+
+    /* Now abbreviate file component */
+
+    while ( uPathWidth + uFileWidth > uMaxWidth )
+    {
+        if ( ustrFile->length > 4 )
+        {
+            ustrFile->length--;
+            ustrFile->buffer[ustrFile->length-3] = '.';
+            ustrFile->buffer[ustrFile->length-2] = '.';
+            ustrFile->buffer[ustrFile->length-1] = '.';
+            ustrFile->buffer[ustrFile->length] = 0;
+
+            uFileWidth = pfnCalcWidth( ustrFile );
+        }
+        else
+            break;
+    }
+
+    rtl_uString_newConcat( pustrCompacted, ustrPath, ustrFile );
+
+    /* Event now if path was compacted to ".../..." it can be too large */
+
+    uPathWidth += uFileWidth;
+
+    while ( uPathWidth > uMaxWidth )
+    {
+        (*pustrCompacted)->length--;
+        (*pustrCompacted)->buffer[(*pustrCompacted)->length] = 0;
+        uPathWidth = pfnCalcWidth( *pustrCompacted );
+    }
+
+    rtl_uString_release(ustrPath);
+    rtl_uString_release(ustrFile);
+
+    return osl_File_E_None;
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */