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7dc6e754 | 1 | /* Copyright (C) 1995, 1996, 1997, 1998 Free Software Foundation, Inc. |
0f2d19dd JB |
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 | 41 | \f |
0f2d19dd JB |
42 | #include <stdio.h> |
43 | #include "_scm.h" | |
20e6290e | 44 | #include "chars.h" |
44e8413c MD |
45 | #ifdef GUILE_ISELECT |
46 | #include "filesys.h" | |
47 | #endif | |
20e6290e JB |
48 | |
49 | #include "genio.h" | |
0f2d19dd | 50 | |
95b88819 GH |
51 | #ifdef HAVE_STRING_H |
52 | #include <string.h> | |
53 | #endif | |
0f2d19dd JB |
54 | \f |
55 | ||
b7f3516f | 56 | void |
0f2d19dd JB |
57 | scm_putc (c, port) |
58 | int c; | |
59 | SCM port; | |
0f2d19dd JB |
60 | { |
61 | scm_sizet i = SCM_PTOBNUM (port); | |
0f88a8f3 | 62 | SCM_SYSCALL ((scm_ptobs[i].fputc) (c, port)); |
0f2d19dd JB |
63 | } |
64 | ||
b7f3516f | 65 | void |
0f2d19dd JB |
66 | scm_puts (s, port) |
67 | char *s; | |
68 | SCM port; | |
0f2d19dd JB |
69 | { |
70 | scm_sizet i = SCM_PTOBNUM (port); | |
0f88a8f3 | 71 | SCM_SYSCALL ((scm_ptobs[i].fputs) (s, port)); |
0f2d19dd JB |
72 | #ifdef TRANSCRIPT_SUPPORT |
73 | if (scm_trans && (port == def_outp || port == cur_errp)) | |
74 | SCM_SYSCALL (fputs (s, scm_trans)); | |
75 | #endif | |
76 | } | |
77 | ||
b7f3516f TT |
78 | void |
79 | scm_lfwrite (ptr, size, port) | |
0f2d19dd JB |
80 | char *ptr; |
81 | scm_sizet size; | |
0f2d19dd | 82 | SCM port; |
0f2d19dd | 83 | { |
0f2d19dd | 84 | scm_sizet i = SCM_PTOBNUM (port); |
0f88a8f3 | 85 | SCM_SYSCALL (scm_ptobs[i].fwrite (ptr, size, 1, port)); |
0f2d19dd JB |
86 | #ifdef TRANSCRIPT_SUPPORT |
87 | if (scm_trans && (port == def_outp || port == cur_errp)) | |
b7f3516f | 88 | SCM_SYSCALL (fwrite (ptr, size, 1, scm_trans)); |
0f2d19dd | 89 | #endif |
0f2d19dd JB |
90 | } |
91 | ||
92 | ||
d68fee48 JB |
93 | void |
94 | scm_fflush (port) | |
95 | SCM port; | |
96 | { | |
97 | scm_sizet i = SCM_PTOBNUM (port); | |
0f88a8f3 | 98 | (scm_ptobs[i].fflush) (port); |
d68fee48 JB |
99 | } |
100 | ||
0f2d19dd JB |
101 | \f |
102 | ||
b7f3516f | 103 | int |
0f2d19dd JB |
104 | scm_getc (port) |
105 | SCM port; | |
0f2d19dd | 106 | { |
1717856b | 107 | SCM f; |
0f2d19dd JB |
108 | int c; |
109 | scm_sizet i; | |
110 | ||
0f2d19dd JB |
111 | /* One char may be stored in the high bits of (car port) orre@nada.kth.se. */ |
112 | if (SCM_CRDYP (port)) | |
113 | { | |
114 | c = SCM_CGETUN (port); | |
b7f3516f | 115 | SCM_CLRDY (port); /* Clear ungetted char */ |
0f2d19dd | 116 | } |
b7f3516f | 117 | else |
0f2d19dd | 118 | { |
b7f3516f TT |
119 | f = SCM_STREAM (port); |
120 | i = SCM_PTOBNUM (port); | |
44e8413c MD |
121 | #ifdef GUILE_ISELECT |
122 | if (SCM_FPORTP (port) && !scm_input_waiting_p ((FILE *) f, "scm_getc")) | |
123 | { | |
124 | int n; | |
125 | SELECT_TYPE readfds; | |
126 | int fd = fileno ((FILE *) f); | |
44e8413c MD |
127 | do |
128 | { | |
a3ec616e | 129 | FD_ZERO (&readfds); |
44e8413c MD |
130 | FD_SET (fd, &readfds); |
131 | n = scm_internal_select (fd + 1, &readfds, NULL, NULL, NULL); | |
132 | } | |
133 | while (n == -1 && errno == EINTR); | |
134 | } | |
135 | #endif | |
0f88a8f3 | 136 | SCM_SYSCALL (c = (scm_ptobs[i].fgetc) (port)); |
b7f3516f | 137 | } |
0f2d19dd | 138 | |
b7f3516f TT |
139 | if (c == '\n') |
140 | { | |
141 | SCM_INCLINE (port); | |
142 | } | |
143 | else if (c == '\t') | |
144 | { | |
145 | SCM_TABCOL (port); | |
146 | } | |
147 | else | |
148 | { | |
149 | SCM_INCCOL (port); | |
0f2d19dd | 150 | } |
b7f3516f TT |
151 | |
152 | return c; | |
0f2d19dd JB |
153 | } |
154 | ||
1717856b | 155 | |
0f2d19dd | 156 | void |
b7f3516f | 157 | scm_ungetc (c, port) |
0f2d19dd JB |
158 | int c; |
159 | SCM port; | |
0f2d19dd | 160 | { |
b7f3516f | 161 | /* SCM_ASSERT(!SCM_CRDYP(port), port, SCM_ARG2, "too many scm_ungetc");*/ |
0f2d19dd JB |
162 | SCM_CUNGET (c, port); |
163 | if (c == '\n') | |
164 | { | |
165 | /* What should col be in this case? | |
166 | * We'll leave it at -1. | |
167 | */ | |
168 | SCM_LINUM (port) -= 1; | |
169 | } | |
170 | else | |
171 | SCM_COL(port) -= 1; | |
172 | } | |
173 | ||
174 | ||
3cb988bd | 175 | char * |
848f2a01 | 176 | scm_do_read_line (port, len) |
3cb988bd | 177 | SCM port; |
848f2a01 | 178 | int *len; |
3cb988bd TP |
179 | { |
180 | char *s; | |
181 | scm_sizet i; | |
182 | ||
183 | i = SCM_PTOBNUM (port); | |
848f2a01 | 184 | SCM_SYSCALL (s = (scm_ptobs[i].fgets) (port, len)); |
5ead5a91 | 185 | |
4eebd8fc JB |
186 | /* We should never get an empty string. Every line has a newline at |
187 | the end, except for the last one. If the last line has no | |
188 | newline and is empty, then that's just an ordinary EOF, and we | |
189 | should have s == NULL. But this seems obscure to me, so we check | |
190 | this here, to protect ourselves from odd port implementations. */ | |
191 | if (s && *len <= 0) | |
192 | abort (); | |
193 | ||
5ead5a91 JB |
194 | /* If we're not at EOF, and there was a newline at the end of the |
195 | string, increment the line counter. */ | |
4eebd8fc | 196 | if (s && s[*len - 1] == '\n') |
af77c5fd JB |
197 | SCM_INCLINE(port); |
198 | ||
3cb988bd TP |
199 | return s; |
200 | } |