Commit | Line | Data |
---|---|---|
0f2d19dd JB |
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 | |
82892bed JB |
15 | * the Free Software Foundation, Inc., 59 Temple Place, Suite 330, |
16 | * Boston, MA 02111-1307 USA | |
0f2d19dd JB |
17 | * |
18 | * As a special exception, the Free Software Foundation gives permission | |
19 | * for additional uses of the text contained in its release of GUILE. | |
20 | * | |
21 | * The exception is that, if you link the GUILE library with other files | |
22 | * to produce an executable, this does not by itself cause the | |
23 | * resulting executable to be covered by the GNU General Public License. | |
24 | * Your use of that executable is in no way restricted on account of | |
25 | * linking the GUILE library code into it. | |
26 | * | |
27 | * This exception does not however invalidate any other reasons why | |
28 | * the executable file might be covered by the GNU General Public License. | |
29 | * | |
30 | * This exception applies only to the code released by the | |
31 | * Free Software Foundation under the name GUILE. If you copy | |
32 | * code from other Free Software Foundation releases into a copy of | |
33 | * GUILE, as the General Public License permits, the exception does | |
34 | * not apply to the code that you add in this way. To avoid misleading | |
35 | * anyone as to the status of such modified files, you must delete | |
36 | * this exception notice from them. | |
37 | * | |
38 | * If you write modifications of your own for GUILE, it is your choice | |
39 | * whether to permit this exception to apply to your modifications. | |
82892bed | 40 | * If you do not wish that, delete this exception notice. */ |
0f2d19dd JB |
41 | \f |
42 | ||
43 | #include <stdio.h> | |
44 | #include "_scm.h" | |
20e6290e JB |
45 | #include "eval.h" |
46 | #include "chars.h" | |
47 | #include "fports.h" | |
48 | ||
49 | #include "vports.h" | |
0f2d19dd | 50 | |
95b88819 GH |
51 | #ifdef HAVE_STRING_H |
52 | #include <string.h> | |
53 | #endif | |
54 | ||
0f2d19dd JB |
55 | \f |
56 | ||
57 | /* {Ports - soft ports} | |
58 | * | |
59 | */ | |
60 | ||
61 | ||
1cc91f1b JB |
62 | |
63 | static int prinsfpt SCM_P ((SCM exp, SCM port, scm_print_state *pstate)); | |
64 | ||
0f2d19dd | 65 | static int |
1cc91f1b | 66 | prinsfpt (exp, port, pstate) |
0f2d19dd JB |
67 | SCM exp; |
68 | SCM port; | |
1cc91f1b | 69 | scm_print_state *pstate; |
0f2d19dd JB |
70 | { |
71 | scm_prinport (exp, port, "soft"); | |
72 | return !0; | |
73 | } | |
74 | ||
75 | /* sfputc sfwrite sfputs sfclose | |
76 | * are called within a SCM_SYSCALL. | |
77 | * | |
78 | * So we need to set errno to 0 before returning. sfflush | |
79 | * may be called within a SCM_SYSCALL. So we need to set errno to 0 | |
80 | * before returning. | |
81 | */ | |
82 | ||
1cc91f1b | 83 | |
0f2d19dd | 84 | static int |
0f88a8f3 | 85 | sfputc (int c, SCM port) |
0f2d19dd | 86 | { |
0f88a8f3 JB |
87 | SCM p = SCM_STREAM (port); |
88 | ||
0f2d19dd JB |
89 | scm_apply (SCM_VELTS (p)[0], SCM_MAKICHR (c), scm_listofnull); |
90 | errno = 0; | |
91 | return c; | |
92 | } | |
93 | ||
1cc91f1b | 94 | |
0f2d19dd | 95 | static scm_sizet |
0f88a8f3 | 96 | sfwrite (char *str, scm_sizet siz, scm_sizet num, SCM port) |
0f2d19dd | 97 | { |
0f88a8f3 | 98 | SCM p = SCM_STREAM (port); |
0f2d19dd JB |
99 | SCM sstr; |
100 | sstr = scm_makfromstr (str, siz * num, 0); | |
101 | scm_apply (SCM_VELTS (p)[1], sstr, scm_listofnull); | |
102 | errno = 0; | |
103 | return num; | |
104 | } | |
105 | ||
1cc91f1b | 106 | |
0f2d19dd | 107 | static int |
0f88a8f3 | 108 | sfputs (char *s, SCM port) |
0f2d19dd | 109 | { |
0f88a8f3 | 110 | sfwrite (s, 1, strlen (s), port); |
0f2d19dd JB |
111 | return 0; |
112 | } | |
113 | ||
1cc91f1b | 114 | |
0f2d19dd | 115 | static int |
0f88a8f3 | 116 | sfflush (SCM port) |
0f2d19dd | 117 | { |
0f88a8f3 JB |
118 | SCM stream = SCM_STREAM (port); |
119 | ||
0f2d19dd JB |
120 | SCM f = SCM_VELTS (stream)[2]; |
121 | if (SCM_BOOL_F == f) | |
122 | return 0; | |
123 | f = scm_apply (f, SCM_EOL, SCM_EOL); | |
124 | errno = 0; | |
125 | return SCM_BOOL_F == f ? EOF : 0; | |
126 | } | |
127 | ||
1cc91f1b | 128 | |
0f2d19dd | 129 | static int |
0f88a8f3 | 130 | sfgetc (SCM port) |
0f2d19dd | 131 | { |
0f88a8f3 JB |
132 | SCM p = SCM_STREAM (port); |
133 | ||
0f2d19dd JB |
134 | SCM ans; |
135 | ans = scm_apply (SCM_VELTS (p)[3], SCM_EOL, SCM_EOL); | |
136 | errno = 0; | |
0c32d76c | 137 | if (SCM_FALSEP (ans) || SCM_EOF_OBJECT_P (ans)) |
0f2d19dd JB |
138 | return EOF; |
139 | SCM_ASSERT (SCM_ICHRP (ans), ans, SCM_ARG1, "getc"); | |
140 | return SCM_ICHR (ans); | |
141 | } | |
142 | ||
1cc91f1b | 143 | |
0f2d19dd | 144 | static int |
0f88a8f3 | 145 | sfclose (SCM port) |
0f2d19dd | 146 | { |
0f88a8f3 | 147 | SCM p = SCM_STREAM (port); |
0f2d19dd JB |
148 | SCM f = SCM_VELTS (p)[4]; |
149 | if (SCM_BOOL_F == f) | |
150 | return 0; | |
151 | f = scm_apply (f, SCM_EOL, SCM_EOL); | |
152 | errno = 0; | |
153 | return SCM_BOOL_F == f ? EOF : 0; | |
154 | } | |
155 | ||
156 | ||
157 | ||
158 | SCM_PROC(s_make_soft_port, "make-soft-port", 2, 0, 0, scm_make_soft_port); | |
1cc91f1b | 159 | |
0f2d19dd JB |
160 | SCM |
161 | scm_make_soft_port (pv, modes) | |
162 | SCM pv; | |
163 | SCM modes; | |
0f2d19dd JB |
164 | { |
165 | struct scm_port_table * pt; | |
166 | SCM z; | |
167 | SCM_ASSERT (SCM_NIMP (pv) && SCM_VECTORP (pv) && 5 == SCM_LENGTH (pv), pv, SCM_ARG1, s_make_soft_port); | |
89958ad0 JB |
168 | SCM_ASSERT (SCM_NIMP (modes) && SCM_ROSTRINGP (modes), modes, SCM_ARG2, s_make_soft_port); |
169 | SCM_COERCE_SUBSTR (modes); | |
0f2d19dd JB |
170 | SCM_NEWCELL (z); |
171 | SCM_DEFER_INTS; | |
172 | pt = scm_add_to_port_table (z); | |
89958ad0 | 173 | SCM_SETCAR (z, scm_tc16_sfport | scm_mode_bits (SCM_ROCHARS (modes))); |
0f2d19dd JB |
174 | SCM_SETPTAB_ENTRY (z, pt); |
175 | SCM_SETSTREAM (z, pv); | |
176 | SCM_ALLOW_INTS; | |
177 | return z; | |
178 | } | |
179 | ||
1cc91f1b | 180 | |
0f2d19dd | 181 | static int |
0f88a8f3 | 182 | noop0 (SCM port) |
0f2d19dd JB |
183 | { |
184 | return 0; | |
185 | } | |
186 | ||
187 | ||
188 | scm_ptobfuns scm_sfptob = | |
189 | { | |
190 | scm_markstream, | |
191 | noop0, | |
192 | prinsfpt, | |
193 | 0, | |
194 | sfputc, | |
195 | sfputs, | |
196 | sfwrite, | |
197 | sfflush, | |
198 | sfgetc, | |
3cb988bd | 199 | scm_generic_fgets, |
0f2d19dd JB |
200 | sfclose |
201 | }; | |
202 | ||
203 | ||
1cc91f1b | 204 | |
0f2d19dd JB |
205 | void |
206 | scm_init_vports () | |
0f2d19dd JB |
207 | { |
208 | #include "vports.x" | |
209 | } | |
210 |