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2ade72d7 | 1 | /* Copyright (C) 1995,1996,1998,1999,2000,2001 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 | ||
13070bd3 DH |
47 | #include <string.h> |
48 | ||
a0599745 MD |
49 | #include "libguile/_scm.h" |
50 | #include "libguile/libpath.h" | |
51 | #include "libguile/fports.h" | |
52 | #include "libguile/read.h" | |
53 | #include "libguile/eval.h" | |
54 | #include "libguile/throw.h" | |
55 | #include "libguile/alist.h" | |
56 | #include "libguile/dynwind.h" | |
57 | #include "libguile/root.h" | |
58 | #include "libguile/strings.h" | |
f33b174d | 59 | #include "libguile/modules.h" |
a0599745 MD |
60 | |
61 | #include "libguile/validate.h" | |
62 | #include "libguile/load.h" | |
06721500 JB |
63 | |
64 | #include <sys/types.h> | |
65 | #include <sys/stat.h> | |
66 | ||
67 | #ifdef HAVE_UNISTD_H | |
68 | #include <unistd.h> | |
69 | #endif /* HAVE_UNISTD_H */ | |
70 | ||
71 | #ifndef R_OK | |
72 | #define R_OK 4 | |
73 | #endif | |
0f2d19dd JB |
74 | |
75 | \f | |
06721500 | 76 | /* Loading a file, given an absolute filename. */ |
0f2d19dd | 77 | |
26544b96 JB |
78 | /* Hook to run when we load a file, perhaps to announce the fact somewhere. |
79 | Applied to the full name of the file. */ | |
80 | static SCM *scm_loc_load_hook; | |
81 | ||
c7023c69 | 82 | static void |
d7834b91 MD |
83 | swap_port (void *data) |
84 | { | |
85 | SCM *save_port = data, tmp = scm_cur_loadp; | |
86 | scm_cur_loadp = *save_port; | |
87 | *save_port = tmp; | |
88 | } | |
89 | ||
90 | static SCM | |
91 | load (void *data) | |
92 | { | |
54778cd3 | 93 | SCM port = SCM_PACK (data); |
d7834b91 MD |
94 | while (1) |
95 | { | |
54778cd3 | 96 | SCM form = scm_read (port); |
d7834b91 MD |
97 | if (SCM_EOF_OBJECT_P (form)) |
98 | break; | |
f1b7a066 | 99 | scm_primitive_eval_x (form); |
d7834b91 MD |
100 | } |
101 | return SCM_UNSPECIFIED; | |
102 | } | |
103 | ||
3b3b36dd | 104 | SCM_DEFINE (scm_primitive_load, "primitive-load", 1, 0, 0, |
1bbd0b84 | 105 | (SCM filename), |
67e8151b MG |
106 | "Load the file named @var{filename} and evaluate its contents in\n" |
107 | "the top-level environment. The load paths are not searched;\n" | |
108 | "@var{filename} must either be a full pathname or be a pathname\n" | |
109 | "relative to the current directory. If the variable\n" | |
110 | "@code{%load-hook} is defined, it should be bound to a procedure\n" | |
111 | "that will be called before any code is loaded. See the\n" | |
112 | "documentation for @code{%load-hook} later in this section.") | |
1bbd0b84 | 113 | #define FUNC_NAME s_scm_primitive_load |
0f2d19dd | 114 | { |
26544b96 | 115 | SCM hook = *scm_loc_load_hook; |
a6d9e5ab | 116 | SCM_VALIDATE_STRING (1, filename); |
2ade72d7 DH |
117 | if (!SCM_FALSEP (hook) && !SCM_EQ_P (scm_procedure_p (hook), SCM_BOOL_T)) |
118 | SCM_MISC_ERROR ("value of %load-hook is neither a procedure nor #f", | |
119 | SCM_EOL); | |
26544b96 | 120 | |
54778cd3 | 121 | if (! SCM_FALSEP (hook)) |
e0c08f17 | 122 | scm_apply (hook, SCM_LIST1 (filename), SCM_EOL); |
26544b96 | 123 | |
1bbd0b84 | 124 | { /* scope */ |
d7834b91 | 125 | SCM port, save_port; |
0f2d19dd JB |
126 | port = scm_open_file (filename, |
127 | scm_makfromstr ("r", (scm_sizet) sizeof (char), 0)); | |
d7834b91 MD |
128 | save_port = port; |
129 | scm_internal_dynamic_wind (swap_port, | |
130 | load, | |
131 | swap_port, | |
54778cd3 | 132 | (void *) SCM_UNPACK (port), |
d7834b91 | 133 | &save_port); |
0f2d19dd JB |
134 | scm_close_port (port); |
135 | } | |
b59b97ba | 136 | return SCM_UNSPECIFIED; |
0f2d19dd | 137 | } |
1bbd0b84 | 138 | #undef FUNC_NAME |
0f2d19dd JB |
139 | |
140 | \f | |
3feedb00 MD |
141 | /* Builtin path to scheme library files. */ |
142 | #ifdef SCM_PKGDATA_DIR | |
a1ec6916 | 143 | SCM_DEFINE (scm_sys_package_data_dir, "%package-data-dir", 0, 0, 0, |
1bbd0b84 | 144 | (), |
b380b885 MD |
145 | "Return the name of the directory where Scheme packages, modules and\n" |
146 | "libraries are kept. On most Unix systems, this will be\n" | |
147 | "@samp{/usr/local/share/guile}.") | |
1bbd0b84 | 148 | #define FUNC_NAME s_scm_sys_package_data_dir |
3feedb00 MD |
149 | { |
150 | return scm_makfrom0str (SCM_PKGDATA_DIR); | |
151 | } | |
1bbd0b84 | 152 | #undef FUNC_NAME |
3feedb00 MD |
153 | #endif /* SCM_PKGDATA_DIR */ |
154 | ||
e8e9b690 | 155 | #ifdef SCM_LIBRARY_DIR |
a1ec6916 | 156 | SCM_DEFINE (scm_sys_library_dir, "%library-dir", 0,0,0, |
e8e9b690 | 157 | (), |
b380b885 MD |
158 | "Return the directory where the Guile Scheme library files are installed.\n" |
159 | "E.g., may return \"/usr/share/guile/1.3.5\".") | |
e8e9b690 GB |
160 | #define FUNC_NAME s_scm_sys_library_dir |
161 | { | |
162 | return scm_makfrom0str(SCM_LIBRARY_DIR); | |
163 | } | |
164 | #undef FUNC_NAME | |
165 | #endif /* SCM_LIBRARY_DIR */ | |
166 | ||
167 | #ifdef SCM_SITE_DIR | |
a1ec6916 | 168 | SCM_DEFINE (scm_sys_site_dir, "%site-dir", 0,0,0, |
e8e9b690 | 169 | (), |
b380b885 MD |
170 | "Return the directory where the Guile site files are installed.\n" |
171 | "E.g., may return \"/usr/share/guile/site\".") | |
e8e9b690 GB |
172 | #define FUNC_NAME s_scm_sys_site_dir |
173 | { | |
174 | return scm_makfrom0str(SCM_SITE_DIR); | |
175 | } | |
176 | #undef FUNC_NAME | |
177 | #endif /* SCM_SITE_DIR */ | |
178 | ||
179 | ||
180 | ||
3feedb00 | 181 | \f |
06721500 | 182 | /* Initializing the load path, and searching it. */ |
0f2d19dd | 183 | |
26544b96 | 184 | /* List of names of directories we search for files to load. */ |
06721500 JB |
185 | static SCM *scm_loc_load_path; |
186 | ||
26544b96 JB |
187 | /* List of extensions we try adding to the filenames. */ |
188 | static SCM *scm_loc_load_extensions; | |
189 | ||
01cddfc1 JB |
190 | |
191 | /* Parse the null-terminated string PATH as if it were a standard path | |
192 | environment variable (i.e. a colon-separated list of strings), and | |
193 | prepend the elements to TAIL. */ | |
194 | SCM | |
04e8fb0a | 195 | scm_internal_parse_path (char *path, SCM tail) |
01cddfc1 JB |
196 | { |
197 | if (path && path[0] != '\0') | |
198 | { | |
199 | char *scan, *elt_end; | |
200 | ||
201 | /* Scan backwards from the end of the string, to help | |
202 | construct the list in the right order. */ | |
203 | scan = elt_end = path + strlen (path); | |
204 | do { | |
205 | /* Scan back to the beginning of the current element. */ | |
206 | do scan--; | |
207 | while (scan >= path && *scan != ':'); | |
208 | tail = scm_cons (scm_makfromstr (scan + 1, elt_end - (scan + 1), 0), | |
209 | tail); | |
210 | elt_end = scan; | |
211 | } while (scan >= path); | |
212 | } | |
213 | ||
214 | return tail; | |
215 | } | |
216 | ||
217 | ||
a1ec6916 | 218 | SCM_DEFINE (scm_parse_path, "parse-path", 1, 1, 0, |
1bbd0b84 | 219 | (SCM path, SCM tail), |
d91788cb MG |
220 | "Parse @var{path}, which is expected to be a colon-separated\n" |
221 | "string, into a list and return the resulting list with\n" | |
222 | "@var{tail} appended. If @var{path} is @code{#f}, @var{tail}\n" | |
223 | "is returned.") | |
1bbd0b84 | 224 | #define FUNC_NAME s_scm_parse_path |
04e8fb0a | 225 | { |
a6d9e5ab | 226 | SCM_ASSERT (SCM_FALSEP (path) || (SCM_STRINGP (path)), |
04e8fb0a | 227 | path, |
1bbd0b84 | 228 | SCM_ARG1, FUNC_NAME); |
04e8fb0a MD |
229 | if (SCM_UNBNDP (tail)) |
230 | tail = SCM_EOL; | |
231 | return (SCM_FALSEP (path) | |
232 | ? tail | |
34f0f2b8 | 233 | : scm_internal_parse_path (SCM_STRING_CHARS (path), tail)); |
04e8fb0a | 234 | } |
1bbd0b84 | 235 | #undef FUNC_NAME |
04e8fb0a MD |
236 | |
237 | ||
06721500 | 238 | /* Initialize the global variable %load-path, given the value of the |
3feedb00 | 239 | SCM_SITE_DIR and SCM_LIBRARY_DIR preprocessor symbols and the |
01cddfc1 | 240 | GUILE_LOAD_PATH environment variable. */ |
0f2d19dd | 241 | void |
06721500 JB |
242 | scm_init_load_path () |
243 | { | |
244 | SCM path = SCM_EOL; | |
245 | ||
3feedb00 | 246 | #ifdef SCM_LIBRARY_DIR |
e0c08f17 KN |
247 | path = SCM_LIST3 (scm_makfrom0str (SCM_SITE_DIR), |
248 | scm_makfrom0str (SCM_LIBRARY_DIR), | |
249 | scm_makfrom0str (SCM_PKGDATA_DIR)); | |
3feedb00 | 250 | #endif /* SCM_LIBRARY_DIR */ |
06721500 | 251 | |
04e8fb0a | 252 | path = scm_internal_parse_path (getenv ("GUILE_LOAD_PATH"), path); |
01cddfc1 | 253 | |
06721500 JB |
254 | *scm_loc_load_path = path; |
255 | } | |
256 | ||
04e8fb0a | 257 | SCM scm_listofnullstr; |
06721500 | 258 | |
04e8fb0a | 259 | /* Search PATH for a directory containing a file named FILENAME. |
06721500 | 260 | The file must be readable, and not a directory. |
26544b96 | 261 | If we find one, return its full filename; otherwise, return #f. |
56384176 JB |
262 | If FILENAME is absolute, return it unchanged. |
263 | If given, EXTENSIONS is a list of strings; for each directory | |
264 | in PATH, we search for FILENAME concatenated with each EXTENSION. */ | |
3b3b36dd | 265 | SCM_DEFINE (scm_search_path, "search-path", 2, 1, 0, |
1bbd0b84 | 266 | (SCM path, SCM filename, SCM extensions), |
d91788cb MG |
267 | "Search @var{path} for a directory containing a file named\n" |
268 | "@var{filename}. The file must be readable, and not a directory.\n" | |
269 | "If we find one, return its full filename; otherwise, return\n" | |
270 | "@code{#f}. If @var{filename} is absolute, return it unchanged.\n" | |
271 | "If given, @var{extensions} is a list of strings; for each\n" | |
272 | "directory in @var{path}, we search for @var{filename}\n" | |
273 | "concatenated with each @var{extension}.") | |
1bbd0b84 | 274 | #define FUNC_NAME s_scm_search_path |
06721500 | 275 | { |
56384176 | 276 | char *filename_chars; |
06721500 | 277 | int filename_len; |
56384176 JB |
278 | size_t max_path_len; /* maximum length of any PATH element */ |
279 | size_t max_ext_len; /* maximum length of any EXTENSIONS element */ | |
06721500 | 280 | |
3b3b36dd | 281 | SCM_VALIDATE_LIST (1,path); |
a6d9e5ab | 282 | SCM_VALIDATE_STRING (2, filename); |
04e8fb0a | 283 | if (SCM_UNBNDP (extensions)) |
56384176 | 284 | extensions = SCM_EOL; |
04e8fb0a | 285 | else |
3b3b36dd | 286 | SCM_VALIDATE_LIST (3,extensions); |
56384176 | 287 | |
34f0f2b8 | 288 | filename_chars = SCM_STRING_CHARS (filename); |
a6d9e5ab | 289 | filename_len = SCM_STRING_LENGTH (filename); |
06721500 | 290 | |
26544b96 | 291 | /* If FILENAME is absolute, return it unchanged. */ |
56384176 | 292 | if (filename_len >= 1 && filename_chars[0] == '/') |
26544b96 JB |
293 | return filename; |
294 | ||
295 | /* Find the length of the longest element of path. */ | |
296 | { | |
297 | SCM walk; | |
298 | ||
299 | max_path_len = 0; | |
a6d9e5ab | 300 | for (walk = path; !SCM_NULLP (walk); walk = SCM_CDR (walk)) |
26544b96 JB |
301 | { |
302 | SCM elt = SCM_CAR (walk); | |
2ade72d7 DH |
303 | SCM_ASSERT_TYPE (SCM_STRINGP (elt), path, 1, FUNC_NAME, |
304 | "list of strings"); | |
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); | |
2ade72d7 DH |
341 | SCM_ASSERT_TYPE (SCM_STRINGP (elt), elt, 3, FUNC_NAME, |
342 | "list of strings"); | |
a6d9e5ab DH |
343 | if (SCM_STRING_LENGTH (elt) > max_ext_len) |
344 | max_ext_len = SCM_STRING_LENGTH (elt); | |
26544b96 JB |
345 | } |
346 | } | |
347 | ||
06721500 JB |
348 | SCM_DEFER_INTS; |
349 | ||
1bbd0b84 | 350 | { /* scope */ |
56384176 JB |
351 | SCM result = SCM_BOOL_F; |
352 | int buf_size = max_path_len + 1 + filename_len + max_ext_len + 1; | |
1bbd0b84 | 353 | char *buf = SCM_MUST_MALLOC (buf_size); |
06721500 | 354 | |
56384176 JB |
355 | /* This simplifies the loop below a bit. */ |
356 | if (SCM_NULLP (extensions)) | |
357 | extensions = scm_listofnullstr; | |
0a74e31d | 358 | |
56384176 JB |
359 | /* Try every path element. At this point, we know the path is a |
360 | proper list of strings. */ | |
a6d9e5ab | 361 | for (; !SCM_NULLP (path); path = SCM_CDR (path)) |
56384176 JB |
362 | { |
363 | int len; | |
364 | SCM dir = SCM_CAR (path); | |
365 | SCM exts; | |
366 | ||
367 | /* Concatenate the path name and the filename. */ | |
a6d9e5ab | 368 | len = SCM_STRING_LENGTH (dir); |
34f0f2b8 | 369 | memcpy (buf, SCM_STRING_CHARS (dir), len); |
56384176 JB |
370 | if (len >= 1 && buf[len - 1] != '/') |
371 | buf[len++] = '/'; | |
372 | memcpy (buf + len, filename_chars, filename_len); | |
373 | len += filename_len; | |
374 | ||
375 | /* Try every extension. At this point, we know the extension | |
376 | list is a proper, nonempty list of strings. */ | |
a6d9e5ab | 377 | for (exts = extensions; !SCM_NULLP (exts); exts = SCM_CDR (exts)) |
56384176 JB |
378 | { |
379 | SCM ext = SCM_CAR (exts); | |
a6d9e5ab | 380 | int ext_len = SCM_STRING_LENGTH (ext); |
56384176 JB |
381 | struct stat mode; |
382 | ||
383 | /* Concatenate the extension. */ | |
34f0f2b8 | 384 | memcpy (buf + len, SCM_STRING_CHARS (ext), ext_len); |
56384176 JB |
385 | buf[len + ext_len] = '\0'; |
386 | ||
387 | /* If the file exists at all, we should return it. If the | |
388 | file is inaccessible, then that's an error. */ | |
389 | if (stat (buf, &mode) == 0 | |
390 | && ! (mode.st_mode & S_IFDIR)) | |
391 | { | |
392 | result = scm_makfromstr (buf, len + ext_len, 0); | |
393 | goto end; | |
394 | } | |
395 | } | |
396 | } | |
397 | ||
398 | end: | |
399 | scm_must_free (buf); | |
400 | scm_done_malloc (- buf_size); | |
401 | SCM_ALLOW_INTS; | |
402 | return result; | |
403 | } | |
06721500 | 404 | } |
1bbd0b84 | 405 | #undef FUNC_NAME |
06721500 JB |
406 | |
407 | ||
04e8fb0a MD |
408 | /* Search %load-path for a directory containing a file named FILENAME. |
409 | The file must be readable, and not a directory. | |
410 | If we find one, return its full filename; otherwise, return #f. | |
411 | If FILENAME is absolute, return it unchanged. */ | |
3b3b36dd | 412 | SCM_DEFINE (scm_sys_search_load_path, "%search-load-path", 1, 0, 0, |
67e8151b MG |
413 | (SCM filename), |
414 | "Search @var{%load-path} for the file named @var{filename},\n" | |
415 | "which must be readable by the current user. If @var{filename}\n" | |
416 | "is found in the list of paths to search or is an absolute\n" | |
417 | "pathname, return its full pathname. Otherwise, return\n" | |
418 | "@code{#f}. Filenames may have any of the optional extensions\n" | |
419 | "in the @code{%load-extensions} list; @code{%search-load-path}\n" | |
420 | "will try each 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 | |
2ade72d7 DH |
427 | if (scm_ilength (path) < 0) |
428 | SCM_MISC_ERROR ("%load-path is not a proper list", SCM_EOL); | |
429 | if (scm_ilength (exts) < 0) | |
430 | SCM_MISC_ERROR ("%load-extension list is not a proper list", SCM_EOL); | |
1bbd0b84 | 431 | return scm_search_path (path, filename, exts); |
04e8fb0a | 432 | } |
1bbd0b84 | 433 | #undef FUNC_NAME |
04e8fb0a MD |
434 | |
435 | ||
3b3b36dd | 436 | SCM_DEFINE (scm_primitive_load_path, "primitive-load-path", 1, 0, 0, |
67e8151b MG |
437 | (SCM filename), |
438 | "Search @var{%load-path} for the file named @var{filename} and\n" | |
439 | "load it into the top-level environment. If @var{filename} is a\n" | |
440 | "relative pathname and is not found in the list of search paths,\n" | |
441 | "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"), | |
e0c08f17 | 457 | SCM_LIST1 (filename)); |
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); |
aa767bc5 | 482 | return scm_eval_x (form, scm_current_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; | |
86d31dfe | 497 | SCM *loc = SCM_VARIABLE_LOC (scm_c_define ("%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 | 511 | scm_listofnullstr = scm_permanent_object (SCM_LIST1 (scm_nullstr)); |
86d31dfe | 512 | scm_loc_load_path = SCM_VARIABLE_LOC (scm_c_define ("%load-path", SCM_EOL)); |
26544b96 | 513 | scm_loc_load_extensions |
86d31dfe MV |
514 | = SCM_VARIABLE_LOC (scm_c_define ("%load-extensions", |
515 | SCM_LIST2 (scm_makfrom0str (".scm"), | |
516 | scm_nullstr))); | |
517 | scm_loc_load_hook = SCM_VARIABLE_LOC (scm_c_define ("%load-hook", SCM_BOOL_F)); | |
06721500 | 518 | |
e151bee6 JB |
519 | init_build_info (); |
520 | ||
8dc9439f | 521 | #ifndef SCM_MAGIC_SNARFER |
a0599745 | 522 | #include "libguile/load.x" |
8dc9439f | 523 | #endif |
0f2d19dd | 524 | } |
89e00824 ML |
525 | |
526 | /* | |
527 | Local Variables: | |
528 | c-file-style: "gnu" | |
529 | End: | |
530 | */ |