Commit | Line | Data |
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fbb857a4 | 1 | /* Copyright (C) 1995,1996,1998,1999,2000,2001, 2004, 2006, 2008, 2009 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; | |
8b039053 | 74 | |
ec3a8ace | 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; |
889975e5 | 88 | char *encoding; |
a6d9e5ab | 89 | SCM_VALIDATE_STRING (1, filename); |
bc36d050 | 90 | if (scm_is_true (hook) && scm_is_false (scm_procedure_p (hook))) |
2ade72d7 DH |
91 | SCM_MISC_ERROR ("value of %load-hook is neither a procedure nor #f", |
92 | SCM_EOL); | |
26544b96 | 93 | |
bc36d050 | 94 | if (!scm_is_false (hook)) |
fdc28395 | 95 | scm_call_1 (hook, filename); |
26544b96 | 96 | |
1bbd0b84 | 97 | { /* scope */ |
b5623573 | 98 | SCM port = scm_open_file (filename, scm_from_locale_string ("r")); |
661ae7ab MV |
99 | scm_dynwind_begin (SCM_F_DYNWIND_REWINDABLE); |
100 | scm_i_dynwind_current_load_port (port); | |
f8a1c9a8 LC |
101 | |
102 | encoding = scm_i_scan_for_encoding (port); | |
889975e5 | 103 | if (encoding) |
f8a1c9a8 | 104 | scm_i_set_port_encoding_x (port, encoding); |
889975e5 | 105 | else |
f8a1c9a8 | 106 | /* The file has no encoding declared. We'll presume Latin-1. */ |
889975e5 | 107 | scm_i_set_port_encoding_x (port, NULL); |
f8a1c9a8 | 108 | |
b5623573 MV |
109 | while (1) |
110 | { | |
ec3a8ace NJ |
111 | SCM reader, form; |
112 | ||
113 | /* Lookup and use the current reader to read the next | |
114 | expression. */ | |
8b039053 | 115 | reader = scm_fluid_ref (the_reader); |
ec3a8ace NJ |
116 | if (reader == SCM_BOOL_F) |
117 | form = scm_read (port); | |
118 | else | |
119 | form = scm_call_1 (reader, port); | |
120 | ||
b5623573 MV |
121 | if (SCM_EOF_OBJECT_P (form)) |
122 | break; | |
ec3a8ace | 123 | |
b5623573 MV |
124 | scm_primitive_eval_x (form); |
125 | } | |
126 | ||
661ae7ab | 127 | scm_dynwind_end (); |
0f2d19dd JB |
128 | scm_close_port (port); |
129 | } | |
b59b97ba | 130 | return SCM_UNSPECIFIED; |
0f2d19dd | 131 | } |
1bbd0b84 | 132 | #undef FUNC_NAME |
0f2d19dd | 133 | |
c519b272 MV |
134 | SCM |
135 | scm_c_primitive_load (const char *filename) | |
136 | { | |
cc95e00a | 137 | return scm_primitive_load (scm_from_locale_string (filename)); |
c519b272 MV |
138 | } |
139 | ||
0f2d19dd | 140 | \f |
3feedb00 MD |
141 | /* Builtin path to scheme library files. */ |
142 | #ifdef SCM_PKGDATA_DIR | |
a1ec6916 | 143 | SCM_DEFINE (scm_sys_package_data_dir, "%package-data-dir", 0, 0, 0, |
1bbd0b84 | 144 | (), |
b380b885 MD |
145 | "Return the name of the directory where Scheme packages, modules and\n" |
146 | "libraries are kept. On most Unix systems, this will be\n" | |
147 | "@samp{/usr/local/share/guile}.") | |
1bbd0b84 | 148 | #define FUNC_NAME s_scm_sys_package_data_dir |
3feedb00 | 149 | { |
cc95e00a | 150 | return scm_from_locale_string (SCM_PKGDATA_DIR); |
3feedb00 | 151 | } |
1bbd0b84 | 152 | #undef FUNC_NAME |
3feedb00 MD |
153 | #endif /* SCM_PKGDATA_DIR */ |
154 | ||
e8e9b690 | 155 | #ifdef SCM_LIBRARY_DIR |
a1ec6916 | 156 | SCM_DEFINE (scm_sys_library_dir, "%library-dir", 0,0,0, |
e8e9b690 | 157 | (), |
b380b885 MD |
158 | "Return the directory where the Guile Scheme library files are installed.\n" |
159 | "E.g., may return \"/usr/share/guile/1.3.5\".") | |
e8e9b690 GB |
160 | #define FUNC_NAME s_scm_sys_library_dir |
161 | { | |
cc95e00a | 162 | return scm_from_locale_string (SCM_LIBRARY_DIR); |
e8e9b690 GB |
163 | } |
164 | #undef FUNC_NAME | |
165 | #endif /* SCM_LIBRARY_DIR */ | |
166 | ||
167 | #ifdef SCM_SITE_DIR | |
a1ec6916 | 168 | SCM_DEFINE (scm_sys_site_dir, "%site-dir", 0,0,0, |
e8e9b690 | 169 | (), |
b380b885 MD |
170 | "Return the directory where the Guile site files are installed.\n" |
171 | "E.g., may return \"/usr/share/guile/site\".") | |
e8e9b690 GB |
172 | #define FUNC_NAME s_scm_sys_site_dir |
173 | { | |
cc95e00a | 174 | return scm_from_locale_string (SCM_SITE_DIR); |
e8e9b690 GB |
175 | } |
176 | #undef FUNC_NAME | |
177 | #endif /* SCM_SITE_DIR */ | |
178 | ||
179 | ||
180 | ||
3feedb00 | 181 | \f |
06721500 | 182 | /* Initializing the load path, and searching it. */ |
0f2d19dd | 183 | |
26544b96 | 184 | /* List of names of directories we search for files to load. */ |
06721500 JB |
185 | static SCM *scm_loc_load_path; |
186 | ||
26544b96 JB |
187 | /* List of extensions we try adding to the filenames. */ |
188 | static SCM *scm_loc_load_extensions; | |
189 | ||
5b197db8 AW |
190 | /* Like %load-path and %load-extensions, but for compiled files. */ |
191 | static SCM *scm_loc_load_compiled_path; | |
22f4ee48 AW |
192 | static SCM *scm_loc_load_compiled_extensions; |
193 | ||
ee001750 AW |
194 | /* Whether we should try to auto-compile. */ |
195 | static SCM *scm_loc_load_should_autocompile; | |
01cddfc1 | 196 | |
5ea401bf AW |
197 | /* The fallback path for autocompilation */ |
198 | static SCM *scm_loc_compile_fallback_path; | |
01cddfc1 | 199 | |
a1ec6916 | 200 | SCM_DEFINE (scm_parse_path, "parse-path", 1, 1, 0, |
1bbd0b84 | 201 | (SCM path, SCM tail), |
d91788cb MG |
202 | "Parse @var{path}, which is expected to be a colon-separated\n" |
203 | "string, into a list and return the resulting list with\n" | |
204 | "@var{tail} appended. If @var{path} is @code{#f}, @var{tail}\n" | |
205 | "is returned.") | |
1bbd0b84 | 206 | #define FUNC_NAME s_scm_parse_path |
04e8fb0a | 207 | { |
7d04d68b MV |
208 | #ifdef __MINGW32__ |
209 | SCM sep = SCM_MAKE_CHAR (';'); | |
210 | #else | |
211 | SCM sep = SCM_MAKE_CHAR (':'); | |
212 | #endif | |
213 | ||
04e8fb0a MD |
214 | if (SCM_UNBNDP (tail)) |
215 | tail = SCM_EOL; | |
7888309b | 216 | return (scm_is_false (path) |
04e8fb0a | 217 | ? tail |
7d04d68b | 218 | : scm_append_x (scm_list_2 (scm_string_split (path, sep), tail))); |
04e8fb0a | 219 | } |
1bbd0b84 | 220 | #undef FUNC_NAME |
04e8fb0a MD |
221 | |
222 | ||
06721500 | 223 | /* Initialize the global variable %load-path, given the value of the |
3feedb00 | 224 | SCM_SITE_DIR and SCM_LIBRARY_DIR preprocessor symbols and the |
01cddfc1 | 225 | GUILE_LOAD_PATH environment variable. */ |
0f2d19dd | 226 | void |
06721500 JB |
227 | scm_init_load_path () |
228 | { | |
11c5e0bf | 229 | char *env; |
06721500 | 230 | SCM path = SCM_EOL; |
5b197db8 | 231 | SCM cpath = SCM_EOL; |
06721500 | 232 | |
3feedb00 | 233 | #ifdef SCM_LIBRARY_DIR |
02b84691 AW |
234 | env = getenv ("GUILE_SYSTEM_PATH"); |
235 | if (env && strcmp (env, "") == 0) | |
236 | /* special-case interpret system-path=="" as meaning no system path instead | |
237 | of '("") */ | |
238 | ; | |
239 | else if (env) | |
240 | path = scm_parse_path (scm_from_locale_string (env), path); | |
241 | else | |
242 | path = scm_list_3 (scm_from_locale_string (SCM_SITE_DIR), | |
243 | scm_from_locale_string (SCM_LIBRARY_DIR), | |
244 | scm_from_locale_string (SCM_PKGDATA_DIR)); | |
5b197db8 AW |
245 | |
246 | env = getenv ("GUILE_SYSTEM_COMPILED_PATH"); | |
247 | if (env && strcmp (env, "") == 0) | |
248 | /* like above */ | |
249 | ; | |
250 | else if (env) | |
251 | cpath = scm_parse_path (scm_from_locale_string (env), cpath); | |
252 | else | |
3c997c4b AW |
253 | cpath = scm_cons (scm_from_locale_string (SCM_CCACHE_DIR), cpath); |
254 | ||
3feedb00 | 255 | #endif /* SCM_LIBRARY_DIR */ |
06721500 | 256 | |
3c997c4b | 257 | { |
179fe336 AW |
258 | char cachedir[1024]; |
259 | char *e; | |
260 | #ifdef HAVE_GETPWENT | |
261 | struct passwd *pwd; | |
262 | #endif | |
5b197db8 | 263 | |
6e5c02b8 AW |
264 | #define FALLBACK_DIR \ |
265 | "guile/ccache/" SCM_EFFECTIVE_VERSION "-" SCM_OBJCODE_MACHINE_VERSION_STRING | |
179fe336 AW |
266 | |
267 | if ((e = getenv ("XDG_CACHE_HOME"))) | |
48a0fe4d | 268 | snprintf (cachedir, sizeof(cachedir), "%s/" FALLBACK_DIR, e); |
179fe336 AW |
269 | else if ((e = getenv ("HOME"))) |
270 | snprintf (cachedir, sizeof(cachedir), "%s/.cache/" FALLBACK_DIR, e); | |
5b197db8 | 271 | #ifdef HAVE_GETPWENT |
179fe336 AW |
272 | else if ((pwd = getpwuid (getuid ())) && pwd->pw_dir) |
273 | snprintf (cachedir, sizeof(cachedir), "%s/.cache/" FALLBACK_DIR, | |
274 | pwd->pw_dir); | |
5b197db8 | 275 | #endif /* HAVE_GETPWENT */ |
179fe336 AW |
276 | else |
277 | cachedir[0] = 0; | |
278 | ||
279 | if (cachedir[0]) | |
280 | *scm_loc_compile_fallback_path = scm_from_locale_string (cachedir); | |
3c997c4b | 281 | } |
06721500 | 282 | |
11c5e0bf MV |
283 | env = getenv ("GUILE_LOAD_PATH"); |
284 | if (env) | |
285 | path = scm_parse_path (scm_from_locale_string (env), path); | |
01cddfc1 | 286 | |
5b197db8 AW |
287 | env = getenv ("GUILE_LOAD_COMPILED_PATH"); |
288 | if (env) | |
289 | cpath = scm_parse_path (scm_from_locale_string (env), cpath); | |
290 | ||
06721500 | 291 | *scm_loc_load_path = path; |
5b197db8 | 292 | *scm_loc_load_compiled_path = cpath; |
06721500 JB |
293 | } |
294 | ||
04e8fb0a | 295 | SCM scm_listofnullstr; |
06721500 | 296 | |
7d04d68b MV |
297 | /* Utility functions for assembling C strings in a buffer. |
298 | */ | |
299 | ||
300 | struct stringbuf { | |
301 | char *buf, *ptr; | |
302 | size_t buf_len; | |
303 | }; | |
304 | ||
305 | static void | |
306 | stringbuf_free (void *data) | |
307 | { | |
308 | struct stringbuf *buf = (struct stringbuf *)data; | |
309 | free (buf->buf); | |
310 | } | |
311 | ||
312 | static void | |
313 | stringbuf_grow (struct stringbuf *buf) | |
314 | { | |
315 | size_t ptroff = buf->ptr - buf->buf; | |
316 | buf->buf_len *= 2; | |
7d04d68b MV |
317 | buf->buf = scm_realloc (buf->buf, buf->buf_len); |
318 | buf->ptr = buf->buf + ptroff; | |
319 | } | |
320 | ||
321 | static void | |
322 | stringbuf_cat_locale_string (struct stringbuf *buf, SCM str) | |
323 | { | |
324 | size_t max_len = buf->buf_len - (buf->ptr - buf->buf) - 1; | |
325 | size_t len = scm_to_locale_stringbuf (str, buf->ptr, max_len); | |
326 | if (len > max_len) | |
327 | { | |
328 | /* buffer is too small, double its size and try again. | |
329 | */ | |
330 | stringbuf_grow (buf); | |
331 | stringbuf_cat_locale_string (buf, str); | |
332 | } | |
333 | else | |
334 | { | |
335 | /* string fits, terminate it and check for embedded '\0'. | |
336 | */ | |
337 | buf->ptr[len] = '\0'; | |
338 | if (strlen (buf->ptr) != len) | |
339 | scm_misc_error (NULL, | |
340 | "string contains #\\nul character: ~S", | |
341 | scm_list_1 (str)); | |
342 | buf->ptr += len; | |
343 | } | |
344 | } | |
345 | ||
346 | static void | |
347 | stringbuf_cat (struct stringbuf *buf, char *str) | |
348 | { | |
349 | size_t max_len = buf->buf_len - (buf->ptr - buf->buf) - 1; | |
350 | size_t len = strlen (str); | |
351 | if (len > max_len) | |
352 | { | |
353 | /* buffer is too small, double its size and try again. | |
354 | */ | |
355 | stringbuf_grow (buf); | |
356 | stringbuf_cat (buf, str); | |
357 | } | |
358 | else | |
359 | { | |
360 | /* string fits, copy it into buffer. | |
361 | */ | |
362 | strcpy (buf->ptr, str); | |
363 | buf->ptr += len; | |
364 | } | |
365 | } | |
366 | ||
367 | ||
22f4ee48 AW |
368 | static int |
369 | scm_c_string_has_an_ext (char *str, size_t len, SCM extensions) | |
370 | { | |
371 | for (; !scm_is_null (extensions); extensions = SCM_CDR (extensions)) | |
372 | { | |
373 | char *ext; | |
374 | size_t extlen; | |
375 | int match; | |
376 | ext = scm_to_locale_string (SCM_CAR (extensions)); | |
377 | extlen = strlen (ext); | |
378 | match = (len > extlen && str[len - extlen - 1] == '.' | |
379 | && strncmp (str + (len - extlen), ext, extlen) == 0); | |
380 | free (ext); | |
381 | if (match) | |
382 | return 1; | |
383 | } | |
384 | return 0; | |
385 | } | |
386 | ||
04e8fb0a | 387 | /* Search PATH for a directory containing a file named FILENAME. |
06721500 | 388 | The file must be readable, and not a directory. |
26544b96 | 389 | If we find one, return its full filename; otherwise, return #f. |
56384176 JB |
390 | If FILENAME is absolute, return it unchanged. |
391 | If given, EXTENSIONS is a list of strings; for each directory | |
392 | in PATH, we search for FILENAME concatenated with each EXTENSION. */ | |
88cbb421 LC |
393 | SCM_DEFINE (scm_search_path, "search-path", 2, 0, 1, |
394 | (SCM path, SCM filename, SCM rest), | |
d91788cb MG |
395 | "Search @var{path} for a directory containing a file named\n" |
396 | "@var{filename}. The file must be readable, and not a directory.\n" | |
397 | "If we find one, return its full filename; otherwise, return\n" | |
398 | "@code{#f}. If @var{filename} is absolute, return it unchanged.\n" | |
399 | "If given, @var{extensions} is a list of strings; for each\n" | |
400 | "directory in @var{path}, we search for @var{filename}\n" | |
401 | "concatenated with each @var{extension}.") | |
1bbd0b84 | 402 | #define FUNC_NAME s_scm_search_path |
06721500 | 403 | { |
7d04d68b | 404 | struct stringbuf buf; |
56384176 | 405 | char *filename_chars; |
7d04d68b | 406 | size_t filename_len; |
88cbb421 | 407 | SCM extensions, require_exts; |
7d04d68b | 408 | SCM result = SCM_BOOL_F; |
06721500 | 409 | |
88cbb421 LC |
410 | if (scm_is_null (rest)) |
411 | { | |
412 | /* Called either by Scheme code that didn't provide the optional | |
413 | arguments, or C code that used the Guile 1.8 signature (2 required, | |
414 | 1 optional arg) and passed '() as the EXTENSIONS argument. */ | |
415 | extensions = SCM_EOL; | |
416 | require_exts = SCM_UNDEFINED; | |
417 | } | |
418 | else | |
419 | { | |
420 | if (scm_is_null (SCM_CAR (rest)) || scm_is_pair (SCM_CAR (rest))) | |
421 | { | |
422 | /* Called by Scheme code written for 1.9. */ | |
423 | extensions = SCM_CAR (rest); | |
424 | if (scm_is_null (SCM_CDR (rest))) | |
425 | require_exts = SCM_UNDEFINED; | |
426 | else | |
427 | { | |
428 | require_exts = SCM_CADR (rest); | |
429 | if (SCM_UNLIKELY (!scm_is_null (SCM_CDDR (rest)))) | |
430 | scm_wrong_num_args (scm_from_locale_string (FUNC_NAME)); | |
431 | } | |
432 | } | |
433 | else | |
434 | { | |
435 | /* Called by C code that uses the 1.8 signature, i.e., which | |
436 | expects the 3rd argument to be EXTENSIONS. */ | |
437 | extensions = rest; | |
438 | require_exts = SCM_UNDEFINED; | |
439 | } | |
440 | } | |
441 | ||
04e8fb0a | 442 | if (SCM_UNBNDP (extensions)) |
56384176 | 443 | extensions = SCM_EOL; |
56384176 | 444 | |
88cbb421 LC |
445 | SCM_VALIDATE_LIST (3, extensions); |
446 | ||
22f4ee48 AW |
447 | if (SCM_UNBNDP (require_exts)) |
448 | require_exts = SCM_BOOL_F; | |
449 | ||
661ae7ab | 450 | scm_dynwind_begin (0); |
7d04d68b MV |
451 | |
452 | filename_chars = scm_to_locale_string (filename); | |
453 | filename_len = strlen (filename_chars); | |
661ae7ab | 454 | scm_dynwind_free (filename_chars); |
06721500 | 455 | |
26544b96 | 456 | /* If FILENAME is absolute, return it unchanged. */ |
2e945bcc SJ |
457 | #ifdef __MINGW32__ |
458 | if (((filename_len >= 1) && | |
459 | (filename_chars[0] == '/' || filename_chars[0] == '\\')) || | |
460 | ((filename_len >= 3) && filename_chars[1] == ':' && | |
461 | ((filename_chars[0] >= 'a' && filename_chars[0] <= 'z') || | |
462 | (filename_chars[0] >= 'A' && filename_chars[0] <= 'Z')) && | |
463 | (filename_chars[2] == '/' || filename_chars[2] == '\\'))) | |
464 | #else | |
56384176 | 465 | if (filename_len >= 1 && filename_chars[0] == '/') |
2e945bcc | 466 | #endif |
7d04d68b | 467 | { |
22f4ee48 AW |
468 | SCM res = filename; |
469 | if (scm_is_true (require_exts) && | |
470 | !scm_c_string_has_an_ext (filename_chars, filename_len, | |
471 | extensions)) | |
472 | res = SCM_BOOL_F; | |
473 | ||
661ae7ab | 474 | scm_dynwind_end (); |
22f4ee48 | 475 | return res; |
7d04d68b | 476 | } |
26544b96 | 477 | |
56384176 JB |
478 | /* If FILENAME has an extension, don't try to add EXTENSIONS to it. */ |
479 | { | |
480 | char *endp; | |
481 | ||
482 | for (endp = filename_chars + filename_len - 1; | |
483 | endp >= filename_chars; | |
484 | endp--) | |
485 | { | |
486 | if (*endp == '.') | |
487 | { | |
22f4ee48 AW |
488 | if (scm_is_true (require_exts) && |
489 | !scm_c_string_has_an_ext (filename_chars, filename_len, | |
490 | extensions)) | |
491 | { | |
492 | /* This filename has an extension, but not one of the right | |
493 | ones... */ | |
494 | scm_dynwind_end (); | |
495 | return SCM_BOOL_F; | |
496 | } | |
56384176 JB |
497 | /* This filename already has an extension, so cancel the |
498 | list of extensions. */ | |
499 | extensions = SCM_EOL; | |
500 | break; | |
501 | } | |
2e945bcc SJ |
502 | #ifdef __MINGW32__ |
503 | else if (*endp == '/' || *endp == '\\') | |
504 | #else | |
56384176 | 505 | else if (*endp == '/') |
2e945bcc | 506 | #endif |
56384176 JB |
507 | /* This filename has no extension, so keep the current list |
508 | of extensions. */ | |
509 | break; | |
510 | } | |
511 | } | |
512 | ||
7d04d68b MV |
513 | /* This simplifies the loop below a bit. |
514 | */ | |
d2e53ed6 | 515 | if (scm_is_null (extensions)) |
7d04d68b | 516 | extensions = scm_listofnullstr; |
06721500 | 517 | |
7d04d68b MV |
518 | buf.buf_len = 512; |
519 | buf.buf = scm_malloc (buf.buf_len); | |
661ae7ab | 520 | scm_dynwind_unwind_handler (stringbuf_free, &buf, SCM_F_WIND_EXPLICITLY); |
0a74e31d | 521 | |
7d04d68b MV |
522 | /* Try every path element. |
523 | */ | |
d2e53ed6 | 524 | for (; scm_is_pair (path); path = SCM_CDR (path)) |
7d04d68b MV |
525 | { |
526 | SCM dir = SCM_CAR (path); | |
527 | SCM exts; | |
528 | size_t sans_ext_len; | |
529 | ||
530 | buf.ptr = buf.buf; | |
531 | stringbuf_cat_locale_string (&buf, dir); | |
532 | ||
533 | /* Concatenate the path name and the filename. */ | |
534 | ||
2e945bcc | 535 | #ifdef __MINGW32__ |
5a6d139b | 536 | if ((buf.ptr > buf.buf) && (buf.ptr[-1] != '/') && (buf.ptr[-1] != '\\')) |
2e945bcc | 537 | #else |
5a6d139b | 538 | if ((buf.ptr > buf.buf) && (buf.ptr[-1] != '/')) |
2e945bcc | 539 | #endif |
7d04d68b MV |
540 | stringbuf_cat (&buf, "/"); |
541 | ||
542 | stringbuf_cat (&buf, filename_chars); | |
543 | sans_ext_len = buf.ptr - buf.buf; | |
544 | ||
545 | /* Try every extension. */ | |
d2e53ed6 | 546 | for (exts = extensions; scm_is_pair (exts); exts = SCM_CDR (exts)) |
7d04d68b MV |
547 | { |
548 | SCM ext = SCM_CAR (exts); | |
549 | struct stat mode; | |
550 | ||
551 | buf.ptr = buf.buf + sans_ext_len; | |
552 | stringbuf_cat_locale_string (&buf, ext); | |
553 | ||
554 | /* If the file exists at all, we should return it. If the | |
555 | file is inaccessible, then that's an error. */ | |
556 | ||
7d04d68b MV |
557 | if (stat (buf.buf, &mode) == 0 |
558 | && ! (mode.st_mode & S_IFDIR)) | |
559 | { | |
560 | result = scm_from_locale_string (buf.buf); | |
561 | goto end; | |
562 | } | |
563 | } | |
564 | ||
565 | if (!SCM_NULL_OR_NIL_P (exts)) | |
566 | scm_wrong_type_arg_msg (NULL, 0, extensions, "proper list"); | |
567 | } | |
56384176 | 568 | |
7d04d68b MV |
569 | if (!SCM_NULL_OR_NIL_P (path)) |
570 | scm_wrong_type_arg_msg (NULL, 0, path, "proper list"); | |
56384176 | 571 | |
7d04d68b | 572 | end: |
661ae7ab | 573 | scm_dynwind_end (); |
7d04d68b | 574 | return result; |
06721500 | 575 | } |
1bbd0b84 | 576 | #undef FUNC_NAME |
06721500 JB |
577 | |
578 | ||
04e8fb0a MD |
579 | /* Search %load-path for a directory containing a file named FILENAME. |
580 | The file must be readable, and not a directory. | |
581 | If we find one, return its full filename; otherwise, return #f. | |
582 | If FILENAME is absolute, return it unchanged. */ | |
3b3b36dd | 583 | SCM_DEFINE (scm_sys_search_load_path, "%search-load-path", 1, 0, 0, |
67e8151b MG |
584 | (SCM filename), |
585 | "Search @var{%load-path} for the file named @var{filename},\n" | |
586 | "which must be readable by the current user. If @var{filename}\n" | |
587 | "is found in the list of paths to search or is an absolute\n" | |
588 | "pathname, return its full pathname. Otherwise, return\n" | |
589 | "@code{#f}. Filenames may have any of the optional extensions\n" | |
590 | "in the @code{%load-extensions} list; @code{%search-load-path}\n" | |
591 | "will try each extension automatically.") | |
1bbd0b84 | 592 | #define FUNC_NAME s_scm_sys_search_load_path |
04e8fb0a MD |
593 | { |
594 | SCM path = *scm_loc_load_path; | |
595 | SCM exts = *scm_loc_load_extensions; | |
a6d9e5ab | 596 | SCM_VALIDATE_STRING (1, filename); |
1bbd0b84 | 597 | |
2ade72d7 DH |
598 | if (scm_ilength (path) < 0) |
599 | SCM_MISC_ERROR ("%load-path is not a proper list", SCM_EOL); | |
600 | if (scm_ilength (exts) < 0) | |
601 | SCM_MISC_ERROR ("%load-extension list is not a proper list", SCM_EOL); | |
88cbb421 | 602 | return scm_search_path (path, filename, exts); |
04e8fb0a | 603 | } |
1bbd0b84 | 604 | #undef FUNC_NAME |
04e8fb0a MD |
605 | |
606 | ||
1d022387 | 607 | static int |
535fb833 | 608 | compiled_is_fresh (SCM full_filename, SCM compiled_filename) |
1d022387 AW |
609 | { |
610 | char *source, *compiled; | |
611 | struct stat stat_source, stat_compiled; | |
612 | int res; | |
613 | ||
614 | source = scm_to_locale_string (full_filename); | |
615 | compiled = scm_to_locale_string (compiled_filename); | |
616 | ||
617 | if (stat (source, &stat_source) == 0 | |
618 | && stat (compiled, &stat_compiled) == 0 | |
535fb833 | 619 | && stat_source.st_mtime == stat_compiled.st_mtime) |
1d022387 AW |
620 | { |
621 | res = 1; | |
622 | } | |
623 | else | |
624 | { | |
625 | scm_puts (";;; note: source file ", scm_current_error_port ()); | |
626 | scm_puts (source, scm_current_error_port ()); | |
6fd367e7 | 627 | scm_puts ("\n;;; newer than compiled ", scm_current_error_port ()); |
1d022387 AW |
628 | scm_puts (compiled, scm_current_error_port ()); |
629 | scm_puts ("\n", scm_current_error_port ()); | |
630 | res = 0; | |
1d022387 | 631 | } |
3c997c4b | 632 | |
1d022387 AW |
633 | free (source); |
634 | free (compiled); | |
635 | return res; | |
636 | } | |
637 | ||
87c595c7 LC |
638 | SCM_KEYWORD (kw_env, "env"); |
639 | ||
1d022387 | 640 | static SCM |
ee001750 | 641 | do_try_autocompile (void *data) |
1d022387 | 642 | { |
3c997c4b AW |
643 | SCM source = PTR2SCM (data); |
644 | SCM comp_mod, compile_file; | |
ee001750 AW |
645 | |
646 | scm_puts (";;; compiling ", scm_current_error_port ()); | |
3c997c4b | 647 | scm_display (source, scm_current_error_port ()); |
ee001750 AW |
648 | scm_newline (scm_current_error_port ()); |
649 | ||
650 | comp_mod = scm_c_resolve_module ("system base compile"); | |
628132c5 AW |
651 | compile_file = scm_module_variable |
652 | (comp_mod, scm_from_locale_symbol ("compile-file")); | |
ee001750 | 653 | |
3c997c4b AW |
654 | if (scm_is_true (compile_file)) |
655 | { | |
87c595c7 LC |
656 | /* Auto-compile in the context of the current module. */ |
657 | SCM res = scm_call_3 (scm_variable_ref (compile_file), source, | |
658 | kw_env, scm_current_module ()); | |
3c997c4b AW |
659 | scm_puts (";;; compiled ", scm_current_error_port ()); |
660 | scm_display (res, scm_current_error_port ()); | |
661 | scm_newline (scm_current_error_port ()); | |
662 | return res; | |
663 | } | |
664 | else | |
665 | { | |
666 | scm_puts (";;; it seems ", scm_current_error_port ()); | |
667 | scm_display (source, scm_current_error_port ()); | |
668 | scm_puts ("\n;;; is part of the compiler; skipping autocompilation\n", | |
669 | scm_current_error_port ()); | |
670 | return SCM_BOOL_F; | |
671 | } | |
ee001750 AW |
672 | } |
673 | ||
674 | static SCM | |
675 | autocompile_catch_handler (void *data, SCM tag, SCM throw_args) | |
676 | { | |
3c997c4b | 677 | SCM source = PTR2SCM (data); |
ee001750 | 678 | scm_puts (";;; WARNING: compilation of ", scm_current_error_port ()); |
3c997c4b | 679 | scm_display (source, scm_current_error_port ()); |
6fd367e7 | 680 | scm_puts (" failed:\n", scm_current_error_port ()); |
ee001750 AW |
681 | scm_puts (";;; key ", scm_current_error_port ()); |
682 | scm_write (tag, scm_current_error_port ()); | |
683 | scm_puts (", throw args ", scm_current_error_port ()); | |
684 | scm_write (throw_args, scm_current_error_port ()); | |
685 | scm_newline (scm_current_error_port ()); | |
1d022387 AW |
686 | return SCM_BOOL_F; |
687 | } | |
688 | ||
9591a2b0 AW |
689 | SCM_DEFINE (scm_sys_warn_autocompilation_enabled, "%warn-autocompilation-enabled", 0, 0, 0, |
690 | (void), "") | |
15058484 | 691 | #define FUNC_NAME s_scm_sys_warn_autocompilation_enabled |
ee001750 AW |
692 | { |
693 | static int message_shown = 0; | |
ee001750 AW |
694 | |
695 | if (!message_shown) | |
696 | { | |
697 | scm_puts (";;; note: autocompilation is enabled, set GUILE_AUTO_COMPILE=0\n" | |
6fd367e7 | 698 | ";;; or pass the --no-autocompile argument to disable.\n", |
ee001750 AW |
699 | scm_current_error_port ()); |
700 | message_shown = 1; | |
701 | } | |
702 | ||
9591a2b0 AW |
703 | return SCM_UNSPECIFIED; |
704 | } | |
15058484 | 705 | #undef FUNC_NAME |
9591a2b0 | 706 | |
9591a2b0 AW |
707 | static SCM |
708 | scm_try_autocompile (SCM source) | |
709 | { | |
710 | if (scm_is_false (*scm_loc_load_should_autocompile)) | |
711 | return SCM_BOOL_F; | |
712 | ||
713 | scm_sys_warn_autocompilation_enabled (); | |
ee001750 AW |
714 | return scm_c_catch (SCM_BOOL_T, |
715 | do_try_autocompile, | |
3c997c4b | 716 | SCM2PTR (source), |
ee001750 | 717 | autocompile_catch_handler, |
3c997c4b | 718 | SCM2PTR (source), |
ee001750 AW |
719 | NULL, NULL); |
720 | } | |
721 | ||
31ab99de LC |
722 | SCM_DEFINE (scm_primitive_load_path, "primitive-load-path", 0, 0, 1, |
723 | (SCM args), | |
67e8151b MG |
724 | "Search @var{%load-path} for the file named @var{filename} and\n" |
725 | "load it into the top-level environment. If @var{filename} is a\n" | |
726 | "relative pathname and is not found in the list of search paths,\n" | |
0fb81f95 AW |
727 | "an error is signalled, unless the optional argument\n" |
728 | "@var{exception_on_not_found} is @code{#f}, in which case\n" | |
729 | "@code{#f} is returned instead.") | |
1bbd0b84 | 730 | #define FUNC_NAME s_scm_primitive_load_path |
06721500 | 731 | { |
31ab99de | 732 | SCM filename, exception_on_not_found; |
22f4ee48 | 733 | SCM full_filename, compiled_filename; |
628132c5 | 734 | int compiled_is_fallback = 0; |
26544b96 | 735 | |
31ab99de LC |
736 | if (scm_is_string (args)) |
737 | { | |
738 | /* C code written for 1.8 and earlier expects this function to take a | |
739 | single argument (the file name). */ | |
740 | filename = args; | |
741 | exception_on_not_found = SCM_UNDEFINED; | |
742 | } | |
743 | else | |
744 | { | |
745 | /* Starting from 1.9, this function takes 1 required and 1 optional | |
746 | argument. */ | |
747 | long len; | |
748 | ||
749 | SCM_VALIDATE_LIST_COPYLEN (SCM_ARG1, args, len); | |
750 | if (len < 1 || len > 2) | |
751 | scm_error_num_args_subr (FUNC_NAME); | |
752 | ||
753 | filename = SCM_CAR (args); | |
754 | SCM_VALIDATE_STRING (SCM_ARG1, filename); | |
755 | ||
756 | exception_on_not_found = len > 1 ? SCM_CADR (args) : SCM_UNDEFINED; | |
757 | } | |
758 | ||
0fb81f95 AW |
759 | if (SCM_UNBNDP (exception_on_not_found)) |
760 | exception_on_not_found = SCM_BOOL_T; | |
26544b96 | 761 | |
26544b96 | 762 | full_filename = scm_sys_search_load_path (filename); |
88cbb421 LC |
763 | compiled_filename = |
764 | scm_search_path (*scm_loc_load_compiled_path, | |
765 | filename, | |
766 | scm_list_2 (*scm_loc_load_compiled_extensions, | |
767 | SCM_BOOL_T)); | |
768 | ||
5ea401bf AW |
769 | if (scm_is_false (compiled_filename) |
770 | && scm_is_true (full_filename) | |
3c997c4b AW |
771 | && scm_is_true (*scm_loc_compile_fallback_path) |
772 | && scm_is_pair (*scm_loc_load_compiled_extensions) | |
773 | && scm_is_string (scm_car (*scm_loc_load_compiled_extensions))) | |
5ea401bf | 774 | { |
3c997c4b AW |
775 | SCM fallback = scm_string_append |
776 | (scm_list_3 (*scm_loc_compile_fallback_path, | |
777 | full_filename, | |
778 | scm_car (*scm_loc_load_compiled_extensions))); | |
779 | if (scm_is_true (scm_stat (fallback, SCM_BOOL_F))) | |
628132c5 AW |
780 | { |
781 | compiled_filename = fallback; | |
782 | compiled_is_fallback = 1; | |
783 | } | |
5ea401bf AW |
784 | } |
785 | ||
22f4ee48 | 786 | if (scm_is_false (full_filename) && scm_is_false (compiled_filename)) |
0fb81f95 AW |
787 | { |
788 | if (scm_is_true (exception_on_not_found)) | |
789 | SCM_MISC_ERROR ("Unable to find file ~S in load path", | |
790 | scm_list_1 (filename)); | |
791 | else | |
792 | return SCM_BOOL_F; | |
793 | } | |
22f4ee48 | 794 | |
1d022387 AW |
795 | if (scm_is_false (full_filename) |
796 | || (scm_is_true (compiled_filename) | |
535fb833 | 797 | && compiled_is_fresh (full_filename, compiled_filename))) |
22f4ee48 AW |
798 | return scm_load_compiled_with_vm (compiled_filename); |
799 | ||
628132c5 AW |
800 | /* Perhaps there was the installed .go that was stale, but our fallback is |
801 | fresh. Let's try that. Duplicating code, but perhaps that's OK. */ | |
802 | ||
803 | if (!compiled_is_fallback | |
804 | && scm_is_true (*scm_loc_compile_fallback_path) | |
805 | && scm_is_pair (*scm_loc_load_compiled_extensions) | |
806 | && scm_is_string (scm_car (*scm_loc_load_compiled_extensions))) | |
807 | { | |
808 | SCM fallback = scm_string_append | |
809 | (scm_list_3 (*scm_loc_compile_fallback_path, | |
810 | full_filename, | |
811 | scm_car (*scm_loc_load_compiled_extensions))); | |
812 | if (scm_is_true (scm_stat (fallback, SCM_BOOL_F)) | |
535fb833 | 813 | && compiled_is_fresh (full_filename, fallback)) |
628132c5 AW |
814 | { |
815 | scm_puts (";;; found fresh local cache at ", scm_current_error_port ()); | |
816 | scm_display (fallback, scm_current_error_port ()); | |
817 | scm_newline (scm_current_error_port ()); | |
5950cc3f | 818 | return scm_load_compiled_with_vm (fallback); |
628132c5 | 819 | } |
3c997c4b | 820 | } |
628132c5 AW |
821 | |
822 | /* Otherwise, we bottom out here. */ | |
22f4ee48 | 823 | { |
628132c5 | 824 | SCM freshly_compiled = scm_try_autocompile (full_filename); |
22f4ee48 | 825 | |
628132c5 AW |
826 | if (scm_is_true (freshly_compiled)) |
827 | return scm_load_compiled_with_vm (freshly_compiled); | |
22f4ee48 | 828 | else |
628132c5 | 829 | return scm_primitive_load (full_filename); |
22f4ee48 | 830 | } |
06721500 | 831 | } |
1bbd0b84 | 832 | #undef FUNC_NAME |
06721500 | 833 | |
c519b272 MV |
834 | SCM |
835 | scm_c_primitive_load_path (const char *filename) | |
836 | { | |
31ab99de | 837 | return scm_primitive_load_path (scm_from_locale_string (filename)); |
c519b272 MV |
838 | } |
839 | ||
5f161164 AW |
840 | void |
841 | scm_init_eval_in_scheme (void) | |
842 | { | |
843 | SCM eval_scm, eval_go; | |
844 | eval_scm = scm_search_path (*scm_loc_load_path, | |
845 | scm_from_locale_string ("ice-9/eval.scm"), | |
846 | SCM_EOL); | |
847 | eval_go = scm_search_path (*scm_loc_load_compiled_path, | |
848 | scm_from_locale_string ("ice-9/eval.go"), | |
849 | SCM_EOL); | |
850 | ||
851 | if (scm_is_true (eval_scm) && scm_is_true (eval_go) | |
852 | && compiled_is_fresh (eval_scm, eval_go)) | |
853 | scm_load_compiled_with_vm (eval_go); | |
854 | } | |
855 | ||
06721500 | 856 | \f |
e151bee6 | 857 | /* Information about the build environment. */ |
06721500 | 858 | |
d7a22073 LC |
859 | SCM_VARIABLE_INIT (sys_host_type, "%host-type", |
860 | scm_from_locale_string (HOST_TYPE)); | |
861 | ||
862 | ||
e151bee6 JB |
863 | /* Initialize the scheme variable %guile-build-info, based on data |
864 | provided by the Makefile, via libpath.h. */ | |
865 | static void | |
866 | init_build_info () | |
867 | { | |
868 | static struct { char *name; char *value; } info[] = SCM_BUILD_INFO; | |
86d31dfe | 869 | SCM *loc = SCM_VARIABLE_LOC (scm_c_define ("%guile-build-info", SCM_EOL)); |
c014a02e | 870 | unsigned long i; |
e151bee6 JB |
871 | |
872 | for (i = 0; i < (sizeof (info) / sizeof (info[0])); i++) | |
cc95e00a MV |
873 | { |
874 | SCM key = scm_from_locale_symbol (info[i].name); | |
875 | SCM val = scm_from_locale_string (info[i].value); | |
876 | *loc = scm_acons (key, val, *loc); | |
877 | } | |
e151bee6 JB |
878 | } |
879 | ||
e151bee6 | 880 | \f |
0f2d19dd JB |
881 | void |
882 | scm_init_load () | |
0f2d19dd | 883 | { |
1afff620 | 884 | scm_listofnullstr = scm_permanent_object (scm_list_1 (scm_nullstr)); |
86d31dfe | 885 | scm_loc_load_path = SCM_VARIABLE_LOC (scm_c_define ("%load-path", SCM_EOL)); |
26544b96 | 886 | scm_loc_load_extensions |
86d31dfe | 887 | = SCM_VARIABLE_LOC (scm_c_define ("%load-extensions", |
cc95e00a MV |
888 | scm_list_2 (scm_from_locale_string (".scm"), |
889 | scm_nullstr))); | |
5b197db8 AW |
890 | scm_loc_load_compiled_path |
891 | = SCM_VARIABLE_LOC (scm_c_define ("%load-compiled-path", SCM_EOL)); | |
22f4ee48 AW |
892 | scm_loc_load_compiled_extensions |
893 | = SCM_VARIABLE_LOC (scm_c_define ("%load-compiled-extensions", | |
894 | scm_list_1 (scm_from_locale_string (".go")))); | |
86d31dfe | 895 | scm_loc_load_hook = SCM_VARIABLE_LOC (scm_c_define ("%load-hook", SCM_BOOL_F)); |
06721500 | 896 | |
5ea401bf AW |
897 | scm_loc_compile_fallback_path |
898 | = SCM_VARIABLE_LOC (scm_c_define ("%compile-fallback-path", SCM_BOOL_F)); | |
899 | ||
ee001750 AW |
900 | scm_loc_load_should_autocompile |
901 | = SCM_VARIABLE_LOC (scm_c_define ("%load-should-autocompile", SCM_BOOL_F)); | |
902 | ||
ec3a8ace | 903 | the_reader = scm_make_fluid (); |
8b039053 | 904 | scm_fluid_set_x (the_reader, SCM_BOOL_F); |
ec3a8ace NJ |
905 | scm_c_define("current-reader", the_reader); |
906 | ||
e151bee6 JB |
907 | init_build_info (); |
908 | ||
a0599745 | 909 | #include "libguile/load.x" |
0f2d19dd | 910 | } |
89e00824 ML |
911 | |
912 | /* | |
913 | Local Variables: | |
914 | c-file-style: "gnu" | |
915 | End: | |
916 | */ |