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 | 3 | * This library is free software; you can redistribute it and/or |
53befeb7 NJ |
4 | * modify it under the terms of the GNU Lesser General Public License |
5 | * as published by the Free Software Foundation; either version 3 of | |
6 | * the License, or (at your option) any later version. | |
0f2d19dd | 7 | * |
53befeb7 NJ |
8 | * This library is distributed in the hope that it will be useful, but |
9 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
73be1d9e MV |
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 | |
53befeb7 NJ |
15 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
16 | * 02110-1301 USA | |
73be1d9e | 17 | */ |
1bbd0b84 | 18 | |
1bbd0b84 | 19 | |
0f2d19dd JB |
20 | \f |
21 | ||
dbb605f5 | 22 | #ifdef HAVE_CONFIG_H |
cbd41c89 RB |
23 | # include <config.h> |
24 | #endif | |
25 | ||
13070bd3 | 26 | #include <string.h> |
7d04d68b | 27 | #include <stdio.h> |
13070bd3 | 28 | |
a0599745 MD |
29 | #include "libguile/_scm.h" |
30 | #include "libguile/libpath.h" | |
31 | #include "libguile/fports.h" | |
32 | #include "libguile/read.h" | |
33 | #include "libguile/eval.h" | |
34 | #include "libguile/throw.h" | |
35 | #include "libguile/alist.h" | |
36 | #include "libguile/dynwind.h" | |
37 | #include "libguile/root.h" | |
38 | #include "libguile/strings.h" | |
f33b174d | 39 | #include "libguile/modules.h" |
c96d76b8 | 40 | #include "libguile/lang.h" |
7d04d68b | 41 | #include "libguile/chars.h" |
c44ca4fe | 42 | #include "libguile/srfi-13.h" |
a0599745 MD |
43 | |
44 | #include "libguile/validate.h" | |
45 | #include "libguile/load.h" | |
ec3a8ace | 46 | #include "libguile/fluids.h" |
06721500 | 47 | |
22f4ee48 AW |
48 | #include "libguile/vm.h" /* for load-compiled/vm */ |
49 | ||
06721500 JB |
50 | #include <sys/types.h> |
51 | #include <sys/stat.h> | |
52 | ||
53 | #ifdef HAVE_UNISTD_H | |
54 | #include <unistd.h> | |
55 | #endif /* HAVE_UNISTD_H */ | |
56 | ||
5b197db8 AW |
57 | #ifdef HAVE_PWD_H |
58 | #include <pwd.h> | |
59 | #endif /* HAVE_PWD_H */ | |
60 | ||
06721500 JB |
61 | #ifndef R_OK |
62 | #define R_OK 4 | |
63 | #endif | |
0f2d19dd JB |
64 | |
65 | \f | |
06721500 | 66 | /* Loading a file, given an absolute filename. */ |
0f2d19dd | 67 | |
26544b96 JB |
68 | /* Hook to run when we load a file, perhaps to announce the fact somewhere. |
69 | Applied to the full name of the file. */ | |
70 | static SCM *scm_loc_load_hook; | |
71 | ||
ec3a8ace NJ |
72 | /* The current reader (a fluid). */ |
73 | static SCM the_reader = SCM_BOOL_F; | |
74 | static size_t the_reader_fluid_num = 0; | |
75 | ||
3b3b36dd | 76 | SCM_DEFINE (scm_primitive_load, "primitive-load", 1, 0, 0, |
1bbd0b84 | 77 | (SCM filename), |
67e8151b MG |
78 | "Load the file named @var{filename} and evaluate its contents in\n" |
79 | "the top-level environment. The load paths are not searched;\n" | |
80 | "@var{filename} must either be a full pathname or be a pathname\n" | |
81 | "relative to the current directory. If the variable\n" | |
82 | "@code{%load-hook} is defined, it should be bound to a procedure\n" | |
83 | "that will be called before any code is loaded. See the\n" | |
84 | "documentation for @code{%load-hook} later in this section.") | |
1bbd0b84 | 85 | #define FUNC_NAME s_scm_primitive_load |
0f2d19dd | 86 | { |
26544b96 | 87 | SCM hook = *scm_loc_load_hook; |
a6d9e5ab | 88 | SCM_VALIDATE_STRING (1, filename); |
bc36d050 | 89 | if (scm_is_true (hook) && scm_is_false (scm_procedure_p (hook))) |
2ade72d7 DH |
90 | SCM_MISC_ERROR ("value of %load-hook is neither a procedure nor #f", |
91 | SCM_EOL); | |
26544b96 | 92 | |
bc36d050 | 93 | if (!scm_is_false (hook)) |
fdc28395 | 94 | scm_call_1 (hook, filename); |
26544b96 | 95 | |
1bbd0b84 | 96 | { /* scope */ |
b5623573 | 97 | SCM port = scm_open_file (filename, scm_from_locale_string ("r")); |
661ae7ab MV |
98 | scm_dynwind_begin (SCM_F_DYNWIND_REWINDABLE); |
99 | scm_i_dynwind_current_load_port (port); | |
b5623573 MV |
100 | |
101 | while (1) | |
102 | { | |
ec3a8ace NJ |
103 | SCM reader, form; |
104 | ||
105 | /* Lookup and use the current reader to read the next | |
106 | expression. */ | |
107 | reader = SCM_FAST_FLUID_REF (the_reader_fluid_num); | |
108 | if (reader == SCM_BOOL_F) | |
109 | form = scm_read (port); | |
110 | else | |
111 | form = scm_call_1 (reader, port); | |
112 | ||
b5623573 MV |
113 | if (SCM_EOF_OBJECT_P (form)) |
114 | break; | |
ec3a8ace | 115 | |
b5623573 MV |
116 | scm_primitive_eval_x (form); |
117 | } | |
118 | ||
661ae7ab | 119 | scm_dynwind_end (); |
0f2d19dd JB |
120 | scm_close_port (port); |
121 | } | |
b59b97ba | 122 | return SCM_UNSPECIFIED; |
0f2d19dd | 123 | } |
1bbd0b84 | 124 | #undef FUNC_NAME |
0f2d19dd | 125 | |
c519b272 MV |
126 | SCM |
127 | scm_c_primitive_load (const char *filename) | |
128 | { | |
cc95e00a | 129 | return scm_primitive_load (scm_from_locale_string (filename)); |
c519b272 MV |
130 | } |
131 | ||
0f2d19dd | 132 | \f |
3feedb00 MD |
133 | /* Builtin path to scheme library files. */ |
134 | #ifdef SCM_PKGDATA_DIR | |
a1ec6916 | 135 | SCM_DEFINE (scm_sys_package_data_dir, "%package-data-dir", 0, 0, 0, |
1bbd0b84 | 136 | (), |
b380b885 MD |
137 | "Return the name of the directory where Scheme packages, modules and\n" |
138 | "libraries are kept. On most Unix systems, this will be\n" | |
139 | "@samp{/usr/local/share/guile}.") | |
1bbd0b84 | 140 | #define FUNC_NAME s_scm_sys_package_data_dir |
3feedb00 | 141 | { |
cc95e00a | 142 | return scm_from_locale_string (SCM_PKGDATA_DIR); |
3feedb00 | 143 | } |
1bbd0b84 | 144 | #undef FUNC_NAME |
3feedb00 MD |
145 | #endif /* SCM_PKGDATA_DIR */ |
146 | ||
e8e9b690 | 147 | #ifdef SCM_LIBRARY_DIR |
a1ec6916 | 148 | SCM_DEFINE (scm_sys_library_dir, "%library-dir", 0,0,0, |
e8e9b690 | 149 | (), |
b380b885 MD |
150 | "Return the directory where the Guile Scheme library files are installed.\n" |
151 | "E.g., may return \"/usr/share/guile/1.3.5\".") | |
e8e9b690 GB |
152 | #define FUNC_NAME s_scm_sys_library_dir |
153 | { | |
cc95e00a | 154 | return scm_from_locale_string (SCM_LIBRARY_DIR); |
e8e9b690 GB |
155 | } |
156 | #undef FUNC_NAME | |
157 | #endif /* SCM_LIBRARY_DIR */ | |
158 | ||
159 | #ifdef SCM_SITE_DIR | |
a1ec6916 | 160 | SCM_DEFINE (scm_sys_site_dir, "%site-dir", 0,0,0, |
e8e9b690 | 161 | (), |
b380b885 MD |
162 | "Return the directory where the Guile site files are installed.\n" |
163 | "E.g., may return \"/usr/share/guile/site\".") | |
e8e9b690 GB |
164 | #define FUNC_NAME s_scm_sys_site_dir |
165 | { | |
cc95e00a | 166 | return scm_from_locale_string (SCM_SITE_DIR); |
e8e9b690 GB |
167 | } |
168 | #undef FUNC_NAME | |
169 | #endif /* SCM_SITE_DIR */ | |
170 | ||
171 | ||
172 | ||
3feedb00 | 173 | \f |
06721500 | 174 | /* Initializing the load path, and searching it. */ |
0f2d19dd | 175 | |
26544b96 | 176 | /* List of names of directories we search for files to load. */ |
06721500 JB |
177 | static SCM *scm_loc_load_path; |
178 | ||
26544b96 JB |
179 | /* List of extensions we try adding to the filenames. */ |
180 | static SCM *scm_loc_load_extensions; | |
181 | ||
5b197db8 AW |
182 | /* Like %load-path and %load-extensions, but for compiled files. */ |
183 | static SCM *scm_loc_load_compiled_path; | |
22f4ee48 AW |
184 | static SCM *scm_loc_load_compiled_extensions; |
185 | ||
ee001750 AW |
186 | /* Whether we should try to auto-compile. */ |
187 | static SCM *scm_loc_load_should_autocompile; | |
01cddfc1 | 188 | |
5ea401bf AW |
189 | /* The fallback path for autocompilation */ |
190 | static SCM *scm_loc_compile_fallback_path; | |
191 | ||
a1ec6916 | 192 | SCM_DEFINE (scm_parse_path, "parse-path", 1, 1, 0, |
1bbd0b84 | 193 | (SCM path, SCM tail), |
d91788cb MG |
194 | "Parse @var{path}, which is expected to be a colon-separated\n" |
195 | "string, into a list and return the resulting list with\n" | |
196 | "@var{tail} appended. If @var{path} is @code{#f}, @var{tail}\n" | |
197 | "is returned.") | |
1bbd0b84 | 198 | #define FUNC_NAME s_scm_parse_path |
04e8fb0a | 199 | { |
7d04d68b MV |
200 | #ifdef __MINGW32__ |
201 | SCM sep = SCM_MAKE_CHAR (';'); | |
202 | #else | |
203 | SCM sep = SCM_MAKE_CHAR (':'); | |
204 | #endif | |
205 | ||
04e8fb0a MD |
206 | if (SCM_UNBNDP (tail)) |
207 | tail = SCM_EOL; | |
7888309b | 208 | return (scm_is_false (path) |
04e8fb0a | 209 | ? tail |
7d04d68b | 210 | : scm_append_x (scm_list_2 (scm_string_split (path, sep), tail))); |
04e8fb0a | 211 | } |
1bbd0b84 | 212 | #undef FUNC_NAME |
04e8fb0a MD |
213 | |
214 | ||
06721500 | 215 | /* Initialize the global variable %load-path, given the value of the |
3feedb00 | 216 | SCM_SITE_DIR and SCM_LIBRARY_DIR preprocessor symbols and the |
01cddfc1 | 217 | GUILE_LOAD_PATH environment variable. */ |
0f2d19dd | 218 | void |
06721500 JB |
219 | scm_init_load_path () |
220 | { | |
11c5e0bf | 221 | char *env; |
06721500 | 222 | SCM path = SCM_EOL; |
5b197db8 | 223 | SCM cpath = SCM_EOL; |
06721500 | 224 | |
3feedb00 | 225 | #ifdef SCM_LIBRARY_DIR |
02b84691 AW |
226 | env = getenv ("GUILE_SYSTEM_PATH"); |
227 | if (env && strcmp (env, "") == 0) | |
228 | /* special-case interpret system-path=="" as meaning no system path instead | |
229 | of '("") */ | |
230 | ; | |
231 | else if (env) | |
232 | path = scm_parse_path (scm_from_locale_string (env), path); | |
233 | else | |
234 | path = scm_list_3 (scm_from_locale_string (SCM_SITE_DIR), | |
235 | scm_from_locale_string (SCM_LIBRARY_DIR), | |
236 | scm_from_locale_string (SCM_PKGDATA_DIR)); | |
5b197db8 AW |
237 | |
238 | env = getenv ("GUILE_SYSTEM_COMPILED_PATH"); | |
239 | if (env && strcmp (env, "") == 0) | |
240 | /* like above */ | |
241 | ; | |
242 | else if (env) | |
243 | cpath = scm_parse_path (scm_from_locale_string (env), cpath); | |
244 | else | |
3c997c4b AW |
245 | cpath = scm_cons (scm_from_locale_string (SCM_CCACHE_DIR), cpath); |
246 | ||
247 | #endif /* SCM_LIBRARY_DIR */ | |
248 | ||
249 | { | |
250 | char *home; | |
5b197db8 | 251 | |
3c997c4b | 252 | home = getenv ("HOME"); |
5b197db8 | 253 | #ifdef HAVE_GETPWENT |
3c997c4b AW |
254 | if (!home) |
255 | { | |
256 | struct passwd *pwd; | |
257 | pwd = getpwuid (getuid ()); | |
258 | if (pwd) | |
259 | home = pwd->pw_dir; | |
260 | } | |
5b197db8 | 261 | #endif /* HAVE_GETPWENT */ |
3c997c4b AW |
262 | if (home) |
263 | { char buf[1024]; | |
264 | snprintf (buf, sizeof(buf), | |
265 | "%s/.guile-ccache/" SCM_EFFECTIVE_VERSION, home); | |
266 | *scm_loc_compile_fallback_path = scm_from_locale_string (buf); | |
267 | } | |
268 | } | |
06721500 | 269 | |
11c5e0bf MV |
270 | env = getenv ("GUILE_LOAD_PATH"); |
271 | if (env) | |
272 | path = scm_parse_path (scm_from_locale_string (env), path); | |
01cddfc1 | 273 | |
5b197db8 AW |
274 | env = getenv ("GUILE_LOAD_COMPILED_PATH"); |
275 | if (env) | |
276 | cpath = scm_parse_path (scm_from_locale_string (env), cpath); | |
277 | ||
06721500 | 278 | *scm_loc_load_path = path; |
5b197db8 | 279 | *scm_loc_load_compiled_path = cpath; |
06721500 JB |
280 | } |
281 | ||
04e8fb0a | 282 | SCM scm_listofnullstr; |
06721500 | 283 | |
7d04d68b MV |
284 | /* Utility functions for assembling C strings in a buffer. |
285 | */ | |
286 | ||
287 | struct stringbuf { | |
288 | char *buf, *ptr; | |
289 | size_t buf_len; | |
290 | }; | |
291 | ||
292 | static void | |
293 | stringbuf_free (void *data) | |
294 | { | |
295 | struct stringbuf *buf = (struct stringbuf *)data; | |
296 | free (buf->buf); | |
297 | } | |
298 | ||
299 | static void | |
300 | stringbuf_grow (struct stringbuf *buf) | |
301 | { | |
302 | size_t ptroff = buf->ptr - buf->buf; | |
303 | buf->buf_len *= 2; | |
7d04d68b MV |
304 | buf->buf = scm_realloc (buf->buf, buf->buf_len); |
305 | buf->ptr = buf->buf + ptroff; | |
306 | } | |
307 | ||
308 | static void | |
309 | stringbuf_cat_locale_string (struct stringbuf *buf, SCM str) | |
310 | { | |
311 | size_t max_len = buf->buf_len - (buf->ptr - buf->buf) - 1; | |
312 | size_t len = scm_to_locale_stringbuf (str, buf->ptr, max_len); | |
313 | if (len > max_len) | |
314 | { | |
315 | /* buffer is too small, double its size and try again. | |
316 | */ | |
317 | stringbuf_grow (buf); | |
318 | stringbuf_cat_locale_string (buf, str); | |
319 | } | |
320 | else | |
321 | { | |
322 | /* string fits, terminate it and check for embedded '\0'. | |
323 | */ | |
324 | buf->ptr[len] = '\0'; | |
325 | if (strlen (buf->ptr) != len) | |
326 | scm_misc_error (NULL, | |
327 | "string contains #\\nul character: ~S", | |
328 | scm_list_1 (str)); | |
329 | buf->ptr += len; | |
330 | } | |
331 | } | |
332 | ||
333 | static void | |
334 | stringbuf_cat (struct stringbuf *buf, char *str) | |
335 | { | |
336 | size_t max_len = buf->buf_len - (buf->ptr - buf->buf) - 1; | |
337 | size_t len = strlen (str); | |
338 | if (len > max_len) | |
339 | { | |
340 | /* buffer is too small, double its size and try again. | |
341 | */ | |
342 | stringbuf_grow (buf); | |
343 | stringbuf_cat (buf, str); | |
344 | } | |
345 | else | |
346 | { | |
347 | /* string fits, copy it into buffer. | |
348 | */ | |
349 | strcpy (buf->ptr, str); | |
350 | buf->ptr += len; | |
351 | } | |
352 | } | |
353 | ||
354 | ||
22f4ee48 AW |
355 | static int |
356 | scm_c_string_has_an_ext (char *str, size_t len, SCM extensions) | |
357 | { | |
358 | for (; !scm_is_null (extensions); extensions = SCM_CDR (extensions)) | |
359 | { | |
360 | char *ext; | |
361 | size_t extlen; | |
362 | int match; | |
363 | ext = scm_to_locale_string (SCM_CAR (extensions)); | |
364 | extlen = strlen (ext); | |
365 | match = (len > extlen && str[len - extlen - 1] == '.' | |
366 | && strncmp (str + (len - extlen), ext, extlen) == 0); | |
367 | free (ext); | |
368 | if (match) | |
369 | return 1; | |
370 | } | |
371 | return 0; | |
372 | } | |
373 | ||
04e8fb0a | 374 | /* Search PATH for a directory containing a file named FILENAME. |
06721500 | 375 | The file must be readable, and not a directory. |
26544b96 | 376 | If we find one, return its full filename; otherwise, return #f. |
56384176 JB |
377 | If FILENAME is absolute, return it unchanged. |
378 | If given, EXTENSIONS is a list of strings; for each directory | |
379 | in PATH, we search for FILENAME concatenated with each EXTENSION. */ | |
22f4ee48 AW |
380 | SCM_DEFINE (scm_search_path, "search-path", 2, 2, 0, |
381 | (SCM path, SCM filename, SCM extensions, SCM require_exts), | |
d91788cb MG |
382 | "Search @var{path} for a directory containing a file named\n" |
383 | "@var{filename}. The file must be readable, and not a directory.\n" | |
384 | "If we find one, return its full filename; otherwise, return\n" | |
385 | "@code{#f}. If @var{filename} is absolute, return it unchanged.\n" | |
386 | "If given, @var{extensions} is a list of strings; for each\n" | |
387 | "directory in @var{path}, we search for @var{filename}\n" | |
388 | "concatenated with each @var{extension}.") | |
1bbd0b84 | 389 | #define FUNC_NAME s_scm_search_path |
06721500 | 390 | { |
7d04d68b | 391 | struct stringbuf buf; |
56384176 | 392 | char *filename_chars; |
7d04d68b MV |
393 | size_t filename_len; |
394 | SCM result = SCM_BOOL_F; | |
06721500 | 395 | |
04e8fb0a | 396 | if (SCM_UNBNDP (extensions)) |
56384176 | 397 | extensions = SCM_EOL; |
56384176 | 398 | |
22f4ee48 AW |
399 | if (SCM_UNBNDP (require_exts)) |
400 | require_exts = SCM_BOOL_F; | |
401 | ||
661ae7ab | 402 | scm_dynwind_begin (0); |
7d04d68b MV |
403 | |
404 | filename_chars = scm_to_locale_string (filename); | |
405 | filename_len = strlen (filename_chars); | |
661ae7ab | 406 | scm_dynwind_free (filename_chars); |
06721500 | 407 | |
26544b96 | 408 | /* If FILENAME is absolute, return it unchanged. */ |
2e945bcc SJ |
409 | #ifdef __MINGW32__ |
410 | if (((filename_len >= 1) && | |
411 | (filename_chars[0] == '/' || filename_chars[0] == '\\')) || | |
412 | ((filename_len >= 3) && filename_chars[1] == ':' && | |
413 | ((filename_chars[0] >= 'a' && filename_chars[0] <= 'z') || | |
414 | (filename_chars[0] >= 'A' && filename_chars[0] <= 'Z')) && | |
415 | (filename_chars[2] == '/' || filename_chars[2] == '\\'))) | |
416 | #else | |
56384176 | 417 | if (filename_len >= 1 && filename_chars[0] == '/') |
2e945bcc | 418 | #endif |
7d04d68b | 419 | { |
22f4ee48 AW |
420 | SCM res = filename; |
421 | if (scm_is_true (require_exts) && | |
422 | !scm_c_string_has_an_ext (filename_chars, filename_len, | |
423 | extensions)) | |
424 | res = SCM_BOOL_F; | |
425 | ||
661ae7ab | 426 | scm_dynwind_end (); |
22f4ee48 | 427 | return res; |
7d04d68b | 428 | } |
26544b96 | 429 | |
56384176 JB |
430 | /* If FILENAME has an extension, don't try to add EXTENSIONS to it. */ |
431 | { | |
432 | char *endp; | |
433 | ||
434 | for (endp = filename_chars + filename_len - 1; | |
435 | endp >= filename_chars; | |
436 | endp--) | |
437 | { | |
438 | if (*endp == '.') | |
439 | { | |
22f4ee48 AW |
440 | if (scm_is_true (require_exts) && |
441 | !scm_c_string_has_an_ext (filename_chars, filename_len, | |
442 | extensions)) | |
443 | { | |
444 | /* This filename has an extension, but not one of the right | |
445 | ones... */ | |
446 | scm_dynwind_end (); | |
447 | return SCM_BOOL_F; | |
448 | } | |
56384176 JB |
449 | /* This filename already has an extension, so cancel the |
450 | list of extensions. */ | |
451 | extensions = SCM_EOL; | |
452 | break; | |
453 | } | |
2e945bcc SJ |
454 | #ifdef __MINGW32__ |
455 | else if (*endp == '/' || *endp == '\\') | |
456 | #else | |
56384176 | 457 | else if (*endp == '/') |
2e945bcc | 458 | #endif |
56384176 JB |
459 | /* This filename has no extension, so keep the current list |
460 | of extensions. */ | |
461 | break; | |
462 | } | |
463 | } | |
464 | ||
7d04d68b MV |
465 | /* This simplifies the loop below a bit. |
466 | */ | |
d2e53ed6 | 467 | if (scm_is_null (extensions)) |
7d04d68b | 468 | extensions = scm_listofnullstr; |
06721500 | 469 | |
7d04d68b MV |
470 | buf.buf_len = 512; |
471 | buf.buf = scm_malloc (buf.buf_len); | |
661ae7ab | 472 | scm_dynwind_unwind_handler (stringbuf_free, &buf, SCM_F_WIND_EXPLICITLY); |
0a74e31d | 473 | |
7d04d68b MV |
474 | /* Try every path element. |
475 | */ | |
d2e53ed6 | 476 | for (; scm_is_pair (path); path = SCM_CDR (path)) |
7d04d68b MV |
477 | { |
478 | SCM dir = SCM_CAR (path); | |
479 | SCM exts; | |
480 | size_t sans_ext_len; | |
481 | ||
482 | buf.ptr = buf.buf; | |
483 | stringbuf_cat_locale_string (&buf, dir); | |
484 | ||
485 | /* Concatenate the path name and the filename. */ | |
486 | ||
2e945bcc | 487 | #ifdef __MINGW32__ |
5a6d139b | 488 | if ((buf.ptr > buf.buf) && (buf.ptr[-1] != '/') && (buf.ptr[-1] != '\\')) |
2e945bcc | 489 | #else |
5a6d139b | 490 | if ((buf.ptr > buf.buf) && (buf.ptr[-1] != '/')) |
2e945bcc | 491 | #endif |
7d04d68b MV |
492 | stringbuf_cat (&buf, "/"); |
493 | ||
494 | stringbuf_cat (&buf, filename_chars); | |
495 | sans_ext_len = buf.ptr - buf.buf; | |
496 | ||
497 | /* Try every extension. */ | |
d2e53ed6 | 498 | for (exts = extensions; scm_is_pair (exts); exts = SCM_CDR (exts)) |
7d04d68b MV |
499 | { |
500 | SCM ext = SCM_CAR (exts); | |
501 | struct stat mode; | |
502 | ||
503 | buf.ptr = buf.buf + sans_ext_len; | |
504 | stringbuf_cat_locale_string (&buf, ext); | |
505 | ||
506 | /* If the file exists at all, we should return it. If the | |
507 | file is inaccessible, then that's an error. */ | |
508 | ||
7d04d68b MV |
509 | if (stat (buf.buf, &mode) == 0 |
510 | && ! (mode.st_mode & S_IFDIR)) | |
511 | { | |
512 | result = scm_from_locale_string (buf.buf); | |
513 | goto end; | |
514 | } | |
515 | } | |
516 | ||
517 | if (!SCM_NULL_OR_NIL_P (exts)) | |
518 | scm_wrong_type_arg_msg (NULL, 0, extensions, "proper list"); | |
519 | } | |
56384176 | 520 | |
7d04d68b MV |
521 | if (!SCM_NULL_OR_NIL_P (path)) |
522 | scm_wrong_type_arg_msg (NULL, 0, path, "proper list"); | |
56384176 | 523 | |
7d04d68b | 524 | end: |
661ae7ab | 525 | scm_dynwind_end (); |
7d04d68b | 526 | return result; |
06721500 | 527 | } |
1bbd0b84 | 528 | #undef FUNC_NAME |
06721500 JB |
529 | |
530 | ||
04e8fb0a MD |
531 | /* Search %load-path for a directory containing a file named FILENAME. |
532 | The file must be readable, and not a directory. | |
533 | If we find one, return its full filename; otherwise, return #f. | |
534 | If FILENAME is absolute, return it unchanged. */ | |
3b3b36dd | 535 | SCM_DEFINE (scm_sys_search_load_path, "%search-load-path", 1, 0, 0, |
67e8151b MG |
536 | (SCM filename), |
537 | "Search @var{%load-path} for the file named @var{filename},\n" | |
538 | "which must be readable by the current user. If @var{filename}\n" | |
539 | "is found in the list of paths to search or is an absolute\n" | |
540 | "pathname, return its full pathname. Otherwise, return\n" | |
541 | "@code{#f}. Filenames may have any of the optional extensions\n" | |
542 | "in the @code{%load-extensions} list; @code{%search-load-path}\n" | |
543 | "will try each extension automatically.") | |
1bbd0b84 | 544 | #define FUNC_NAME s_scm_sys_search_load_path |
04e8fb0a MD |
545 | { |
546 | SCM path = *scm_loc_load_path; | |
547 | SCM exts = *scm_loc_load_extensions; | |
a6d9e5ab | 548 | SCM_VALIDATE_STRING (1, filename); |
1bbd0b84 | 549 | |
2ade72d7 DH |
550 | if (scm_ilength (path) < 0) |
551 | SCM_MISC_ERROR ("%load-path is not a proper list", SCM_EOL); | |
552 | if (scm_ilength (exts) < 0) | |
553 | SCM_MISC_ERROR ("%load-extension list is not a proper list", SCM_EOL); | |
22f4ee48 | 554 | return scm_search_path (path, filename, exts, SCM_UNDEFINED); |
04e8fb0a | 555 | } |
1bbd0b84 | 556 | #undef FUNC_NAME |
04e8fb0a MD |
557 | |
558 | ||
1d022387 | 559 | static int |
535fb833 | 560 | compiled_is_fresh (SCM full_filename, SCM compiled_filename) |
1d022387 AW |
561 | { |
562 | char *source, *compiled; | |
563 | struct stat stat_source, stat_compiled; | |
564 | int res; | |
565 | ||
566 | source = scm_to_locale_string (full_filename); | |
567 | compiled = scm_to_locale_string (compiled_filename); | |
568 | ||
569 | if (stat (source, &stat_source) == 0 | |
570 | && stat (compiled, &stat_compiled) == 0 | |
535fb833 | 571 | && stat_source.st_mtime == stat_compiled.st_mtime) |
1d022387 AW |
572 | { |
573 | res = 1; | |
574 | } | |
575 | else | |
576 | { | |
577 | scm_puts (";;; note: source file ", scm_current_error_port ()); | |
578 | scm_puts (source, scm_current_error_port ()); | |
6fd367e7 | 579 | scm_puts ("\n;;; newer than compiled ", scm_current_error_port ()); |
1d022387 AW |
580 | scm_puts (compiled, scm_current_error_port ()); |
581 | scm_puts ("\n", scm_current_error_port ()); | |
582 | res = 0; | |
1d022387 | 583 | } |
3c997c4b | 584 | |
1d022387 AW |
585 | free (source); |
586 | free (compiled); | |
587 | return res; | |
588 | } | |
589 | ||
590 | static SCM | |
ee001750 | 591 | do_try_autocompile (void *data) |
1d022387 | 592 | { |
3c997c4b AW |
593 | SCM source = PTR2SCM (data); |
594 | SCM comp_mod, compile_file; | |
ee001750 AW |
595 | |
596 | scm_puts (";;; compiling ", scm_current_error_port ()); | |
3c997c4b | 597 | scm_display (source, scm_current_error_port ()); |
ee001750 AW |
598 | scm_newline (scm_current_error_port ()); |
599 | ||
600 | comp_mod = scm_c_resolve_module ("system base compile"); | |
628132c5 AW |
601 | compile_file = scm_module_variable |
602 | (comp_mod, scm_from_locale_symbol ("compile-file")); | |
ee001750 | 603 | |
3c997c4b AW |
604 | if (scm_is_true (compile_file)) |
605 | { | |
606 | SCM res = scm_call_1 (scm_variable_ref (compile_file), source); | |
607 | scm_puts (";;; compiled ", scm_current_error_port ()); | |
608 | scm_display (res, scm_current_error_port ()); | |
609 | scm_newline (scm_current_error_port ()); | |
610 | return res; | |
611 | } | |
612 | else | |
613 | { | |
614 | scm_puts (";;; it seems ", scm_current_error_port ()); | |
615 | scm_display (source, scm_current_error_port ()); | |
616 | scm_puts ("\n;;; is part of the compiler; skipping autocompilation\n", | |
617 | scm_current_error_port ()); | |
618 | return SCM_BOOL_F; | |
619 | } | |
ee001750 AW |
620 | } |
621 | ||
622 | static SCM | |
623 | autocompile_catch_handler (void *data, SCM tag, SCM throw_args) | |
624 | { | |
3c997c4b | 625 | SCM source = PTR2SCM (data); |
ee001750 | 626 | scm_puts (";;; WARNING: compilation of ", scm_current_error_port ()); |
3c997c4b | 627 | scm_display (source, scm_current_error_port ()); |
6fd367e7 | 628 | scm_puts (" failed:\n", scm_current_error_port ()); |
ee001750 AW |
629 | scm_puts (";;; key ", scm_current_error_port ()); |
630 | scm_write (tag, scm_current_error_port ()); | |
631 | scm_puts (", throw args ", scm_current_error_port ()); | |
632 | scm_write (throw_args, scm_current_error_port ()); | |
633 | scm_newline (scm_current_error_port ()); | |
1d022387 AW |
634 | return SCM_BOOL_F; |
635 | } | |
636 | ||
ee001750 | 637 | static SCM |
3c997c4b | 638 | scm_try_autocompile (SCM source) |
ee001750 AW |
639 | { |
640 | static int message_shown = 0; | |
641 | ||
642 | if (scm_is_false (*scm_loc_load_should_autocompile)) | |
643 | return SCM_BOOL_F; | |
644 | ||
645 | if (!message_shown) | |
646 | { | |
647 | scm_puts (";;; note: autocompilation is enabled, set GUILE_AUTO_COMPILE=0\n" | |
6fd367e7 | 648 | ";;; or pass the --no-autocompile argument to disable.\n", |
ee001750 AW |
649 | scm_current_error_port ()); |
650 | message_shown = 1; | |
651 | } | |
652 | ||
ee001750 AW |
653 | return scm_c_catch (SCM_BOOL_T, |
654 | do_try_autocompile, | |
3c997c4b | 655 | SCM2PTR (source), |
ee001750 | 656 | autocompile_catch_handler, |
3c997c4b | 657 | SCM2PTR (source), |
ee001750 AW |
658 | NULL, NULL); |
659 | } | |
660 | ||
0fb81f95 AW |
661 | SCM_DEFINE (scm_primitive_load_path, "primitive-load-path", 1, 1, 0, |
662 | (SCM filename, SCM exception_on_not_found), | |
67e8151b MG |
663 | "Search @var{%load-path} for the file named @var{filename} and\n" |
664 | "load it into the top-level environment. If @var{filename} is a\n" | |
665 | "relative pathname and is not found in the list of search paths,\n" | |
0fb81f95 AW |
666 | "an error is signalled, unless the optional argument\n" |
667 | "@var{exception_on_not_found} is @code{#f}, in which case\n" | |
668 | "@code{#f} is returned instead.") | |
1bbd0b84 | 669 | #define FUNC_NAME s_scm_primitive_load_path |
06721500 | 670 | { |
22f4ee48 | 671 | SCM full_filename, compiled_filename; |
628132c5 | 672 | int compiled_is_fallback = 0; |
26544b96 | 673 | |
0fb81f95 AW |
674 | if (SCM_UNBNDP (exception_on_not_found)) |
675 | exception_on_not_found = SCM_BOOL_T; | |
676 | ||
26544b96 | 677 | full_filename = scm_sys_search_load_path (filename); |
5b197db8 | 678 | compiled_filename = scm_search_path (*scm_loc_load_compiled_path, |
22f4ee48 AW |
679 | filename, |
680 | *scm_loc_load_compiled_extensions, | |
681 | SCM_BOOL_T); | |
3c997c4b | 682 | |
5ea401bf AW |
683 | if (scm_is_false (compiled_filename) |
684 | && scm_is_true (full_filename) | |
3c997c4b AW |
685 | && scm_is_true (*scm_loc_compile_fallback_path) |
686 | && scm_is_pair (*scm_loc_load_compiled_extensions) | |
687 | && scm_is_string (scm_car (*scm_loc_load_compiled_extensions))) | |
5ea401bf | 688 | { |
3c997c4b AW |
689 | SCM fallback = scm_string_append |
690 | (scm_list_3 (*scm_loc_compile_fallback_path, | |
691 | full_filename, | |
692 | scm_car (*scm_loc_load_compiled_extensions))); | |
693 | if (scm_is_true (scm_stat (fallback, SCM_BOOL_F))) | |
628132c5 AW |
694 | { |
695 | compiled_filename = fallback; | |
696 | compiled_is_fallback = 1; | |
697 | } | |
5ea401bf AW |
698 | } |
699 | ||
22f4ee48 | 700 | if (scm_is_false (full_filename) && scm_is_false (compiled_filename)) |
0fb81f95 AW |
701 | { |
702 | if (scm_is_true (exception_on_not_found)) | |
703 | SCM_MISC_ERROR ("Unable to find file ~S in load path", | |
704 | scm_list_1 (filename)); | |
705 | else | |
706 | return SCM_BOOL_F; | |
707 | } | |
26544b96 | 708 | |
1d022387 AW |
709 | if (scm_is_false (full_filename) |
710 | || (scm_is_true (compiled_filename) | |
535fb833 | 711 | && compiled_is_fresh (full_filename, compiled_filename))) |
22f4ee48 AW |
712 | return scm_load_compiled_with_vm (compiled_filename); |
713 | ||
628132c5 AW |
714 | /* Perhaps there was the installed .go that was stale, but our fallback is |
715 | fresh. Let's try that. Duplicating code, but perhaps that's OK. */ | |
716 | ||
717 | if (!compiled_is_fallback | |
718 | && scm_is_true (*scm_loc_compile_fallback_path) | |
719 | && scm_is_pair (*scm_loc_load_compiled_extensions) | |
720 | && scm_is_string (scm_car (*scm_loc_load_compiled_extensions))) | |
721 | { | |
722 | SCM fallback = scm_string_append | |
723 | (scm_list_3 (*scm_loc_compile_fallback_path, | |
724 | full_filename, | |
725 | scm_car (*scm_loc_load_compiled_extensions))); | |
726 | if (scm_is_true (scm_stat (fallback, SCM_BOOL_F)) | |
535fb833 | 727 | && compiled_is_fresh (full_filename, fallback)) |
628132c5 AW |
728 | { |
729 | scm_puts (";;; found fresh local cache at ", scm_current_error_port ()); | |
730 | scm_display (fallback, scm_current_error_port ()); | |
731 | scm_newline (scm_current_error_port ()); | |
732 | return scm_load_compiled_with_vm (compiled_filename); | |
733 | } | |
3c997c4b | 734 | } |
628132c5 AW |
735 | |
736 | /* Otherwise, we bottom out here. */ | |
737 | { | |
738 | SCM freshly_compiled = scm_try_autocompile (full_filename); | |
739 | ||
740 | if (scm_is_true (freshly_compiled)) | |
741 | return scm_load_compiled_with_vm (freshly_compiled); | |
742 | else | |
743 | return scm_primitive_load (full_filename); | |
744 | } | |
06721500 | 745 | } |
1bbd0b84 | 746 | #undef FUNC_NAME |
06721500 | 747 | |
c519b272 MV |
748 | SCM |
749 | scm_c_primitive_load_path (const char *filename) | |
750 | { | |
0fb81f95 AW |
751 | return scm_primitive_load_path (scm_from_locale_string (filename), |
752 | SCM_BOOL_T); | |
c519b272 MV |
753 | } |
754 | ||
06721500 | 755 | \f |
e151bee6 | 756 | /* Information about the build environment. */ |
06721500 | 757 | |
e151bee6 JB |
758 | /* Initialize the scheme variable %guile-build-info, based on data |
759 | provided by the Makefile, via libpath.h. */ | |
760 | static void | |
761 | init_build_info () | |
762 | { | |
763 | static struct { char *name; char *value; } info[] = SCM_BUILD_INFO; | |
86d31dfe | 764 | SCM *loc = SCM_VARIABLE_LOC (scm_c_define ("%guile-build-info", SCM_EOL)); |
c014a02e | 765 | unsigned long i; |
e151bee6 JB |
766 | |
767 | for (i = 0; i < (sizeof (info) / sizeof (info[0])); i++) | |
cc95e00a MV |
768 | { |
769 | SCM key = scm_from_locale_symbol (info[i].name); | |
770 | SCM val = scm_from_locale_string (info[i].value); | |
771 | *loc = scm_acons (key, val, *loc); | |
772 | } | |
e151bee6 JB |
773 | } |
774 | ||
e151bee6 | 775 | \f |
0f2d19dd JB |
776 | void |
777 | scm_init_load () | |
0f2d19dd | 778 | { |
1afff620 | 779 | scm_listofnullstr = scm_permanent_object (scm_list_1 (scm_nullstr)); |
86d31dfe | 780 | scm_loc_load_path = SCM_VARIABLE_LOC (scm_c_define ("%load-path", SCM_EOL)); |
26544b96 | 781 | scm_loc_load_extensions |
86d31dfe | 782 | = SCM_VARIABLE_LOC (scm_c_define ("%load-extensions", |
cc95e00a MV |
783 | scm_list_2 (scm_from_locale_string (".scm"), |
784 | scm_nullstr))); | |
5b197db8 AW |
785 | scm_loc_load_compiled_path |
786 | = SCM_VARIABLE_LOC (scm_c_define ("%load-compiled-path", SCM_EOL)); | |
22f4ee48 AW |
787 | scm_loc_load_compiled_extensions |
788 | = SCM_VARIABLE_LOC (scm_c_define ("%load-compiled-extensions", | |
789 | scm_list_1 (scm_from_locale_string (".go")))); | |
86d31dfe | 790 | scm_loc_load_hook = SCM_VARIABLE_LOC (scm_c_define ("%load-hook", SCM_BOOL_F)); |
06721500 | 791 | |
5ea401bf AW |
792 | scm_loc_compile_fallback_path |
793 | = SCM_VARIABLE_LOC (scm_c_define ("%compile-fallback-path", SCM_BOOL_F)); | |
794 | ||
ee001750 AW |
795 | scm_loc_load_should_autocompile |
796 | = SCM_VARIABLE_LOC (scm_c_define ("%load-should-autocompile", SCM_BOOL_F)); | |
797 | ||
ec3a8ace NJ |
798 | the_reader = scm_make_fluid (); |
799 | the_reader_fluid_num = SCM_FLUID_NUM (the_reader); | |
800 | SCM_FAST_FLUID_SET_X (the_reader_fluid_num, SCM_BOOL_F); | |
801 | scm_c_define("current-reader", the_reader); | |
802 | ||
e151bee6 JB |
803 | init_build_info (); |
804 | ||
a0599745 | 805 | #include "libguile/load.x" |
0f2d19dd | 806 | } |
89e00824 ML |
807 | |
808 | /* | |
809 | Local Variables: | |
810 | c-file-style: "gnu" | |
811 | End: | |
812 | */ |