Commit | Line | Data |
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2b829bbb | 1 | /* Copyright (C) 1995,1996,1998,1999,2000,2001, 2004, 2006 Free Software Foundation, Inc. |
0f2d19dd | 2 | * |
73be1d9e MV |
3 | * This library is free software; you can redistribute it and/or |
4 | * modify it under the terms of the GNU Lesser General Public | |
5 | * License as published by the Free Software Foundation; either | |
6 | * version 2.1 of the License, or (at your option) any later version. | |
0f2d19dd | 7 | * |
73be1d9e MV |
8 | * This library 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 GNU | |
11 | * Lesser General Public License for more details. | |
0f2d19dd | 12 | * |
73be1d9e MV |
13 | * You should have received a copy of the GNU Lesser General Public |
14 | * License along with this library; if not, write to the Free Software | |
92205699 | 15 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
73be1d9e | 16 | */ |
1bbd0b84 | 17 | |
1bbd0b84 | 18 | |
0f2d19dd JB |
19 | \f |
20 | ||
dbb605f5 | 21 | #ifdef HAVE_CONFIG_H |
cbd41c89 RB |
22 | # include <config.h> |
23 | #endif | |
24 | ||
13070bd3 | 25 | #include <string.h> |
7d04d68b | 26 | #include <stdio.h> |
13070bd3 | 27 | |
a0599745 MD |
28 | #include "libguile/_scm.h" |
29 | #include "libguile/libpath.h" | |
30 | #include "libguile/fports.h" | |
31 | #include "libguile/read.h" | |
32 | #include "libguile/eval.h" | |
33 | #include "libguile/throw.h" | |
34 | #include "libguile/alist.h" | |
35 | #include "libguile/dynwind.h" | |
36 | #include "libguile/root.h" | |
37 | #include "libguile/strings.h" | |
f33b174d | 38 | #include "libguile/modules.h" |
c96d76b8 | 39 | #include "libguile/lang.h" |
7d04d68b | 40 | #include "libguile/chars.h" |
c44ca4fe | 41 | #include "libguile/srfi-13.h" |
a0599745 MD |
42 | |
43 | #include "libguile/validate.h" | |
44 | #include "libguile/load.h" | |
ec3a8ace | 45 | #include "libguile/fluids.h" |
06721500 | 46 | |
22f4ee48 AW |
47 | #include "libguile/vm.h" /* for load-compiled/vm */ |
48 | ||
06721500 JB |
49 | #include <sys/types.h> |
50 | #include <sys/stat.h> | |
51 | ||
52 | #ifdef HAVE_UNISTD_H | |
53 | #include <unistd.h> | |
54 | #endif /* HAVE_UNISTD_H */ | |
55 | ||
56 | #ifndef R_OK | |
57 | #define R_OK 4 | |
58 | #endif | |
0f2d19dd JB |
59 | |
60 | \f | |
06721500 | 61 | /* Loading a file, given an absolute filename. */ |
0f2d19dd | 62 | |
26544b96 JB |
63 | /* Hook to run when we load a file, perhaps to announce the fact somewhere. |
64 | Applied to the full name of the file. */ | |
65 | static SCM *scm_loc_load_hook; | |
66 | ||
ec3a8ace NJ |
67 | /* The current reader (a fluid). */ |
68 | static SCM the_reader = SCM_BOOL_F; | |
69 | static size_t the_reader_fluid_num = 0; | |
70 | ||
3b3b36dd | 71 | SCM_DEFINE (scm_primitive_load, "primitive-load", 1, 0, 0, |
1bbd0b84 | 72 | (SCM filename), |
67e8151b MG |
73 | "Load the file named @var{filename} and evaluate its contents in\n" |
74 | "the top-level environment. The load paths are not searched;\n" | |
75 | "@var{filename} must either be a full pathname or be a pathname\n" | |
76 | "relative to the current directory. If the variable\n" | |
77 | "@code{%load-hook} is defined, it should be bound to a procedure\n" | |
78 | "that will be called before any code is loaded. See the\n" | |
79 | "documentation for @code{%load-hook} later in this section.") | |
1bbd0b84 | 80 | #define FUNC_NAME s_scm_primitive_load |
0f2d19dd | 81 | { |
26544b96 | 82 | SCM hook = *scm_loc_load_hook; |
a6d9e5ab | 83 | SCM_VALIDATE_STRING (1, filename); |
bc36d050 | 84 | if (scm_is_true (hook) && scm_is_false (scm_procedure_p (hook))) |
2ade72d7 DH |
85 | SCM_MISC_ERROR ("value of %load-hook is neither a procedure nor #f", |
86 | SCM_EOL); | |
26544b96 | 87 | |
bc36d050 | 88 | if (!scm_is_false (hook)) |
fdc28395 | 89 | scm_call_1 (hook, filename); |
26544b96 | 90 | |
1bbd0b84 | 91 | { /* scope */ |
b5623573 | 92 | SCM port = scm_open_file (filename, scm_from_locale_string ("r")); |
661ae7ab MV |
93 | scm_dynwind_begin (SCM_F_DYNWIND_REWINDABLE); |
94 | scm_i_dynwind_current_load_port (port); | |
b5623573 MV |
95 | |
96 | while (1) | |
97 | { | |
ec3a8ace NJ |
98 | SCM reader, form; |
99 | ||
100 | /* Lookup and use the current reader to read the next | |
101 | expression. */ | |
102 | reader = SCM_FAST_FLUID_REF (the_reader_fluid_num); | |
103 | if (reader == SCM_BOOL_F) | |
104 | form = scm_read (port); | |
105 | else | |
106 | form = scm_call_1 (reader, port); | |
107 | ||
b5623573 MV |
108 | if (SCM_EOF_OBJECT_P (form)) |
109 | break; | |
ec3a8ace | 110 | |
b5623573 MV |
111 | scm_primitive_eval_x (form); |
112 | } | |
113 | ||
661ae7ab | 114 | scm_dynwind_end (); |
0f2d19dd JB |
115 | scm_close_port (port); |
116 | } | |
b59b97ba | 117 | return SCM_UNSPECIFIED; |
0f2d19dd | 118 | } |
1bbd0b84 | 119 | #undef FUNC_NAME |
0f2d19dd | 120 | |
c519b272 MV |
121 | SCM |
122 | scm_c_primitive_load (const char *filename) | |
123 | { | |
cc95e00a | 124 | return scm_primitive_load (scm_from_locale_string (filename)); |
c519b272 MV |
125 | } |
126 | ||
0f2d19dd | 127 | \f |
3feedb00 MD |
128 | /* Builtin path to scheme library files. */ |
129 | #ifdef SCM_PKGDATA_DIR | |
a1ec6916 | 130 | SCM_DEFINE (scm_sys_package_data_dir, "%package-data-dir", 0, 0, 0, |
1bbd0b84 | 131 | (), |
b380b885 MD |
132 | "Return the name of the directory where Scheme packages, modules and\n" |
133 | "libraries are kept. On most Unix systems, this will be\n" | |
134 | "@samp{/usr/local/share/guile}.") | |
1bbd0b84 | 135 | #define FUNC_NAME s_scm_sys_package_data_dir |
3feedb00 | 136 | { |
cc95e00a | 137 | return scm_from_locale_string (SCM_PKGDATA_DIR); |
3feedb00 | 138 | } |
1bbd0b84 | 139 | #undef FUNC_NAME |
3feedb00 MD |
140 | #endif /* SCM_PKGDATA_DIR */ |
141 | ||
e8e9b690 | 142 | #ifdef SCM_LIBRARY_DIR |
a1ec6916 | 143 | SCM_DEFINE (scm_sys_library_dir, "%library-dir", 0,0,0, |
e8e9b690 | 144 | (), |
b380b885 MD |
145 | "Return the directory where the Guile Scheme library files are installed.\n" |
146 | "E.g., may return \"/usr/share/guile/1.3.5\".") | |
e8e9b690 GB |
147 | #define FUNC_NAME s_scm_sys_library_dir |
148 | { | |
cc95e00a | 149 | return scm_from_locale_string (SCM_LIBRARY_DIR); |
e8e9b690 GB |
150 | } |
151 | #undef FUNC_NAME | |
152 | #endif /* SCM_LIBRARY_DIR */ | |
153 | ||
154 | #ifdef SCM_SITE_DIR | |
a1ec6916 | 155 | SCM_DEFINE (scm_sys_site_dir, "%site-dir", 0,0,0, |
e8e9b690 | 156 | (), |
b380b885 MD |
157 | "Return the directory where the Guile site files are installed.\n" |
158 | "E.g., may return \"/usr/share/guile/site\".") | |
e8e9b690 GB |
159 | #define FUNC_NAME s_scm_sys_site_dir |
160 | { | |
cc95e00a | 161 | return scm_from_locale_string (SCM_SITE_DIR); |
e8e9b690 GB |
162 | } |
163 | #undef FUNC_NAME | |
164 | #endif /* SCM_SITE_DIR */ | |
165 | ||
166 | ||
167 | ||
3feedb00 | 168 | \f |
06721500 | 169 | /* Initializing the load path, and searching it. */ |
0f2d19dd | 170 | |
26544b96 | 171 | /* List of names of directories we search for files to load. */ |
06721500 JB |
172 | static SCM *scm_loc_load_path; |
173 | ||
26544b96 JB |
174 | /* List of extensions we try adding to the filenames. */ |
175 | static SCM *scm_loc_load_extensions; | |
176 | ||
22f4ee48 AW |
177 | /* Like %load-extensions, but for compiled files. */ |
178 | static SCM *scm_loc_load_compiled_extensions; | |
179 | ||
01cddfc1 | 180 | |
a1ec6916 | 181 | SCM_DEFINE (scm_parse_path, "parse-path", 1, 1, 0, |
1bbd0b84 | 182 | (SCM path, SCM tail), |
d91788cb MG |
183 | "Parse @var{path}, which is expected to be a colon-separated\n" |
184 | "string, into a list and return the resulting list with\n" | |
185 | "@var{tail} appended. If @var{path} is @code{#f}, @var{tail}\n" | |
186 | "is returned.") | |
1bbd0b84 | 187 | #define FUNC_NAME s_scm_parse_path |
04e8fb0a | 188 | { |
7d04d68b MV |
189 | #ifdef __MINGW32__ |
190 | SCM sep = SCM_MAKE_CHAR (';'); | |
191 | #else | |
192 | SCM sep = SCM_MAKE_CHAR (':'); | |
193 | #endif | |
194 | ||
04e8fb0a MD |
195 | if (SCM_UNBNDP (tail)) |
196 | tail = SCM_EOL; | |
7888309b | 197 | return (scm_is_false (path) |
04e8fb0a | 198 | ? tail |
7d04d68b | 199 | : scm_append_x (scm_list_2 (scm_string_split (path, sep), tail))); |
04e8fb0a | 200 | } |
1bbd0b84 | 201 | #undef FUNC_NAME |
04e8fb0a MD |
202 | |
203 | ||
06721500 | 204 | /* Initialize the global variable %load-path, given the value of the |
3feedb00 | 205 | SCM_SITE_DIR and SCM_LIBRARY_DIR preprocessor symbols and the |
01cddfc1 | 206 | GUILE_LOAD_PATH environment variable. */ |
0f2d19dd | 207 | void |
06721500 JB |
208 | scm_init_load_path () |
209 | { | |
11c5e0bf | 210 | char *env; |
06721500 JB |
211 | SCM path = SCM_EOL; |
212 | ||
3feedb00 | 213 | #ifdef SCM_LIBRARY_DIR |
02b84691 AW |
214 | env = getenv ("GUILE_SYSTEM_PATH"); |
215 | if (env && strcmp (env, "") == 0) | |
216 | /* special-case interpret system-path=="" as meaning no system path instead | |
217 | of '("") */ | |
218 | ; | |
219 | else if (env) | |
220 | path = scm_parse_path (scm_from_locale_string (env), path); | |
221 | else | |
222 | path = scm_list_3 (scm_from_locale_string (SCM_SITE_DIR), | |
223 | scm_from_locale_string (SCM_LIBRARY_DIR), | |
224 | scm_from_locale_string (SCM_PKGDATA_DIR)); | |
3feedb00 | 225 | #endif /* SCM_LIBRARY_DIR */ |
06721500 | 226 | |
11c5e0bf MV |
227 | env = getenv ("GUILE_LOAD_PATH"); |
228 | if (env) | |
229 | path = scm_parse_path (scm_from_locale_string (env), path); | |
01cddfc1 | 230 | |
06721500 JB |
231 | *scm_loc_load_path = path; |
232 | } | |
233 | ||
04e8fb0a | 234 | SCM scm_listofnullstr; |
06721500 | 235 | |
7d04d68b MV |
236 | /* Utility functions for assembling C strings in a buffer. |
237 | */ | |
238 | ||
239 | struct stringbuf { | |
240 | char *buf, *ptr; | |
241 | size_t buf_len; | |
242 | }; | |
243 | ||
244 | static void | |
245 | stringbuf_free (void *data) | |
246 | { | |
247 | struct stringbuf *buf = (struct stringbuf *)data; | |
248 | free (buf->buf); | |
249 | } | |
250 | ||
251 | static void | |
252 | stringbuf_grow (struct stringbuf *buf) | |
253 | { | |
254 | size_t ptroff = buf->ptr - buf->buf; | |
255 | buf->buf_len *= 2; | |
7d04d68b MV |
256 | buf->buf = scm_realloc (buf->buf, buf->buf_len); |
257 | buf->ptr = buf->buf + ptroff; | |
258 | } | |
259 | ||
260 | static void | |
261 | stringbuf_cat_locale_string (struct stringbuf *buf, SCM str) | |
262 | { | |
263 | size_t max_len = buf->buf_len - (buf->ptr - buf->buf) - 1; | |
264 | size_t len = scm_to_locale_stringbuf (str, buf->ptr, max_len); | |
265 | if (len > max_len) | |
266 | { | |
267 | /* buffer is too small, double its size and try again. | |
268 | */ | |
269 | stringbuf_grow (buf); | |
270 | stringbuf_cat_locale_string (buf, str); | |
271 | } | |
272 | else | |
273 | { | |
274 | /* string fits, terminate it and check for embedded '\0'. | |
275 | */ | |
276 | buf->ptr[len] = '\0'; | |
277 | if (strlen (buf->ptr) != len) | |
278 | scm_misc_error (NULL, | |
279 | "string contains #\\nul character: ~S", | |
280 | scm_list_1 (str)); | |
281 | buf->ptr += len; | |
282 | } | |
283 | } | |
284 | ||
285 | static void | |
286 | stringbuf_cat (struct stringbuf *buf, char *str) | |
287 | { | |
288 | size_t max_len = buf->buf_len - (buf->ptr - buf->buf) - 1; | |
289 | size_t len = strlen (str); | |
290 | if (len > max_len) | |
291 | { | |
292 | /* buffer is too small, double its size and try again. | |
293 | */ | |
294 | stringbuf_grow (buf); | |
295 | stringbuf_cat (buf, str); | |
296 | } | |
297 | else | |
298 | { | |
299 | /* string fits, copy it into buffer. | |
300 | */ | |
301 | strcpy (buf->ptr, str); | |
302 | buf->ptr += len; | |
303 | } | |
304 | } | |
305 | ||
306 | ||
22f4ee48 AW |
307 | static int |
308 | scm_c_string_has_an_ext (char *str, size_t len, SCM extensions) | |
309 | { | |
310 | for (; !scm_is_null (extensions); extensions = SCM_CDR (extensions)) | |
311 | { | |
312 | char *ext; | |
313 | size_t extlen; | |
314 | int match; | |
315 | ext = scm_to_locale_string (SCM_CAR (extensions)); | |
316 | extlen = strlen (ext); | |
317 | match = (len > extlen && str[len - extlen - 1] == '.' | |
318 | && strncmp (str + (len - extlen), ext, extlen) == 0); | |
319 | free (ext); | |
320 | if (match) | |
321 | return 1; | |
322 | } | |
323 | return 0; | |
324 | } | |
325 | ||
04e8fb0a | 326 | /* Search PATH for a directory containing a file named FILENAME. |
06721500 | 327 | The file must be readable, and not a directory. |
26544b96 | 328 | If we find one, return its full filename; otherwise, return #f. |
56384176 JB |
329 | If FILENAME is absolute, return it unchanged. |
330 | If given, EXTENSIONS is a list of strings; for each directory | |
331 | in PATH, we search for FILENAME concatenated with each EXTENSION. */ | |
22f4ee48 AW |
332 | SCM_DEFINE (scm_search_path, "search-path", 2, 2, 0, |
333 | (SCM path, SCM filename, SCM extensions, SCM require_exts), | |
d91788cb MG |
334 | "Search @var{path} for a directory containing a file named\n" |
335 | "@var{filename}. The file must be readable, and not a directory.\n" | |
336 | "If we find one, return its full filename; otherwise, return\n" | |
337 | "@code{#f}. If @var{filename} is absolute, return it unchanged.\n" | |
338 | "If given, @var{extensions} is a list of strings; for each\n" | |
339 | "directory in @var{path}, we search for @var{filename}\n" | |
340 | "concatenated with each @var{extension}.") | |
1bbd0b84 | 341 | #define FUNC_NAME s_scm_search_path |
06721500 | 342 | { |
7d04d68b | 343 | struct stringbuf buf; |
56384176 | 344 | char *filename_chars; |
7d04d68b MV |
345 | size_t filename_len; |
346 | SCM result = SCM_BOOL_F; | |
06721500 | 347 | |
04e8fb0a | 348 | if (SCM_UNBNDP (extensions)) |
56384176 | 349 | extensions = SCM_EOL; |
56384176 | 350 | |
22f4ee48 AW |
351 | if (SCM_UNBNDP (require_exts)) |
352 | require_exts = SCM_BOOL_F; | |
353 | ||
661ae7ab | 354 | scm_dynwind_begin (0); |
7d04d68b MV |
355 | |
356 | filename_chars = scm_to_locale_string (filename); | |
357 | filename_len = strlen (filename_chars); | |
661ae7ab | 358 | scm_dynwind_free (filename_chars); |
06721500 | 359 | |
26544b96 | 360 | /* If FILENAME is absolute, return it unchanged. */ |
2e945bcc SJ |
361 | #ifdef __MINGW32__ |
362 | if (((filename_len >= 1) && | |
363 | (filename_chars[0] == '/' || filename_chars[0] == '\\')) || | |
364 | ((filename_len >= 3) && filename_chars[1] == ':' && | |
365 | ((filename_chars[0] >= 'a' && filename_chars[0] <= 'z') || | |
366 | (filename_chars[0] >= 'A' && filename_chars[0] <= 'Z')) && | |
367 | (filename_chars[2] == '/' || filename_chars[2] == '\\'))) | |
368 | #else | |
56384176 | 369 | if (filename_len >= 1 && filename_chars[0] == '/') |
2e945bcc | 370 | #endif |
7d04d68b | 371 | { |
22f4ee48 AW |
372 | SCM res = filename; |
373 | if (scm_is_true (require_exts) && | |
374 | !scm_c_string_has_an_ext (filename_chars, filename_len, | |
375 | extensions)) | |
376 | res = SCM_BOOL_F; | |
377 | ||
661ae7ab | 378 | scm_dynwind_end (); |
22f4ee48 | 379 | return res; |
7d04d68b | 380 | } |
26544b96 | 381 | |
56384176 JB |
382 | /* If FILENAME has an extension, don't try to add EXTENSIONS to it. */ |
383 | { | |
384 | char *endp; | |
385 | ||
386 | for (endp = filename_chars + filename_len - 1; | |
387 | endp >= filename_chars; | |
388 | endp--) | |
389 | { | |
390 | if (*endp == '.') | |
391 | { | |
22f4ee48 AW |
392 | if (scm_is_true (require_exts) && |
393 | !scm_c_string_has_an_ext (filename_chars, filename_len, | |
394 | extensions)) | |
395 | { | |
396 | /* This filename has an extension, but not one of the right | |
397 | ones... */ | |
398 | scm_dynwind_end (); | |
399 | return SCM_BOOL_F; | |
400 | } | |
56384176 JB |
401 | /* This filename already has an extension, so cancel the |
402 | list of extensions. */ | |
403 | extensions = SCM_EOL; | |
404 | break; | |
405 | } | |
2e945bcc SJ |
406 | #ifdef __MINGW32__ |
407 | else if (*endp == '/' || *endp == '\\') | |
408 | #else | |
56384176 | 409 | else if (*endp == '/') |
2e945bcc | 410 | #endif |
56384176 JB |
411 | /* This filename has no extension, so keep the current list |
412 | of extensions. */ | |
413 | break; | |
414 | } | |
415 | } | |
416 | ||
7d04d68b MV |
417 | /* This simplifies the loop below a bit. |
418 | */ | |
d2e53ed6 | 419 | if (scm_is_null (extensions)) |
7d04d68b | 420 | extensions = scm_listofnullstr; |
06721500 | 421 | |
7d04d68b MV |
422 | buf.buf_len = 512; |
423 | buf.buf = scm_malloc (buf.buf_len); | |
661ae7ab | 424 | scm_dynwind_unwind_handler (stringbuf_free, &buf, SCM_F_WIND_EXPLICITLY); |
0a74e31d | 425 | |
7d04d68b MV |
426 | /* Try every path element. |
427 | */ | |
d2e53ed6 | 428 | for (; scm_is_pair (path); path = SCM_CDR (path)) |
7d04d68b MV |
429 | { |
430 | SCM dir = SCM_CAR (path); | |
431 | SCM exts; | |
432 | size_t sans_ext_len; | |
433 | ||
434 | buf.ptr = buf.buf; | |
435 | stringbuf_cat_locale_string (&buf, dir); | |
436 | ||
437 | /* Concatenate the path name and the filename. */ | |
438 | ||
2e945bcc | 439 | #ifdef __MINGW32__ |
5a6d139b | 440 | if ((buf.ptr > buf.buf) && (buf.ptr[-1] != '/') && (buf.ptr[-1] != '\\')) |
2e945bcc | 441 | #else |
5a6d139b | 442 | if ((buf.ptr > buf.buf) && (buf.ptr[-1] != '/')) |
2e945bcc | 443 | #endif |
7d04d68b MV |
444 | stringbuf_cat (&buf, "/"); |
445 | ||
446 | stringbuf_cat (&buf, filename_chars); | |
447 | sans_ext_len = buf.ptr - buf.buf; | |
448 | ||
449 | /* Try every extension. */ | |
d2e53ed6 | 450 | for (exts = extensions; scm_is_pair (exts); exts = SCM_CDR (exts)) |
7d04d68b MV |
451 | { |
452 | SCM ext = SCM_CAR (exts); | |
453 | struct stat mode; | |
454 | ||
455 | buf.ptr = buf.buf + sans_ext_len; | |
456 | stringbuf_cat_locale_string (&buf, ext); | |
457 | ||
458 | /* If the file exists at all, we should return it. If the | |
459 | file is inaccessible, then that's an error. */ | |
460 | ||
7d04d68b MV |
461 | if (stat (buf.buf, &mode) == 0 |
462 | && ! (mode.st_mode & S_IFDIR)) | |
463 | { | |
464 | result = scm_from_locale_string (buf.buf); | |
465 | goto end; | |
466 | } | |
467 | } | |
468 | ||
469 | if (!SCM_NULL_OR_NIL_P (exts)) | |
470 | scm_wrong_type_arg_msg (NULL, 0, extensions, "proper list"); | |
471 | } | |
56384176 | 472 | |
7d04d68b MV |
473 | if (!SCM_NULL_OR_NIL_P (path)) |
474 | scm_wrong_type_arg_msg (NULL, 0, path, "proper list"); | |
56384176 | 475 | |
7d04d68b | 476 | end: |
661ae7ab | 477 | scm_dynwind_end (); |
7d04d68b | 478 | return result; |
06721500 | 479 | } |
1bbd0b84 | 480 | #undef FUNC_NAME |
06721500 JB |
481 | |
482 | ||
04e8fb0a MD |
483 | /* Search %load-path for a directory containing a file named FILENAME. |
484 | The file must be readable, and not a directory. | |
485 | If we find one, return its full filename; otherwise, return #f. | |
486 | If FILENAME is absolute, return it unchanged. */ | |
3b3b36dd | 487 | SCM_DEFINE (scm_sys_search_load_path, "%search-load-path", 1, 0, 0, |
67e8151b MG |
488 | (SCM filename), |
489 | "Search @var{%load-path} for the file named @var{filename},\n" | |
490 | "which must be readable by the current user. If @var{filename}\n" | |
491 | "is found in the list of paths to search or is an absolute\n" | |
492 | "pathname, return its full pathname. Otherwise, return\n" | |
493 | "@code{#f}. Filenames may have any of the optional extensions\n" | |
494 | "in the @code{%load-extensions} list; @code{%search-load-path}\n" | |
495 | "will try each extension automatically.") | |
1bbd0b84 | 496 | #define FUNC_NAME s_scm_sys_search_load_path |
04e8fb0a MD |
497 | { |
498 | SCM path = *scm_loc_load_path; | |
499 | SCM exts = *scm_loc_load_extensions; | |
a6d9e5ab | 500 | SCM_VALIDATE_STRING (1, filename); |
1bbd0b84 | 501 | |
2ade72d7 DH |
502 | if (scm_ilength (path) < 0) |
503 | SCM_MISC_ERROR ("%load-path is not a proper list", SCM_EOL); | |
504 | if (scm_ilength (exts) < 0) | |
505 | SCM_MISC_ERROR ("%load-extension list is not a proper list", SCM_EOL); | |
22f4ee48 | 506 | return scm_search_path (path, filename, exts, SCM_UNDEFINED); |
04e8fb0a | 507 | } |
1bbd0b84 | 508 | #undef FUNC_NAME |
04e8fb0a MD |
509 | |
510 | ||
3b3b36dd | 511 | SCM_DEFINE (scm_primitive_load_path, "primitive-load-path", 1, 0, 0, |
67e8151b MG |
512 | (SCM filename), |
513 | "Search @var{%load-path} for the file named @var{filename} and\n" | |
514 | "load it into the top-level environment. If @var{filename} is a\n" | |
515 | "relative pathname and is not found in the list of search paths,\n" | |
516 | "an error is signalled.") | |
1bbd0b84 | 517 | #define FUNC_NAME s_scm_primitive_load_path |
06721500 | 518 | { |
22f4ee48 | 519 | SCM full_filename, compiled_filename; |
26544b96 | 520 | |
26544b96 | 521 | full_filename = scm_sys_search_load_path (filename); |
22f4ee48 AW |
522 | compiled_filename = scm_search_path (*scm_loc_load_path, |
523 | filename, | |
524 | *scm_loc_load_compiled_extensions, | |
525 | SCM_BOOL_T); | |
26544b96 | 526 | |
22f4ee48 | 527 | if (scm_is_false (full_filename) && scm_is_false (compiled_filename)) |
ffa747a6 MV |
528 | SCM_MISC_ERROR ("Unable to find file ~S in load path", |
529 | scm_list_1 (filename)); | |
26544b96 | 530 | |
22f4ee48 AW |
531 | if (scm_is_false (compiled_filename)) |
532 | return scm_primitive_load (full_filename); | |
533 | ||
534 | if (scm_is_false (full_filename)) | |
535 | return scm_load_compiled_with_vm (compiled_filename); | |
536 | ||
537 | { | |
538 | char *source, *compiled; | |
539 | struct stat stat_source, stat_compiled; | |
540 | ||
541 | source = scm_to_locale_string (full_filename); | |
542 | compiled = scm_to_locale_string (compiled_filename); | |
543 | ||
544 | if (stat (source, &stat_source) == 0 | |
545 | && stat (compiled, &stat_compiled) == 0 | |
546 | && stat_source.st_mtime <= stat_compiled.st_mtime) | |
547 | { | |
548 | free (source); | |
549 | free (compiled); | |
550 | return scm_load_compiled_with_vm (compiled_filename); | |
551 | } | |
552 | else | |
553 | { | |
554 | scm_puts (";;; note: source file ", scm_current_error_port ()); | |
555 | scm_puts (source, scm_current_error_port ()); | |
556 | scm_puts (" newer than compiled ", scm_current_error_port ()); | |
557 | scm_puts (compiled, scm_current_error_port ()); | |
558 | scm_puts ("\n", scm_current_error_port ()); | |
559 | free (source); | |
560 | free (compiled); | |
561 | return scm_primitive_load (full_filename); | |
562 | } | |
563 | } | |
06721500 | 564 | } |
1bbd0b84 | 565 | #undef FUNC_NAME |
06721500 | 566 | |
c519b272 MV |
567 | SCM |
568 | scm_c_primitive_load_path (const char *filename) | |
569 | { | |
cc95e00a | 570 | return scm_primitive_load_path (scm_from_locale_string (filename)); |
c519b272 MV |
571 | } |
572 | ||
06721500 | 573 | \f |
e151bee6 | 574 | /* Information about the build environment. */ |
06721500 | 575 | |
e151bee6 JB |
576 | /* Initialize the scheme variable %guile-build-info, based on data |
577 | provided by the Makefile, via libpath.h. */ | |
578 | static void | |
579 | init_build_info () | |
580 | { | |
581 | static struct { char *name; char *value; } info[] = SCM_BUILD_INFO; | |
86d31dfe | 582 | SCM *loc = SCM_VARIABLE_LOC (scm_c_define ("%guile-build-info", SCM_EOL)); |
c014a02e | 583 | unsigned long i; |
e151bee6 JB |
584 | |
585 | for (i = 0; i < (sizeof (info) / sizeof (info[0])); i++) | |
cc95e00a MV |
586 | { |
587 | SCM key = scm_from_locale_symbol (info[i].name); | |
588 | SCM val = scm_from_locale_string (info[i].value); | |
589 | *loc = scm_acons (key, val, *loc); | |
590 | } | |
e151bee6 JB |
591 | } |
592 | ||
e151bee6 | 593 | \f |
0f2d19dd JB |
594 | void |
595 | scm_init_load () | |
0f2d19dd | 596 | { |
1afff620 | 597 | scm_listofnullstr = scm_permanent_object (scm_list_1 (scm_nullstr)); |
86d31dfe | 598 | scm_loc_load_path = SCM_VARIABLE_LOC (scm_c_define ("%load-path", SCM_EOL)); |
26544b96 | 599 | scm_loc_load_extensions |
86d31dfe | 600 | = SCM_VARIABLE_LOC (scm_c_define ("%load-extensions", |
cc95e00a MV |
601 | scm_list_2 (scm_from_locale_string (".scm"), |
602 | scm_nullstr))); | |
22f4ee48 AW |
603 | scm_loc_load_compiled_extensions |
604 | = SCM_VARIABLE_LOC (scm_c_define ("%load-compiled-extensions", | |
605 | scm_list_1 (scm_from_locale_string (".go")))); | |
86d31dfe | 606 | scm_loc_load_hook = SCM_VARIABLE_LOC (scm_c_define ("%load-hook", SCM_BOOL_F)); |
06721500 | 607 | |
ec3a8ace NJ |
608 | the_reader = scm_make_fluid (); |
609 | the_reader_fluid_num = SCM_FLUID_NUM (the_reader); | |
610 | SCM_FAST_FLUID_SET_X (the_reader_fluid_num, SCM_BOOL_F); | |
611 | scm_c_define("current-reader", the_reader); | |
612 | ||
e151bee6 JB |
613 | init_build_info (); |
614 | ||
a0599745 | 615 | #include "libguile/load.x" |
0f2d19dd | 616 | } |
89e00824 ML |
617 | |
618 | /* | |
619 | Local Variables: | |
620 | c-file-style: "gnu" | |
621 | End: | |
622 | */ |