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#include "tokenstring.h"
#include <string.h>
TokenString::TokenString( const char *lpNewTokenString )
{
lpTokenString = NULL;
if( lpNewTokenString )
{
parseLine( lpNewTokenString );
}
}
TokenString::~TokenString()
{
delete[] lpTokenString;
for( int j = 0; j < lToken.getSize(); j++ )
{
delete[] (((Token *)lToken[j])->lpToken);
delete ((Token *)lToken[j]);
}
}
void TokenString::parseLine( const char *lpNewTokenString )
{
if( lpTokenString != NULL )
{
delete[] lpTokenString;
lpTokenString = NULL;
for( int j = 0; j < lToken.getSize(); j++ )
{
delete[] (((Token *)lToken[j])->lpToken);
delete ((Token *)lToken[j]);
}
lToken.empty();
}
if( lpNewTokenString == NULL )
{
lpTokenString = new char[1];
lpTokenString[0] = '\0';
lToken.setSize(0);
return;
}
// First order of business, make an internal copy so someone can get it
// if they want to.
int nLen = strlen(lpNewTokenString);
lpTokenString = new char[nLen+1];
strcpy( lpTokenString, lpNewTokenString );
// Now we do a preliminary parse. This could be effected by later
// editing and aliasing, but we'll see...
int nTkStart, nTkEnd;
int mode=0; // 0 = startSearch, 1=endSearch
for( int j = 0; j <= nLen; j++ )
{
if( mode == 0 )
{
if( lpTokenString[j] != ' ' &&
lpTokenString[j] != '\t' )
{
nTkStart = j;
mode = 1;
}
}
else
{
if( lpTokenString[j] == ' ' ||
lpTokenString[j] == '\t' ||
lpTokenString[j] == '\0' )
{
nTkEnd = j-1;
mode = 0;
appendToken( nTkStart, nTkEnd );
}
}
}
}
void TokenString::appendToken( int nStart, int nEnd )
{
Token *pToken = new Token;
pToken->lpOrig = &lpTokenString[nStart];
// nStart and nEnd are inclusive, we must add two for the end, and the null
pToken->lpToken = new char[nEnd-nStart+2];
memcpy( pToken->lpToken, &lpTokenString[nStart], nEnd-nStart+1 );
pToken->lpToken[nEnd-nStart+1] = '\0';
// printf("%s\n", pToken->lpToken );
lToken.append( pToken );
}
void TokenString::insertToken( int nStart, int nEnd, char *lpOldOrig, const char *lpNewToken, int nIndex )
{
Token *pToken = new Token;
pToken->lpOrig = lpOldOrig;
// nStart and nEnd are inclusive, we must add two for the end, and the null
pToken->lpToken = new char[nEnd-nStart+2];
memcpy( pToken->lpToken, &lpNewToken[nStart], nEnd-nStart+1 );
pToken->lpToken[nEnd-nStart+1] = '\0';
lToken.insertBefore( pToken, nIndex );
}
int TokenString::getNumTokens()
{
return lToken.getSize();
}
char *TokenString::getToken( int nIndex )
{
if( nIndex >= lToken.getSize() ) return NULL;
return (char *)(((Token *)lToken[nIndex])->lpToken);
}
char *TokenString::getTokenString( int nIndex )
{
if( nIndex >= lToken.getSize() ) return NULL;
return (char *)(((Token *)lToken[nIndex])->lpOrig);
}
void TokenString::expandTokenTo( int nIndex, char *lpNewToken )
{
// First, we delete the token at nIndex, then we keep inserting
// at that position...
// We also have to remember the index to the original string,
// since most of what we're expanding to won't be in the origingal
// we need to keep these indexes updated in order to make other parts
// of the system happy.
char *lpOldOrig = ((Token *)lToken[nIndex])->lpOrig;
delete[] ((Token *)lToken[nIndex])->lpToken;
delete ((Token *)lToken[nIndex]);
lToken.deleteAt( nIndex );
// We'll do this just like we did above, but instead we'll
// do tricky things when we find tokens...
int nLen = strlen(lpNewToken);
int nTkStart, nTkEnd, nNewIndex=nIndex;
int mode=0; // 0 = startSearch, 1=endSearch
for( int j = 0; j <= nLen; j++ )
{
if( mode == 0 )
{
if( lpNewToken[j] != ' ' && lpNewToken[j] != '\t' )
{
nTkStart = j;
mode = 1;
}
}
else
{
if( lpNewToken[j] == ' ' || lpNewToken[j] == '\t' || lpNewToken[j] == '\0' )
{
nTkEnd = j-1;
mode = 0;
insertToken( nTkStart, nTkEnd, lpOldOrig, lpNewToken, nNewIndex );
nNewIndex++;
}
}
}
}
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