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guile/libguile/ports.h
Jim Blandy 1717856b4e * __scm.h, alist.c, alist.h, append.c, append.h, appinit.c, 
arbiters.c, arbiters.h, async.c, async.h, boolean.c, boolean.h,
chars.c, chars.h, continuations.c, continuations.h, debug.c,
debug.h, dynwind.c, dynwind.h, eq.c, eq.h, error.c, eval.c,
eval.h, extchrs.c, extchrs.h, fdsocket.c, fdsocket.h, filesys.c,
filesys.h, fports.c, fports.h, gc.c, gdb_interface.h, gdbint.c,
gdbint.h, genio.c, genio.h, gscm.c, gscm.h, gsubr.c, gsubr.h,
hash.c, hash.h, hashtab.c, hashtab.h, init.c, ioext.c, ioext.h,
kw.c, kw.h, libguile.h, mallocs.c, mallocs.h, markers.c,
markers.h, mbstrings.c, mbstrings.h, numbers.c, numbers.h,
objprop.c, objprop.h, options.c, options.h, pairs.c, pairs.h,
ports.c, ports.h, posix.c, posix.h, print.c, print.h, procprop.c,
procprop.h, procs.c, procs.h, ramap.c, ramap.h, read.c, read.h,
root.c, scmsigs.c, scmsigs.h, sequences.c, sequences.h, simpos.c,
simpos.h, smob.c, socket.c, socket.h, srcprop.c, srcprop.h,
stackchk.c, stackchk.h, stime.c, stime.h, strings.c, strings.h,
strop.c, strop.h, strorder.c, strorder.h, strports.c, strports.h,
struct.c, struct.h, symbols.c, symbols.h, tag.c, tag.h, unif.c,
unif.h, variable.c, variable.h, vectors.c, vectors.h, version.c,
version.h, vports.c, vports.h, weaks.c, weaks.h: Use SCM_P to
declare functions with prototypes.  (Patch thanks to Marius
Vollmer.)

More prototype-related changes from Marius Vollmer:
* gdb_interface.h: Wrapped header file in #ifdef/#endif
* gscm.h (gscm_run_scm): Added prototype for `initfn' paramter.
* ports.h (ptobfuns): Added prototypes. This means some casting in
fports.c.
* fports.c: Added casts for initializations, since the functions
are defined to take FILE * as their stream argument, not SCM.
* fdsocket.c, fdsocket.h: Made `init_addr_buffer' static.
* genio.c (scm_gen_puts): Changed `unsigned char *str_data' parameter
to `char *str_data' to conform to prototype.
1996-10-14 01:28:01 +00:00

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/* classes: h_files */
#ifndef PORTSH
#define PORTSH
/* Copyright (C) 1995,1996 Free Software Foundation, Inc.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2, or (at your option)
* any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this software; see the file COPYING. If not, write to
* the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
*
* As a special exception, the Free Software Foundation gives permission
* for additional uses of the text contained in its release of GUILE.
*
* The exception is that, if you link the GUILE library with other files
* to produce an executable, this does not by itself cause the
* resulting executable to be covered by the GNU General Public License.
* Your use of that executable is in no way restricted on account of
* linking the GUILE library code into it.
*
* This exception does not however invalidate any other reasons why
* the executable file might be covered by the GNU General Public License.
*
* This exception applies only to the code released by the
* Free Software Foundation under the name GUILE. If you copy
* code from other Free Software Foundation releases into a copy of
* GUILE, as the General Public License permits, the exception does
* not apply to the code that you add in this way. To avoid misleading
* anyone as to the status of such modified files, you must delete
* this exception notice from them.
*
* If you write modifications of your own for GUILE, it is your choice
* whether to permit this exception to apply to your modifications.
* If you do not wish that, delete this exception notice.
*/
#include "libguile/__scm.h"
enum scm_port_representation_type
{
scm_regular_port,
scm_mb_port,
scm_wchar_port
};
enum scm_string_representation_type
{
scm_regular_string = scm_regular_port,
scm_mb_string = scm_mb_port,
scm_wchar_string = scm_wchar_port
};
struct scm_port_table
{
SCM port; /* Open port. */
int revealed; /* 0 not revealed, > 1 revealed.
* Revealed ports do not get GC'd.
*/
SCM stream;
SCM file_name; /* debugging support. */
int unchr; /* pushed back character, if any */
int line_number; /* debugging support. */
int column_number; /* debugging support. */
enum scm_port_representation_type representation;
};
extern struct scm_port_table **scm_port_table;
extern int scm_port_table_size; /* Number of ports in scm_port_table. */
/* PORT FLAGS
* A set of flags characterizes a port.
*/
#define SCM_OPN (1L<<16) /* Is the port open? */
#define SCM_RDNG (2L<<16) /* Is it a readable port? */
#define SCM_WRTNG (4L<<16) /* Is it writable? */
#define SCM_BUF0 (8L<<16)
#define SCM_CRDY (32L<<16) /* Should char-ready? return #t? */
/* A mask used to clear the char-ready port flag. */
#define SCM_CUC 0x001fffffL
#define SCM_PORTP(x) (SCM_TYP7(x)==scm_tc7_port)
#define SCM_OPPORTP(x) (((0x7f | SCM_OPN) & SCM_CAR(x))==(scm_tc7_port | SCM_OPN))
#define SCM_OPINPORTP(x) (((0x7f | SCM_OPN | SCM_RDNG) & SCM_CAR(x))==(scm_tc7_port | SCM_OPN | SCM_RDNG))
#define SCM_OPOUTPORTP(x) (((0x7f | SCM_OPN | SCM_WRTNG) & SCM_CAR(x))==(scm_tc7_port | SCM_OPN | SCM_WRTNG))
#define SCM_FPORTP(x) (SCM_TYP16S(x)==scm_tc7_port)
#define SCM_OPFPORTP(x) (((0xfeff | SCM_OPN) & SCM_CAR(x))==(scm_tc7_port | SCM_OPN))
#define SCM_OPINFPORTP(x) (((0xfeff | SCM_OPN | SCM_RDNG) & SCM_CAR(x))==(scm_tc7_port | SCM_OPN | SCM_RDNG))
#define SCM_OPOUTFPORTP(x) (((0xfeff | SCM_OPN | SCM_WRTNG) & SCM_CAR(x))==(scm_tc7_port | SCM_OPN | SCM_WRTNG))
#define SCM_INPORTP(x) (((0x7f | SCM_RDNG) & SCM_CAR(x))==(scm_tc7_port | SCM_RDNG))
#define SCM_OUTPORTP(x) (((0x7f | SCM_WRTNG) & SCM_CAR(x))==(scm_tc7_port | SCM_WRTNG))
#define SCM_OPENP(x) (SCM_OPN & SCM_CAR(x))
#define SCM_CLOSEDP(x) (!SCM_OPENP(x))
#define SCM_PTAB_ENTRY(x) ((struct scm_port_table *)SCM_CDR(x))
#define SCM_SETPTAB_ENTRY(x,ent) SCM_SETCDR ((x), (SCM)(ent))
#define SCM_STREAM(x) SCM_PTAB_ENTRY(x)->stream
#define SCM_SETSTREAM(x,s) (SCM_PTAB_ENTRY(x)->stream = s)
#define SCM_FILENAME(x) SCM_PTAB_ENTRY(x)->file_name
#define SCM_LINUM(x) SCM_PTAB_ENTRY(x)->line_number
#define SCM_COL(x) SCM_PTAB_ENTRY(x)->column_number
#define SCM_REVEALED(x) SCM_PTAB_ENTRY(x)->revealed
#define SCM_SETREVEALED(x,s) (SCM_PTAB_ENTRY(x)->revealed = s)
#define SCM_PORT_REPRESENTATION(x) SCM_PTAB_ENTRY(x)->representation
#define SCM_SET_PORT_REPRESENTATION(x,s) (SCM_PTAB_ENTRY(x)->representation = s)
#define SCM_CRDYP(port) (SCM_CAR(port) & SCM_CRDY)
#define SCM_CLRDY(port) {SCM_CAR(port) &= SCM_CUC;}
#define SCM_SETRDY(port) {SCM_CAR(port) |= SCM_CRDY;}
#define SCM_CUNGET(c,port) {SCM_PTAB_ENTRY(port)->unchr = c; SCM_SETRDY(port);}
#define SCM_CGETUN(port) (SCM_PTAB_ENTRY(port)->unchr)
#define SCM_INCLINE(port) {SCM_LINUM (port) += 1; SCM_COL (port) = 0;}
#define SCM_INCCOL(port) {SCM_COL (port) += 1;}
#define SCM_TABCOL(port) {SCM_COL (port) += 8 - SCM_COL (port) % 8;}
typedef struct scm_ptobfuns
{
SCM (*mark) SCM_P ((SCM));
int (*free) SCM_P ((SCM));
int (*print) SCM_P ((SCM exp, SCM port, scm_print_state *pstate));
SCM (*equalp) SCM_P ((SCM, SCM));
int (*fputc) SCM_P ((int, SCM stream));
int (*fputs) SCM_P ((char *, SCM stream));
scm_sizet (*fwrite) SCM_P ((char *ptr, scm_sizet size, scm_sizet nitems, SCM stream));
int (*fflush) SCM_P ((SCM stream));
int (*fgetc) SCM_P ((SCM stream));
int (*fclose) SCM_P ((SCM stream));
} scm_ptobfuns;
#define SCM_PTOBNUM(x) (0x0ff & (SCM_CAR(x)>>8));
extern scm_ptobfuns *scm_ptobs;
extern scm_sizet scm_numptob;
extern int scm_port_table_room;
extern SCM scm_markstream SCM_P ((SCM ptr));
extern long scm_newptob SCM_P ((scm_ptobfuns *ptob));
extern void scm_fflush SCM_P ((SCM port));
extern SCM scm_char_ready_p SCM_P ((SCM port));
extern SCM scm_ungetc_char_ready_p SCM_P ((SCM port));
extern SCM scm_current_input_port SCM_P ((void));
extern SCM scm_current_output_port SCM_P ((void));
extern SCM scm_current_error_port SCM_P ((void));
extern SCM scm_set_current_input_port SCM_P ((SCM port));
extern SCM scm_set_current_output_port SCM_P ((SCM port));
extern SCM scm_set_current_error_port SCM_P ((SCM port));
extern struct scm_port_table * scm_add_to_port_table SCM_P ((SCM port));
extern void scm_remove_from_port_table SCM_P ((SCM port));
extern SCM scm_pt_size SCM_P ((void));
extern SCM scm_pt_member SCM_P ((SCM member));
extern int scm_revealed_count SCM_P ((SCM port));
extern SCM scm_port_revealed SCM_P ((SCM port));
extern SCM scm_set_port_revealed_x SCM_P ((SCM port, SCM rcount));
extern SCM scm_close_port SCM_P ((SCM port));
extern SCM scm_close_all_ports_except SCM_P ((SCM ports));
extern SCM scm_input_port_p SCM_P ((SCM x));
extern SCM scm_output_port_p SCM_P ((SCM x));
extern SCM scm_eof_object_p SCM_P ((SCM x));
extern SCM scm_force_output SCM_P ((SCM port));
extern SCM scm_read_char SCM_P ((SCM port));
extern SCM scm_peek_char SCM_P ((SCM port));
extern SCM scm_unread_char SCM_P ((SCM cobj, SCM port));
extern SCM scm_port_line SCM_P ((SCM port));
extern SCM scm_port_column SCM_P ((SCM port));
extern SCM scm_port_filename SCM_P ((SCM port));
extern SCM scm_set_port_filename_x SCM_P ((SCM port, SCM filename));
extern void scm_prinport SCM_P ((SCM exp, SCM port, char *type));
extern void scm_ports_prehistory SCM_P ((void));
extern SCM scm_void_port SCM_P ((char * mode_str));
extern SCM scm_sys_make_void_port SCM_P ((SCM mode));
extern void scm_init_ports SCM_P ((void));
#endif /* PORTSH */
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