| 1 | /* classes: h_files */ |
| 2 | |
| 3 | #ifndef PORTSH |
| 4 | #define PORTSH |
| 5 | /* Copyright (C) 1995,1996 Free Software Foundation, Inc. |
| 6 | * |
| 7 | * This program is free software; you can redistribute it and/or modify |
| 8 | * it under the terms of the GNU General Public License as published by |
| 9 | * the Free Software Foundation; either version 2, or (at your option) |
| 10 | * any later version. |
| 11 | * |
| 12 | * This program is distributed in the hope that it will be useful, |
| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 15 | * GNU General Public License for more details. |
| 16 | * |
| 17 | * You should have received a copy of the GNU General Public License |
| 18 | * along with this software; see the file COPYING. If not, write to |
| 19 | * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. |
| 20 | * |
| 21 | * As a special exception, the Free Software Foundation gives permission |
| 22 | * for additional uses of the text contained in its release of GUILE. |
| 23 | * |
| 24 | * The exception is that, if you link the GUILE library with other files |
| 25 | * to produce an executable, this does not by itself cause the |
| 26 | * resulting executable to be covered by the GNU General Public License. |
| 27 | * Your use of that executable is in no way restricted on account of |
| 28 | * linking the GUILE library code into it. |
| 29 | * |
| 30 | * This exception does not however invalidate any other reasons why |
| 31 | * the executable file might be covered by the GNU General Public License. |
| 32 | * |
| 33 | * This exception applies only to the code released by the |
| 34 | * Free Software Foundation under the name GUILE. If you copy |
| 35 | * code from other Free Software Foundation releases into a copy of |
| 36 | * GUILE, as the General Public License permits, the exception does |
| 37 | * not apply to the code that you add in this way. To avoid misleading |
| 38 | * anyone as to the status of such modified files, you must delete |
| 39 | * this exception notice from them. |
| 40 | * |
| 41 | * If you write modifications of your own for GUILE, it is your choice |
| 42 | * whether to permit this exception to apply to your modifications. |
| 43 | * If you do not wish that, delete this exception notice. |
| 44 | */ |
| 45 | \f |
| 46 | |
| 47 | #include <libguile/__scm.h> |
| 48 | #include "smob.h" |
| 49 | |
| 50 | \f |
| 51 | |
| 52 | enum scm_port_representation_type |
| 53 | { |
| 54 | scm_regular_port, |
| 55 | scm_mb_port, |
| 56 | scm_wchar_port |
| 57 | }; |
| 58 | |
| 59 | enum scm_string_representation_type |
| 60 | { |
| 61 | scm_regular_string = scm_regular_port, |
| 62 | scm_mb_string = scm_mb_port, |
| 63 | scm_wchar_string = scm_wchar_port |
| 64 | }; |
| 65 | |
| 66 | |
| 67 | struct scm_port_table |
| 68 | { |
| 69 | SCM port; /* Open port. */ |
| 70 | int revealed; /* 0 not revealed, > 1 revealed. |
| 71 | * Revealed ports do not get GC'd. |
| 72 | */ |
| 73 | |
| 74 | SCM stream; |
| 75 | SCM file_name; |
| 76 | int unchr; /* pushed back character, if any */ |
| 77 | |
| 78 | int line_number; |
| 79 | int column_number; |
| 80 | |
| 81 | enum scm_port_representation_type representation; |
| 82 | }; |
| 83 | |
| 84 | extern struct scm_port_table **scm_port_table; |
| 85 | extern scm_port_table_size; /* Number of ports in scm_port_table. */ |
| 86 | |
| 87 | |
| 88 | \f |
| 89 | |
| 90 | /* PORT FLAGS |
| 91 | * A set of flags caracterizes a port. |
| 92 | */ |
| 93 | #define SCM_OPN (1L<<16) /* Is the port open? */ |
| 94 | #define SCM_RDNG (2L<<16) /* Is it a readable port? */ |
| 95 | #define SCM_WRTNG (4L<<16) /* Is it writable? */ |
| 96 | #define SCM_BUF0 (8L<<16) |
| 97 | #define SCM_CRDY (32L<<16) /* Should char-ready? return #t? */ |
| 98 | |
| 99 | /* A mask used to clear the char-ready port flag. */ |
| 100 | #define SCM_CUC 0x001fffffL |
| 101 | |
| 102 | #define SCM_PORTP(x) (SCM_TYP7(x)==scm_tc7_port) |
| 103 | #define SCM_OPPORTP(x) (((0x7f | SCM_OPN) & SCM_CAR(x))==(scm_tc7_port | SCM_OPN)) |
| 104 | #define SCM_OPINPORTP(x) (((0x7f | SCM_OPN | SCM_RDNG) & SCM_CAR(x))==(scm_tc7_port | SCM_OPN | SCM_RDNG)) |
| 105 | #define SCM_OPOUTPORTP(x) (((0x7f | SCM_OPN | SCM_WRTNG) & SCM_CAR(x))==(scm_tc7_port | SCM_OPN | SCM_WRTNG)) |
| 106 | #define SCM_FPORTP(x) (SCM_TYP16S(x)==scm_tc7_port) |
| 107 | #define SCM_OPFPORTP(x) (((0xfeff | SCM_OPN) & SCM_CAR(x))==(scm_tc7_port | SCM_OPN)) |
| 108 | #define SCM_OPINFPORTP(x) (((0xfeff | SCM_OPN | SCM_RDNG) & SCM_CAR(x))==(scm_tc7_port | SCM_OPN | SCM_RDNG)) |
| 109 | #define SCM_OPOUTFPORTP(x) (((0xfeff | SCM_OPN | SCM_WRTNG) & SCM_CAR(x))==(scm_tc7_port | SCM_OPN | SCM_WRTNG)) |
| 110 | |
| 111 | #define SCM_INPORTP(x) (((0x7f | SCM_RDNG) & SCM_CAR(x))==(scm_tc7_port | SCM_RDNG)) |
| 112 | #define SCM_OUTPORTP(x) (((0x7f | SCM_WRTNG) & SCM_CAR(x))==(scm_tc7_port | SCM_WRTNG)) |
| 113 | #define SCM_OPENP(x) (SCM_OPN & SCM_CAR(x)) |
| 114 | #define SCM_CLOSEDP(x) (!SCM_OPENP(x)) |
| 115 | #define SCM_PTAB_ENTRY(x) ((struct scm_port_table *)SCM_CDR(x)) |
| 116 | #define SCM_SETPTAB_ENTRY(x,ent) SCM_SETCDR ((x), (SCM)(ent)) |
| 117 | #define SCM_STREAM(x) SCM_PTAB_ENTRY(x)->stream |
| 118 | #define SCM_SETSTREAM(x,s) (SCM_PTAB_ENTRY(x)->stream = s) |
| 119 | #define SCM_LINUM(x) SCM_PTAB_ENTRY(x)->line_number |
| 120 | #define SCM_COL(x) SCM_PTAB_ENTRY(x)->column_number |
| 121 | #define SCM_REVEALED(x) SCM_PTAB_ENTRY(x)->revealed |
| 122 | #define SCM_SETREVEALED(x,s) (SCM_PTAB_ENTRY(x)->revealed = s) |
| 123 | #define SCM_PORT_REPRESENTATION(x) SCM_PTAB_ENTRY(x)->representation |
| 124 | #define SCM_SET_PORT_REPRESENTATION(x,s) (SCM_PTAB_ENTRY(x)->representation = s) |
| 125 | #define SCM_CRDYP(port) (SCM_CAR(port) & SCM_CRDY) |
| 126 | #define SCM_CLRDY(port) {SCM_CAR(port) &= SCM_CUC;} |
| 127 | #define SCM_SETRDY(port) {SCM_CAR(port) |= SCM_CRDY;} |
| 128 | #define SCM_CUNGET(c,port) {SCM_PTAB_ENTRY(port)->unchr = c; SCM_SETRDY(port);} |
| 129 | #define SCM_CGETUN(port) (SCM_PTAB_ENTRY(port)->unchr) |
| 130 | |
| 131 | #define SCM_INCLINE(port) {SCM_LINUM (port) += 1; SCM_COL (port) = 0;} |
| 132 | #define SCM_INCCOL(port) {SCM_COL (port) += 1;} |
| 133 | #define SCM_TABCOL(port) {SCM_COL (port) += (SCM_COL (port) + 1) % 8;} |
| 134 | |
| 135 | |
| 136 | |
| 137 | \f |
| 138 | |
| 139 | extern scm_ptobfuns *scm_ptobs; |
| 140 | extern scm_sizet scm_numptob; |
| 141 | extern int scm_port_table_room; |
| 142 | |
| 143 | \f |
| 144 | #ifdef __STDC__ |
| 145 | extern SCM scm_markstream (SCM ptr); |
| 146 | extern long scm_newptob (scm_ptobfuns *ptob); |
| 147 | extern void scm_fflush (SCM port); |
| 148 | extern SCM scm_char_ready_p (SCM port); |
| 149 | extern SCM scm_ungetc_char_ready_p (SCM port); |
| 150 | extern SCM scm_current_input_port (void); |
| 151 | extern SCM scm_current_output_port (void); |
| 152 | extern SCM scm_current_error_port (void); |
| 153 | extern SCM scm_set_current_input_port (SCM port); |
| 154 | extern SCM scm_set_current_output_port (SCM port); |
| 155 | extern SCM scm_set_current_error_port (SCM port); |
| 156 | extern struct scm_port_table * scm_add_to_port_table (SCM port); |
| 157 | extern void scm_remove_from_port_table (SCM port); |
| 158 | extern SCM scm_pt_size (void); |
| 159 | extern SCM scm_pt_member (SCM member); |
| 160 | extern int scm_revealed_count (SCM port); |
| 161 | extern SCM scm_port_revealed (SCM port); |
| 162 | extern SCM scm_set_port_revealed_x (SCM port, SCM rcount); |
| 163 | extern SCM scm_close_port (SCM port); |
| 164 | extern SCM scm_input_port_p (SCM x); |
| 165 | extern SCM scm_output_port_p (SCM x); |
| 166 | extern SCM scm_eof_object_p (SCM x); |
| 167 | extern SCM scm_force_output (SCM port); |
| 168 | extern SCM scm_read_char (SCM port); |
| 169 | extern SCM scm_peek_char (SCM port); |
| 170 | extern SCM scm_unread_char (SCM cobj, SCM port); |
| 171 | extern SCM scm_line_number (SCM port); |
| 172 | extern SCM scm_column_number (SCM port); |
| 173 | extern SCM scm_port_file_name (SCM port); |
| 174 | extern void scm_prinport (SCM exp, SCM port, char *type); |
| 175 | extern void scm_ports_prehistory (void); |
| 176 | extern SCM scm_void_port (char * mode_str); |
| 177 | extern SCM scm_sys_make_void_port (SCM mode); |
| 178 | extern void scm_init_ports (void); |
| 179 | |
| 180 | #else /* STDC */ |
| 181 | extern SCM scm_markstream (); |
| 182 | extern long scm_newptob (); |
| 183 | extern void scm_fflush (); |
| 184 | extern SCM scm_char_ready_p (); |
| 185 | extern SCM scm_ungetc_char_ready_p (); |
| 186 | extern SCM scm_current_input_port (); |
| 187 | extern SCM scm_current_output_port (); |
| 188 | extern SCM scm_current_error_port (); |
| 189 | extern SCM scm_set_current_input_port (); |
| 190 | extern SCM scm_set_current_output_port (); |
| 191 | extern SCM scm_set_current_error_port (); |
| 192 | extern struct scm_port_table * scm_add_to_port_table (); |
| 193 | extern void scm_remove_from_port_table (); |
| 194 | extern SCM scm_pt_size (); |
| 195 | extern SCM scm_pt_member (); |
| 196 | extern int scm_revealed_count (); |
| 197 | extern SCM scm_port_revealed (); |
| 198 | extern SCM scm_set_port_revealed_x (); |
| 199 | extern SCM scm_close_port (); |
| 200 | extern SCM scm_input_port_p (); |
| 201 | extern SCM scm_output_port_p (); |
| 202 | extern SCM scm_eof_object_p (); |
| 203 | extern SCM scm_force_output (); |
| 204 | extern SCM scm_read_char (); |
| 205 | extern SCM scm_peek_char (); |
| 206 | extern SCM scm_unread_char (); |
| 207 | extern SCM scm_line_number (); |
| 208 | extern SCM scm_column_number (); |
| 209 | extern SCM scm_port_file_name (); |
| 210 | extern void scm_prinport (); |
| 211 | extern void scm_ports_prehistory (); |
| 212 | extern SCM scm_void_port (); |
| 213 | extern SCM scm_sys_make_void_port (); |
| 214 | extern void scm_init_ports (); |
| 215 | |
| 216 | #endif /* STDC */ |
| 217 | |
| 218 | |
| 219 | |
| 220 | |
| 221 | |
| 222 | |
| 223 | |
| 224 | |
| 225 | |
| 226 | |
| 227 | |
| 228 | |
| 229 | #endif /* PORTSH */ |