Some of the confusion about the file command-vocabulary is that it only exists in the Linux source code, not the PowerSDR source code.
Regards, John g0orx/n6lyt Frank Brickle wrote On 02/20/06 00:13,: > Jim Lux wrote: > > >>>update.[ch]. The list of commands is in command-vocabulary. > > >>I think we need a bit more help here, Frank. Is there a list of >>commands and their syntax, anywhere? > > > It's in the file "command-vocabulary." > > >> A bit of explanation of how >>do_update works might also be useful. What parses the commands into >>substrings? > > > See split.c. It works by close analogy with the "split" functions in > perl and awk. The first thing that happens to an update string is for it > to be broken into a list of tokens using split(). > > >>thunk.c/thunk.h has no comments other than that it will be kicked up a >>notch with gperf, but it kind of looks like some sort of parser. Or, at >>least, it uses things called CTE (= Command Table Entry?) and CTB (=?) > > > "Thunk" is a term commonly used to refer to a class of functions of a > fixed number of arguments, which can be invoked anonymously through > pointers. For example the "cmp" argument to qsort() is a "thunk." > > The routines in thunk.[ch] do nothing but (1) install a (string, > function-pointer) pair into a table and (2) look up in a table the > function pointer associated with a string, if any. > > >>Are the various command execution routines structured like c main >>progams with (int argc, char *argv[]) kind of parameters? > > > All of the update routines expect a pair of arguments (int n, char **p) > exactly analogous to (argc, argv). A command string immediately gets > split into constituent tokens and is passed in the split form to the > update routine named in p[0]. The number of tokens is 'n'. > > The substitution of (n, p) for (argc, argv) is also conventional, in > order to distinguish it from the arguments to a main() function. A > main() has an optional third argument, **envp, which points to the list > of environment strings. > > 73 > Frank > AB2KT > > _______________________________________________ > FlexRadio mailing list > FlexRadio@flex-radio.biz > http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz > Archive Link: http://mail.flex-radio.biz/pipermail/flexradio_flex-radio.biz/ > FlexRadio Homepage: http://www.flex-radio.com -- John Melton SunIT CTO x21708 (+44 1252 421708)
