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 | ||
ee001750 AW |
185 | /* Whether we should try to auto-compile. */ |
186 | static SCM *scm_loc_load_should_autocompile; | |
01cddfc1 | 187 | |
5ea401bf AW |
188 | /* The fallback path for autocompilation */ |
189 | static SCM *scm_loc_compile_fallback_path; | |
190 | ||
a1ec6916 | 191 | SCM_DEFINE (scm_parse_path, "parse-path", 1, 1, 0, |
1bbd0b84 | 192 | (SCM path, SCM tail), |
d91788cb MG |
193 | "Parse @var{path}, which is expected to be a colon-separated\n" |
194 | "string, into a list and return the resulting list with\n" | |
195 | "@var{tail} appended. If @var{path} is @code{#f}, @var{tail}\n" | |
196 | "is returned.") | |
1bbd0b84 | 197 | #define FUNC_NAME s_scm_parse_path |
04e8fb0a | 198 | { |
7d04d68b MV |
199 | #ifdef __MINGW32__ |
200 | SCM sep = SCM_MAKE_CHAR (';'); | |
201 | #else | |
202 | SCM sep = SCM_MAKE_CHAR (':'); | |
203 | #endif | |
204 | ||
04e8fb0a MD |
205 | if (SCM_UNBNDP (tail)) |
206 | tail = SCM_EOL; | |
7888309b | 207 | return (scm_is_false (path) |
04e8fb0a | 208 | ? tail |
7d04d68b | 209 | : scm_append_x (scm_list_2 (scm_string_split (path, sep), tail))); |
04e8fb0a | 210 | } |
1bbd0b84 | 211 | #undef FUNC_NAME |
04e8fb0a MD |
212 | |
213 | ||
06721500 | 214 | /* Initialize the global variable %load-path, given the value of the |
3feedb00 | 215 | SCM_SITE_DIR and SCM_LIBRARY_DIR preprocessor symbols and the |
01cddfc1 | 216 | GUILE_LOAD_PATH environment variable. */ |
0f2d19dd | 217 | void |
06721500 JB |
218 | scm_init_load_path () |
219 | { | |
11c5e0bf | 220 | char *env; |
06721500 | 221 | SCM path = SCM_EOL; |
5b197db8 | 222 | SCM cpath = SCM_EOL; |
06721500 | 223 | |
3feedb00 | 224 | #ifdef SCM_LIBRARY_DIR |
02b84691 AW |
225 | env = getenv ("GUILE_SYSTEM_PATH"); |
226 | if (env && strcmp (env, "") == 0) | |
227 | /* special-case interpret system-path=="" as meaning no system path instead | |
228 | of '("") */ | |
229 | ; | |
230 | else if (env) | |
231 | path = scm_parse_path (scm_from_locale_string (env), path); | |
232 | else | |
233 | path = scm_list_3 (scm_from_locale_string (SCM_SITE_DIR), | |
234 | scm_from_locale_string (SCM_LIBRARY_DIR), | |
235 | scm_from_locale_string (SCM_PKGDATA_DIR)); | |
5b197db8 AW |
236 | |
237 | env = getenv ("GUILE_SYSTEM_COMPILED_PATH"); | |
238 | if (env && strcmp (env, "") == 0) | |
239 | /* like above */ | |
240 | ; | |
241 | else if (env) | |
242 | cpath = scm_parse_path (scm_from_locale_string (env), cpath); | |
243 | else | |
3c997c4b AW |
244 | cpath = scm_cons (scm_from_locale_string (SCM_CCACHE_DIR), cpath); |
245 | ||
246 | #endif /* SCM_LIBRARY_DIR */ | |
247 | ||
248 | { | |
249 | char *home; | |
5b197db8 | 250 | |
3c997c4b | 251 | home = getenv ("HOME"); |
5b197db8 | 252 | #ifdef HAVE_GETPWENT |
3c997c4b AW |
253 | if (!home) |
254 | { | |
255 | struct passwd *pwd; | |
256 | pwd = getpwuid (getuid ()); | |
257 | if (pwd) | |
258 | home = pwd->pw_dir; | |
259 | } | |
5b197db8 | 260 | #endif /* HAVE_GETPWENT */ |
3c997c4b AW |
261 | if (home) |
262 | { char buf[1024]; | |
263 | snprintf (buf, sizeof(buf), | |
264 | "%s/.guile-ccache/" SCM_EFFECTIVE_VERSION, home); | |
265 | *scm_loc_compile_fallback_path = scm_from_locale_string (buf); | |
266 | } | |
267 | } | |
06721500 | 268 | |
11c5e0bf MV |
269 | env = getenv ("GUILE_LOAD_PATH"); |
270 | if (env) | |
271 | path = scm_parse_path (scm_from_locale_string (env), path); | |
01cddfc1 | 272 | |
5b197db8 AW |
273 | env = getenv ("GUILE_LOAD_COMPILED_PATH"); |
274 | if (env) | |
275 | cpath = scm_parse_path (scm_from_locale_string (env), cpath); | |
276 | ||
06721500 | 277 | *scm_loc_load_path = path; |
5b197db8 | 278 | *scm_loc_load_compiled_path = cpath; |
06721500 JB |
279 | } |
280 | ||
04e8fb0a | 281 | SCM scm_listofnullstr; |
06721500 | 282 | |
7d04d68b MV |
283 | /* Utility functions for assembling C strings in a buffer. |
284 | */ | |
285 | ||
286 | struct stringbuf { | |
287 | char *buf, *ptr; | |
288 | size_t buf_len; | |
289 | }; | |
290 | ||
291 | static void | |
292 | stringbuf_free (void *data) | |
293 | { | |
294 | struct stringbuf *buf = (struct stringbuf *)data; | |
295 | free (buf->buf); | |
296 | } | |
297 | ||
298 | static void | |
299 | stringbuf_grow (struct stringbuf *buf) | |
300 | { | |
301 | size_t ptroff = buf->ptr - buf->buf; | |
302 | buf->buf_len *= 2; | |
7d04d68b MV |
303 | buf->buf = scm_realloc (buf->buf, buf->buf_len); |
304 | buf->ptr = buf->buf + ptroff; | |
305 | } | |
306 | ||
307 | static void | |
308 | stringbuf_cat_locale_string (struct stringbuf *buf, SCM str) | |
309 | { | |
310 | size_t max_len = buf->buf_len - (buf->ptr - buf->buf) - 1; | |
311 | size_t len = scm_to_locale_stringbuf (str, buf->ptr, max_len); | |
312 | if (len > max_len) | |
313 | { | |
314 | /* buffer is too small, double its size and try again. | |
315 | */ | |
316 | stringbuf_grow (buf); | |
317 | stringbuf_cat_locale_string (buf, str); | |
318 | } | |
319 | else | |
320 | { | |
321 | /* string fits, terminate it and check for embedded '\0'. | |
322 | */ | |
323 | buf->ptr[len] = '\0'; | |
324 | if (strlen (buf->ptr) != len) | |
325 | scm_misc_error (NULL, | |
326 | "string contains #\\nul character: ~S", | |
327 | scm_list_1 (str)); | |
328 | buf->ptr += len; | |
329 | } | |
330 | } | |
331 | ||
332 | static void | |
333 | stringbuf_cat (struct stringbuf *buf, char *str) | |
334 | { | |
335 | size_t max_len = buf->buf_len - (buf->ptr - buf->buf) - 1; | |
336 | size_t len = strlen (str); | |
337 | if (len > max_len) | |
338 | { | |
339 | /* buffer is too small, double its size and try again. | |
340 | */ | |
341 | stringbuf_grow (buf); | |
342 | stringbuf_cat (buf, str); | |
343 | } | |
344 | else | |
345 | { | |
346 | /* string fits, copy it into buffer. | |
347 | */ | |
348 | strcpy (buf->ptr, str); | |
349 | buf->ptr += len; | |
350 | } | |
351 | } | |
352 | ||
353 | ||
22f4ee48 AW |
354 | static int |
355 | scm_c_string_has_an_ext (char *str, size_t len, SCM extensions) | |
356 | { | |
357 | for (; !scm_is_null (extensions); extensions = SCM_CDR (extensions)) | |
358 | { | |
359 | char *ext; | |
360 | size_t extlen; | |
361 | int match; | |
362 | ext = scm_to_locale_string (SCM_CAR (extensions)); | |
363 | extlen = strlen (ext); | |
364 | match = (len > extlen && str[len - extlen - 1] == '.' | |
365 | && strncmp (str + (len - extlen), ext, extlen) == 0); | |
366 | free (ext); | |
367 | if (match) | |
368 | return 1; | |
369 | } | |
370 | return 0; | |
371 | } | |
372 | ||
04e8fb0a | 373 | /* Search PATH for a directory containing a file named FILENAME. |
06721500 | 374 | The file must be readable, and not a directory. |
26544b96 | 375 | If we find one, return its full filename; otherwise, return #f. |
56384176 JB |
376 | If FILENAME is absolute, return it unchanged. |
377 | If given, EXTENSIONS is a list of strings; for each directory | |
378 | in PATH, we search for FILENAME concatenated with each EXTENSION. */ | |
22f4ee48 AW |
379 | SCM_DEFINE (scm_search_path, "search-path", 2, 2, 0, |
380 | (SCM path, SCM filename, SCM extensions, SCM require_exts), | |
d91788cb MG |
381 | "Search @var{path} for a directory containing a file named\n" |
382 | "@var{filename}. The file must be readable, and not a directory.\n" | |
383 | "If we find one, return its full filename; otherwise, return\n" | |
384 | "@code{#f}. If @var{filename} is absolute, return it unchanged.\n" | |
385 | "If given, @var{extensions} is a list of strings; for each\n" | |
386 | "directory in @var{path}, we search for @var{filename}\n" | |
387 | "concatenated with each @var{extension}.") | |
1bbd0b84 | 388 | #define FUNC_NAME s_scm_search_path |
06721500 | 389 | { |
7d04d68b | 390 | struct stringbuf buf; |
56384176 | 391 | char *filename_chars; |
7d04d68b MV |
392 | size_t filename_len; |
393 | SCM result = SCM_BOOL_F; | |
06721500 | 394 | |
04e8fb0a | 395 | if (SCM_UNBNDP (extensions)) |
56384176 | 396 | extensions = SCM_EOL; |
56384176 | 397 | |
22f4ee48 AW |
398 | if (SCM_UNBNDP (require_exts)) |
399 | require_exts = SCM_BOOL_F; | |
400 | ||
661ae7ab | 401 | scm_dynwind_begin (0); |
7d04d68b MV |
402 | |
403 | filename_chars = scm_to_locale_string (filename); | |
404 | filename_len = strlen (filename_chars); | |
661ae7ab | 405 | scm_dynwind_free (filename_chars); |
06721500 | 406 | |
26544b96 | 407 | /* If FILENAME is absolute, return it unchanged. */ |
2e945bcc SJ |
408 | #ifdef __MINGW32__ |
409 | if (((filename_len >= 1) && | |
410 | (filename_chars[0] == '/' || filename_chars[0] == '\\')) || | |
411 | ((filename_len >= 3) && filename_chars[1] == ':' && | |
412 | ((filename_chars[0] >= 'a' && filename_chars[0] <= 'z') || | |
413 | (filename_chars[0] >= 'A' && filename_chars[0] <= 'Z')) && | |
414 | (filename_chars[2] == '/' || filename_chars[2] == '\\'))) | |
415 | #else | |
56384176 | 416 | if (filename_len >= 1 && filename_chars[0] == '/') |
2e945bcc | 417 | #endif |
7d04d68b | 418 | { |
22f4ee48 AW |
419 | SCM res = filename; |
420 | if (scm_is_true (require_exts) && | |
421 | !scm_c_string_has_an_ext (filename_chars, filename_len, | |
422 | extensions)) | |
423 | res = SCM_BOOL_F; | |
424 | ||
661ae7ab | 425 | scm_dynwind_end (); |
22f4ee48 | 426 | return res; |
7d04d68b | 427 | } |
26544b96 | 428 | |
56384176 JB |
429 | /* If FILENAME has an extension, don't try to add EXTENSIONS to it. */ |
430 | { | |
431 | char *endp; | |
432 | ||
433 | for (endp = filename_chars + filename_len - 1; | |
434 | endp >= filename_chars; | |
435 | endp--) | |
436 | { | |
437 | if (*endp == '.') | |
438 | { | |
22f4ee48 AW |
439 | if (scm_is_true (require_exts) && |
440 | !scm_c_string_has_an_ext (filename_chars, filename_len, | |
441 | extensions)) | |
442 | { | |
443 | /* This filename has an extension, but not one of the right | |
444 | ones... */ | |
445 | scm_dynwind_end (); | |
446 | return SCM_BOOL_F; | |
447 | } | |
56384176 JB |
448 | /* This filename already has an extension, so cancel the |
449 | list of extensions. */ | |
450 | extensions = SCM_EOL; | |
451 | break; | |
452 | } | |
2e945bcc SJ |
453 | #ifdef __MINGW32__ |
454 | else if (*endp == '/' || *endp == '\\') | |
455 | #else | |
56384176 | 456 | else if (*endp == '/') |
2e945bcc | 457 | #endif |
56384176 JB |
458 | /* This filename has no extension, so keep the current list |
459 | of extensions. */ | |
460 | break; | |
461 | } | |
462 | } | |
463 | ||
7d04d68b MV |
464 | /* This simplifies the loop below a bit. |
465 | */ | |
d2e53ed6 | 466 | if (scm_is_null (extensions)) |
7d04d68b | 467 | extensions = scm_listofnullstr; |
06721500 | 468 | |
7d04d68b MV |
469 | buf.buf_len = 512; |
470 | buf.buf = scm_malloc (buf.buf_len); | |
661ae7ab | 471 | scm_dynwind_unwind_handler (stringbuf_free, &buf, SCM_F_WIND_EXPLICITLY); |
0a74e31d | 472 | |
7d04d68b MV |
473 | /* Try every path element. |
474 | */ | |
d2e53ed6 | 475 | for (; scm_is_pair (path); path = SCM_CDR (path)) |
7d04d68b MV |
476 | { |
477 | SCM dir = SCM_CAR (path); | |
478 | SCM exts; | |
479 | size_t sans_ext_len; | |
480 | ||
481 | buf.ptr = buf.buf; | |
482 | stringbuf_cat_locale_string (&buf, dir); | |
483 | ||
484 | /* Concatenate the path name and the filename. */ | |
485 | ||
2e945bcc | 486 | #ifdef __MINGW32__ |
5a6d139b | 487 | if ((buf.ptr > buf.buf) && (buf.ptr[-1] != '/') && (buf.ptr[-1] != '\\')) |
2e945bcc | 488 | #else |
5a6d139b | 489 | if ((buf.ptr > buf.buf) && (buf.ptr[-1] != '/')) |
2e945bcc | 490 | #endif |
7d04d68b MV |
491 | stringbuf_cat (&buf, "/"); |
492 | ||
493 | stringbuf_cat (&buf, filename_chars); | |
494 | sans_ext_len = buf.ptr - buf.buf; | |
495 | ||
496 | /* Try every extension. */ | |
d2e53ed6 | 497 | for (exts = extensions; scm_is_pair (exts); exts = SCM_CDR (exts)) |
7d04d68b MV |
498 | { |
499 | SCM ext = SCM_CAR (exts); | |
500 | struct stat mode; | |
501 | ||
502 | buf.ptr = buf.buf + sans_ext_len; | |
503 | stringbuf_cat_locale_string (&buf, ext); | |
504 | ||
505 | /* If the file exists at all, we should return it. If the | |
506 | file is inaccessible, then that's an error. */ | |
507 | ||
7d04d68b MV |
508 | if (stat (buf.buf, &mode) == 0 |
509 | && ! (mode.st_mode & S_IFDIR)) | |
510 | { | |
511 | result = scm_from_locale_string (buf.buf); | |
512 | goto end; | |
513 | } | |
514 | } | |
515 | ||
516 | if (!SCM_NULL_OR_NIL_P (exts)) | |
517 | scm_wrong_type_arg_msg (NULL, 0, extensions, "proper list"); | |
518 | } | |
56384176 | 519 | |
7d04d68b MV |
520 | if (!SCM_NULL_OR_NIL_P (path)) |
521 | scm_wrong_type_arg_msg (NULL, 0, path, "proper list"); | |
56384176 | 522 | |
7d04d68b | 523 | end: |
661ae7ab | 524 | scm_dynwind_end (); |
7d04d68b | 525 | return result; |
06721500 | 526 | } |
1bbd0b84 | 527 | #undef FUNC_NAME |
06721500 JB |
528 | |
529 | ||
04e8fb0a MD |
530 | /* Search %load-path for a directory containing a file named FILENAME. |
531 | The file must be readable, and not a directory. | |
532 | If we find one, return its full filename; otherwise, return #f. | |
533 | If FILENAME is absolute, return it unchanged. */ | |
3b3b36dd | 534 | SCM_DEFINE (scm_sys_search_load_path, "%search-load-path", 1, 0, 0, |
67e8151b MG |
535 | (SCM filename), |
536 | "Search @var{%load-path} for the file named @var{filename},\n" | |
537 | "which must be readable by the current user. If @var{filename}\n" | |
538 | "is found in the list of paths to search or is an absolute\n" | |
539 | "pathname, return its full pathname. Otherwise, return\n" | |
540 | "@code{#f}. Filenames may have any of the optional extensions\n" | |
541 | "in the @code{%load-extensions} list; @code{%search-load-path}\n" | |
542 | "will try each extension automatically.") | |
1bbd0b84 | 543 | #define FUNC_NAME s_scm_sys_search_load_path |
04e8fb0a MD |
544 | { |
545 | SCM path = *scm_loc_load_path; | |
546 | SCM exts = *scm_loc_load_extensions; | |
a6d9e5ab | 547 | SCM_VALIDATE_STRING (1, filename); |
1bbd0b84 | 548 | |
2ade72d7 DH |
549 | if (scm_ilength (path) < 0) |
550 | SCM_MISC_ERROR ("%load-path is not a proper list", SCM_EOL); | |
551 | if (scm_ilength (exts) < 0) | |
552 | SCM_MISC_ERROR ("%load-extension list is not a proper list", SCM_EOL); | |
22f4ee48 | 553 | return scm_search_path (path, filename, exts, SCM_UNDEFINED); |
04e8fb0a | 554 | } |
1bbd0b84 | 555 | #undef FUNC_NAME |
04e8fb0a MD |
556 | |
557 | ||
1d022387 AW |
558 | static int |
559 | compiled_is_newer (SCM full_filename, SCM compiled_filename) | |
560 | { | |
561 | char *source, *compiled; | |
562 | struct stat stat_source, stat_compiled; | |
563 | int res; | |
564 | ||
565 | source = scm_to_locale_string (full_filename); | |
566 | compiled = scm_to_locale_string (compiled_filename); | |
567 | ||
568 | if (stat (source, &stat_source) == 0 | |
569 | && stat (compiled, &stat_compiled) == 0 | |
570 | && stat_source.st_mtime <= stat_compiled.st_mtime) | |
571 | { | |
572 | res = 1; | |
573 | } | |
574 | else | |
575 | { | |
576 | scm_puts (";;; note: source file ", scm_current_error_port ()); | |
577 | scm_puts (source, scm_current_error_port ()); | |
6fd367e7 | 578 | scm_puts ("\n;;; newer than compiled ", scm_current_error_port ()); |
1d022387 AW |
579 | scm_puts (compiled, scm_current_error_port ()); |
580 | scm_puts ("\n", scm_current_error_port ()); | |
581 | res = 0; | |
1d022387 | 582 | } |
3c997c4b | 583 | |
1d022387 AW |
584 | free (source); |
585 | free (compiled); | |
586 | return res; | |
587 | } | |
588 | ||
589 | static SCM | |
ee001750 | 590 | do_try_autocompile (void *data) |
1d022387 | 591 | { |
3c997c4b AW |
592 | SCM source = PTR2SCM (data); |
593 | SCM comp_mod, compile_file; | |
ee001750 AW |
594 | |
595 | scm_puts (";;; compiling ", scm_current_error_port ()); | |
3c997c4b | 596 | scm_display (source, scm_current_error_port ()); |
ee001750 AW |
597 | scm_newline (scm_current_error_port ()); |
598 | ||
599 | comp_mod = scm_c_resolve_module ("system base compile"); | |
600 | compile_file = scm_c_module_lookup (comp_mod, "compile-file"); | |
ee001750 | 601 | |
3c997c4b AW |
602 | if (scm_is_true (compile_file)) |
603 | { | |
604 | SCM res = scm_call_1 (scm_variable_ref (compile_file), source); | |
605 | scm_puts (";;; compiled ", scm_current_error_port ()); | |
606 | scm_display (res, scm_current_error_port ()); | |
607 | scm_newline (scm_current_error_port ()); | |
608 | return res; | |
609 | } | |
610 | else | |
611 | { | |
612 | scm_puts (";;; it seems ", scm_current_error_port ()); | |
613 | scm_display (source, scm_current_error_port ()); | |
614 | scm_puts ("\n;;; is part of the compiler; skipping autocompilation\n", | |
615 | scm_current_error_port ()); | |
616 | return SCM_BOOL_F; | |
617 | } | |
ee001750 AW |
618 | } |
619 | ||
620 | static SCM | |
621 | autocompile_catch_handler (void *data, SCM tag, SCM throw_args) | |
622 | { | |
3c997c4b | 623 | SCM source = PTR2SCM (data); |
ee001750 | 624 | scm_puts (";;; WARNING: compilation of ", scm_current_error_port ()); |
3c997c4b | 625 | scm_display (source, scm_current_error_port ()); |
6fd367e7 | 626 | scm_puts (" failed:\n", scm_current_error_port ()); |
ee001750 AW |
627 | scm_puts (";;; key ", scm_current_error_port ()); |
628 | scm_write (tag, scm_current_error_port ()); | |
629 | scm_puts (", throw args ", scm_current_error_port ()); | |
630 | scm_write (throw_args, scm_current_error_port ()); | |
631 | scm_newline (scm_current_error_port ()); | |
1d022387 AW |
632 | return SCM_BOOL_F; |
633 | } | |
634 | ||
ee001750 | 635 | static SCM |
3c997c4b | 636 | scm_try_autocompile (SCM source) |
ee001750 AW |
637 | { |
638 | static int message_shown = 0; | |
639 | ||
640 | if (scm_is_false (*scm_loc_load_should_autocompile)) | |
641 | return SCM_BOOL_F; | |
642 | ||
643 | if (!message_shown) | |
644 | { | |
645 | scm_puts (";;; note: autocompilation is enabled, set GUILE_AUTO_COMPILE=0\n" | |
6fd367e7 | 646 | ";;; or pass the --no-autocompile argument to disable.\n", |
ee001750 AW |
647 | scm_current_error_port ()); |
648 | message_shown = 1; | |
649 | } | |
650 | ||
ee001750 AW |
651 | return scm_c_catch (SCM_BOOL_T, |
652 | do_try_autocompile, | |
3c997c4b | 653 | SCM2PTR (source), |
ee001750 | 654 | autocompile_catch_handler, |
3c997c4b | 655 | SCM2PTR (source), |
ee001750 AW |
656 | NULL, NULL); |
657 | } | |
658 | ||
0fb81f95 AW |
659 | SCM_DEFINE (scm_primitive_load_path, "primitive-load-path", 1, 1, 0, |
660 | (SCM filename, SCM exception_on_not_found), | |
67e8151b MG |
661 | "Search @var{%load-path} for the file named @var{filename} and\n" |
662 | "load it into the top-level environment. If @var{filename} is a\n" | |
663 | "relative pathname and is not found in the list of search paths,\n" | |
0fb81f95 AW |
664 | "an error is signalled, unless the optional argument\n" |
665 | "@var{exception_on_not_found} is @code{#f}, in which case\n" | |
666 | "@code{#f} is returned instead.") | |
1bbd0b84 | 667 | #define FUNC_NAME s_scm_primitive_load_path |
06721500 | 668 | { |
22f4ee48 | 669 | SCM full_filename, compiled_filename; |
26544b96 | 670 | |
0fb81f95 AW |
671 | if (SCM_UNBNDP (exception_on_not_found)) |
672 | exception_on_not_found = SCM_BOOL_T; | |
673 | ||
26544b96 | 674 | full_filename = scm_sys_search_load_path (filename); |
5b197db8 | 675 | compiled_filename = scm_search_path (*scm_loc_load_compiled_path, |
22f4ee48 AW |
676 | filename, |
677 | *scm_loc_load_compiled_extensions, | |
678 | SCM_BOOL_T); | |
3c997c4b | 679 | |
5ea401bf AW |
680 | if (scm_is_false (compiled_filename) |
681 | && scm_is_true (full_filename) | |
3c997c4b AW |
682 | && scm_is_true (*scm_loc_compile_fallback_path) |
683 | && scm_is_pair (*scm_loc_load_compiled_extensions) | |
684 | && scm_is_string (scm_car (*scm_loc_load_compiled_extensions))) | |
5ea401bf | 685 | { |
3c997c4b AW |
686 | SCM fallback = scm_string_append |
687 | (scm_list_3 (*scm_loc_compile_fallback_path, | |
688 | full_filename, | |
689 | scm_car (*scm_loc_load_compiled_extensions))); | |
690 | if (scm_is_true (scm_stat (fallback, SCM_BOOL_F))) | |
691 | compiled_filename = fallback; | |
5ea401bf AW |
692 | } |
693 | ||
22f4ee48 | 694 | if (scm_is_false (full_filename) && scm_is_false (compiled_filename)) |
0fb81f95 AW |
695 | { |
696 | if (scm_is_true (exception_on_not_found)) | |
697 | SCM_MISC_ERROR ("Unable to find file ~S in load path", | |
698 | scm_list_1 (filename)); | |
699 | else | |
700 | return SCM_BOOL_F; | |
701 | } | |
26544b96 | 702 | |
1d022387 AW |
703 | if (scm_is_false (full_filename) |
704 | || (scm_is_true (compiled_filename) | |
705 | && compiled_is_newer (full_filename, compiled_filename))) | |
22f4ee48 | 706 | return scm_load_compiled_with_vm (compiled_filename); |
3c997c4b AW |
707 | else |
708 | { | |
709 | SCM freshly_compiled = scm_try_autocompile (full_filename); | |
22f4ee48 | 710 | |
3c997c4b AW |
711 | if (scm_is_true (freshly_compiled)) |
712 | return scm_load_compiled_with_vm (freshly_compiled); | |
713 | else | |
714 | return scm_primitive_load (full_filename); | |
715 | } | |
06721500 | 716 | } |
1bbd0b84 | 717 | #undef FUNC_NAME |
06721500 | 718 | |
c519b272 MV |
719 | SCM |
720 | scm_c_primitive_load_path (const char *filename) | |
721 | { | |
0fb81f95 AW |
722 | return scm_primitive_load_path (scm_from_locale_string (filename), |
723 | SCM_BOOL_T); | |
c519b272 MV |
724 | } |
725 | ||
06721500 | 726 | \f |
e151bee6 | 727 | /* Information about the build environment. */ |
06721500 | 728 | |
e151bee6 JB |
729 | /* Initialize the scheme variable %guile-build-info, based on data |
730 | provided by the Makefile, via libpath.h. */ | |
731 | static void | |
732 | init_build_info () | |
733 | { | |
734 | static struct { char *name; char *value; } info[] = SCM_BUILD_INFO; | |
86d31dfe | 735 | SCM *loc = SCM_VARIABLE_LOC (scm_c_define ("%guile-build-info", SCM_EOL)); |
c014a02e | 736 | unsigned long i; |
e151bee6 JB |
737 | |
738 | for (i = 0; i < (sizeof (info) / sizeof (info[0])); i++) | |
cc95e00a MV |
739 | { |
740 | SCM key = scm_from_locale_symbol (info[i].name); | |
741 | SCM val = scm_from_locale_string (info[i].value); | |
742 | *loc = scm_acons (key, val, *loc); | |
743 | } | |
e151bee6 JB |
744 | } |
745 | ||
e151bee6 | 746 | \f |
0f2d19dd JB |
747 | void |
748 | scm_init_load () | |
0f2d19dd | 749 | { |
1afff620 | 750 | scm_listofnullstr = scm_permanent_object (scm_list_1 (scm_nullstr)); |
86d31dfe | 751 | scm_loc_load_path = SCM_VARIABLE_LOC (scm_c_define ("%load-path", SCM_EOL)); |
26544b96 | 752 | scm_loc_load_extensions |
86d31dfe | 753 | = SCM_VARIABLE_LOC (scm_c_define ("%load-extensions", |
cc95e00a MV |
754 | scm_list_2 (scm_from_locale_string (".scm"), |
755 | scm_nullstr))); | |
5b197db8 AW |
756 | scm_loc_load_compiled_path |
757 | = SCM_VARIABLE_LOC (scm_c_define ("%load-compiled-path", SCM_EOL)); | |
22f4ee48 AW |
758 | scm_loc_load_compiled_extensions |
759 | = SCM_VARIABLE_LOC (scm_c_define ("%load-compiled-extensions", | |
760 | scm_list_1 (scm_from_locale_string (".go")))); | |
86d31dfe | 761 | scm_loc_load_hook = SCM_VARIABLE_LOC (scm_c_define ("%load-hook", SCM_BOOL_F)); |
06721500 | 762 | |
5ea401bf AW |
763 | scm_loc_compile_fallback_path |
764 | = SCM_VARIABLE_LOC (scm_c_define ("%compile-fallback-path", SCM_BOOL_F)); | |
765 | ||
ee001750 AW |
766 | scm_loc_load_should_autocompile |
767 | = SCM_VARIABLE_LOC (scm_c_define ("%load-should-autocompile", SCM_BOOL_F)); | |
768 | ||
ec3a8ace NJ |
769 | the_reader = scm_make_fluid (); |
770 | the_reader_fluid_num = SCM_FLUID_NUM (the_reader); | |
771 | SCM_FAST_FLUID_SET_X (the_reader_fluid_num, SCM_BOOL_F); | |
772 | scm_c_define("current-reader", the_reader); | |
773 | ||
e151bee6 JB |
774 | init_build_info (); |
775 | ||
a0599745 | 776 | #include "libguile/load.x" |
0f2d19dd | 777 | } |
89e00824 ML |
778 | |
779 | /* | |
780 | Local Variables: | |
781 | c-file-style: "gnu" | |
782 | End: | |
783 | */ |