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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; | |
f1b7a066 | 100 | scm_primitive_eval_x (form); |
d7834b91 MD |
101 | } |
102 | return SCM_UNSPECIFIED; | |
103 | } | |
104 | ||
3b3b36dd | 105 | SCM_DEFINE (scm_primitive_load, "primitive-load", 1, 0, 0, |
1bbd0b84 | 106 | (SCM filename), |
b380b885 MD |
107 | "Load @var{file} and evaluate its contents in the top-level environment.\n" |
108 | "The load paths are not searched; @var{file} must either be a full\n" | |
109 | "pathname or be a pathname relative to the current directory. If the\n" | |
110 | "variable @code{%load-hook} is defined, it should be bound to a procedure\n" | |
111 | "that will be called before any code is loaded. See documentation for\n" | |
112 | "@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); |
9a09deb1 | 117 | SCM_ASSERT (SCM_FALSEP (hook) || (SCM_EQ_P (scm_procedure_p (hook), SCM_BOOL_T)), |
26544b96 | 118 | hook, "value of %load-hook is neither a procedure nor #f", |
1bbd0b84 | 119 | FUNC_NAME); |
26544b96 | 120 | |
54778cd3 | 121 | if (! SCM_FALSEP (hook)) |
26544b96 JB |
122 | scm_apply (hook, scm_listify (filename, SCM_UNDEFINED), SCM_EOL); |
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 |
55407879 TP |
247 | path = scm_listify (scm_makfrom0str (SCM_SITE_DIR), |
248 | scm_makfrom0str (SCM_LIBRARY_DIR), | |
249 | scm_makfrom0str (SCM_PKGDATA_DIR), | |
250 | SCM_UNDEFINED); | |
3feedb00 | 251 | #endif /* SCM_LIBRARY_DIR */ |
06721500 | 252 | |
04e8fb0a | 253 | path = scm_internal_parse_path (getenv ("GUILE_LOAD_PATH"), path); |
01cddfc1 | 254 | |
06721500 JB |
255 | *scm_loc_load_path = path; |
256 | } | |
257 | ||
04e8fb0a | 258 | SCM scm_listofnullstr; |
06721500 | 259 | |
04e8fb0a | 260 | /* Search PATH for a directory containing a file named FILENAME. |
06721500 | 261 | The file must be readable, and not a directory. |
26544b96 | 262 | If we find one, return its full filename; otherwise, return #f. |
56384176 JB |
263 | If FILENAME is absolute, return it unchanged. |
264 | If given, EXTENSIONS is a list of strings; for each directory | |
265 | in PATH, we search for FILENAME concatenated with each EXTENSION. */ | |
3b3b36dd | 266 | SCM_DEFINE (scm_search_path, "search-path", 2, 1, 0, |
1bbd0b84 | 267 | (SCM path, SCM filename, SCM extensions), |
d91788cb MG |
268 | "Search @var{path} for a directory containing a file named\n" |
269 | "@var{filename}. The file must be readable, and not a directory.\n" | |
270 | "If we find one, return its full filename; otherwise, return\n" | |
271 | "@code{#f}. If @var{filename} is absolute, return it unchanged.\n" | |
272 | "If given, @var{extensions} is a list of strings; for each\n" | |
273 | "directory in @var{path}, we search for @var{filename}\n" | |
274 | "concatenated with each @var{extension}.") | |
1bbd0b84 | 275 | #define FUNC_NAME s_scm_search_path |
06721500 | 276 | { |
56384176 | 277 | char *filename_chars; |
06721500 | 278 | int filename_len; |
56384176 JB |
279 | size_t max_path_len; /* maximum length of any PATH element */ |
280 | size_t max_ext_len; /* maximum length of any EXTENSIONS element */ | |
06721500 | 281 | |
3b3b36dd | 282 | SCM_VALIDATE_LIST (1,path); |
a6d9e5ab | 283 | SCM_VALIDATE_STRING (2, filename); |
04e8fb0a | 284 | if (SCM_UNBNDP (extensions)) |
56384176 | 285 | extensions = SCM_EOL; |
04e8fb0a | 286 | else |
3b3b36dd | 287 | SCM_VALIDATE_LIST (3,extensions); |
56384176 | 288 | |
34f0f2b8 | 289 | filename_chars = SCM_STRING_CHARS (filename); |
a6d9e5ab | 290 | filename_len = SCM_STRING_LENGTH (filename); |
06721500 | 291 | |
26544b96 | 292 | /* If FILENAME is absolute, return it unchanged. */ |
56384176 | 293 | if (filename_len >= 1 && filename_chars[0] == '/') |
26544b96 JB |
294 | return filename; |
295 | ||
296 | /* Find the length of the longest element of path. */ | |
297 | { | |
298 | SCM walk; | |
299 | ||
300 | max_path_len = 0; | |
a6d9e5ab | 301 | for (walk = path; !SCM_NULLP (walk); walk = SCM_CDR (walk)) |
26544b96 JB |
302 | { |
303 | SCM elt = SCM_CAR (walk); | |
a6d9e5ab | 304 | SCM_ASSERT (SCM_STRINGP (elt), elt, |
04e8fb0a | 305 | "path is not a list of strings", |
1bbd0b84 | 306 | FUNC_NAME); |
a6d9e5ab DH |
307 | if (SCM_STRING_LENGTH (elt) > max_path_len) |
308 | max_path_len = SCM_STRING_LENGTH (elt); | |
26544b96 JB |
309 | } |
310 | } | |
311 | ||
56384176 JB |
312 | /* If FILENAME has an extension, don't try to add EXTENSIONS to it. */ |
313 | { | |
314 | char *endp; | |
315 | ||
316 | for (endp = filename_chars + filename_len - 1; | |
317 | endp >= filename_chars; | |
318 | endp--) | |
319 | { | |
320 | if (*endp == '.') | |
321 | { | |
322 | /* This filename already has an extension, so cancel the | |
323 | list of extensions. */ | |
324 | extensions = SCM_EOL; | |
325 | break; | |
326 | } | |
327 | else if (*endp == '/') | |
328 | /* This filename has no extension, so keep the current list | |
329 | of extensions. */ | |
330 | break; | |
331 | } | |
332 | } | |
333 | ||
26544b96 JB |
334 | /* Find the length of the longest element of the load extensions |
335 | list. */ | |
1bbd0b84 | 336 | { /* scope */ |
26544b96 JB |
337 | SCM walk; |
338 | ||
339 | max_ext_len = 0; | |
a6d9e5ab | 340 | for (walk = extensions; !SCM_NULLP (walk); walk = SCM_CDR (walk)) |
26544b96 JB |
341 | { |
342 | SCM elt = SCM_CAR (walk); | |
a6d9e5ab | 343 | SCM_ASSERT (SCM_STRINGP (elt), elt, |
04e8fb0a | 344 | "extension list is not a list of strings", |
1bbd0b84 | 345 | FUNC_NAME); |
a6d9e5ab DH |
346 | if (SCM_STRING_LENGTH (elt) > max_ext_len) |
347 | max_ext_len = SCM_STRING_LENGTH (elt); | |
26544b96 JB |
348 | } |
349 | } | |
350 | ||
06721500 JB |
351 | SCM_DEFER_INTS; |
352 | ||
1bbd0b84 | 353 | { /* scope */ |
56384176 JB |
354 | SCM result = SCM_BOOL_F; |
355 | int buf_size = max_path_len + 1 + filename_len + max_ext_len + 1; | |
1bbd0b84 | 356 | char *buf = SCM_MUST_MALLOC (buf_size); |
06721500 | 357 | |
56384176 JB |
358 | /* This simplifies the loop below a bit. */ |
359 | if (SCM_NULLP (extensions)) | |
360 | extensions = scm_listofnullstr; | |
0a74e31d | 361 | |
56384176 JB |
362 | /* Try every path element. At this point, we know the path is a |
363 | proper list of strings. */ | |
a6d9e5ab | 364 | for (; !SCM_NULLP (path); path = SCM_CDR (path)) |
56384176 JB |
365 | { |
366 | int len; | |
367 | SCM dir = SCM_CAR (path); | |
368 | SCM exts; | |
369 | ||
370 | /* Concatenate the path name and the filename. */ | |
a6d9e5ab | 371 | len = SCM_STRING_LENGTH (dir); |
34f0f2b8 | 372 | memcpy (buf, SCM_STRING_CHARS (dir), len); |
56384176 JB |
373 | if (len >= 1 && buf[len - 1] != '/') |
374 | buf[len++] = '/'; | |
375 | memcpy (buf + len, filename_chars, filename_len); | |
376 | len += filename_len; | |
377 | ||
378 | /* Try every extension. At this point, we know the extension | |
379 | list is a proper, nonempty list of strings. */ | |
a6d9e5ab | 380 | for (exts = extensions; !SCM_NULLP (exts); exts = SCM_CDR (exts)) |
56384176 JB |
381 | { |
382 | SCM ext = SCM_CAR (exts); | |
a6d9e5ab | 383 | int ext_len = SCM_STRING_LENGTH (ext); |
56384176 JB |
384 | struct stat mode; |
385 | ||
386 | /* Concatenate the extension. */ | |
34f0f2b8 | 387 | memcpy (buf + len, SCM_STRING_CHARS (ext), ext_len); |
56384176 JB |
388 | buf[len + ext_len] = '\0'; |
389 | ||
390 | /* If the file exists at all, we should return it. If the | |
391 | file is inaccessible, then that's an error. */ | |
392 | if (stat (buf, &mode) == 0 | |
393 | && ! (mode.st_mode & S_IFDIR)) | |
394 | { | |
395 | result = scm_makfromstr (buf, len + ext_len, 0); | |
396 | goto end; | |
397 | } | |
398 | } | |
399 | } | |
400 | ||
401 | end: | |
402 | scm_must_free (buf); | |
403 | scm_done_malloc (- buf_size); | |
404 | SCM_ALLOW_INTS; | |
405 | return result; | |
406 | } | |
06721500 | 407 | } |
1bbd0b84 | 408 | #undef FUNC_NAME |
06721500 JB |
409 | |
410 | ||
04e8fb0a MD |
411 | /* Search %load-path for a directory containing a file named FILENAME. |
412 | The file must be readable, and not a directory. | |
413 | If we find one, return its full filename; otherwise, return #f. | |
414 | If FILENAME is absolute, return it unchanged. */ | |
3b3b36dd | 415 | SCM_DEFINE (scm_sys_search_load_path, "%search-load-path", 1, 0, 0, |
1bbd0b84 | 416 | (SCM filename), |
b380b885 MD |
417 | "Search @var{%load-path} for @var{file}, which must be readable by the\n" |
418 | "current user. If @var{file} is found in the list of paths to search or\n" | |
419 | "is an absolute pathname, return its full pathname. Otherwise, return\n" | |
420 | "@code{#f}. Filenames may have any of the optional extensions in the\n" | |
421 | "@code{%load-extensions} list; @code{%search-load-path} will try each\n" | |
422 | "extension automatically.") | |
1bbd0b84 | 423 | #define FUNC_NAME s_scm_sys_search_load_path |
04e8fb0a MD |
424 | { |
425 | SCM path = *scm_loc_load_path; | |
426 | SCM exts = *scm_loc_load_extensions; | |
a6d9e5ab | 427 | SCM_VALIDATE_STRING (1, filename); |
1bbd0b84 | 428 | |
04e8fb0a | 429 | SCM_ASSERT (scm_ilength (path) >= 0, path, "load path is not a proper list", |
1bbd0b84 | 430 | FUNC_NAME); |
04e8fb0a MD |
431 | SCM_ASSERT (scm_ilength (exts) >= 0, exts, |
432 | "load extension list is not a proper list", | |
1bbd0b84 GB |
433 | FUNC_NAME); |
434 | return scm_search_path (path, filename, exts); | |
04e8fb0a | 435 | } |
1bbd0b84 | 436 | #undef FUNC_NAME |
04e8fb0a MD |
437 | |
438 | ||
3b3b36dd | 439 | SCM_DEFINE (scm_primitive_load_path, "primitive-load-path", 1, 0, 0, |
1bbd0b84 | 440 | (SCM filename), |
b380b885 MD |
441 | "Search @var{%load-path} for @var{file} and load it into the top-level\n" |
442 | "environment. If @var{file} is a relative pathname and is not found in\n" | |
443 | "the list of search paths, an error is signalled.") | |
1bbd0b84 | 444 | #define FUNC_NAME s_scm_primitive_load_path |
06721500 | 445 | { |
26544b96 JB |
446 | SCM full_filename; |
447 | ||
a6d9e5ab | 448 | SCM_VALIDATE_STRING (1, filename); |
26544b96 JB |
449 | |
450 | full_filename = scm_sys_search_load_path (filename); | |
451 | ||
dbece3a2 GH |
452 | if (SCM_FALSEP (full_filename)) |
453 | { | |
a6d9e5ab | 454 | int absolute = (SCM_STRING_LENGTH (filename) >= 1 |
34f0f2b8 | 455 | && SCM_STRING_CHARS (filename)[0] == '/'); |
5d2d2ffc | 456 | SCM_MISC_ERROR ((absolute |
70d63753 GB |
457 | ? "Unable to load file ~S" |
458 | : "Unable to find file ~S in load path"), | |
26544b96 | 459 | scm_listify (filename, SCM_UNDEFINED)); |
dbece3a2 | 460 | } |
26544b96 | 461 | |
deca31e1 | 462 | return scm_primitive_load (full_filename); |
06721500 | 463 | } |
1bbd0b84 | 464 | #undef FUNC_NAME |
06721500 | 465 | |
f33b174d MD |
466 | #if SCM_DEBUG_DEPRECATED == 0 |
467 | ||
468 | /* Eval now copies source properties, so this function is no longer required. | |
b35d06a4 MD |
469 | */ |
470 | ||
471 | SCM_SYMBOL (scm_end_of_file_key, "end-of-file"); | |
472 | ||
a1ec6916 | 473 | SCM_DEFINE (scm_read_and_eval_x, "read-and-eval!", 0, 1, 0, |
1bbd0b84 | 474 | (SCM port), |
b380b885 MD |
475 | "Read a form from @var{port} (standard input by default), and evaluate it\n" |
476 | "(memoizing it in the process) in the top-level environment. If no data\n" | |
477 | "is left to be read from @var{port}, an @code{end-of-file} error is\n" | |
478 | "signalled.") | |
1bbd0b84 | 479 | #define FUNC_NAME s_scm_read_and_eval_x |
b35d06a4 | 480 | { |
deca31e1 | 481 | SCM form = scm_read (port); |
0c32d76c | 482 | if (SCM_EOF_OBJECT_P (form)) |
b35d06a4 | 483 | scm_ithrow (scm_end_of_file_key, SCM_EOL, 1); |
aa767bc5 | 484 | return scm_eval_x (form, scm_current_module ()); |
b35d06a4 | 485 | } |
1bbd0b84 | 486 | #undef FUNC_NAME |
b35d06a4 | 487 | |
f33b174d MD |
488 | #endif |
489 | ||
06721500 | 490 | \f |
e151bee6 | 491 | /* Information about the build environment. */ |
06721500 | 492 | |
e151bee6 JB |
493 | /* Initialize the scheme variable %guile-build-info, based on data |
494 | provided by the Makefile, via libpath.h. */ | |
495 | static void | |
496 | init_build_info () | |
497 | { | |
498 | static struct { char *name; char *value; } info[] = SCM_BUILD_INFO; | |
499 | SCM *loc = SCM_CDRLOC (scm_sysintern ("%guile-build-info", SCM_EOL)); | |
c7023c69 | 500 | unsigned int i; |
e151bee6 JB |
501 | |
502 | for (i = 0; i < (sizeof (info) / sizeof (info[0])); i++) | |
38ae064c | 503 | *loc = scm_acons (scm_str2symbol (info[i].name), |
e151bee6 JB |
504 | scm_makfrom0str (info[i].value), |
505 | *loc); | |
506 | } | |
507 | ||
508 | ||
509 | \f | |
0f2d19dd JB |
510 | void |
511 | scm_init_load () | |
0f2d19dd | 512 | { |
04e8fb0a MD |
513 | scm_listofnullstr = scm_permanent_object (SCM_LIST1 (scm_nullstr)); |
514 | scm_loc_load_path = SCM_CDRLOC (scm_sysintern ("%load-path", SCM_EOL)); | |
26544b96 | 515 | scm_loc_load_extensions |
04e8fb0a | 516 | = SCM_CDRLOC (scm_sysintern ("%load-extensions", |
0a74e31d MD |
517 | scm_listify (scm_makfrom0str (".scm"), |
518 | scm_makfrom0str (""), | |
04e8fb0a MD |
519 | SCM_UNDEFINED))); |
520 | scm_loc_load_hook = SCM_CDRLOC (scm_sysintern ("%load-hook", SCM_BOOL_F)); | |
06721500 | 521 | |
e151bee6 JB |
522 | init_build_info (); |
523 | ||
8dc9439f | 524 | #ifndef SCM_MAGIC_SNARFER |
a0599745 | 525 | #include "libguile/load.x" |
8dc9439f | 526 | #endif |
0f2d19dd | 527 | } |
89e00824 ML |
528 | |
529 | /* | |
530 | Local Variables: | |
531 | c-file-style: "gnu" | |
532 | End: | |
533 | */ |