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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" | |
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 | ||
62 | #ifdef __STDC__ | |
63 | static int | |
64 | prinsfpt (SCM exp, SCM port, int writing) | |
65 | #else | |
66 | static int | |
67 | prinsfpt (exp, port, writing) | |
68 | SCM exp; | |
69 | SCM port; | |
70 | int writing; | |
71 | #endif | |
72 | { | |
73 | scm_prinport (exp, port, "soft"); | |
74 | return !0; | |
75 | } | |
76 | ||
77 | /* sfputc sfwrite sfputs sfclose | |
78 | * are called within a SCM_SYSCALL. | |
79 | * | |
80 | * So we need to set errno to 0 before returning. sfflush | |
81 | * may be called within a SCM_SYSCALL. So we need to set errno to 0 | |
82 | * before returning. | |
83 | */ | |
84 | ||
85 | #ifdef __STDC__ | |
86 | static int | |
87 | sfputc (int c, SCM p) | |
88 | #else | |
89 | static int | |
90 | sfputc (c, p) | |
91 | int c; | |
92 | SCM p; | |
93 | #endif | |
94 | { | |
95 | scm_apply (SCM_VELTS (p)[0], SCM_MAKICHR (c), scm_listofnull); | |
96 | errno = 0; | |
97 | return c; | |
98 | } | |
99 | ||
100 | #ifdef __STDC__ | |
101 | static scm_sizet | |
102 | sfwrite (char *str, scm_sizet siz, scm_sizet num, SCM p) | |
103 | #else | |
104 | static scm_sizet | |
105 | sfwrite (str, siz, num, p) | |
106 | char *str; | |
107 | scm_sizet siz; | |
108 | scm_sizet num; | |
109 | SCM p; | |
110 | #endif | |
111 | { | |
112 | SCM sstr; | |
113 | sstr = scm_makfromstr (str, siz * num, 0); | |
114 | scm_apply (SCM_VELTS (p)[1], sstr, scm_listofnull); | |
115 | errno = 0; | |
116 | return num; | |
117 | } | |
118 | ||
119 | #ifdef __STDC__ | |
120 | static int | |
121 | sfputs (char *s, SCM p) | |
122 | #else | |
123 | static int | |
124 | sfputs (s, p) | |
125 | char *s; | |
126 | SCM p; | |
127 | #endif | |
128 | { | |
129 | sfwrite (s, 1, strlen (s), p); | |
130 | return 0; | |
131 | } | |
132 | ||
133 | #ifdef __STDC__ | |
134 | static int | |
135 | sfflush (SCM stream) | |
136 | #else | |
137 | static int | |
138 | sfflush (stream) | |
139 | SCM stream; | |
140 | #endif | |
141 | { | |
142 | SCM f = SCM_VELTS (stream)[2]; | |
143 | if (SCM_BOOL_F == f) | |
144 | return 0; | |
145 | f = scm_apply (f, SCM_EOL, SCM_EOL); | |
146 | errno = 0; | |
147 | return SCM_BOOL_F == f ? EOF : 0; | |
148 | } | |
149 | ||
150 | #ifdef __STDC__ | |
151 | static int | |
152 | sfgetc (SCM p) | |
153 | #else | |
154 | static int | |
155 | sfgetc (p) | |
156 | SCM p; | |
157 | #endif | |
158 | { | |
159 | SCM ans; | |
160 | ans = scm_apply (SCM_VELTS (p)[3], SCM_EOL, SCM_EOL); | |
161 | errno = 0; | |
162 | if (SCM_FALSEP (ans) || SCM_EOF_VAL == ans) | |
163 | return EOF; | |
164 | SCM_ASSERT (SCM_ICHRP (ans), ans, SCM_ARG1, "getc"); | |
165 | return SCM_ICHR (ans); | |
166 | } | |
167 | ||
168 | #ifdef __STDC__ | |
169 | static int | |
170 | sfclose (SCM p) | |
171 | #else | |
172 | static int | |
173 | sfclose (p) | |
174 | SCM p; | |
175 | #endif | |
176 | { | |
177 | SCM f = SCM_VELTS (p)[4]; | |
178 | if (SCM_BOOL_F == f) | |
179 | return 0; | |
180 | f = scm_apply (f, SCM_EOL, SCM_EOL); | |
181 | errno = 0; | |
182 | return SCM_BOOL_F == f ? EOF : 0; | |
183 | } | |
184 | ||
185 | ||
186 | ||
187 | SCM_PROC(s_make_soft_port, "make-soft-port", 2, 0, 0, scm_make_soft_port); | |
188 | #ifdef __STDC__ | |
189 | SCM | |
190 | scm_make_soft_port (SCM pv, SCM modes) | |
191 | #else | |
192 | SCM | |
193 | scm_make_soft_port (pv, modes) | |
194 | SCM pv; | |
195 | SCM modes; | |
196 | #endif | |
197 | { | |
198 | struct scm_port_table * pt; | |
199 | SCM z; | |
200 | SCM_ASSERT (SCM_NIMP (pv) && SCM_VECTORP (pv) && 5 == SCM_LENGTH (pv), pv, SCM_ARG1, s_make_soft_port); | |
201 | SCM_ASSERT (SCM_NIMP (modes) && SCM_STRINGP (modes), modes, SCM_ARG2, s_make_soft_port); | |
202 | SCM_NEWCELL (z); | |
203 | SCM_DEFER_INTS; | |
204 | pt = scm_add_to_port_table (z); | |
205 | SCM_CAR (z) = scm_tc16_sfport | scm_mode_bits (SCM_CHARS (modes)); | |
206 | SCM_SETPTAB_ENTRY (z, pt); | |
207 | SCM_SETSTREAM (z, pv); | |
208 | SCM_ALLOW_INTS; | |
209 | return z; | |
210 | } | |
211 | ||
212 | #ifdef __STDC__ | |
213 | static int | |
214 | noop0 (FILE *stream) | |
215 | #else | |
216 | static int | |
217 | noop0 (stream) | |
218 | FILE *stream; | |
219 | #endif | |
220 | { | |
221 | return 0; | |
222 | } | |
223 | ||
224 | ||
225 | scm_ptobfuns scm_sfptob = | |
226 | { | |
227 | scm_markstream, | |
228 | noop0, | |
229 | prinsfpt, | |
230 | 0, | |
231 | sfputc, | |
232 | sfputs, | |
233 | sfwrite, | |
234 | sfflush, | |
235 | sfgetc, | |
236 | sfclose | |
237 | }; | |
238 | ||
239 | ||
240 | #ifdef __STDC__ | |
241 | void | |
242 | scm_init_vports (void) | |
243 | #else | |
244 | void | |
245 | scm_init_vports () | |
246 | #endif | |
247 | { | |
248 | #include "vports.x" | |
249 | } | |
250 |