(set, mission, multifire, fuel, cons_choose, cede): Use it instead of
ef_byname(). Remove the hacks to map unwanted results to wanted
results. The hacks in set() were broken: bad input made the code cast
arbitrary items to union trdgenstr, with potentially disastrous
consequences. Closes#906483 and #906486.
(set): Less cryptic prompt and diagnostics.
Problems with the old code:
* Insufficient error checking.
* It used TIOCNOTTY (obsolete BSDism) to get rid of the controlling
tty, except for hpux || Rel4, where it attempted to use the POSIX
way, but screwed up.
* It left file descriptors 0, 1, 2 in a somewhat weird state.
(ef_read): Used to get the file size again some circumstances; doesn't
make sense, as no other process may be writing this file.
(ef_write): Don't refuse to write beyond record 65536. This module
can cope with that. Some users have trouble long before that (short
record numbers), but that should be handled there.
(ef_write): Catch table not file-backed.
Catch negative count; used to have no effect with EFF_MEM, and
confusion otherwise. Try to recover from partially successful
extension. Need help from ef_write() to do a better job; to be done.
file descriptors.
(ef_flush, ef_close): Rely on negative fd instead of null cache to
detect unopened file. This is more logical and consistent with the
use of cache by the new tables that are not file-backed (rev. 1.22).
Use CANT_HAPPEN().
(ef_close): Failed to report cash flush failure.
(ef_close): Clear all EFF_OPEN flags. Should have been done in
rev. 1.27.
(ef_flush, ef_write): Use it. Old code couldn't cope with interrupted
or short writes (mostly harmless, as disk reads commonly complete).
(ef_write): Use CANT_HAPPEN() for catching unimplemented table
extensions.
couldn't cope with interrupted or short reads (mostly harmless, as
disk reads commonly complete), and left an empty cache after a failed
read.
(ef_open): Use fillcache() instead of read().
(ef_read): Fail if fillcache() fails to read at least one element.
Old version copied garbage to its caller and claimed success.
(really open flags, not mode) by new flags EFF_RDONLY, EFF_CREATE.
Open flags were needlessly general. Callers changed.
(empfile): Member mode now unused, remove.
silly EF_NMAP. Use characters instead: 'b' for bmap (was EF_BMAP),
't' for true bmap (was EF_MAP), 'r' for revert (was EF_MAP+EF_BMAP,
more sillness), and 'n' for nmap (was EF_NMAP). Callers changed.
(EF_NMAP): Remove.
Add table index to castr to create a reference to the symbol table.
Add "ship chr flags" table to empfile.
Add "plane chr flags" table to empfile.
Add "land chr flags" table to empfile.
Add "nuke chr flags" table to empfile.
Add EF_SHIP_CHR_FLAGS reference to ship_chr.
Add EF_PLANE_CHR_FLAGS reference to plane_chr.
Add EF_LAND_CHR_FLAGS reference to land_chr.
Add EF_NUKE_CHR_FLAGS reference to nuke_chr.
(show_ship_capab,show_plane_capab,show_land_capab,
show_nuke_capab,ship_flags,land_flags,plane_flags,nuke_flags):
Move ship_flags nsc.c from show.c
Rename ship_flags to ship_chr_flags.
Move plane_flags nsc.c from show.c
Rename plane_flags to plane_chr_flags.
Move land_flags nsc.c from show.c
Rename land_flags to land_chr_flags.
Move nuke_flags nsc.c from show.c
Rename nuke_flags to nuke_chr_flags.
This is to accomodate future symbol table for EF_PLANE table.
user sees the new elements of empfile[].
(EF_SECTOR_CHR, EF_SHIP_CHR, EF_PLANE_CHR, EF_LAND_CHR, EF_NUKE_CHR)
(EF_TREATY_CHR, EF_ITEM, EF_INFRASTRUCTURE, EF_PRODUCT): New. Not yet
used.
(my_ef_byname): Replacement for ef_byname() that sees the new
elements.
(xdchr): Work with empfile[] instead of chr_camap[].
(xdump): Use my_ef_byname() instead of ef_byname() and
chridx_by_name().
(camap, chr_camap, chridx_by_name): Remove.
