| 1 | /* Copyright (C) 1995,1996 Free Software Foundation, Inc. |
| 2 | * |
| 3 | * This program is free software; you can redistribute it and/or modify |
| 4 | * it under the terms of the GNU General Public License as published by |
| 5 | * the Free Software Foundation; either version 2, or (at your option) |
| 6 | * any later version. |
| 7 | * |
| 8 | * This program is distributed in the hope that it will be useful, |
| 9 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 11 | * GNU General Public License for more details. |
| 12 | * |
| 13 | * You should have received a copy of the GNU General Public License |
| 14 | * along with this software; see the file COPYING. If not, write to |
| 15 | * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. |
| 16 | * |
| 17 | * As a special exception, the Free Software Foundation gives permission |
| 18 | * for additional uses of the text contained in its release of GUILE. |
| 19 | * |
| 20 | * The exception is that, if you link the GUILE library with other files |
| 21 | * to produce an executable, this does not by itself cause the |
| 22 | * resulting executable to be covered by the GNU General Public License. |
| 23 | * Your use of that executable is in no way restricted on account of |
| 24 | * linking the GUILE library code into it. |
| 25 | * |
| 26 | * This exception does not however invalidate any other reasons why |
| 27 | * the executable file might be covered by the GNU General Public License. |
| 28 | * |
| 29 | * This exception applies only to the code released by the |
| 30 | * Free Software Foundation under the name GUILE. If you copy |
| 31 | * code from other Free Software Foundation releases into a copy of |
| 32 | * GUILE, as the General Public License permits, the exception does |
| 33 | * not apply to the code that you add in this way. To avoid misleading |
| 34 | * anyone as to the status of such modified files, you must delete |
| 35 | * this exception notice from them. |
| 36 | * |
| 37 | * If you write modifications of your own for GUILE, it is your choice |
| 38 | * whether to permit this exception to apply to your modifications. |
| 39 | * If you do not wish that, delete this exception notice. |
| 40 | */ |
| 41 | \f |
| 42 | |
| 43 | #include <stdio.h> |
| 44 | #include "_scm.h" |
| 45 | |
| 46 | #ifdef HAVE_STRING_H |
| 47 | #include <string.h> |
| 48 | #endif |
| 49 | |
| 50 | \f |
| 51 | |
| 52 | /* {Ports - soft ports} |
| 53 | * |
| 54 | */ |
| 55 | |
| 56 | |
| 57 | #ifdef __STDC__ |
| 58 | static int |
| 59 | prinsfpt (SCM exp, SCM port, int writing) |
| 60 | #else |
| 61 | static int |
| 62 | prinsfpt (exp, port, writing) |
| 63 | SCM exp; |
| 64 | SCM port; |
| 65 | int writing; |
| 66 | #endif |
| 67 | { |
| 68 | scm_prinport (exp, port, "soft"); |
| 69 | return !0; |
| 70 | } |
| 71 | |
| 72 | /* sfputc sfwrite sfputs sfclose |
| 73 | * are called within a SCM_SYSCALL. |
| 74 | * |
| 75 | * So we need to set errno to 0 before returning. sfflush |
| 76 | * may be called within a SCM_SYSCALL. So we need to set errno to 0 |
| 77 | * before returning. |
| 78 | */ |
| 79 | |
| 80 | #ifdef __STDC__ |
| 81 | static int |
| 82 | sfputc (int c, SCM p) |
| 83 | #else |
| 84 | static int |
| 85 | sfputc (c, p) |
| 86 | int c; |
| 87 | SCM p; |
| 88 | #endif |
| 89 | { |
| 90 | scm_apply (SCM_VELTS (p)[0], SCM_MAKICHR (c), scm_listofnull); |
| 91 | errno = 0; |
| 92 | return c; |
| 93 | } |
| 94 | |
| 95 | #ifdef __STDC__ |
| 96 | static scm_sizet |
| 97 | sfwrite (char *str, scm_sizet siz, scm_sizet num, SCM p) |
| 98 | #else |
| 99 | static scm_sizet |
| 100 | sfwrite (str, siz, num, p) |
| 101 | char *str; |
| 102 | scm_sizet siz; |
| 103 | scm_sizet num; |
| 104 | SCM p; |
| 105 | #endif |
| 106 | { |
| 107 | SCM sstr; |
| 108 | sstr = scm_makfromstr (str, siz * num, 0); |
| 109 | scm_apply (SCM_VELTS (p)[1], sstr, scm_listofnull); |
| 110 | errno = 0; |
| 111 | return num; |
| 112 | } |
| 113 | |
| 114 | #ifdef __STDC__ |
| 115 | static int |
| 116 | sfputs (char *s, SCM p) |
| 117 | #else |
| 118 | static int |
| 119 | sfputs (s, p) |
| 120 | char *s; |
| 121 | SCM p; |
| 122 | #endif |
| 123 | { |
| 124 | sfwrite (s, 1, strlen (s), p); |
| 125 | return 0; |
| 126 | } |
| 127 | |
| 128 | #ifdef __STDC__ |
| 129 | static int |
| 130 | sfflush (SCM stream) |
| 131 | #else |
| 132 | static int |
| 133 | sfflush (stream) |
| 134 | SCM stream; |
| 135 | #endif |
| 136 | { |
| 137 | SCM f = SCM_VELTS (stream)[2]; |
| 138 | if (SCM_BOOL_F == f) |
| 139 | return 0; |
| 140 | f = scm_apply (f, SCM_EOL, SCM_EOL); |
| 141 | errno = 0; |
| 142 | return SCM_BOOL_F == f ? EOF : 0; |
| 143 | } |
| 144 | |
| 145 | #ifdef __STDC__ |
| 146 | static int |
| 147 | sfgetc (SCM p) |
| 148 | #else |
| 149 | static int |
| 150 | sfgetc (p) |
| 151 | SCM p; |
| 152 | #endif |
| 153 | { |
| 154 | SCM ans; |
| 155 | ans = scm_apply (SCM_VELTS (p)[3], SCM_EOL, SCM_EOL); |
| 156 | errno = 0; |
| 157 | if (SCM_FALSEP (ans) || SCM_EOF_VAL == ans) |
| 158 | return EOF; |
| 159 | SCM_ASSERT (SCM_ICHRP (ans), ans, SCM_ARG1, "getc"); |
| 160 | return SCM_ICHR (ans); |
| 161 | } |
| 162 | |
| 163 | #ifdef __STDC__ |
| 164 | static int |
| 165 | sfclose (SCM p) |
| 166 | #else |
| 167 | static int |
| 168 | sfclose (p) |
| 169 | SCM p; |
| 170 | #endif |
| 171 | { |
| 172 | SCM f = SCM_VELTS (p)[4]; |
| 173 | if (SCM_BOOL_F == f) |
| 174 | return 0; |
| 175 | f = scm_apply (f, SCM_EOL, SCM_EOL); |
| 176 | errno = 0; |
| 177 | return SCM_BOOL_F == f ? EOF : 0; |
| 178 | } |
| 179 | |
| 180 | |
| 181 | |
| 182 | SCM_PROC(s_make_soft_port, "make-soft-port", 2, 0, 0, scm_make_soft_port); |
| 183 | #ifdef __STDC__ |
| 184 | SCM |
| 185 | scm_make_soft_port (SCM pv, SCM modes) |
| 186 | #else |
| 187 | SCM |
| 188 | scm_make_soft_port (pv, modes) |
| 189 | SCM pv; |
| 190 | SCM modes; |
| 191 | #endif |
| 192 | { |
| 193 | struct scm_port_table * pt; |
| 194 | SCM z; |
| 195 | SCM_ASSERT (SCM_NIMP (pv) && SCM_VECTORP (pv) && 5 == SCM_LENGTH (pv), pv, SCM_ARG1, s_make_soft_port); |
| 196 | SCM_ASSERT (SCM_NIMP (modes) && SCM_STRINGP (modes), modes, SCM_ARG2, s_make_soft_port); |
| 197 | SCM_NEWCELL (z); |
| 198 | SCM_DEFER_INTS; |
| 199 | pt = scm_add_to_port_table (z); |
| 200 | SCM_CAR (z) = scm_tc16_sfport | scm_mode_bits (SCM_CHARS (modes)); |
| 201 | SCM_SETPTAB_ENTRY (z, pt); |
| 202 | SCM_SETSTREAM (z, pv); |
| 203 | SCM_ALLOW_INTS; |
| 204 | return z; |
| 205 | } |
| 206 | |
| 207 | #ifdef __STDC__ |
| 208 | static int |
| 209 | noop0 (FILE *stream) |
| 210 | #else |
| 211 | static int |
| 212 | noop0 (stream) |
| 213 | FILE *stream; |
| 214 | #endif |
| 215 | { |
| 216 | return 0; |
| 217 | } |
| 218 | |
| 219 | |
| 220 | scm_ptobfuns scm_sfptob = |
| 221 | { |
| 222 | scm_markstream, |
| 223 | noop0, |
| 224 | prinsfpt, |
| 225 | 0, |
| 226 | sfputc, |
| 227 | sfputs, |
| 228 | sfwrite, |
| 229 | sfflush, |
| 230 | sfgetc, |
| 231 | sfclose |
| 232 | }; |
| 233 | |
| 234 | |
| 235 | #ifdef __STDC__ |
| 236 | void |
| 237 | scm_init_vports (void) |
| 238 | #else |
| 239 | void |
| 240 | scm_init_vports () |
| 241 | #endif |
| 242 | { |
| 243 | #include "vports.x" |
| 244 | } |
| 245 | |