/* classes: h_files */ #ifndef PORTSH #define PORTSH /* Copyright (C) 1995,1996,1997,1998 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, Inc., 59 Temple Place, Suite 330, * Boston, MA 02111-1307 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" #include "libguile/print.h" #include "libguile/struct.h" 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. */ }; extern struct scm_port_table **scm_port_table; extern int scm_port_table_size; /* Number of ports in scm_port_table. */ #define SCM_EOF_OBJECT_P(x) ((x) == SCM_EOF_VAL) /* PORT FLAGS * A set of flags characterizes a port. * Note that we reserve the bits 1 << 24 and above for use by the * routines in the port's scm_ptobfuns structure. */ #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_NOFTELL (16L<<16) /* Does ftell work on this? Yuck! */ #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_CRDYP(port) (SCM_CAR (port) & SCM_CRDY) #define SCM_CLRDY(port) {SCM_SETAND_CAR (port, SCM_CUC);} #define SCM_SETRDY(port) {SCM_SETOR_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); int (*free) (SCM); int (*print) (SCM exp, SCM port, scm_print_state *pstate); SCM (*equalp) (SCM, SCM); int (*fputc) (int, SCM port); int (*fputs) (char *, SCM port); scm_sizet (*fwrite) SCM_P ((char *ptr, scm_sizet size, scm_sizet nitems, SCM port)); int (*fflush) (SCM port); int (*fgetc) (SCM port); char * (*fgets) (SCM port, int *len); int (*fclose) (SCM port); } scm_ptobfuns; #define SCM_PTOBNUM(x) (0x0ff & (SCM_CAR(x)>>8)) extern scm_ptobfuns *scm_ptobs; extern int 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 SCM scm_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_current_load_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 long scm_mode_bits SCM_P ((char *modes)); extern SCM scm_port_mode SCM_P ((SCM port)); 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_flush_all_ports SCM_P ((void)); 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 char *scm_generic_fgets SCM_P ((SCM port, int *len)); extern SCM scm_port_line SCM_P ((SCM port)); extern SCM scm_set_port_line_x SCM_P ((SCM port, SCM line)); extern SCM scm_port_column SCM_P ((SCM port)); extern SCM scm_set_port_column_x SCM_P ((SCM port, SCM line)); 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)); #ifdef GUILE_DEBUG extern SCM scm_pt_size SCM_P ((void)); extern SCM scm_pt_member SCM_P ((SCM member)); #endif GUILE_DEBUG #endif /* PORTSH */