FUNCTIONS

char *dupstrn(char const *const source, size_t num_chars)

See dupstr, except that this version takes the number of characters to be copied. Easy for copying a string except the quotes.

char *dupstr(char const *const source)

The C89 standard does not define a strdup() in the C library, so define our own strdup. Function names beginning with "str" are reserved (I think), so make it dupstr, as that is what it does: duplicate a string.

FUNCTIONS

is_pir_directive

Returns a non-zero value if the specified name is a PIR directive.XXX It might be worthwhile to enter the PIR directives as rules; this saves a lot of checking; these rules should just return TK_ANY.