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-rw-r--r--sal/osl/all/filepath.cxx113
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diff --git a/sal/osl/all/filepath.cxx b/sal/osl/all/filepath.cxx
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+/* -*- 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: */