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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 | |
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 "unif.h" |
46 | #include "eval.h" | |
cd07a097 | 47 | #include "read.h" |
20e6290e JB |
48 | |
49 | #include "strports.h" | |
0f2d19dd | 50 | |
95b88819 GH |
51 | #ifdef HAVE_STRING_H |
52 | #include <string.h> | |
53 | #endif | |
54 | ||
0f2d19dd JB |
55 | \f |
56 | ||
57 | /* {Ports - string ports} | |
58 | * | |
59 | */ | |
60 | ||
1cc91f1b JB |
61 | |
62 | static int prinstpt SCM_P ((SCM exp, SCM port, scm_print_state *pstate)); | |
63 | ||
0f2d19dd | 64 | static int |
1cc91f1b | 65 | prinstpt (exp, port, pstate) |
0f2d19dd JB |
66 | SCM exp; |
67 | SCM port; | |
1cc91f1b | 68 | scm_print_state *pstate; |
0f2d19dd JB |
69 | { |
70 | scm_prinport (exp, port, "string"); | |
71 | return !0; | |
72 | } | |
73 | ||
1cc91f1b JB |
74 | |
75 | static int stputc SCM_P ((int c, SCM p)); | |
76 | ||
0f2d19dd JB |
77 | static int |
78 | stputc (c, p) | |
79 | int c; | |
80 | SCM p; | |
0f2d19dd JB |
81 | { |
82 | scm_sizet ind = SCM_INUM (SCM_CAR (p)); | |
83 | SCM_DEFER_INTS; | |
84 | if (ind >= SCM_LENGTH (SCM_CDR (p))) | |
85 | scm_vector_set_length_x (SCM_CDR (p), SCM_MAKINUM (ind + (ind >> 1))); | |
86 | SCM_ALLOW_INTS; | |
87 | SCM_CHARS (SCM_CDR (p))[ind] = c; | |
a6c64c3c | 88 | SCM_SETCAR (p, SCM_MAKINUM (ind + 1)); |
0f2d19dd JB |
89 | return c; |
90 | } | |
91 | ||
1cc91f1b JB |
92 | |
93 | static scm_sizet stwrite SCM_P ((char *str, scm_sizet siz, scm_sizet num, SCM p)); | |
94 | ||
0f2d19dd JB |
95 | static scm_sizet |
96 | stwrite (str, siz, num, p) | |
97 | char *str; | |
98 | scm_sizet siz; | |
99 | scm_sizet num; | |
100 | SCM p; | |
0f2d19dd JB |
101 | { |
102 | scm_sizet ind = SCM_INUM (SCM_CAR (p)); | |
103 | scm_sizet len = siz * num; | |
104 | char *dst; | |
105 | SCM_DEFER_INTS; | |
106 | if (ind + len >= SCM_LENGTH (SCM_CDR (p))) | |
107 | scm_vector_set_length_x (SCM_CDR (p), SCM_MAKINUM (ind + len + ((ind + len) >> 1))); | |
108 | SCM_ALLOW_INTS; | |
109 | dst = &(SCM_CHARS (SCM_CDR (p))[ind]); | |
110 | while (len--) | |
111 | dst[len] = str[len]; | |
a6c64c3c | 112 | SCM_SETCAR (p, SCM_MAKINUM (ind + siz * num)); |
0f2d19dd JB |
113 | return num; |
114 | } | |
115 | ||
1cc91f1b JB |
116 | |
117 | static int stputs SCM_P ((char *s, SCM p)); | |
118 | ||
0f2d19dd JB |
119 | static int |
120 | stputs (s, p) | |
121 | char *s; | |
122 | SCM p; | |
0f2d19dd JB |
123 | { |
124 | stwrite (s, 1, strlen (s), p); | |
125 | return 0; | |
126 | } | |
127 | ||
1cc91f1b JB |
128 | |
129 | static int stgetc SCM_P ((SCM p)); | |
130 | ||
0f2d19dd JB |
131 | static int |
132 | stgetc (p) | |
133 | SCM p; | |
0f2d19dd JB |
134 | { |
135 | scm_sizet ind = SCM_INUM (SCM_CAR (p)); | |
136 | if (ind >= SCM_ROLENGTH (SCM_CDR (p))) | |
137 | return EOF; | |
a6c64c3c | 138 | SCM_SETCAR (p, SCM_MAKINUM (ind + 1)); |
0f2d19dd JB |
139 | return SCM_ROUCHARS (SCM_CDR (p))[ind]; |
140 | } | |
141 | ||
1cc91f1b | 142 | |
0f2d19dd JB |
143 | SCM |
144 | scm_mkstrport (pos, str, modes, caller) | |
145 | SCM pos; | |
146 | SCM str; | |
147 | long modes; | |
148 | char * caller; | |
0f2d19dd JB |
149 | { |
150 | SCM z; | |
151 | SCM stream; | |
152 | struct scm_port_table * pt; | |
153 | ||
154 | SCM_ASSERT(SCM_INUMP(pos) && SCM_INUM(pos) >= 0, pos, SCM_ARG1, caller); | |
155 | SCM_ASSERT(SCM_NIMP(str) && SCM_ROSTRINGP(str), str, SCM_ARG1, caller); | |
156 | stream = scm_cons(pos, str); | |
157 | SCM_NEWCELL (z); | |
158 | SCM_DEFER_INTS; | |
159 | pt = scm_add_to_port_table (z); | |
a6c64c3c | 160 | SCM_SETCAR (z, scm_tc16_strport | modes); |
0f2d19dd JB |
161 | SCM_SETPTAB_ENTRY (z, pt); |
162 | SCM_SETSTREAM (z, stream); | |
163 | SCM_ALLOW_INTS; | |
164 | return z; | |
165 | } | |
166 | ||
167 | SCM_PROC(s_call_with_output_string, "call-with-output-string", 1, 0, 0, scm_call_with_output_string); | |
1cc91f1b | 168 | |
0f2d19dd JB |
169 | SCM |
170 | scm_call_with_output_string (proc) | |
171 | SCM proc; | |
0f2d19dd JB |
172 | { |
173 | SCM p; | |
174 | p = scm_mkstrport(SCM_INUM0, scm_make_string(SCM_MAKINUM(30), SCM_UNDEFINED), | |
175 | SCM_OPN | SCM_WRTNG, | |
176 | s_call_with_output_string); | |
177 | scm_apply (proc, p, scm_listofnull); | |
178 | { | |
179 | SCM answer; | |
180 | SCM_DEFER_INTS; | |
181 | answer = scm_makfromstr (SCM_CHARS (SCM_CDR (SCM_STREAM (p))), | |
182 | SCM_INUM (SCM_CAR (SCM_STREAM (p))), | |
183 | 0); | |
184 | SCM_ALLOW_INTS; | |
185 | return answer; | |
186 | } | |
187 | } | |
188 | ||
189 | ||
190 | ||
191 | /* Return a Scheme string obtained by printing a given object. | |
192 | */ | |
193 | ||
1cc91f1b | 194 | |
0f2d19dd JB |
195 | SCM |
196 | scm_strprint_obj (obj) | |
197 | SCM obj; | |
0f2d19dd JB |
198 | { |
199 | SCM str; | |
200 | SCM port; | |
201 | ||
202 | str = scm_makstr (64, 0); | |
203 | port = scm_mkstrport (SCM_MAKINUM (0), str, SCM_OPN | SCM_WRTNG, "scm_strprint_obj"); | |
87818069 | 204 | scm_prin1 (obj, port, 1); |
0f2d19dd JB |
205 | { |
206 | SCM answer; | |
207 | SCM_DEFER_INTS; | |
208 | answer = scm_makfromstr (SCM_CHARS (SCM_CDR (SCM_STREAM (port))), | |
209 | SCM_INUM (SCM_CAR (SCM_STREAM (port))), | |
210 | 0); | |
211 | SCM_ALLOW_INTS; | |
212 | return answer; | |
213 | } | |
214 | } | |
215 | ||
216 | ||
217 | ||
218 | ||
219 | SCM_PROC(s_call_with_input_string, "call-with-input-string", 2, 0, 0, scm_call_with_input_string); | |
1cc91f1b | 220 | |
0f2d19dd JB |
221 | SCM |
222 | scm_call_with_input_string (str, proc) | |
223 | SCM str; | |
224 | SCM proc; | |
0f2d19dd JB |
225 | { |
226 | SCM p = scm_mkstrport(SCM_INUM0, str, SCM_OPN | SCM_RDNG, s_call_with_input_string); | |
227 | return scm_apply (proc, p, scm_listofnull); | |
228 | } | |
229 | ||
1cc91f1b | 230 | |
cd07a097 | 231 | |
a8aa30d8 MD |
232 | /* Given a null-terminated string EXPR containing a Scheme expression |
233 | read it, and return it as an SCM value. */ | |
234 | SCM | |
235 | scm_read_0str (expr) | |
236 | char *expr; | |
237 | { | |
238 | SCM port = scm_mkstrport (SCM_MAKINUM (0), | |
239 | scm_makfrom0str (expr), | |
240 | SCM_OPN | SCM_RDNG, | |
241 | "scm_eval_0str"); | |
242 | SCM form; | |
243 | ||
244 | /* Read expressions from that port; ignore the values. */ | |
deca31e1 | 245 | form = scm_read (port); |
a8aa30d8 MD |
246 | |
247 | scm_close_port (port); | |
248 | return form; | |
249 | } | |
250 | ||
cd07a097 | 251 | /* Given a null-terminated string EXPR containing Scheme program text, |
a8aa30d8 MD |
252 | evaluate it, and return the result of the last expression evaluated. */ |
253 | SCM | |
cd07a097 JB |
254 | scm_eval_0str (expr) |
255 | char *expr; | |
256 | { | |
b377f53e JB |
257 | return scm_eval_string (scm_makfrom0str (expr)); |
258 | } | |
259 | ||
260 | ||
261 | SCM_PROC (s_eval_string, "eval-string", 1, 0, 0, scm_eval_string); | |
262 | ||
263 | SCM | |
264 | scm_eval_string (string) | |
265 | SCM string; | |
266 | { | |
267 | SCM port = scm_mkstrport (SCM_MAKINUM (0), string, SCM_OPN | SCM_RDNG, | |
cd07a097 JB |
268 | "scm_eval_0str"); |
269 | SCM form; | |
b377f53e | 270 | SCM ans = SCM_UNSPECIFIED; |
cd07a097 JB |
271 | |
272 | /* Read expressions from that port; ignore the values. */ | |
0c32d76c | 273 | while (!SCM_EOF_OBJECT_P (form = scm_read (port))) |
a8aa30d8 | 274 | ans = scm_eval_x (form); |
cd07a097 JB |
275 | |
276 | scm_close_port (port); | |
a8aa30d8 | 277 | return ans; |
cd07a097 JB |
278 | } |
279 | ||
280 | ||
b377f53e | 281 | |
1cc91f1b JB |
282 | static int noop0 SCM_P ((SCM stream)); |
283 | ||
0f2d19dd JB |
284 | static int |
285 | noop0 (stream) | |
1cc91f1b | 286 | SCM stream; |
0f2d19dd JB |
287 | { |
288 | return 0; | |
289 | } | |
290 | ||
291 | ||
292 | scm_ptobfuns scm_stptob = | |
293 | { | |
294 | scm_markstream, | |
295 | noop0, | |
296 | prinstpt, | |
297 | 0, | |
298 | stputc, | |
299 | stputs, | |
300 | stwrite, | |
301 | noop0, | |
302 | stgetc, | |
3cb988bd | 303 | scm_generic_fgets, |
0f2d19dd JB |
304 | 0 |
305 | }; | |
306 | ||
307 | ||
1cc91f1b | 308 | |
0f2d19dd JB |
309 | void |
310 | scm_init_strports () | |
0f2d19dd JB |
311 | { |
312 | #include "strports.x" | |
313 | } | |
314 |