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 | ||
5b197db8 AW |
56 | #ifdef HAVE_PWD_H |
57 | #include <pwd.h> | |
58 | #endif /* HAVE_PWD_H */ | |
59 | ||
06721500 JB |
60 | #ifndef R_OK |
61 | #define R_OK 4 | |
62 | #endif | |
0f2d19dd JB |
63 | |
64 | \f | |
06721500 | 65 | /* Loading a file, given an absolute filename. */ |
0f2d19dd | 66 | |
26544b96 JB |
67 | /* Hook to run when we load a file, perhaps to announce the fact somewhere. |
68 | Applied to the full name of the file. */ | |
69 | static SCM *scm_loc_load_hook; | |
70 | ||
ec3a8ace NJ |
71 | /* The current reader (a fluid). */ |
72 | static SCM the_reader = SCM_BOOL_F; | |
73 | static size_t the_reader_fluid_num = 0; | |
74 | ||
3b3b36dd | 75 | SCM_DEFINE (scm_primitive_load, "primitive-load", 1, 0, 0, |
1bbd0b84 | 76 | (SCM filename), |
67e8151b MG |
77 | "Load the file named @var{filename} and evaluate its contents in\n" |
78 | "the top-level environment. The load paths are not searched;\n" | |
79 | "@var{filename} must either be a full pathname or be a pathname\n" | |
80 | "relative to the current directory. If the variable\n" | |
81 | "@code{%load-hook} is defined, it should be bound to a procedure\n" | |
82 | "that will be called before any code is loaded. See the\n" | |
83 | "documentation for @code{%load-hook} later in this section.") | |
1bbd0b84 | 84 | #define FUNC_NAME s_scm_primitive_load |
0f2d19dd | 85 | { |
26544b96 | 86 | SCM hook = *scm_loc_load_hook; |
a6d9e5ab | 87 | SCM_VALIDATE_STRING (1, filename); |
bc36d050 | 88 | if (scm_is_true (hook) && scm_is_false (scm_procedure_p (hook))) |
2ade72d7 DH |
89 | SCM_MISC_ERROR ("value of %load-hook is neither a procedure nor #f", |
90 | SCM_EOL); | |
26544b96 | 91 | |
bc36d050 | 92 | if (!scm_is_false (hook)) |
fdc28395 | 93 | scm_call_1 (hook, filename); |
26544b96 | 94 | |
1bbd0b84 | 95 | { /* scope */ |
b5623573 | 96 | SCM port = scm_open_file (filename, scm_from_locale_string ("r")); |
661ae7ab MV |
97 | scm_dynwind_begin (SCM_F_DYNWIND_REWINDABLE); |
98 | scm_i_dynwind_current_load_port (port); | |
b5623573 MV |
99 | |
100 | while (1) | |
101 | { | |
ec3a8ace NJ |
102 | SCM reader, form; |
103 | ||
104 | /* Lookup and use the current reader to read the next | |
105 | expression. */ | |
106 | reader = SCM_FAST_FLUID_REF (the_reader_fluid_num); | |
107 | if (reader == SCM_BOOL_F) | |
108 | form = scm_read (port); | |
109 | else | |
110 | form = scm_call_1 (reader, port); | |
111 | ||
b5623573 MV |
112 | if (SCM_EOF_OBJECT_P (form)) |
113 | break; | |
ec3a8ace | 114 | |
b5623573 MV |
115 | scm_primitive_eval_x (form); |
116 | } | |
117 | ||
661ae7ab | 118 | scm_dynwind_end (); |
0f2d19dd JB |
119 | scm_close_port (port); |
120 | } | |
b59b97ba | 121 | return SCM_UNSPECIFIED; |
0f2d19dd | 122 | } |
1bbd0b84 | 123 | #undef FUNC_NAME |
0f2d19dd | 124 | |
c519b272 MV |
125 | SCM |
126 | scm_c_primitive_load (const char *filename) | |
127 | { | |
cc95e00a | 128 | return scm_primitive_load (scm_from_locale_string (filename)); |
c519b272 MV |
129 | } |
130 | ||
0f2d19dd | 131 | \f |
3feedb00 MD |
132 | /* Builtin path to scheme library files. */ |
133 | #ifdef SCM_PKGDATA_DIR | |
a1ec6916 | 134 | SCM_DEFINE (scm_sys_package_data_dir, "%package-data-dir", 0, 0, 0, |
1bbd0b84 | 135 | (), |
b380b885 MD |
136 | "Return the name of the directory where Scheme packages, modules and\n" |
137 | "libraries are kept. On most Unix systems, this will be\n" | |
138 | "@samp{/usr/local/share/guile}.") | |
1bbd0b84 | 139 | #define FUNC_NAME s_scm_sys_package_data_dir |
3feedb00 | 140 | { |
cc95e00a | 141 | return scm_from_locale_string (SCM_PKGDATA_DIR); |
3feedb00 | 142 | } |
1bbd0b84 | 143 | #undef FUNC_NAME |
3feedb00 MD |
144 | #endif /* SCM_PKGDATA_DIR */ |
145 | ||
e8e9b690 | 146 | #ifdef SCM_LIBRARY_DIR |
a1ec6916 | 147 | SCM_DEFINE (scm_sys_library_dir, "%library-dir", 0,0,0, |
e8e9b690 | 148 | (), |
b380b885 MD |
149 | "Return the directory where the Guile Scheme library files are installed.\n" |
150 | "E.g., may return \"/usr/share/guile/1.3.5\".") | |
e8e9b690 GB |
151 | #define FUNC_NAME s_scm_sys_library_dir |
152 | { | |
cc95e00a | 153 | return scm_from_locale_string (SCM_LIBRARY_DIR); |
e8e9b690 GB |
154 | } |
155 | #undef FUNC_NAME | |
156 | #endif /* SCM_LIBRARY_DIR */ | |
157 | ||
158 | #ifdef SCM_SITE_DIR | |
a1ec6916 | 159 | SCM_DEFINE (scm_sys_site_dir, "%site-dir", 0,0,0, |
e8e9b690 | 160 | (), |
b380b885 MD |
161 | "Return the directory where the Guile site files are installed.\n" |
162 | "E.g., may return \"/usr/share/guile/site\".") | |
e8e9b690 GB |
163 | #define FUNC_NAME s_scm_sys_site_dir |
164 | { | |
cc95e00a | 165 | return scm_from_locale_string (SCM_SITE_DIR); |
e8e9b690 GB |
166 | } |
167 | #undef FUNC_NAME | |
168 | #endif /* SCM_SITE_DIR */ | |
169 | ||
170 | ||
171 | ||
3feedb00 | 172 | \f |
06721500 | 173 | /* Initializing the load path, and searching it. */ |
0f2d19dd | 174 | |
26544b96 | 175 | /* List of names of directories we search for files to load. */ |
06721500 JB |
176 | static SCM *scm_loc_load_path; |
177 | ||
26544b96 JB |
178 | /* List of extensions we try adding to the filenames. */ |
179 | static SCM *scm_loc_load_extensions; | |
180 | ||
5b197db8 AW |
181 | /* Like %load-path and %load-extensions, but for compiled files. */ |
182 | static SCM *scm_loc_load_compiled_path; | |
22f4ee48 AW |
183 | static SCM *scm_loc_load_compiled_extensions; |
184 | ||
01cddfc1 | 185 | |
a1ec6916 | 186 | SCM_DEFINE (scm_parse_path, "parse-path", 1, 1, 0, |
1bbd0b84 | 187 | (SCM path, SCM tail), |
d91788cb MG |
188 | "Parse @var{path}, which is expected to be a colon-separated\n" |
189 | "string, into a list and return the resulting list with\n" | |
190 | "@var{tail} appended. If @var{path} is @code{#f}, @var{tail}\n" | |
191 | "is returned.") | |
1bbd0b84 | 192 | #define FUNC_NAME s_scm_parse_path |
04e8fb0a | 193 | { |
7d04d68b MV |
194 | #ifdef __MINGW32__ |
195 | SCM sep = SCM_MAKE_CHAR (';'); | |
196 | #else | |
197 | SCM sep = SCM_MAKE_CHAR (':'); | |
198 | #endif | |
199 | ||
04e8fb0a MD |
200 | if (SCM_UNBNDP (tail)) |
201 | tail = SCM_EOL; | |
7888309b | 202 | return (scm_is_false (path) |
04e8fb0a | 203 | ? tail |
7d04d68b | 204 | : scm_append_x (scm_list_2 (scm_string_split (path, sep), tail))); |
04e8fb0a | 205 | } |
1bbd0b84 | 206 | #undef FUNC_NAME |
04e8fb0a MD |
207 | |
208 | ||
06721500 | 209 | /* Initialize the global variable %load-path, given the value of the |
3feedb00 | 210 | SCM_SITE_DIR and SCM_LIBRARY_DIR preprocessor symbols and the |
01cddfc1 | 211 | GUILE_LOAD_PATH environment variable. */ |
0f2d19dd | 212 | void |
06721500 JB |
213 | scm_init_load_path () |
214 | { | |
11c5e0bf | 215 | char *env; |
06721500 | 216 | SCM path = SCM_EOL; |
5b197db8 | 217 | SCM cpath = SCM_EOL; |
06721500 | 218 | |
3feedb00 | 219 | #ifdef SCM_LIBRARY_DIR |
02b84691 AW |
220 | env = getenv ("GUILE_SYSTEM_PATH"); |
221 | if (env && strcmp (env, "") == 0) | |
222 | /* special-case interpret system-path=="" as meaning no system path instead | |
223 | of '("") */ | |
224 | ; | |
225 | else if (env) | |
226 | path = scm_parse_path (scm_from_locale_string (env), path); | |
227 | else | |
228 | path = scm_list_3 (scm_from_locale_string (SCM_SITE_DIR), | |
229 | scm_from_locale_string (SCM_LIBRARY_DIR), | |
230 | scm_from_locale_string (SCM_PKGDATA_DIR)); | |
5b197db8 AW |
231 | |
232 | env = getenv ("GUILE_SYSTEM_COMPILED_PATH"); | |
233 | if (env && strcmp (env, "") == 0) | |
234 | /* like above */ | |
235 | ; | |
236 | else if (env) | |
237 | cpath = scm_parse_path (scm_from_locale_string (env), cpath); | |
238 | else | |
239 | { | |
240 | char *home; | |
241 | ||
242 | home = getenv ("HOME"); | |
243 | #ifdef HAVE_GETPWENT | |
244 | if (!home) | |
245 | { | |
246 | struct passwd *pwd; | |
247 | pwd = getpwuid (getuid ()); | |
248 | if (pwd) | |
249 | home = pwd->pw_dir; | |
250 | } | |
251 | #endif /* HAVE_GETPWENT */ | |
252 | if (home) | |
253 | { char buf[1024]; | |
254 | snprintf (buf, sizeof(buf), | |
255 | "%s/.guile-ccache/" SCM_EFFECTIVE_VERSION, home); | |
256 | cpath = scm_cons (scm_from_locale_string (buf), cpath); | |
257 | } | |
258 | ||
259 | cpath = scm_cons (scm_from_locale_string (SCM_CCACHE_DIR), cpath); | |
260 | } | |
3feedb00 | 261 | #endif /* SCM_LIBRARY_DIR */ |
06721500 | 262 | |
11c5e0bf MV |
263 | env = getenv ("GUILE_LOAD_PATH"); |
264 | if (env) | |
265 | path = scm_parse_path (scm_from_locale_string (env), path); | |
01cddfc1 | 266 | |
5b197db8 AW |
267 | env = getenv ("GUILE_LOAD_COMPILED_PATH"); |
268 | if (env) | |
269 | cpath = scm_parse_path (scm_from_locale_string (env), cpath); | |
270 | ||
06721500 | 271 | *scm_loc_load_path = path; |
5b197db8 | 272 | *scm_loc_load_compiled_path = cpath; |
06721500 JB |
273 | } |
274 | ||
04e8fb0a | 275 | SCM scm_listofnullstr; |
06721500 | 276 | |
7d04d68b MV |
277 | /* Utility functions for assembling C strings in a buffer. |
278 | */ | |
279 | ||
280 | struct stringbuf { | |
281 | char *buf, *ptr; | |
282 | size_t buf_len; | |
283 | }; | |
284 | ||
285 | static void | |
286 | stringbuf_free (void *data) | |
287 | { | |
288 | struct stringbuf *buf = (struct stringbuf *)data; | |
289 | free (buf->buf); | |
290 | } | |
291 | ||
292 | static void | |
293 | stringbuf_grow (struct stringbuf *buf) | |
294 | { | |
295 | size_t ptroff = buf->ptr - buf->buf; | |
296 | buf->buf_len *= 2; | |
7d04d68b MV |
297 | buf->buf = scm_realloc (buf->buf, buf->buf_len); |
298 | buf->ptr = buf->buf + ptroff; | |
299 | } | |
300 | ||
301 | static void | |
302 | stringbuf_cat_locale_string (struct stringbuf *buf, SCM str) | |
303 | { | |
304 | size_t max_len = buf->buf_len - (buf->ptr - buf->buf) - 1; | |
305 | size_t len = scm_to_locale_stringbuf (str, buf->ptr, max_len); | |
306 | if (len > max_len) | |
307 | { | |
308 | /* buffer is too small, double its size and try again. | |
309 | */ | |
310 | stringbuf_grow (buf); | |
311 | stringbuf_cat_locale_string (buf, str); | |
312 | } | |
313 | else | |
314 | { | |
315 | /* string fits, terminate it and check for embedded '\0'. | |
316 | */ | |
317 | buf->ptr[len] = '\0'; | |
318 | if (strlen (buf->ptr) != len) | |
319 | scm_misc_error (NULL, | |
320 | "string contains #\\nul character: ~S", | |
321 | scm_list_1 (str)); | |
322 | buf->ptr += len; | |
323 | } | |
324 | } | |
325 | ||
326 | static void | |
327 | stringbuf_cat (struct stringbuf *buf, char *str) | |
328 | { | |
329 | size_t max_len = buf->buf_len - (buf->ptr - buf->buf) - 1; | |
330 | size_t len = strlen (str); | |
331 | if (len > max_len) | |
332 | { | |
333 | /* buffer is too small, double its size and try again. | |
334 | */ | |
335 | stringbuf_grow (buf); | |
336 | stringbuf_cat (buf, str); | |
337 | } | |
338 | else | |
339 | { | |
340 | /* string fits, copy it into buffer. | |
341 | */ | |
342 | strcpy (buf->ptr, str); | |
343 | buf->ptr += len; | |
344 | } | |
345 | } | |
346 | ||
347 | ||
22f4ee48 AW |
348 | static int |
349 | scm_c_string_has_an_ext (char *str, size_t len, SCM extensions) | |
350 | { | |
351 | for (; !scm_is_null (extensions); extensions = SCM_CDR (extensions)) | |
352 | { | |
353 | char *ext; | |
354 | size_t extlen; | |
355 | int match; | |
356 | ext = scm_to_locale_string (SCM_CAR (extensions)); | |
357 | extlen = strlen (ext); | |
358 | match = (len > extlen && str[len - extlen - 1] == '.' | |
359 | && strncmp (str + (len - extlen), ext, extlen) == 0); | |
360 | free (ext); | |
361 | if (match) | |
362 | return 1; | |
363 | } | |
364 | return 0; | |
365 | } | |
366 | ||
04e8fb0a | 367 | /* Search PATH for a directory containing a file named FILENAME. |
06721500 | 368 | The file must be readable, and not a directory. |
26544b96 | 369 | If we find one, return its full filename; otherwise, return #f. |
56384176 JB |
370 | If FILENAME is absolute, return it unchanged. |
371 | If given, EXTENSIONS is a list of strings; for each directory | |
372 | in PATH, we search for FILENAME concatenated with each EXTENSION. */ | |
22f4ee48 AW |
373 | SCM_DEFINE (scm_search_path, "search-path", 2, 2, 0, |
374 | (SCM path, SCM filename, SCM extensions, SCM require_exts), | |
d91788cb MG |
375 | "Search @var{path} for a directory containing a file named\n" |
376 | "@var{filename}. The file must be readable, and not a directory.\n" | |
377 | "If we find one, return its full filename; otherwise, return\n" | |
378 | "@code{#f}. If @var{filename} is absolute, return it unchanged.\n" | |
379 | "If given, @var{extensions} is a list of strings; for each\n" | |
380 | "directory in @var{path}, we search for @var{filename}\n" | |
381 | "concatenated with each @var{extension}.") | |
1bbd0b84 | 382 | #define FUNC_NAME s_scm_search_path |
06721500 | 383 | { |
7d04d68b | 384 | struct stringbuf buf; |
56384176 | 385 | char *filename_chars; |
7d04d68b MV |
386 | size_t filename_len; |
387 | SCM result = SCM_BOOL_F; | |
06721500 | 388 | |
04e8fb0a | 389 | if (SCM_UNBNDP (extensions)) |
56384176 | 390 | extensions = SCM_EOL; |
56384176 | 391 | |
22f4ee48 AW |
392 | if (SCM_UNBNDP (require_exts)) |
393 | require_exts = SCM_BOOL_F; | |
394 | ||
661ae7ab | 395 | scm_dynwind_begin (0); |
7d04d68b MV |
396 | |
397 | filename_chars = scm_to_locale_string (filename); | |
398 | filename_len = strlen (filename_chars); | |
661ae7ab | 399 | scm_dynwind_free (filename_chars); |
06721500 | 400 | |
26544b96 | 401 | /* If FILENAME is absolute, return it unchanged. */ |
2e945bcc SJ |
402 | #ifdef __MINGW32__ |
403 | if (((filename_len >= 1) && | |
404 | (filename_chars[0] == '/' || filename_chars[0] == '\\')) || | |
405 | ((filename_len >= 3) && filename_chars[1] == ':' && | |
406 | ((filename_chars[0] >= 'a' && filename_chars[0] <= 'z') || | |
407 | (filename_chars[0] >= 'A' && filename_chars[0] <= 'Z')) && | |
408 | (filename_chars[2] == '/' || filename_chars[2] == '\\'))) | |
409 | #else | |
56384176 | 410 | if (filename_len >= 1 && filename_chars[0] == '/') |
2e945bcc | 411 | #endif |
7d04d68b | 412 | { |
22f4ee48 AW |
413 | SCM res = filename; |
414 | if (scm_is_true (require_exts) && | |
415 | !scm_c_string_has_an_ext (filename_chars, filename_len, | |
416 | extensions)) | |
417 | res = SCM_BOOL_F; | |
418 | ||
661ae7ab | 419 | scm_dynwind_end (); |
22f4ee48 | 420 | return res; |
7d04d68b | 421 | } |
26544b96 | 422 | |
56384176 JB |
423 | /* If FILENAME has an extension, don't try to add EXTENSIONS to it. */ |
424 | { | |
425 | char *endp; | |
426 | ||
427 | for (endp = filename_chars + filename_len - 1; | |
428 | endp >= filename_chars; | |
429 | endp--) | |
430 | { | |
431 | if (*endp == '.') | |
432 | { | |
22f4ee48 AW |
433 | if (scm_is_true (require_exts) && |
434 | !scm_c_string_has_an_ext (filename_chars, filename_len, | |
435 | extensions)) | |
436 | { | |
437 | /* This filename has an extension, but not one of the right | |
438 | ones... */ | |
439 | scm_dynwind_end (); | |
440 | return SCM_BOOL_F; | |
441 | } | |
56384176 JB |
442 | /* This filename already has an extension, so cancel the |
443 | list of extensions. */ | |
444 | extensions = SCM_EOL; | |
445 | break; | |
446 | } | |
2e945bcc SJ |
447 | #ifdef __MINGW32__ |
448 | else if (*endp == '/' || *endp == '\\') | |
449 | #else | |
56384176 | 450 | else if (*endp == '/') |
2e945bcc | 451 | #endif |
56384176 JB |
452 | /* This filename has no extension, so keep the current list |
453 | of extensions. */ | |
454 | break; | |
455 | } | |
456 | } | |
457 | ||
7d04d68b MV |
458 | /* This simplifies the loop below a bit. |
459 | */ | |
d2e53ed6 | 460 | if (scm_is_null (extensions)) |
7d04d68b | 461 | extensions = scm_listofnullstr; |
06721500 | 462 | |
7d04d68b MV |
463 | buf.buf_len = 512; |
464 | buf.buf = scm_malloc (buf.buf_len); | |
661ae7ab | 465 | scm_dynwind_unwind_handler (stringbuf_free, &buf, SCM_F_WIND_EXPLICITLY); |
0a74e31d | 466 | |
7d04d68b MV |
467 | /* Try every path element. |
468 | */ | |
d2e53ed6 | 469 | for (; scm_is_pair (path); path = SCM_CDR (path)) |
7d04d68b MV |
470 | { |
471 | SCM dir = SCM_CAR (path); | |
472 | SCM exts; | |
473 | size_t sans_ext_len; | |
474 | ||
475 | buf.ptr = buf.buf; | |
476 | stringbuf_cat_locale_string (&buf, dir); | |
477 | ||
478 | /* Concatenate the path name and the filename. */ | |
479 | ||
2e945bcc | 480 | #ifdef __MINGW32__ |
5a6d139b | 481 | if ((buf.ptr > buf.buf) && (buf.ptr[-1] != '/') && (buf.ptr[-1] != '\\')) |
2e945bcc | 482 | #else |
5a6d139b | 483 | if ((buf.ptr > buf.buf) && (buf.ptr[-1] != '/')) |
2e945bcc | 484 | #endif |
7d04d68b MV |
485 | stringbuf_cat (&buf, "/"); |
486 | ||
487 | stringbuf_cat (&buf, filename_chars); | |
488 | sans_ext_len = buf.ptr - buf.buf; | |
489 | ||
490 | /* Try every extension. */ | |
d2e53ed6 | 491 | for (exts = extensions; scm_is_pair (exts); exts = SCM_CDR (exts)) |
7d04d68b MV |
492 | { |
493 | SCM ext = SCM_CAR (exts); | |
494 | struct stat mode; | |
495 | ||
496 | buf.ptr = buf.buf + sans_ext_len; | |
497 | stringbuf_cat_locale_string (&buf, ext); | |
498 | ||
499 | /* If the file exists at all, we should return it. If the | |
500 | file is inaccessible, then that's an error. */ | |
501 | ||
7d04d68b MV |
502 | if (stat (buf.buf, &mode) == 0 |
503 | && ! (mode.st_mode & S_IFDIR)) | |
504 | { | |
505 | result = scm_from_locale_string (buf.buf); | |
506 | goto end; | |
507 | } | |
508 | } | |
509 | ||
510 | if (!SCM_NULL_OR_NIL_P (exts)) | |
511 | scm_wrong_type_arg_msg (NULL, 0, extensions, "proper list"); | |
512 | } | |
56384176 | 513 | |
7d04d68b MV |
514 | if (!SCM_NULL_OR_NIL_P (path)) |
515 | scm_wrong_type_arg_msg (NULL, 0, path, "proper list"); | |
56384176 | 516 | |
7d04d68b | 517 | end: |
661ae7ab | 518 | scm_dynwind_end (); |
7d04d68b | 519 | return result; |
06721500 | 520 | } |
1bbd0b84 | 521 | #undef FUNC_NAME |
06721500 JB |
522 | |
523 | ||
04e8fb0a MD |
524 | /* Search %load-path for a directory containing a file named FILENAME. |
525 | The file must be readable, and not a directory. | |
526 | If we find one, return its full filename; otherwise, return #f. | |
527 | If FILENAME is absolute, return it unchanged. */ | |
3b3b36dd | 528 | SCM_DEFINE (scm_sys_search_load_path, "%search-load-path", 1, 0, 0, |
67e8151b MG |
529 | (SCM filename), |
530 | "Search @var{%load-path} for the file named @var{filename},\n" | |
531 | "which must be readable by the current user. If @var{filename}\n" | |
532 | "is found in the list of paths to search or is an absolute\n" | |
533 | "pathname, return its full pathname. Otherwise, return\n" | |
534 | "@code{#f}. Filenames may have any of the optional extensions\n" | |
535 | "in the @code{%load-extensions} list; @code{%search-load-path}\n" | |
536 | "will try each extension automatically.") | |
1bbd0b84 | 537 | #define FUNC_NAME s_scm_sys_search_load_path |
04e8fb0a MD |
538 | { |
539 | SCM path = *scm_loc_load_path; | |
540 | SCM exts = *scm_loc_load_extensions; | |
a6d9e5ab | 541 | SCM_VALIDATE_STRING (1, filename); |
1bbd0b84 | 542 | |
2ade72d7 DH |
543 | if (scm_ilength (path) < 0) |
544 | SCM_MISC_ERROR ("%load-path is not a proper list", SCM_EOL); | |
545 | if (scm_ilength (exts) < 0) | |
546 | SCM_MISC_ERROR ("%load-extension list is not a proper list", SCM_EOL); | |
22f4ee48 | 547 | return scm_search_path (path, filename, exts, SCM_UNDEFINED); |
04e8fb0a | 548 | } |
1bbd0b84 | 549 | #undef FUNC_NAME |
04e8fb0a MD |
550 | |
551 | ||
1d022387 AW |
552 | static int |
553 | compiled_is_newer (SCM full_filename, SCM compiled_filename) | |
554 | { | |
555 | char *source, *compiled; | |
556 | struct stat stat_source, stat_compiled; | |
557 | int res; | |
558 | ||
559 | source = scm_to_locale_string (full_filename); | |
560 | compiled = scm_to_locale_string (compiled_filename); | |
561 | ||
562 | if (stat (source, &stat_source) == 0 | |
563 | && stat (compiled, &stat_compiled) == 0 | |
564 | && stat_source.st_mtime <= stat_compiled.st_mtime) | |
565 | { | |
566 | res = 1; | |
567 | } | |
568 | else | |
569 | { | |
570 | scm_puts (";;; note: source file ", scm_current_error_port ()); | |
571 | scm_puts (source, scm_current_error_port ()); | |
572 | scm_puts (" newer than compiled ", scm_current_error_port ()); | |
573 | scm_puts (compiled, scm_current_error_port ()); | |
574 | scm_puts ("\n", scm_current_error_port ()); | |
575 | res = 0; | |
576 | ||
577 | } | |
578 | free (source); | |
579 | free (compiled); | |
580 | return res; | |
581 | } | |
582 | ||
583 | static SCM | |
584 | scm_try_autocompile (SCM source) | |
585 | { | |
586 | return SCM_BOOL_F; | |
587 | } | |
588 | ||
3b3b36dd | 589 | SCM_DEFINE (scm_primitive_load_path, "primitive-load-path", 1, 0, 0, |
67e8151b MG |
590 | (SCM filename), |
591 | "Search @var{%load-path} for the file named @var{filename} and\n" | |
592 | "load it into the top-level environment. If @var{filename} is a\n" | |
593 | "relative pathname and is not found in the list of search paths,\n" | |
594 | "an error is signalled.") | |
1bbd0b84 | 595 | #define FUNC_NAME s_scm_primitive_load_path |
06721500 | 596 | { |
22f4ee48 | 597 | SCM full_filename, compiled_filename; |
26544b96 | 598 | |
26544b96 | 599 | full_filename = scm_sys_search_load_path (filename); |
5b197db8 | 600 | compiled_filename = scm_search_path (*scm_loc_load_compiled_path, |
22f4ee48 AW |
601 | filename, |
602 | *scm_loc_load_compiled_extensions, | |
603 | SCM_BOOL_T); | |
26544b96 | 604 | |
22f4ee48 | 605 | if (scm_is_false (full_filename) && scm_is_false (compiled_filename)) |
ffa747a6 MV |
606 | SCM_MISC_ERROR ("Unable to find file ~S in load path", |
607 | scm_list_1 (filename)); | |
26544b96 | 608 | |
1d022387 AW |
609 | if (scm_is_false (full_filename) |
610 | || (scm_is_true (compiled_filename) | |
611 | && compiled_is_newer (full_filename, compiled_filename))) | |
22f4ee48 AW |
612 | return scm_load_compiled_with_vm (compiled_filename); |
613 | ||
1d022387 AW |
614 | compiled_filename = scm_try_autocompile (full_filename); |
615 | if (scm_is_true (compiled_filename)) | |
616 | return scm_load_compiled_with_vm (compiled_filename); | |
617 | else | |
618 | return scm_primitive_load (full_filename); | |
06721500 | 619 | } |
1bbd0b84 | 620 | #undef FUNC_NAME |
06721500 | 621 | |
c519b272 MV |
622 | SCM |
623 | scm_c_primitive_load_path (const char *filename) | |
624 | { | |
cc95e00a | 625 | return scm_primitive_load_path (scm_from_locale_string (filename)); |
c519b272 MV |
626 | } |
627 | ||
06721500 | 628 | \f |
e151bee6 | 629 | /* Information about the build environment. */ |
06721500 | 630 | |
e151bee6 JB |
631 | /* Initialize the scheme variable %guile-build-info, based on data |
632 | provided by the Makefile, via libpath.h. */ | |
633 | static void | |
634 | init_build_info () | |
635 | { | |
636 | static struct { char *name; char *value; } info[] = SCM_BUILD_INFO; | |
86d31dfe | 637 | SCM *loc = SCM_VARIABLE_LOC (scm_c_define ("%guile-build-info", SCM_EOL)); |
c014a02e | 638 | unsigned long i; |
e151bee6 JB |
639 | |
640 | for (i = 0; i < (sizeof (info) / sizeof (info[0])); i++) | |
cc95e00a MV |
641 | { |
642 | SCM key = scm_from_locale_symbol (info[i].name); | |
643 | SCM val = scm_from_locale_string (info[i].value); | |
644 | *loc = scm_acons (key, val, *loc); | |
645 | } | |
e151bee6 JB |
646 | } |
647 | ||
e151bee6 | 648 | \f |
0f2d19dd JB |
649 | void |
650 | scm_init_load () | |
0f2d19dd | 651 | { |
1afff620 | 652 | scm_listofnullstr = scm_permanent_object (scm_list_1 (scm_nullstr)); |
86d31dfe | 653 | scm_loc_load_path = SCM_VARIABLE_LOC (scm_c_define ("%load-path", SCM_EOL)); |
26544b96 | 654 | scm_loc_load_extensions |
86d31dfe | 655 | = SCM_VARIABLE_LOC (scm_c_define ("%load-extensions", |
cc95e00a MV |
656 | scm_list_2 (scm_from_locale_string (".scm"), |
657 | scm_nullstr))); | |
5b197db8 AW |
658 | scm_loc_load_compiled_path |
659 | = SCM_VARIABLE_LOC (scm_c_define ("%load-compiled-path", SCM_EOL)); | |
22f4ee48 AW |
660 | scm_loc_load_compiled_extensions |
661 | = SCM_VARIABLE_LOC (scm_c_define ("%load-compiled-extensions", | |
662 | scm_list_1 (scm_from_locale_string (".go")))); | |
86d31dfe | 663 | scm_loc_load_hook = SCM_VARIABLE_LOC (scm_c_define ("%load-hook", SCM_BOOL_F)); |
06721500 | 664 | |
ec3a8ace NJ |
665 | the_reader = scm_make_fluid (); |
666 | the_reader_fluid_num = SCM_FLUID_NUM (the_reader); | |
667 | SCM_FAST_FLUID_SET_X (the_reader_fluid_num, SCM_BOOL_F); | |
668 | scm_c_define("current-reader", the_reader); | |
669 | ||
e151bee6 JB |
670 | init_build_info (); |
671 | ||
a0599745 | 672 | #include "libguile/load.x" |
0f2d19dd | 673 | } |
89e00824 ML |
674 | |
675 | /* | |
676 | Local Variables: | |
677 | c-file-style: "gnu" | |
678 | End: | |
679 | */ |