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/************************************************************************/
/* */
/* Manage the string of text bytes in a paragraph. */
/* (Try not to be too clever, this will be changed to unicode once.) */
/* */
/************************************************************************/
# include "tedConfig.h"
# include <stdlib.h>
# include <string.h>
# include <stdio.h>
# include <appDebugon.h>
# include "docBuf.h"
/************************************************************************/
/* */
/* Make sure there is enough space in the string of a paragraph. */
/* */
/* NOTE that bi->biParaStrlen is not updated. We just make sure that */
/* there is enough memory. */
/* */
/************************************************************************/
int docInflateTextString( BufferItem * bi,
int by )
{
unsigned char * freshString;
int newSize;
if ( bi->biLevel != DOClevPARA )
{ LLDEB(bi->biLevel,DOClevPARA); return -1; }
if ( bi->biParaStrlen % 50 )
{ newSize= bi->biParaStrlen+ by+ 1; }
else{ newSize= bi->biParaStrlen+ by+ 51; }
freshString= (unsigned char *)realloc( bi->biParaString, newSize );
if ( ! freshString )
{ LXDEB(bi->biParaStrlen,freshString); return -1; }
bi->biParaString= freshString;
return 0;
}
/************************************************************************/
/* */
/* Replace part of the string of a paragraph with a different string */
/* */
/************************************************************************/
int docParaStringReplace( int * pStroffShift,
BufferItem * bi,
int stroffBegin,
int stroffEnd,
const unsigned char * addedString,
int addedStrlen )
{
int stroffShift;
stroffShift= addedStrlen- stroffEnd+ stroffBegin;
if ( stroffShift > 0 &&
docInflateTextString( bi, stroffShift ) )
{ LLDEB(bi->biParaStrlen,stroffShift); return -1; }
if ( bi->biParaStrlen > 0 )
{
memmove( bi->biParaString+ stroffEnd+ stroffShift,
bi->biParaString+ stroffEnd, bi->biParaStrlen- stroffEnd+ 1 );
}
memcpy( bi->biParaString+ stroffBegin, addedString, addedStrlen );
if ( stroffShift != 0 )
{
bi->biParaStrlen += stroffShift;
bi->biParaString[bi->biParaStrlen]= '\0';
}
*pStroffShift= stroffShift;
return 0;
}
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