Commit | Line | Data |
---|---|---|
f2c9fcb0 | 1 | /* Copyright (C) 1995,1996,1998,1999, 2000 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. */ |
1bbd0b84 GB |
41 | |
42 | /* Software engineering face-lift by Greg J. Badros, 11-Dec-1999, | |
43 | gjb@cs.washington.edu, http://www.cs.washington.edu/homes/gjb */ | |
44 | ||
0f2d19dd JB |
45 | \f |
46 | ||
47 | #include <stdio.h> | |
13070bd3 DH |
48 | #include <string.h> |
49 | ||
a0599745 MD |
50 | #include "libguile/_scm.h" |
51 | #include "libguile/libpath.h" | |
52 | #include "libguile/fports.h" | |
53 | #include "libguile/read.h" | |
54 | #include "libguile/eval.h" | |
55 | #include "libguile/throw.h" | |
56 | #include "libguile/alist.h" | |
57 | #include "libguile/dynwind.h" | |
58 | #include "libguile/root.h" | |
59 | #include "libguile/strings.h" | |
f33b174d | 60 | #include "libguile/modules.h" |
a0599745 MD |
61 | |
62 | #include "libguile/validate.h" | |
63 | #include "libguile/load.h" | |
06721500 JB |
64 | |
65 | #include <sys/types.h> | |
66 | #include <sys/stat.h> | |
67 | ||
68 | #ifdef HAVE_UNISTD_H | |
69 | #include <unistd.h> | |
70 | #endif /* HAVE_UNISTD_H */ | |
71 | ||
72 | #ifndef R_OK | |
73 | #define R_OK 4 | |
74 | #endif | |
0f2d19dd JB |
75 | |
76 | \f | |
06721500 | 77 | /* Loading a file, given an absolute filename. */ |
0f2d19dd | 78 | |
26544b96 JB |
79 | /* Hook to run when we load a file, perhaps to announce the fact somewhere. |
80 | Applied to the full name of the file. */ | |
81 | static SCM *scm_loc_load_hook; | |
82 | ||
c7023c69 | 83 | static void |
d7834b91 MD |
84 | swap_port (void *data) |
85 | { | |
86 | SCM *save_port = data, tmp = scm_cur_loadp; | |
87 | scm_cur_loadp = *save_port; | |
88 | *save_port = tmp; | |
89 | } | |
90 | ||
91 | static SCM | |
92 | load (void *data) | |
93 | { | |
54778cd3 | 94 | SCM port = SCM_PACK (data); |
d7834b91 MD |
95 | while (1) |
96 | { | |
54778cd3 | 97 | SCM form = scm_read (port); |
d7834b91 MD |
98 | if (SCM_EOF_OBJECT_P (form)) |
99 | break; | |
f33b174d MD |
100 | /* Ugh! We need to re-check the environment for every form. |
101 | * We should change this in the new module system. | |
102 | */ | |
103 | scm_i_eval_x (form, | |
104 | scm_module_system_booted_p | |
105 | ? (scm_top_level_env | |
106 | (SCM_MODULE_EVAL_CLOSURE (scm_selected_module ()))) | |
107 | : SCM_EOL); | |
d7834b91 MD |
108 | } |
109 | return SCM_UNSPECIFIED; | |
110 | } | |
111 | ||
3b3b36dd | 112 | SCM_DEFINE (scm_primitive_load, "primitive-load", 1, 0, 0, |
1bbd0b84 | 113 | (SCM filename), |
b380b885 MD |
114 | "Load @var{file} and evaluate its contents in the top-level environment.\n" |
115 | "The load paths are not searched; @var{file} must either be a full\n" | |
116 | "pathname or be a pathname relative to the current directory. If the\n" | |
117 | "variable @code{%load-hook} is defined, it should be bound to a procedure\n" | |
118 | "that will be called before any code is loaded. See documentation for\n" | |
119 | "@code{%load-hook} later in this section.") | |
1bbd0b84 | 120 | #define FUNC_NAME s_scm_primitive_load |
0f2d19dd | 121 | { |
26544b96 | 122 | SCM hook = *scm_loc_load_hook; |
a6d9e5ab | 123 | SCM_VALIDATE_STRING (1, filename); |
9a09deb1 | 124 | SCM_ASSERT (SCM_FALSEP (hook) || (SCM_EQ_P (scm_procedure_p (hook), SCM_BOOL_T)), |
26544b96 | 125 | hook, "value of %load-hook is neither a procedure nor #f", |
1bbd0b84 | 126 | FUNC_NAME); |
26544b96 | 127 | |
54778cd3 | 128 | if (! SCM_FALSEP (hook)) |
26544b96 JB |
129 | scm_apply (hook, scm_listify (filename, SCM_UNDEFINED), SCM_EOL); |
130 | ||
1bbd0b84 | 131 | { /* scope */ |
d7834b91 | 132 | SCM port, save_port; |
0f2d19dd JB |
133 | port = scm_open_file (filename, |
134 | scm_makfromstr ("r", (scm_sizet) sizeof (char), 0)); | |
d7834b91 MD |
135 | save_port = port; |
136 | scm_internal_dynamic_wind (swap_port, | |
137 | load, | |
138 | swap_port, | |
54778cd3 | 139 | (void *) SCM_UNPACK (port), |
d7834b91 | 140 | &save_port); |
0f2d19dd JB |
141 | scm_close_port (port); |
142 | } | |
b59b97ba | 143 | return SCM_UNSPECIFIED; |
0f2d19dd | 144 | } |
1bbd0b84 | 145 | #undef FUNC_NAME |
0f2d19dd JB |
146 | |
147 | \f | |
3feedb00 MD |
148 | /* Builtin path to scheme library files. */ |
149 | #ifdef SCM_PKGDATA_DIR | |
a1ec6916 | 150 | SCM_DEFINE (scm_sys_package_data_dir, "%package-data-dir", 0, 0, 0, |
1bbd0b84 | 151 | (), |
b380b885 MD |
152 | "Return the name of the directory where Scheme packages, modules and\n" |
153 | "libraries are kept. On most Unix systems, this will be\n" | |
154 | "@samp{/usr/local/share/guile}.") | |
1bbd0b84 | 155 | #define FUNC_NAME s_scm_sys_package_data_dir |
3feedb00 MD |
156 | { |
157 | return scm_makfrom0str (SCM_PKGDATA_DIR); | |
158 | } | |
1bbd0b84 | 159 | #undef FUNC_NAME |
3feedb00 MD |
160 | #endif /* SCM_PKGDATA_DIR */ |
161 | ||
e8e9b690 | 162 | #ifdef SCM_LIBRARY_DIR |
a1ec6916 | 163 | SCM_DEFINE (scm_sys_library_dir, "%library-dir", 0,0,0, |
e8e9b690 | 164 | (), |
b380b885 MD |
165 | "Return the directory where the Guile Scheme library files are installed.\n" |
166 | "E.g., may return \"/usr/share/guile/1.3.5\".") | |
e8e9b690 GB |
167 | #define FUNC_NAME s_scm_sys_library_dir |
168 | { | |
169 | return scm_makfrom0str(SCM_LIBRARY_DIR); | |
170 | } | |
171 | #undef FUNC_NAME | |
172 | #endif /* SCM_LIBRARY_DIR */ | |
173 | ||
174 | #ifdef SCM_SITE_DIR | |
a1ec6916 | 175 | SCM_DEFINE (scm_sys_site_dir, "%site-dir", 0,0,0, |
e8e9b690 | 176 | (), |
b380b885 MD |
177 | "Return the directory where the Guile site files are installed.\n" |
178 | "E.g., may return \"/usr/share/guile/site\".") | |
e8e9b690 GB |
179 | #define FUNC_NAME s_scm_sys_site_dir |
180 | { | |
181 | return scm_makfrom0str(SCM_SITE_DIR); | |
182 | } | |
183 | #undef FUNC_NAME | |
184 | #endif /* SCM_SITE_DIR */ | |
185 | ||
186 | ||
187 | ||
3feedb00 | 188 | \f |
06721500 | 189 | /* Initializing the load path, and searching it. */ |
0f2d19dd | 190 | |
26544b96 | 191 | /* List of names of directories we search for files to load. */ |
06721500 JB |
192 | static SCM *scm_loc_load_path; |
193 | ||
26544b96 JB |
194 | /* List of extensions we try adding to the filenames. */ |
195 | static SCM *scm_loc_load_extensions; | |
196 | ||
01cddfc1 JB |
197 | |
198 | /* Parse the null-terminated string PATH as if it were a standard path | |
199 | environment variable (i.e. a colon-separated list of strings), and | |
200 | prepend the elements to TAIL. */ | |
201 | SCM | |
04e8fb0a | 202 | scm_internal_parse_path (char *path, SCM tail) |
01cddfc1 JB |
203 | { |
204 | if (path && path[0] != '\0') | |
205 | { | |
206 | char *scan, *elt_end; | |
207 | ||
208 | /* Scan backwards from the end of the string, to help | |
209 | construct the list in the right order. */ | |
210 | scan = elt_end = path + strlen (path); | |
211 | do { | |
212 | /* Scan back to the beginning of the current element. */ | |
213 | do scan--; | |
214 | while (scan >= path && *scan != ':'); | |
215 | tail = scm_cons (scm_makfromstr (scan + 1, elt_end - (scan + 1), 0), | |
216 | tail); | |
217 | elt_end = scan; | |
218 | } while (scan >= path); | |
219 | } | |
220 | ||
221 | return tail; | |
222 | } | |
223 | ||
224 | ||
a1ec6916 | 225 | SCM_DEFINE (scm_parse_path, "parse-path", 1, 1, 0, |
1bbd0b84 | 226 | (SCM path, SCM tail), |
b380b885 | 227 | "") |
1bbd0b84 | 228 | #define FUNC_NAME s_scm_parse_path |
04e8fb0a | 229 | { |
a6d9e5ab | 230 | SCM_ASSERT (SCM_FALSEP (path) || (SCM_STRINGP (path)), |
04e8fb0a | 231 | path, |
1bbd0b84 | 232 | SCM_ARG1, FUNC_NAME); |
04e8fb0a MD |
233 | if (SCM_UNBNDP (tail)) |
234 | tail = SCM_EOL; | |
235 | return (SCM_FALSEP (path) | |
236 | ? tail | |
34f0f2b8 | 237 | : scm_internal_parse_path (SCM_STRING_CHARS (path), tail)); |
04e8fb0a | 238 | } |
1bbd0b84 | 239 | #undef FUNC_NAME |
04e8fb0a MD |
240 | |
241 | ||
06721500 | 242 | /* Initialize the global variable %load-path, given the value of the |
3feedb00 | 243 | SCM_SITE_DIR and SCM_LIBRARY_DIR preprocessor symbols and the |
01cddfc1 | 244 | GUILE_LOAD_PATH environment variable. */ |
0f2d19dd | 245 | void |
06721500 JB |
246 | scm_init_load_path () |
247 | { | |
248 | SCM path = SCM_EOL; | |
249 | ||
3feedb00 | 250 | #ifdef SCM_LIBRARY_DIR |
55407879 TP |
251 | path = scm_listify (scm_makfrom0str (SCM_SITE_DIR), |
252 | scm_makfrom0str (SCM_LIBRARY_DIR), | |
253 | scm_makfrom0str (SCM_PKGDATA_DIR), | |
254 | SCM_UNDEFINED); | |
3feedb00 | 255 | #endif /* SCM_LIBRARY_DIR */ |
06721500 | 256 | |
04e8fb0a | 257 | path = scm_internal_parse_path (getenv ("GUILE_LOAD_PATH"), path); |
01cddfc1 | 258 | |
06721500 JB |
259 | *scm_loc_load_path = path; |
260 | } | |
261 | ||
04e8fb0a | 262 | SCM scm_listofnullstr; |
06721500 | 263 | |
04e8fb0a | 264 | /* Search PATH for a directory containing a file named FILENAME. |
06721500 | 265 | The file must be readable, and not a directory. |
26544b96 | 266 | If we find one, return its full filename; otherwise, return #f. |
56384176 JB |
267 | If FILENAME is absolute, return it unchanged. |
268 | If given, EXTENSIONS is a list of strings; for each directory | |
269 | in PATH, we search for FILENAME concatenated with each EXTENSION. */ | |
3b3b36dd | 270 | SCM_DEFINE (scm_search_path, "search-path", 2, 1, 0, |
1bbd0b84 | 271 | (SCM path, SCM filename, SCM extensions), |
b380b885 | 272 | "") |
1bbd0b84 | 273 | #define FUNC_NAME s_scm_search_path |
06721500 | 274 | { |
56384176 | 275 | char *filename_chars; |
06721500 | 276 | int filename_len; |
56384176 JB |
277 | size_t max_path_len; /* maximum length of any PATH element */ |
278 | size_t max_ext_len; /* maximum length of any EXTENSIONS element */ | |
06721500 | 279 | |
3b3b36dd | 280 | SCM_VALIDATE_LIST (1,path); |
a6d9e5ab | 281 | SCM_VALIDATE_STRING (2, filename); |
04e8fb0a | 282 | if (SCM_UNBNDP (extensions)) |
56384176 | 283 | extensions = SCM_EOL; |
04e8fb0a | 284 | else |
3b3b36dd | 285 | SCM_VALIDATE_LIST (3,extensions); |
56384176 | 286 | |
34f0f2b8 | 287 | filename_chars = SCM_STRING_CHARS (filename); |
a6d9e5ab | 288 | filename_len = SCM_STRING_LENGTH (filename); |
06721500 | 289 | |
26544b96 | 290 | /* If FILENAME is absolute, return it unchanged. */ |
56384176 | 291 | if (filename_len >= 1 && filename_chars[0] == '/') |
26544b96 JB |
292 | return filename; |
293 | ||
294 | /* Find the length of the longest element of path. */ | |
295 | { | |
296 | SCM walk; | |
297 | ||
298 | max_path_len = 0; | |
a6d9e5ab | 299 | for (walk = path; !SCM_NULLP (walk); walk = SCM_CDR (walk)) |
26544b96 JB |
300 | { |
301 | SCM elt = SCM_CAR (walk); | |
a6d9e5ab | 302 | SCM_ASSERT (SCM_STRINGP (elt), elt, |
04e8fb0a | 303 | "path is not a list of strings", |
1bbd0b84 | 304 | FUNC_NAME); |
a6d9e5ab DH |
305 | if (SCM_STRING_LENGTH (elt) > max_path_len) |
306 | max_path_len = SCM_STRING_LENGTH (elt); | |
26544b96 JB |
307 | } |
308 | } | |
309 | ||
56384176 JB |
310 | /* If FILENAME has an extension, don't try to add EXTENSIONS to it. */ |
311 | { | |
312 | char *endp; | |
313 | ||
314 | for (endp = filename_chars + filename_len - 1; | |
315 | endp >= filename_chars; | |
316 | endp--) | |
317 | { | |
318 | if (*endp == '.') | |
319 | { | |
320 | /* This filename already has an extension, so cancel the | |
321 | list of extensions. */ | |
322 | extensions = SCM_EOL; | |
323 | break; | |
324 | } | |
325 | else if (*endp == '/') | |
326 | /* This filename has no extension, so keep the current list | |
327 | of extensions. */ | |
328 | break; | |
329 | } | |
330 | } | |
331 | ||
26544b96 JB |
332 | /* Find the length of the longest element of the load extensions |
333 | list. */ | |
1bbd0b84 | 334 | { /* scope */ |
26544b96 JB |
335 | SCM walk; |
336 | ||
337 | max_ext_len = 0; | |
a6d9e5ab | 338 | for (walk = extensions; !SCM_NULLP (walk); walk = SCM_CDR (walk)) |
26544b96 JB |
339 | { |
340 | SCM elt = SCM_CAR (walk); | |
a6d9e5ab | 341 | SCM_ASSERT (SCM_STRINGP (elt), elt, |
04e8fb0a | 342 | "extension list is not a list of strings", |
1bbd0b84 | 343 | FUNC_NAME); |
a6d9e5ab DH |
344 | if (SCM_STRING_LENGTH (elt) > max_ext_len) |
345 | max_ext_len = SCM_STRING_LENGTH (elt); | |
26544b96 JB |
346 | } |
347 | } | |
348 | ||
06721500 JB |
349 | SCM_DEFER_INTS; |
350 | ||
1bbd0b84 | 351 | { /* scope */ |
56384176 JB |
352 | SCM result = SCM_BOOL_F; |
353 | int buf_size = max_path_len + 1 + filename_len + max_ext_len + 1; | |
1bbd0b84 | 354 | char *buf = SCM_MUST_MALLOC (buf_size); |
06721500 | 355 | |
56384176 JB |
356 | /* This simplifies the loop below a bit. */ |
357 | if (SCM_NULLP (extensions)) | |
358 | extensions = scm_listofnullstr; | |
0a74e31d | 359 | |
56384176 JB |
360 | /* Try every path element. At this point, we know the path is a |
361 | proper list of strings. */ | |
a6d9e5ab | 362 | for (; !SCM_NULLP (path); path = SCM_CDR (path)) |
56384176 JB |
363 | { |
364 | int len; | |
365 | SCM dir = SCM_CAR (path); | |
366 | SCM exts; | |
367 | ||
368 | /* Concatenate the path name and the filename. */ | |
a6d9e5ab | 369 | len = SCM_STRING_LENGTH (dir); |
34f0f2b8 | 370 | memcpy (buf, SCM_STRING_CHARS (dir), len); |
56384176 JB |
371 | if (len >= 1 && buf[len - 1] != '/') |
372 | buf[len++] = '/'; | |
373 | memcpy (buf + len, filename_chars, filename_len); | |
374 | len += filename_len; | |
375 | ||
376 | /* Try every extension. At this point, we know the extension | |
377 | list is a proper, nonempty list of strings. */ | |
a6d9e5ab | 378 | for (exts = extensions; !SCM_NULLP (exts); exts = SCM_CDR (exts)) |
56384176 JB |
379 | { |
380 | SCM ext = SCM_CAR (exts); | |
a6d9e5ab | 381 | int ext_len = SCM_STRING_LENGTH (ext); |
56384176 JB |
382 | struct stat mode; |
383 | ||
384 | /* Concatenate the extension. */ | |
34f0f2b8 | 385 | memcpy (buf + len, SCM_STRING_CHARS (ext), ext_len); |
56384176 JB |
386 | buf[len + ext_len] = '\0'; |
387 | ||
388 | /* If the file exists at all, we should return it. If the | |
389 | file is inaccessible, then that's an error. */ | |
390 | if (stat (buf, &mode) == 0 | |
391 | && ! (mode.st_mode & S_IFDIR)) | |
392 | { | |
393 | result = scm_makfromstr (buf, len + ext_len, 0); | |
394 | goto end; | |
395 | } | |
396 | } | |
397 | } | |
398 | ||
399 | end: | |
400 | scm_must_free (buf); | |
401 | scm_done_malloc (- buf_size); | |
402 | SCM_ALLOW_INTS; | |
403 | return result; | |
404 | } | |
06721500 | 405 | } |
1bbd0b84 | 406 | #undef FUNC_NAME |
06721500 JB |
407 | |
408 | ||
04e8fb0a MD |
409 | /* Search %load-path for a directory containing a file named FILENAME. |
410 | The file must be readable, and not a directory. | |
411 | If we find one, return its full filename; otherwise, return #f. | |
412 | If FILENAME is absolute, return it unchanged. */ | |
3b3b36dd | 413 | SCM_DEFINE (scm_sys_search_load_path, "%search-load-path", 1, 0, 0, |
1bbd0b84 | 414 | (SCM filename), |
b380b885 MD |
415 | "Search @var{%load-path} for @var{file}, which must be readable by the\n" |
416 | "current user. If @var{file} is found in the list of paths to search or\n" | |
417 | "is an absolute pathname, return its full pathname. Otherwise, return\n" | |
418 | "@code{#f}. Filenames may have any of the optional extensions in the\n" | |
419 | "@code{%load-extensions} list; @code{%search-load-path} will try each\n" | |
420 | "extension automatically.") | |
1bbd0b84 | 421 | #define FUNC_NAME s_scm_sys_search_load_path |
04e8fb0a MD |
422 | { |
423 | SCM path = *scm_loc_load_path; | |
424 | SCM exts = *scm_loc_load_extensions; | |
a6d9e5ab | 425 | SCM_VALIDATE_STRING (1, filename); |
1bbd0b84 | 426 | |
04e8fb0a | 427 | SCM_ASSERT (scm_ilength (path) >= 0, path, "load path is not a proper list", |
1bbd0b84 | 428 | FUNC_NAME); |
04e8fb0a MD |
429 | SCM_ASSERT (scm_ilength (exts) >= 0, exts, |
430 | "load extension list is not a proper list", | |
1bbd0b84 GB |
431 | FUNC_NAME); |
432 | return scm_search_path (path, filename, exts); | |
04e8fb0a | 433 | } |
1bbd0b84 | 434 | #undef FUNC_NAME |
04e8fb0a MD |
435 | |
436 | ||
3b3b36dd | 437 | SCM_DEFINE (scm_primitive_load_path, "primitive-load-path", 1, 0, 0, |
1bbd0b84 | 438 | (SCM filename), |
b380b885 MD |
439 | "Search @var{%load-path} for @var{file} and load it into the top-level\n" |
440 | "environment. If @var{file} is a relative pathname and is not found in\n" | |
441 | "the list of search paths, an error is signalled.") | |
1bbd0b84 | 442 | #define FUNC_NAME s_scm_primitive_load_path |
06721500 | 443 | { |
26544b96 JB |
444 | SCM full_filename; |
445 | ||
a6d9e5ab | 446 | SCM_VALIDATE_STRING (1, filename); |
26544b96 JB |
447 | |
448 | full_filename = scm_sys_search_load_path (filename); | |
449 | ||
dbece3a2 GH |
450 | if (SCM_FALSEP (full_filename)) |
451 | { | |
a6d9e5ab | 452 | int absolute = (SCM_STRING_LENGTH (filename) >= 1 |
34f0f2b8 | 453 | && SCM_STRING_CHARS (filename)[0] == '/'); |
5d2d2ffc | 454 | SCM_MISC_ERROR ((absolute |
70d63753 GB |
455 | ? "Unable to load file ~S" |
456 | : "Unable to find file ~S in load path"), | |
26544b96 | 457 | scm_listify (filename, SCM_UNDEFINED)); |
dbece3a2 | 458 | } |
26544b96 | 459 | |
deca31e1 | 460 | return scm_primitive_load (full_filename); |
06721500 | 461 | } |
1bbd0b84 | 462 | #undef FUNC_NAME |
06721500 | 463 | |
f33b174d MD |
464 | #if SCM_DEBUG_DEPRECATED == 0 |
465 | ||
466 | /* Eval now copies source properties, so this function is no longer required. | |
b35d06a4 MD |
467 | */ |
468 | ||
469 | SCM_SYMBOL (scm_end_of_file_key, "end-of-file"); | |
470 | ||
a1ec6916 | 471 | SCM_DEFINE (scm_read_and_eval_x, "read-and-eval!", 0, 1, 0, |
1bbd0b84 | 472 | (SCM port), |
b380b885 MD |
473 | "Read a form from @var{port} (standard input by default), and evaluate it\n" |
474 | "(memoizing it in the process) in the top-level environment. If no data\n" | |
475 | "is left to be read from @var{port}, an @code{end-of-file} error is\n" | |
476 | "signalled.") | |
1bbd0b84 | 477 | #define FUNC_NAME s_scm_read_and_eval_x |
b35d06a4 | 478 | { |
deca31e1 | 479 | SCM form = scm_read (port); |
0c32d76c | 480 | if (SCM_EOF_OBJECT_P (form)) |
b35d06a4 | 481 | scm_ithrow (scm_end_of_file_key, SCM_EOL, 1); |
f33b174d | 482 | return scm_eval_x (form, scm_selected_module ()); |
b35d06a4 | 483 | } |
1bbd0b84 | 484 | #undef FUNC_NAME |
b35d06a4 | 485 | |
f33b174d MD |
486 | #endif |
487 | ||
06721500 | 488 | \f |
e151bee6 | 489 | /* Information about the build environment. */ |
06721500 | 490 | |
e151bee6 JB |
491 | /* Initialize the scheme variable %guile-build-info, based on data |
492 | provided by the Makefile, via libpath.h. */ | |
493 | static void | |
494 | init_build_info () | |
495 | { | |
496 | static struct { char *name; char *value; } info[] = SCM_BUILD_INFO; | |
497 | SCM *loc = SCM_CDRLOC (scm_sysintern ("%guile-build-info", SCM_EOL)); | |
c7023c69 | 498 | unsigned int i; |
e151bee6 JB |
499 | |
500 | for (i = 0; i < (sizeof (info) / sizeof (info[0])); i++) | |
38ae064c | 501 | *loc = scm_acons (scm_str2symbol (info[i].name), |
e151bee6 JB |
502 | scm_makfrom0str (info[i].value), |
503 | *loc); | |
504 | } | |
505 | ||
506 | ||
507 | \f | |
0f2d19dd JB |
508 | void |
509 | scm_init_load () | |
0f2d19dd | 510 | { |
04e8fb0a MD |
511 | scm_listofnullstr = scm_permanent_object (SCM_LIST1 (scm_nullstr)); |
512 | scm_loc_load_path = SCM_CDRLOC (scm_sysintern ("%load-path", SCM_EOL)); | |
26544b96 | 513 | scm_loc_load_extensions |
04e8fb0a | 514 | = SCM_CDRLOC (scm_sysintern ("%load-extensions", |
0a74e31d MD |
515 | scm_listify (scm_makfrom0str (".scm"), |
516 | scm_makfrom0str (""), | |
04e8fb0a MD |
517 | SCM_UNDEFINED))); |
518 | scm_loc_load_hook = SCM_CDRLOC (scm_sysintern ("%load-hook", SCM_BOOL_F)); | |
06721500 | 519 | |
e151bee6 JB |
520 | init_build_info (); |
521 | ||
8dc9439f | 522 | #ifndef SCM_MAGIC_SNARFER |
a0599745 | 523 | #include "libguile/load.x" |
8dc9439f | 524 | #endif |
0f2d19dd | 525 | } |
89e00824 ML |
526 | |
527 | /* | |
528 | Local Variables: | |
529 | c-file-style: "gnu" | |
530 | End: | |
531 | */ |