input is provided thru buffer instead of a file

[Sunil Kumar Jain]

Hi;

I'm using bison & flex to parse the rxd bytes.
If inputs (rxd bytes from the network) to the flex, are provided as a char
buffer [instead of a file stream],
which one of the following should be used so that yylex( ) will start
scaning the char buffer?
1. yy_scan_string(const char *str);
2.yy_scan_bytes(const char *bytes,int len);

Pl let me know at the earliest.
regards
sunil