4acb0e7f05
Change-Id: Icc30c79d599486203c8f763cd5ff43059f0bb910 Reviewed-on: https://gerrit.libreoffice.org/c/core/+/91556 Tested-by: Jenkins Reviewed-by: Noel Grandin <noel.grandin@collabora.co.uk>
182 lines
5.6 KiB
C++
182 lines
5.6 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/*
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* This file is part of the LibreOffice project.
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*
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* This file incorporates work covered by the following license notice:
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed
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* with this work for additional information regarding copyright
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* ownership. The ASF licenses this file to you under the Apache
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* License, Version 2.0 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.apache.org/licenses/LICENSE-2.0 .
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*/
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#include <string.h>
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#include <osl/interlck.h>
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#include <rtl/strbuf.hxx>
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#include "strimp.hxx"
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/*************************************************************************
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* rtl_stringbuffer_newFromStr_WithLength
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*/
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void SAL_CALL rtl_stringbuffer_newFromStr_WithLength( rtl_String ** newStr,
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const char * value,
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sal_Int32 count )
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{
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assert(newStr);
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assert(count >= 0);
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if (!value)
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{
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rtl_string_new_WithLength( newStr, 16 );
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return;
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}
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// use raw alloc to avoid overwriting the buffer twice
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if ( *newStr)
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rtl_string_release( *newStr );
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*newStr = rtl_string_ImplAlloc( count + 16 );
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(*newStr)->length = count;
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memcpy( (*newStr)->buffer, value, count );
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memset( (*newStr)->buffer + count, 0, 16 );
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}
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/*************************************************************************
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* rtl_stringbuffer_newFromStringBuffer
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*/
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sal_Int32 SAL_CALL rtl_stringbuffer_newFromStringBuffer( rtl_String ** newStr,
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sal_Int32 capacity,
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rtl_String * oldStr )
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{
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assert(newStr);
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assert(oldStr);
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assert(capacity >= 0);
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sal_Int32 newCapacity = capacity;
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if (newCapacity < oldStr->length)
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newCapacity = oldStr->length;
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rtl_string_new_WithLength( newStr, newCapacity );
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if (oldStr->length > 0) {
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(*newStr)->length = oldStr->length;
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memcpy( (*newStr)->buffer, oldStr->buffer, oldStr->length );
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}
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return newCapacity;
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}
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/*************************************************************************
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* rtl_stringbuffer_ensureCapacity
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*/
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void SAL_CALL rtl_stringbuffer_ensureCapacity
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(rtl_String ** This, sal_Int32* capacity, sal_Int32 minimumCapacity)
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{
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assert(This);
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// assert(capacity && *capacity >= 0);
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// assert(minimumCapacity >= 0);
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if (minimumCapacity <= *capacity)
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return;
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rtl_String * pTmp = *This;
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rtl_String * pNew = nullptr;
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auto nLength = (*This)->length;
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*capacity = (nLength + 1) * 2;
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if (minimumCapacity > *capacity)
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/* still lower, set to the minimum capacity */
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*capacity = minimumCapacity;
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// use raw alloc to avoid overwriting the buffer twice
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pNew = rtl_string_ImplAlloc( *capacity );
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pNew->length = nLength;
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*This = pNew;
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memcpy( (*This)->buffer, pTmp->buffer, nLength );
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memset( (*This)->buffer + nLength, 0, *capacity - nLength );
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rtl_string_release( pTmp );
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}
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/*************************************************************************
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* rtl_stringbuffer_insert
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*/
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void SAL_CALL rtl_stringbuffer_insert( rtl_String ** This,
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sal_Int32 * capacity,
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sal_Int32 offset,
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const char * str,
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sal_Int32 len )
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{
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assert(This);
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assert(capacity && *capacity >= 0);
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assert(offset >= 0 && offset <= (**This).length);
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assert(len >= 0);
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sal_Int32 nOldLen;
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char * pBuf;
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sal_Int32 n;
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if( len == 0 )
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return;
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if (*capacity < (*This)->length + len)
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rtl_stringbuffer_ensureCapacity( This, capacity, (*This)->length + len );
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nOldLen = (*This)->length;
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pBuf = (*This)->buffer;
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/* copy the tail */
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n = (nOldLen - offset);
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if( n == 1 )
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/* optimized for 1 character */
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pBuf[offset + len] = pBuf[offset];
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else if( n > 1 )
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memmove( pBuf + offset + len, pBuf + offset, n * sizeof(char) );
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/* insert the new characters */
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if( str != nullptr )
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{
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if( len == 1 )
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/* optimized for 1 character */
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pBuf[offset] = *str;
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else
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memcpy( pBuf + offset, str, len * sizeof(char) );
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}
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(*This)->length = nOldLen + len;
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pBuf[ nOldLen + len ] = 0;
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}
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/*************************************************************************
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* rtl_stringbuffer_remove
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*/
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void SAL_CALL rtl_stringbuffer_remove( rtl_String ** This,
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sal_Int32 start,
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sal_Int32 len )
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{
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assert(This);
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assert(start >= 0 && start <= (**This).length);
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assert(len >= 0);
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sal_Int32 nTailLen;
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char * pBuf;
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if (len > (*This)->length - start)
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len = (*This)->length - start;
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//remove nothing
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if (!len)
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return;
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pBuf = (*This)->buffer;
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nTailLen = (*This)->length - ( start + len );
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if (nTailLen)
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{
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/* move the tail */
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memmove(pBuf + start, pBuf + start + len, nTailLen * sizeof(char));
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}
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(*This)->length-=len;
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pBuf[ (*This)->length ] = 0;
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}
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/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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