From 940b4d1848e8c70ab7642901a68594e8016caffc Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sat, 27 Apr 2024 18:51:28 +0200 Subject: Adding upstream version 1:7.0.4. Signed-off-by: Daniel Baumann --- sal/rtl/strbuf.cxx | 182 +++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 182 insertions(+) create mode 100644 sal/rtl/strbuf.cxx (limited to 'sal/rtl/strbuf.cxx') diff --git a/sal/rtl/strbuf.cxx b/sal/rtl/strbuf.cxx new file mode 100644 index 000000000..b9f4cd688 --- /dev/null +++ b/sal/rtl/strbuf.cxx @@ -0,0 +1,182 @@ +/* -*- 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 + +#include +#include +#include "strimp.hxx" + +/************************************************************************* + * rtl_stringbuffer_newFromStr_WithLength + */ +void SAL_CALL rtl_stringbuffer_newFromStr_WithLength( rtl_String ** newStr, + const char * value, + sal_Int32 count ) +{ + assert(newStr); + assert(count >= 0); + if (!value) + { + rtl_string_new_WithLength( newStr, 16 ); + return; + } + + // use raw alloc to avoid overwriting the buffer twice + if ( *newStr) + rtl_string_release( *newStr ); + *newStr = rtl_string_ImplAlloc( count + 16 ); + (*newStr)->length = count; + memcpy( (*newStr)->buffer, value, count ); + memset( (*newStr)->buffer + count, 0, 16 ); +} + +/************************************************************************* + * rtl_stringbuffer_newFromStringBuffer + */ +sal_Int32 SAL_CALL rtl_stringbuffer_newFromStringBuffer( rtl_String ** newStr, + sal_Int32 capacity, + rtl_String * oldStr ) +{ + assert(newStr); + assert(oldStr); + assert(capacity >= 0); + sal_Int32 newCapacity = capacity; + + if (newCapacity < oldStr->length) + newCapacity = oldStr->length; + + rtl_string_new_WithLength( newStr, newCapacity ); + if (oldStr->length > 0) { + (*newStr)->length = oldStr->length; + memcpy( (*newStr)->buffer, oldStr->buffer, oldStr->length ); + } + return newCapacity; +} + +/************************************************************************* + * rtl_stringbuffer_ensureCapacity + */ +void SAL_CALL rtl_stringbuffer_ensureCapacity + (rtl_String ** This, sal_Int32* capacity, sal_Int32 minimumCapacity) +{ + assert(This); +// assert(capacity && *capacity >= 0); +// assert(minimumCapacity >= 0); + if (minimumCapacity <= *capacity) + return; + + rtl_String * pTmp = *This; + rtl_String * pNew = nullptr; + auto nLength = (*This)->length; + *capacity = (nLength + 1) * 2; + if (minimumCapacity > *capacity) + /* still lower, set to the minimum capacity */ + *capacity = minimumCapacity; + + // use raw alloc to avoid overwriting the buffer twice + pNew = rtl_string_ImplAlloc( *capacity ); + pNew->length = nLength; + *This = pNew; + + memcpy( (*This)->buffer, pTmp->buffer, nLength ); + memset( (*This)->buffer + nLength, 0, *capacity - nLength ); + rtl_string_release( pTmp ); +} + +/************************************************************************* + * rtl_stringbuffer_insert + */ +void SAL_CALL rtl_stringbuffer_insert( rtl_String ** This, + sal_Int32 * capacity, + sal_Int32 offset, + const char * str, + sal_Int32 len ) +{ + assert(This); + assert(capacity && *capacity >= 0); + assert(offset >= 0 && offset <= (**This).length); + assert(len >= 0); + sal_Int32 nOldLen; + char * pBuf; + sal_Int32 n; + if( len == 0 ) + return; + + if (*capacity < (*This)->length + len) + rtl_stringbuffer_ensureCapacity( This, capacity, (*This)->length + len ); + + nOldLen = (*This)->length; + pBuf = (*This)->buffer; + + /* copy the tail */ + n = (nOldLen - offset); + if( n == 1 ) + /* optimized for 1 character */ + pBuf[offset + len] = pBuf[offset]; + else if( n > 1 ) + memmove( pBuf + offset + len, pBuf + offset, n * sizeof(char) ); + + /* insert the new characters */ + if( str != nullptr ) + { + if( len == 1 ) + /* optimized for 1 character */ + pBuf[offset] = *str; + else + memcpy( pBuf + offset, str, len * sizeof(char) ); + } + (*This)->length = nOldLen + len; + pBuf[ nOldLen + len ] = 0; +} + +/************************************************************************* + * rtl_stringbuffer_remove + */ +void SAL_CALL rtl_stringbuffer_remove( rtl_String ** This, + sal_Int32 start, + sal_Int32 len ) +{ + assert(This); + assert(start >= 0 && start <= (**This).length); + assert(len >= 0); + sal_Int32 nTailLen; + char * pBuf; + + if (len > (*This)->length - start) + len = (*This)->length - start; + + //remove nothing + if (!len) + return; + + pBuf = (*This)->buffer; + nTailLen = (*This)->length - ( start + len ); + + if (nTailLen) + { + /* move the tail */ + memmove(pBuf + start, pBuf + start + len, nTailLen * sizeof(char)); + } + + (*This)->length-=len; + pBuf[ (*This)->length ] = 0; +} + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ -- cgit v1.2.3