matheus ribeiro wrote:
> Just some food for thought. I was just looking at this function, and it
> seems to me muscle library should have a separate function to retrieve
> number of tokens.
This is inspired by the PC/SC implementation of SCardListReaders. This
function does it in the same way. This is the historical reason. A new
function would clarify the code ... maybe convenient.
Karsten
>
> For example, to allocate tokenList, you have to call MSCListToken twice.
> The first one to discover the number of tokens and the second one to
> fill the struct. From muscleTool.c (inside doListTokens):
>
> ===========================================
> rv = MSCListTokens(MSC_LIST_KNOWN, tokenList, &tokenSize); //1st call
> CHECK_ERR(rv != MSC_SUCCESS, "ListTokens Failed !");
>
> if (tokenSize == 0)
> {
> printf("No Valid Tokens Found\n");
> return;
> }
>
> tokenList = (MSCLPTokenInfo) malloc(sizeof(MSCTokenInfo) * tokenSize);
> CHECK_ERR(tokenList == 0, "Malloc Failed");
> rv = MSCListTokens(MSC_LIST_KNOWN, tokenList, &tokenSize); // 2nd call
> CHECK_ERR(rv != MSC_SUCCESS, "ListTokens Failed !");
> ========================================
>
> Wouldnt it be better if we had a separate function, say MSCGetNumTokens?
>
> Matheus
>
>
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