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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 | |
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 | ||
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 JB |
83 | |
84 | static int sfputc SCM_P ((int c, SCM p)); | |
85 | ||
0f2d19dd JB |
86 | static int |
87 | sfputc (c, p) | |
88 | int c; | |
89 | SCM p; | |
0f2d19dd JB |
90 | { |
91 | scm_apply (SCM_VELTS (p)[0], SCM_MAKICHR (c), scm_listofnull); | |
92 | errno = 0; | |
93 | return c; | |
94 | } | |
95 | ||
1cc91f1b JB |
96 | |
97 | static scm_sizet sfwrite SCM_P ((char *str, scm_sizet siz, scm_sizet num, SCM p)); | |
98 | ||
0f2d19dd JB |
99 | static scm_sizet |
100 | sfwrite (str, siz, num, p) | |
101 | char *str; | |
102 | scm_sizet siz; | |
103 | scm_sizet num; | |
104 | SCM p; | |
0f2d19dd JB |
105 | { |
106 | SCM sstr; | |
107 | sstr = scm_makfromstr (str, siz * num, 0); | |
108 | scm_apply (SCM_VELTS (p)[1], sstr, scm_listofnull); | |
109 | errno = 0; | |
110 | return num; | |
111 | } | |
112 | ||
1cc91f1b JB |
113 | |
114 | static int sfputs SCM_P ((char *s, SCM p)); | |
115 | ||
0f2d19dd JB |
116 | static int |
117 | sfputs (s, p) | |
118 | char *s; | |
119 | SCM p; | |
0f2d19dd JB |
120 | { |
121 | sfwrite (s, 1, strlen (s), p); | |
122 | return 0; | |
123 | } | |
124 | ||
1cc91f1b JB |
125 | |
126 | static int sfflush SCM_P ((SCM stream)); | |
127 | ||
0f2d19dd JB |
128 | static int |
129 | sfflush (stream) | |
130 | SCM stream; | |
0f2d19dd JB |
131 | { |
132 | SCM f = SCM_VELTS (stream)[2]; | |
133 | if (SCM_BOOL_F == f) | |
134 | return 0; | |
135 | f = scm_apply (f, SCM_EOL, SCM_EOL); | |
136 | errno = 0; | |
137 | return SCM_BOOL_F == f ? EOF : 0; | |
138 | } | |
139 | ||
1cc91f1b JB |
140 | |
141 | static int sfgetc SCM_P ((SCM p)); | |
142 | ||
0f2d19dd JB |
143 | static int |
144 | sfgetc (p) | |
145 | SCM p; | |
0f2d19dd JB |
146 | { |
147 | SCM ans; | |
148 | ans = scm_apply (SCM_VELTS (p)[3], SCM_EOL, SCM_EOL); | |
149 | errno = 0; | |
150 | if (SCM_FALSEP (ans) || SCM_EOF_VAL == ans) | |
151 | return EOF; | |
152 | SCM_ASSERT (SCM_ICHRP (ans), ans, SCM_ARG1, "getc"); | |
153 | return SCM_ICHR (ans); | |
154 | } | |
155 | ||
1cc91f1b JB |
156 | |
157 | static int sfclose SCM_P ((SCM p)); | |
158 | ||
0f2d19dd JB |
159 | static int |
160 | sfclose (p) | |
161 | SCM p; | |
0f2d19dd JB |
162 | { |
163 | SCM f = SCM_VELTS (p)[4]; | |
164 | if (SCM_BOOL_F == f) | |
165 | return 0; | |
166 | f = scm_apply (f, SCM_EOL, SCM_EOL); | |
167 | errno = 0; | |
168 | return SCM_BOOL_F == f ? EOF : 0; | |
169 | } | |
170 | ||
171 | ||
172 | ||
173 | SCM_PROC(s_make_soft_port, "make-soft-port", 2, 0, 0, scm_make_soft_port); | |
1cc91f1b | 174 | |
0f2d19dd JB |
175 | SCM |
176 | scm_make_soft_port (pv, modes) | |
177 | SCM pv; | |
178 | SCM modes; | |
0f2d19dd JB |
179 | { |
180 | struct scm_port_table * pt; | |
181 | SCM z; | |
182 | SCM_ASSERT (SCM_NIMP (pv) && SCM_VECTORP (pv) && 5 == SCM_LENGTH (pv), pv, SCM_ARG1, s_make_soft_port); | |
183 | SCM_ASSERT (SCM_NIMP (modes) && SCM_STRINGP (modes), modes, SCM_ARG2, s_make_soft_port); | |
184 | SCM_NEWCELL (z); | |
185 | SCM_DEFER_INTS; | |
186 | pt = scm_add_to_port_table (z); | |
a6c64c3c | 187 | SCM_SETCAR (z, scm_tc16_sfport | scm_mode_bits (SCM_CHARS (modes))); |
0f2d19dd JB |
188 | SCM_SETPTAB_ENTRY (z, pt); |
189 | SCM_SETSTREAM (z, pv); | |
190 | SCM_ALLOW_INTS; | |
191 | return z; | |
192 | } | |
193 | ||
1cc91f1b JB |
194 | |
195 | static int noop0 SCM_P ((SCM stream)); | |
196 | ||
0f2d19dd JB |
197 | static int |
198 | noop0 (stream) | |
1cc91f1b | 199 | SCM stream; |
0f2d19dd JB |
200 | { |
201 | return 0; | |
202 | } | |
203 | ||
204 | ||
205 | scm_ptobfuns scm_sfptob = | |
206 | { | |
207 | scm_markstream, | |
208 | noop0, | |
209 | prinsfpt, | |
210 | 0, | |
211 | sfputc, | |
212 | sfputs, | |
213 | sfwrite, | |
214 | sfflush, | |
215 | sfgetc, | |
216 | sfclose | |
217 | }; | |
218 | ||
219 | ||
1cc91f1b | 220 | |
0f2d19dd JB |
221 | void |
222 | scm_init_vports () | |
0f2d19dd JB |
223 | { |
224 | #include "vports.x" | |
225 | } | |
226 |