* libguile/read.c (scm_read_string): Use `scm_i_make_read_only_string ()' to
return a read-only string, as mandated by R5RS. Reported by Bill
Schottstaedt <bil@ccrma.Stanford.EDU>.
* libguile/strings.c (scm_i_make_read_only_string): New function.
(scm_i_shared_substring_read_only): Special-case the empty string
so that the read-only and read-write empty strings are `eq?'. This
optimization is relied on by the `substring/shared' `empty string'
test case in `srfi-13.test'.
* libguile/strings.h (scm_i_make_read_only_string): New declaration.
* test-suite/tests/strings.test ("string-set!")["literal string"]: New test.
* NEWS: Update.
* symbols.h, symbols.c (SCM_I_F_SYMBOL_UNINTERNED,
scm_i_symbol_is_interned, scm_i_mem2symbol,
scm_i_mem2uninternedsymbol): Use it to store uninternedness flag.
* socket.c, rw.c, deprecated.h, validate.h
(SCM_VALIDATE_STRING_COPY): Deprecated. Replaced all uses with
SCM_VALIDATE_STRING plus SCM_I_STRING_CHARS or
scm_to_locale_string, etc.
(SCM_VALIDATE_SUBSTRING_SPEC_COPY): Deprecated. Replaced as
above, plus scm_i_get_substring_spec.
Moved from string.h to deprecated.h.
* deprecated.c, deprecated.h (SCM_CHARS, SCM_LENGTH): Removed.
* strings.h, strings.c (SCM_MAKE_STRING_TAG): Rename dto
SCM_I_MAKE_STRING_TAG, changed all uses.
(SCM_STRING_CHARS, SCM_STRING_UCHARS, SCM_STRING_LENGTH): Renamed
to SCM_I_STRING_CHARS, SCM_I_STRING_UCHARS, and SCM_I_LENGTH
respectively. For a short time, the old names are still there as
aliases. Not all uses have been changed yet, but the ones in
strings.c have.
(SCM_STRING_MAX_LEN): Do not hardcode to 24 bits, compute from
SCM_T_BITS_MAX.
(scm_is_string, scm_from_locale_string, scm_from_locale_stringn,
scm_take_locale_string, scm_take_locale_stringn,
scm_to_locale_string, scm_to_locale_stringn,
scm_to_locale_stringbuf): New.
(scm_c_string2str, scm_c_substring2str): Deprecated by moving to
deprecated.[hc]. Implemented in terms of the new functions above.
(scm_take_str, scm_take0str, scm_mem2string, scm_str2string,
scm_makfrom0str): Reimplemented in terms of the new functions from
above. They will be discouraged shortly.
(scm_substring): Do not use scm_mem2string.
(scm_i_allocate_string_pointers, scm_i_free_string_pointers): New,
to replace similar code from posix.c, simpos.c, and dynl.c.
(scm_string_append): Use memcpy instead of explicit loop. Do not
use register keyword. Use plain 'char' instead of 'unsigned
char'.
* configure.in (guile_cv_have_uint32_t): Look also in
`stdint.h' for uint32_t.
2002-01-28 Stefan Jahn <stefan@lkcc.org>
* symbols.c (scm_c_symbol2str): New function, replacement for
`gh_scm2newsymbol()'.
* strings.c (scm_c_substring2str): New function. Proper
replacement for `gh_get_substr()'.
* socket.c: Include `stdint.h' if available for the `uint32_t'
declaration.
* scmsigs.c (s_scm_sigaction): Initialize `chandler' (inhibits
compiler warning).
* backtrace.c: Include `lang.h' for GUILE_DEBUG conditional.
* strings.c (scm_c_string2str): New function. Converts a
given Scheme string into a C string. Also put in two
THINKME's regarding the malloc policy for the missing converter
routines.
is known to be #f if no entry is found. Thus, use !SCM_FALSEP
instead of SCM_NIMP to test for that case.
* strings.h (SCM_SET_STRING_LENGTH): Cast the length to
scm_t_bits instead of long.
(SCM_NUM2{SIZE,PTRDIFF,SHORT,USHORT,BITS,UBITS,INT,UINT}[_DEF]):
new macros.
* unif.h: type renaming:
scm_array -> scm_array_t
scm_array_dim -> scm_array_dim_t
the old names are deprecated, all in-Guile uses changed.
* tags.h (scm_ubits_t): new typedef, representing unsigned
scm_bits_t.
* stacks.h: type renaming:
scm_info_frame -> scm_info_frame_t
scm_stack -> scm_stack_t
the old names are deprecated, all in-Guile uses changed.
* srcprop.h: type renaming:
scm_srcprops -> scm_srcprops_t
scm_srcprops_chunk -> scm_srcprops_chunk_t
the old names are deprecated, all in-Guile uses changed.
* gsubr.c, procs.c, print.c, ports.c, read.c, rdelim.c, ramap.c,
rw.c, smob.c, sort.c, srcprop.c, stacks.c, strings.c, strop.c,
strorder.c, strports.c, struct.c, symbols.c, unif.c, values.c,
vectors.c, vports.c, weaks.c:
various int/size_t -> size_t/scm_bits_t changes.
* random.h: type renaming:
scm_rstate -> scm_rstate_t
scm_rng -> scm_rng_t
scm_i_rstate -> scm_i_rstate_t
the old names are deprecated, all in-Guile uses changed.
* procs.h: type renaming:
scm_subr_entry -> scm_subr_entry_t
the old name is deprecated, all in-Guile uses changed.
* options.h (scm_option_t.val): unsigned long -> scm_bits_t.
type renaming:
scm_option -> scm_option_t
the old name is deprecated, all in-Guile uses changed.
* objects.c: various long -> scm_bits_t changes.
(scm_i_make_class_object): flags: unsigned long -> scm_ubits_t
* numbers.h (SCM_FIXNUM_BIT): deprecated, renamed to
SCM_I_FIXNUM_BIT.
* num2integral.i.c: new file, multiply included by numbers.c, used
to "templatize" the various integral <-> num conversion routines.
* numbers.c (scm_mkbig, scm_big2num, scm_adjbig, scm_normbig,
scm_copybig, scm_2ulong2big, scm_dbl2big, scm_big2dbl):
deprecated.
(scm_i_mkbig, scm_i_big2inum, scm_i_adjbig, scm_i_normbig,
scm_i_copybig, scm_i_short2big, scm_i_ushort2big, scm_i_int2big,
scm_i_uint2big, scm_i_long2big, scm_i_ulong2big, scm_i_bits2big,
scm_i_ubits2big, scm_i_size2big, scm_i_ptrdiff2big,
scm_i_long_long2big, scm_i_ulong_long2big, scm_i_dbl2big,
scm_i_big2dbl, scm_short2num, scm_ushort2num, scm_int2num,
scm_uint2num, scm_bits2num, scm_ubits2num, scm_size2num,
scm_ptrdiff2num, scm_num2short, scm_num2ushort, scm_num2int,
scm_num2uint, scm_num2bits, scm_num2ubits, scm_num2ptrdiff,
scm_num2size): new functions.
* modules.c (scm_module_reverse_lookup): i, n: int -> scm_bits_t.x
* load.c: change int -> size_t in various places (where the
variable is used to store a string length).
(search-path): call scm_done_free, not scm_done_malloc.
* list.c (scm_ilength): return a scm_bits_t, not long.
some other {int,long} -> scm_bits_t changes.
* hashtab.c: various [u]int -> scm_bits_t changes.
scm_ihashx_closure -> scm_ihashx_closure_t (and made a typedef).
(scm_ihashx): n: uint -> scm_bits_t
use scm_bits2num instead of scm_ulong2num.
* gsubr.c: various int -> scm_bits_t changes.
* gh_data.c (gh_scm2double): no loss of precision any more.
* gh.h (gh_str2scm): len: int -> size_t
(gh_{get,set}_substr): start: int -> scm_bits_t,
len: int -> size_t
(gh_<num>2scm): n: int -> scm_bits_t
(gh_*vector_length): return scm_[u]size_t, not unsigned long.
(gh_length): return scm_bits_t, not unsigned long.
* fports.h: type renaming:
scm_fport -> scm_fport_t
the old name is deprecated, all in-Guile uses changed.
* fports.c (fport_fill_input): count: int -> scm_bits_t
(fport_flush): init_size, remaining, count: int -> scm_bits_t
* debug.h (scm_lookup_cstr, scm_lookup_soft, scm_evstr): removed
those prototypes, as the functions they prototype don't exist.
* fports.c (default_buffer_size): int -> size_t
(scm_fport_buffer_add): read_size, write_size: int -> scm_bits_t
default_size: int -> size_t
(scm_setvbuf): csize: int -> scm_bits_t
* fluids.c (n_fluids): int -> scm_bits_t
(grow_fluids): old_length, i: int -> scm_bits_t
(next_fluid_num, scm_fluid_ref, scm_fluid_set_x): n: int ->
scm_bits_t
(scm_c_with_fluids): flen, vlen: int -> scm_bits_t
* filesys.c (s_scm_open_fdes): changed calls to SCM_NUM2LONG to
the new and shiny SCM_NUM2INT.
* extensions.c: extension -> extension_t (and made a typedef).
* eval.h (SCM_IFRAME): cast to scm_bits_t, not int. just so
there are no nasty surprises if/when the various deeply magic tag
bits move somewhere else.
* eval.c: changed the locals used to store results of SCM_IFRAME,
scm_ilength and such to be of type scm_bits_t (and not int/long).
(iqq): depth, edepth: int -> scm_bits_t
(scm_eval_stack): int -> scm_bits_t
(SCM_CEVAL): various vars are not scm_bits_t instead of int.
(check_map_args, scm_map, scm_for_each): len: long -> scm_bits_t
i: int -> scm_bits_t
* environments.c: changed the many calls to scm_ulong2num to
scm_ubits2num.
(import_environment_fold): proc_as_ul: ulong -> scm_ubits_t
* dynwind.c (scm_dowinds): delta: long -> scm_bits_t
* debug.h: type renaming:
scm_debug_info -> scm_debug_info_t
scm_debug_frame -> scm_debug_frame_t
the old names are deprecated, all in-Guile uses changed.
(scm_debug_eframe_size): int -> scm_bits_t
* debug.c (scm_init_debug): use scm_c_define instead of the
deprecated scm_define.
* continuations.h: type renaming:
scm_contregs -> scm_contregs_t
the old name is deprecated, all in-Guile uses changed.
(scm_contregs_t.num_stack_items): size_t -> scm_bits_t
(scm_contregs_t.num_stack_items): ulong -> scm_ubits_t
* continuations.c (scm_make_continuation): change the type of
stack_size form long to scm_bits_t.
* ports.h: type renaming:
scm_port_rw_active -> scm_port_rw_active_t (and made a typedef)
scm_port -> scm_port_t
scm_ptob_descriptor -> scm_ptob_descriptor_t
the old names are deprecated, all in-Guile uses changed.
(scm_port_t.entry): int -> scm_bits_t.
(scm_port_t.line_number): int -> long.
(scm_port_t.putback_buf_size): int -> size_t.
* __scm.h (long_long, ulong_long): deprecated (they pollute the
global namespace and have little value besides that).
(SCM_BITS_LENGTH): new, is the bit size of scm_bits_t (i.e. of an
SCM handle).
(ifdef spaghetti): include sys/types.h and sys/stdtypes.h, if they
exist (for size_t & ptrdiff_t)
(scm_sizet): deprecated.
* Makefile.am (noinst_HEADERS): add num2integral.i.c
* error.c, gh_data.c, ports.c, script.c, strop.c: include <string.h>.
* strings.c (scm_string_ref): make the 2nd argument compulsory.
previously it defaulted to zero for no good reason that I can see.
use a local variable for SCM_INUM (k). replace
SCM_VALIDATE_INUM_DEF with SCM_VALIDATE_INUM_COPY.
(scm_makfromstr): cosmetic changes.
(scm_string): Accept only chars in the list, not strings, for
conformance to R5RS (particularly for list->string, which is
supposed to be the inverse of string->list.) remove
SCM_DEFER_INTS/SCM_ALLOW_INTS, which is unnecessary since
scm_makstr handles the cell allocation. when reporting wrong-type
arg, don't report the position as 1.
* posix.c (scm_init_posix): intern PIPE_BUF if it's defined.
* boot-9.scm (find-and-link-dynamic-module): pass strings, not symbols,
to string-append.
SCM_SLOPPY_CONSP and SCM_SLOPPY_NCONSP. (SCM_CONSP) Define this
in terms of SCM_SLOPPY_NCONSP instead of repeating the
expression.
* symbols.h (SCM_SLOPPY_SUBSTRP, SCM_SUBSTRP): Added former, and
define latter in terms of sloppy variant.
* strings.h (SCM_SLOPPY_STRINGP, SCM_STRINGP): Added former, and
define latter in terms of sloppy variant.
* scm_validate.h (SCM_MAKE_VALIDATE): Added this macro to factor
out the commonality of the various basic SCM_VALIDATE_foop
macros. Use SCM_MAKE_VALIDATE macro where possible. Fix
SCM_VALIDATE_INT_COPY to not use scm_num2ulong -- that does
coercion to an integer which is more advanced than desired and
SCM_NUM2ULONG provides that functionality. Use SCM_ASSERT_RANGE
appropriately for the various _MIN, _MAX, _RANGE macros. Drop
some superfluous "SCM_NIMP &&" where possible. Eliminate obsoleted
SCM_VALIDATE_NIMCONS (SCM_VALIDATE_CONS now does the NIMP test as
part of its SCM_CONSP test).
* socket.c, ports.c, pairs.c, list.c, lang.c, async.c: Use
SCM_VALIDATE_CONS, not obsoleted SCM_VALIDATE_NIMCONS.
newline. A bit faster, and definitely hairier.
(scm_read_line): Count newlines here instead.
* strings.c (scm_take_str): New function.
(scm_take0str): Reimplement in terms of scm_take_str. * strings.h
(scm_take_str): New declaration. * ioext.c (scm_read_line): Use
scm_take_str, to avoid copying the string.
Add some simple-minded support for line buffered ports.
* ports.h (SCM_BUFLINE): New flag for ports.
* init.c (scm_init_standard_ports): Request line-buffering on
the standard output port.
* * ports.c (scm_mode_bits): Recognize 'l' as a request for line
buffering.
(scm_putc, scm_puts, scm_lfwrite): If the port is line-buffered,
and there's a newline to be written, flush the port.
* ports.c: (scm_lseek): clear buffers even if just reading current
position.
* fports.c (local_fclose): call local_fflush unconditionally.
(various): don't use the scm_must... memory procs.
* ports.h (scm_port): make read_pos a pointer to const.
strports.c: take care of rw_active and rw_randow.
fports.c: scm_fport_drain_input: removed. do it all in ports.c.
strports.c (scm_mkstrport): check that pos is reasonable.
ioext.c (scm_ftell, scm_fseek): use lseek.
(SCM_CLEAR_BUFFERS): macro deleted.
ioext.c (redirect_port: use ptob fflush, read_flush.
ports.h (scm_ptobfuns): add ftruncate.
ports.c (scm_newptob): set ftruncate.
adjust ptob tables.
* ports.c (scm_ftruncate): new procedure.
fports.c (local_ftrunate), strports.c (str_ftruncate): new procs.
strports.c (st_seek, st_grow_port): new procs.
fports.h (scm_port): change size types from int to off_t.
ports.c (scm_init_ports): initialise the seek symbols here
instead of in ioext.c.
strports.c (scm_call_with_output_string): start with an empty
string, so seek and ftruncate can be used.
* ports.h (scm_ptobfuns): add a read_flush procedure which is the
equivalent to fflush for the read buffer.
* ports.c (scm_newptob): set read_flush.
ports.c (void_port_ptob): set read_flush.
fports.c (local_read_flush): new proc. add to ptob.
strport.c (st_read_flush): likewise.
vport.c (sf_read_flush): likewise.
fports.h (struct scm_fport): remove random member. there's nothing
left but fdes. leaving it as a struct to allow for future changes.
fports.c: replace usage of scm_fport::random with scm_port::rw_random.
ports.c: (scm_putc, scm_puts, scm_lfwrite): call the read_flush
ptob proc if the read buffer is filled.
* ports.h (scm_port): add a rw_random member and replace
reading and writing members with rw_active member.
SCM_PORT_READ/SCM_PORT_WRITE: new values.
* ports.h (struct scm_port_table): add writing and reading members
to replace write_needs_seek: it isn't good enough for non-fports.
ports.c, ioext.c, fports.c: corresponding changes.
(struct scm_port_table): give it a typedef and rename to scm_port.
ports.c, fports.c, strports.c, vports.c, ioext.c, ports.h:
corresponding changes.
* ports.c (scm_newptob): bugfix: set seek member.
* * (scm_lseek): new procedure, using code from ioext.c:scm_fseek
and generalised to all port types.
* scmsigs.c (scm_init_scmsigs): set the SA_RESTART flag for all
signals (it was only being done for handlers installed from Scheme).
Otherwise (for example) SIGSTOP followed by SIGCONT on an interpreter
waiting for input caused an EINTR error from read.
* ports.h (struct scm_port_table): make all the char members
unsigned, so they convert to int without becoming negative if large.
* fports.c (scm_fdes_wait_for_input): forgot to check compilation
with threads enabled. rename this procedure to
fport_wait_for_input and take a port instead of a fdes.
use scm_fport_input_waiting_p instead of scm_fdes_waiting_p.
* readline.c (scm_readline): Applied a patch from Greg Harvey to
get readline support working again: use fdopen to get FILE objects.
* gc.c (scm_init_storage): install an atexit proc to flush the
ports.
(cleanup): the new proc. it sets a global variable which can be
checked by the ptob flush procs to avoid trying to throw
exceptions during exit. not very pleasant but it seems more reliable.
* fports.c (local_fflush): check terminating variable and if set
don't throw exception.
* CHECKME: that the atexit proc is installed if unexec used.
* throw.c (scm_handle_by_message): don't flush all ports here.
it still causes bus errors.
* fports.h (SCM_FPORT_CLEAR_BUFFERS): rename to SCM_CLEAR_BUFFERS
and move to ioext.c.
* fports.c (scm_fdes_waiting_p): merged into fport_input_waiting_p.
* ports.c (scm_char_ready_p): check the port buffer and call the
ptob entry if needed.
* ports.h (scm_ptobfuns): input_waiting_p added. change all the
ptob initialisers. use it in char-ready
* ioext.c (scm_do_read_line): moved from ports.c. make it static.
* vports.c (sfflush): modified to write a char (since softports
currently use shortbuf.)
* fports.c (scm_standard_stream_to_port): moved to init.c and
made static.
* init.c (scm_init_standard_ports): make stdout and stderr
unbuffered if connected to a terminal. with stdio they
were line-buffered by default.
* ports.h (scm_ptobfuns): change fflush return to void.
change flush proc definitions.
* strports.c (scm_call_with_output_string): get size from
buffer instead of port stream.
(scm_strprint_obj): likewise.
(st_flush): new proc.
* ports.h (struct scm_port_table): added write_end member,
as an optimisation. set it where write_buf_size is set.
* ports.h (struct scm_port_table): change stream from void *
back to SCM. SCM presumably must be large enough to hold a
pointer (and probably vice versa but who knows.)
(SCM_SSTREAM): deleted. change users back to SCM_STREAM.
(scm_puts): rewritten
* fports.c (local_ffwrite, local_fputs): removed.
* strports.c (stputc, stputs, stwrite): dyked out (FIXME)
* vports.c (sfputc, sfputs, sfwrite) likewise.
* ports.c (write_void_port, puts_void_port): removed.
(putc_void_port, getc_void_port, fgets_void_port): likewise.
* ports.c (scm_lfwrite): rewritten using fport.c version.
* fports.c (local_fputc): deleted.
* ports.c (scm_add_to_port_table): initialise write_needs_seek.
* ports.h (scm_ptobfuns): add seek function pointer.
* fports.c: set it to local_seek, new procedure.
* fports.h (SCM_MAYBE_DRAIN_INPUT): moved to ports.c.
use ptob for seek. take ptob instead of fport arg.
* ports.h (struct scm_port_table): new member write_needs_seek,
replaces reading member in fport struct.
* vports.c (sfgetc): store the getted char into the buffer.
rename to sf_fill_buffer and install it for fill-buffer in ptob.
the Scheme interface is still a procedure that gets a char.
(scm_make_soft_port): set up the port buffer (shortbuf).
* fports.c (local_fgetc, local_fgets): deleted.
* strports.c (stgetc): likewise.
* ports.c: scm_generic_fgets: likewise.
* ports.h (scm_ptobfuns): add fill_buffer.
* ports.c (scm_newptob): assign it.
* strports.c (scm_mkstrport): set up the buffer.
put just the string into the stream, not cons (pos stream).
(stfill_buffer): new proc.
* ports.h: fport buffer moved into port table: to be
used for all port types.
* throw.c (scm_handle_by_message): flush ports at exit.
* socket.c (scm_sock_fd_to_port): use scm_fdes_to_port.
(scm_getsockopt, scm_setsockopt, scm_shutdown, scm_connect,
scm_bind, scm_listen, scm_accept, scm_getsockname,
scm_getpeername, scm_recv, scm_send, scm_recvfrom,
scm_sendto,
use SCM_FPORT_FDES. use SCM_OPFPORTP not SCM_FPORTP.
* posix.c (scm_getgroups): use SCM_ALLOW/DEFER_INTS.
(scm_ttyname): use SCM_FPORT_FDES.
(scm_tcgetpgrp, scm_tcsetpgrp): likewise.
* ioext.c (scm_isatty_p): use SCM_FPORT_FDES.
(scm_fdes_to_ports): modified.
(scm_fdopen): use scm_fdes_to_port.
* ports.c (scm_init_ports): don't try to flush ports using
atexit(). it's too late, errors will cause SEGV.
* fports.c (scm_fport_buffer_add): new procedure.
* fports.h (SCM_FDES_RANDOM_P): new macro. use it in
scm_fdes_to_port and scm_redirect_port.
* ioext.c (scm_redirect_port): use setvbuf to set buffers in the
new port. reset fp->random.
* fports.c (scm_fdes_to_port), ports.c (scm_void_port),
filesys.c (scm_opendir):
restore defer interrupts while the port is constructed.
* (scm_setvbuf): if mode is _IOFBF and size is not supplied,
derive buffer size from fdes or use a default.
(scm_fdes_to_port): use setvbuf instead of creating the buffers
directly.
vports.c (various places): use SCM_SSTREAM.
strports.c: likewise.
* gdbint.c: likewise.
* ports.h (SCM_SSTREAM): new macro.
* fports.c (scm_input_waiting_p): use scm_return_first, since port
may be removed from the stack by the tail call to scm_fdes_waiting_p.
* fports.h (SCM_CLEAR_BUFFERS): new macro.
* ports.c (scm_force_output): call scm_fflush.
* print.c (scm_newline): don't check errno for EPIPE (it wouldn't
* reach this point.) don't flush port (if scm_cur_outp).
* fports.h (SCM_FPORT_FDES): new macro.
* vports.c (sfflush): don't need to set errno.
* ports.c: install scm_flush_all_ports to be run on exit.
ports.c fports.c ioext.c posix.c socket.c net_db.c filesys.c:
removed all uses of SCM_DEFER/ALLOW ints for now. they were mainly
just protecting errno. some may need to be put back.
* scmsigs.c (take_signal): save and restore errno while this
proc runs.
*fports.c (print_pipe_port, local_pclose, scm_pipob): deleted.
* open-pipe, close-pipe are emulated in (ice-9 popen)
ports.c (scm_ports_prehistory): don't init scm_pipob.
ports.h (scm_tc16_pipe): deleted.
posix.c (scm_open_pipe, scm_close_pipe): deleted.
* ioext.c (scm_primitive_move_to_fdes): use fport.
* fport.c (scm_fport_fill_buffer): flush write buffer if needed.
change arg type from scm_fport to SCM port.
fport.h (SCM_SETFDES): removed.
(SCM_MAYBE_DRAIN_INPUT): new macro.
* ioext.c (scm_dup_to_fdes): use SCM_FSTREAM.
(scm_ftell): always use lseek and account for the buffer.
(scm_fileno): use fport buffer.
(scm_fseek): clear fport buffers. always use lseek.
* posix.c (scm_pipe): use fport buffer.
* unif.c: include fports.h instead of genio.h.
* fports.c (scm_fdes_wait_for_input, scm_fport_fill_buffer): new
procedures.
(local_fgetc): use them.
(local_ffwrite): use buffer.
(local_fgets): use buffer.
(scm_setbuf0): deleted.
(scm_setvbuf): set the buffer.
(scm_setfileno): deleted.
(scm_evict_ports): set fdes directly.
* (scm_freopen): deleted. doesn't seem useful in Guile.
(scm_stdio_to_port): deleted.
fports.h (struct scm_fport): add shortbuf member to avoid separate
code for unbuffered ports.
(SCM_FPORTP, SCM_OPFPORTP, SCM_OPINFPORTP, SCM_OPOUTFPORTP): moved
from ports.h.
* genio.c, genio.h: move contents into ports.c, ports.h. The
division wasn't useful.
* fports.c, fports.h (scm_fport_drain_input): new procedure.
* ports.c (scm_drain_input): call scm_fport_drain_input.
* scm_fdes_waiting_p: new procedure.
* fports.c (scm_fdes_to_port): allocate read and/or write buffers.
(scm_input_waiting_p): check the buffer.
(local_fgetc, local_fflush, local_fputc): likewise.
* fports.h (scm_fport): read/write_buf,_pos,_buf_end,,_buf_size:
new members.
* init.c (scm_init_standard_ports): pass fdes instead of FILE *.
* * ports.c (scm_drain_input): new procedure.
ports.h: prototype.
* fports.c (FPORT_READ_SAFE, FPORT_WRITE_SAFE, FPORT_ALL_OKAY,
pre_read, pre_write): removed.
(local_fputc, local_fputs, local_ffwrite): use write, not stdio.
(scm_standard_stream_to_port): change first arg from FILE * to
int fdes.
(local_fflush): flush fdes, not FILE *.
* fports.h (SCM_NOFTELL): removed.
* genio.c, ports.c: don't include filesys.h.
* genio.c (scm_getc): don't use scm_internal_select if FPORT.
do it in fports.c:local_fgetc.
* genio.c: don't use SCM_SYSCALL when calling ptob procedures.
do it where it's needed in the port smobs.
* filesys.c (scm_input_waiting_p): moved to fports.c, stdio
buffer support removed. take SCM arg, not FILE *.
* filesys.h: prototype moved too.
* fports.c (scm_fdes_to_port): new procedure.
(local_fgetc): use read not fgetc.
(local_fclose): use close, not fclose.
(local_fgets): use read, not fgets
* fports.h: prototype for scm_fdes_to_port.
* fports.h (scm_fport): new struct.
* fports.c (scm_open_file): use open, not fopen.
#include fcntl.h
* ports.h (struct scm_port_table): change stream from SCM to void *.
* ports.c (scm_add_to_port_table): check for memory allocation error.
(scm_prinport): remove MSDOS hair.
(scm_void_port): set stream to 0 instead of SCM_BOOL_F.
(scm_close_port): don't throw errors: do it in fports.c.
