String Tokenizer Problem

[CsuperC]

I am creating my own string tokenizer - yet I am having problem with my nextToken method - the method should return the next token and move the counter to the start of the next token. I am having issues with appended a character on to the end of a temp string - here is my method -

char* nextToken(stringTokenizer *strTok)
{

char *tempString;
char delim;
int index;

tempString = (char *)malloc(20*sizeof(char));

delim=(*strTok)->delimiter;
index=(*strTok)->currIndex;

while(((*strTok)->charLine[index])!= delim)
{
//append (*strTok)->charLine[index] to
//tempString ?????
index++;
}

(*strTok)->currIndex = index+1;

return tempString;
}

how can I append a char each time to my temp string???



cheers!

 

[gasingh]

I think this is what you want:-

unsigned int count = 0;

while(((*strTok)->charLine[index])!= delim)
{
if(count <= 18) // 18 as 19th slot for '\0'
{
// Append a character
tempString[count++] = (*strTok)->charLine[index];
}
else
break;

index++;
}

tempString[count] = '\0';

Hope this helps
But if you think a bit more about this, it can be improved a lot in terms of performance and memory usage

 

[chipperMDW]

If you're creating your own tokenizer as a learning experience or as a school assignment (the two are usually mutually exclusive), that's fine.

If not, however, you might consider going to

http://www.boost.org

and getting their perfectly good tokenizer library.