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-rw-r--r--vcl/source/helper/strhelper.cxx380
1 files changed, 380 insertions, 0 deletions
diff --git a/vcl/source/helper/strhelper.cxx b/vcl/source/helper/strhelper.cxx
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+++ b/vcl/source/helper/strhelper.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 <strhelper.hxx>
+
+namespace {
+
+bool isSpace( sal_Unicode cChar )
+{
+ return
+ cChar == ' ' || cChar == '\t' ||
+ cChar == '\r' || cChar == '\n' ||
+ cChar == 0x0c || cChar == 0x0b;
+}
+
+bool isProtect( sal_Unicode cChar )
+{
+ return cChar == '`' || cChar == '\'' || cChar == '"';
+}
+
+void CopyUntil( char*& pTo, const char*& pFrom, char cUntil, bool bIncludeUntil = false )
+{
+ do
+ {
+ if( *pFrom == '\\' )
+ {
+ pFrom++;
+ if( *pFrom )
+ {
+ *pTo = *pFrom;
+ pTo++;
+ }
+ }
+ else if( bIncludeUntil || ! isProtect( *pFrom ) )
+ {
+ *pTo = *pFrom;
+ pTo++;
+ }
+ pFrom++;
+ } while( *pFrom && *pFrom != cUntil );
+ // copy the terminating character unless zero or protector
+ if( ! isProtect( *pFrom ) || bIncludeUntil )
+ {
+ *pTo = *pFrom;
+ if( *pTo )
+ pTo++;
+ }
+ if( *pFrom )
+ pFrom++;
+}
+
+void CopyUntil( sal_Unicode*& pTo, const sal_Unicode*& pFrom, sal_Unicode cUntil, bool bIncludeUntil = false )
+{
+ do
+ {
+ if( *pFrom == '\\' )
+ {
+ pFrom++;
+ if( *pFrom )
+ {
+ *pTo = *pFrom;
+ pTo++;
+ }
+ }
+ else if( bIncludeUntil || ! isProtect( *pFrom ) )
+ {
+ *pTo = *pFrom;
+ pTo++;
+ }
+ if( *pFrom )
+ pFrom++;
+ } while( *pFrom && *pFrom != cUntil );
+ // copy the terminating character unless zero or protector
+ if( ! isProtect( *pFrom ) || bIncludeUntil )
+ {
+ *pTo = *pFrom;
+ if( *pTo )
+ pTo++;
+ }
+ if( *pFrom )
+ pFrom++;
+}
+
+}
+
+namespace psp {
+
+OUString GetCommandLineToken( int nToken, const OUString& rLine )
+{
+ sal_Int32 nLen = rLine.getLength();
+ if( ! nLen )
+ return OUString();
+
+ int nActualToken = 0;
+ sal_Unicode* pBuffer = static_cast<sal_Unicode*>(alloca( sizeof(sal_Unicode)*( nLen + 1 ) ));
+ const sal_Unicode* pRun = rLine.getStr();
+ sal_Unicode* pLeap = nullptr;
+
+ while( *pRun && nActualToken <= nToken )
+ {
+ while( *pRun && isSpace( *pRun ) )
+ pRun++;
+ pLeap = pBuffer;
+ while( *pRun && ! isSpace( *pRun ) )
+ {
+ if( *pRun == '\\' )
+ {
+ // escapement
+ pRun++;
+ *pLeap = *pRun;
+ pLeap++;
+ if( *pRun )
+ pRun++;
+ }
+ else if( *pRun == '`' )
+ CopyUntil( pLeap, pRun, '`' );
+ else if( *pRun == '\'' )
+ CopyUntil( pLeap, pRun, '\'' );
+ else if( *pRun == '"' )
+ CopyUntil( pLeap, pRun, '"' );
+ else
+ {
+ *pLeap = *pRun;
+ pLeap++;
+ pRun++;
+ }
+ }
+ if( nActualToken != nToken )
+ pBuffer[0] = 0;
+ nActualToken++;
+ }
+
+ *pLeap = 0;
+
+ return OUString(pBuffer);
+}
+
+OString GetCommandLineToken(int nToken, const OString& rLine)
+{
+ sal_Int32 nLen = rLine.getLength();
+ if (!nLen)
+ return rLine;
+
+ int nActualToken = 0;
+ char* pBuffer = static_cast<char*>(alloca( nLen + 1 ));
+ const char* pRun = rLine.getStr();
+ char* pLeap = nullptr;
+
+ while( *pRun && nActualToken <= nToken )
+ {
+ while( *pRun && isSpace( *pRun ) )
+ pRun++;
+ pLeap = pBuffer;
+ while( *pRun && ! isSpace( *pRun ) )
+ {
+ if( *pRun == '\\' )
+ {
+ // escapement
+ pRun++;
+ *pLeap = *pRun;
+ pLeap++;
+ if( *pRun )
+ pRun++;
+ }
+ else if( *pRun == '`' )
+ CopyUntil( pLeap, pRun, '`' );
+ else if( *pRun == '\'' )
+ CopyUntil( pLeap, pRun, '\'' );
+ else if( *pRun == '"' )
+ CopyUntil( pLeap, pRun, '"' );
+ else
+ {
+ *pLeap = *pRun;
+ pLeap++;
+ pRun++;
+ }
+ }
+ if( nActualToken != nToken )
+ pBuffer[0] = 0;
+ nActualToken++;
+ }
+
+ *pLeap = 0;
+
+ return pBuffer;
+}
+
+int GetCommandLineTokenCount(const OUString& rLine)
+{
+ if (rLine.isEmpty())
+ return 0;
+
+ int nTokenCount = 0;
+ const sal_Unicode *pRun = rLine.getStr();
+
+ while( *pRun )
+ {
+ while( *pRun && isSpace( *pRun ) )
+ pRun++;
+ if( ! *pRun )
+ break;
+ while( *pRun && ! isSpace( *pRun ) )
+ {
+ if( *pRun == '\\' )
+ {
+ // escapement
+ pRun++;
+ if( *pRun )
+ pRun++;
+ }
+ else if( *pRun == '`' )
+ {
+ do pRun++; while( *pRun && *pRun != '`' );
+ if( *pRun )
+ pRun++;
+ }
+ else if( *pRun == '\'' )
+ {
+ do pRun++; while( *pRun && *pRun != '\'' );
+ if( *pRun )
+ pRun++;
+ }
+ else if( *pRun == '"' )
+ {
+ do pRun++; while( *pRun && *pRun != '"' );
+ if( *pRun )
+ pRun++;
+ }
+ else
+ pRun++;
+ }
+ nTokenCount++;
+ }
+
+ return nTokenCount;
+}
+
+OUString WhitespaceToSpace( std::u16string_view rLine, bool bProtect )
+{
+ size_t nLen = rLine.size();
+ if( ! nLen )
+ return OUString();
+
+ sal_Unicode *pBuffer = static_cast<sal_Unicode*>(alloca( sizeof(sal_Unicode)*(nLen + 1) ));
+ const sal_Unicode *pRun = rLine.data();
+ const sal_Unicode * const pEnd = rLine.data() + rLine.size();
+ sal_Unicode *pLeap = pBuffer;
+
+ while( pRun != pEnd )
+ {
+ if( pRun != pEnd && isSpace( *pRun ) )
+ {
+ *pLeap = ' ';
+ pLeap++;
+ pRun++;
+ }
+ while( pRun != pEnd && isSpace( *pRun ) )
+ pRun++;
+ while( pRun != pEnd && ! isSpace( *pRun ) )
+ {
+ if( *pRun == '\\' )
+ {
+ // escapement
+ pRun++;
+ *pLeap = *pRun;
+ pLeap++;
+ if( pRun != pEnd )
+ pRun++;
+ }
+ else if( bProtect && *pRun == '`' )
+ CopyUntil( pLeap, pRun, '`', true );
+ else if( bProtect && *pRun == '\'' )
+ CopyUntil( pLeap, pRun, '\'', true );
+ else if( bProtect && *pRun == '"' )
+ CopyUntil( pLeap, pRun, '"', true );
+ else
+ {
+ *pLeap = *pRun;
+ ++pLeap;
+ ++pRun;
+ }
+ }
+ }
+
+ *pLeap = 0;
+
+ // there might be a space at beginning or end
+ if (pLeap > pBuffer)
+ {
+ pLeap--;
+ if( *pLeap == ' ' )
+ *pLeap = 0;
+ }
+
+ return OUString(*pBuffer == ' ' ? pBuffer+1 : pBuffer);
+}
+
+OString WhitespaceToSpace(std::string_view rLine)
+{
+ size_t nLen = rLine.size();
+ if (!nLen)
+ return OString();
+
+ char *pBuffer = static_cast<char*>(alloca( nLen + 1 ));
+ const char *pRun = rLine.data();
+ const char * const pEnd = rLine.data() + rLine.size();
+ char *pLeap = pBuffer;
+
+ while( pRun != pEnd )
+ {
+ if( pRun != pEnd && isSpace( *pRun ) )
+ {
+ *pLeap = ' ';
+ pLeap++;
+ pRun++;
+ }
+ while( pRun != pEnd && isSpace( *pRun ) )
+ pRun++;
+ while( pRun != pEnd && ! isSpace( *pRun ) )
+ {
+ if( *pRun == '\\' )
+ {
+ // escapement
+ pRun++;
+ *pLeap = *pRun;
+ pLeap++;
+ if( pRun != pEnd )
+ pRun++;
+ }
+ else if( *pRun == '`' )
+ CopyUntil( pLeap, pRun, '`', true );
+ else if( *pRun == '\'' )
+ CopyUntil( pLeap, pRun, '\'', true );
+ else if( *pRun == '"' )
+ CopyUntil( pLeap, pRun, '"', true );
+ else
+ {
+ *pLeap = *pRun;
+ ++pLeap;
+ ++pRun;
+ }
+ }
+ }
+
+ *pLeap = 0;
+
+ // there might be a space at beginning or end
+ assert(pLeap > pBuffer);
+ pLeap--;
+#if defined(__GNUC__) && __GNUC__ == 12
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wmaybe-uninitialized"
+#endif
+ if( *pLeap == ' ' )
+ *pLeap = 0;
+#if defined(__GNUC__) && __GNUC__ == 12
+#pragma GCC diagnostic pop
+#endif
+ return *pBuffer == ' ' ? pBuffer+1 : pBuffer;
+}
+
+} // namespace
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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